AU2019373598B2

AU2019373598B2 - Cleaning device and control method therefor

Info

Publication number: AU2019373598B2
Application number: AU2019373598A
Authority: AU
Inventors: Yong Chen; Kang FAN; Chao SHU; Jian Sun; Chunyong TIAN; Wenquan Wang
Original assignee: Tineco Intelligent Technology Co Ltd
Current assignee: Tineco Intelligent Technology Co Ltd
Priority date: 2018-11-02
Filing date: 2019-09-12
Publication date: 2022-12-08
Anticipated expiration: 2039-09-12
Also published as: US20220047136A1; AU2019373598A1; WO2020088125A1

Abstract

Disclosed are a cleaning device and a control method therefor. The cleaning device comprises: a main body, including a suction unit for generating suction air flows to collect targets of cleaning; an interactive element, arranged on the main body and exposed outside, for generating an indicating signal in response to an interaction event triggered by the user on the basis of an interactive gesture sensed in the interaction event; and a second controller (612), arranged in the main body and connected with the interactive element, for obtaining the indicating signal and sending a corresponding given signal to the suction unit according to the indicating signal, so that the suction unit works according to the given signal. The cleaning device provides users with a simpler and easier control mode; and provides a hardware basis for realizing stepless regulation by adopting the structure consisting of the interactive element and the second controller (612), thereby providing easier access for stepless regulation of the device.

Description

CLEANING DEVICE AND CONTROL METHOD THEREFOR CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure refers to Chinese Patent Application No. 201811302876.6, filed on November 02, 2018 and entitled "Control System for Speed Adjustment of Vacuum Cleaner

and Vacuum Cleaner", which is incorporated herein by reference.

TECHNICAL FIELD

[0002] The present disclosure relates to the field of household appliances, and more particularly relates to a cleaning device and a control method thereof.

BACKGROUND

[0003] Cleaning devices, such as vacuum cleaners, and sweeping, suction and mopping

all-in-one machines, are used in more and more families. The cleaning device may clean up

debris and dust on the ground, desktop or bed, and collect them in a collection apparatus of the

cleaning device.

[0004] Taking the vacuum cleaner as an example, main working parts of which include a

vacuum head, a collection apparatus, and a suction unit. Its working principle is: using a suction

air flow generated by the suction unit to suck dust and other debris into the collection apparatus.

When the vacuum cleaner is in use, a user may select a working mode of the suction unit

according to an actual cleaning need. If the vacuum cleaner is needed to generate a suction air

flow with a large suction force, a high-power mode is selected; and if the vacuum cleaner is

needed to generate a suction air flow with a small suction force, a low-power mode is selected.

[0005] At present, most vacuum cleaners are provided with one or two simple buttons or knobs

for a user to operate. The user presses a button or rotates a knob to switch between several fixed

working modes designed in advance.

SUMMARY

[0006] Various embodiments of the present disclosure provide a cleaning device capable of

solving or improving the problems in the prior art, and a control method thereof.

[0007] In one embodiment of the present disclosure, a cleaning device is provided. The cleaning device includes:

[0008] a main body, including a suction unit that generates a suction air flow, used for collecting an object to be cleaned up through the suction air flow;

[0009] an interaction element, arranged on the main body and exposed outside, and used for generating, in response to an interaction event triggered by a user, an indication signal based on

an interaction gesture sensed in the interaction event; and

[0010] a second controller, arranged in the main body and coupled with the interaction element, and used for acquiring the indication signal and sending, according to the indication signal, a

corresponding given signal to the suction unit such that the suction unit works according to the

given signal.

[0011] In another embodiment of the present disclosure, a control method of a cleaning device

is provided, including:

[0012] generating, in response to an interaction event triggered by a user through an interaction

element, an indication signal based on an interaction gesture sensed in the interaction event,

wherein the interaction element is arranged on the cleaning device and exposed outside; and

[0013] sending, according to the indication signal, a corresponding given signal to a suction

unit of the cleaning device such that the suction unit works according to the given signal.

[0014] According to the technical solutions provided by the embodiments of the present

disclosure, the interaction element capable of sensing the interaction gesture of the user is

arranged on the main body, and the corresponding indication signal is generated based on the

interaction gesture; the second controller controls, according to the indication signal, the suction

unit to work according to the given signal corresponding to the indication signal; a simpler

control mode that is easier to operate is provided to the user using the cleaning device; in

addition, the present embodiment uses the structure with the interaction element and the second

controller to provide a hardware basis for realizing stepless regulation of the device, so that the

stepless regulation of the device is easier to realize.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to describe the technical solutions in the embodiments of the present disclosure or the prior art more clearly, the drawings required to be used for descriptions about the embodiments or the prior art will be simply introduced below. It is apparent that the drawings described below are some embodiments of the present disclosure. Those of ordinary skill in the art may further obtain other drawings according to these drawings without creative work.

[0016] FIG. 1 is a logic block diagram among all systems of a vacuum cleaner of the present disclosure;

[0017] FIG. 2 is a logic block diagram among partial modules inside a vacuum cleaner of the present disclosure;

[0018] FIG. 3 is a logic block diagram of a display apparatus of a vacuum cleaner of the present disclosure;

[0019] FIG. 4 is a schematic diagram when a display apparatus of a vacuum cleaner of the present disclosure displays information;

[0020] FIG. 5 is an enlarged diagram of the part B in FIG. 4;

[0021] FIG. 6 is a schematic diagram of a circuit of a dust detection apparatus according to an embodiment of the present disclosure;

[0022] FIG. 7 is a sectional diagram of a mounting structure of a transmitter and a receiver of the present disclosure;

[0023] FIG. 8 is a schematic diagram of dust detection by a dust detection apparatus of the present disclosure;

[0024] FIG. 9 is a schematic diagram of a scraper bar mechanism of a dust detection apparatus of the present disclosure;

[0025] FIG. 10 is a schematic diagram of a circuit of a transparent window of the present disclosure;

[0026] FIG. 11 is a logic block diagram of an air pressure detection and protection system of a vacuum cleaner of the present disclosure;

[0027] FIG. 12 is a work flow diagram of a controller of the present disclosure;

[0028] FIG. 13 is a logic block diagram of a speed adjustment control system of a vacuum cleaner of the present disclosure;

[0029] FIG. 14 is a schematic structural diagram of a touch sensing member of the present disclosure;

[0030] FIG. 15 is a schematic structural diagram of a touch panel of the present disclosure;

[0031] FIG. 16 is a schematic diagram of a positional relationship between a touch sensing member and a touch panel of the present disclosure;

[0032] FIG. 17 is a front view of a vacuum cleaner of the present disclosure;

[0033] FIG. 18 is a flow diagram of a method for adjusting the power of a dust collection motor of a vacuum cleaner of the present disclosure;

[0034] FIG. 19 is a flow diagram of a method for improving the accuracy of a dust detection sensor of the present disclosure;

[0035] FIG. 20 is a flow diagram of a specific manner for adjusting an electric drive VT with

function fitting;

[0036] FIG. 21 is a flow diagram of determining an electric drive VT of the present disclosure; and

[0037] FIG. 22 is another flow diagram of determining an electric drive VT of the present

disclosure.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0038] In order to enable those skilled in the prior art to better understand the present

application, the technical solution provided by various embodiments of the present application

are illustrated in detail and completely in conjunction with the drawings.

[0039] In some of the processes described in the description, claims, and the above drawings of the present application, a plurality of operations occurring in a particular order are included,

which may be performed out of the order herein or be performed in parallel. The sequence

numbers of the operations, such as Si, S2, etc., are merely used to distinguish between the

various operations, and the sequence numbers themselves do not represent any order of

execution. In addition, the processes may include more or fewer operations, and the operations

may be performed sequentially or in parallel. It should be noted that the expressions herein of

"first", "second", etc. are intended to distinguish between different messages, devices, modules,

etc., and are not intended to represent a sequential order, nor is it intended to limit that "first" and

"second" are of different types.

[0040] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in combination with the drawings in the embodiments of the present disclosure. It is apparent that the described embodiments are not all embodiments but part of embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art on the basis of the embodiments in the present disclosure without creative work shall fall within the scope of protection of the present disclosure.

[0041] Various embodiments of the present disclosure provide a cleaning device. The cleaning device may be, but is not limited to: a vacuum cleaner, a suction, sweeping and mopping

all-in-one machine, and the like. Specifically, the cleaning device includes: a main body, an

interaction element and a second controller. Where,

[0042] the main body includes a suction unit that generates a suction air flow, and is used for collecting an object to be cleaned up through the suction air flow;

[0043] the interaction element is arranged on the main body and exposed outside, and is used

for generating, in response to an interaction event triggered by a user, an indication signal based

on an interaction gesture sensed in the interaction event; and

[0044] the second controller is arranged in the main body and coupled with the interaction element, and is used for acquiring the indication signal and sending, according to the indication

signal, a corresponding given signal to the suction unit such that the suction unit works

according to the given signal.

[0045] The cleaning device in different forms have different main body structures, specifically referring to related content in the prior art, and no more details will be described here. The

cleaning device is described by taking a handheld vacuum cleaner as an example. The main body

may include: an air intake duct, a cyclone separation apparatus, a collection apparatus, a suction

unit, a filter unit, and the like. The air intake duct has an air inlet communicated with an outside

or a ground cleaning accessory (such as a vacuum head); a suction air flow mixed with dust is

guided to the cyclone separation apparatus via the air intake duct; the cyclone separation

apparatus is used for separating the dust from the suction air flow, and the separated dust enters

the collection apparatus. The suction unit may include a motor and a fan, and the motor is used

for driving the fan to rotate to generate the suction air flow. The air flow separated by the

cyclone separation apparatus passes through the filter unit, and is discharged from the main body.

[0046] During specific implementation, the interaction element may be arranged on a surface of a shell of the main body. For example, when a user uses the handheld vacuum cleaner, the interaction element is arranged on the surface, facing the user, of the shell of the main body. During specific implementation, the interaction element may include a touch sensing member (the touch sensing member 410 in the following specific embodiments) and a second converter (the second controller 612 in the following specific embodiments). Further, the interaction element may further include a light emitting display unit (the light emitting display unit 111 in the following specific embodiments) and a driving unit (the driving unit 112 in the following specific embodiments), and provides corresponding output information to the user according to parameter information generated in a working process of the cleaning device, so that the user conveniently learns about the condition of the cleaning device. During specific implementation, the output information may include: at least one of display information and audio information.

[0047] Further, the parameter information may include, but is not limited to, at least one of:

[0048] power or rotation speed information of the suction unit, capacity information of a power supply battery of the cleaning device, communication information of a communication unit of the cleaning device, fault information of the cleaning device, and information related to the object to be cleaned up (such as dust concentration information mentioned in the following specific embodiments).

[0049] The above-mentioned content will be described below in combination with all the accompanying drawings. The cleaning device is still described by taking the handheld vacuum cleaner as an example in the following text, and other types of device are in the similar way.

[0050] Referring to FIG. 1 and FIG. 2, FIG. 1 is a logic block diagram among all systems of the vacuum cleaner of the present disclosure, and FIG. 2 is a logic block diagram among partial modules inside the vacuum cleaner of the present disclosure.

[0051] The present disclosure provides a handheld vacuum cleaner, including a vacuum cleaner display system 100, a dust detection system 200, an air pressure detection and protection system 300, a speed adjustment control system 400, a motor driving system 500, and a control system 600. Among all the above-mentioned systems, the control system 600 has control and information feedback relationships with all the other systems, so that all the other systems may partially overlap and be combined with the control system.

[0052] The vacuum cleaner display system 100 includes: a display control-related part in a controller in the control system 600, and a vacuum cleaner display apparatus 110; the vacuum cleaner display apparatus 110 includes a light emitting display unit 111, a driving unit 112, a battery capacity display portion 113, a power display portion 114, and a display screen 115.

[0053] The dust detection system 200 includes: a dust detection control-related part in the controller in the control system 600, and a dust detection apparatus 210; the dust detection

apparatus 210 includes a sensor 211, a transparent window 212, a sensor circuit 213, a motor

module 214, a scraper bar 215 and a scraper bar baffle plate 216.

[0054] The control system 600 includes a controller 610 and a converter 620. The controller 610 may be implemented by using an MCU (micro control unit) control chip and related

peripheral circuits. A printed circuit board where the MCU control chip is located may be called

a main control board, and is often shown as a symbol of a control chip in the drawings

sometimes. In the illustration of the present embodiment, the controller 610 is used to refer to all

the above several slightly different concepts since this does not affect the illustration.

[0055] The air pressure detection and protection system 300 includes: an air pressure detection

module 310, a comparator 320, a first controller 611 in the controller 610 for controlling an air

pressure, and a first converter 621 in the converter 620 for controlling the air pressure.

[0056] The speed adjustment control system 400 includes: a touch sensing member 410, a power control device 420, a touch panel 430, and a second controller 612 in the controller 610

for controlling the power, and a second converter 622 in the converter for controlling the power.

[0057] The motor driving system 500 includes: a power switch key 510, a battery pack 520, a dust collection motor 530 and a vacuum head motor 540.

[0058] A trigger circuit is arranged on the controller 610. After the user switches on the power

switch key, the trigger circuit initiates a battery signal, and the battery pack 520 is activated.

[0059] The controller 610 and the vacuum cleaner display apparatus 110, the battery pack 520,

the dust collection motor 530, the vacuum head motor 540 as well as the power control device

420 are all provided with a data interface, and communicate through the data interface.

[0060] The battery pack 520 supplies power to the dust collection motor 530, the vacuum head

motor 540 and the power control device 420. The battery pack 520 and the controller 610 have

an interface protocol. The interface protocol uses an open protocol, as long as it meets

communication with the controller 610. The inside of the battery pack 520 may be freely designed. The battery pack 520 may adopt battery packs of different manufacturers or battery packs of different types, and the shape of the battery pack is changed according to vacuum cleaners in different shapes. After obtaining the capacity information of the battery pack, the controller 610 correspondingly processes the battery capacity information, and transmits the information to the vacuum cleaner display apparatus 110 for displaying by means of the battery capacity display portion 113 of the vacuum cleaner display apparatus 110.

