A water level monitoring method, device, computer equipment and dishwasher

Abstract

The application provides a water level monitoring method, device, computer equipment and dishwasher, the method comprises: obtaining a noise spectrogram of a washing pump of a target dishwasher during operation; calculating the similarity between the noise spectrogram and a pre-stored standard spectrogram; if the similarity is less than a pre-stored similarity threshold, water is added to the dishwasher. The method provided by the application uses a noise sensor to detect the working noise of the washing pump to replace the water level pressure switch to monitor the water level in the dishwasher, so that the water level monitoring of the dishwasher can be effectively realized while simplifying the assembly process of the whole machine.

Description

Technical Field

[0001] This application relates to the field of dishwasher technology, and in particular to a water level monitoring method, device, computer equipment, and dishwasher. Background Technology

[0002] With the improvement of people's living standards, dishwashers have become increasingly common in households in recent years. The operation of a dishwasher requires water level detection to prevent damage such as the heating element burning out during washing. Current dishwashers typically use water level pressure switches to monitor the water level inside the machine. However, these switches require a specially designed sealed cavity and a flexible hose to connect them, resulting in a complex structure, cumbersome assembly, and high cost. Summary of the Invention

[0003] To address the existing difficulties in monitoring water levels in dishwashers, this application provides a water level monitoring method, device, computer equipment, and dishwasher that can effectively monitor water levels in dishwashers while simplifying the overall assembly process.

[0004] On the one hand, a water level monitoring method is provided, the method comprising:

[0005] Obtain the noise spectrum of the washing pump during the operation of the target dishwasher;

[0006] Calculate the similarity between the noise spectrogram and the pre-stored standard spectrogram;

[0007] If the similarity is less than a pre-stored similarity threshold, then the dishwasher is refilled with water.

[0008] In some embodiments, obtaining the noise spectrum of the dishwasher's washing pump during operation includes:

[0009] Obtain the raw noise data of the washing pump during the operation of the target dishwasher;

[0010] The noise spectrogram is generated based on the original noise data.

[0011] In some embodiments, the step of adding water to the target dishwasher if the similarity is less than a pre-stored similarity threshold includes:

[0012] If the similarity is less than a pre-stored similarity threshold, then the noise volume data is calculated based on the noise spectrogram;

[0013] Based on the noise volume data and the pre-stored correspondence between volume and water replenishment amount, the water replenishment amount of the target dishwasher is determined;

[0014] The target dishwasher is replenished with water based on the stated amount of water replenishment.

[0015] In some embodiments, after replenishing the target dishwasher with water, the method further includes:

[0016] Record the number of times water is added during the current dishwashing process;

[0017] If the number of water replenishment attempts exceeds the pre-stored threshold, the target dishwasher will be stopped and an alarm will be triggered.

[0018] In some embodiments, after calculating the similarity between the noise spectrogram and a pre-stored standard spectrogram, the method further includes:

[0019] If the similarity is greater than or equal to a pre-stored similarity threshold, the steps of obtaining the noise spectrogram of the washing pump during the operation of the target dishwasher and calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram are executed periodically.

[0020] In some embodiments, the method further includes:

[0021] The standard acoustic spectrum was constructed based on the experimental dishwasher; the experimental dishwasher is the same model as the target dishwasher;

[0022] The standard spectrograms include those of the experimental dishwasher under different washing programs, different loads, and different power levels.

[0023] On the other hand, a water level monitoring device is provided, the device comprising:

[0024] The spectrogram acquisition module is used to acquire the noise spectrogram of the washing pump during the operation of the target dishwasher;

[0025] A similarity calculation module is used to calculate the similarity between the noise spectrogram and a pre-stored standard spectrogram;

[0026] A water replenishment control module is used to replenish water for the dishwasher if the similarity is less than a pre-stored similarity threshold.

[0027] In some embodiments, the spectrogram acquisition module is specifically used for:

[0028] Obtain the raw noise data of the washing pump during the operation of the target dishwasher;

[0029] The noise spectrogram is generated based on the original noise data.

[0030] In some embodiments, the water replenishment control module is specifically used for:

[0031] If the similarity is less than a pre-stored similarity threshold, then the noise volume data is calculated based on the noise spectrogram.

[0032] Based on the noise volume data and the pre-stored correspondence between volume and water replenishment amount, the water replenishment amount of the target dishwasher is determined;

[0033] The target dishwasher is replenished with water based on the stated amount of water replenishment.

[0034] In some embodiments, the apparatus further includes an alarm module for:

[0035] Record the number of times water is added during the current dishwashing process;

[0036] If the number of water replenishment attempts exceeds the pre-stored threshold, the target dishwasher will be stopped and an alarm will be triggered.

