CN113684649B - Method and device for detecting residual quantity of washing liquid, washing machine and storage medium - Google Patents
Method and device for detecting residual quantity of washing liquid, washing machine and storage medium Download PDFInfo
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- CN113684649B CN113684649B CN202010419137.6A CN202010419137A CN113684649B CN 113684649 B CN113684649 B CN 113684649B CN 202010419137 A CN202010419137 A CN 202010419137A CN 113684649 B CN113684649 B CN 113684649B
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- 238000005406 washing Methods 0.000 title claims abstract description 435
- 239000007788 liquid Substances 0.000 title claims abstract description 252
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000006870 function Effects 0.000 description 6
- 239000003599 detergent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/20—Washing liquid condition, e.g. turbidity
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Abstract
The embodiment of the invention discloses a method and a device for detecting the residual quantity of washing liquid, a washing machine and a storage medium. The method comprises the following steps: transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining a time difference between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box; determining a humidity parameter within the wash tank, determining a speed-influencing factor of propagation of the ultrasonic waves within the wash tank based on the humidity parameter; the amount of wash liquid remaining in the wash tank is determined based on the distance of the ultrasonic device from the bottom of the wash tank, the time difference and the speed influencing factor. The scheme of the embodiment of the invention solves the problem of inaccurate detection result caused by residual washing liquid on the inner wall of the washing box, and can accurately detect the residual amount of the washing liquid.
Description
Technical Field
The embodiment of the invention relates to the technical field of washing machines, in particular to a method and a device for detecting the residual quantity of washing liquid, a washing machine and a storage medium.
Background
With the development of the age and the progress of technology, the functions of household appliances such as washing machines and the like are also becoming more and more abundant, for example, the automatic feeding function of washing liquid is being widely studied. In general, the automatic detergent feeding function is realized by storing detergent in advance in a washing box installed in the washing machine, and simultaneously arranging a feeding device, when the detergent is required to be added, the detergent in the washing box is fed into a washing tub through the feeding device to perform washing.
Because the washing liquid box is opaque, the user cannot directly observe the residual amount of the washing liquid; at present, the residual quantity of the washing liquid in the washing box is mainly detected through a liquid level sensor.
However, in the detection method of the prior art, when the washing machine is used for a long time, the residual washing liquid exists on the inner wall of the washing box, and the detection result is inaccurate.
Disclosure of Invention
The embodiment of the invention provides an invention name for accurately detecting the residual quantity of washing liquid in a washing box of a washing machine.
In a first aspect, an embodiment of the present invention provides a method for detecting a remaining amount of a washing liquid, the method being applied to a washing machine, the method including:
transmitting ultrasonic waves into the washing box through an ultrasonic device, and determining a time difference value between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
determining a humidity parameter within the washing box, and determining a speed influence factor of the propagation of ultrasonic waves within the washing box based on the humidity parameter;
and determining the residual quantity of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor.
In a second aspect, an embodiment of the present invention further provides a device for detecting a remaining amount of a washing liquid, the device being applied to a washing machine, the device including:
the time difference determining module is used for transmitting ultrasonic waves into the washing box through the ultrasonic device and determining the time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the received ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
a speed influence factor determining module for determining a humidity parameter within the washing box, determining a speed influence factor of the propagation of the ultrasonic waves within the washing box based on the humidity parameter;
and the washing liquid residual quantity determining module is used for determining the residual quantity of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor.
In a third aspect, an embodiment of the present invention also provides a washing machine including:
one or more processors;
storage means for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement a method for detecting a remaining amount of washing liquid according to any one of the embodiments of the present invention.
In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, wherein the computer-executable instructions, when executed by a computer processor, are configured to perform a method for detecting a remaining amount of a washing liquid according to any of the embodiments of the present invention.
According to the embodiment of the invention, the ultrasonic device transmits ultrasonic waves into the washing box, and the time difference between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves is determined; determining a humidity parameter within the wash tank, determining a speed-influencing factor of propagation of the ultrasonic waves within the wash tank based on the humidity parameter; the residual quantity of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference and the speed influence factor, so that the problem of inaccurate detection result caused by residual washing liquid on the inner wall of the washing box can be solved, and the residual quantity of the washing liquid can be accurately detected.
