阅读说明：本技术 一种洗涤液的余量检测方法、装置、洗衣机及存储介质 (Washing liquid residual amount detection method and device, washing machine and storage medium ) 是由 闫天笑 舒海 许升 张宇哲 于 2020-05-18 设计创作，主要内容包括：本发明实施例公开了一种洗涤液的余量检测方法、装置、洗衣机及存储介质。其中,方法包括：通过超声波装置向洗涤盒内发射超声波,确定超声波装置发射超声波和接收超声波的反射信号之间的时间差值；其中,超声波的反射信号由洗涤盒内的洗涤液液面进行反射；确定洗涤盒内的湿度参数,基于湿度参数确定超声波在洗涤盒内的传播的速度影响因子；基于超声波装置到洗涤盒盒底的距离、时间差值以及速度影响因子确定洗涤盒内洗涤液的余量。本发明实施例的方案,解决了洗涤盒内壁上洗涤液残留导致检测结果不准确的问题,可以准确检测洗涤液的余量。(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 an ultrasonic device, and determining a time difference between reflected signals of the ultrasonic waves transmitted and received by the ultrasonic device; 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 in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter; and 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 and the speed influence factor. According to the scheme of the embodiment of the invention, 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.)

1. A method for detecting the residual amount of a cleaning solution, comprising:

transmitting ultrasonic waves into the washing box through an ultrasonic device, and determining a time difference value between reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the ultrasonic wave received by the ultrasonic device; 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 in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter;

and 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.

2. The method of claim 1, wherein said determining a remaining amount of wash solution in said wash cassette based on a distance of said ultrasonic device from a bottom of said wash cassette, said time difference, and said speed impact factor comprises:

determining the distance between the ultrasonic device and the liquid level of the cleaning solution according to the time difference, the speed influence factor and the propagation speed of the ultrasonic wave in the air;

taking the difference value between the distance from the ultrasonic device to the bottom of the washing box and the distance from the ultrasonic device to the liquid level of the washing liquid as the height of the washing liquid in the washing box;

and determining the residual amount 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 velocity impact factor, and the speed of propagation of the ultrasonic wave through the air comprises:

determining a distance of an ultrasonic device from a liquid level of the cleaning solution 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 air.

4. The method of claim 1, further comprising, after determining the remaining amount of wash solution in the wash cartridge:

determining a deviation between the residual amount of the washing liquid and the amount of the washing liquid used for executing the washing program determined by the feeding device as a first residual 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 a second residual quantity of the washing liquid;

determining a difference between the first remaining amount of the wash solution and the second remaining amount of the wash solution;

when the difference value is larger than a set threshold value, re-determining the humidity parameter in the washing box, and determining the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the re-determined humidity parameter;

and determining the final 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 between the reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the received ultrasonic wave and the re-determined speed influence factor.

5. The method of claim 1, wherein determining a humidity parameter within the wash box comprises:

determining a humidity parameter within a washing box by a humidity sensor, wherein the humidity sensor is mounted on top of the washing box.

6. The method according to any one of claims 1-5, further comprising:

and when the residual amount of the washing liquid is smaller than the set threshold value, reminding a user to add the washing liquid through voice broadcasting and/or a display mode.

7. The method of claim 4, further comprising:

and when the using amount 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 failure, and prompting a user to overhaul the throwing device.

8. A remaining amount detecting 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 wave transmitted by the ultrasonic device and the reflected signal of the ultrasonic wave received by the ultrasonic device; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;

the speed influence factor determination module is used for determining a humidity parameter in the washing box and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter;

and the 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 and the speed influence factor.

9. A washing machine, characterized in that the washing machine comprises:

one or more processors;

a storage device for storing one or more programs,

when executed by the one or more processors, cause the one or more processors to implement a method of detecting a level of a cleaning solution according to any one of claims 1-7.

10. A storage medium containing computer-executable instructions for performing a method of detecting a residual amount of a cleaning solution according to any one of claims 1 to 7 when executed by a computer processor.

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 times and the progress of science and technology, the functions of household appliances such as washing machines are more and more abundant, for example, the automatic feeding function of washing liquid is widely researched. In general, the automatic washing liquid feeding function needs to store washing liquid in a washing box installed in a washing machine in advance, and a feeding device is arranged, so that when the washing liquid needs to be added, the washing liquid in the washing box is fed into the washing barrel through the feeding device to participate in washing.

