CN113091283B - Compressor working frequency control method and device, air conditioner, storage medium and product - Google Patents
Compressor working frequency control method and device, air conditioner, storage medium and product Download PDFInfo
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- CN113091283B CN113091283B CN202110371833.9A CN202110371833A CN113091283B CN 113091283 B CN113091283 B CN 113091283B CN 202110371833 A CN202110371833 A CN 202110371833A CN 113091283 B CN113091283 B CN 113091283B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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Abstract
The application provides a compressor operating frequency control method, device, air conditioner, storage medium and product, in-process that the compressor worked with different operating frequencies, can gather the sound signal that obtains the compressor and send, through carrying out spectral analysis to the sound signal under the different frequency, combine amplitude and bandwidth, can confirm the different sound signal of resonance among the sound signal, thereby can confirm the operating frequency that resonance takes place easily in the compressor working process, and then, in-process of compressor work, set the operating frequency that resonance takes place easily into "blacklist", control the compressor and do not work under the operating frequency that resonance takes place easily promptly, thereby avoid resonance, reduce the operating noise of compressor.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a compressor working frequency control method and device, an air conditioner, a storage medium and a product.
Background
The air conditioner is a common household appliance, and can perform long-time refrigeration or heating to ensure constant and comfortable indoor temperature.
The air conditioner generally includes a compressor which functions to compress a driving refrigerant in a refrigerant circuit of the air conditioner, and the compressor is generally installed in an outdoor unit, and the compressor extracts the refrigerant from a low pressure area, compresses the refrigerant, and sends the compressed refrigerant to a high pressure area to be cooled and condensed, and radiates heat to air through a heat radiating fin, and the refrigerant is changed from a gas state to a liquid state, and the pressure is increased.
With the requirements of higher manufacturing cost and more strict manufacturing refinement of the air conditioner, the trend of miniaturization and high frequency of the compressor in the air conditioner is more and more obvious. However, the compressor is liable to generate beat frequency resonance noise during high frequency operation, resulting in high operating noise of the air conditioner.
Disclosure of Invention
The application provides a compressor working frequency control method and device, an air conditioner, a storage medium and a product, which are used for solving the problems in the prior art.
In a first aspect, the present application provides a method for controlling an operating frequency of a compressor, including:
respectively acquiring sound signals corresponding to the compressors under at least two working frequencies;
determining a resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;
determining a resonance working frequency corresponding to the resonance abnormal sound signal;
and when the working frequency of the compressor is the resonance working frequency, adjusting the working frequency of the compressor to be other frequencies different from the resonance working frequency.
In some embodiments, the determining a resonant abnormal sound signal according to the amplitude and the bandwidth of the sound signal includes:
carrying out Fourier transform on the sound signals under different working frequencies to obtain sound frequency spectrum signals corresponding to different working frequencies;
and determining the resonance abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound frequency spectrum signal.
In some embodiments, the determining a resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound spectrum signal includes:
and when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, the determining a resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound spectrum signal includes:
when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining whether the signal bandwidth of the abnormal sound frequency band is larger than a second preset bandwidth, wherein the second preset bandwidth is larger than the first preset bandwidth;
and if the signal bandwidth of the abnormal sound frequency band is greater than the second preset bandwidth, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, further comprising:
if the signal bandwidth of the abnormal sound frequency band is smaller than or equal to the second preset bandwidth, determining whether the abnormal sound frequency band with the signal amplitude larger than the preset amplitude and the signal bandwidth larger than the first preset bandwidth exists in the adjacent sound frequency spectrum signals corresponding to the adjacent frequencies, wherein the adjacent frequencies comprise at least one pair of front and back adjacent frequency points of the working frequency corresponding to the sound frequency spectrum signals;
and if so, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, the predetermined amplitude value ranges from greater than or equal to 52dB;
the value range of the first preset bandwidth is greater than or equal to 3Hz and less than 10Hz;
the value range of the second preset bandwidth is greater than or equal to 10Hz.
