Calibration methods and devices for liquid level sensors, laundry washing devices and electronic equipment

Abstract

This disclosure relates to a calibration method, apparatus, laundry washing device, and electronic device for a liquid level sensor. The calibration method for the liquid level sensor includes: acquiring physical characteristic parameters of the location of a heating device and first volume information indicating the liquid detected by the liquid level detection device; determining second volume information indicating the liquid's position at the heating device location based on the physical characteristic parameters of the heating device location; and calibrating the first volume information based on the second volume information. Using the method provided in this disclosure can improve the accuracy and safety of the liquid level sensor.

Description

Technical Field

[0001] This disclosure relates to the field of sensor technology, and in particular to a calibration method, apparatus, laundry washing device, and electronic equipment for a liquid level sensor. Background Technology

[0002] In related technologies, laundry washing machines are typically equipped with a heating element. To ensure the heating element functions properly, a liquid level detection device, such as a liquid level sensor, is usually installed inside the washing machine to detect the liquid level and ensure the heating element is fully submerged. Currently, liquid level detection devices usually utilize the principle of communicating vessels to detect the liquid level in the tub. However, if the liquid level sensor is damaged or liquid is present before use, the liquid level detected by the sensor may be inaccurate. This could lead to a risk of the heating element burning out, creating a safety hazard. Summary of the Invention

[0003] This disclosure provides a calibration method, apparatus, laundry washing device, and electronic device for a liquid level sensor. The technical solution of this disclosure is as follows:

[0004] According to a first aspect of the present disclosure, a calibration method for a liquid level sensor is provided, comprising:

[0005] The physical characteristics parameters of the heating device location and the first volume information of the liquid detected by the liquid level detection device are obtained.

[0006] Based on the physical characteristics parameters of the location of the heating device, a second volume information is determined to indicate when the liquid is located at the location of the heating device;

[0007] The first volume information is calibrated based on the second volume information.

[0008] In one possible implementation, the physical property parameters include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

[0009] In one possible implementation, obtaining the physical characteristic parameters of the location of the heating device includes:

[0010] The physical characteristic parameters of the heating device location are acquired through a target sensor; the target sensor includes at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

[0011] In one possible implementation, the target sensor is mounted in combination with the thermistor of the heating device, or is disposed on the rubber ring of the heating device.

[0012] In one possible implementation, determining the second volume information indicating the location of the liquid at the heating device location based on the physical characteristic parameters of the heating device location includes:

[0013] Determine whether there is liquid at the location of the heating device based on the physical characteristics parameters of the location of the heating device;

[0014] If there is liquid at the location of the heating device, obtain preset liquid volume information;

[0015] The preset liquid volume information is determined as a second volume information used to indicate the position of the liquid when it is located in the heating device.

[0016] In one possible implementation, calibrating the first volume information based on the second volume information includes:

[0017] Calculate the absolute value of the difference between the second volume information and the first volume information;

[0018] If the absolute value of the difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold, the first volume information is adjusted to the second volume information.

[0019] According to a second aspect of the present disclosure, a calibration apparatus for a liquid level sensor is provided, comprising:

[0020] The data acquisition module is used to acquire physical characteristic parameters of the heating device location, as well as first volume information of the liquid detected by the liquid level detection device.

[0021] The determining module is used to determine second volume information indicating when the liquid is located at the position of the heating device, based on the physical characteristic parameters of the position of the heating device.

[0022] A calibration module is used to calibrate the first volume information based on the second volume information.

[0023] In one possible implementation, the physical property parameters include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

[0024] In one possible implementation, the data acquisition module is specifically used for:

[0025] The physical characteristic parameters of the heating device location are acquired through a target sensor; the target sensor includes at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

[0026] In one possible implementation, the target sensor is mounted in combination with the thermistor of the heating device, or is disposed on the rubber ring of the heating device.

[0027] In one possible implementation, the determining module includes:

[0028] The first determining unit is used to determine whether there is liquid at the location of the heating device based on the physical characteristic parameters of the location of the heating device;

[0029] The acquisition unit is used to acquire preset liquid volume information when there is liquid at the location of the heating device;

[0030] The second determining unit is used to determine the preset liquid volume information as second volume information for indicating the position of the liquid when it is located in the heating device.

