An air conditioner outdoor unit vibration monitoring method, device, storage medium and air conditioner

Abstract

The application provides an air conditioner outdoor unit vibration monitoring method and device, a storage medium and an air conditioner. The air conditioner outdoor unit is internally provided with a millimeter wave module. The method comprises the following steps: the millimeter wave module in the air conditioner outdoor unit emits millimeter wave signals to different positions in the air conditioner outdoor unit, and receives echo signals reflected by the different positions in the air conditioner outdoor unit; according to the received echo signals reflected by the different positions in the air conditioner outdoor unit, time domain information and / or frequency domain information of vibration displacement of the different positions in the air conditioner outdoor unit is determined; and whether the air conditioner outdoor unit has abnormal vibration is judged in combination with the determined time domain information and / or frequency domain information of vibration displacement of the different positions in the air conditioner outdoor unit. The scheme provided by the application can timely find whether the air conditioner outdoor unit has vibration abnormality.

Description

Technical Field

[0001] This invention relates to the field of control, and more particularly to a method, device, storage medium, and air conditioner for monitoring the vibration of an outdoor unit of an air conditioner. Background Technology

[0002] Currently, air conditioning systems are common air conditioning devices in homes and commercial spaces. An air conditioning system consists of an indoor unit and an outdoor unit (outdoor unit), with the outdoor unit containing key components such as the compressor. However, due to the difficulty in achieving complete consistency in the mass production of outdoor units, the performance of the compressor itself exhibits a certain range of variation, and its structural modal characteristics change as the air conditioner is used over time. These factors may lead to problems such as vibration and abnormal noise in some outdoor units during operation, causing inconvenience and a poor user experience.

[0003] In related technologies, mechanical sensors such as accelerometers are typically used to monitor the vibration of air conditioner outdoor units. However, this traditional vibration detection method has some limitations. First, the installation location of mechanical sensors is limited, and they cannot fully cover the vibration of the outdoor unit. Second, mechanical sensors require complex wiring and data transmission, increasing the cost and complexity of the system. Furthermore, mechanical sensors are susceptible to environmental interference and damage, affecting the accuracy and reliability of the detection. Summary of the Invention

[0004] The main objective of this invention is to overcome the deficiencies of the aforementioned related technologies and provide a method, device, storage medium, and air conditioner for monitoring the vibration of an air conditioner outdoor unit, thereby addressing the limitations of using mechanical sensors such as accelerometers for vibration detection of air conditioner outdoor units in related technologies.

[0005] This invention provides a vibration monitoring method for an air conditioner outdoor unit. The outdoor unit is equipped with a millimeter-wave module. The method includes: transmitting millimeter-wave signals to different locations inside the outdoor unit via the millimeter-wave module, and receiving echo signals reflected from different locations inside the outdoor unit; determining time-domain and / or frequency-domain information of vibration displacement at different locations inside the outdoor unit based on the received echo signals; and determining whether abnormal vibration exists in the outdoor unit by combining the determined time-domain and / or frequency-domain information of vibration displacement at different locations inside the outdoor unit.

[0006] Optionally, based on the received echo signals reflected from different positions inside the air conditioner outdoor unit, the time-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit is determined, including: obtaining the vibration displacement at the corresponding position by calculating the delay time of the received echo signals reflected from different positions inside the air conditioner outdoor unit; extracting the relationship between the amplitude and time at different positions based on the vibration displacement at different times, i.e., the time-domain information of the vibration displacement at different positions; and / or, based on the received echo signals reflected from different positions inside the air conditioner outdoor unit, the frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit is determined, including: calculating the obtained time-domain information of the vibration displacement at different positions according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions.

