CN111374620A - Dish washer and control method thereof - Google Patents
Dish washer and control method thereof Download PDFInfo
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- CN111374620A CN111374620A CN201811633292.7A CN201811633292A CN111374620A CN 111374620 A CN111374620 A CN 111374620A CN 201811633292 A CN201811633292 A CN 201811633292A CN 111374620 A CN111374620 A CN 111374620A
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- dishwasher
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- display screen
- distance
- controlling
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4293—Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels
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Abstract
The present invention provides a dishwasher and a control method thereof, wherein the dishwasher includes: a distance detecting device for detecting a distance between an object and the dishwasher; the display panel comprises a microcontroller and a display screen, the microcontroller is connected with the distance detection device and communicates through a first communication protocol, and the microcontroller is used for carrying out screen lightening or screen extinguishing control on the display screen according to the distance; and the main control board is connected with the display screen and is communicated through a second communication protocol, and the main control board is used for controlling the dish washing machine according to the display state of the display screen. The dishwasher saves the key cost, has the advantage of long service life, is more intelligent in application scene, and improves the use experience of users.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a dish washing machine and a control method of the dish washing machine.
Background
With the rapid development of science and technology, people have more and more demands on the use of household appliances such as dishwashers. The power switch of the traditional dishwasher is controlled by pressing a key or touching the power switch, namely, the dishwasher can start to work only by manual operation, so the technology shortens the mechanical service life of the dishwasher, and lacks intelligent control, so that the user experience is not high-grade.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide the dish washing machine, the dish washing machine saves the key cost, has the advantage of long service life, is more intelligent in application scene, and improves the use experience of users.
Another object of the present invention is to provide a control method of a dishwasher.
To achieve the above object, an embodiment of a first aspect of the present invention provides a dishwasher, including: a distance detecting device for detecting a distance between an object and the dishwasher; the display panel comprises a microcontroller and a display screen, the microcontroller is connected with the distance detection device and communicates through a first communication protocol, and the microcontroller is used for carrying out screen lightening or screen extinguishing control on the display screen according to the distance; the main control board is connected with the display screen and communicates through a second communication protocol, and the main control board is used for controlling the dish washing machine according to the display state of the display screen.
According to the dishwasher provided by the embodiment of the invention, the distance between an object and the dishwasher is detected by the distance detection device, the microcontroller controls the screen on or off of the display screen according to the detected distance, and the main control board controls the dishwasher according to the state of the display screen, so that the dishwasher saves the key cost, has the advantage of long service life, is more intelligent in application scene, and improves the use experience of users.
In addition, the dishwasher according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the invention, the first communication protocol is an I2C protocol, and the second communication protocol is a UART protocol.
According to an embodiment of the present invention, the distance detection apparatus includes: an infrared transmitter for transmitting an infrared signal; the infrared receiver is respectively connected with the infrared transmitter and the display panel, and is used for converting the infrared signal into a PS value when receiving the infrared signal and sending the PS value to the microcontroller through an I2C bus; the power supply unit is connected with the infrared receiver and used for supplying power to the infrared receiver;
according to one embodiment of the invention, the microcontroller is configured to: when the PS value is smaller than a first distance threshold value, controlling the display screen to be lightened to display a user interface; when the PS value is greater than or equal to the first distance threshold and less than a second distance threshold, controlling the display screen to keep the current display state; when the PS value is larger than or equal to the second distance threshold value, controlling the display screen to be turned off; wherein, the main control board is used for controlling the dishwasher in at least one of the following ways when the display screen is bright: and controlling the dishwasher to recover the key monitoring function, controlling the display screen to display a user interface and controlling the dishwasher to start the voice control function.
According to one embodiment of the present invention, the power supply unit includes: the source electrode of the first switch tube is connected with a first preset power supply, wherein the first switch tube is conducted when the dishwasher is in standby; one end of the first capacitor is connected with the drain electrode of the first switching tube and forms a first node, and the other end of the first capacitor is grounded; a first inductor, one end of the first inductor being connected to the first node; one end of the second capacitor is connected with the other end of the first inductor and forms a second node, and the other end of the second capacitor is grounded; the voltage stabilizer is provided with an IN pin, a GND pin and an OUT pin, the IN pin is connected with the second node, the GND pin is grounded, and the OUT pin is connected with a power supply end of the infrared receiver; one end of the third capacitor is connected with the OUT pin, and the other end of the third capacitor is grounded; and one end of the fourth capacitor is connected with the OUT pin, and the other end of the fourth capacitor is grounded.