[0031] In one possible implementation, the calibration module includes:

[0032] The calculation unit is used to calculate the absolute value of the difference between the second volume information and the first volume information;

[0033] The calibration unit is used to adjust the first volume information to the second volume information when the absolute value of the difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold.

[0034] According to a third aspect of an embodiment of this disclosure, a laundry washing apparatus is provided, including a calibration device for a liquid level sensor as described in any of the second aspects.

[0035] According to a fourth aspect of the present disclosure, an electronic device is provided, comprising:

[0036] processor;

[0037] Memory used to store the processor's executable instructions;

[0038] The processor is configured to execute the instructions to implement the calibration method for the level sensor as described in any one of the first aspects.

[0039] According to a fifth aspect of the present disclosure, a storage medium is provided that, when instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to perform a calibration method for a liquid level sensor as described in any one of the first aspects.

[0040] According to a sixth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements a calibration method for a liquid level sensor as described in any one of the first aspects.

[0041] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0042] In this embodiment, physical characteristic parameters of the heating device's location and first volume information indicating the liquid detected by the level detection device are obtained. Second volume information indicating the liquid's position at the heating device's location is determined based on the physical characteristic parameters of the heating device's location. The first volume information is then calibrated based on the second volume information. Because of the positional stability of the heating device, the volume of liquid submerged above it is relatively fixed, meaning the volume of liquid reaching the heating device's location is relatively fixed. Therefore, calibrating the first volume information detected by the level detection device based on the second volume information determined according to the physical characteristic parameters of the heating device's location can solve the problem of inaccurate liquid level readings due to sensor damage or the presence of liquid before use. This improves the accuracy of the level sensor, effectively avoiding the risk of dry burning of the heating device and enhancing safety.

[0043] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0044] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0045] Figure 1 This is a flowchart illustrating a calibration method for a liquid level sensor according to an exemplary embodiment;

[0046] Figure 2 This is a schematic diagram illustrating a conductivity sensor according to an exemplary embodiment;

[0047] Figure 3 This is a schematic diagram illustrating a dielectric constant sensor according to an exemplary embodiment;

[0048] Figure 4 This is a schematic diagram illustrating a refractive index sensor according to an exemplary embodiment;

[0049] Figure 5 This is a schematic diagram illustrating a density sensor according to an exemplary embodiment;

[0050] Figure 6 This is a schematic diagram illustrating the installation position of a target sensor according to an exemplary embodiment;

[0051] Figure 7This is a flowchart illustrating another calibration method for a liquid level sensor according to an exemplary embodiment;

[0052] Figure 8 This is a block diagram illustrating a calibration device for a liquid level sensor according to an exemplary embodiment;

[0053] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0054] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0056] The calibration method, apparatus, laundry washing apparatus, and electronic equipment for the liquid level sensor provided in the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0057] Figure 1 This is a flowchart illustrating a calibration method for a liquid level sensor according to an exemplary embodiment. This calibration method can be applied to the controller of a laundry washing device. Figure 1 As shown, the calibration method for a liquid level sensor may include the following steps.

[0058] In step S101, the physical characteristic parameters of the heating device location and the first volume information of the liquid detected by the liquid level detection device are obtained.

[0059] In this embodiment, a heating device is generally installed inside a laundry washing apparatus with a heating function. This heating device can be, for example, a heating element, a heating ring, or other heating components. The heating device is typically located between the inner and outer drums of the laundry washing apparatus, and its position within the apparatus is usually fixed. The height of the heating device relative to the bottom of the drum, the water level reaching the heating device, and the water volume are all fixed. Furthermore, considering that the volume information of the liquid inside the drum detected by the level sensor (e.g., the liquid level height) may be inaccurate, and given that the position of the heating device within the laundry washing apparatus is fixed, and that the physical properties of air and water are different, the presence of water at the heating device's location can be determined by the values ​​of these physical properties. The volume information of the liquid at the heating device's location can then be determined based on the physical properties of the heating device's location, thus calibrating the volume information of the liquid inside the drum detected by the level sensor. Therefore, during the calibration of the level sensor, the physical properties of the heating device's location and the volume information of the liquid inside the drum detected by the level sensor can be obtained, i.e., the first volume information. For example, the liquid level sensor can be connected to the controller of the laundry appliance. This connection can be a wired connection or a communication connection, so that the controller of the laundry appliance can obtain the first volume information of the liquid in the tub detected by the liquid level sensor through the connection. The liquid can be, for example, water, or it may be a mixture of water and laundry detergent, fabric fragrance, etc.