[0007] Optionally, by combining the time-domain or frequency-domain information of the vibration displacement at different locations inside the outdoor unit of the air conditioner, it is determined whether the outdoor unit of the air conditioner has abnormal vibration. This includes: obtaining the current set operating frequency of the air conditioner's compressor, and obtaining the calibrated amplitude range and / or calibrated vibration frequency range corresponding to different locations inside the outdoor unit of the air conditioner at the current set operating frequency; determining whether the current amplitude and / or vibration frequency at different locations inside the outdoor unit of the air conditioner is within the corresponding calibrated amplitude range and / or calibrated vibration frequency range based on the obtained frequency-domain information of the vibration displacement at different locations; if it is determined that there are locations within the different locations inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding location; and / or, based on the time-domain information of the vibration displacement at different locations, determining whether there are waveforms with the same phase; if so, then superimposing the amplitudes of the existing waveforms with the same phase, and if the amplitude after superposition exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, then it is determined that there is abnormal vibration in the outdoor unit of the air conditioner.

[0008] Optionally, it also includes: if it is determined that the outdoor unit of the air conditioner has abnormal vibration, then adjusting the compressor frequency in response to the abnormal vibration.

[0009] Optionally, in response to abnormal vibrations, the compressor frequency is adjusted, including: if it is determined that there are locations within the outdoor unit of the air conditioner where the current amplitude or vibration frequency is outside the corresponding calibrated amplitude range and / or calibrated vibration frequency range, and if the current amplitude at the corresponding location is less than the lower limit of the corresponding calibrated amplitude range and / or the current vibration frequency is less than the lower limit of the corresponding calibrated vibration frequency range, then the compressor operating frequency of the air conditioner is increased; if the current amplitude at the corresponding location is greater than the upper limit of the corresponding calibrated amplitude range and / or the current vibration frequency is greater than the upper limit of the corresponding calibrated vibration frequency range, then... If the abnormal vibration is not resolved, the compressor operating frequency of the air conditioner is reduced; and / or, based on the time-domain information of vibration displacement at different locations, if it is determined that there are waveforms with the same phase, and the amplitude of the superimposed amplitudes of the waveforms with the same phase exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, the compressor operating frequency of the air conditioner is first increased. If the abnormal vibration is not resolved, the compressor operating frequency of the air conditioner is then reduced again until the abnormal vibration is resolved. Alternatively, the compressor operating frequency of the air conditioner is first reduced, and if the abnormal vibration is not resolved, the compressor operating frequency of the air conditioner is then increased again until the abnormal vibration is resolved.

[0010] Another aspect of the present invention provides a vibration monitoring device for an air conditioner outdoor unit. The outdoor unit is equipped with a millimeter-wave module. The device includes: a signal transmitting unit for transmitting millimeter-wave signals to different locations inside the outdoor unit via the millimeter-wave module; a signal receiving unit for receiving echo signals reflected from different locations inside the outdoor unit; a determining unit for determining time-domain and / or frequency-domain information of vibration displacement at different locations inside the outdoor unit based on the echo signals received by the signal receiving unit; and a judging unit for judging whether abnormal vibration exists in the outdoor unit by combining the time-domain and / or frequency-domain information of vibration displacement at different locations inside the outdoor unit determined by the determining unit.

[0011] Optionally, the determining unit determines the time-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit. This includes: obtaining the vibration displacement at the corresponding position by calculating the delay time of the received echo signals reflected from different positions inside the air conditioner outdoor unit; extracting the relationship between the amplitude and time at different positions based on the vibration displacement at different times, i.e., the time-domain information of the vibration displacement at different positions; and / or, the determining unit determines the frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit. This includes: calculating the obtained time-domain information of the vibration displacement at different positions according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions.