According to one embodiment of the invention, the infrared transmitter comprises a photodiode, wherein the infrared receiver comprises: the proximity sensor is provided with a VDD pin, an AGND pin, a LEDGND pin, a SEL pin, a SDA pin, a SCL pin, an INT pin and a LDR pin, wherein the VDD pin is connected with the OUT pin, the AGND pin, the LEDGND pin and the SEL pin are all grounded, the SDA pin is connected with the OUT pin through a first resistor, the SCL pin is connected with the OUT pin through a second resistor, the INT pin is connected with the OUT pin through a third resistor, the SDA pin is connected with the microcontroller through one of I2C buses, and the SCL pin is connected with the microcontroller through the other one of the I2C buses; one end of the fifth capacitor is connected with the OUT pin, and the other end of the fifth capacitor is grounded; one end of the sixth capacitor is connected with the OUT pin, and the other end of the sixth capacitor is grounded; and the grid electrode of the second switching tube is connected with the LDR pin, the source electrode of the second switching tube is connected with the first node, the drain electrode of the second switching tube is connected with the anode of the photodiode, and the cathode of the photodiode is grounded.
According to an embodiment of the invention, the infrared receiver further comprises: and one end of the fourth resistor is connected with the drain electrode of the second switching tube, and the other end of the fourth resistor is connected with the anode of the photodiode.
According to an embodiment of the invention, the infrared receiver further comprises: one end of the fifth resistor is connected with a second preset power supply; one end of the sixth resistor is connected with the second preset power supply; a gate of the third switching tube is connected with the OUT pin, a source of the third switching tube is connected with the SDA pin, a drain of the third switching tube is connected with the other end of the fifth resistor, and forms a third node, and the third node is connected with the microcontroller through one of the I2C buses; a gate of the fourth switching tube is connected to the OUT pin, a source of the fourth switching tube is connected to the SCL pin, a drain of the fourth switching tube is connected to the other end of the sixth resistor to form a fourth node, and the fourth node is connected to the microcontroller through another one of the I2C buses.
According to one embodiment of the invention, a groove is arranged on the front side of the cavity of the dishwasher, and an isolation retaining wall is arranged in the groove, and the isolation retaining wall separates the groove into two spaces, namely a first space and a second space, wherein the infrared emitter is fixed in the first space, and the infrared receiver is fixed in the second space.
According to one embodiment of the present invention, black rubber is coated on both the side walls of the first space and the side walls of the second space.
According to one embodiment of the invention, the grooves are covered with a TP film having a thickness of 3 mm.
According to one embodiment of the present invention, the infrared signal transmitting center of the infrared transmitter and the infrared signal receiving center of the infrared receiver are disposed on the same straight line parallel or perpendicular to one side of the display screen.
According to one embodiment of the present invention, the infrared receiver is provided with a receiving hole having a diameter set according to a receiving angle of the infrared signal, wherein the receiving angle of the infrared signal is greater than 50 °.
To achieve the above object, a second aspect of the present invention provides a control method of a dishwasher, the control method comprising the steps of: detecting a distance between the object and the dishwasher; confirming that the distance is smaller than a first distance threshold value, and controlling the display screen to be lightened; confirming that the distance is larger than the first distance threshold and smaller than a second distance threshold, and controlling the display screen to keep the current display state; and confirming that the distance is greater than the second distance threshold value, and controlling the display screen to be turned off.
According to the control method of the dishwasher, the distance between the object and the dishwasher is detected firstly, and then the state of the display screen is controlled according to the detected distance.
In addition, the control method of the dishwasher according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, a control method of a dishwasher further includes: confirming the display screen is bright, and performing at least one of the following controls on the dish washing machine: and controlling the dishwasher to recover the key monitoring function, controlling the display screen to display a user interface and controlling the dishwasher to start the voice control function.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a block diagram of a dishwasher according to an embodiment of the present invention;
FIG. 2 is a block diagram of a dishwasher according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a distance detection apparatus according to an example of the present invention;
FIG. 4 is a schematic illustration of an installation of an infrared transmitter and an infrared receiver according to one example of the invention;
FIG. 5 is a graph of noise-AD values according to one example of the invention;
FIG. 6 is a schematic illustration of the distance of an object from a dishwasher according to one example of the present invention;
fig. 7 is a flowchart of a control method of a dishwasher according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A dishwasher and a control method thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a block diagram of a dishwasher according to an embodiment of the present invention.