Because the washing liquid box is opaque, the user can not directly observe the washing liquid surplus; at present, the residual amount 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 washing liquid remains on the inner wall of the washing box, which results in inaccurate detection results.

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 washing liquid, the method being applied to a washing machine, and the method including:

transmitting ultrasonic waves into the washing box through an ultrasonic device, and determining a time difference value between reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the ultrasonic wave received by the ultrasonic device; 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 in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter;

and 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.

In a second aspect, an embodiment of the present invention further provides a device for detecting a remaining amount of 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 wave transmitted by the ultrasonic device and the reflected signal of the ultrasonic wave received by the ultrasonic device; wherein, the reflected signal of the ultrasonic wave is reflected by the liquid level of the washing liquid in the washing box;

the speed influence factor determination module is used for determining a humidity parameter in the washing box and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter;

and the 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 and the speed influence factor.

In a third aspect, an embodiment of the present invention further provides a washing machine, including:

one or more processors;

a storage device 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 a washing solution according to any of embodiments of the present invention.

In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, where the computer-executable instructions are used to perform a method for detecting a remaining amount of a washing liquid according to any one of the embodiments of the present invention when executed by a computer processor.

The embodiment of the invention transmits ultrasonic waves into the washing box through the ultrasonic device, and determines the time difference between the ultrasonic wave transmitted by the ultrasonic device and the reflected signal of the ultrasonic wave received; determining a humidity parameter in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter; the residual amount 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, the problem that the detection result is inaccurate due to the residual washing liquid on the inner wall of the washing box can be solved, and the residual amount of the washing liquid can be accurately detected.

Drawings

FIG. 1 is a flow chart of a method for detecting a remaining amount of a cleaning solution according to a first embodiment of the present invention;

FIG. 2 is a flowchart illustrating a method for detecting a remaining amount of a cleaning solution according to a second embodiment of the present invention;

FIG. 3 is a flowchart of a method for detecting a remaining amount of a cleaning solution according to a third embodiment of the present invention;

FIG. 4a is a top view of a washing box and dispensing device to which embodiments of the present invention are applicable;

FIG. 4b is a schematic view illustrating an installation of a device for detecting a remaining amount of a cleaning solution according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a device for detecting the remaining amount of a cleaning solution according to a fourth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a washing machine according to a fifth embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.

Example one

Fig. 1 is a flowchart of a method for detecting a remaining amount of a washing liquid according to a first embodiment of the present invention, which is applicable to a case where a remaining amount of a washing liquid in a washing box is detected, and the method can be performed by a device for detecting a remaining amount of a washing liquid, which can be implemented by software and/or hardware and integrated in a washing machine or other washing devices. Specifically, referring to fig. 1, the method specifically includes the following steps:

step 110, transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining a time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the ultrasonic waves received.

Wherein the ultrasonic device is installed on the top of the washing box, and the ultrasonic device can comprise an ultrasonic transmitter and an ultrasonic receiver. Specifically, the ultrasonic wave can be transmitted by an ultrasonic transmitter, and the reflected signal of the ultrasonic wave can be received by 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. It should be noted that the washing liquid in the embodiment of the present invention may be a liquid such as a laundry detergent, a laundry care agent, or a laundry softener, and the embodiment of the present invention is not limited thereto.

It should be noted that the washing box according to the embodiment of the present invention may be installed in a washing machine, or may be installed in a washing device such as a dishwasher, and the embodiment of the present invention 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 the ultrasonic wave, and after the ultrasonic receiver receives a reflected signal of the ultrasonic wave, a time difference between the transmission of the ultrasonic wave signal by the ultrasonic transmitter and the reception of the reflected signal of the ultrasonic wave by the ultrasonic receiver 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 time for the ultrasonic transmitter to transmit the ultrasonic wave and the time for the ultrasonic receiver to receive the reflected signal of the ultrasonic wave is t2-t 1.

And step 120, determining a humidity parameter in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave 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 no washing liquid is 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 degree, at the moment, the air humidity in the washing box is obviously greater than the external air humidity, and meanwhile, the air in the washing box also contains certain washing liquid components.