Drawings
FIG. 1 is a flow chart of a method for detecting the residual amount of a washing liquid according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method for detecting the residual amount of a washing liquid according to a second embodiment of the present invention;
FIG. 3 is a flow chart of a method for detecting the residual amount of a washing liquid in a third embodiment of the present invention;
FIG. 4a is a top view of a washing cartridge and dispensing device to which embodiments of the present invention are applicable;
FIG. 4b is a schematic diagram illustrating an apparatus for detecting the remaining amount of a washing liquid according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a device for detecting the remaining amount of a washing liquid according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural view of a washing machine in a fifth embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not limiting of embodiments of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the embodiments of the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a method for detecting the remaining amount of washing liquid in a washing box according to a first embodiment of the present invention, where the method may be performed by a device for detecting the remaining amount of washing liquid in a washing box, and the device may be implemented in software and/or hardware and integrated into a washing machine or other washing device. Specifically, referring to fig. 1, the method specifically includes the following steps:
and 110, transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining the time difference between the ultrasonic device transmitting ultrasonic waves and receiving reflected signals of the ultrasonic waves.
Wherein the ultrasonic device is installed at the top of the washing box, and the ultrasonic device may include an ultrasonic transmitter and an ultrasonic receiver. Specifically, ultrasonic waves can be transmitted through an ultrasonic transmitter, and reflected signals of the ultrasonic waves can be received through an ultrasonic receiver; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box. The washing liquid in the embodiment of the present invention may be a laundry liquid, or may be a liquid such as a laundry care agent or a laundry softener, which is not limited in the embodiment of the present invention.
The washing box according to the embodiment of the present invention may be installed in a washing machine or a washing apparatus such as a dishwasher, and is not limited thereto.
In a specific example of the embodiment of the present invention, when the ultrasonic device receives a command to detect the remaining amount of the washing liquid, the ultrasonic transmitter is controlled to transmit ultrasonic waves, and after the ultrasonic receiver receives a reflected signal of the ultrasonic waves, a time difference between the ultrasonic transmitter transmitting the ultrasonic signal and the ultrasonic receiver receiving the reflected signal of the ultrasonic waves is determined.
For example, if the time for the ultrasonic transmitter to transmit the ultrasonic wave is t1 and the time for the ultrasonic receiver to receive the reflected signal of the ultrasonic wave is t2, the time difference between the ultrasonic transmitter to transmit the ultrasonic wave and the ultrasonic receiver to receive the reflected signal of the ultrasonic wave is t2-t1.
Step 120, determining a humidity parameter in the washing box, and determining a speed influence factor of ultrasonic wave propagation in the washing box based on the humidity parameter.
The humidity parameter in the washing box is the air humidity in the washing box, and it can be understood that when the washing liquid is not stored in the washing box, the air humidity in the washing box is the external air humidity; when the washing liquid is stored in the washing box and after the washing liquid is stored for a period of time, the washing liquid can volatilize to a certain extent, at the moment, the air humidity in the washing box is obviously higher than the air humidity of the external connection, and meanwhile, the air in the washing box also contains certain washing liquid components.
Alternatively, in the embodiment of the present invention, the humidity parameter in the washing box may be determined by a humidity sensor, wherein the humidity sensor is installed at the top of the washing box.
Specifically, in the embodiment of the invention, the humidity parameter in the washing box can be determined through the humidity sensor arranged at the top of the washing box, and further, the speed influence factor of ultrasonic wave propagation in the washing box is determined according to the humidity parameter. Wherein the speed influencing factor is in a proportional relation with the humidity parameter in the washing box, namely the larger the humidity parameter in the washing box is, the larger the speed influencing factor is; the smaller the humidity parameter within the washing box, the smaller the speed influencing factor. For example, when the humidity parameter is 30%, the speed influencing factor may be 1; when the humidity parameter is 60%, the speed influencing factor may be 1.3. It should be noted that, in the embodiment of the present invention, the humidity parameter in the washing box may also be determined by other sensors, which is not limited in the embodiment of the present invention.