[0037] In some embodiments, the device is further configured to:

[0038] If the similarity is greater than or equal to a pre-stored similarity threshold, the steps of obtaining the noise spectrogram of the washing pump during the operation of the target dishwasher and calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram are executed periodically.

[0039] In some embodiments, the apparatus further includes a standard spectrogram acquisition module, configured to:

[0040] The standard acoustic spectrum was constructed based on the experimental dishwasher; the experimental dishwasher is the same model as the target dishwasher;

[0041] The standard spectrograms include those of the experimental dishwasher under different washing programs, different loads, and different power levels.

[0042] On the other hand, a computer device is provided, which includes a processor and a memory. The memory stores at least one instruction, at least one program, code set, or instruction set. The processor can load and execute at least one instruction, at least one program, code set, or instruction set to implement the water level monitoring method provided in the above-mentioned embodiments.

[0043] On the other hand, a dishwasher is provided, including a noise sensor and a computer device as described above;

[0044] The noise sensor is mounted on the dishwasher's wash pump motor bracket.

[0045] On the other hand, a computer-readable storage medium is provided, which stores at least one instruction, at least one program, code set, or instruction set. A processor can load and execute at least one instruction, at least one program, code set, or instruction set to implement the water level monitoring method provided in the embodiments of this application.

[0046] On the other hand, a computer program product or computer program is provided, which includes computer program instructions stored in a computer-readable storage medium. A processor reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the water level monitoring methods described in the above embodiments.

[0047] The beneficial effects of the technical solution provided in this application include at least the following: This invention provides a water level monitoring method, device, computer equipment, and dishwasher. The method includes acquiring a noise spectrum diagram of the washing pump during the operation of the target dishwasher; calculating the similarity between the noise spectrum diagram and a pre-stored standard spectrum diagram; and if the similarity is less than a pre-stored similarity threshold, then adding water to the dishwasher. The method provided by this invention uses a noise sensor to detect the operating noise of the washing pump to replace a water level pressure switch in monitoring the water level inside the dishwasher, effectively achieving water level monitoring of the dishwasher while simplifying the overall assembly process. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A schematic diagram illustrating the implementation flow of a water level monitoring method provided in an exemplary embodiment of this application is shown.

[0050] Figure 2 This illustration shows another implementation flow diagram of a water level monitoring method provided in an exemplary embodiment of this application;

[0051] Figure 3 This application shows a structural diagram of a water level monitoring device provided in an exemplary embodiment;

[0052] Figure 4 This illustration shows a schematic diagram of the structure of a computer device corresponding to a water level monitoring method provided in an exemplary embodiment of this application;

[0053] Figure 5 A schematic diagram of a dishwasher structure corresponding to a water level monitoring method provided in an exemplary embodiment of this application is shown. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0055] The water level monitoring method provided in this application can effectively monitor the water level of a dishwasher while simplifying the overall assembly process.

[0056] Example 1

[0057] Figure 1 The diagram illustrates the implementation flow of a water level monitoring method provided by an embodiment of the present invention.

[0058] See Figure 1 The water level monitoring method provided in this embodiment of the invention may include steps 101 to 103.

[0059] Step 101: Obtain the noise spectrum of the washing pump during the operation of the target dishwasher.

[0060] In some embodiments, the dishwasher starts running and the water inlet solenoid valve opens to achieve the water intake amount set for the current washing program of the dishwasher.

[0061] After the water intake is complete, the washing pump starts running, and the noise sensor installed on the washing pump continuously monitors the noise data of the washing pump during operation.

[0062] In some embodiments, step 101 includes:

[0063] Obtain the raw noise data of the washing pump during the operation of the target dishwasher;

[0064] The noise spectrogram is generated based on the original noise data.

[0065] Optionally, the data analysis chip generates a spectrogram based on the raw noise data.

[0066] Step 102: Calculate the similarity between the noise spectrogram and the pre-stored standard spectrogram.

[0067] Specifically, the current spectrogram is compared with a pre-stored standard spectrogram, and the similarity is calculated. Based on the similarity, the system determines whether the dishwasher is operating normally and whether the washing pump is short of water.

[0068] The aforementioned standard acoustic spectrum data was obtained from an experimental dishwasher of the same model as the target dishwasher during operation experiments, and the standard acoustic spectrum includes the acoustic spectrum of the dishwasher under different operating modes, different speeds, different loads, different power, and different washing processes.