[0012] Optionally, the judging unit, in conjunction with the time-domain or frequency-domain information of vibration displacement at different positions inside the outdoor unit of the air conditioner determined by the determining unit, judges whether the outdoor unit of the air conditioner has abnormal vibration, including: obtaining the current set operating frequency of the air conditioner's compressor, and obtaining the calibrated amplitude range and / or calibrated vibration frequency range corresponding to different positions inside the outdoor unit of the air conditioner at the current set operating frequency; judging whether the current amplitude and / or vibration frequency at different positions inside the outdoor unit of the air conditioner is within the corresponding calibrated amplitude range and / or calibrated vibration frequency range based on the obtained frequency-domain information of vibration displacement at different positions; if it is determined that there are positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding position; and / or, based on the time-domain information of vibration displacement at different positions, judging whether there are waveforms with the same phase; if so, then the amplitudes of the existing waveforms with the same phase are superimposed; if the amplitude after superposition exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, then it is determined that there is abnormal vibration in the outdoor unit of the air conditioner.

[0013] Optionally, it further includes: an adjustment unit, used to adjust the compressor frequency in response to the abnormal vibration if the determining unit determines that the outdoor unit of the air conditioner has abnormal vibration.

[0014] Optionally, the adjustment unit adjusts the compressor frequency in response to abnormal vibrations, including: if it is determined that there are locations within the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is outside the corresponding calibrated amplitude range and / or calibrated vibration frequency range, and if the current amplitude at the corresponding location is less than the lower limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is less than the lower limit frequency value of the corresponding calibrated vibration frequency range, then the compressor operating frequency of the air conditioner is increased; if the current amplitude at the corresponding location is greater than the upper limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is greater than the upper limit of the corresponding calibrated vibration frequency range, then the compressor operating frequency of the air conditioner is increased. If the frequency value is not specified, the operating frequency of the air conditioner compressor is reduced; and / or, based on the time-domain information of vibration displacement at different locations, if it is determined that there are waveforms with the same phase, and the amplitude of the superimposed amplitudes of the waveforms with the same phase exceeds the calibrated total amplitude of the air conditioner outdoor unit, the operating frequency of the air conditioner compressor is first increased. If the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then reduced until the abnormal vibration is resolved. Alternatively, the operating frequency of the air conditioner compressor is first reduced, and if the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then increased until the abnormal vibration is resolved.

[0015] In another aspect, the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0016] In another aspect, the present invention provides an air conditioner, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods described above.

[0017] In another aspect, the present invention provides an air conditioner, including any of the aforementioned air conditioner outdoor unit vibration monitoring devices.

[0018] According to the technical solution of the present invention, millimeter wave technology is used to collect outdoor unit vibration data in real time, which can monitor the vibration status of the outdoor unit in real time and detect abnormalities in advance. It has the advantages of flexibility, reliability and strong adaptability.

[0019] By using millimeter-wave technology for multi-point vibration monitoring and analysis, we can determine whether any abnormal vibrations have occurred. By adjusting the compressor's operating parameters, we can resolve the vibration problem of the outdoor unit of the air conditioner, avoid resonance and abnormal noise, and improve the performance of the air conditioner and the user experience. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of an embodiment of the air conditioner vibration monitoring method provided by the present invention;

[0022] Figure 2 The present invention illustrates a flowchart of the steps for determining whether the outdoor unit of the air conditioner has abnormal vibration by combining time-domain or frequency-domain information of vibration displacement at different locations inside the outdoor unit.

[0023] Figure 3 This is a structural block diagram of an embodiment of the air conditioner outdoor unit vibration monitoring device provided by the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] To overcome the limitations of existing vibration detection methods, wireless communication technology has been introduced for vibration monitoring of air conditioner outdoor units. Millimeter-wave communication technology, due to its high frequency and bandwidth, has become a promising wireless communication technology. This technology enables high-speed data transmission and precise signal positioning, and is therefore applied in various fields, including wireless communication, radar, and autonomous driving.

[0027] This invention provides a method for monitoring the vibration of an air conditioner outdoor unit. The outdoor unit is equipped with a millimeter-wave module.