In a second aspect, the present application provides a compressor operating frequency control apparatus, comprising:
the signal acquisition module is used for respectively acquiring sound signals corresponding to the compressors under at least two working frequencies;
the signal determining module is used for determining a resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;
the frequency determining module is used for determining the resonance working frequency corresponding to the resonance abnormal sound signal;
and the frequency control module is used for adjusting the working frequency of the compressor to other frequencies 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: the control method comprises the following steps of storing a program, storing the program in a memory, processing the program by a processor, and executing the program by the processor to realize the control method of the working frequency of the compressor.
In a fourth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-executable instructions are used for implementing the compressor operating frequency control method described above.
In a fifth aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the compressor operating frequency control method described above.
The application provides a compressor operating frequency control method, device, air conditioner, storage medium and product, in-process that the compressor worked with different operating frequencies, can gather the sound signal that obtains the compressor and send, through carrying out spectral analysis to the sound signal under the different frequency, combine amplitude and bandwidth, can confirm the different sound signal of resonance among the sound signal, thereby can confirm the operating frequency that resonance takes place easily in the compressor working process, and then, in-process of compressor work, set the operating frequency that resonance takes place easily into "blacklist", control the compressor and do not work under the operating frequency that resonance takes place easily promptly, thereby avoid resonance, reduce the operating noise of compressor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a compressor operating frequency control method according to an embodiment of the present application;
fig. 2 is a schematic diagram of a sound spectrum signal provided in an embodiment of the present application;
fig. 3 is another schematic diagram of a sound spectrum signal according to an embodiment of the present application;
FIG. 4 is another schematic diagram of a sound spectrum signal provided by an embodiment of the present application;
fig. 5 is a schematic diagram of an operating frequency control device of a compressor according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an air conditioner according to an embodiment of the present application.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.
With the requirements of higher manufacturing cost and more strict manufacturing refinement of the air conditioner, the trend of miniaturization and high frequency of the compressor in the air conditioner is more and more obvious. However, the compressor is liable to generate beat frequency resonance noise during high frequency operation, resulting in high operating noise of the air conditioner.
The application provides a compressor working frequency control method and device, an air conditioner, a storage medium and a product, and aims to solve the technical problems in the prior art.
The main conception of the scheme of the application is as follows: in the process that the compressor works with different working frequencies, the sound signal sent by the compressor can be collected, the sound signal under different frequencies is subjected to spectrum analysis, the amplitude and the bandwidth are combined, the resonance abnormal sound signal in the sound signal can be determined, the resonance working frequency in the working process of the compressor can be determined easily, furthermore, in the working process of the compressor, the resonance working frequency is set as a blacklist easily, namely, the compressor is controlled not to work under the resonance working frequency easily, the resonance is avoided, and the working noise of the compressor is reduced.
The following describes the technical solution of the present application and how to solve the above technical problems in detail by specific embodiments. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
It can be understood that, in the present application, the processing steps of the compressor operating frequency control method may be implemented by a controller that controls the operating frequency of the compressor, for example, a processor that controls the inside of the air conditioner.
In some embodiments, a method for controlling an operating frequency of a compressor is provided, and fig. 1 is a schematic diagram of a method for controlling an operating frequency of a compressor according to an embodiment of the present application, as shown in fig. 1, and is explained by a method implemented by a processor, where the method mainly includes the following steps:
s100, respectively acquiring sound signals corresponding to the compressors under at least two working frequencies;
the processor may acquire and acquire a sound signal emitted by the compressor during operation through a sound acquisition device, and the sound acquisition device may be, for example, a microphone.
Specifically, can set up sound collection system in the position that is close to the compressor, for example when the compressor is installed in the outer machine, can set up sound collection system at outer machine, this sound collection system and treater communication connection to, sound collection system can gather the sound signal that the compressor sent in real time, and send to the treater, so that the treater can be handled according to the sound signal that sound collection system gathered.
