WO2022213669A1

WO2022213669A1 - Control method for operating frequency of compressor, apparatus, air conditioner, storage medium, and product

Info

Publication number: WO2022213669A1
Application number: PCT/CN2021/140861
Authority: WO
Inventors: 张飞; 陆建松; 刘凌华
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-04-07
Filing date: 2021-12-23
Publication date: 2022-10-13
Also published as: CN113091283B; CN113091283A

Abstract

A control method for the operating frequency of a compressor, an apparatus, an air conditioner, a storage medium, and a product. Sound signals emitted by a compressor can be captured when the compressor is operating at different operating frequencies, and by means of performing frequency spectrum analysis on the sound signals at different frequencies, a resonant abnormal sound signal in the sound signals can be determined via integrating amplitude and bandwidth; an operating frequency prone to causing resonance during operation of the compressor can thereby be determined, and the operating frequency prone to causing resonance is consequently set as "blacklisted" when the compressor is operating, i.e. the compressor is controlled to not operate at the operating frequency prone to causing resonance, thus preventing resonance and reducing the operating noise of the compressor.

Description

Compressor operating frequency control method, device, air conditioner, storage medium and product

This application claims the priority of the Chinese patent application with the application number 202110371833.9 and the application name "Compressor operating frequency control method, device, air conditioner, storage medium and product" filed with the China Patent Office on April 7, 2021, all of which are The contents are incorporated herein by reference.

technical field

The present application relates to the technical field of air conditioners, and in particular, to a compressor operating frequency control method, device, air conditioner, storage medium and product.

Background technique

An air conditioner is a common household appliance that can cool or heat for a long time to ensure a constant and comfortable indoor temperature.

The structure of the air conditioner usually includes a compressor. The compressor plays the role of compressing and driving the refrigerant in the refrigerant circuit of the air conditioner. The compressor is generally installed in the outdoor unit. The compressor extracts the refrigerant from the low pressure area, compresses it, and sends it to the high pressure area. The cooling condenses, which emits heat into the air through the fins, and the refrigerant also changes from a gaseous state to a liquid state, and the pressure rises.

As the production cost requirements of air conditioners are getting higher and higher, and the requirements for manufacturing refinement are becoming more and more stringent, the trend of miniaturization and high frequency of compressors in air conditioners is becoming more and more obvious. However, the compressor is prone to beat-frequency resonance noise during high-frequency operation, resulting in a louder working noise of the air conditioner.

SUMMARY OF THE INVENTION

The present application provides a compressor operating frequency control method, device, air conditioner, storage medium and product to solve the problems existing in the prior art.

In a first aspect, the present application provides a compressor operating frequency control method, comprising:

respectively acquiring the corresponding sound signals of the compressor under at least two operating frequencies;

Determine the resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;

Determine the resonance operating frequency corresponding to the resonance abnormal sound signal;

When the operating frequency of the compressor is the resonant operating frequency, the operating frequency of the compressor is adjusted to another frequency different from the resonant operating frequency.

In some embodiments, determining the resonance abnormal sound signal according to the amplitude and bandwidth of the sound signal includes:

Fourier transform is performed on the sound signals under different operating frequencies to obtain sound spectrum signals corresponding to different operating frequencies;

The resonance abnormal sound signal is determined according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal.

In some embodiments, determining the resonant abnormal sound signal according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal includes:

When there is an abnormal sound segment with a signal amplitude greater than a preset amplitude and a signal bandwidth greater than a first preset bandwidth in the sound spectrum signal, it is determined that the sound spectrum signal is a resonance abnormal sound signal.

When there is an iso-tone segment whose signal amplitude is greater than the preset amplitude and the signal bandwidth is greater than the first preset bandwidth in the sound spectrum signal, it is determined whether the signal bandwidth of the iso-tone segment is greater than the second preset bandwidth, and the the second preset bandwidth is greater than the first preset bandwidth;

If the signal bandwidth of the abnormal sound segment is greater than the second preset bandwidth, it is determined that the sound spectrum signal is a resonance abnormal sound signal.

In some embodiments, it also includes:

If the signal bandwidth of the heterophonic segment is less than or equal to the second preset bandwidth, determine whether there is a signal amplitude greater than the preset amplitude and the signal bandwidth greater than the first preset bandwidth in the adjacent sound spectrum signals corresponding to the neighboring frequencies. Set the bandwidth of the heterophonic segment, wherein, the adjacent frequencies include at least a pair of front and rear adjacent frequency points of the operating frequency corresponding to the sound spectrum signal;

If it exists, it is determined that the sound spectrum signal is a resonance abnormal sound signal.