[0061] The power control device 420 is coupled with the controller 610 (further, the second controller 612 in the controller 610) through the data interface. After obtaining power information of the vacuum cleaner, the controller 610 transmits the motor power information of the dust collection motor 530 to the vacuum cleaner display apparatus 110 for displaying by means of the power display portion 114 of the vacuum cleaner display apparatus 110. The interface protocol also uses an open protocol, as long as it meets communication with the controller 610. Unless otherwise stated, the interface protocols presented below have the same meaning.

[0062] The vacuum cleaner display system 100 of the present disclosure is described below. As mentioned above, the vacuum cleaner display system 100 includes the display control-related part in the controller of the vacuum cleaner, and the display apparatus 110. The display apparatus 110 is mainly described below.

[0063] Referring to FIG. 3, FIG. 4, and FIG. 5, FIG. 3 is a logic block diagram of the display apparatus of the vacuum cleaner of the present disclosure; FIG. 4 is a schematic diagram when the display apparatus of the vacuum cleaner displays information; and FIG. 5 is an enlarged diagram of the position B in FIG. 4.

[0064] The vacuum cleaner display apparatus provided by the present disclosure is applied to the vacuum cleaner to display the parameter information of the vacuum cleaner in working. The parameter information of the vacuum cleaner may be one or more of power information, battery capacity information, communication information, fault information or dust concentration information. The vacuum cleaner display apparatus is generally arranged on a surface that is easy to observe in a working state of the vacuum cleaner, such as an upward surface, so that the user may acquire changes of the parameter information at any time when using the vacuum cleaner, so as to make an effective determination on a usage state of the vacuum cleaner. The appearance of the vacuum cleaner display apparatus may be set into a corresponding shape, such as a circle, a rectangle or a heart shape, according to different shapes of vacuum cleaners, and no limitations are made here.

[0065] The display apparatus includes a light emitting display unit and a driving unit. It may be obtained based on the above-mentioned content that the interaction element included in the cleaning device may include the display apparatus mentioned in this part. In the present embodiment, the vacuum cleaner display apparatus 110 at least includes: a light emitting display unit 111 and a driving unit 112, and may further include a display screen 115. A battery capacity display portion 113, a power display portion 114, a communication display portion (not shown) and a fault display portion (not shown) may be arranged on the display screen 115. The light emitting display unit 111 may be disposed independently, or may be integrated with the display screen 115. In some preferred embodiments, the light emitting display unit 111 and the display screen 115 form an integrated display apparatus. The display apparatus may use any display apparatus such as a light emitting diode (LED) lamp, a liquid crystal display (LCD), an organic LED (OLED) and a display with a touch function. Of course, according to specific requirements of vacuum cleaners of different types, according to parameter information that needs to be displayed, one or more of the light emitting display unit 111, the battery capacity display portion 113, the communication display portion (not shown), and the fault display portion (not shown) or the power display portion 114 may be selected, and other assemblies are omitted.

[0066] In the present embodiment, the communication display portion is used to display a communication state of the display apparatus, and different communication states are displayed in different patterns. This communication may be a wired communication manner or a wireless communication manner. Specifically, it may be a communication between the display apparatus and the vacuum cleaner, or a communication between the display apparatus and an intelligent terminal. The fault display portion is used to display the fault information of the vacuum cleaner. Such fault information may be any kind of fault information that appears during the operation of the vacuum cleaner, including fault information such as locked rotation of a rolling brush, blockage of a dust collection pipeline, and failure of a dust sensor, and different fault information may be displayed in different characters and/or patterns.

[0067] The light emitting display unit 111 is used to display the dust concentration information of the vacuum cleaner; the driving unit 112 is used to receive a first display instruction that is from the controller 610 and corresponds to a measured value of a set measurement parameter, and provide a driving signal to the light emitting display unit 111 such that the light emitting display unit 111 shows different light emitting states according to a specific numerical value of the first display instruction to display the dust concentration information.

[0068] The battery capacity display portion 113 is used to display the battery capacity information of the vacuum cleaner in the current state; and the power display portion 114 is used

to display the power information of the current dust collection motor 530 of the vacuum cleaner.

The display screen 115 and the controller 610 have an interface protocol. After the interface

protocol is defined, all display screens of different types, different manufacturers or different

shapes may be applied to the vacuum cleaner display apparatus 110 in the embodiment of the

present disclosure.

[0069] The light emitting display unit 111 is composed of a plurality of light emitting devices

arranged in a set order, and is arranged on a surface of the vacuum cleaner. Since it displays

content conspicuously, the light emitting display unit 111 is generally used to display the dust

concentration information that is the most concerned. Of course, it may also be used to display

other information.

[0070] The plurality of light emitting devices may be arranged according to a set pattern. The

set pattern may include, but is not limited to: at least one of a geometric pattern and a character

pattern. For example:

[0071] the plurality of light emitting devices are arranged in a circular pattern, and the plurality

of light emitting devices arranged in the circular pattern are in two colors, which are alternately

arranged; or

[0072] the plurality of light emitting devices are arranged in at least two turns of circular

patterns with a continuously increasing diameter from inside to outside, and the colors of the

light emitting devices arranged in two adjacent turns of circular patterns are different.

[0073] The light emitting devices may be a plurality of LED (short for light emitting diode)

lamps, and the arrangement of the light emitting devices in the set order means that the light

emitting devices are arranged in a certain shape and order. Specifically, they may be in one of a

geometric shape distribution, a character arrangement or a pattern. An arrangement manner of a typical geometric shape distribution is that a plurality of LEDs are arranged according to a circular ring shape.

[0074] The embodiment of the present disclosure is illustrated by taking the LED lamps serving as the light emitting devices and a circular-ring-shaped arrangement serving as the set order of

the light emitting devices as an example. The LED lamps may be in two colors, which are

disposed alternately or side by side. For example, the LED lamps are in two colors: red and blue.

In the present embodiment, the LED lamps are used to display the dust concentration

information of the vacuum cleaner. At any moment when the vacuum cleaner works, each LED

lamp displays one color, and all the LED lamps correspond to a dust state detection result. As the

working time of the vacuum cleaner increases, the amount of dust changes, and the light emitting

display unit 111 displays a dust concentration change to remind the user of performing

corresponding operations in different states according to a display effect when the user uses the

vacuum cleaner.

[0075] The light emitting devices may emit light when the driving unit 112 provides an electric

drive (current or voltage). The light emitting display unit 111 provides corresponding display

information to the outside by means of one or more factors of the number of light emitting

devices that emit light, a light emitting position and a light emitting manner. In the present

embodiment, the light emitting display unit provides the dust concentration information.

[0076] The driving unit 112 receives the first display instruction that is provided by the controller 610 and corresponds to the measured value of the set measurement parameter, and

generates, according to the specific numerical value of the first display instruction, a

corresponding electric drive signal, i.e., a proper current or voltage, to drive the corresponding

light emitting devices of the light emitting display unit 111 to emit light as required. That is, the

controller 610 generates, according to a dust concentration detection value provided by the dust

detection system 200, a corresponding first display instruction, and the driving unit 112

generates, according to a numerical value of the first display instruction, a proper current or

voltage to drive a proper number of light emitting devices in proper colors and at proper

positions to emit light, thus providing detection information of the dust concentration to the user.

In the present embodiment, the light emitting display unit 111 including light emitting devices in

two colors is taken as an example. If more light emitting devices in a first color are turned on, it is indicated that the dust concentration is lower; and more light emitting devices in a second color are turned on, it is indicated that the dust concentration is higher.

[0077] It is set below that the light emitting devices of the light emitting display unit are the LED lamps arranged in the circular ring shape, which are in two colors, such as red and green,

and the LED lamps in the two colors are disposed alternately or side by side. In the case that the

light emitting display unit of the foregoing form is used, a specific display manner of this light

emitting display unit for displaying the dust concentration is illustrated below, referring to FIG. 4

at the same time.

[0078] When the dust concentration is less than or equal to a lowest threshold, the light emitting devices in the first color are all turned on, and the light emitting devices in the second

color are all turned off, referring to the situation shown by Al. The lowest threshold is a

threshold set for the vacuum cleaner according to a condition of a working environment of the

vacuum cleaner. This numerical value reflects that the dust concentration is extremely low. If the

dust concentration is less than this threshold, the vacuum cleaner works in an extremely clean

state, and the dust collection motor may operate in the lowest power or rotation speed.

[0079] When the dust concentration is greater than or equal to a highest threshold, the light emitting devices in the first color are all turned off, and the light emitting devices in the second

color are all turned on, referring to the situation shown by A2. The highest threshold is a

threshold set for the vacuum cleaner according to the condition of the working environment of

the vacuum cleaner. This numerical value reflects that the dust concentration is extremely high.

If the dust concentration is greater than this threshold, the vacuum cleaner works in an extremely

dusty state, and the dust collection motor may operate in the highest power or rotation speed. At

this time, the light emitting devices in the second color are all turned on to prompt the user to

take measures.

[0080] When the dust concentration is between the lowest threshold and the highest threshold,

the light emitting devices are turned on in the following way: starting from a set start point of a

circular ring, the light emitting devices in the second color in a corresponding radian are turned

on according to a ratio based on the specific numerical value, and the light emitting devices in

the first color in the remaining radian range are turned on, referring to the situation shown by A3.

[0081] In another optional implementation mode, the LED lamps serving as the light emitting devices display the dust concentration in a single-color lamp manner, specifically as follows:

[0082] when the dust concentration is less than or equal to the lowest threshold, the light emitting devices in the first color are all turned off, referring to the situation shown by Al;

[0083] when the dust concentration is between the lowest threshold and the highest threshold, partial light emitting devices in the first color are turned on according to the specific numerical value of the first display instruction to display the dust concentration in an arc-like light strip manner, referring to the situation shown by A3; and the radian range of the arc-like light strip indicates the size of the dust concentration; and

[0084] when the dust concentration is greater than or equal to the highest threshold, the light emitting devices in the first color are all turned on to display the dust concentration in a ring-like light strip manner, referring to the situation shown by A2.

[0085] In still another optional implementation mode, the LED lamps display the dust concentration in a two-color lamp manner, specifically as follows:

[0086] when the dust concentration is less than or equal to the lowest threshold, the light emitting devices in the first color are all turned on, and the light emitting devices in the second color are all turned off, referring to the situation shown by Al;

[0087] when the dust concentration is greater than or equal to the highest threshold, the light emitting devices in the first color are all turned off, and the light emitting devices in the second color are all turned on, referring to the situation shown by A2; and

[0088] when the dust concentration is between the lowest threshold and the highest threshold, the light emitting devices are turned on in the following way: starting from a set start point of a circular ring, the light emitting devices in the second color in a corresponding radian are turned on according to a ratio based on the specific numerical value, and the light emitting devices in the first color in the remaining radian range are turned on; furthermore, a certain number of light emitting devices in the first and second colors that are crossed perform overlapping display to achieve a color gradient effect, referring to the situation shown by A4.

[0089] In yet another optional implementation mode, the LED lamps display the dust concentration in a two-color lamp manner, specifically as follows:

[0090] when the dust concentration is less than or equal to the set threshold, the light emitting devices in the first color are all turned on or are displayed in a breathing state (i.e., flickering displaying), and the light emitting devices in the second color are all turned off; and

[0091] when the dust concentration is greater than or equal to the set threshold, the light emitting devices in the second color are all turned on or are displayed in a breathing state (i.e.,

flickering displaying), and the light emitting devices in the first color are all turned off.

[0092] A working condition of the vacuum cleaner display apparatus of the embodiment of the present disclosure is that the user presses the power switch key to initiate the trigger circuit to

send out a battery start signal; the vacuum head motor works according to a preset gear; the

driving unit 112 provides the current or voltage to drive the light emitting display unit 111 to

emit light; and a light emitting state of the light emitting display unit 111 when the power supply

is initiated correspondingly displays the current dust concentration. As the concentration of dust

sucked in changes, the controller receives changed dust concentration information and performs

corresponding processing, so that the driving unit 112 receives the first display instruction to

perform, according to any one of the above-mentioned light emitting manners, corresponding

light emission; and the light emitting state of the light emitting display unit 111 at this moment

correspondingly displays the changed dust concentration.

[0093] The vacuum cleaner display apparatus 110 provided by the embodiment of the present disclosure uses the light emitting devices arranged according to the set order, and the controller

provides the first display instruction corresponding to the set measurement parameter, so that the

driving unit drives the light emitting devices to emit light as required, achieving the effect of

displaying the actually measured parameter information of the vacuum cleaner according to the

light emitting states of the light emitting devices. Due to the control of the first display

instruction, the number of the display states of the light emitting devices is increased, thus

enlarging the display range of the parameter information of the vacuum cleaner. When applied to

displaying of the dust concentration, the vacuum cleaner display apparatus may display different

dust concentrations to remind the user to perform, according to the current dust concentration

information, subsequent operation control on the vacuum cleaner.

[0094] In addition to the light emitting display unit 111, the display apparatus 110 may further

include the display screen 115. In the present embodiment, the display screen 115 is arranged at a

center position of the LED lamps arranged in the circular ring shape. Related display items may

be set on the display screen 115 according to a requirement. In the present embodiment, the battery capacity display portion 113, the power display portion 115, the communication display portion (not shown) and the fault display portion (not shown) are arranged on the display screen

115. In the prior art, the display screen 115 may be implemented in various ways, such as an

LCD display screen, an OLED display screen or other display screens with touch functions.

[0095] The battery capacity display portion 113 displays a digit that represents a remaining battery capacity according to a remaining battery capacity numerical value provided by a battery

power management element of the vacuum cleaner. Specifically, in a discharge or charge process

of a wireless vacuum cleaner, the battery pack 520 communicates with the controller 610 in real

time; after obtaining battery capacity data transmitted by the battery pack 520, the controller 610

communicates with the display screen 115, and provides display driving information

corresponding to the battery capacity to the display screen 115, and finally the display screen 115

performs corresponding displaying according to the display driving information to display the

remaining capacity of the battery pack 520 in real time; and the capacity is displayed in the form

of percentage, and a display range is 0 to 100.