[0060] In step S102, second volume information for indicating when the liquid is located at the heating device position is determined based on the physical characteristic parameters of the heating device position.

[0061] In this embodiment of the disclosure, after obtaining the physical characteristic parameters of the heating device location and the first volume information for indicating the liquid detected by the liquid level detection device, the volume information for indicating the liquid's position at the heating device location, i.e., the second volume information, can be determined based on the physical characteristic parameters of the heating device location. For example, it can be determined whether there is water at the heating device location based on the physical characteristic parameters of the heating device location, and the second volume information for the liquid's position at the heating device location can be determined based on the presence or absence of water at the heating device location.

[0062] In step S103, the first volume information is calibrated based on the second volume information.

[0063] In this embodiment of the disclosure, after determining the second volume information of the liquid at the heating device location based on the physical characteristic parameters of the heating device location, the first volume information of the liquid detected by the liquid level detection device can also be calibrated based on the second volume information of the liquid at the heating device location. For example, the first volume information of the liquid detected by the liquid level detection device can be calibrated to the second volume information of the liquid at the heating device location.

[0064] In this embodiment, physical characteristic parameters of the heating device's location and first volume information indicating the liquid detected by the level detection device are obtained. Second volume information indicating the liquid's position at the heating device's location is determined based on the physical characteristic parameters of the heating device's location. The first volume information is then calibrated based on the second volume information. Because of the positional stability of the heating device, the volume of liquid submerged above it is relatively fixed, meaning the volume of liquid reaching the heating device's location is relatively fixed. Therefore, calibrating the first volume information detected by the level detection device based on the second volume information determined according to the physical characteristic parameters of the heating device's location can solve the problem of inaccurate liquid level readings due to sensor damage or the presence of liquid before use. This improves the accuracy of the level sensor, effectively avoiding the risk of dry burning of the heating device and enhancing safety.

[0065] In one possible implementation, the physical characteristic parameters of the location of the heating device may include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

[0066] In this embodiment, considering that the physical properties of air and water, such as conductivity, dielectric constant, refractive index, and density, are different and the differences are significant, the second volume information of the liquid at the heating device location can be determined based on the conductivity, dielectric constant, refractive index, and density at the heating device location. Accordingly, obtaining the physical property parameters at the heating device location can actually involve obtaining at least one of the conductivity, dielectric constant, refractive index, and density at the heating device location. This allows for calibration of the liquid level sensor based on different physical characteristic parameters, thereby improving the practicality of the liquid level sensor calibration method in this embodiment.

[0067] In a further possible implementation, the specific way to obtain the physical characteristic parameters of the heating device location in the above steps can be as follows:

[0068] Obtain the physical characteristic parameters of the heating device location collected by the target sensor.

[0069] The target sensor may include at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

[0070] In this embodiment, different physical characteristic parameters can be acquired using corresponding sensors (i.e., target sensors). For example, a target sensor can be positioned at the heating device location and connected to a controller. This connection can be a wired connection or a communication connection. The target sensor can acquire the physical characteristic parameters of the heating device location, and the controller can obtain these parameters from the target sensor. In this way, different physical characteristic parameters can be acquired using different sensors, thereby providing an accurate data basis for determining the second volume information of the liquid at the heating device location and for calibrating the values ​​of the liquid level sensor.