In some embodiments, the value range of the preset amplitude value is greater than or equal to 52dB;

The value range of the first preset bandwidth is greater than or equal to 3 Hz and less than 10 Hz;

The value range of the second preset bandwidth is greater than or equal to 10 Hz.

In a second aspect, the present application provides a compressor operating frequency control device, comprising:

a signal acquisition module, used for respectively acquiring the corresponding sound signals of the compressor under at least two operating frequencies;

A signal determination module, for determining a resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;

a frequency determination module for determining the resonance operating frequency corresponding to the resonance abnormal sound signal;

The frequency control module is configured to adjust the working frequency of the compressor to another frequency different from the resonance working frequency when the working frequency of the compressor is the resonance working frequency.

In a third aspect, the present application provides an air conditioner, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implements the above-mentioned compression when executing the program Machine working frequency control method.

In a fourth aspect, the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement the above-mentioned compressor operating frequency control method when executed by a processor. .

In a fifth aspect, the present application provides a computer program product, including a computer program, which implements the above-mentioned compressor operating frequency control method when the computer program is executed by a processor.

The compressor operating frequency control method, device, air conditioner, storage medium and product provided by the present application can collect sound signals from the compressor when the compressor operates at different operating frequencies. The spectrum analysis of the signal, combined with the amplitude and bandwidth, can determine the resonance abnormal sound signal in the sound signal, so as to determine the working frequency of the compressor that is prone to resonance during the working process. The working frequency of resonance is set to "blacklist", that is, the compressor is controlled not to work at the working frequency that is prone to resonance, so as to avoid resonance and reduce the working noise of the compressor.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

1 is a schematic diagram of a compressor operating frequency control method provided by an embodiment of the present application;

2 is a schematic diagram of a sound spectrum signal provided by an embodiment of the present application;

3 is another schematic diagram of a sound spectrum signal provided by an embodiment of the present application;

4 is another schematic diagram of a sound spectrum signal provided by an embodiment of the present application;

5 is a schematic diagram of a compressor operating frequency control device provided by an embodiment of the application;

FIG. 6 is a schematic structural diagram of an air conditioner provided by an embodiment of the present application.

From the foregoing drawings, there have been shown specific embodiments of the present disclosure, which will be described in greater detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of this application, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

Depending on the context, the words "if", "if" as used herein may be interpreted as "at" or "when" or "in response to determining" or "in response to detecting". Similarly, the phrases "if determined" or "if detected (the stated condition or event)" can be interpreted as "when determined" or "in response to determining" or "when detected (the stated condition or event)," depending on the context )" or "in response to detection (a stated condition or event)".

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a commodity or system comprising a list of elements includes not only those elements, but also includes not explicitly listed other elements, or elements inherent to the commodity or system. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the article or system that includes the element.

The compressor operating frequency control method, device, air conditioner, storage medium and product provided by the present application aim to solve the above technical problems in the prior art.

The main idea of the solution of the present application is: in the process of the compressor working at different operating frequencies, the sound signal emitted by the compressor can be collected, and by performing spectrum analysis on the sound signal at different frequencies, combined with the amplitude and bandwidth, it can be Determine the resonant abnormal sound signal in the sound signal, so as to determine the working frequency that is prone to resonance during the working process of the compressor, and then, during the working process of the compressor, set the working frequency that is prone to resonance as a "blacklist", that is, Control the compressor not to work at the working frequency that is prone to resonance, so as to avoid resonance and reduce the working noise of the compressor.

The technical solutions of the present application and how the technical solutions of the present application solve the above-mentioned technical problems will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

It can be understood that the processing steps of the compressor operating frequency control method in the present application may be implemented by a controller that controls the compressor operating frequency, such as a processor that controls the interior of the air conditioner.

In some embodiments, a method for controlling the operating frequency of a compressor is provided. FIG. 1 is a schematic diagram of the method for controlling the operating frequency of a compressor provided by an embodiment of the present application. As shown in FIG. 1 , the method is implemented by a processor for explanation. The method mainly includes the following steps:

S100, respectively acquiring corresponding sound signals of the compressor under at least two operating frequencies;

The processor may collect and acquire sound signals emitted by the compressor during operation through a sound collection device, and the sound collection device may be, for example, a microphone or the like.