It should be noted that the propagation speed of the ultrasonic wave in the air is 340m/s as the sound speed, and the propagation speed in the liquid is greater than the propagation speed in the air, and it is understood that the greater the humidity parameter in the washing case, the faster the propagation speed of the ultrasonic wave, and at this time, the greater the speed influence factor of the ultrasonic wave propagation in the washing case.
Step 130, determining the residual quantity of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor.
Specifically, after determining the time difference between the ultrasonic wave emitted by the ultrasonic device and the reflected signal of the received ultrasonic wave by the ultrasonic device and determining the speed influencing factor of the ultrasonic wave propagating in the washing box based on the humidity parameter detected by the humidity sensor, the remaining amount of the washing liquid in the washing box may be further determined based on the time difference, the speed influencing factor and the distance from the ultrasonic device to the washing box and the bottom. Wherein, because the supersonic device is installed at the top of the washing box, the distance from the supersonic device to the bottom of the washing box can be approximately equal to the distance from the top of the washing box to the bottom of the washing box or less than the distance from the top of the washing box to the bottom of the washing box, which is not limited in the embodiment of the invention.
Optionally, determining the remaining amount of the washing liquid in the washing box based on the distance of the ultrasonic device from the bottom of the washing box, the time difference value and the speed influence factor may include: determining the distance between the ultrasonic device and the liquid level of the washing liquid according to the time difference value, the speed influence factor and the propagation speed of ultrasonic waves in the air; taking the difference between the distance from the ultrasonic device to the bottom of the washing box and the distance between the ultrasonic device and the liquid level of the washing liquid as the height of the washing liquid in the washing box; and determining the residual quantity of the washing liquid in the washing box according to the height of the washing liquid in the washing box.
Specifically, since the reflected signal of the ultrasonic wave is reflected by the liquid surface of the washing liquid in the washing box, the distance between the ultrasonic device and the liquid surface of the washing liquid can be determined by the above-determined time difference, speed influence factor, and propagation speed of the ultrasonic wave in the air. The propagation velocity of the ultrasonic wave in the air was 340m/s.
In a specific example of an embodiment of the present invention, the distance between the ultrasonic device and the surface of the cleaning solution may be determined by the following formula:
S＝mvt/2
s is the distance between the ultrasonic device and the liquid level of the washing liquid, m is a speed influence factor, and t is a time difference value; v is the propagation velocity of the ultrasonic wave in the air.
Further, the difference between the distance from the ultrasonic device to the bottom of the washing box and the distance between the ultrasonic device and the liquid level of the washing liquid can be used as the height of the washing liquid in the washing box. For example, if the distance from the ultrasonic device to the bottom of the washing box is 20cm and the distance from the ultrasonic device to the surface of the washing liquid is 10cm, the height of the washing liquid in the washing box is 20-10=10 cm.
Further, after determining the height of the washing liquid in the washing box, the remaining amount of the washing liquid in the washing box can be determined according to the height of the washing liquid in the washing box.
In one specific example of an embodiment of the present invention, after determining the height of the wash liquid in the wash tank, the product of the floor area of the wash tank and the height of the wash liquid in the wash tank may be calculated and the result may be used as the remaining amount of the wash liquid in the wash tank.
In the scheme of the embodiment, the ultrasonic device transmits ultrasonic waves into the washing box, and the time difference between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves is determined; determining a humidity parameter within the wash tank, determining a speed-influencing factor of propagation of the ultrasonic waves within the wash tank based on the humidity parameter; the residual quantity of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference and the speed influence factor, so that the problem of inaccurate detection result caused by residual washing liquid on the inner wall of the washing box is solved, and the residual quantity of the washing liquid can be accurately detected.