[0096] Optionally, the battery capacity display portion 113 includes a battery icon 113-1. When the capacity is greater than a specific numerical value, the battery icon 113-1 turns into a specific

color (such as green), which indicates full battery. When the capacity is less than a specific

numerical value, the battery icon 113-1 turns into another specific color (such as red), which

indicates low battery, reminding the user to charge the vacuum cleaner.

[0097] Referring to FIG. 5, the power display portion 114 that is arranged on the display screen

115 and displays the power is illustrated. The power display portion 114 performs corresponding

displaying according to the working power of the vacuum cleaner motor. The power display

portion 114 uses equally spaced vertical lines or dots located between a set start point position

and a set end point position to identify the size of the working power of the vacuum cleaner

motor; at the maximum power, the vertical lines or dots located between the start point position

and the end point position are all displayed; and at other power, corresponding number of

vertical lines or dots are displayed from the start point position to the end point position

according to the size of the power.

[0098] Specifically, a low-power icon is placed on the left side of the display screen 115; a

high-power icon is placed on the right side; and a power bar is placed in the middle. Any icon may be placed to represent the low- and high-power icons, as long as it represents the size of the power. The power bar in the middle may use any line, point, pattern or others.

[0099] Several possible methods for displaying are as follows:

[0100] ( In case of lowest power, the low-power icon is displayed, and others are not displayed.

[0101] @ In case of lowest power, the low-power icon and one or more power bars are displayed, and others are not displayed.

[0102] When the power is increased, the display length of the power bar icon is synchronously increased with the machine power, and others are not displayed.

[0103] When the power is increased, the displayed power bar would correspond to the current machine power, and others are not displayed.

[0104] © In case of highest power, the power bar is completely displayed, the high-power icon is displayed, and others are not displayed.

[0105] © In case of highest power, the high-power icon is displayed, and others are not displayed.

[0106] Corresponding to the solution that the light emitting display unit 111 is formed by the LEDs arranged in the circular ring shape and the display screen 115 is arranged in the center of the display apparatus 110, a circular light-transmitting cover plate in a corresponding size is arranged according to a regional size of the LED lamps arranged in the circular ring shape, so as to protect the display apparatus 110.

[0107] In another embodiment of the present disclosure, the display apparatus 110 includes a driving unit 112 and a display screen 115. The display screen 115 is an integrated display. This display simultaneously displays one or more of power information, battery capacity information, communication information, fault information or dust concentration information; and the driving unit 112 is used to drive the display to display the corresponding information. In this implementation mode, the display screen 115 is a liquid crystal display or an OLED display. The driving unit 112 outputs, in response to a signal of the control system of the vacuum cleaner, a corresponding signal to the display screen 115, and the display screen 115 displays one or more of the power information, the battery capacity information, the communication information, the fault information and the dust concentration information. In combination with the vacuum cleaner, the display apparatus 110 may be arranged at the top ends of a dust barrel and the cyclone separator of the vacuum cleaner, and its driving unit 112 is in wired communication connection with the control system of the vacuum cleaner. A circular display screen is used. Such display apparatus is better in display effect, and enhances the user experience of the vacuum cleaner.

[0108] The vacuum cleaner display apparatus provided by the present embodiment has the following beneficial effects:

[0109] the light emitting devices arranged according to the set order are used, and the controller provides the first display instruction corresponding to the set measurement parameter, so that the

information, subsequent operation control on the vacuum cleaner.

[0110] The dust detection system 200 of the present disclosure is described below. As

mentioned above, the dust detection system 200 includes the dust detection control-related part

in the controller in the control system 600, and the dust detection apparatus 210.

[0111] In the present embodiment, the vacuum cleaner includes the dust detection apparatus

210, a main control board, a dust barrel, an air pipeline and an adapter pipe communicating the

dust barrel with the air pipeline. The dust detection apparatus includes the sensor 211, the

transparent window 212 and the sensor circuit 213. The sensor includes: a transmitter 211-1 and

a receiver 211-2. The transmitter 211-1 and the receiver 211-2 are symmetrically arranged in the

adapter pipe; a light path passing through the adapter pipe is formed between the transmitter

211-1 and the receiver 211-2; the transparent window 212 is arranged at a pipe wall portion of

the adapter pipe passed through by the light path; the sensor 211 transmits the obtained detection

signal to the main control board by means of the sensor circuit 213; and the main control board

calculates a dust condition according to the detection signal.

[0112] Referring to FIG. 6, FIG. 7 and FIG. 8, FIG. 6 is a schematic diagram of a circuit of a dust detection apparatus according to an embodiment of the present disclosure; FIG. 7 is a schematic diagram of a mounting structure of a transmitter and a receiver of the present embodiment; and FIG. 8 is a schematic diagram of dust detection by a dust detection apparatus detects dust.

[0113] Referring to FIG. 2, FIG. 6 and FIG. 7, the dust detection apparatus 210 includes a sensor 211, transparent windows 212 and a sensor circuit 213.

[0114] As shown in FIG. 7, the sensor 211 is arranged in the adapter pipe communicating the air pipeline with the dust barrel; two transparent windows 212 are respectively embedded on the pipe wall of the adapter pipe; the adapter pipe is semicircular; one transparent window 212 is fastened on a vertical pipe wall of the semicircular adapter pipe, and the other transparent window 212 is arranged on an arc-shaped pipe wall of the adapter pipe; partial arc-shaped pipe wall protrudes outwards to form an opening; the transparent window 212 extend into the opening for fixing; the sensor 211 is close to a position of a dust suction port and used to detect the amount of dust; the sensor 211 includes a transmitter 211-1 and a receiver 211-2; the transmitter 211-1 and the receiver 211-2 are symmetrically arranged on a channel where the dust flows; a light path passing through the adapter pipe is formed between the transmitter 211-1 and the receiver 211-2; the transparent windows 212 are arranged at pipe wall portions of the adapter pipe passed through by the light path; the transparent windows 212 are made of a transparent substance to allow light transmitted by the transmitter 211-1 to effectively pass through and be received by the receiver 211-2.

[0115] The adapter pipe maybe set to have a pipe wall portion extending into the dust barrel or the air pipeline, and correspondingly, the sensor 211 may be arranged on a pipe wall, corresponding to the pipe wall portion, of the dust barrel or the air pipeline.

[0116] The transmitter 211-1 and the receiver 211-2 are coupled with the controller 610 through the sensor circuit 213, and the main control board (hereinafter referred to as a main control board) included in the controller 610 is provided with a reference signal input end, a transmitter control end and a detection signal input end respectively; the transmitter 211-1 is in signal connection with the transmitter control end; the receiver 211-2 is coupled with the reference signal input end; and the receiver 211-2 is also in signal connection with the detection signal input end of the main control board through the sensor circuit 213.

[0117] During detection of the amount of dust, the receiver 211-2 receives a light signal transmitted by the transmitter 211-1, and outputs a detection signal corresponding to a light income. The detection signal of the receiver 211-2 is converted into a pulse or a square wave after passing through the sensor circuit 213, and is input into the main control board from the detection signal input end. The amount of dust may be acquired according to the number of pulses or square waves detected by the main control board, i.e., if the number of pulses is larger, the amount of dust is larger; and if the number of pulses is smaller, the amount of dust is smaller. In addition, if a particle size of dust is larger, the pulses are wider; and if the particle size of dust is smaller, the pulses are narrower.

[0118] An electric signal preset value is preset in the main control board. The electric signal preset value is a reference voltage value, and may also be represented by current, light intensity and pulse. The setting of the reference voltage value is related to the sensitivity of the sensor 211. A specific determination manner is to obtain the reference voltage value by means of detecting the detection signal of the receiver 211-2 under a calibration environment. The calibration environment is a cleaner normal environment where the vacuum cleaner does not work.

[0119] The adjustment of the sensitivity of the dust detection apparatus is described below.

[0120] Referring to FIG. 8, in a normal case, during dust collection, when there is dust flowing through a dust channel, part of the light transmitted by the transmitter 211-1 is shielded by the dust, so that the light income of the receiver 211-2 will be reduced. The detection signal of the receiver 211-2 is input into the main control board through the reference signal input end, and the main control board receives a normal electric signal value.

[0121] In the dust detection process, if dust is attached to a surface of the transmitter 211-1, part of the light emitted by the transmitter 211-1 is shielded by the dust attached to the surface of the transmitter 211-1 before the light reaches the surface of the dust in the dust channel. As a result, the light income of the receiver 211-2 is reduced compared to the light income in the normal case.

[0122] A manner for adjusting the sensitivity of the sensor is: a preset value is set in the main control board; and the main control board compares the electric signal value received by the reference signal input end with the preset value in the main control board, and adjusts, according to their comparison result, power supplied to a control end of the transmitter 211-1 to adjust the light emitting intensity of the transmitter 211-1 till a difference value between the electric signal value obtained by the reference signal input end and the preset value is within a predetermined threshold range. There are a variety of specific adjustment methods. The present embodiment provides a specific implementation solution, referring to details in the following sections.

[0123] The threshold range is set reasonably according to the particle sizes of dust and the amounts of dust corresponding to different cases under the working environment of the vacuum

cleaner. Adjusting the light emitting intensity of the transmitter 211-1 is specifically to increase

or decrease the light emitting intensity by adjusting a drive voltage of the transmitter 211-1.

[0124] Optionally, the setting of the preset value may be adjusted according to a requirement of an environment before a dust collection operation. In addition, the preset value may also be

calibrated in real time in the dust collection operation process. This is described below:

[0125] the main control board calibrates the preset value according to the detection signal

obtained by the detection signal input end and the dust particle value or the dust concentration

value to enable the preset value to be close to or the same as an analog signal value.

[0126] Optionally, the main control board obtains the dust concentration value in the following way: calculating the dust concentration value according to the number of square waves in the

detection signal within unit time.

[0127] Optionally, the main control board calculates the particle size of dust by counting the widths of the square waves appearing in the detection signal.

[0128] Optionally, referring to FIG. 6, the dust detection apparatus 210 further includes: a

motor module 214; the motor module 214 is coupled with a motor control output port of the

controller 610, and adjusts the power or the rotation speed of the dust collection motor according

to a given value provided by the motor control output port; and after calculating the dust

condition according to the detection signal, the main control board substitutes the obtained dust

condition into a set value calculation method set therein to obtain the set value provided by the

dust collection motor control output port.

[0129] The above dust detection apparatus includes the transparent windows 212 which provide

a passing path between the transmitter 211-1 and the receiver 211-2 of the sensor 211 to realize

measurement of the dust concentration at the position of the adapter pipe. However, the vacuum cleaner works in a dusty environment, so that in the use process of the vacuum cleaner, the transparent windows 212 are stained with dust soon, and the transparency is lowered; and therefore, the dust detection apparatus may not realize accurate measurement of the dust condition. In order to solve the above-mentioned problem, in this implementation, a special scraper bar is mounted on the transparent window 212 and used for cleaning the transparent window 212.

[0130] Referring to FIG. 9, a schematic diagram of a scraper bar mechanism of the dust

detection apparatus of the present disclosure is illustrated.

[0131] The scraper bar mechanism includes a scraper bar 215 and scraper bar baffle plates 216. The scraper bar baffle plates 216 are fixed at two ends of the transparent window 212; the

scraper bar 215 is arranged between the scraper bar baffle plates 216, and may move between the

scraper bar baffle plates 216 in a manner of being fitted to a surface of the transparent window

212. The surface for fitting is a side of the transparent window 212 which is easy to pollute, or

both sides of the transparent window 212 are provided with scraper bars 215.

[0132] Correspondingly, in order to drive the scraper bar 215, the scraper bar mechanism further includes a scraper bar motor (not shown), and a scraper bar motor control unit (not

shown); the rotation of the scraper bar motor drives the scraper bar to move through a

mechanical mechanism; and the scraper bar motor control unit is used for controlling the rotation

of the scraper bar motor.

[0133] The rotation of the scraper bar motor includes clockwise rotation and anticlockwise

rotation; and the clockwise rotation and the anticlockwise rotation may be converted into

motions of the scraper bar 215 towards a left direction and a right direction through the

mechanical mechanism. The scraper bar motor and its mechanical structure may be realized in

various manners. For example, the scraper bar motor may use a commonly used small-size direct

current motor, and the mechanical mechanism may use a small-size screw rod; one end of the

scraper bar 215 is provided with an internal thread hole which is in sleeving fit with the screw

rod; as the screw rod is driven by the scraper bar motor to rotate and moves along its axis, a

motion of the scraper bar 215 fitted to the surface of the transparent window 212 is realized; and

when the scraper bar motor changes the rotation direction, the scraper bar 215 may move in an

opposite direction. Of course, there are many possible technical solutions to realize that the scraper bar motor drives the scraper bar 215 to move, and no more details are described here.

[0134] Optionally, the scraper bar motor control unit includes a circuit for supplying power to the scraper bar motor, and a control program on the main control board for controlling the circuit;

the scraper bar motor needs to be constantly switched between clockwise rotation and

anticlockwise rotation according to circumstances, so that the circuit for supplying power to the

scraper bar motor may adopt an H bridge circuit that easily changes a power supply direction of

a direct current motor, specifically as shown in FIG. 10. The controller 610 controls start and stop

as well as the clockwise rotation and anticlockwise rotation of the scraper bar motor by

controlling the conduction and a conduction direction of the H bridge circuit.

[0135] Referring to FIG. 10, a schematic diagram of a control circuit of a scraper bar

mechanism of a transparent window of the present disclosure is illustrated. The circuit principle

for wiping the transparent window is described below.

[0136] A control circuit main body of the scraper bar mechanism is an H bridge circuit, and this

circuit is composed of four thyristors Q1, Q2, Q3 and Q4 or high-power triodes.

[0137] When QI and Q4 are controlled to be opened, and Q2 and Q3 are controlled to be closed, the scraper bar motor rotates clockwise; and when the QI and Q4 are controlled to be

closed, and Q2 and Q3 are controlled to be opened, the scraper bar motor rotates anticlockwise.