S200, determining a resonance abnormal sound signal according to the amplitude and the bandwidth of the sound signal;
for the abnormal resonance sound signal, i.e. the abnormal resonance sound signal, it usually has the characteristic that the amplitude of the sound signal is large, and therefore, the amplitude of the sound signal can be used to determine whether the sound signal is the abnormal resonance sound signal. In addition, in order to improve the accuracy of the determination result of the resonant abnormal sound signal, the present embodiment further determines the resonant abnormal sound 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 is indicated that the continuous energy of the noise is low, the noise transfer is not obvious, and at this time, the meaning of avoiding the working frequency is not large. And if the bandwidth with larger amplitude is larger, the continuous energy of the noise is higher, the noise transmission is more obvious, and at the moment, the working frequency avoidance needs to be carried out.
Therefore, the present embodiment can improve the accuracy of the determination result of the resonant abnormal sound signal by determining the resonant abnormal sound signal by simultaneously combining the amplitude and the bandwidth of the sound signal.
S300, determining a resonance working frequency corresponding to the resonance abnormal sound signal;
after the processor determines the resonant abnormal sound signal, the processor can determine the resonant working frequency corresponding to the resonant abnormal sound signal based on the corresponding relation between the resonant abnormal sound signal and the working frequency.
S400, when the working frequency of the compressor is the resonance working frequency, the working frequency of the compressor is adjusted to other frequencies different from the resonance working frequency.
After the processor determines the resonance working frequency corresponding to the resonance abnormal sound signal, the processor can locally store the resonance working frequency and adjust the working frequency of the compressor according to the resonance working frequency.
Specifically, when the working frequency of the compressor is not the resonance working frequency, the processor does not adjust the working frequency of the compressor; when the working frequency of the compressor is the resonance working frequency, the processor adjusts the working frequency of the compressor to other frequencies different from the resonance working frequency, so that secondary resonance is avoided.
The embodiment provides a compressor working frequency control method, in the process that a compressor works at different working frequencies, a sound signal emitted by the compressor can be acquired, the sound signal under different frequencies is subjected to spectrum analysis, and by combining amplitude and bandwidth, a resonance abnormal sound signal in the sound signal can be determined, so that the working frequency which is easy to resonate in the working process of the compressor can be determined, furthermore, in the working process of the compressor, the working frequency which is easy to resonate is set as a blacklist, namely, the compressor is controlled not to work under the working frequency which is easy to resonate, so that resonance is avoided, and the working noise of the compressor is reduced.
In some embodiments, determining the resonant abnormal tone signal based on the amplitude and the bandwidth of the sound signal comprises:
s210, carrying out Fourier transform on the sound signals under different working frequencies to obtain sound frequency spectrum signals corresponding to the different working frequencies;
s220, determining the resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound frequency spectrum signal.
Specifically, when the resonant abnormal sound signal is determined, the processor performs fourier transform on the sound signal at different operating frequencies to transform the sound signal from a time domain signal to a frequency domain signal, so as to obtain sound spectrum signals corresponding to different operating frequencies.
After the sound spectrum signals corresponding to different working frequencies are obtained, the processor determines resonance abnormal sound signals from the sound spectrum signals according to the signal amplitude and the signal bandwidth of the sound spectrum signals and by combining preset amplitude and preset bandwidth.
In some embodiments, after obtaining the sound spectrum signals corresponding to different operating frequencies by performing fourier transform on the sound signals at different operating frequencies, the sound spectrum signals may be further subjected to filtering processing by a band pass filter, for example, the band pass filter may be set to allow sounds audible by human ears, such as 200Hz to 10kHz, so that the start point and the end point of the amplitude exceeding the standard may be conveniently set by the band pass filter to facilitate determining 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 comprises: s221, when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining that the sound frequency 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, and as shown in fig. 2, the sound spectrum signal corresponds to a certain operating frequency of the compressor, wherein the abscissa represents the signal bandwidth (in Hz) and the ordinate represents the signal amplitude (in dB).
Referring to fig. 2, the predetermined amplitude is A0, the first predetermined bandwidth is bw1, and bw1 may be, for example, the width of three columns in fig. 2, in the sound spectrum signal shown in fig. 2, the signal amplitudes of the frequency bands in the dashed line frame are all greater than the predetermined amplitude A0, and the signal bandwidths are the widths of four columns, that is, the signal bandwidths are greater than the first predetermined bandwidth bw1, so that the frequency bands in the dashed line frame in the figure are the abnormal sound frequency bands, and thus the sound spectrum signal shown in fig. 2 may be determined to be the resonance abnormal sound signal.