Example two
Fig. 2 is a flowchart of a method for detecting the remaining amount of a washing liquid in the second embodiment of the present invention, which refines the second embodiment of the present invention based on the foregoing embodiment, and after determining the remaining amount of the washing liquid in the washing box, the method may further include: determining a deviation between a remaining amount of the washing liquid and an amount of the washing liquid used for performing the washing process determined by the dispensing device as a first remaining amount of the washing liquid; returning to the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device until the current residual quantity of the washing liquid in the washing box is determined and is used as the second residual quantity of the washing liquid; determining a difference between the first balance of the washing liquid and the second balance of the washing liquid; when the difference is greater than a set threshold, re-determining a humidity parameter within the wash tank, and determining a speed influencing factor of the propagation of the ultrasonic waves within the wash tank based on the re-determined humidity parameter; the final balance of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving reflected signals of the ultrasonic waves, and the redetermined speed influencing factor. Specifically, referring to fig. 2, the method specifically includes the following steps:
step 210, transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining the time difference between the ultrasonic device transmitting ultrasonic waves and receiving reflected signals of the ultrasonic waves.
Step 220, determining a humidity parameter in the washing box, and determining a speed influence factor of ultrasonic wave propagation in the washing box based on the humidity parameter.
Step 230, determining the residual amount of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor.
Step 231, determining a deviation between the remaining amount of the washing liquid and the amount of the washing liquid used for executing the washing program determined by the dispensing device as a first remaining amount of the washing liquid.
The feeding device can determine the amount of the washing liquid used for executing the washing program according to the washing program selected by the user and the number or weight of the clothes to be washed, and feeds the determined amount of the washing liquid into the washing barrel, so that the washing liquid participates in washing the clothes. The washing process may be, for example, a standard washing process, a rinsing process, a quick washing process, etc., which is not limited in the embodiment of the present invention.
Specifically, the remaining amount of the washing liquid is determined by the above method, and after the amount of the washing liquid used to perform the washing process is determined by the dispensing device, a difference between the two is calculated, and the difference is taken as the first remaining amount of the washing liquid. It should be noted that, the words "first" and "second" in the embodiments of the present invention are merely for better describing the embodiments of the present invention, and are not limited to the embodiments of the present invention.
For example, if the remaining amount of the washing liquid is determined to be V, and the amount of the washing liquid used to perform the washing process determined by the dispensing device is determined to be V1, the first remaining amount of the washing liquid is V-V1.
Step 232, returning to the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device until the current residual quantity of the washing liquid in the washing box is determined and is used as the second residual quantity of the washing liquid.
Specifically, after the washing procedure is executed, the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device is continued, so that the current residual quantity of the washing liquid in the washing box is determined, and the residual quantity is recorded as a second residual quantity of the washing liquid in the embodiment of the invention.
Step 233, determining a difference between the first residual amount of the washing liquid and the second residual amount of the washing liquid.
Specifically, after the first surplus of the washing liquid and the second surplus of the washing liquid are determined, the difference between the first surplus of the washing liquid and the second surplus of the washing liquid may be further determined. Illustratively, if the first balance of the cleaning solution is V-V1 and the second balance of the cleaning solution is V2, the difference between the two is V-V1-V2. It should be noted that, in the embodiment of the present invention, the first residual amount of the washing liquid may be equal to the second residual amount of the washing liquid, or may be greater than or less than the second residual amount of the washing liquid, which is not limited in the embodiment of the present invention.
Step 234, re-determining the humidity parameter in the washing box when the difference is greater than the set threshold, and determining a speed influencing factor of the propagation of the ultrasonic waves in the washing box based on the re-determined humidity parameter.
Specifically, if the difference between the first residual amount of the washing liquid and the second residual amount of the washing liquid determined in step 233 is greater than the set threshold, determining a humidity parameter in the washing box again through the humidity sensor, and determining a speed influencing factor of the transmission of the ultrasonic waves in the washing box based on the determined humidity parameter again. The threshold may be any value such as 5ml, 6ml or 10ml, which is not limited in the embodiment of the present invention.
For example, if the threshold is set to be 5ml, the first allowance of the washing liquid is V-V1, the second allowance of the washing liquid is V2, and the difference V-V1-V2 between the two is 6ml, the air component in the washing box has an effect on the propagation speed of the ultrasonic wave at this time, the humidity parameter in the washing box needs to be determined again, and the speed influencing factor of the propagation of the ultrasonic wave in the washing box is determined based on the determined humidity parameter again.