[0069] Correspondingly, the similarity calculation involves comparing the current spectrogram with the corresponding parts of the standard spectrogram, such as the current operating mode, current current state, and current program.

[0070] In some embodiments, the method further includes the following after step 102:

[0071] If the similarity is greater than or equal to a pre-stored similarity threshold, the steps of obtaining the noise spectrogram of the washing pump during the operation of the target dishwasher and calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram are executed periodically.

[0072] Specifically, if the similarity between the current spectrogram and the standard spectrogram is greater than or equal to the pre-stored similarity threshold, the dishwasher is judged to be operating normally. The dishwasher is then kept running, and noise data is re-acquired and detected every pre-stored time interval t.

[0073] Step 103: If the similarity is less than the pre-stored similarity threshold, then add water to the dishwasher.

[0074] In some embodiments, step 103 includes:

[0075] If the similarity is less than a pre-stored similarity threshold, then the noise volume data is calculated based on the noise spectrogram.

[0076] Based on the noise volume data and the pre-stored correspondence between volume and water replenishment amount, the water replenishment amount of the target dishwasher is determined;

[0077] The target dishwasher is replenished with water based on the stated amount of water replenishment.

[0078] If the similarity between the current spectrogram and the standard spectrogram is less than the pre-stored similarity threshold, the dishwasher is judged to be malfunctioning.

[0079] Furthermore, when the similarity between the current spectrogram and the standard spectrogram is less than a pre-stored similarity threshold, the average volume data of the washing pump during the abnormal operation phase is further calculated using the spectrogram.

[0080] Water is added to the washing pump based on the difference between the average volume data and the standard volume data, as well as the pre-stored correspondence between the volume difference and the water replenishment amount.

[0081] After refilling the wash pump with water, continue the dishwasher's wash program.

[0082] In some embodiments, after step 103, the method further includes:

[0083] Record the number of times water is added during the current dishwashing process;

[0084] If the number of water replenishment attempts exceeds the pre-stored threshold, the target dishwasher will be stopped and an alarm will be triggered.

[0085] In some embodiments, if water is added more than three times during a single dishwashing operation, it indicates that the dishwasher is malfunctioning, an alarm is issued to the user, and the dishwasher stops operating.

[0086] In some embodiments, the method further includes:

[0087] The standard acoustic spectrum was constructed based on the experimental dishwasher; the experimental dishwasher is the same model as the target dishwasher;

[0088] The standard spectrograms include those of the experimental dishwasher under different washing programs, different loads, and different power levels.

[0089] Furthermore, the method also includes constructing a correspondence between noise volume data and water replenishment amount based on experimental dishwashers.

[0090] The noise level of a dishwasher's wash pump varies under different power and load conditions during actual operation. When the dishwasher is working normally, the noise level of the wash pump remains within a reasonable range, and the sound spectrum characteristics are consistent.

[0091] If the dishwasher's washing pump is short of water, the noise level will not match the preset noise range and will be outside the normal operating range, indicating that the dishwasher is in an abnormal state.

[0092] In a specific example, if the dishwasher cannot operate at full capacity due to a lack of water in the washing pump, the noise level will be higher than normal. Therefore, when the noise level of the washing pump exceeds the normal operating noise threshold, it indicates that the washing pump is experiencing an abnormality such as a lack of water.

[0093] Furthermore, if the dishwasher's washing pump is found to be short of water based on noise, corresponding measures can be taken, such as replenishing water, issuing an alarm, or stopping operation.

[0094] To address the issues of high environmental requirements and cumbersome assembly processes associated with existing dishwashers where water level pressure switches detect water levels, the method provided in this invention uses a noise sensor to detect the operating noise of the washing pump, replacing the water level pressure switch in monitoring the water level inside the dishwasher. This effectively achieves water level monitoring in the dishwasher while simplifying the overall assembly process.

[0095] Example 2

[0096] Figure 2 This diagram illustrates another implementation flow of the water level monitoring method provided in this embodiment of the invention.

[0097] See Figure 2 In a specific example, the water level monitoring method provided by this embodiment of the invention is implemented as follows.

[0098] First, after the dishwasher starts, the dishwasher's water inlet solenoid valve opens, completing the set water intake.

[0099] During dishwasher operation, noise sensors collect noise information and generate a spectrogram based on a data analysis chip to determine the similarity between the spectrogram and a pre-stored standard spectrogram.

[0100] If the acoustic spectrum similarity is greater than or equal to the pre-stored similarity threshold S, the dishwasher will be controlled to operate normally.

[0101] Furthermore, during normal operation of the dishwasher, at intervals t, the steps of collecting noise information using a noise sensor and generating a spectrogram based on a data analysis chip and determining the similarity of the spectrograms are executed cyclically.