Optionally, 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, a humidity sensor installed at the top of the washing box can be used for determining a humidity parameter in the washing box, and further, a speed influence factor of the ultrasonic wave propagating in the washing box is determined according to the humidity parameter. The speed influence factor is in direct proportion to the humidity parameter in the washing box, namely the larger the humidity parameter in the washing box is, the larger the speed influence factor is; the smaller the humidity parameter in the washing box, the smaller the velocity influencing factor. For example, when the humidity parameter is 30%, the speed impact factor may be 1; the speed impact factor may be 1.3 when the humidity parameter is 60%. 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 the same as the sound speed, and is 340m/s, and the propagation speed in the liquid is higher than the propagation speed in the air, and it can be understood that the larger the humidity parameter in the washing box is, the faster the propagation speed of the ultrasonic wave is, and at this time, the larger the influence factor of the propagation speed of the ultrasonic wave in the washing box is.

And step 130, 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.

Specifically, after the time difference between the ultrasonic wave emitted by the ultrasonic wave device and the reflected signal of the received ultrasonic wave is determined by the ultrasonic wave device, and the speed influence factor of the ultrasonic wave propagating in the washing box is determined based on the humidity parameter detected by the humidity sensor, the residual quantity of the washing liquid in the washing box can be further determined based on the time difference, the speed influence factor and the distance from the ultrasonic wave device to the washing box and the bottom. Wherein, because the supersonic device is installed on 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 embodiments of the present invention.

Optionally, 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 influence factor may include: determining the distance between the ultrasonic device and the liquid level of the cleaning solution according to the time difference, the speed influence factor and the 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 from the ultrasonic device to the liquid level of the washing liquid as the height of the washing liquid in the washing box; and determining the residual amount 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 obtained by reflecting the liquid level of the washing liquid in the washing box, the distance between the ultrasonic device and the liquid level of the washing liquid can be determined by the determined time difference, the speed influence factor and the propagation speed of the ultrasonic wave in the air. The propagation speed of the ultrasonic wave in the air was 340 m/s.

In a specific example of embodiment of the present invention, the distance between the ultrasonic device and the liquid level of the cleaning solution can be determined by 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 a speed influence factor, and t is a time difference; v is the propagation velocity of the ultrasonic wave in air.

Further, the difference between the distance from the ultrasonic device to the bottom of the washing box and the distance from the ultrasonic device to the liquid level of the washing liquid can be used as the height of the washing liquid in the washing box. Illustratively, 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 liquid level of the washing liquid is 10cm, the height of the washing liquid in the washing box is 20-10 cm.

Furthermore, after the height of the washing liquid in the washing box is determined, the residual 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 a specific example of the embodiment of the present invention, after the height of the washing liquid in the washing box is determined, the product of the bottom area of the washing box and the height of the washing liquid in the washing box can be calculated, and the result can be used as the remaining amount of the washing liquid in the washing box.

According to the scheme of the embodiment, the ultrasonic wave is transmitted to the washing box through the ultrasonic device, and the time difference between the ultrasonic wave transmitted by the ultrasonic device and the reflected signal of the ultrasonic wave received by the ultrasonic device is determined; determining a humidity parameter in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter; the residual amount of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the box bottom of the washing box, the time difference and the speed influence factor, the problem that the detection result is inaccurate due to the residual washing liquid on the inner wall of the washing box is solved, and the residual amount of the washing liquid can be accurately detected.

Example two

Fig. 2 is a flowchart of a method for detecting a remaining amount of a cleaning solution in a second embodiment of the present invention, which is detailed based on the above embodiment, and after determining the remaining amount of the cleaning solution in the washing box, the method may further include: determining a deviation between the residual amount of the washing liquid and the amount of the washing liquid used for executing the washing program determined by the feeding device as a first residual 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 a second residual quantity of the washing liquid; determining a difference between a first balance of the cleaning solution and a second balance of the cleaning solution; when the difference value is larger than the set threshold value, re-determining the humidity parameter in the washing box, and determining the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the re-determined humidity parameter; and determining the final 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 between the reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the received ultrasonic wave and the re-determined speed influence 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 a time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the ultrasonic waves received.

And step 220, determining a humidity parameter in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter.

And 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.

In step 231, 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 putting device is determined as a first remaining amount of the washing liquid.