The advantage of setting like this is that through the speed influence factor that in time changes influence ultrasonic wave propagation speed, can provide the basis for the final surplus of washing liquid in the follow-up detection washing box, can not remain the washing liquid and influence detection accuracy because washing machine live time is too long, washing box inner wall.
Step 235, determining the final residual amount of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving ultrasonic wave reflected signals, and the redetermined speed influencing factor.
In the solution of this embodiment, the difference between the first surplus of the washing liquid and the second surplus of the washing liquid is determined; when the difference is greater than a set threshold, re-determining a humidity parameter within the wash tank, and determining a speed influencing factor of the propagation of the ultrasonic waves within the wash tank based on the re-determined humidity parameter; based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving ultrasonic wave reflected signals and the redetermined speed influence factor, the final allowance of the washing liquid in the washing box is determined, so that the allowance of the washing liquid in the washing box can be accurately measured, and the problem of inaccurate detection result caused by the residual washing liquid on the inner wall of the washing box is solved.
Example III
Fig. 3 is a flowchart of a method for detecting a remaining amount of a washing liquid according to a third embodiment of the present invention, where the method may further include: and when the residual quantity of the washing liquid is smaller than the set threshold value, reminding a user to add the washing liquid in a voice broadcasting and/or display mode. Specifically, referring to fig. 3, the method specifically includes the following steps:
and 310, transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining the time difference between the ultrasonic device transmitting ultrasonic waves and receiving reflected signals of the ultrasonic waves.
Step 320, determining a humidity parameter in the washing box, and determining a speed influence factor of the ultrasonic wave propagation in the washing box based on the humidity parameter.
Step 330, determining the remaining amount of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor.
And 340, reminding a user to add the washing liquid in a voice broadcasting and/or display mode when the residual quantity of the washing liquid is smaller than a set threshold value.
The threshold may be set to a value of 20ml, 30ml, or 50ml, which is not limited in the embodiment of the present invention.
Specifically, after determining the remaining amount of the washing liquid in the washing box, if the remaining amount of the washing liquid is determined to be smaller than the set threshold value, the user can be reminded of adding the washing liquid in a voice broadcasting mode and/or can be reminded of adding the washing liquid in a display mode.
In a specific example of the embodiment of the invention, if the threshold is set to be 20ml and the remaining amount of the washing liquid in the washing box is determined to be 15ml based on the distance from the ultrasonic device to the bottom of the washing box, the time difference and the speed influencing factor, the user can be reminded of adding the washing liquid in a voice broadcasting mode.
According to the scheme, when the residual quantity of the washing liquid in the washing box is insufficient, a user is reminded of adding the washing liquid in a voice broadcasting and/or display mode, so that the problem that clothes cannot be washed due to the insufficient residual quantity of the washing liquid is avoided.
On the basis of the above technical embodiments, the method for detecting the residual amount of the washing liquid may further include: when the consumption of the washing liquid used for executing the washing program is larger than a preset consumption value of the washing liquid, determining that the throwing device is in fault, and prompting a user to overhaul the throwing device.
Specifically, after determining the remaining amount of the washing liquid in the washing box, if the amount of the washing liquid used for executing the washing program is greater than a preset washing liquid consumption value, determining that a delivery device of the washing machine has a fault, and prompting a user to overhaul the delivery device. The preset consumption value of the washing liquid may be 80ml, 100ml or 200ml, which is not limited in the embodiment of the present invention.
For example, if the preset consumption value of the washing liquid is 200ml, the dispensing device determines that the consumption of the washing liquid required for executing the standard washing program is 210ml, and dispenses 210ml of the washing liquid into the washing tub, at this time, the washing machine can determine that the dispensing device is out of order, and remind a user to overhaul in a voice reminding manner or a display manner of the display unit.
The advantage of setting like this is that when the washing liquid that puts in the device and put in is excessive, in time reminds the user to overhaul the device, has reduced the waste of washing liquid, has saved the unnecessary expense of family.