[0102] If the similarity of the spectrograms is less than the similarity threshold S, the dishwasher is determined to be short of water.

[0103] When the dishwasher is low on water, the average noise level difference in the acoustic spectrum is calculated, and water is added based on the difference.

[0104] On the other hand, the number of times the dishwasher needs to replenish water is recorded. If the number of water replenishments is less than or equal to three, the washing program continues. If the number of water replenishments is greater than three, an alarm is triggered and the dishwasher is stopped.

[0105] In summary, the water level monitoring method provided by the embodiments of the present invention can use a noise sensor to detect the working noise of the washing pump to replace the water level pressure switch to monitor the water level in the dishwasher, and can effectively realize water level monitoring of the dishwasher while simplifying the overall assembly process.

[0106] Example 3

[0107] Figure 3 A schematic diagram of the water level monitoring device provided in an embodiment of the present invention is shown.

[0108] See Figure 3 The water level monitoring device provided in this embodiment of the invention may include:

[0109] The acoustic spectrum acquisition module 201 is used to acquire the noise acoustic spectrum of the washing pump during the operation of the target dishwasher;

[0110] The similarity calculation module 202 is used to calculate the similarity between the noise spectrogram and the pre-stored standard spectrogram;

[0111] The water replenishment control module 203 is used to replenish water for the dishwasher if the similarity is less than a pre-stored similarity threshold.

[0112] In some embodiments, the spectrogram acquisition module 201 is specifically used for:

[0113] Obtain the raw noise data of the washing pump during the operation of the target dishwasher;

[0114] The noise spectrogram is generated based on the original noise data.

[0115] In some embodiments, the water replenishment control module 203 is specifically used for:

[0116] If the similarity is less than a pre-stored similarity threshold, then the noise volume data is calculated based on the noise spectrogram.

[0117] Based on the noise volume data and the pre-stored correspondence between volume and water replenishment amount, the water replenishment amount of the target dishwasher is determined;

[0118] The target dishwasher is replenished with water based on the stated amount of water replenishment.

[0119] In some embodiments, the apparatus further includes an alarm module for:

[0120] Record the number of times water is added during the current dishwashing process;

[0121] If the number of water replenishment attempts exceeds the pre-stored threshold, the target dishwasher will be stopped and an alarm will be triggered.

[0122] In some embodiments, the device is further configured to:

[0123] If the similarity is greater than or equal to a pre-stored similarity threshold, the steps of obtaining the noise spectrogram of the washing pump during the operation of the target dishwasher and calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram are executed periodically.

[0124] In some embodiments, the apparatus further includes a standard spectrogram acquisition module, configured to:

[0125] The standard acoustic spectrum was constructed based on the experimental dishwasher; the experimental dishwasher is the same model as the target dishwasher;

[0126] The standard spectrograms include those of the experimental dishwasher under different washing programs, different loads, and different power levels.

[0127] In summary, the water level monitoring device provided in this embodiment of the invention can use a noise sensor to detect the working noise of the washing pump to replace the water level pressure switch in monitoring the water level in the dishwasher, and can effectively realize water level monitoring of the dishwasher while simplifying the overall assembly process.

[0128] Example 4

[0129] Figure 4 This application shows a schematic diagram of the structure of a computer device provided in an exemplary embodiment, the computer device comprising:

[0130] The processor 301 includes one or more processing cores. The processor 301 executes various functional applications and data processing by running software programs and modules.

[0131] The receiver 302 and transmitter 303 can be implemented as a communication component, which can be a communication chip. Optionally, this communication component can include signal transmission functionality. That is, the transmitter 303 can be used to transmit control signals to the image acquisition device and the scanning device, and the receiver 302 can be used to receive corresponding feedback commands.

[0132] The memory 304 is connected to the processor 301 via the bus 305.

[0133] The memory 304 can be used to store at least one instruction, and the processor 301 is used to execute the at least one instruction to implement steps 101 to 102 in the above-described water level monitoring method embodiment.

[0134] Those skilled in the art will understand that Figure 4 This is merely an example of a computer device and does not constitute a limitation on the computer device. It may include more or fewer components than shown, or combine certain components, or different components. For example, the computer device may also include network access devices, etc.

[0135] The processor 301 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0136] The memory 304 can be an internal storage unit of the computer device, such as a hard drive or RAM. The memory 304 can also be an external storage device of the computer device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, the memory 304 can include both internal and external storage units. The memory 304 is used to store the computer program and other programs and data required by the terminal device. The memory 304 can also be used to temporarily store data that has been output or will be output.