[0071] For example, when the physical property parameter is electrical conductivity, a conductivity sensor can be installed at the location of the heating device. A schematic diagram of the conductivity sensor can be shown as follows. Figure 2 As shown. Considering that the conductivity of air is almost zero over different temperature ranges, while the conductivity changes significantly when the sensor is immersed in a liquid (such as water), specifically, the conductivity of water varies from 0.5 to 5*10⁻⁶ under different hardness and temperature conditions. -2 S / m. Therefore, the difference in conductivity can be detected. When there is a significant change in conductivity, it can be determined that the water level has reached the position of the heating device, thus determining the second volume information of the liquid at the heating device position to calibrate the value of the liquid level sensor. When the physical property parameter is dielectric constant, a dielectric constant sensor can be installed at the heating device position. A schematic diagram of the dielectric constant sensor can be shown as follows. Figure 3 As shown, considering that the relative permittivity of air is generally 1 and that of water is 70-80, the difference is very high. Therefore, by detecting the difference in permittivity between air and water, it is possible to determine whether the water level has reached the position of the heating device, thereby determining the second volume information of the liquid at the position of the heating device and calibrating the value of the liquid level sensor.

[0072] When the physical property parameter is refractive index, a refractive index sensor can be installed at the location of the heating device. A schematic diagram of the refractive index sensor can be shown as follows. Figure 4 As shown, considering the different refractive indices of air and water, the refractive index sensor checks the degree of light entering and exiting the path to determine the refractive index at the heating device location. This information is then used to determine the second volume of the liquid at the heating device location to calibrate the liquid level sensor's value. When the physical property parameter is density, a density sensor can be installed at the heating device location. A schematic diagram of the density sensor can be seen as follows. Figure 5As shown, considering the different densities of air and water, with water being several hundred times denser than air, the density at the location of the heating device can be detected by the density sensor's density detection probe. When there is a significant change in density, it indicates that the water level has reached the location of the heating device, thus determining the second volume information of the liquid at the location of the heating device to calibrate the value of the liquid level sensor.

[0073] In a further possible implementation, the target sensor may be mounted in combination with the thermistor of the heating device, or it may be mounted on the rubber ring of the heating device.

[0074] In embodiments of this disclosure, reference is made to Figure 6 The target sensor's installation location can be considered in combination with the existing NTC (Negative Temperature Coefficient thermistor) function of the heating device. Figure 6 Position 1 in the middle indicates the installation location of the NTC. For example, the NTC in related technologies can be functionally extended to include the above-mentioned functions, that is, to include at least one of the physical characteristic parameters selected from conductivity, dielectric constant, refractive index, and density. Alternatively, the target sensor can be installed separately on the heating device, as exemplified by... Figure 6 As shown, the target sensor can be mounted on the rubber ring of the heating device. For example, holes can be drilled at other locations on the rubber ring of the heating device, and the above-mentioned target sensors can be mounted accordingly. In this way, different target sensor setting methods can be provided, thereby further improving the adaptability of the liquid level sensor calibration method.

[0075] In one possible implementation, the specific way to determine the second volume information for indicating the location of the liquid when it is in the position of the heating device based on the physical characteristic parameters of the heating device location in step S102 above can be as follows:

[0076] Determine whether there is liquid at the location of the heating device based on the physical characteristics parameters of the location;

[0077] If there is liquid at the location of the heating device, obtain the preset liquid volume information;

[0078] The preset liquid volume information is determined as the second volume information used to indicate the position of the liquid when it is in the heating device position.

[0079] In this embodiment, considering that the position of the heating device in the laundry washing device is usually fixed, and the height of the heating device relative to the bottom of the laundry washing device tub, the liquid level value reaching the heating device, or the liquid volume are all fixed, a preset fixed volume information, i.e., preset liquid volume information, can be set for the position of the heating device. This preset liquid volume information can be understood as the volume information of the liquid when it reaches the position of the heating device. The second volume information is determined based on the preset liquid volume information. For example, when determining the second volume information of the liquid at the position of the heating device based on the physical characteristic parameters of the position of the heating device, it is possible to first determine whether there is water at the position of the heating device based on the obtained physical characteristic parameters of the position of the heating device. Taking the dielectric constant as an example, assuming that the detected dielectric constant is 75, it can be determined whether 75 is within a preset range. The preset range can be, for example, 70-80, 65-80, 70-85, etc. The specific value can be set according to actual needs. Assuming that the preset range is 70-80, it can be determined that there is liquid at the position of the heating device. Considering that the liquid in the laundry washing device is usually water, it can be determined here that there is water at the position of the heating device. When there is liquid at the heating device location, preset liquid volume information can be obtained, and this preset liquid volume information can be determined as the volume information indicating the liquid's position at the heating device location, i.e., the second volume information. In this way, the second volume information can be determined by determining whether there is liquid at the heating device location, thus simplifying the method for determining the second volume information and improving its efficiency, thereby enhancing the calibration efficiency of the liquid level sensor.