As shown in fig. 1, a dishwasher 100 according to an embodiment of the present invention includes: a distance detecting device 10, a display panel 20, and a main control panel 30.
Wherein the distance detecting device 10 is used for detecting the distance between the object and the dishwasher 100; the display panel 20 comprises a microcontroller 21 and a display screen 22, the microcontroller 21 is connected with the distance detection device 10 and communicates through a first communication protocol, and the microcontroller 21 is used for controlling the display screen 22 to be turned on or off according to the distance; the main control board 30 is connected to the display screen 22 and communicates through a second communication protocol, and the main control board 30 is used for controlling the dishwasher 100 according to the display state of the display screen 22.
In this embodiment, the first communication protocol is an I2C (Integrated Circuit bus) protocol, and the second communication protocol is a UART (Universal Asynchronous Receiver/Transmitter) protocol.
It will be appreciated that the I2C bus requires only two lines: the SDA and the SCL have the advantages of few interface lines, simple control mode, small device packaging form, high communication speed, low cost, high reliability and the like, only one device on the I2C bus is configured as a master device, the other devices can only be used as slave devices, and the master device can search for the required slave devices according to addresses, namely, a mode of one driving more. Therefore, when the microcontroller 21 communicates with the distance detection device 10 through the I2C protocol, the microcontroller 21 may be a master device, the distance detection device 10 may be a slave device, and subsequently, more slave devices, such as sensors, may be added as needed.
According to the dishwasher provided by the embodiment of the invention, the distance between an object and the dishwasher is detected by the distance detection device, the microcontroller controls the screen on or off of the display screen according to the detected distance, and the main control board controls the dishwasher according to the state of the display screen, so that the dishwasher saves the key cost, has the advantage of long service life, is more intelligent in application scene, and improves the use experience of users.
In one embodiment of the present invention, as shown in fig. 2, the distance detecting device 10 includes: an infrared transmitter 11, an infrared receiver 12 and a power supply unit 13.
The infrared emitter 11 is used for emitting an infrared signal; the infrared receiver 12 is respectively connected with the infrared emitter 11 and the display panel 20, and the infrared receiver 12 is used for converting the infrared signal into a PS value (with the size ranging from 0 to 2047) when receiving the infrared signal and sending the PS value to the microcontroller 21 through an I2C bus; the power supply unit 13 is connected to the infrared receiver 12, and is configured to supply power to the infrared receiver 12.
Further, the controller 21 may be configured to: controlling the display screen 22 to light up to display the user interface when the PS value is less than the first distance threshold; when the PS value is greater than or equal to the first distance threshold and less than the second distance threshold, controlling the display screen 22 to maintain the current display state; and controlling the display screen 22 to turn off when the PS value is greater than or equal to the second distance threshold. The main control board 30 is used for controlling the dishwasher 100 when the display screen 22 is bright, and the main control board is used for controlling at least one of the following: control the dishwasher 100 to resume the key monitoring function, control the display screen 22 to display a user interface, control the dishwasher 100 to turn on the voice control function.
In one example of the present invention, as shown in fig. 3, the power supply unit 13 may include: the circuit comprises a first switching tube Q1, a first capacitor C1, a first inductor L1, a second capacitor C2, a voltage stabilizer TS, a third capacitor C3 and a fourth capacitor C4.
The source S of the first switch Q1 is connected to a first preset power supply, and when the dishwasher 100 is in standby, the first switch Q1 is turned on; one end of the first capacitor C1 is connected to the drain D of the first switch Q1 and forms a first node a, and the other end of the first capacitor C1 is grounded to GND; one end of the first inductor L1 is connected to the first node a; one end of the second capacitor C2 is connected to the other end of the first inductor L1 and forms a second node b, and the other end of the second capacitor C2 is grounded to GND; the voltage stabilizer TS has an IN pin, a GND pin, and an OUT pin, the IN pin is connected to the second node b, the GND pin is grounded, and the OUT pin is connected to the power supply terminal of the infrared receiver 12; one end of a third capacitor C3 is connected with the OUT pin, and the other end of the third capacitor C3 is grounded GND; one end of the fourth capacitor C4 is connected to the OUT pin, and the other end of the fourth capacitor C4 is grounded to GND.