Specifically, the sound collection device can be installed near the compressor. For example, when the compressor is installed in the external machine, the sound collection device can be installed in the external machine, and the sound collection device is communicatively connected to the processor, so that the sound collection device The sound signal emitted by the compressor can be collected in real time and sent to the processor, so that the processor can process according to the sound signal collected by the sound collecting device.

S200, according to the amplitude and bandwidth of the sound signal, determine the resonance abnormal sound signal;

For a resonant abnormal sound signal, that is, a resonant noise signal, it usually has the characteristics of a large amplitude of the sound signal. Therefore, the amplitude of the sound signal can be used to determine whether the sound signal is a resonant abnormal sound signal. In addition, in order to improve the accuracy of the determination result of the abnormal resonance sound signal, this embodiment further determines the abnormal sound resonance signal in combination with the bandwidth of the sound signal.

Specifically, when the amplitude of the sound signal is large, if the bandwidth with the large amplitude is small, it means that the continuous energy of the noise is low and the noise transmission is not obvious. At this time, it is of little significance to avoid the operating frequency. However, if the bandwidth with a larger amplitude is larger, it means that the continuous energy of the noise is higher, and the noise transmission is more obvious. At this time, it is necessary to avoid the operating frequency.

Therefore, in this embodiment, the resonance abnormal sound signal is determined in combination with the amplitude and the bandwidth of the sound signal, so that the accuracy of the determination result of the resonance abnormal sound signal can be improved.

S300, determine the resonance operating frequency corresponding to the resonance abnormal sound signal;

After determining the abnormal resonance sound signal, the processor can determine the resonance operating frequency corresponding to the abnormal resonance sound signal based on the corresponding relationship between the abnormal resonance sound signal and the operating frequency.

S400. When the working frequency of the compressor is the resonance working frequency, adjust the working frequency of the compressor to another frequency different from the resonance working frequency.

After determining the resonance working frequency corresponding to the resonance abnormal sound signal, the processor can save the resonance working frequency locally, and adjust the working frequency of the compressor according to the resonance working frequency.

Specifically, when the operating frequency of the compressor is not the resonant operating frequency, the processor does not adjust the operating frequency of the compressor; when the operating frequency of the compressor is the resonant operating frequency, the processor adjusts the operating frequency of the compressor to Resonance at other frequencies different from the operating frequency, thus avoiding secondary resonances.

This embodiment provides a method for controlling the operating frequency of a compressor. During the process of the compressor operating at different operating frequencies, the sound signals emitted by the compressor can be collected. The value and bandwidth can determine the resonance abnormal sound signal in the sound signal, so as to determine the working frequency that is prone to resonance during the compressor operation. "Blacklist", that is, control the compressor not to work at the operating frequency that is prone to resonance, so as to avoid resonance and reduce the working noise of the compressor.

In some embodiments, the resonant abnormal sound signal is determined according to the amplitude and bandwidth of the sound signal, including:

S210, performing Fourier transform on sound signals at different working frequencies to obtain sound spectrum signals corresponding to different working frequencies;

S220. Determine a resonance abnormal sound signal according to the signal amplitude, signal bandwidth, preset amplitude, and preset bandwidth of the sound spectrum signal.

Specifically, when determining the resonant abnormal sound signal, the processor first performs Fourier transform on the sound signal at different working frequencies, so as to transform the sound signal from a time domain signal into a frequency domain signal, and obtain the sound spectrum corresponding to different working frequencies. Signal.

After obtaining the sound spectrum signals corresponding to different operating frequencies, the processor determines the resonance abnormal sound from the plurality of sound spectrum signals according to the signal amplitude and signal bandwidth of the sound spectrum signal, combined with the preset preset amplitude and preset bandwidth. Signal.

In some embodiments, after Fourier transform is performed on sound signals at different working frequencies to obtain sound spectrum signals corresponding to different working frequencies, the sound spectrum signals may also be filtered by a band-pass filter, for example, The band-pass filter can be set to allow sounds that can be heard by the human ear, such as 200Hz-10kHz, etc. Therefore, the band-pass filter can conveniently set the start and end points of the amplitude exceeding the standard, so as to determine the bandwidth.

In some embodiments, determining the resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound spectrum signal, including: S221. There is a signal amplitude in the sound spectrum signal that is greater than the preset amplitude value and the signal bandwidth is greater than the abnormal sound segment of the first preset bandwidth, it is determined that the sound spectrum signal is a resonance abnormal sound signal.