[0080] In one possible implementation, the specific way to calibrate the first volume information based on the second volume information in step S103 above can be as follows:

[0081] Calculate the absolute value of the difference between the second volume information and the first volume information;

[0082] If the absolute value of the difference is greater than or equal to the first preset threshold and less than or equal to the second preset threshold, the first volume information is adjusted to the second volume information.

[0083] In this embodiment, considering the potential error in the first volume information detected by the liquid level sensor, although the error is usually not particularly large, if the first volume information detected by the liquid level sensor is much larger than the second volume information, the water level in the tank may have already far exceeded the position of the heating device. In this case, adjusting the first volume information to the second volume information would be unreasonable. Alternatively, if the difference between the first and second volume information detected by the liquid level sensor is very small, adjusting the first volume information to the second volume information would not have a significant effect. Therefore, the first volume information can be adjusted to the second volume information when the absolute value of the difference between the second and first volume information is within a certain range. For example, when calibrating the first volume information based on the second volume information, the difference between the second and first volume information can be calculated first, and the absolute value of the difference can be determined. Then, a pre-set first preset threshold and a second preset threshold can be obtained, and the absolute value of the difference between the second and first volume information can be compared with the first preset threshold to determine whether the absolute value of the difference between the second and first volume information is greater than or equal to the first preset threshold.

[0084] If the absolute value of the difference between the second volume information and the first volume information is greater than or equal to a first preset threshold, the absolute value of the difference between the second volume information and the first volume information can be compared with a second preset threshold to determine whether the absolute value of the difference between the second volume information and the first volume information is less than or equal to the second preset threshold. If the absolute value of the difference between the second volume information and the first volume information is less than or equal to the second preset threshold, the first volume information can be adjusted to the second volume information. Taking a second volume information of 10, a first preset threshold of 1, and a second preset threshold of 10 as an example, if the first volume information is 12, the absolute value of the difference between the second volume information and the first volume information is 2. It can be determined that 2 is greater than the first preset threshold of 1 and less than the second preset threshold of 10. In this case, the first volume information can be adjusted to the second volume information, that is, the first volume information 12 is calibrated to 10. If the first volume information is 9, the absolute value of the difference between the second volume information and the first volume information is 1. It can be determined that 1 is equal to the first preset threshold of 1 and less than the second preset threshold of 10. In this case, the first volume information can be adjusted to the second volume information, that is, the first volume information 9 is calibrated to 10. Conversely, if the first volume information is 25, the absolute value of the difference between the second volume information and the first volume information is 15. It can be determined that 15 is greater than the first preset threshold of 1 and greater than the second preset threshold of 10. In this case, no calibration of the first volume information is required. It is understandable that if the first volume information and the second volume information are the same, no calibration is needed. This allows for calibration of the level sensor within a fixed range, which not only further improves the accuracy of the level sensor but also avoids unnecessary calibration processes and reduces resource consumption.

[0085] In one possible implementation, the volume information can be water volume or water level.

[0086] In this embodiment, considering that some laundry washing devices output the water level in the tub, while others output the volume of water in the tub, the volume information in any of the above embodiments, including first volume information and second volume information, can be either water volume or water level. Accordingly, calibrating the first volume information based on the second volume information can be based on calibrating the water volume detected by the liquid level detection device based on the water volume at the heating device location, or calibrating the water level detected by the liquid level detection device based on the water level at the heating device location. Thus, the liquid level sensor can be calibrated based on either water volume or water level, thereby further improving the applicability of the liquid level sensor calibration method.

[0087] To make the calibration method of the liquid level sensor provided in the embodiments of this disclosure clearer, the following description is in conjunction with the accompanying drawings. Figure 7 The calibration method for the liquid level sensor provided in the embodiments of this disclosure will be described. For example... Figure 7 As shown, the calibration method for the liquid level sensor includes the following steps:

[0088] In step S710, the washing program begins.