Control for Q Ito Q4 is realized by a control voltage output by an output port of a control end of

the main control board, and how the output port outputs the control voltage is realized through an

internal control program.

[0138] One scraper bar baffle plate 216 is mounted on each of two sides of the transparent

window 212 to realize limitation. When the scraper bar motor controlled by the motor to rotate

clockwise, the scraper bar 215 moves towards one direction, for example, from left to right.

Since a bottom surface of the scraper bar 215 is fitted to the transparent window 212, the scraper

bar 215 starts to clean dirt on the surface of the transparent window 212. The scraper bar 215 is

stopped when colliding with the scraper bar baffle plate 216, and the rotation of the scraper bar

motor is blocked, leading to outstanding increase in current flowing through a resistor RI; at this

time, the main control board would switch the rotation direction of the scraper bar motor

according to the setting of the internal control program to enable the scraper bar 215 to move

towards an opposite direction when detecting that the current flowing through the resistor RI is increased; and similarly, the scraper bar 215 would change the direction again when colliding with the scraper bar baffle plate 216 on the other side, back and forth, thereby realizing cleaning for the transparent window 212.

[0139] It can be seen from the above working principle that in order to realize control of the reciprocating motion of the scraper bar 215, a current detection module needs to be arranged to

detect a current flowing through the scraper bar motor; and when the current of the scraper bar

motor is greater than a specified threshold, a detection value output by the current detection

module causes the main control board to control switching of the rotation direction of the scraper

bar motor.

[0140] In the circuit shown in FIG. 10, the resistor RI and a mechanism for detecting the current flowing through the resistor RI constitute the current detection module. A specific

principle of the circuit to realize current detection is as follows: a voltage value of a positive

electrode of the resistor RI is introduced into a certain input port of the main control board; the

main control board calculates a current value flowing through the resistor RI according to the

voltage value introduced into the input port; if the voltage value of the positive electrode of the

resistor RI is greater than a threshold set in the main control board, it may be determined that the

current flowing through the resistor RI is extremely high, indicating that the motion of the

scraper bar 215 is stopped by the scraper bar baffle plate 216; the main control board changes the

conduction state of the H bridge circuit by changing an output value of an output port of the

control end coupled with QI to Q4, thereby changing the rotation direction of the scraper bar

motor to realize the reciprocating motion of the scraper bar 215.

[0141] The time of starting the scraper bar mechanism may be determined according to the

control of the sensor and a signal receiving condition. For example, when the main control board

uses a current or voltage required by a maximum transmitting strength to supply power to the

transmitter 211-1, if the receiver 211-2 still cannot receive a stable signal, it is necessary to start

the scraper bar mechanism to operate to clean the transparent window 212. After cleaning for a

period of time (a time parameter may be preset as specific cleaning time), if the receiver 211-2

may obtain stable signals smoothly, it is indicated that an infrared signal may be transmitted

normally, and the scraper bar mechanism stops the operation.

[0142] The arrangement of the above-mentioned dust detection apparatus has the following beneficial effects:

[0143] (1) The dust detection apparatus is arranged outside the adapter pipe for communicating the dust barrel of the vacuum cleaner with the air duct pipe, so that a dust signal is detected at a

position near an inlet from where dust is sucked into the vacuum cleaner, achieving the effects of

accurately collecting a current dust concentration and identifying large particulate dust; and

furthermore, by means of the protection for the transparent window, dust accumulation at the

transmitting end and the receiving end of the dust detection apparatus is relieved, reduction of

the sensitivity in the use process of the dust sensor is avoided, and the precision of dust

concentration detection is improved.

[0144] (2) The sensor is arranged at the pipe wall portion of the dust barrel or the air duct pipe, so that the technical effect that the dust sensor may not block air intake of an air duct is achieved;

and furthermore, the technical effect of detecting the dust concentration is achieved in

combination with the arrangement of the transparent window.

[0145] (3) By the arrangement of the scraper bar and the scraper bar baffle plates, the

transparent window may be cleaned, so that the light path between the transmitter and the

receiver of the sensor may not be shielded, and the sensitivity for receiving a dust detection

signal is improved.

[0146] The air pressure detection and protection system 300 of the present disclosure is described below.

[0147] An embodiment of the present disclosure provides an air pressure detection and

protection system of a vacuum cleaner to solve the technical problem, in the prior art, that a

change in an air pressure in the vacuum cleaner may not feedback a vacuum cleaner actuation

element such as a motor and a display element. By comparison of an air pressure value with a

preset critical value, when the critical value is reached, the related actuation elements are

controlled in different ways, so that effective protection for the use of the vacuum cleaner is

realized.

[0148] The general thought of the technical solutions in the embodiment of the present

disclosure for solving the above technical problem is as follows:

[0149] an air pressure value detected by an air pressure detection module is input into a

comparator; critical values at which all the actuation elements are controlled are preset in the comparator; and the corresponding actuation elements are controlled to perform corresponding control by means of determining whether the detected air pressure value reaches a critical value.

The air pressure detection module may be arranged at different positions of the vacuum cleaner

to perform different control according to detection results of different positions.

[0150] In order to better understand the above solution, the above technical solution will be described below with reference to the accompanying drawings and specific implementation

modes.

[0151] Referring to FIG. 11, a logic block diagram of an air pressure detection and protection system of a vacuum cleaner of an embodiment of the present disclosure is illustrated.

[0152] The air pressure detection and protection system 300 of the vacuum cleaner of the

embodiment of the present disclosure includes an air pressure detection module 310, a first

converter 621, a comparator 320, and a first controller 611.

[0153] The air pressure detection module 310 is arranged at a vacuum cleaner air pressure

sensitive position. The vacuum cleaner air pressure sensitive position includes a main suction

port position, a dust barrel position, an air outlet position, and a motor inner cavity position, and

the air pressure detection module 310 may be arranged at one of the above positions, or may be

arranged at all the positions. The air pressure detection module 310 obtains an air pressure

sample through a sampling air pipe communicating with the vacuum cleaner air pressure

sensitive position, and the air pressure detection module 310 detects an air pressure value of the

vacuum cleaner air pressure sensitive position in real time during the operation of the vacuum

cleaner, and converts the air pressure value into an electric signal. The air pressure detection

module 310 may be specifically implemented in various ways. In the prior art, there have been

various pressure sensor chips used for measuring an air pressure, which may be selected

according to a requirement.

[0154] The first converter 621 is arranged in the vacuum cleaner and is in signal connection

with the air pressure detection module 310; and the first converter 621 receives the electric signal

of the air pressure detection module 310, and converts the electric signal into a digital signal that

reflects the air pressure value. The air pressure detection module 310 and the first converter 621

may be specifically implemented in various ways. In the prior art, there have been various air

pressure detection integrated circuits, including air pressure sensors and signal processing circuits, used for measuring an air pressure, which may be selected according to a requirement.

Actually, these chips integrate the air pressure detection module 310 with the first converter 621

to realize air pressure detection and output the digital signal that may be received by the main

control board of the controller and reflect the air pressure value.

[0155] The comparator 320 is arranged in the controller, is in signal connection with the first converter 621, and is used for receiving the digital value that is provided by thefirst converter

621 and reflects the air pressure value and comparing the digital value with all the critical values

preset in the comparator 320 to obtain a corresponding comparison result.

[0156] The first controller 611 is generally a portion in the controller 610, which is related to

air pressure detection and air pressure detection-based control. Of course, it may also be a

control unit disposed independently. In terms of the implementation mode, the first controller

may be a related control program in the controller 610, stored related parameter information, and

an arithmetical unit for operating the related control program. The first controller 611 is used

here to describe its independence. The first controller 611 is used for receiving the comparison

result output by the comparator 320, and outputting, according to the comparison result,

corresponding control instructions to all the actuation elements of the vacuum cleaner. The

actuation elements include the light emitting display unit, the dust collection motor, and an alarm

element.

[0157] In the case that an output of the first converter 621 has been a digital value, the above

comparator 320 may actually compare the air pressure detection numerical value provided by the

first converter 621 with the critical value data pre-stored in a storage unit in the main control

board (i.e., a micro control unit (MCU) chip having computing and storage functions) included

in the first controller 611. This comparison process may be realized by using the computing

function provided by the main control board. The comparison results are provided to the first

controller 611, and the first controller 611 may control the relevant actuation elements according

to the comparison result and preset programs.

[0158] Referring to FIG. 12, a work flow diagram of a controller of an embodiment of the

present disclosure is illustrated. It should be noted that the flow diagram is only a schematic flow

diagram provided according to a certain specific implementation mode. There is no sequential

order for several determination steps provided in the diagram. That is, S110, S120, S130, and

S140 provided in the flow diagram of FIG. 12 may be in a random order, or may be executed

concurrently completely; and one or more of S110, S120, S130, and S140 may also be executed,

and not all of them are executed.

[0159] The first controller 611 may selectively control one or more of the actuation elements according to whether the detected air pressure value reaches a certain specific critical value, and

does not control other actuation elements.

[0160] At S110: the detected air pressure value is less than a lowest allowable threshold (a first threshold), and in response to this comparison result, the first controller 611 sends a stop control

instruction to the dust collection motor and sends an alarm-on control instruction to the alarm

element.

[0161] At this step, the detected air pressure value is less than the lowest allowable threshold, indicating that it is hard for external air to enter the vacuum cleaner and an air path has been

severely blocked. For example, the air pipeline for air intake or a dust collection channel is

blocked at any part. If it lasts for extremely long time, it will cause the dust collection motor to

heat due to extremely high resistance, which may bum out the motor and a plastic component of

the vacuum cleaner. To this end, the machine needs to be stopped and sounds an alarm.

[0162] If the detected air pressure value is greater than a highest allowable threshold (a second

threshold), in response to this comparison result, the first controller 611 sends a stop control

element.

[0163] At this step, the detected air pressure value is greater than the highest allowable

threshold, indicating that it is hard for air of the vacuum cleaner to discharge and the air path has

been severely blocked. For example, an air outlet channel or an air outlet position is blocked. If it

lasts for extremely long time, it will cause the dust collection motor to heat due to extremely

high, which may bum out the motor and a plastic component of the vacuum cleaner. To this end,

the machine needs to be stopped and sounds an alarm.

[0164] At S120: the detected air pressure value is greater than the lowest allowable threshold

and less than a normal value, and in response to this comparison result, the first controller 611

sends to the dust collection motor a control instruction for increasing the operation power.

[0165] In the case that the detected air pressure is greater than the lowest allowable threshold and less than the normal value, it is indicated that an air intake path is extremely high in resistance, but it is possible to recover a normal working state of the vacuum cleaner by increasing a suction force. In this case, the control instruction for increasing the operation power may be sent to the dust collection motor till the air pressure value is normal.

[0166] The detected air pressure value is less than the highest allowable threshold and greater than the normal value, and in response to this comparison result, the first controller 611 sends to

the dust collection motor a control instruction for decreasing the operation power; and when the

detected air pressure value reaches the normal value, the controller re-controls the dust collection

motor to recover its normal work.

[0167] In the case that the detected air pressure is less than the highest allowable threshold and

greater than the normal value, it is indicated that an air outlet path is extremely high in resistance,

but it is possible to recover the normal working state of the vacuum cleaner by decreasing the

suction force. In this case, the control instruction for decreasing the operation power may be sent

to the dust collection motor till the air pressure value is normal.

[0168] After the detected air pressure reaches the normal value, the controller re-controls the dust collection motor to recover its normal work.

[0169] At S130: an air pressure value detected at a filter element position is less than a set filter

element replacement prompt threshold, and in response to this comparison result, the first

controller 611 controls an output element to output prompt information that the filter element

needs to be replaced.

[0170] The step is carried out according to the detection result of the air pressure value of the

filter element position. When the air pressure value of the filter element position is too low, it is

indicated that there is too much dust accumulated in the filter element, and the filter element

needs to be replaced. At this time, the first controller 611 may send to the output element a

control instruction for filter element replacement, and the output device outputs a prompt. A

specific prompt manner may be realized according to an output manner of the vacuum cleaner.

For example, a vacuum cleaner having a display screen may display the prompt through the

display screen, a vacuum cleaner having a speech prompt function may make a prompt via a

speech, and a prompt may also be made according to the states of the LED lamps arranged on the

surface of the vacuum cleaner.

[0171] At S140: an air pressure value at a dust barrel or motor cavity position is less than a set dust barrel dusty threshold, and in response to this comparison result, the first controller 611

controls the output element to output prompt information that dust needs to be cleaned.

[0172] At this step, the detection result of the air pressure detection value of the dust barrel position is used. When the detection result is less than the set dust barrel dusty threshold, it is

indicated that there is too much dust accumulated in the dust barrel, which needs to be cleaned,

and the first controller 611 controls the output element to output the prompt information that dust

needs to be cleaned.

[0173] One specific example is now taken for description below:

Lowest allowable Filter element Dust barrel dusty Normal value

threshold prompt threshold threshold

20 40 60 90

[0174] When the detected air pressure value is 10, a prompt for motor stop is made, and an alarm signal is sent out;

[0175] when the detected air pressure value is 30, the motor is controlled to increase the power;

[0176] when the detected air pressure value of the filter element position is 40, a prompt for filter element replacement is made;

[0177] when the detected air pressure value of the dust barrel position is 60, a prompt that the

dust barrel is dusty, and dust in the dust barrel needs to be cleaned is made.

[0178] The air pressure detection values at different positions may be sampled by an air

pressure sampling air pipe, and there have been various reliable inexpensive air pressure

detection chips in the prior art, so that a plurality of detection positions may be set for one

vacuum cleaner, and different critical values are specifically set according to different detection

positions to achieve different control effects.

[0179] The speed adjustment control system 400 of the present disclosure is described below.

[0180] Referring to FIG. 13, a logic block diagram of a vacuum cleaner speed adjustment

control system provided by the present embodiment is illustrated.

[0181] The vacuum cleaner speed adjustment control system 400 provided by the present

embodiment includes a touch sensing member 410, a power control device 420, a second

controller 612, and a second converter 622.