FIG. 2 is a schematic diagram of a sound spectrum signal provided by an embodiment of the present application. As shown in FIG. 2, it is a sound spectrum signal corresponding to a certain operating frequency of the compressor, wherein the abscissa represents the signal bandwidth (unit is Hz), and the ordinate represents the Signal amplitude (in dB).

Referring to FIG. 2, the preset amplitude is A0, the first preset bandwidth is bw1, and bw1 can be, for example, the width of the three cylinders in FIG. 2, then in the sound spectrum signal shown in FIG. The signal amplitudes are all greater than the preset amplitude A0, and the signal bandwidth is the width of four cylinders, that is, the signal bandwidth is greater than the first preset bandwidth bw1. Therefore, the frequency band in the dashed box in the figure is the abnormal audio frequency band, thus It can be determined that the sound spectrum signal shown in FIG. 2 is a resonance abnormal sound signal.

Optionally, the value range of the preset amplitude value A0 may specifically be greater than or equal to 52 dB; the value range of the first preset bandwidth bw1 may specifically be greater than or equal to 3 Hz.

After determining that the sound spectrum signal shown in FIG. 2 is a resonant abnormal sound signal, the processor can set the operating frequency corresponding to the sound spectrum signal shown in FIG. circumvent, thereby avoiding secondary resonance.

In some embodiments, the resonant abnormal sound signal is determined according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal, including:

S222. When there is an iso-tone segment with a signal amplitude greater than a preset amplitude and a signal bandwidth greater than the first preset bandwidth in the sound spectrum signal, determine whether the signal bandwidth of the iso-tone segment is greater than the second preset bandwidth, and the second preset Set the bandwidth to be greater than the first preset bandwidth;

S223. If the signal bandwidth of the abnormal sound segment is greater than the second preset bandwidth, determine that the sound spectrum signal is a resonance abnormal sound signal.

Specifically, in order to further improve the accuracy of the determination result of the resonance abnormal sound signal, in this embodiment, the processor determines that the sound spectrum signal has abnormal signal amplitude greater than the preset amplitude and the signal bandwidth is greater than the first preset bandwidth. In the audio segment, it is further combined with the second preset bandwidth to determine whether the sound spectrum signal is a resonant abnormal sound signal.

FIG. 3 is another schematic diagram of a sound spectrum signal provided by an embodiment of the present application. As shown in FIG. 3 , it is a sound spectrum signal corresponding to a certain operating frequency of the compressor.

Referring to FIG. 3 , the preset amplitude is A0, the first preset bandwidth is bw1, bw1 can be, for example, the width of the three cylinders in FIG. 3 , the second preset bandwidth is bw2, and bw2 can be, for example, five in FIG. 3 . The width of the column. Then in the sound spectrum signal shown in Figure 3, the signal amplitudes of the frequency bands in the dashed box are all greater than the preset amplitude A0, and the signal bandwidth is the width of six cylinders, that is, the signal bandwidth is greater than the second preset bandwidth bw2 , therefore, the frequency band in the dotted box in the figure is an abnormal sound frequency band, so it can be determined that the sound spectrum signal shown in FIG. 3 is a resonance abnormal sound signal.

Optionally, the value range of the preset amplitude A0 may specifically be greater than or equal to 52 dB; the value range of the first preset bandwidth bw1 may specifically be greater than or equal to 3 Hz and less than 10 Hz; The value range may specifically be greater than or equal to 10 Hz.

After determining that the sound spectrum signal shown in FIG. 3 is a resonant abnormal sound signal, the processor can set the operating frequency corresponding to the sound spectrum signal shown in FIG. circumvent, thereby avoiding secondary resonance.

In some embodiments, when there is an iso-tone segment with a signal amplitude greater than a preset amplitude and a signal bandwidth greater than the first preset bandwidth in the sound spectrum signal, it is determined whether the signal bandwidth of the iso-tone segment is greater than the second preset bandwidth ,Also includes:

S224. If the signal bandwidth of the iso-tone segment is less than or equal to the second preset bandwidth, determine whether there is a signal amplitude greater than the preset amplitude and the signal bandwidth greater than the first preset bandwidth in the adjacent sound spectrum signals corresponding to the neighboring frequencies The abnormal tone segment, wherein, adjacent frequencies include at least a pair of front and rear adjacent frequency points of the corresponding operating frequency of the sound spectrum signal;

S225. If there is, determine that the sound spectrum signal is a resonance abnormal sound signal.

Specifically, FIG. 4 is another schematic diagram of a sound spectrum signal provided by an embodiment of the present application. As shown in FIG. 4 , it is a sound spectrum signal corresponding to a certain operating frequency of the compressor.