Optionally, the value range of the preset amplitude A0 may be greater than or equal to 52dB; the value range of the first preset bandwidth bw1 may be greater than or equal to 3Hz.
After determining that the sound spectrum signal shown in fig. 2 is a resonance abnormal sound signal, the processor may use the operating frequency corresponding to the sound spectrum signal shown in fig. 2 as a resonance operating frequency, that is, add the resonance operating frequency to a "black list" to avoid secondary resonance.
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 comprises:
s222, when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining whether the signal bandwidth of the abnormal sound frequency band is larger than a second preset bandwidth, wherein the second preset bandwidth is larger than the first preset bandwidth;
and S223, if the signal bandwidth of the abnormal sound frequency band is greater than a second preset bandwidth, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
Specifically, in order to further improve the accuracy of the determination result of the resonant abnormal sound signal, in this embodiment, when it is determined that an abnormal sound frequency band exists in the acoustic spectrum signal, where the signal amplitude is greater than the preset amplitude and the signal bandwidth is greater than the first preset bandwidth, the processor further determines whether the acoustic spectrum signal is the resonant abnormal sound signal by combining with the second preset bandwidth.
Fig. 3 is another schematic diagram of the sound spectrum signal provided by the embodiment of the present application, and as shown in fig. 3, the sound spectrum signal corresponds to a certain operating frequency of the compressor.
Referring to fig. 3, the predetermined amplitude is A0, the first predetermined bandwidth is bw1, bw1 may be, for example, the width of three columns in fig. 3, and the second predetermined bandwidth is bw2, bw2 may be, for example, the width of five columns in fig. 3. In the sound spectrum signal shown in fig. 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 columns, i.e., the signal bandwidth is greater than the second preset bandwidth bw2, so that the frequency bands in the dashed box in the figure are the abnormal sound frequency bands, and thus the sound spectrum signal shown in fig. 3 can be determined to be the resonance abnormal sound signal.
Optionally, the value range of the preset amplitude A0 may be specifically greater than or equal to 52dB; the value range of the first preset bandwidth bw1 may be specifically greater than or equal to 3Hz and less than 10Hz; the value range of the second preset bandwidth bw2 may be greater than or equal to 10Hz.
After determining that the sound spectrum signal shown in fig. 3 is a resonant abnormal sound signal, the processor may use the operating frequency corresponding to the sound spectrum signal shown in fig. 3 as a resonant operating frequency, that is, add the resonant operating frequency to a "black list" to avoid secondary resonance.
In some embodiments, when there is an abnormal sound band in the sound spectrum signal, where the signal amplitude is greater than the preset amplitude and the signal bandwidth is greater than the first preset bandwidth, determining whether the signal bandwidth of the abnormal sound band is greater than a second preset bandwidth, further includes:
s224, if the signal bandwidth of the abnormal sound frequency band is smaller than or equal to a second preset bandwidth, determining whether the abnormal sound frequency band with the signal amplitude larger than the preset amplitude and the signal bandwidth larger than the first preset bandwidth exists in adjacent sound frequency spectrum signals corresponding to adjacent frequencies, wherein the adjacent frequencies comprise at least one pair of front and rear adjacent frequency points of working frequencies corresponding to the sound frequency spectrum signals;
and S225, if the acoustic spectrum signal exists, determining that the acoustic spectrum signal is a resonance abnormal sound signal.
Specifically, fig. 4 is another schematic diagram of the audio spectrum signal provided by the embodiment of the present application, as shown in fig. 4, the audio spectrum signal corresponds to a certain operating frequency of the compressor.
Referring to fig. 4, the predetermined amplitude is A0, the first predetermined bandwidth is bw1, bw1 may be, for example, the width of three columns in fig. 4, and the second predetermined bandwidth is bw2, bw2 may be, for example, the width of five columns in fig. 4. 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, and the signal bandwidth is the width of four columns, that is, the signal bandwidth is greater than the first preset bandwidth bw1 but less than the second preset bandwidth bw2, so it is necessary to assist in determining whether the sound spectrum signal shown in fig. 4 is a resonance abnormal sound signal according to the adjacent sound spectrum signals of adjacent frequencies.