For a better understanding of the embodiments of the present invention, fig. 4a is a top view of a washing cassette and a dispensing device to which the embodiments of the present invention are applied, wherein 410 is the dispensing device and 420 is the washing cassette. Fig. 4b is a schematic installation diagram of a device for detecting the residual amount of a washing liquid according to an embodiment of the present invention, wherein 430 is an ultrasonic device, and 440 is a washing box.
The principle of the embodiment of the invention and an execution process can be as follows:
since the propagation speed of the sound wave is affected by the propagation medium, the propagation speed of the ultrasonic wave is affected to some extent when the humidity or the composition in the air is different, resulting in a decrease in measurement accuracy. Therefore, a measuring method is proposed to measure the residual quantity of the washing liquid in the washing box, and the speed v is more consistent with the ultrasonic wave transmission speed in the washing box by adjusting the coefficient according to the air component and the humidity parameter m in the washing box. The distance measurement formula of the ultrasonic device is s= mvt/2, v is the propagation speed of ultrasonic waves in dry air, the unit is m/S, and t is the ultrasonic wave propagation round trip time measured by the ultrasonic device. The method mainly comprises the following steps:
1. after the ultrasonic device judges that the user finishes adding the washing liquid once, a humidity sensor is started to measure the humidity in the washing liquid box;
2. calculating a speed influence factor m through a humidity value;
3. measuring the primary washing liquid allowance V1;
4. starting a washing program by a user, and calculating the required washing throwing amount by the throwing device according to the throwing amount;
5. the washing machine carries out primary washing liquid throwing, and the throwing amount is V;
6. performing a second measurement to obtain a remaining amount V2 of the washing liquid;
7. the difference (V1-V) obtained by subtracting the amount of the added liquid from the residual amount measured before is compared with the residual amount V2 of the washing liquid obtained by the second measurement;
8. judging whether the air component affects the ultrasonic speed according to the comparison result, and calculating and changing a speed affecting factor m;
9. calculating the residual quantity of the washing liquid by using the corrected speed influence factor m;
10. and (5) carrying out next washing liquid feeding, and circularly executing 5-9.
Example IV
Fig. 5 is a schematic structural diagram of a device for detecting the residual amount of a washing liquid according to a fourth embodiment of the present invention, in which the method for detecting the residual amount of a washing liquid according to each of the above embodiments can be executed, specifically, referring to fig. 5, a device 500 for detecting the residual amount of a washing liquid includes: a time difference determination module 510, a speed impact factor determination module 520, and a remaining amount of wash liquor determination module 530.
Wherein, the time difference determining module 510 is configured to transmit ultrasonic waves into the washing box through the ultrasonic device, and determine a time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the received ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
a speed influencing factor determination module 520 for determining a humidity parameter within the wash tank, determining a speed influencing factor for propagation of the ultrasonic waves within the wash tank based on the humidity parameter;
a remaining amount determining module 530 for determining the remaining amount of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference and the speed influencing factor.
In the scheme of the embodiment, a time difference value between the ultrasonic wave emitted by the ultrasonic device and the reflected signal of the received ultrasonic wave is determined by a time difference value determining module; determining a humidity parameter in the washing box through a speed influence factor determining module, and determining a speed influence factor of the propagation of ultrasonic waves in the washing box based on the humidity parameter; the residual quantity of the washing liquid in the washing box is determined by the residual quantity determining module of the washing liquid, so that the problem of inaccurate detection result caused by residual washing liquid on the inner wall of the washing box is solved, and the residual quantity of the washing liquid can be accurately detected.
Optionally, the remaining amount determining module 530 of the washing liquid is specifically configured to determine a distance between the ultrasonic device and a liquid level of the washing liquid according to the time difference, the speed influencing factor, and a propagation speed of the ultrasonic wave in the air; taking the difference between the distance from the ultrasonic device to the bottom of the washing box and the distance between the ultrasonic device and the liquid level of the washing liquid as the height of the washing liquid in the washing box; and determining the residual quantity of the washing liquid in the washing box according to the height of the washing liquid in the washing box.