[0028] A millimeter-wave module is a device used for millimeter-wave band communication and radar applications. Millimeter waves refer to electromagnetic waves with frequencies ranging from 30 GHz to 300 GHz, corresponding to wavelengths between 1 millimeter and 10 millimeters. A millimeter-wave module includes the following components: Transmitter: A device used to generate millimeter-wave signals. It converts electrical signals into electromagnetic wave signals in the millimeter-wave band for data transmission or radar detection. Receiver: A device used to receive and demodulate millimeter-wave signals. It receives millimeter-wave signals transmitted from other devices or radar systems and converts them into processable electrical signals. Antenna: A device used to radiate and receive millimeter-wave signals. Millimeter-wave antennas have a small size and high-frequency characteristics, adaptable to the special requirements of the millimeter-wave band. Amplifier: A device used to amplify millimeter-wave signals. Because millimeter-wave signals experience significant attenuation during transmission, amplifiers increase signal strength to ensure signal quality and transmission distance. Control Circuitry: A device used to manage and control the millimeter-wave module. It may include frequency control, power control, modulation and demodulation, and other necessary electronic components.

[0029] The millimeter-wave module can be installed inside the air conditioner's outdoor unit casing, either on the upper part or the side. The millimeter-wave module has two or more antennas, each facing a different location inside the air conditioner's outdoor unit. These different locations inside the outdoor unit include the air conditioner's compressor and the connection point between the compressor and the piping.

[0030] Figure 1 This is a schematic diagram of an embodiment of the air conditioning vibration monitoring method provided by the present invention.

[0031] like Figure 1 As shown, according to an embodiment of the present invention, the air conditioning vibration monitoring method includes at least steps S110, S120 and S130.

[0032] Step S110: Transmit millimeter wave signals to different locations inside the air conditioner outdoor unit through the millimeter wave module inside the air conditioner outdoor unit, and receive the echo signals reflected from different locations inside the air conditioner outdoor unit.

[0033] Specifically, the millimeter-wave module transmits millimeter-wave signals to different locations inside the outdoor unit of the air conditioner via antennas positioned at different locations, and receives the echo signals reflected from the corresponding locations. The transmitted millimeter-wave signals can be high-frequency linear frequency modulated pulse signals with an operating frequency of 76-81 GHz and a corresponding wavelength of approximately 4 mm.

[0034] Step S120: Based on the received echo signals reflected from different positions inside the air conditioner outdoor unit, determine the time-domain information and / or frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit.

[0035] Specifically, based on the received echo signals reflected from different positions inside the air conditioner outdoor unit, the time-domain information of the vibration displacement at those different positions is obtained. By calculating the delay time of the received echo signals reflected from different positions inside the air conditioner outdoor unit, the vibration displacement at the corresponding position can be obtained. Based on the vibration displacement at different times and positions, the relationship between the amplitude and time at different positions can be extracted, i.e., the time-domain information of the vibration displacement at different positions.

[0036] The time delay between the millimeter-wave transmitter emitting the millimeter wave and the receiver receiving the reflected millimeter wave from the compressor is considered a single time interval. The vibration displacement is determined by the instantaneous distance difference between the echo signals reflected from the corresponding locations in two adjacent millimeter-wave signal transmissions. For example, if the delay time for the previous transmission and reception of the millimeter wave is t1, then the round-trip distance of the millimeter wave reflected by the compressor is (speed of light * t1); if the delay time for the current transmission and reception of the millimeter wave is t2, then the round-trip distance of the millimeter wave reflected by the compressor is (speed of light * t2), and the vibration displacement of the compressor is (speed of light * t1 - speed of light * t2) / 2. By calculating the vibration displacement at different times and locations, the relationship between the amplitude of the vibration at the corresponding location and time can be extracted, i.e., the time-domain information.