Specifically, the processor may determine at least one pair of adjacent front and back frequency points of the operating frequency corresponding to the sound spectrum signal, and acquire adjacent sound spectrum signals corresponding to the at least one pair of adjacent front and back frequency points.
Optionally, at least one pair of front and rear adjacent frequency points of the working frequency corresponding to the sound spectrum signal may be determined by using 1Hz as an interval value. For example, if the operating frequency of the audio spectrum signal shown in fig. 4 is 80Hz, the at least one pair of front and rear adjacent frequency points can be 79Hz and 91Hz. Alternatively, 78Hz, 79Hz, 91Hz, 92Hz, etc.
After the adjacent frequencies are determined, determining whether abnormal sound frequency bands with signal amplitude larger than a preset amplitude and signal bandwidth larger than a first preset bandwidth exist in adjacent sound frequency spectrum signals corresponding to the adjacent frequencies, and if the abnormal sound frequency bands exist, determining that the sound frequency spectrum signals are resonance abnormal sound signals; and if the abnormal sound frequency band does not exist in the adjacent sound spectrum signals corresponding to all adjacent frequencies or part of the adjacent frequencies, determining that the sound spectrum signals are not resonance abnormal sound signals.
Optionally, the value range of the preset amplitude A0 may be greater than or equal to 52dB; the value range of the first preset bandwidth bw1 may be specifically greater than or equal to 3Hz and less than 10Hz; the value range of the second preset bandwidth bw2 may be greater than or equal to 10Hz.
After determining that the sound spectrum signal shown in fig. 4 is a resonant abnormal sound signal, the processor may use the operating frequency corresponding to the sound spectrum signal shown in fig. 4 as a resonant operating frequency, that is, add the resonant operating frequency to a "black list" to avoid secondary resonance.
It should be understood that, although the respective steps in the flowcharts in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless otherwise indicated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.
In some embodiments, there is provided a compressor operating frequency control device, and fig. 5 is a schematic diagram of the compressor operating frequency control device provided in the embodiments of the present application, and as shown in fig. 5, the device includes:
a signal acquiring module 100, configured to respectively acquire sound signals corresponding to at least two operating frequencies of a compressor;
a signal determining module 200, configured to determine a resonant abnormal sound signal according to the amplitude and the bandwidth of the sound signal;
a frequency determining module 300, configured to determine a resonant operating frequency corresponding to the resonant abnormal sound signal;
and a frequency control module 400 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 definition of the compressor operation frequency control device, reference may be made to the above definition of the compressor operation frequency control method, which is not described herein again. The modules in the compressor operating frequency control device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
The application provides a compressor operating frequency controlling means, in-process that the compressor carries out work with different operating frequencies, can gather the sound signal that obtains the compressor and send, through carrying out spectral analysis to the sound signal under the different frequency, combine amplitude and bandwidth, can confirm the different sound signal of resonance among the sound signal, thereby can confirm the operating frequency that resonance takes place easily in the compressor working process, and then, in-process at compressor work, establish the operating frequency that resonance takes place easily into "blacklist", control the compressor and do not work under the operating frequency that resonance takes place easily promptly, thereby avoid resonance, reduce the operating noise of compressor.
In some embodiments, the determining a resonant abnormal sound signal according to the amplitude and the bandwidth of the sound signal includes:
carrying out Fourier transform on the sound signals under different working frequencies to obtain sound frequency spectrum signals corresponding to the different working frequencies;
and determining the resonance abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound frequency spectrum signal.