The putting device can determine the using amount of the washing liquid used for executing the washing program according to the washing program selected by the user and the number or the weight of the clothes to be washed, and put the determined using amount of the washing liquid into the washing barrel, so that the washing liquid participates in the washing of the clothes. For example, the washing process may be a standard washing process, a rinsing process, a quick washing process, or the like, which is not limited in the embodiment of the present invention.

Specifically, after determining the remaining amount of the washing liquid by the above method and the amount of the washing liquid used for executing the washing program determined by the feeding device, the difference between the remaining amount of the washing liquid and the amount of the washing liquid is calculated and used as the first remaining amount of the washing liquid. It should be noted that the terms "first" and "second" mentioned in the embodiments of the present invention are only used for better describing the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

For example, if the residual amount of the washing liquid is determined as V and the amount of the washing liquid used for performing the washing process determined by the feeding device is V1, the first residual amount of the washing liquid is V-V1.

Step 232, returning to the operation of transmitting the 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 program is executed, the operation of transmitting the ultrasonic waves in the washing box by the ultrasonic device is continued, so that the current residual amount of the washing liquid in the washing box is determined.

Step 233, determine a difference between the first remaining amount of the cleaning solution and the second remaining amount of the cleaning solution.

Specifically, after determining the first residual amount of the washing liquid and the second residual amount of the washing liquid, the difference between the first residual amount of the washing liquid and the second residual amount of the washing liquid can be further determined. Illustratively, if the first balance of the wash solution is V-V1 and the second balance of the wash 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 remaining amount of the washing liquid may be equal to or greater than or less than the second remaining amount of the washing liquid, which is not limited in the embodiment of the present invention.

And step 234, when the difference value is larger than the set threshold value, re-determining the humidity parameter in the washing box, and determining the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the re-determined humidity parameter.

Specifically, if the difference between the first residual amount of the cleaning solution and the second residual amount of the cleaning solution determined in step 233 is greater than the set threshold, the humidity parameter in the washing box is determined again by the humidity sensor, and the speed influence factor of the propagation of the ultrasonic wave in the washing box is determined based on the newly determined humidity parameter. The set 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 5ml, the first residual amount of the cleaning solution is V-V1, and the second residual amount of the cleaning solution is V2, and the difference between the two is V-V1-V2 is 6ml, then the air content in the washing box at this time has an influence on the propagation speed of the ultrasonic wave, and it is necessary to redetermine the humidity parameter in the washing box, and determine the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the redetermined humidity parameter.

The advantage that sets up like this lies in, through the speed influence factor that influences ultrasonic wave propagation speed in time change, can provide the basis for the final surplus of follow-up washing liquid that detects in the washing box, can not be because of washing machine live time is too long, washing liquid is remained to the washing box inner wall and influence the detection precision.

And 235, determining the final residual quantity of the washing liquid in the washing box based on the distance between the ultrasonic device and the bottom of the washing box, the time difference between the reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the received ultrasonic wave and the re-determined speed influence factor.

The scheme of the embodiment is that the difference value between the first residual amount of the washing liquid and the second residual amount of the washing liquid is determined; when the difference value is larger than the set threshold value, re-determining the humidity parameter in the washing box, and determining the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the re-determined humidity parameter; the final residual quantity of the washing liquid in the washing box is determined based on the distance from the ultrasonic device to the box bottom of the washing box, the time difference between the ultrasonic wave transmitted by the ultrasonic device and the reflected signal of the ultrasonic wave received by the ultrasonic device and the redetermined speed influence factor, so that the residual quantity 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 cleaning solution in a third embodiment of the present invention, which is detailed based on the above embodiments, and the method may further include: when the residual amount of the washing liquid is smaller than the set threshold value, a user is reminded to add the washing liquid through voice broadcasting and/or a display mode. Specifically, referring to fig. 3, the method specifically includes the following steps:

step 310, transmitting ultrasonic waves into the washing box through the ultrasonic device, and determining a time difference between the ultrasonic waves transmitted by the ultrasonic device and the reflected signals of the ultrasonic waves received.

And step 320, determining a humidity parameter in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter.

And step 330, 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.

And step 340, when the residual amount of the cleaning solution is smaller than the set threshold value, reminding a user to add the cleaning solution through voice broadcasting and/or a display mode.

The set threshold may be 20ml, 30ml, or 50ml, which is not limited in the embodiment of the present invention.