[0037] Furthermore, after obtaining the time-domain information of the vibration displacement at the corresponding position, the obtained time-domain information of the vibration displacement at different positions can be calculated according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions. For example, by performing Fourier transform or wavelet transform on the time-domain information of the vibration displacement at different positions (i.e., the relationship between amplitude and time), the frequency-domain information of the vibration displacement generated at the corresponding position can be obtained, that is, the relationship between the amplitude and frequency of the vibration generated at the corresponding position.

[0038] Step S130: Based on the time-domain information and / or frequency-domain information of the vibration displacement at different locations inside the outdoor unit of the air conditioner, determine whether there is abnormal vibration in the outdoor unit of the air conditioner.

[0039] Figure 2 This diagram illustrates the steps of the present invention to determine whether the outdoor unit of the air conditioner experiences abnormal vibration by combining time-domain or frequency-domain information of vibration displacement at different locations inside the outdoor unit. Figure 2 As shown, in one specific embodiment, step S130 includes steps S131, S132 and S133.

[0040] Step S131: Obtain the current set operating frequency of the air conditioner compressor, and obtain the calibration amplitude range and / or calibration vibration frequency range corresponding to different positions inside the air conditioner outdoor unit at the current set operating frequency.

[0041] Step S132: Based on the frequency domain information of the vibration displacement at different positions, determine whether the current amplitude and / or vibration frequency at different positions inside the air conditioner outdoor unit are within the corresponding calibrated amplitude range and / or calibrated vibration frequency range.

[0042] Step S133: If it is determined that there are positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency are not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding position.

[0043] Specifically, the operating frequency of the current air conditioner compressor is obtained, and under experimental conditions, the calibrated amplitude and / or frequency range corresponding to the operating frequency and the position is obtained. If the amplitude and / or frequency of the corresponding position is not within the calibrated range, it is judged as abnormal.

[0044] In another specific implementation, based on the time-domain information of vibration displacement at different locations, it is determined whether there are waveforms with the same phase. If so, the amplitudes of the existing waveforms with the same phase are superimposed. If the amplitude after superposition exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, it is determined that the outdoor unit of the air conditioner has abnormal vibration.

[0045] Specifically, based on the relationship between amplitude and time at different locations, it is determined whether there are identical waveforms, that is, whether there are different locations where the phase difference of the waveforms is 0. If so, it indicates the existence of vibrations with the same frequency and phase. These vibrations will generate enhanced interference, forming larger vibrations. The amplitude is then calculated by superposition. If the amplitude after superposition exceeds the total amplitude specified by the outdoor unit, it is determined that the outdoor unit has abnormal vibration.

[0046] Furthermore, based on the above embodiments, the method further includes: if it is determined that the outdoor unit of the air conditioner has abnormal vibration, then adjusting the compressor frequency to avoid the occurrence of the abnormality.

[0047] Specifically, if it is determined that there are positions within the different locations inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is outside the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then if the current amplitude at the corresponding position is less than the lower limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is less than the lower limit frequency value of the corresponding calibrated vibration frequency range, the operating frequency of the air conditioner's compressor is increased; if the current amplitude at the corresponding position is greater than the upper limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is greater than the upper limit frequency value of the corresponding calibrated vibration frequency range, the operating frequency of the air conditioner's compressor is decreased.

[0048] For example, if abnormal vibrations exceeding the rated vibration range are detected in the outdoor unit due to aging and loose connecting pipes after the air conditioner is turned on, the compressor frequency should be appropriately reduced to avoid aggravating the abnormal noise.

[0049] Based on the time-domain information of vibration displacement at different locations, if it is determined that there are waveforms with the same phase, and the amplitude of the superimposed amplitudes of the waveforms with the same phase exceeds the rated total amplitude of the outdoor unit of the air conditioner, the operating frequency of the air conditioner compressor is first increased. If the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then decreased until the abnormal vibration is resolved. Alternatively, the operating frequency of the air conditioner compressor is first decreased, and if the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then increased until the abnormal vibration is resolved.

[0050] The first exception handling method mentioned above takes precedence, while the second exception handling method must meet the first handling requirement.