In some embodiments, the determining the resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the acoustic spectrum signal includes:
and when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, the determining a resonant abnormal sound signal according to the signal amplitude, the signal bandwidth, the preset amplitude and the preset bandwidth of the sound spectrum signal includes:
when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal, determining whether the signal bandwidth of the abnormal sound frequency band is larger than a second preset bandwidth, wherein the second preset bandwidth is larger than the first preset bandwidth;
and if the signal bandwidth of the abnormal sound frequency band is greater than the second preset bandwidth, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, further comprising:
if the signal bandwidth of the abnormal sound frequency band is smaller than or equal to the second preset bandwidth, determining whether the abnormal sound frequency band with the signal amplitude larger than the preset amplitude and the signal bandwidth larger than the first preset bandwidth exists in the adjacent sound frequency spectrum signals corresponding to the adjacent frequencies, wherein the adjacent frequencies comprise at least one pair of front and back adjacent frequency points of the working frequency corresponding to the sound frequency spectrum signals;
and if so, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
In some embodiments, the predetermined amplitude value ranges from greater than or equal to 52dB;
the value range of the first preset bandwidth is greater than or equal to 3Hz and less than 10Hz;
the value range of the second preset bandwidth is greater than or equal to 10Hz.
In some embodiments, an air conditioner is provided.
Fig. 6 is a schematic structural diagram of an air conditioner according to an embodiment of the present application, and 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 for storing programs and data, and the processor 111 calls the programs stored in the memory to execute the technical scheme of any one of the method embodiments.
In the above air conditioner, the memory and the processor are electrically connected directly or indirectly to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines, such as a bus. The memory stores computer-executable instructions for implementing the data access control method, and includes at least one software functional module which can be stored in the memory in the form of software or firmware, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory.
The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like. The memory is used for storing programs, and the processor executes the programs after receiving the execution instructions. Further, the software programs and modules within the aforementioned memories may also include an operating system, which may include various software components and/or drivers for managing system tasks (e.g., memory management, storage device control, power management, etc.) and may communicate with various hardware or software components to provide an operating environment for other software components.
The processor may be an integrated circuit chip having signal processing capabilities. The Processor may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. 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 having stored thereon computer-executable instructions for performing the steps of the method embodiments of the present application when executed by a processor is provided.
In some embodiments, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of the method embodiments of the present application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, and the computer program may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct Rambus Dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM), among others.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the 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 (6)
1. A method for controlling an operating frequency of a compressor, comprising:
respectively acquiring sound signals corresponding to the compressors under at least two working frequencies;
carrying out Fourier transform on the sound signals under different working frequencies to obtain sound frequency spectrum signals corresponding to different working frequencies, and carrying out filtering processing on the sound frequency spectrum signals through a band-pass filter;
when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal after filtering processing, determining whether the signal bandwidth of the abnormal sound frequency band is larger than a second preset bandwidth, wherein the second preset bandwidth is larger than the first preset bandwidth;
if the signal bandwidth of the abnormal sound frequency band is smaller than or equal to the second preset bandwidth, determining whether the abnormal sound frequency band with the signal amplitude larger than the preset amplitude and the signal bandwidth larger than the first preset bandwidth exists in the adjacent sound frequency spectrum signals corresponding to the adjacent frequencies, wherein the adjacent frequencies comprise at least one pair of front and back adjacent frequency points of the working frequency corresponding to the sound frequency spectrum signals;
if yes, determining that the sound frequency spectrum signal is a resonance abnormal sound signal;
determining a resonance working frequency corresponding to the resonance abnormal sound signal;
and when the working frequency of the compressor is the resonance working frequency, adjusting the working frequency of the compressor to other frequencies different from the resonance working frequency.
2. The method of claim 1,
and if the signal bandwidth of the abnormal sound frequency band is greater than the second preset bandwidth, determining that the sound frequency spectrum signal is a resonance abnormal sound signal.
3. The method of claim 2, wherein the predetermined amplitude value ranges from greater than or equal to 52dB;
the value range of the first preset bandwidth is greater than or equal to 3Hz and less than 10Hz;
the value range of the second preset bandwidth is greater than or equal to 10Hz.