In this example, referring to fig. 3, the power supply unit 13 may further include a seventh resistor R7. Specifically, the source S of the first switch Q1 is connected to the first predetermined power source, and may form a fifth node e, and the seventh resistor R7 may be connected between the fifth node e and the gate G of the first switch Q1.
The voltage of the first preset power supply can be 5V, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 can be patch capacitors of 0805 type, capacitance values of the patch capacitors can be 1uF, 10uF and 0.1uF respectively, an inductance value of the first inductor L1 can be 6.8uH, and the type of the voltage regulator TS can be LM1117 IMPX-3.3.
Specifically, the power supply unit 13 converts the first preset power supply 5V into 3.3V, that is, the OUT pin of the voltage stabilizer TS outputs 3.3V, and supplies the 3.3V to the infrared receiver 12 to supply power to the infrared receiver 12.
In one example, referring to fig. 3, the infrared transmitter 11 may include a photodiode VD, wherein the infrared receiver 12 may include: the proximity sensor 121, the fifth capacitor C5, the sixth capacitor C6 and the second switch tube Q2.
The proximity sensor 121 is provided with a VDD pin, an AGND pin, a ledgd pin, a SEL pin, an SDA pin, an SCL pin, an INT pin and an LDR pin, the VDD pin is connected to the OUT pin, the AGND pin, the ledgd pin and the SEL pin are all grounded to GND, the SDA pin is connected to the OUT pin through a first resistor R1, the SCL pin is connected to the OUT pin through a second resistor R2, the INT pin is connected to the OUT pin through a third resistor R3, the SDA pin is connected to the microcontroller 21 through one of I2C buses, and the SCL pin is connected to the microcontroller 21 through the other one of I2C buses; one end of a fifth capacitor C5 is connected with the OUT pin, and the other end of the fifth capacitor C5 is grounded GND; one end of a sixth capacitor C6 is connected with the OUT pin, and the other end of the sixth capacitor C6 is grounded GND; the grid of the second switch tube Q2 is connected to the LDR pin, the source S of the second switch tube Q2 is connected to the first node a, the drain D of the second switch tube Q2 is connected to the anode of the photodiode VD, and the cathode of the photodiode VD is grounded to GND.
In this example, referring to fig. 3, the photodiode VD may be of the LTE-C249 type, the proximity sensor 121 may be of the LTR-507ALS type, and the infrared receiver 12 may further include an eighth resistor R8. Specifically, the gate G of the second switch Q2 is connected to the LDR pin to form a sixth node f, and the eighth resistor R8 is connected between the sixth node f and the first node a.
The fifth capacitor C5 and the sixth capacitor C6 may be patch capacitors of type 0402, and the capacitance values may be 0.1uF and 4.7uF, respectively.
Further, referring to fig. 3, the infrared receiver 12 may further include a fourth resistor R4, one end of the fourth resistor R4 is connected to the drain D of the second switch Q2, and the other end of the fourth resistor R4 is connected to the anode of the photodiode VD.
In one example, referring to fig. 3, the infrared receiver 12 may further include: a fifth resistor R5, a sixth resistor R6, a third switch tube Q3 and a fourth switch tube Q4.
One end of the fifth resistor R5 is connected with a second preset power supply; one end of the sixth resistor R6 is connected with a second preset power supply; a gate G of the third switching tube Q3 is connected to an OUT pin, a source S of the third switching tube Q3 is connected to an SDA pin, a drain D of the third switching tube Q3 is connected to the other end of the fifth resistor R5 and forms a third node c, and the third node c is connected to the microcontroller 21 through one of the I2C buses; the gate G of the fourth switching tube Q4 is connected to the OUT pin, the source S of the fourth switching tube Q4 is connected to the SCL pin, the drain D of the fourth switching tube Q4 is connected to the other end of the sixth resistor R6 and forms a fourth node D, and the fourth node D is connected to the microcontroller 21 through another one of the I2C buses.