[0182] The touch sensing member 410 is arranged on a surface of a shell of the main body and used for generating a touch sensing electric signal in response to a touch operation; and the second converter 622 is coupled with the touch sensing member 410 and used for converting the touch sensing electric signal into a power indication signal or a rotation speed indication signal that may be identified by the second controller 612.

[0183] Further, the touch sensing member 410 is arranged on the surface of the shell of the vacuum cleaner, and is used for receiving touch control and generating, according to a state of the touch control, the touch sensing electric signal.

[0184] The second converter 622 receives the touch sensing electric signal, and converts it into the power indication signal or the rotation speed indication signal that may be identified by the second controller 612.

[0185] The second controller 612 receives the power indication signal or the rotation speed indication signal, and generates, under the control of an internal control element, a power given signal corresponding to the power indication signal or a rotation speed given signal corresponding to the rotation speed indication signal.

[0186] The power control device 420 is used for controlling, according to the power given signal or the rotation speed given signal, a motor of the vacuum cleaner to move at a power given by the power given signal or at a rotation speed corresponding to the rotation speed given signal. The motor of the vacuum cleaner here is the motor included in the above-mentioned suction unit.

[0187] The present embodiment may be applicable to a handheld wireless vacuum cleaner or a conventional AC vacuum cleaner. If the wireless vacuum cleaner is used, the corresponding motor is a direct current motor, and the corresponding power control device is a metal-oxide-semiconductor (MOS) field effect transistor or an insulated gate bipolar transistor (IGBT); and if the AC vacuum cleaner is used, the corresponding motor is a series excitation motor, and the corresponding power control device is a thyristor. The touch sensing member may be a field printed circuit (FPC) touch film, and the sensed touch sensing electric signal is a capacitance signal.

[0188] The vacuum cleaner speed adjustment control system provided by the present embodiment adopts the touch sensing member, the second converter, the second controller and the power control device; the sensed touch sensing electric signal is converted into the power indication signal or the rotation speed indication signal by means of a change in the state of the touch control, the power given signal or the rotation speed given signal is generated by means of the second controller; and the conduction of the dust collection motor is controlled by means of the power control device, thereby achieving a technical effect of stepless speed adjustment on the vacuum cleaner and enhancing the experience of a user.

[0189] Further, the touch sensing member may include: at least two sensing units and a touch circuit. The touch circuit is used for generating a corresponding touch sensing electric signal when there is a touch operation on one of the at least two sensing units. The at least two sensing units are continuously disposed in sequence along one direction. The touch circuit is further used for generating a plurality of sensing touch signals that are arranged in chronological order and change proportionally when there is a touch operation from a first sensing unit in the at least two sensing units to a second sensing unit. Specifically, as shown in FIG. 14, a schematic structural diagram of the touch sensing member 410 provided by the present embodiment is illustrated. The touch sensing member 410 provided by the present embodiment includes sensing units 411, an independent unit 412 and an input/output terminal 413.

[0190] The sensing units 411 include more than 3 units that are arranged according to a certain rule. The sensing units 411 are continuously disposed in sequence along a specified direction, and one signal line of each sensing unit 411 is coupled with the input/output terminal 413 of the touch sensing member 410; and the input/output terminal 413 further includes a ground line shared by the sensing units 411. The sensing units 411 may use the capacitive sensing principle to realize touch detection.

[0191] The input/output terminal 413 provides signal connection, and outputs detection results of the sensing units 411 and the independent unit 412 to a related circuit or the controller 610, so that a detection result formed by a capacitance change formed by movement of a user on the sensing units 411 is converted into a speed adjustment instruction for manually regulating the speed of the vacuum cleaner. The independent unit 412 is a selectively settable unit, and this unit is disposed to be spaced from the sensing units 411; and the vacuum cleaner enters automatic speed adjustment by touching this independent unit 412.

[0192] The sensing units 411 perform manual speed adjustment on the vacuum cleaner, and the independent unit 412 may control the vacuum cleaner to enter the automatic speed adjustment, so that a technical effect of combining automatic speed adjustment and manual speed adjustment for the vacuum cleaner is achieved, and the operation experience of a user is effectively enhanced.

[0193] Referring to FIG. 14, the sensing units 411 provided by the present embodiment includes a head unit 411-1, a plurality of middle units 411-2 and a tail unit 411-3; and adjacent

edges of all the sensing units 411 are in embedded connection with each other. Specifically, the

adjacent edges are of a sawtooth shape or a wave type for embedded connection.

[0194] For example, in the example of FIG. 14, the adjacent edges of the sensing units 411 are of a sawtooth shape for embedded connection. In the drawings, four sawtooth-shaped adjacent

edges are illustrated, and the middle units 411-2 are disposed between the four sawtooth-shaped

adjacent edges. Specifically, the middle units 411-2 include a first middle unit 411-21, a second

middle unit 411-22 and a third middle unit 411-23; all the units in the sensing units 411 are

stacked and then arranged into a rectangle; and adjacent units have gradual alternate changes in

sections in a touch moving direction. If the touch of the user horizontally moves to the tail unit

411-3 from the head unit 411-1, capacitance detection results obtained by all the units gradually

change as contact areas gradually change; the touch is transferred between all the units to

smoothly realize inputting an instruction to send out a smoothly changed speed adjustment

instruction; and smooth speed adjustment for the dust collection motor of the vacuum cleaner

may be realized. In order to facilitate illustration of the changes of the unit states of the sensing

units 411, a moving direction from the head unit 411-1 to the tail unit 411-3 is taken as an

example for illustration. In an actual operation, a user may move from the middle unit 411-2 to

the head unit 411-1 or the tail unit 411-3, and the moving direction is not limited.

[0195] When a finger touches the head unit 411-1, the head unit 411-1 has a first touch area

contacted with the finger (if the proportion of the head unit 411-1 and the proportion of the

finger are appropriate, the head unit 411-1 may be 100% in touch sensing); when the finger

moves from the head unit 411-1 to the first middle unit 411-21, the finger touches the

sawtooth-shaped adjacent edges; and at this time, the first touch area of the head unit 411-1 is

reduced, and a touch area of the first middle unit 411-21 is enlarged.

[0196] By use of the setting of embedded connection between the head unit 411-1 and the first middle unit 411-21, at the connection of their adjacent edges, the touch proportion of the first touch area of the head unit 411-1 changes in the moving direction of the user. That is, the touch area of the first middle unit 411-21 is enlarged while the first touch area of the head unit 411-1 is reduced, so that the touch sensing electric signal sensed by the sensing circuit (not shown) coupled with the input/output terminal 413 changes proportionally; and correspondingly, in case of moving from the first middle unit 411-21 to the tail unit 411-3, for two units with the adjacent edges, the touch areas also change proportionally; and a direction of sliding of the user and which sensing units 411 are touched may be known by virtue of the touch sensing signals sensed by the sensing circuit (not shown) coupled with the input/output terminal 413, so that the user feels that the speed adjustment to the vacuum cleaner is continuous, and a technical effect of smoothly performing stepless speed adjustment on the vacuum cleaner is achieved.

[0197] In one optional embodiment, the tail unit 411-3 and the head unit 411-1 are electrically coupled with each other. If they are connected into the same unit via a silver wire, when the user slides from the head unit 411-1 to the tail unit 411-3, the head unit 411-1 and the tail unit 411-3 generate the same touch sensing electric signals in sequence, indicating that one sliding process ends. This solution may improve the accuracy and sensitivity of touch and enhance the user experience.

[0198] In one optional implementation, the power may also be adjusted, as long as sliding is carried out according to a predetermined direction between any two points between the head unit 411-1 and the tail unit 411-3. When it is set that sliding from the head unit 411-1 to the tail unit 411-3 means increasing the power, a first point and a second point are randomly selected in sequence along a direction from the head unit 411-1 to the tail unit 411-3. Sliding from the first point to the second point by the user means sliding adjustment for increasing the power; and sliding from the second point to the first point by the user means sliding adjustment for decreasing the power. A power value of the first point is not equal to a power value of the second point, so that sliding carried out between any two points in a region between the head unit 411-1 and the tail unit 411-3 may cause a change in power. This change is adjustment for the power. Similarly, if it is set that sliding from the head unit 411-1 to the tail unit 411-3 means decreasing the power, sliding between any two points between the two units may change the power value. This change is also called adjustment for the power value. By sliding between two points to adjust the power, the usage by a user is more convenient, and the user experience is enhanced.

[0199] As shown in FIG. 15 and FIG. 16, FIG. 15 is a schematic structural diagram of a touch panel provided by the present embodiment, and FIG. 16 is a schematic diagram of a positional

relationship between a touch sensing member and a touch panel.

[0200] The vacuum cleaner speed adjustment control system further includes a touch panel 430. An upper part of the touch panel 430 is a touch surface for receiving the touch control; the touch

sensing member 410 is attached to a lower part of the touch panel 430; and the touch panel 430

may not affect or may help the touch sensing member 410 to receive a touch control that is

directly loaded on the touch surface.

[0201] Optionally, a touch direction icon 430-1 is arranged on the touch panel 430, and a user

slides on the touch panel 430 along a prompt direction of the touch direction icon 430-1.

[0202] Optionally, the touch direction icon 430-1 includes a start icon 430-11 and an end icon

430-12. When the touch sensing member 410 is attached to the lower part of the touch panel 430,

the touch sensing member 410 is correspondingly attached between the start icon 430-11 and the

end icon 430-12, with the head unit 411-1 corresponding to the start icon 430-11 and the tail unit

411-3 corresponding to the end icon 430-12. When conducting speed adjustment, a user slides

between the start icon 430-11 and the end icon 430-12 with the finger, or moves between the

start icon 430-11 and the end icon 430-12 with the finger in a proximity sensing manner, so as to

realize the speed adjustment for the vacuum cleaner.

[0203] Optionally, a material of the touch panel 430 may be a plastic member, glass or a metal

plated layer.

[0204] As shown in FIG. 17, the present disclosure further provides a vacuum cleaner which

adopts the above-mentioned vacuum cleaner speed adjustment control system. Moreover, the

vacuum cleaner speed adjustment control system is mounted on an outer surface of the vacuum

cleaner.

[0205] Based on the contents of the vacuum cleaner display system and speed adjustment

control system described above, a control method provided by an embodiment of the present

disclosure is described below.

[0206] One embodiment of the present disclosure provides a control method for cleaning

device. The cleaning device may be a handheld vacuum cleaner, a suction, sweeping and mopping all-in-one machine, and the like. Specifically, the control method includes:

[0207] At S11, in response to an interaction event triggered by a user through an interaction element, an indication signal is generated based on an interaction gesture sensed in the

interaction event, where the interaction element is arranged on the cleaning device and exposed

outside.

[0208] At S12, a corresponding given signal is sent to a suction unit of the cleaning device according to the indication signal such that the suction unit works according to the given signal.

[0209] In one implementable embodiment, the interaction element includes at least two sensing units that are continuously disposed in sequence along one direction. Correspondingly, S11 that

"an indication signal is generated based on an interaction gesture sensed in the interaction event"

may specifically include:

[0210] At SlIa, when the interaction gesture is a sliding gesture of moving from a first sensing unit in the at least two sensing units to a second sensing unit along the direction, a plurality of

sensing touch signals that are generated in a process of touching from the first sensing unit to the

second sensing unit and arranged in chronological order and change proportionally are obtained.

[0211] At S11b, a plurality of indication sub-signals that are arranged in chronological order and change proportionally are generated based on the plurality of sensing touch signals that are

arranged in chronological order and change proportionally,

[0212] where the indication signal includes the plurality of indication sub-signals

[0213] Further, S12 that "a corresponding given signal is sent to a suction unit of the cleaning device according to the indication signal such that the suction unit works according to the given

signal" may specifically include:

[0214] given sub-signals corresponding to all the indication sub-signals are sent to the suction

unit of the cleaning device in sequence in chronological order according to the plurality of

indication sub-signals such that the suction unit works as the time varies in sequence according

to the corresponding given sub-signals.

[0215] In the present embodiment, since the continuously changing given sub-signals are sent

to the suction unit (i.e., a motor), the motor outputs continuously changing (such as gradually

increasing or decreasing) power or rotation speeds in response to all the given sub-signals, thus

realizing smooth speed adjustment for the motor, achieving a technical effect of stepless speed adjustment for the motor instead of directly skipping from low power to high power, and effectively enhancing the operation experience of the user.

[0216] In another implementable technical solution, S1 that "an indication signal is generated based on an interaction gesture sensed in the interaction event" may further be realized using the following steps:

[0217] at SI1c, when the interaction gesture is a sliding gesture of moving from one of the at least two sensing units to the other sensing units along the direction, a sliding direction of the sliding gesture is determined based on a touch sensing signal sensed by the interaction element;

[0218] at Slid, a power or rotation speed adjustment solution for the suction unit is determined based on the sliding direction; and

[0219] at Sl1e, the indication signal is generated according to the power or rotation speed adjustment solution.

[0220] Slic may specifically include:

[0221] when the interaction gesture is a sliding gesture of moving from one of the at least two sensing units to the other sensing units along the direction, the sensing unit that is touched in the sliding gesture is acquired based on the touch sensing signal sensed by the interaction element; and

[0222] the sliding direction of the sliding gesture is determined according to a preset sensing unit arrangement order.

[0223] Correspondingly, S12 that "a corresponding given signal is sent to a suction unit of the cleaning device according to the indication signal such that the suction unit works according to the given signal" may be realized using the following steps:

[0224] at Si2c, a power or rotation speed adjustment trend for the suction unit is determined according to the sliding direction;

[0225] at Si2d, an adjustment amount is determined according to the sensing unit that is touched in the sliding gesture; and

[0226] at Si2e, the power or rotation speed adjustment solution for the suction unit is made according to the power or rotation speed adjustment trend and the adjustment amount.

[0227] Further, the control method provided by the present embodiment may further include the following steps:

[0228] At S13, parameter information generated in a working process of the cleaning device is acquired.