Specifically, after the residual amount of the washing liquid in the washing box is determined, if the residual amount of the washing liquid is determined to be smaller than a set threshold value, a user can be reminded of adding the washing liquid in a voice broadcasting mode, and/or the user is reminded of adding the washing liquid in a display unit displaying mode.

In a specific example of the embodiment of the present invention, if the threshold is set to 20ml, and the remaining amount of the cleaning solution in the cleaning box is determined to be 15ml based on the distance from the ultrasonic device to the bottom of the cleaning box, the time difference, and the speed influence factor, then the user may be prompted to add the cleaning solution in a voice broadcast manner.

The scheme of this embodiment, when the washing liquid surplus is not enough in the washing box, remind the user to add the washing liquid through voice broadcast and/or display mode, avoided because the washing liquid surplus is not enough, and the problem of the clean clothes of unable washing.

On the basis of the above technical embodiments, the method for detecting the remaining amount of the washing liquid may further include: and when the using amount of the washing liquid used for executing the washing program is larger than a preset washing liquid consumption value, determining that the throwing device has a fault, and prompting a user to overhaul the throwing device.

Specifically, after the residual amount of the washing liquid in the washing box is determined, if the amount of the washing liquid used for executing the washing program is larger than a preset washing liquid consumption value, it is determined that a fault exists in a feeding device of the washing machine, and a user is prompted to overhaul the feeding device. The preset washing solution consumption value may be 80ml, 100ml or 200ml, which is not limited in the embodiments of the present invention.

For example, if the preset washing liquid consumption value is 200ml, the feeding device determines that the amount of the washing liquid required for executing the standard washing program is 210ml, and feeds 210ml of the washing liquid into the washing tub, at this time, the washing machine may determine that the feeding device is faulty, and remind the user of performing the maintenance through a voice reminding manner or a display manner of the display unit.

The advantage that sets up like this lies in, when the washing liquid of puting in the device and puting in is excessive, in time reminds the user to overhaul the device of puting in, has reduced the waste of washing liquid, has saved the family unnecessary spending.

For better understanding of the embodiment of the present invention, fig. 4a is a top view of a washing box and a dispensing device to which the embodiment of the present invention is applied, wherein 410 is the dispensing device, and 420 is the washing box. Fig. 4b is a schematic view illustrating the installation of a device for detecting the remaining amount of a cleaning solution according to an embodiment of the present invention, wherein 430 is an ultrasonic device, and 440 is a cleaning box.

The principle and an execution process of the embodiment of the invention 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 a certain extent when the humidity or the components in the air are different, resulting in a decrease in the measurement accuracy. Therefore, a measuring method is provided for measuring the residual quantity of the washing liquid in the washing box, and the speed v is more consistent with the ultrasonic propagation speed in the washing box by adjusting the coefficient according to the air composition and the humidity parameter m in the washing box. The distance measurement formula of the ultrasonic device is that S is mvt/2, v is the propagation speed unit of the ultrasonic wave in the dry air 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 adds the washing liquid for one time, a humidity sensor is started to measure the humidity in the washing liquid box;

2. calculating a speed influence factor m according to the humidity value;

3. measuring the residual amount V1 of the primary washing liquid;

4. the user starts a washing program, and the putting device calculates the putting amount required by the washing according to the putting amount;

5. the washing machine carries out one-time washing liquid feeding, and the feeding amount is V;

6. carrying out second measurement to obtain the residual amount V2 of the washing liquid;

7. comparing the difference (V1-V) obtained by subtracting the amount of the detergent from the residual amount measured before with the residual amount V2 of the detergent obtained by the second measurement;

8. judging whether the air components influence the ultrasonic speed according to the comparison result, and calculating and changing a speed influence factor m;

9. calculating the residual amount of the washing liquid by using the corrected speed influence factor m;

10. and (5) carrying out next washing liquid feeding and circularly executing for 5-9.

Example four

Fig. 5 is a schematic structural diagram of a device for detecting a remaining amount of a cleaning solution according to a fourth embodiment of the present invention, which is capable of performing a method for detecting a remaining amount of a cleaning solution according to the foregoing embodiments, specifically, referring to fig. 5, the device 500 for detecting a remaining amount of a cleaning solution includes: a time difference determination module 510, a speed impact factor determination module 520, and a wash liquid residual determination module 530.