[0089] In step S720, water enters the laundry washing device.

[0090] In step S730, the liquid level detection device detects whether the first volume information of the liquid has been detected.

[0091] If the liquid level detection device does not detect the first volume information of the liquid, then continue to execute step S720 above. Otherwise, continue to execute step S740.

[0092] In step S740, the second volume information of the liquid at the location of the heating device is obtained.

[0093] In step S750, it is determined whether the first volume information and the second volume information are consistent.

[0094] If the first volume information matches the second volume information, proceed to steps S760 and S7100. Otherwise, proceed to steps S770-S7100.

[0095] In step S760, water continues to be supplied.

[0096] In step S770, the absolute value of the difference between the second volume information and the first volume information is calculated.

[0097] In step S780, if the absolute value of the difference is greater than or equal to the first preset threshold and less than or equal to the second preset threshold, the first volume information is adjusted to the second volume information.

[0098] In step S790, water continues to be supplied.

[0099] In step S7100, water is introduced to the target water level.

[0100] In this embodiment, the specific implementation methods and technical effects of the above steps are similar to those in the above method embodiments, and will not be repeated here.

[0101] Based on the same inventive concept, embodiments of this disclosure also provide a calibration device for a liquid level sensor, such as... Figure 8 As shown, Figure 8 This is a block diagram illustrating a calibration apparatus for a liquid level sensor according to an exemplary embodiment. (Refer to...) Figure 8 The calibration device 800 for the liquid level sensor may include:

[0102] The data acquisition module 810 is used to acquire physical characteristic parameters of the heating device location and first volume information of the liquid detected by the liquid level detection device.

[0103] The determining module 820 is used to determine second volume information indicating when the liquid is located at the position of the heating device based on the physical characteristic parameters of the position of the heating device;

[0104] The calibration module 830 is used to calibrate the first volume information based on the second volume information.

[0105] In one possible implementation, the physical property parameters include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

[0106] In one possible implementation, the data acquisition module 810 is specifically used for:

[0107] The physical characteristic parameters of the heating device location are acquired through a target sensor; the target sensor includes at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

[0108] In one possible implementation, the target sensor is mounted in combination with the thermistor of the heating device, or is disposed on the rubber ring of the heating device.

[0109] In one possible implementation, the determining module 820 includes:

[0110] The first determining unit is used to determine whether there is liquid at the location of the heating device based on the physical characteristic parameters of the location of the heating device;

[0111] The acquisition unit is used to acquire preset liquid volume information when there is liquid at the location of the heating device;

[0112] The second determining unit is used to determine the preset liquid volume information as second volume information for indicating the position of the liquid when it is located in the heating device.

[0113] In one possible implementation, the calibration module 830 includes:

[0114] The calculation unit is used to calculate the absolute value of the difference between the second volume information and the first volume information;

[0115] The calibration unit is used to adjust the first volume information to the second volume information when the absolute value of the difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold.

[0116] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0117] Based on the same inventive concept, embodiments of this disclosure also provide a clothing washing apparatus, including a calibration device for a liquid level sensor as described in any of the above embodiments.

[0118] According to embodiments of this disclosure, this disclosure also provides an electronic device, a storage medium, and a computer program product.

[0119] Figure 9 A schematic block diagram of an example electronic device 900 that can be used to implement embodiments of the present disclosure is shown. The electronic device 900 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0120] like Figure 9 As shown, the electronic device 900 includes a computing unit 901, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 902 or a computer program loaded from a storage unit 908 into a random access memory (RAM) 903. The RAM 903 may also store various programs and data required for the operation of the device 900. The computing unit 901, ROM 902, and RAM 903 are interconnected via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0121] Multiple components in electronic device 900 are connected to I / O interface 905, including: input unit 906, such as keyboard, mouse, etc.; output unit 907, such as various types of displays, speakers, etc.; storage unit 908, such as disk, optical disk, etc.; and communication unit 909, such as network card, modem, wireless transceiver, etc. Communication unit 909 allows electronic device 900 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0122] The computing unit 901 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 901 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 901 performs the various methods and processes described above, such as a calibration method for a liquid level sensor. For example, in some embodiments, the calibration method for a liquid level sensor may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 908. In some embodiments, part or all of the computer program may be loaded and / or mounted on the electronic device 900 via ROM 902 and / or communication unit 909. When the computer program is loaded into RAM 903 and executed by the computing unit 901, one or more steps of the calibration method for a liquid level sensor described above may be performed. Alternatively, in other embodiments, the computing unit 901 may be configured to perform the calibration method for a liquid level sensor by any other suitable means (e.g., by means of firmware).