In this example, referring to fig. 3, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, and the eighth resistor R8 may each be a chip resistor of type 0402, where the first resistor R1 and the second resistor R2 are pull-up resistors, the first resistor R1, the second resistor R2, the third resistor R3, the fifth resistor R5, and the sixth resistor R6 may each have a resistance value of 10K, the fourth resistor R4 is a current-limiting resistor, and may have a resistance value of 4.2K, the eighth resistor R8 may have a resistance value of 2K, and the voltage of the second preset power supply may be 5V.
In the above example of the present invention, referring to fig. 3, the first switching tube Q1-the fourth switching tube Q4 may be MOS tubes, wherein the first switching tube Q1 and the second switching tube Q2 may be of the type DMP2305U, and the third switching tube Q3 and the fourth switching tube Q4 may be of the type 2N7002LT 1.
In one example of the present invention, as shown in fig. 4, the front side of the cavity of the dishwasher 100 may be provided with a groove, and a separation wall is provided in the groove, and the separation wall separates the groove into two spaces, which are respectively referred to as a first space 101 and a second space 102, wherein the infrared transmitter 11 is fixed in the first space 101 and the infrared receiver 12 is fixed in the second space 102.
Black rubber can be coated on the side wall of the first space 101 and the side wall of the second space 102; the groove can be covered with a TP film, and the thickness of the TP film is 3 mm.
Alternatively, the transmittance of the TP film may be greater than 80%, whereby the TP film has a waterproof effect.
In one example, the infrared signal transmission center M1 of the infrared transmitter 11 and the infrared signal reception center M2 of the infrared receiver 12 are disposed on the same straight line parallel or perpendicular to one side of the display screen 22.
In this example, the closest intersection point of the infrared signal emitted by the infrared emitter 11 and the infrared signal received by the infrared receiver 12 needs to be inside the TP film.
Further, the infrared receiver 12 is provided with a receiving hole K having a diameter set according to a receiving angle β of an infrared signal, wherein the receiving angle β of the infrared signal is greater than 50 °.
Specifically, when the dishwasher 100 is in a standby state, the control chip controls the gate G of the first switching tube Q1 to output a low level, and then the first switching tube Q1 is turned on, the voltage regulator TS outputs a 3.3V voltage to supply the 3.3V voltage to the infrared receiver 12, the photodiode VD emits an infrared signal, the proximity sensor 121 receives the infrared signal, and converts the infrared signal into a PS value through the SDA data conversion module, and transmits the PS value to the microcontroller 21 through the I2C bus, the microcontroller 21 determines the PS value, when the PS value is smaller than the first distance threshold, it is determined that an object is close to the dishwasher 100, the microcontroller 21 controls the display screen 22 to be bright to display a user interface, and at least one of the following controls the dishwasher 100 by the main control board 30: controlling the dishwasher 100 to resume the key monitoring function, controlling the display screen 22 to display a user interface, and controlling the dishwasher 100 to start a voice control function; when the PS value is greater than or equal to the first distance threshold and less than the second distance threshold, it is determined that the object is neither close to the dishwasher 100 nor far from the dishwasher 100, and the microcontroller 21 controls the display screen 22 to maintain the current display state; when the PS value is greater than or equal to the second distance threshold, it is determined that the object is far from the dishwasher 100, and the display screen 22 is controlled to be turned off.
The first distance threshold and the second distance threshold may be determined according to the energy fed back by the infrared signal, and the determination method may be as follows: data curves of the corresponding AD values as a function of noise for white, gray and black A4 paper sheets at a distance of from 0 to 100cm from the dishwasher 100 were tested at 30KHz of I2C transmission rate, 64 times gain, 100ms of analog-to-digital conversion time, 127 pulses, 50mA of emitted power, 18% of reflectance of the gray card, respectively, and are shown in FIG. 5. It will be appreciated that data below noise is discarded, and that the above curves may vary depending on the structural installation, typically with noise values below 100.
Referring to fig. 5, it may be defined that an energy AD value fed back from a black sheet of paper 15cm away from the dishwasher is an upper limit (PS _ THRES _ UP) of a PS value, an energy AD value fed back from a white sheet of paper 45cm away from the dishwasher is a lower limit (PS _ THRES _ LOW) of the PS value, and it is determined that an object is approaching the dishwasher 100 when the PS value is less than a first distance threshold; when the PS value is greater than or equal to the second threshold, it is determined that the object is moving away from the dishwasher 100, that is, the first distance threshold may be defined as 15cm, the second distance threshold may be defined as 45cm, as shown in fig. 7, when the object is within 15cm of the dishwasher, it is determined that the object is moving close to the dishwasher 100, the microcontroller 21 controls the display screen 22 to be illuminated, and then the main control board 30 controls the dishwasher 100; when the object is more than 45cm away from the dishwasher, the object is judged to be far away from the dishwasher 100, and the display screen 22 is controlled to be turned off; the dishwasher 100 maintains the current state when the object is between 15-45cm from the dishwasher.