[0229] At S14, the interaction element is controlled, according to the parameter information, to provide corresponding output information to an outside.

[0230] In one implementable technical solution, the parameter information includes: a dust concentration detected by a sensor in the working process of the cleaning device; and the

interaction element includes a light emitting display unit; and the light emitting display unit

includes a plurality of light emitting devices. Correspondingly, S14 that "the interaction element

is controlled, according to the parameter information, to provide corresponding output

information to an outside" includes:

[0231] at Sl4a, when the dust concentration is less than or equal to a lowest threshold, the light

emitting devices in a first color are all turned on;

[0232] at Sl4b, when the dust concentration is greater than or equal to a highest threshold, the

light emitting devices in the first color are all turned off; and

[0233] at Sl4c, when the dust concentration is between the lowest threshold and the highest threshold, a corresponding number of light emitting devices in the first color are turned on

proportionally according to a numerical value of the dust concentration.

[0234] Further, Si4 that "the interaction element is controlled, according to the parameter

information, to provide corresponding output information to an outside" may further include:

[0235] at Sl4d, when the dust concentration is less than or equal to the lowest threshold, the light emitting devices in a second color are all turned off;

[0236] at Sl4e, when the dust concentration is greater than or equal to the highest threshold, the

light emitting devices in the second color are all turned on; and

[0237] at Sl4f, when the dust concentration is between the lowest threshold and the highest

threshold, partial light emitting devices in the second color are turned on according to a

numerical value of the dust concentration.

[0238] In case that the plurality of light emitting devices are disposed in a circle according to a

circular ring, correspondingly, Sl4c and Sl4f are integrated, that is, "when the dust

concentration is between the lowest threshold and the highest threshold, a corresponding number

of light emitting devices in the first color are turned on proportionally, and partial light emitting devices in the second color are turned on according to a numerical value of the dust concentration" includes:

[0239] when the dust concentration is between the lowest threshold and the highest threshold, a first radian is determined according to the numerical value of the dust concentration; and

[0240] starting from a set start point of the circular ring, the light emitting devices in the second color within a first radian range are turned on, and the light emitting devices in the first color within a second radian range are turned on;

[0241] the second radian is at least one portion of the remaining radian in a circle of the circular ring except the first radian.

[0242] The above step that "starting from a set start point of the circular ring, the light emitting devices in the second color within a first radian range are turned on, and the light emitting devices in the first color within a second radian range are turned on" may specifically include:

[0243] starting from the set start point of the circular ring, the light emitting devices in the second color within the first radian range are turned on;

[0244] the light emitting devices in the first color within the second radian range are turned on, wherein there is a third radian between the first radian and the second radian; and

[0245] the light emitting devices in the first color and the light emitting devices in the second color within a third radian range are simultaneously turned on to realize overlapping display of the two colors to show a color gradient effect.

[0246] The technical solutions provided by all the embodiments of the present disclosure are described below in combination with specific application scenarios.

[0247] Application scenario 1

[0248] A user uses a handheld vacuum cleaner to do some cleaning in the house. At the beginning of initiation, the vacuum cleaner works at default power (such as low power). The user wants to increase the power or rotation speed of the motor of the vacuum cleaner because the user feels dusty in the living room at home. The user slides to touch the interaction element along an arrangement direction of the sensing keys; after sensing the sliding gesture of the user, the interaction element acquires a plurality of sensing touch signals that are generated by all the sensing keys touched by the sliding gesture of the user and arranged in chronological order and change proportionally. The controller of the handheld vacuum cleaner generates, based on the plurality of sensing touch signals that are arranged in chronological order and change proportionally, a plurality of indication sub-signals that are arranged in chronological order and change proportionally, and sends given sub-signals corresponding to all the indication sub-signals to the motor in chronological order. The power control device of the handheld vacuum cleaner controls, according to all the given sub-signals received in chronological order, the motor to work according to the corresponding given sub-signals in order as the time varies. In the whole process, the user may feel the smooth speed adjustment of the motor through the gradually rising working noise made by the vacuum cleaner, thereby achieving a technical effect of stepless speed adjustment for the motor, instead of such a feeling that the vacuum cleaner directly makes noises from low to high due to a process of directly skipping from low power to high power, and effectively enhancing the operation experience of the user. In addition, the stepless speed adjustment for the motor is realized, and the user may select any power/rotation speed mode, at which the motor works, between the lowest power/rotation speed and the highest power/rotation speed, rather than the prior art in which the user may only select from a limited number of set fixed values. The user has more choices and better experience.

[0249] The user feels the bedroom is less dusty and cleaner than the living room when cleaning the bedroom. At this time, the user reversely slides on the interaction element, and the interaction element generates a plurality of given sub-signals arranged in chronological order after sensing the sliding gesture of the user. The power control device of the handheld vacuum cleaner controls, according to all the given sub-signals received in chronological order, the motor to be gradually decreased from a high power or rotation speed to a specified power or rotation speed according to the corresponding given sub-signals in order as the time varies.

[0250] Application scenario 2

[0251] A user initiates a handheld vacuum cleaner to do some cleaning at home. The display screen of the vacuum cleaner displays parameter information generated by the vacuum cleaner in the current working process. For example, the display screen displays a power or rotation speed of the motor, and the user finds that the motor works under a low-power mode through display contents on the display screen. When the user wants to increase the power or rotation speed of the motor, the user slides on the interaction element, and the controller of the vacuum cleaner then controls, according to a plurality of sensing touch signals generated by the sliding gesture, the motor to gradually increase the power or rotation speed to a user specified value. The display screen also displays a remaining battery capacity. The user may charge the vacuum cleaner immediately when seeing that the remaining capacity is low. The display screen further displays a dust concentration. The user sees a circular ring as shown in FIG. 4. Starting from a set start point of the circular ring, the light emitting devices in the second color within the first radian range are turned on; the light emitting devices in the first color within the second radian range are turned on; the light emitting devices in the first color and the light emitting devices in the second color within the third radian range between the first radian and the second radian are simultaneously turned on to show a gradient effect of two colors. The user may generally estimate the dust concentration according to the size of the first radian to master the dust concentration condition of each area at home in real time, so that it is convenient to adjust the power or rotation speed of the motor at any time through the interaction element. In addition, the light emitting devices are turned on according to the circular ring manner as shown in FIG. 4, so that the appearance of the vacuum cleaner is more attractive.

[0252] Application scenario 3

[0253] A user uses a handheld vacuum cleaner to do cleaning at home. The light emitting devices in the first color on the vacuum cleaner are all turned off, and the second light emitting

devices in the second color are all turned on. The user may know that the current dust

concentration is extremely large after seeing this; and the user may increase the power or rotation

speed of the motor to, for example, a highest value through the interaction element if the power

or rotation speed of the motor of the vacuum cleaner is low at this time. Of course, the controller

of the vacuum cleaner may also automatically adjust the power or rotation speed of the motor of

the vacuum cleaner according to the dust concentration.

[0254] Application scenario 4

[0255] When a user initiates a handheld vacuum cleaner or in a process that the user uses the

handheld vacuum cleaner to do cleaning, if the display screen of the vacuum cleaner displays an

identifier that a wireless network (such as wifi) is not connected successfully, the user may call a

corresponding function on the vacuum cleaner to reset the wireless network connection. In the

process that the user cleans the house, the vacuum cleaner suddenly does not work. At this time,

the user sees that the display screen of the vacuum cleaner displays a rolling brush fault identifier.

By means of this identifier, the user learns that the rolling brush fails. The user stops cleaning,

checks the failure cause of the rolling brush, finds that the rolling brush may not rotate normally

because it is wound by debris, and manually clears the wound debris to remove the fault. After

the debris that hinders the rolling brush from rotating is cleared away, the user initiates the

vacuum cleaner again, and sees that the rolling brush fault identifier on the display screen

disappears, and the user may continue holding the vacuum cleaner to clean other areas.

[0256] A method for regulating the power or rotation speed of the dust collection motor of the present disclosure is described below.

[0257] An embodiment of the present disclosure provides a method for regulating power or rotation speed of a dust collection motor to solve the technical problem that it is not accurate

using a single index to adjust the power of the motor in the prior art. By means of combining at

least two indexes, a given value of the power of the motor is obtained, and accurate adjustment

to the power of the motor is realized.

[0258] The general thought of the technical solutions in the embodiment of the present

disclosure for solving the above technical problem is as follows:

[0259] at least two dust indexes detected by a dust detection unit are input into a vacuum cleaner control system; the vacuum cleaner control system pre-configures a dust index-combined

control solution for the power of the motor; whether the detected dust indexes reach a

corresponding range in the vacuum cleaner control system is determined, and the dust collection

motor is controlled to execute a corresponding operation, such as increasing the current power or

decreasing the current power, to reach an expected value of the power of the motor with

reference to the expected value of the power or rotation speed of the motor within this range. It

should be noted that there may be some differences in a specific control relationship between the

power control and the rotation speed control of the dust collection motor, but the essence is

exactly consistent. The change directions of the power and the rotation speed are consistent, and

increase of the power and the rotation speed means increase of the suction force of the dust

collection motor. In order to adjust the suction force of the dust collection motor, it is feasible to

use power adjustment or rotation speed adjustment, and their control solutions are basically the

same.

[0260] In order to better understand the above solutions, the above technical solutions will be described below with reference to the accompanying drawings and specific implementation modes.

[0261] Referring to FIG. 18, a flow diagram of a method for regulating power of a dust collection motor of a vacuum cleaner of an embodiment of the present disclosure is illustrated.

[0262] The method for regulating the power or rotation speed of the dust collection motor of the vacuum cleaner of the embodiment of the present disclosure includes:

[0263] At S210: dust indexes provided by a dust detection unit are received, wherein the dust

indexes include at least two specific indexes capable of reflecting a dust condition.

[0264] The dust detection unit is a dust sensor, which may be an infrared sensor, a photoelectric

sensor or other types of sensors used for detecting the dust indexes in a dust path.

[0265] The dust indexes specifically refer to a dust concentration index and a dust particle size

index, or may also include an ambient air pressure index, an ambient humidity index or an

ambient temperature index and the like. The dust indexes are used for evaluating conditions of

dust in a working environment of the vacuum cleaner, and other environmental conditions

related to the dust, which are not limited to the above listed specific indexes.

[0266] At S220: the dust indexes are used to substitute into the predetermined power or rotation

speed control solution for the dust collection motor to obtain an expected value of the power or

rotation speed of the dust collection motor.

[0267] At this step, the dust indexes are explained by taking the dust concentration index and

the dust particle index as an example.

[0268] The predetermined power or rotation speed control solution for the dust collection

motor may adopt various forms. One of the forms is a predetermined multidimensional table.

The multidimensional table corresponds to numerical value ranges of the specific indexes that

reflects the dust conditions, and sets corresponding numerical values or numerical value ranges

of the power of the dust collection motor or the rotation speed of the dust collection motor for

each group of dust index value.

[0269] The following is a multidimensional table example of correspondence relationships of

dust concentration, particle size and power of the motor:

Number/particle 100 um 200 um 300 um 400 um 500 um

size

0 100 W 100 W 100 W 100 W 100 W 1 150 W 200 W 250 W 300 W 350 W

10 200 W 250 W 300 W 350 W 400 W

20 250 W 300 W 350 W 400 W 500 W

30 300 W 350 W 400 W 500W 500 W

[0270] By means of the content recorded in the above table, the expected value of the motor power may be obtained after detection data of the amount of dust (representing the dust

concentration) and the particle size of dust are obtained.

[0271] A functional form may also be adopted in addition to the tabular form. A method for realizing a predetermined power or rotation speed control solution for a dust collection motor by

adopting a functional form is specifically explained below.

[0272] The power or rotation speed control solution for the dust collection motor is a preset

power or rotation speed calculation function, including, but not limited to, the following

functional relationships:

P=a*T*D 3, P=a(T+D 3), P=aT+bD, P=a(T*D), P=a(T 2 +D 2

[0273] where a and b are constants; T is a dust concentration value; D is a dust particle size value; P is power, and power P in the formula may be replaced by rotation speed V; and at this

time, the numerical values of the constants a and b are changed as the circumstances may

require.

[0274] Any calculation function may be used. That is, in the motor power adjustment process, a variety of solutions may be combined flexibly as the circumstances may require.

[0275] The calculation function adopts any one of the above-mentioned power calculation

functions, or adopts two or more of the above-mentioned power calculation functions piecewise,

or adopts two or more of the above-mentioned power calculation functions simultaneously and

weights calculation values of all the power calculation functions.

[0276] For related parameters used in all the above functions, values of the specific parameters

may be determined according to an experiment, or an empirical formula or a theoretical formula

of the dust collection motor, or other methods.

[0277] At S230: a corresponding given value is provided to a dust collection motor control unit according to the expected value of the power or rotation speed of the dust collection motor.

[0278] The given value is an instruction value that the controller needs to provide to the dust collection motor control unit in order to obtain the expected value. The dust collection motor

control unit may appropriately control the dust collection motor according to the instruction

value to make the power or rotation speed of the dust collection motor to be equal to the

expected value. The desired given value may be calculated according to the control relationship

of the control system based on the expected value of the desired motor power or rotation speed,

and unnecessary details are not described here.

[0279] As a preferred implementation mode, an upper limit value Pmax and a lower limit value

Pminmay be set for the motor power. After the power of the dust collection motor is calculated

using the preset power or rotation speed calculation function, the power that the dust collection

motor needs to output is calculated in the following piecewise way.

Pmin (P Pmin)

Poutput= alculated value of the power calculation function (Pmin<P<Pmax)

1 Pmax (Pmax<P)

[0280] where Poutput is the expected value of the motor power output by the dust collection

motor of the vacuum cleaner in actual work; P is a calculated value of the power or rotation

speed of the dust collection motor obtained according to the calculationfunction; and Poutput, P,

Pmin and Pmax in the formula may be changed into corresponding rotation speed related values

Voutput, V, Vmin and Vmax of the dust collection motor.