[0123] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0124] The program code of a computer program product used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0125] In the context of this disclosure, a storage medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A storage medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0126] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0127] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), the Internet, and blockchain networks.

[0128] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service ecosystem, addressing the shortcomings of traditional physical hosts and VPS (Virtual Private Server, or simply "VPS") services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0129] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0130] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method of calibrating a liquid level sensor, characterized by, include: Obtain the physical characteristics parameters of the heating device location, as well as the first volume information of the liquid detected by the liquid level detection device; Based on the physical characteristics parameters of the location of the heating device, second volume information is determined to indicate when the liquid is located at the location of the heating device, including: Determine whether there is liquid at the location of the heating device based on the physical characteristics parameters of the location of the heating device; If there is liquid at the location of the heating device, obtain preset liquid volume information; The preset liquid volume information is determined as a second volume information used to indicate the position of the liquid when it is located in the heating device; Calibrate the first volume information based on the second volume information, including: Calculate the absolute value of the difference between the second volume information and the first volume information; If the absolute value of the difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold, the first volume information is adjusted to the second volume information.

2. The calibration method of a liquid level sensor according to claim 1, characterized by, The physical property parameters include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

3. The method of calibrating a liquid level sensor according to claim 2, wherein, The process of obtaining the physical characteristic parameters of the location of the heating device includes: The physical characteristic parameters of the heating device location are acquired through a target sensor; the target sensor includes at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

4. The calibration method for the liquid level sensor according to claim 3, characterized in that, The target sensor is installed in combination with the thermistor of the heating device, or is placed on the rubber ring of the heating device.

5. A calibration device for a liquid level sensor, characterized in that, include: The data acquisition module is used to acquire the physical characteristic parameters of the heating device location, as well as the first volume information of the liquid detected by the liquid level detection device. The determining module is used to determine second volume information indicating when the liquid is located at the position of the heating device, based on the physical characteristic parameters of the position of the heating device. A calibration module is used to calibrate the first volume information based on the second volume information; The determining module includes: The first determining unit is used to determine whether there is liquid at the location of the heating device based on the physical characteristic parameters of the location of the heating device; The acquisition unit is used to acquire preset liquid volume information when there is liquid at the location of the heating device; The second determining unit is used to determine the preset liquid volume information as second volume information for indicating the position of the liquid when it is located in the heating device; The calibration module includes: The calculation unit is used to calculate the absolute value of the difference between the second volume information and the first volume information; The calibration unit is used to adjust the first volume information to the second volume information when the absolute value of the difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold.

6. The calibration device for the liquid level sensor according to claim 5, characterized in that, The physical property parameters include at least one of electrical conductivity, dielectric constant, refractive index of light, and density.

7. The calibration device for the liquid level sensor according to claim 6, characterized in that, The data acquisition module is specifically used for: The physical characteristic parameters of the heating device location are acquired through a target sensor; the target sensor includes at least one of a conductivity sensor, a dielectric constant sensor, a refractive index sensor, and a density sensor.

8. The calibration device for the liquid level sensor according to claim 7, characterized in that, The target sensor is installed in combination with the thermistor of the heating device, or is placed on the rubber ring of the heating device.

9. A clothing washing device, characterized in that, The calibration device includes the liquid level sensor as described in any one of claims 5 to 8.

10. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the calibration device method for the liquid level sensor as described in any one of claims 1 to 4.

11. A storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform a calibration apparatus method for a level sensor as described in any one of claims 1 to 4.

12. A computer program product comprising a computer program that, when executed by a processor, implements a calibration device method for a level sensor as described in any one of claims 1 to 4.

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