Referring to FIG. 4 , the preset amplitude is A0, the first preset bandwidth is bw1, bw1 can be, for example, the width of the three cylinders in FIG. 4 , the second preset bandwidth is bw2, and bw2 can be, for example, five in FIG. 4 . The width of the column. Then in the sound spectrum signal shown in FIG. 4, the signal amplitudes of the frequency bands in the dashed box are all greater than the preset amplitude A0, in addition, the signal bandwidth is the width of four cylinders, that is, the signal bandwidth is greater than the first preset bandwidth bw1 , but smaller than the second preset bandwidth bw2, therefore, it is necessary to assist in determining whether the sound spectrum signal shown in FIG. 4 is a resonant abnormal sound signal according to adjacent sound spectrum signals of adjacent frequencies.

Specifically, the processor may determine at least a pair of front and rear adjacent frequency points of the working frequency corresponding to the sound spectrum signal, and acquire adjacent sound spectrum signals corresponding to the at least one pair of front and rear adjacent frequency points.

Optionally, at least a pair of front and rear adjacent frequency points of the working frequency corresponding to the sound spectrum signal may be determined by taking 1 Hz as an interval value. For example, if the operating frequency corresponding to the sound spectrum signal shown in FIG. 4 is 80 Hz, the at least one pair of front and rear adjacent frequency points may be 79 Hz and 91 Hz. Or, 78Hz, 79Hz, 91Hz, 92Hz, etc.

After the adjacent frequencies are determined, it is determined whether the adjacent sound spectrum signals corresponding to the adjacent frequencies all have hetero-tone segments whose signal amplitude is greater than the preset amplitude and whose signal bandwidth is greater than the first preset bandwidth. It is determined that the sound spectrum signal is a resonance abnormal sound signal; if there is no abnormal sound segment in the adjacent sound spectrum signals corresponding to all adjacent frequencies or some adjacent frequencies, it is determined that the sound spectrum signal is not a resonance abnormal sound signal.

After determining that the sound spectrum signal shown in FIG. 4 is a resonant abnormal sound signal, the processor can set the operating frequency corresponding to the sound spectrum signal shown in FIG. circumvent, thereby avoiding secondary resonance.

It should be understood that, although the steps in the flow charts in the above embodiments are sequentially displayed according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order and may be performed in other orders. Moreover, at least a part of the steps in the figure may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order is not necessarily sequential. Instead, it may be performed in turn or alternately with other steps or at least a portion of sub-steps or stages of other steps.

In some embodiments, a compressor operating frequency control device is provided, and FIG. 5 is a schematic diagram of the compressor operating frequency control device provided by the embodiment of the application. As shown in FIG. 5 , the device includes:

The signal acquisition module 100 is used to acquire the corresponding sound signals of the compressor under at least two operating frequencies respectively;

The signal determination module 200 is used for determining the resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;

The frequency determination module 300 is used for determining the resonance operating frequency corresponding to the resonance abnormal sound signal;

The frequency control module 400 is configured to adjust the operating frequency of the compressor to another frequency different from the resonant operating frequency when the operating frequency of the compressor is the resonant operating frequency.

For the specific limitation of the compressor operating frequency control device, reference may be made to the above limitation on the compressor operating frequency control method, which will not be repeated here. Each module in the above-mentioned compressor operating frequency control device can be implemented in whole or in part by software, hardware and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

The present application provides a compressor operating frequency control device. During the process of the compressor operating at different operating frequencies, the sound signal emitted by the compressor can be collected. and bandwidth, the resonant abnormal sound signal in the sound signal can be determined, so as to determine the working frequency that is prone to resonance during the operation of the compressor. List", that is, control the compressor not to work at the working frequency that is prone to resonance, so as to avoid resonance and reduce the working noise of the compressor.

In some embodiments, it also includes:

In some embodiments, an air conditioner is provided.

FIG. 6 is a schematic structural diagram of an air conditioner provided by an embodiment of the present application. As shown in FIG. 5 , the air conditioner includes a processor 111 , a memory 112 and a sound collection device 113 .

The memory 112 is used to store programs and data, and the processor 111 invokes the program stored in the memory to execute the technical solutions of any of the foregoing method embodiments.

In the above air conditioner, the memory and the processor are directly or indirectly electrically connected to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines, such as can be connected through a bus. The memory stores computer-executed instructions for implementing the data access control method, including at least one software function module that can be stored in the memory in the form of software or firmware, and the processor executes various software programs and modules by running the software programs and modules stored in the memory. Functional application and data processing.