The time difference determining module 510 is configured to transmit an ultrasonic wave into the washing box through the ultrasonic device, and determine a time difference between reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the ultrasonic wave received by the ultrasonic device; 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 determination module 520, configured to determine a humidity parameter in the washing box, and determine a speed influence factor of propagation of the ultrasonic waves in the washing box based on the humidity parameter;

and a residual amount determining module 530 for 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.

In the scheme of the embodiment, a time difference value determining module determines a time difference value between the reflected signals of the ultrasonic wave emitted by the ultrasonic wave device and the received ultrasonic wave; 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 the ultrasonic wave in the washing box based on the humidity parameter; the residual quantity of the washing liquid in the washing box is determined through the residual quantity determining module of the washing liquid, the problem that the detection result is inaccurate due to the residual quantity of the 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 cleaning solution allowance determination module 530 is specifically configured to determine a distance between the ultrasonic device and the liquid level of the cleaning solution according to the time difference, the speed influence factor, and the 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 from the ultrasonic device to the liquid level of the washing liquid as the height of the washing liquid in the washing box; and determining the residual amount 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

wherein 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; v is the propagation velocity of the ultrasonic wave in air.

Optionally, the device 500 for detecting the remaining amount of the washing liquid further includes: a final residual amount determining submodule for determining a deviation between the residual amount of the washing liquid and the amount of the washing liquid used for executing the washing program determined by the feeding device as a first residual 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 a second residual quantity of the washing liquid; determining a difference between a first balance of the cleaning solution and a second balance of the cleaning solution; when the difference value is larger than the set threshold value, re-determining the humidity parameter in the washing box, and determining the speed influence factor of the propagation of the ultrasonic wave in the washing box based on the re-determined humidity parameter; and determining the final 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 between the reflected signals of the ultrasonic wave transmitted by the ultrasonic device and the received ultrasonic wave and the re-determined speed influence factor.

Optionally, the speed influencing factor determining module 520 is further specifically configured to determine a humidity parameter in the washing box through a humidity sensor, wherein the humidity sensor is installed at the top of the washing box.

Optionally, the device 500 for detecting the remaining amount of the washing liquid further includes: and the reminding submodule is used for reminding a user of adding the washing liquid in a voice broadcasting and/or displaying mode when the allowance of the washing liquid is smaller than the set threshold value.

Optionally, the device 500 for detecting the remaining amount of the washing liquid further includes: and the maintenance prompting module is used for determining the fault of 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, and prompting a user to maintain the throwing device.

The residual amount detection device for the washing liquid provided by the embodiment of the invention can execute the residual amount detection method for 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 diagram of a washing machine in a fifth embodiment of the invention, 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 the 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 device 62 and the output device 63 in the washing machine may be connected by a bus or other means, and the bus connection is exemplified in fig. 6.

The memory 61 may be used as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the method for detecting the remaining amount of the cleaning solution according to the embodiment of the present invention (for example, the time difference value determining module 510, the speed influence factor determining module 520, and the remaining amount of the cleaning solution determining module 530 in the remaining amount detecting device 500 for the cleaning solution). The processor 60 executes various functional applications and data processing of the washing machine, i.e., implements the above-described method for detecting the remaining amount of the washing liquid, by operating software programs, instructions, and modules stored in the memory 61.

The memory 61 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, 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, the memory 61 may further include memory remotely located from the processor 60, which may be connected to the washing machine over 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 generate key signal inputs related to user settings and function controls of the washing machine. The output device 63 may include a display device such as a display screen.

EXAMPLE six

An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for detecting a remaining amount of a cleaning solution, the method including:

transmitting ultrasonic waves into the washing box through an ultrasonic device, and determining a time difference between reflected signals of the ultrasonic waves transmitted and received by the ultrasonic device; 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 in the washing box, and determining a speed influence factor of the propagation of the ultrasonic wave in the washing box based on the humidity parameter;

and 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 and the speed influence factor.

Of course, the storage medium provided by the embodiments of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the method for detecting a remaining amount of a cleaning solution provided by any embodiments of the present invention.

From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

It should be noted that, in the embodiment of the device for detecting the remaining amount of the cleaning solution, the units and modules included in the device are merely divided according to the functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.