It is understood that the closer an object is to the dishwasher 100, the more infrared signal energy the infrared receiver 12 receives, and the greater the AD value.
In summary, according to the dishwasher provided by the embodiment of the invention, the infrared receiver converts the received infrared signal into the PS value, and transmits the PS value to the microcontroller through the I2C bus, the microcontroller controls the display screen to be on or off according to the PS value, and the main control panel controls the dishwasher according to the state of the display screen, so that the dishwasher saves the key cost, has the advantage of long service life, is more intelligent in application scene, and improves the user experience.
Fig. 7 is a flowchart of a control method of a dishwasher according to an embodiment of the present invention.
As shown in fig. 7, the control method of the dishwasher according to the embodiment of the present invention includes the steps of:
and S1, detecting the distance between the object and the dish washing machine.
And S2, confirming that the distance is smaller than the first distance threshold value, and controlling the display screen to light.
And S3, confirming that the distance is greater than the first distance threshold and less than the second distance threshold, and controlling the display screen to keep the current display state.
And S4, confirming that the distance is larger than the second distance threshold value, and controlling the display screen to be turned off.
In one embodiment of the invention, upon the confirmation display screen being illuminated, the dishwasher is controlled at least one of: the dishwasher is controlled to recover the key monitoring function, the display screen is controlled to display a user interface, and the dishwasher is controlled to start the voice control function.
According to the control method of the dishwasher, the display state of the display screen is controlled according to the distance between the object and the dishwasher, and the dishwasher is controlled according to the requirement when the display screen is bright, so that the key cost can be saved, the service life of the dishwasher is prolonged, the application scene of the dishwasher is more intelligent, and the use experience of a user is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
1. A dishwasher, comprising:
a distance detecting device for detecting a distance between an object and the dishwasher;
the display panel comprises a microcontroller and a display screen, the microcontroller is connected with the distance detection device and communicates through a first communication protocol, and the microcontroller is used for carrying out screen lightening or screen extinguishing control on the display screen according to the distance;
the main control board is connected with the display screen and communicates through a second communication protocol, and the main control board is used for controlling the dish washing machine according to the display state of the display screen.
2. The dishwasher of claim 1, wherein the first communication protocol is an I2C protocol and the second communication protocol is a UART protocol.
3. The dishwasher of claim 2, wherein the distance detecting means comprises:
an infrared transmitter for transmitting an infrared signal;
the infrared receiver is respectively connected with the infrared transmitter and the display panel, and is used for converting the infrared signal into a PS value when receiving the infrared signal and sending the PS value to the microcontroller through an I2C bus;
and the power supply unit is connected with the infrared receiver and used for supplying power to the infrared receiver.
4. The dishwasher of claim 3, wherein the microcontroller is configured to:
when the PS value is smaller than a first distance threshold value, controlling the display screen to be lightened to display a user interface;
when the PS value is greater than or equal to the first distance threshold and less than a second distance threshold, controlling the display screen to keep the current display state;
when the PS value is larger than or equal to the second distance threshold value, controlling the display screen to be turned off;
wherein, the main control board is used for controlling the dishwasher in at least one of the following ways when the display screen is bright:
and controlling the dishwasher to recover the key monitoring function, controlling the display screen to display a user interface and controlling the dishwasher to start the voice control function.
5. The dishwasher of claim 3, wherein the power supply unit comprises:
the source electrode of the first switch tube is connected with a first preset power supply, wherein the first switch tube is conducted when the dishwasher is in standby;
one end of the first capacitor is connected with the drain electrode of the first switching tube and forms a first node, and the other end of the first capacitor is grounded;
a first inductor, one end of the first inductor being connected to the first node;
one end of the second capacitor is connected with the other end of the first inductor and forms a second node, and the other end of the second capacitor is grounded;
the voltage stabilizer is provided with an IN pin, a GND pin and an OUT pin, the IN pin is connected with the second node, the GND pin is grounded, and the OUT pin is connected with a power supply end of the infrared receiver;
one end of the third capacitor is connected with the OUT pin, and the other end of the third capacitor is grounded;
and one end of the fourth capacitor is connected with the OUT pin, and the other end of the fourth capacitor is grounded.