The memory can be, but is not limited to, random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory, PROM), erasable only memory Read memory (Erasable Programmable Read-Only Memory, EPROM), Electrical Erasable Programmable Read-Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory is used to store the program, and the processor executes the program after receiving the execution instruction. Further, the software programs and modules in the above-mentioned memory may also include an operating system, which may include various software components and/or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may Intercommunicate with various hardware or software components to provide the operating environment for other software components.

The processor may be an integrated circuit chip with signal processing capability. The above-mentioned processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), and the like. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In some embodiments, a computer-readable storage medium is provided, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the steps of each method embodiment of the present application .

In some embodiments, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of each method embodiment of the present application.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium, When the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database or other medium used in the various embodiments provided in this application may include non-volatile and/or volatile memory. Nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Road (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the applications disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A compressor operating frequency control method, characterized in that, comprising:

respectively acquiring the corresponding sound signals of the compressor under at least two operating frequencies;

Determine the resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;

Determine the resonance operating frequency corresponding to the resonance abnormal sound signal;

When the operating frequency of the compressor is the resonant operating frequency, the operating frequency of the compressor is adjusted to another frequency different from the resonant operating frequency.
The method according to claim 1, wherein the determining of the resonant abnormal sound signal according to the amplitude and the bandwidth of the sound signal comprises:

Fourier transform is performed on the sound signals under different operating frequencies to obtain sound spectrum signals corresponding to different operating frequencies;

The resonance abnormal sound signal is determined according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal.
The method according to claim 2, wherein the determining the resonance abnormal sound signal according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal comprises:

When there is an abnormal sound segment with a signal amplitude greater than a preset amplitude and a signal bandwidth greater than a first preset bandwidth in the sound spectrum signal, it is determined that the sound spectrum signal is a resonance abnormal sound signal.
The method according to claim 2, wherein the determining the resonance abnormal sound signal according to the signal amplitude, signal bandwidth, preset amplitude and preset bandwidth of the sound spectrum signal comprises:

When there is an iso-tone segment whose signal amplitude is greater than the preset amplitude and the signal bandwidth is greater than the first preset bandwidth in the sound spectrum signal, it is determined whether the signal bandwidth of the iso-tone segment is greater than the second preset bandwidth, and the the second preset bandwidth is greater than the first preset bandwidth;

If the signal bandwidth of the abnormal sound segment is greater than the second preset bandwidth, it is determined that the sound spectrum signal is a resonance abnormal sound signal.
The method of claim 4, further comprising:

If the signal bandwidth of the heterophonic segment is less than or equal to the second preset bandwidth, determine whether there is a signal amplitude greater than the preset amplitude and the signal bandwidth greater than the first preset bandwidth in the adjacent sound spectrum signals corresponding to the neighboring frequencies. Set the bandwidth of the heterophonic segment, wherein, the adjacent frequencies include at least a pair of front and rear adjacent frequency points of the operating frequency corresponding to the sound spectrum signal;

If it exists, it is determined that the sound spectrum signal is a resonance abnormal sound signal.
The method according to claim 4 or 5, wherein the value range of the preset amplitude value is greater than or equal to 52dB;

The value range of the first preset bandwidth is greater than or equal to 3 Hz and less than 10 Hz;

The value range of the second preset bandwidth is greater than or equal to 10 Hz.
A compressor operating frequency control device, characterized in that it includes:

a signal acquisition module, used for respectively acquiring the corresponding sound signals of the compressor under at least two operating frequencies;

a signal determination module for determining a resonance abnormal sound signal according to the amplitude and bandwidth of the sound signal;

a frequency determination module for determining the resonance operating frequency corresponding to the resonance abnormal sound signal;

The frequency control module is configured to adjust the working frequency of the compressor to another frequency different from the resonance working frequency when the working frequency of the compressor is the resonance working frequency.
An air conditioner, characterized in that it comprises: a memory, a processor and a computer program stored on the memory and running on the processor, the processor implementing the program according to claim 1- when the processor executes the program 6. The compressor operating frequency control method of any one.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, is used to implement the above-mentioned method as claimed in any one of claims 1-6. The described compressor operating frequency control method.
A computer program product, comprising a computer program, characterized in that, when the computer program is executed by a processor, the above-mentioned compressor operating frequency control method according to any one of claims 1-6 is implemented.