Optionally, in the embodiment of the present invention, the distance between the ultrasonic device and the liquid level of the cleaning solution may be determined based on the following formula:
S＝mvt/2
s is the distance between the ultrasonic device and the liquid level of the washing liquid, m is a speed influence factor, and t is a time difference value; v is the propagation velocity of the ultrasonic wave in the air.
Optionally, the apparatus 500 for detecting the remaining amount of the washing liquid further includes: a final remaining amount determining sub-module of the washing liquid for determining a deviation between the remaining amount of the washing liquid and an amount of the washing liquid used for executing the washing program determined by the dispensing device as a first remaining amount of the washing liquid; returning to the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device until the current residual quantity of the washing liquid in the washing box is determined and is used as the second residual quantity of the washing liquid; determining a difference between the first balance of the washing liquid and the second balance of the washing liquid; when the difference is greater than a set threshold, re-determining a humidity parameter within the wash tank, and determining a speed influencing factor of the propagation of the ultrasonic waves within the wash tank based on the re-determined humidity parameter; the final balance of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving reflected signals of the ultrasonic waves, and the redetermined speed influencing factor.
Optionally, the speed influencing factor determination module 520 is further specifically configured to determine a humidity parameter in the washing box via a humidity sensor, wherein the humidity sensor is mounted on top of the washing box.
Optionally, the apparatus 500 for detecting the remaining amount of the washing liquid further includes: and the reminding sub-module is used for reminding a user of adding the washing liquid in a voice broadcasting and/or display mode when the residual quantity of the washing liquid is smaller than a set threshold value.
Optionally, the apparatus 500 for detecting the remaining amount of the washing liquid further includes: and the overhaul prompting module is used for determining the faults of the throwing device and prompting a user to overhaul the throwing device when the using amount of the washing liquid used for executing the washing program is larger than a preset washing liquid consumption value.
The device for detecting the residual quantity of the washing liquid provided by the embodiment of the invention can execute the method for detecting the residual quantity of the washing liquid provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example five
Fig. 6 is a schematic structural view of a washing machine in accordance with a fifth embodiment of the present invention, and as shown in fig. 5, the washing machine includes a processor 60, a memory 61, an input device 62, and an output device 63; the number of processors 60 in the washing machine may be one or more, and one processor 60 is exemplified in fig. 6; the processor 60, the memory 61, the input means 62 and the output means 63 in the washing machine may be connected by a bus or other means, in fig. 6 by way of example.
The memory 61 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and a module, such as program instructions/modules corresponding to the method for detecting the remaining amount of the washing liquid in the embodiment of the present invention (for example, the time difference determining module 510, the speed influencing factor determining module 520, and the remaining amount determining module 530 in the device 500 for detecting the remaining amount of the washing liquid). The processor 60 executes various functional applications and data processing of the washing machine by executing software programs, instructions and modules stored in the memory 61, i.e., implements the above-described remaining amount detection method of the washing liquid.
The memory 61 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal, etc. In addition, the memory 61 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 61 may further include memory remotely located with respect to processor 60, which may be connected to the washing machine via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 62 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the washing machine. The output 63 may comprise a display device such as a display screen.
Example six
A sixth embodiment of the present invention also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a method of detecting a remaining amount of wash liquid, the method comprising:
transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining a time difference between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
determining a humidity parameter within the wash tank, determining a speed-influencing factor of propagation of the ultrasonic waves within the wash tank based on the humidity parameter;
the amount of wash liquid remaining in the wash tank is determined based on the distance of the ultrasonic device from the bottom of the wash tank, the time difference and the speed influencing factor.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present invention is not limited to the above-described method operations, and may also perform the related operations in the method for detecting the residual amount of the washing liquid provided in any embodiment of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above-mentioned remaining amount detection device for washing liquid, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (9)
1. A method for detecting a remaining amount of a washing liquid, comprising:
transmitting ultrasonic waves into the washing box through an ultrasonic device, and determining a time difference value between the ultrasonic device transmitting the ultrasonic waves and receiving reflected signals of the ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
determining a humidity parameter within the washing box, and determining a speed influence factor of the propagation of ultrasonic waves within the washing box based on the humidity parameter;
determining a balance of washing liquid in the washing box based on a distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influence factor;
determining a deviation between the remaining amount of the washing liquid and the amount of the washing liquid used for executing the washing program determined by the dispensing device as a first remaining amount of the washing liquid;
returning to the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device until the current residual quantity of the washing liquid in the washing box is determined and is used as the second residual quantity of the washing liquid;
determining a difference between the first balance of the wash liquor and the second balance of the wash liquor;
when the difference is greater than a set threshold, re-determining a humidity parameter in the washing box, and determining a speed influence factor of ultrasonic wave propagation in the washing box based on the re-determined humidity parameter;
the final balance of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving ultrasonic wave reflected signals, and the redetermined speed influencing factor.