6. The dishwasher of claim 5, wherein the infrared transmitter comprises a photodiode, wherein the infrared receiver comprises:
the proximity sensor is provided with a VDD pin, an AGND pin, a LEDGND pin, a SEL pin, a SDA pin, a SCL pin, an INT pin and a LDR pin, wherein the VDD pin is connected with the OUT pin, the AGND pin, the LEDGND pin and the SEL pin are all grounded, the SDA pin is connected with the OUT pin through a first resistor, the SCL pin is connected with the OUT pin through a second resistor, the INT pin is connected with the OUT pin through a third resistor, the SDA pin is connected with the microcontroller through one of I2C buses, and the SCL pin is connected with the microcontroller through the other one of the I2C buses;
one end of the fifth capacitor is connected with the OUT pin, and the other end of the fifth capacitor is grounded;
one end of the sixth capacitor is connected with the OUT pin, and the other end of the sixth capacitor is grounded;
and the grid electrode of the second switching tube is connected with the LDR pin, the source electrode of the second switching tube is connected with the first node, the drain electrode of the second switching tube is connected with the anode of the photodiode, and the cathode of the photodiode is grounded.
7. The dishwasher of claim 6, the infrared receiver further comprising:
and one end of the fourth resistor is connected with the drain electrode of the second switching tube, and the other end of the fourth resistor is connected with the anode of the photodiode.
8. The dishwasher of claim 6 or 7, wherein the infrared receiver further comprises:
one end of the fifth resistor is connected with a second preset power supply;
one end of the sixth resistor is connected with the second preset power supply;
a gate of the third switching tube is connected with the OUT pin, a source of the third switching tube is connected with the SDA pin, a drain of the third switching tube is connected with the other end of the fifth resistor, and forms a third node, and the third node is connected with the microcontroller through one of the I2C buses;
a gate of the fourth switching tube is connected to the OUT pin, a source of the fourth switching tube is connected to the SCL pin, a drain of the fourth switching tube is connected to the other end of the sixth resistor to form a fourth node, and the fourth node is connected to the microcontroller through another one of the I2C buses.
9. The dishwasher according to claim 3, wherein a recess is formed at a front side of the chamber of the dishwasher, and a separation wall is formed in the recess, and the separation wall separates the recess into two spaces, namely a first space and a second space, wherein the infrared transmitter is fixed in the first space and the infrared receiver is fixed in the second space.
10. The dishwasher of claim 9, wherein a side wall of the first space and a side wall of the second space are coated with black rubber.
11. The dishwasher of claim 9, wherein the recess is covered with a TP film having a thickness of 3 mm.
12. The dishwasher of claim 9, wherein the infrared signal transmitting center of the infrared transmitter and the infrared signal receiving center of the infrared receiver are disposed on the same straight line parallel or perpendicular to one side of the display screen.
13. The dishwasher of claim 9, wherein the infrared receiver is provided with a receiving hole having a diameter set according to a receiving angle of the infrared signal, wherein the receiving angle of the infrared signal is greater than 50 °.
14. A control method of a dishwasher, the dishwasher including a display screen, the control method comprising the steps of:
detecting a distance between the object and the dishwasher;
confirming that the distance is smaller than a first distance threshold value, and controlling the display screen to be lightened;
confirming that the distance is larger than the first distance threshold and smaller than a second distance threshold, and controlling the display screen to keep the current display state;
and confirming that the distance is greater than the second distance threshold value, and controlling the display screen to be turned off.
15. The control method of a dishwasher according to claim 14, further comprising:
confirming the display screen is bright, and performing at least one of the following controls on the dish washing machine:
and controlling the dishwasher to recover the key monitoring function, controlling the display screen to display a user interface and controlling the dishwasher to start the voice control function.
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| CN201811633292.7A CN111374620A (en) | 2018-12-29 | 2018-12-29 | Dish washer and control method thereof |
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| WO2024037384A1 (en) * | 2022-08-15 | 2024-02-22 | 华为技术有限公司 | Display method for electronic device and electronic device |
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