[0281] As a preferred implementation mode, after the step that the dust indexes are used to

substitute into the predetermined power or rotation speed control solution for the dust collection

motor, the following steps may also be executed:

[0282] at S240: the obtained numerical value is corrected according to the ambient air pressure

index, the ambient humidity index or the ambient temperature index, and the corrected numerical

value is used as the expected value of the power or rotation speed of the dust collection motor.

[0283] This step means that other dust collection-related environment indexes may also be

comprehensively considered in addition to the dust concentration index and the dust particle size index. For example, under different humidity conditions, for the same dust condition, the suction force required by the vacuum cleaner is possibly greatly different. Under the condition of higher humidity, a higher suction force is required; and under the condition of lower humidity, the suction force may be lower. Therefore, the expected value of the power or rotation speed of the dust collection motor obtained using the above-mentioned function or table may be corrected according to these related indexes.

[0284] Optionally, the dust collection motor operates at a set initiation power or initiation rotation speed at the beginning of initiation.

[0285] Optionally, the dust concentration index is expressed by the amount of dust that passes

through a detection position within unit time.

[0286] Optionally, the dust particle size index is expressed by a mean value of diameters of

particles that pass through the detection position.

[0287] Optionally, the dust detection unit is realized using a dust detection sensor which is

arranged between a dust barrel and an air duct pipe of the vacuum cleaner and includes a

transmitter 211-1 and a receiver 211-2, and a matching circuit.

[0288] A method for improving the accuracy of a dust detection sensor of the present disclosure

is described below.

[0289] An embodiment of the present disclosure provides a method for improving the accuracy of a dust detection sensor to solve the problem that the dust detection sensor in the prior art

cannot automatically calibrate the sensor sensitivity during detection of the dust concentration.

The calibration for the sensitivity of the dust detection sensor is realized using the emission

strength of an automatic dust detector.

[0290] The general thought of the technical solutions in the embodiment of the present

disclosure for solving the problem of automatic calibration for the sensitivity of the sensor is as

follows:

[0291] a reference signal VS for evaluating the sensitivity of the dust sensor is arranged in the

main control board. The reference signal VS is a predetermined numerical value, and is a fixed

numerical value in the process that the dust sensor executes the current dust detection. This

numerical value may also have an appropriate value interval error, and is specifically determined

according to a sensitivity error range in the current detection work of the dust detector.

[0292] A detection electric signal VR of the dust detection sensor is input into the main control board, and the main control board compares the detection electric signal VR output by the

receiver 211-2 of the sensor with the reference signal VS to determine a relationship

therebetween. When their difference value does not meet a preset threshold interval, the

above-mentioned difference value may be reduced by means of adjusting an electric drive

numerical value (a power supply voltage is generally used) provided to the transmitter 211-1 of

the sensor, and the calibration is completed till the difference value is within the preset error

range. As such, when the dust sensor detects dust, if the detection electric signal VT and the

reference signal VS are not within the preset error range, the light emitting intensity of the

transmitter 211-1 is controlled automatically by means of adjusting the electric drive of the

transmitter 211-1 of the dust sensor, so as to change the size of the detection electric signal VR

of the dust sensor till the detection electric signal VR meets a preset requirement. By this

adjustment manner, the problem of automatic calibration for the sensitivity of the sensor is

effectively solved.

[0293] It should be noted that the detection electric signal VR is not an output signal for directly obtaining the dust concentration or the dust particle size, but an output signal directly

output by the receiver 211-2 or just simply amplified. Under a calibration environment, the

signal generally tends to be a stable value. For example, if the detection electric signal uses a

voltage signal, after the light emitting intensity of the transmitter 211-1 is adjusted in place, the

detection electric signal VR output by the receiver 211-2 would be stabilized quickly; and the

detection electric signal VR is the stabilized numerical value. The so-called calibration

environment is a situation where the vacuum cleaner does not work and the environmental dust

condition is normal. In this situation, the sensor may be corrected.

[0294] The above-mentioned detection electric signal VR and the reference signal VS generally

adopt voltage signals, but electric signals in other forms are not excluded, such as a current

signal, a pulse signal and a square wave signal.

[0295] What is corresponding to the detection electric signal VR is a dust state detection signal

serving as a basis for detecting the dust concentration or the dust particle size. The dust state

detection signal is a digital square wave signal obtained after amplifying or shaping the detection

electric signal VR.

[0296] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the accompanying drawings and specific

implementation modes.

[0297] Referring to FIG. 19, a flow diagram of a method for improving the accuracy of a dust detection sensor of an embodiment of the present disclosure is illustrated.

[0298] The method for improving the accuracy of the dust detection sensor of the embodiment of the present disclosure includes the following steps:

[0299] at S310: under a calibration working environment, an electric drive VT with a determined numerical value is provided for the transmitter 211-1 of the dust detection sensor.

[0300] The so-called calibration environment is a situation where the vacuum cleaner does not work and the environmental dust condition is normal. In this situation, the sensor may be

corrected. The electric drive VT provides driving power for the transmitter 211-1 of the dust

sensor. The transmitter 211-1 is usually a light emitting diode that emits light within a certain

drive voltage range. The electric drive VT may be characterized by a voltage value, a current

value, or other electric signal values. In most cases, the electric drive VT adopts a voltage value.

[0301] At this step, the electric drive VT being a determined numerical value means any voltage value within the drive voltage range of the dust sensor. The corresponding electric drive

VT is a voltage value provided under the calibration environment. Providing of the electric drive

VT is unrelated to the sensitivity of the dust detection sensor. This electric drive VT is provided

as an initial voltage value to be calibrated, and is not a voltage value during actual work.

Therefore, it may be randomly determined within a work characteristic range of the sensor. In a

specific implementation mode, the electric drive VT is provided by a voltage output port

provided on the controller.

[0302] At S320: a detection electric signal VR output by the receiver 211-2 of the dust

detection sensor is received.

[0303] The detection electric signal VR is a signal obtained after a light signal of the

transmitter 211-1 of the dust sensor is received by the receiver 211-2. As mentioned above, the

signal may be a signal that is simply amplified by an amplifier. The signal is accessed into the

main control board through an input port of the main control board in the controller, and is read

by the main control board.

[0304] At S330: a numerical value of the detection electric signal VR is compared with a numerical value of a preset reference signal VS to determine whether a difference value

therebetween is within a predetermined range.

[0305] The reference signal VS is a signal value that may be obtained in advance. The detection electric signal VR has best accuracy, stability and linearity if it works at the reference signal VS,

and the best measurement effect may be achieved. A specific value of the reference signal VS is

determined according to factory parameters of the sensor, or is obtained through experimental

measurement. This numerical value is recorded in a memory of the controller for reading.

[0306] It is actually very hard to make the detection electric signal VR to be equal to the

reference signal VS, so that a numerical value range surrounding the reference signal VS may be

set as a reasonable working region of the detection electric signal VR. In order to determine

whether the detection electric signal VR is within the predetermined range, whether an absolute

value of the difference value between the obtained numerical value of the detection electric

signal VR and the numerical value of the reference signal VS is less than or equal to a numerical

value corresponding to the predetermined range. For example, if the reference signal VS=2.4 (v),

and the predetermined range is 2.4 v±0.1 v, whether the detection electric signal meets the

requirement may be determined by IVR-2.4|<0.1.

[0307] At S340: if the difference value therebetween is within the predetermined range, the numerical value of the currently provided electric drive VT meets the requirement, and this

numerical value is used as an electric drive provided for the transmitter 211-1 of the dust

detection sensor for work.

[0308] The step is executed when a determination result of S330 is positive. At this time, it can

be considered according to the determination of S330 that the numerical value of the electric

drive VT currently provided for the transmitter 211-1 meets the requirement, and is available.

The electric drive VT determined at this step to be used is usually a numerical value that is

debugged for a plurality of times. After this step is executed, this calibration process may be

completed.

[0309] At S350: if the difference value therebetween is not within the predetermined range, the

numerical value of the electric drive VT is adjusted in an opposite direction according to a

comparison result of the numerical value of the detection electric signal VR and the numerical value of the reference signal VS, and the step that the detection electric signal VR output by the receiver 211-2 of the dust detection sensor is received is re-executed.

[0310] The step is executed when the determination result of S330 is negative. At this time, it can be considered according to the determination of S330 that the numerical value of the electric

drive VT currently provided for the transmitter 211-1 does not meet the requirement, and is

unavailable. Therefore, it is necessary to re-provide a numerical value of the electric drive VT. In

the case of using a new numerical value of the electric drive VT, S320 is re-executed for a new

round of test.

[0311] For the re-providing of the numerical value of the electric drive VT, the numerical value of the electric drive VT needs to be adjusted in an opposite direction according to the comparison

result of S330. The so-called adjustment in the opposite direction means:

[0312] if the detection electric signal VR is greater than the reference signal VS, it is indicated

that the light emitting brightness of the transmitter 211-1 needs to be lowered, and

correspondingly, the numerical value of the electric drive VT needs to be reduced; and

[0313] if the detection electric signal VR is less than the reference signal VS, it is indicated that the light emitting brightness of the transmitter 211-1 needs to be raised a little, and

correspondingly, the numerical value of the electric drive VT needs to be increased.

[0314] The above-mentioned adjustment of the numerical value of the electric drive VT in the

opposite direction actually explains the direction of the adjustment only. For actual adjustment, it

is desired that a specific possible numerical value may be obtained as directly as possible to

determine a reasonable value of the electric drive VT faster. Therefore, some calculation methods

may be used. These calculation methods may be preset in the control system 600. An electric

drive VT is calculated and determined through calculation resources provided by the control

system 600, and the calculated electric drive VT is provided for the transmitter 211-1 through an

output port of the controller.

[0315] There are various methods for specific calculation. A general method is to take the

numerical value groups of the electric drive VT and the corresponding detection electric signal

VR that has been obtained in the foregoing adjustment step that has been executed as known

values to solve a fitting function of these numerical value groups, and then determine, according

to the fitting function, a value of the electric drive VT corresponding to an ideal value of the detection electric signal VR. By the use of the above-mentioned function fitting method, the required value of the electric drive VT may be obtained more quickly. In the specific process of function fitting, a linear function is generally used for fitting. In a special case, other functions may also be considered for fitting. For example, a work characteristic curve of the sensor is a quadratic function, and a quadratic function may be considered for fitting. A linear function fitting manner is taken as an example for explanation of the specific process.

[0316] Referring to FIG. 20, a flow diagram of the above-mentioned specific manner for adjusting an electric drive VT with function fitting is illustrated. S350 that "he numerical value

of the electric drive VT is adjusted in an opposite direction according to a comparison result of

the numerical value of the detection electric signal VR and the numerical value of the reference

signal VS, and the step that the detection electric signal VR output by the receiver 211-2 of the

dust detection sensor is received is re-executed" specifically includes the following steps:

[0317] at S351: the numerical value of the electric drive VT used for the latest round of

adjustment and the obtained corresponding numerical value of the detection electric signal VR

output by the receiver 211-2 form a group of data used as current data;

[0318] at S352: if the numerical value of the detection electric signal VR is less than the numerical value of the preset reference signal VS, a linear relationship between the drive voltage

and the detection electric signal VR is re-built according to the current data and a group of data

that is obtained in the previous adjustment step, is greater than the preset reference signal VS and

is closest to the reference signal VS; and if the numerical value of the detection electric signal

VR is greater than the numerical value of the preset reference signal VS, a linear relationship

between the drive voltage and the detection electric signal VR is re-built according to the current

data and a group of data that is obtained in the previous adjustment step, is less than the preset

reference signal VS and is closest to the reference signal VS;

[0319] at S353: the numerical value of the drive voltage VT corresponding to the reference

signal VS is re-obtained according to the re-built linear relationship between the drive voltage

and the detection signal VR;

[0320] at S354: the re-obtained numerical value of the drive voltage VT corresponding to the

reference signal VS is used as the numerical value of the electric drive VT in the step that the

electric drive VT with the determined numerical value is provided for the transmitter 211-1 of the dust detection sensor, and subsequent steps are executed; and

[0321] at S355: the above-mentioned steps are repeated till a satisfactory drive voltage VT is obtained, that is, if the determination result of S330 is positive, S340 is executed.

[0322] Referring to FIG. 21, a flow diagram of determining an electric drive VT provided by the present disclosure is illustrated. The method for determining the electric drive VT has the

characteristic that an upper limit value and a lower limit value of the electric drive VT of the

sensor are used, and the upper limit value and the lower limit value may be obtained according to

factory parameters of the sensor.

[0323] Specifically, before S310, i.e., under the calibration working environment, before the electric drive VT with the determined numerical value is provided for the transmitter 211-1 of

the dust detection sensor, the following steps are included:

[0324] At SO-301: voltage values of detection electric signals VR that respectively correspond to the upper limit voltage value and the lower limit voltage value of a drive voltage within a

drive voltage range and are output by the receiver 211-2 are obtained, wherein the voltage value

of the detection electric signal VR corresponding to the upper limit voltage value and the voltage

value of the detection electric signal VR corresponding to the lower limit voltage value and

output by the receiver 211-2 may be obtained through experimental measurement.

[0325] At SO-302: a functional relationship between the drive voltage and the detection electric signal VR is built according to two groups of data (the upper limit voltage value and the voltage

value of the detection electric signal VR corresponding to the upper limit voltage value and

output by the receiver 211-2) and (the lower limit voltage value and the voltage value of the

detection electric signal VR corresponding to the lower limit voltage value and output by the

receiver 211-2), wherein the functional relationship is a linear relationship if a linear function is

used.

[0326] At SO-303: a numerical value of the drive voltage VT corresponding to the reference

signal VS is obtained according to the functional relationship between the drive voltage and the

detection electric signal VR.

[0327] At SO-304: the numerical value of the drive voltage VT corresponding to the reference

signal VS is used as the numerical value of the electric drive VT in the step that the electric drive

VT with the determined numerical value is provided for the transmitter 211-1 of the dust detection sensor, and subsequent steps are executed.

[0328] The following table now shows the data:

[0329] The voltage value of the reference signal VS is 1.4 V.