[0137] Example 5

[0138] This application also provides a dishwasher, including a noise sensor and the computer device described above; the noise sensor is mounted on the dishwasher's wash pump motor bracket.

[0139] Figure 5 A schematic diagram of the structure of the dishwasher washing pump and noise sensor provided in an embodiment of the present invention is shown.

[0140] See Figure 5 The noise sensor is installed on the motor bracket of the dishwasher's washing pump. Since the noise emitted by the dishwasher's washing pump when it is working mainly comes from the motor rotor of the washing pump, the installation angle of the noise sensor is such that the noise collection direction is pointed towards the motor rotor of the washing pump.

[0141] Optionally, the noise sensor is a directional noise sensor, which collects noise in the direction of the wash pump. Since the inside of the dishwasher is a relatively sealed cavity, the noise emitted by the wash pump when it is working can easily echo inside the cavity, and a directional noise sensor can avoid repeatedly collecting noise data.

[0142] The dishwasher provided in this embodiment of the invention obtains noise information during the operation of the washing pump by setting a noise sensor, and then judges whether the noise is normal or not based on the sound spectrum, and effectively replenishes water. It can effectively detect the water level of the dishwasher and fully ensure the normal operation of the dishwasher.

[0143] Example 6

[0144] This application also provides a computer-readable storage medium storing at least one instruction, at least one program, code set, or instruction set, which can be loaded and executed by a processor to implement the above-described water level monitoring method.

[0145] Optionally, the computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), solid-state drives (SSDs), or optical discs, etc. The random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM).

[0146] Example 7

[0147] This application also provides a computer program product or computer program that includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the water level monitoring methods described in the above embodiments.

[0148] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the implementation.

[0149] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0150] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0151] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0152] The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include any entity or device capable of carrying the computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0153] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A water level monitoring method, characterized in that, The method includes: Obtain the noise spectrum of the washing pump during the operation of the target dishwasher; Calculate the similarity between the noise spectrogram and the pre-stored standard spectrogram; If the similarity is less than the pre-stored similarity threshold, then the dishwasher is refilled with water; The step of obtaining the noise spectrum of the washing pump during the operation of the target dishwasher includes: Obtain the raw noise data of the washing pump during the operation of the target dishwasher; The noise spectrogram is generated based on the original noise data; The method further includes: The standard acoustic spectrum was constructed based on the experimental dishwasher; the experimental dishwasher is the same model as the target dishwasher; The standard spectrograms include those of the experimental dishwasher under different washing programs, different loads, and different power levels.

2. The method according to claim 1, characterized in that, If the similarity is less than a pre-stored similarity threshold, then water is added to the target dishwasher, including: If the similarity is less than a pre-stored similarity threshold, then the noise volume data is calculated based on the noise spectrogram. Based on the noise volume data and the pre-stored correspondence between volume and water replenishment amount, the water replenishment amount of the target dishwasher is determined; The target dishwasher is replenished with water based on the stated amount of water replenishment.

3. The method according to claim 2, characterized in that, After replenishing water for the target dishwasher, the method further includes: Record the number of times water is added during the current dishwashing process; If the number of water replenishment attempts exceeds the pre-stored threshold, the target dishwasher will be stopped and an alarm will be triggered.

4. The method according to claim 1, characterized in that, After calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram, the method further includes: If the similarity is greater than or equal to a pre-stored similarity threshold, the steps of obtaining the noise spectrogram of the washing pump during the operation of the target dishwasher and calculating the similarity between the noise spectrogram and the pre-stored standard spectrogram are executed periodically.

5. A water level monitoring device for implementing the water level monitoring method according to any one of claims 1-4, characterized in that, The device includes: The spectrogram acquisition module is used to acquire the noise spectrogram of the washing pump during the operation of the target dishwasher; A similarity calculation module is used to calculate the similarity between the noise spectrogram and a pre-stored standard spectrogram; A water replenishment control module is used to replenish water for the dishwasher if the similarity is less than a pre-stored similarity threshold.

6. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction, at least one program, code set, or instruction set, the at least one instruction, at least one program, code set, or instruction set being loaded and executed by the processor to implement the water level monitoring method as described in any one of claims 1 to 4.

7. A dishwasher, characterized in that, Includes a noise sensor and the computer device as described in claim 6; The noise sensor is mounted on the dishwasher's wash pump motor bracket.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction, at least one program, code set, or instruction set, wherein the at least one instruction, at least one program, code set, or instruction set is loaded and executed by a processor to implement the water level monitoring method as described in any one of claims 1 to 4.

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