4. An operating frequency control apparatus for a compressor, comprising:
the signal acquisition module is used for respectively acquiring sound signals corresponding to the compressor under at least two working frequencies;
the signal determination module is used for performing Fourier transform on the sound signals under different working frequencies to obtain sound spectrum signals corresponding to the different working frequencies, and filtering the sound spectrum signals through a band-pass filter;
when an abnormal sound frequency band with a signal amplitude larger than a preset amplitude and a signal bandwidth larger than a first preset bandwidth exists in the sound frequency spectrum signal after filtering processing, determining whether the signal bandwidth of the abnormal sound frequency band is larger than a second preset bandwidth, wherein the second preset bandwidth is larger than the first preset bandwidth;
if the signal bandwidth of the abnormal sound frequency band is smaller than or equal to the second preset bandwidth, determining whether the abnormal sound frequency band with the signal amplitude larger than the preset amplitude and the signal bandwidth larger than the first preset bandwidth exists in the adjacent sound frequency spectrum signals corresponding to the adjacent frequencies, wherein the adjacent frequencies comprise at least one pair of front and back adjacent frequency points of the working frequency corresponding to the sound frequency spectrum signals;
if so, determining that the sound frequency spectrum signal is a resonance abnormal sound signal;
the frequency determining module is used for determining the resonance working frequency corresponding to the resonance abnormal sound signal;
and the frequency control module is used for adjusting the working frequency of the compressor to other frequencies different from the resonance working frequency when the working frequency of the compressor is the resonance working frequency.
5. An air conditioner, comprising: a memory, a processor and a computer program stored on said memory and executable on said processor, said processor implementing said program when executing it, the compressor operating frequency control method as claimed in any one of the preceding claims 1 to 3.
6. A computer-readable storage medium having stored thereon computer-executable instructions for implementing the compressor operating frequency control method according to any one of claims 1 to 3 when executed by a processor.
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| CN202110371833.9A CN113091283B (en) | 2021-04-07 | 2021-04-07 | Compressor working frequency control method and device, air conditioner, storage medium and product |
| PCT/CN2021/140861 WO2022213669A1 (en) | 2021-04-07 | 2021-12-23 | Control method for operating frequency of compressor, apparatus, air conditioner, storage medium, and product |
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| CN202110371833.9A CN113091283B (en) | 2021-04-07 | 2021-04-07 | Compressor working frequency control method and device, air conditioner, storage medium and product |
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| CN113091283B (en) * | 2021-04-07 | 2022-10-28 | 青岛海尔空调器有限总公司 | Compressor working frequency control method and device, air conditioner, storage medium and product |
| CN113847689B (en) * | 2021-09-23 | 2023-05-26 | 佛山市顺德区美的电子科技有限公司 | Air conditioner resonance control method and device, air conditioner and storage medium |
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| KR100301500B1 (en) * | 1998-11-28 | 2001-09-22 | 구자홍 | Resonance frequency control apparatus and method for inverter refrigerator |
| KR100765265B1 (en) * | 2006-08-25 | 2007-10-09 | 삼성전자주식회사 | Air conditioner |
| JP2014166082A (en) * | 2013-02-27 | 2014-09-08 | Hitachi Appliances Inc | Motor control device and air conditioner using the same |
| CN104344535B (en) * | 2013-08-02 | 2017-01-25 | 广东美的制冷设备有限公司 | Method and device for adaptively adjusting frequency of conditioner motor and air conditioner |
| CN108386973A (en) * | 2018-03-05 | 2018-08-10 | 奥克斯空调股份有限公司 | Outdoor machine of air-conditioner control method and device |
| CN110173857B (en) * | 2019-05-29 | 2022-02-11 | 邯郸美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN112393394B (en) * | 2019-08-15 | 2022-03-25 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN110491362B (en) * | 2019-08-21 | 2022-02-01 | 宁波奥克斯电气股份有限公司 | Noise processing method and device of air conditioner, air conditioner and mobile terminal |
| CN111023324B (en) * | 2019-12-27 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Control method and device for resonance noise and air conditioner |
| CN112361553B (en) * | 2020-10-30 | 2022-12-30 | 佛山市顺德区美的电子科技有限公司 | Air conditioner control method, air conditioner control device, air conditioner and storage medium |
| CN112466322B (en) * | 2020-11-27 | 2023-06-20 | 华侨大学 | Noise signal feature extraction method for electromechanical equipment |
| CN113091283B (en) * | 2021-04-07 | 2022-10-28 | 青岛海尔空调器有限总公司 | Compressor working frequency control method and device, air conditioner, storage medium and product |
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