Voltage upper Voltage lower

limit limit Drive voltage VT 2V 0.8 V

Detection electric 1.8 V 1.2 V

signal VR

[0330] The linear relationship is: VT=2VR-1.6; 1.4 V is substituted into the linear relationship: VT=2*1.4-1.6=1.2 V, thus obtaining the drive voltage VT being 1.2 V; and the drive voltage of

1.2 V is used as the electric drive VT with the determined numerical value.

[0331] When the detection electric signal is obtained, the actually obtained signal is a signal including a process of change, so that a proper value timing for acquiring the detection electric

signal needs to be determined. Generally, two manners may be used:

[0332] after a voltage signal output by the output end of the receiver 211-2 is stabilized, a

numerical value of an obtained analog voltage signal is used as the detection electric signal

output by the receiver 211-2; and

[0333] the other optional manner is that after the digital square wave signal used for

characterizing the dust state remains zero for a specified length of time interval, the obtained

numerical value of the voltage value of the detection electric signal VR is used as the detection

electric signal output by the receiver 211-2. The essence of the method is to use the dust state

detection signal to show that the detection electric signal has been in a stabilized state.

[0334] Referring to FIG. 22, another flow diagram of determining an electric drive VT provided

by the present disclosure is illustrated.

[0335] In an off-working state, before the electric drive VT with the determined numerical

value is provided for the transmitter 211-1 of the dust detection sensor, the following steps are

included:

[0336] at S1-301: a voltage value of a first detection electric signal VR corresponding to a first

drive voltage value and output by the receiver 211-2 is obtained, wherein the first drive voltage

value is any predicted value within a drive voltage range;

[0337] at S1-302: a voltage value of a second detection electric signal VR corresponding to a second drive voltage value and output by the receiver 211-2 is obtained, wherein the second

drive voltage value is a value different from the first drive voltage value within the drive voltage

range;

[0338] at S1-303: a linear relationship between the drive voltage and the detection electric signal VR is built according to two groups of data (the first drive voltage value and the voltage

value of the first detection electric signal VR) and (the second drive voltage value and the

voltage value of the second detection electric signal VR);

[0339] at S1-304: the numerical value of the drive voltage VT corresponding to the reference signal VS is obtained according to the linear relationship between the drive voltage and the

detection electric signal VR; and

[0340] at S1-305: the numerical value of the drive voltage VT corresponding to the reference

VT with the determined numerical value is provided for the transmitter 211-1 of the dust

detection sensor, and subsequent steps are executed.

[0341] In addition to the above-mentioned solution, the data obtained in each round of adjustment may also be used to obtain a more accurate fitting function. At this time, the fitting

function may not be linear or only approximately linear. A variety of possible processing

procedures are provided in the prior art, so that the specific processing manner is not described in

detail here. Roughly speaking, the procedures are as follows:

[0342] the numerical value of the electric drive VT used in this round of adjustment and the

obtained corresponding numerical value of the detection electric signal VR output by the

receiver form a group of data, and this group of data is added into the data obtained in all the

previous rounds of adjustment and the initial data to form current sample data;

[0343] the functional relationship between the driving voltage VT and the detection electric

signal VR is re-built according to the current sample data;

[0344] a calculated value of the drive voltage VT corresponding to the reference signal VS is

re-obtained according to the re-built linear functional relationship between the drive voltage and

the detection signal VR;

[0345] the re-obtained calculated value of the drive voltage VT corresponding to the reference signal VS is used as the numerical value of the electric drive VT in the step that the electric drive

VT with the determined numerical value is provided for the transmitter of the dust detection

sensor, and subsequent steps are executed; and

[0346] the above steps are repeated till a satisfactory drive voltage VT is obtained.

[0347] Using the above-mentioned method for improving the accuracy of the dust detection sensor may effectively ensure that the dust detection sensor works at an appropriate position of

its work curve, thereby effectively improving the work accuracy of the dust detection sensor.

[0348] The various improvement measures for the vacuum cleaner provided by the embodiments of the present disclosure may effectively improve the work condition of the

vacuum cleaner and improve the use experience.

[0349] The apparatus embodiments described above are merely illustrative, where the units

described as separate components may or may not be physically separated, and the components

displayed as units may or may not be physical units, i.e., may be located at a place, or may be

distributed to multiple network units. Some or all of the modules may be selected according to

actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in

the art can understand and implement without creative work.

[0350] Through the description of the above implementation modes, those skilled in the art can clearly understand that various implementation modes may be implemented by means of

software and a necessary general hardware platform, and of course, by hardware. Based on such

understanding, the essence of the foregoing technical solutions or portions making contribution

to the prior art may be embodied in the form of software products. The computer software

products may be stored in a computer-readable storage medium such as a ROM/RAM, a

magnetic disk and an optical disc, including instructions for causing a computer device (which

may be a personal computer, a server, or a network device, etc.) to perform the methods

described in various embodiments or portions of the embodiments.

[0351] Finally, it should be noted that the above embodiments are only used to illustrate the

technical solutions of the present disclosure, and are not limited thereto. Although the present

disclosure has been described in detail with reference to the foregoing embodiments, those of

ordinary skill in the art will understand that the technical solutions described in the foregoing

embodiments can be still modified, or some technical features are equivalently replaced. These modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions in various embodiments of the present disclosure.

[00352] The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common

general knowledge.

[00353] It will be understood that the terms "comprise" and "include" and any of their

derivatives (e.g. comprises, comprising, includes, including) as used in this specification, and

the claims that follow, is to be taken to be inclusive of features to which the term refers, and is

not meant to exclude the presence of any additional features unless otherwise stated or implied.

Claims

1. A cleaning device, comprising:

a main body, comprising a suction unit generating a suction air flow, used for collecting

an object to be cleaned up through the suction air flow;

an interaction element, arranged on the main body and exposed outside, and used for

generating, in response to an interaction event triggered by a user, a first signal based on an

interaction gesture sensed in the interaction event; wherein the interaction element comprises: a

touch sensing member, comprising sensing units, and an independent key; and wherein the

sensing units perform manual power adjustment on the vacuum cleaner, and the independent key

performs automatic power adjustment on the vacuum cleaner; and

a second controller, arranged in the main body and coupled with the interaction element,

and used for acquiring the first signal and sending, according to the first signal, a second signal

to the suction unit, such that the suction unit works according to the second signal.

2. The cleaning device according to claim 1, wherein the touch sensing member, arranged

on a surface of a shell of the main body, and used for generating a touch sensing electric signal

in response to a touch operation;

and wherein the interaction element further comprises:

a second converter, coupled with the touch sensing member, and used for converting the

touch sensing electric signal into a power indication signal or a rotation speed indication signal

that can be identified by the second controller.

3. The cleaning device according to claim 2, wherein the touch sensing member

comprises:

at least two sensing units; and

a touch circuit, used for generating a touch sensing electric signal when a touch operation

exists on one of the at least two sensing units;

wherein the at least two sensing units are continuously disposed in sequence along one

direction.

4. The cleaning device according to claim 3, wherein the touch circuit is further used for:

generating a first sensing touch signal and a second sensing touch signal when a touch

operation from a first sensing unit in the at least two sensing units to a second sensing unit in the

at least two sensing units exists; wherein the first sensing signal and the second sensing signal

are in chronological order and change proportionally.

5. The cleaning device according to claim 3, wherein the touch sensing member

comprises: a head sensing unit, at least one middle sensing unit and a tail sensing unit; wherein,

the head sensing unit is electrically coupled with the tail sensing unit to enable the two

sensing units to belong to the same key unit.

6. The cleaning device according to any one of claims 3 to 5, wherein adjacent edges of

two adjacent sensing units are of a sawtooth shape or a wave type for embedded connection.

7. The cleaning device according to any one of claims 1-5, wherein the parameter

information comprises at least one of:

power or rotation speed information of the suction unit, capacity information of a power

supply battery of the cleaning device, communication information of a communication unit of

the cleaning device, fault information of the cleaning device, and information related to the

object to be cleaned up.

8. The cleaning device according to any one of claims 1-5, wherein the interaction

element comprises:

a display unit, providing corresponding display information to the outside; and

wherein the display information is displayed according to a set pattern, wherein the set

pattern comprises at least one of a geometric pattern and a character pattern.

9. The cleaning device according to claim 8, wherein,

the set pattern comprises a circular pattern, and the display information is displayed with

two colors being alternately arranged; or the set pattern comprises at least two turns of circular patterns with a continuously increasing diameter from inside to outside, and the display information is displayed with colors of two adjacent turns of circular patterns being different.

10. A control method of cleaning device, comprising:

generating, in response to an interaction event triggered by a user through an interaction

element, a first signal based on an interaction gesture sensed in the interaction event, wherein the

interaction element is arranged on the cleaning device and exposed outside; the interaction

element comprises: a touch sensing member, comprising sensing units, and an independent key,

the sensing units perform manual power adjustment on the vacuum cleaner, and the independent

key performs automatic power adjustment on the vacuum cleaner; and

sending, according to the first signal, a second signal to a suction unit of the cleaning

device such that the suction unit works according to the second signal.

11. The method according to claim 10, wherein the interaction element comprises at least

two sensing units being continuously disposed in sequence along one direction, and

the generating the first signal based on the interaction gesture sensed in the interaction

event comprises:

when the interaction gesture is a sliding gesture of moving from a first sensing unit in the

at least two sensing units to a second sensing unit in the at least two sensing units along the

direction, acquiring a first sensing touch signal and a second sensing touch signal generated in a

process of touching from the first sensing unit to the second sensing unit, wherein the first

sensing touch signal and the second sensing touch signal are in chronological order and change

proportionally; and

generating, based on the sensing touch signal and the second sensing touch signal, a first

sub-signal of the first signal and a second sub-signal of the first signal, wherein the first

sub-signal of the first signal and the second sub-signal of the first signal are in chronological

order and change proportionally.

12. The method according to claim 11, wherein the sending, according to the first signal,

a second signal to a suction unit of the cleaning device such that the suction unit works according

to the second signal comprises:

sending, according to the first sub-signal of the first signal and the second sub-signal of

the first signal, a first sub-signal of the second signal corresponding to the first sub-signal of the

first signal and a second sub-signal of the second signal corresponding to the second sub-signal

of the second signal to the suction unit of the cleaning device in sequence in chronological order

such that the suction unit works as the time varies in sequence according to the first sub-signal of

the second signal and the second sub-signal of the second signal.

13. The method according to claim 10, wherein the interaction element comprises at least

event comprises:

when the interaction gesture is a sliding gesture of moving from one of the at least two

sensing units to the other sensing unit along the direction, determining a sliding direction of the

sliding gesture based on a touch sensing signal sensed by the interaction element;

determining a power or rotation speed adjustment solution for the suction unit based on

the sliding direction; and

generating the first signal according to the power or rotation speed adjustment solution.

14. The method according to claim 13, wherein when the interaction gesture is a sliding

gesture of moving from one of the at least two sensing units to the other sensing unit along the

direction, determining a sliding direction of the sliding gesture based on a touch sensing signal

sensed by the interaction element comprises:

when the interaction gesture is the sliding gesture of moving from one of the at least two

sensing units to the other sensing unit along the direction, acquiring, based on the touch sensing

signal sensed by the interaction element, the sensing unit that is touched in the sliding gesture;

and determining the sliding direction of the sliding gesture according to a preset sensing unit arrangement order.

15. The method according to claim 14, wherein the determining a power or rotation speed adjustment solution for the suction unit based on the sliding direction comprises: determining a power or rotation speed adjustment trend for the suction unit according to the sliding direction; determining an adjustment amount according to the sensing unit that is touched in the sliding gesture; and making the power or rotation speed adjustment solution for the suction unit according to the power or rotation speed adjustment trend and the adjustment amount.

16. The method according to any one of claims 10 to 15, further comprising: acquiring parameter information generated in a working process of the cleaning device; and controlling, according to the parameter information, the interaction element to provide corresponding output information to an outside.

17. The method according to claim 16, wherein the parameter information comprises: a dust concentration detected by a sensor in the working process of the cleaning device; and the interaction element comprises a display unit; the display unit comprises a plurality of light emitting devices; and the controlling, according to the parameter information, the interaction element to provide corresponding output information to an outside comprises: when the dust concentration is less than or equal to a lowest threshold, turning on all the light emitting devices in a first color; when the dust concentration is greater than or equal to a highest threshold, turning off all the light emitting devices in the first color; and when the dust concentration is between the lowest threshold and the highest threshold, turning on a corresponding number of light emitting devices in the first color proportionally according to a numerical value of the dust concentration.

18. The method according to claim 17, wherein the controlling, according to the parameter information, the interaction element to provide corresponding output information to an outside further comprises: when the dust concentration is less than or equal to the lowest threshold, turning off all the light emitting devices in a second color; when the dust concentration is greater than or equal to the highest threshold, turning on all the light emitting devices in the second color; and when the dust concentration is between the lowest threshold and the highest threshold, turning on partial light emitting devices in the second color according to a numerical value of the dust concentration.

19. The method according to claim 18, wherein the plurality of light emitting devices are disposed in a circle according to a circular ring, and when the dust concentration is between the lowest threshold and the highest threshold, turning on a corresponding number of light emitting devices in the first color proportionally according to a numerical value of the dust concentration and turning on partial light emitting devices in the second color comprises: when the dust concentration is between the lowest threshold and the highest threshold, determining a first radian according to the numerical value of the dust concentration; and turning on, from a set start point of the circular ring, the light emitting devices in the second color within a first radian range, and the light emitting devices in the first color within a second radian range; wherein the second radian is at least one portion of the remaining radian in the circular ring except the first radian.

20. The method according to claim 19, wherein the turning on, from a set start point of

the circular ring, the light emitting devices in the second color within the first radian range and

the light emitting devices in the first color within the second radian range comprises:

turning on, from the set start point of the circular ring, the light emitting devices in the

second color within the first radian range;

turning on the light emitting devices in the first color within the second radian range,

wherein a third radian exits between the first radian and the second radian; and

simultaneously turning on the light emitting devices in the first color and the light

emitting devices in the second color within the third radian range to realize overlapping display

of the two colors to show a color gradient effect.