2. The method of claim 1, wherein said determining a remaining amount of wash liquid in said wash tank based on a distance of said ultrasonic device from said bottom of said wash tank, said time difference, and said speed influencing factor comprises:
determining the distance between the ultrasonic device and the liquid level of the washing liquid according to the time difference value, the speed influence factor and the propagation speed of ultrasonic waves in the air;
taking the difference between the distance from the ultrasonic device to the bottom of the washing box and the distance between the ultrasonic device and the liquid level of the washing liquid as the height of the washing liquid in the washing box;
and determining the residual quantity of the washing liquid in the washing box according to the height of the washing liquid in the washing box.
3. The method of claim 2, wherein said determining the distance of the ultrasonic device from the level of the cleaning solution based on the time difference, the speed influencing factor, and the propagation speed of ultrasonic waves in air comprises:
determining the distance between the ultrasonic device and the liquid level of the washing liquid based on the following formula:
S＝mvt/2
wherein S is the distance between the ultrasonic device and the liquid level of the washing liquid, m is the speed influence factor, and t is the time difference; v is the propagation velocity of the ultrasonic wave in the air.
4. The method of claim 1, wherein said determining a humidity parameter within the wash tank comprises:
the humidity parameter in the washing box is determined by a humidity sensor, wherein the humidity sensor is mounted on the top of the washing box.
5. The method according to any one of claims 1-4, further comprising:
and when the residual quantity of the washing liquid is smaller than a set threshold value, reminding a user to add the washing liquid in a voice broadcasting and/or display mode.
6. The method as recited in claim 1, further comprising:
and when the consumption of the washing liquid used for executing the washing program is larger than a preset washing liquid consumption value, determining that the throwing device is in fault, and prompting a user to overhaul the throwing device.
7. A remaining amount detection device for a washing liquid, comprising:
the time difference determining module is used for transmitting ultrasonic waves into the washing box through the ultrasonic device and determining the time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the received ultrasonic waves; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;
a speed influence factor determining module for determining a humidity parameter within the washing box, determining a speed influence factor of the propagation of the ultrasonic waves within the washing box based on the humidity parameter;
a remaining amount determining module of the washing liquid, which is used for determining the remaining amount of the washing liquid in the washing box based on the distance from the ultrasonic device to the bottom of the washing box, the time difference value and the speed influencing factor;
a final remaining amount determining sub-module of the washing liquid for determining a deviation between the remaining amount of the washing liquid and an amount of the washing liquid used for executing the washing program determined by the dispensing device as a first remaining amount of the washing liquid; returning to the operation of transmitting ultrasonic waves into the washing box through the ultrasonic device until the current residual quantity of the washing liquid in the washing box is determined and is used as the second residual quantity of the washing liquid; determining a difference between the first balance of the wash liquor and the second balance of the wash liquor; when the difference is greater than a set threshold, re-determining a humidity parameter in the washing box, and determining a speed influence factor of ultrasonic wave propagation in the washing box based on the re-determined humidity parameter; the final balance of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the bottom of the washing box, the time difference between the ultrasonic device transmitting ultrasonic waves and receiving ultrasonic wave reflected signals, and the redetermined speed influencing factor.
8. A washing machine, comprising:
one or more processors;
storage means for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for detecting the residual amount of the washing liquid according to any one of claims 1 to 6.
9. A storage medium containing computer executable instructions which, when executed by a computer processor, are for performing a method of detecting the level of a wash liquor as claimed in any one of claims 1 to 6.
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