[0051] This invention also provides a vibration monitoring device for an air conditioner outdoor unit. A millimeter-wave module is installed inside the air conditioner outdoor unit. Specifically, the millimeter-wave module can be installed inside the air conditioner outdoor unit casing, either above or to the side. The millimeter-wave module has two or more antennas, each pointing towards a different location inside the air conditioner outdoor unit. These different locations inside the air conditioner outdoor unit include: the air conditioner compressor and the connection point between the compressor and the piping.

[0052] Figure 3 This is a structural block diagram of an embodiment of the air conditioner outdoor unit vibration monitoring device provided by the present invention. Figure 3 As shown, the air conditioner outdoor unit vibration monitoring device 100 includes a signal transmitting unit 110, a signal receiving unit 120, a determining unit 130, and a judging unit 140.

[0053] The signal transmitting unit 110 is used to transmit millimeter-wave signals to different locations inside the air conditioner outdoor unit via a millimeter-wave module inside the air conditioner outdoor unit. The signal receiving unit 120 is used to receive echo signals reflected from different locations inside the air conditioner outdoor unit.

[0054] Specifically, the signal transmitting unit 110 can transmit millimeter-wave signals to different locations inside the outdoor unit of the air conditioner via antennas facing different positions on the millimeter-wave module, and the signal receiving unit 120 can receive the echo signals reflected from the corresponding locations. The transmitted millimeter-wave signals can be high-frequency linear frequency modulated pulse signals with an operating frequency of 76-81 GHz and a corresponding wavelength of approximately 4 mm.

[0055] The determining unit 130 is used to determine the time-domain information and / or frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit.

[0056] In one specific embodiment, the determining unit 130 determines the time-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit. This includes: obtaining the time-domain information of the vibration displacement at different positions based on the received echo signals reflected from different positions inside the air conditioner outdoor unit. The vibration displacement at the corresponding position can be obtained by calculating the delay time of the received echo signals reflected from different positions inside the air conditioner outdoor unit. Based on the vibration displacement at different times and positions, the relationship between the amplitude and time at different positions can be extracted, i.e., the time-domain information of the vibration displacement at different positions.

[0057] The time delay between the millimeter-wave transmitter emitting the millimeter wave and the receiver receiving the reflected millimeter wave from the compressor is considered a single time interval. The vibration displacement is determined by the instantaneous distance difference between the echo signals reflected from the corresponding locations in two adjacent millimeter-wave signal transmissions. For example, if the delay time for the previous transmission and reception of the millimeter wave is t1, then the round-trip distance of the millimeter wave reflected by the compressor is (speed of light * t1); if the delay time for the current transmission and reception of the millimeter wave is t2, then the round-trip distance of the millimeter wave reflected by the compressor is (speed of light * t2), and the vibration displacement of the compressor is (speed of light * t1 - speed of light * t2) / 2. By calculating the vibration displacement at different times and locations, the relationship between the amplitude of the vibration at the corresponding location and time can be extracted, i.e., the time-domain information.

[0058] Furthermore, after determining the time-domain information of the vibration displacement at the corresponding position, the determining unit 130 can calculate the obtained time-domain information of the vibration displacement at different positions according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions. For example, by performing Fourier transform or wavelet transform on the time-domain information of the vibration displacement at different positions (i.e., the relationship between amplitude and time), the frequency-domain information of the vibration displacement generated at the corresponding position can be obtained, that is, the relationship between the amplitude and frequency of the vibration generated at the corresponding position.

[0059] The judgment unit 140 is used to determine whether there is abnormal vibration in the air conditioner outdoor unit by combining the time domain information and / or frequency domain information of the vibration displacement at different positions inside the air conditioner outdoor unit determined by the determination unit.

[0060] In one specific embodiment, the judging unit 140, in conjunction with the time-domain and / or frequency-domain information of vibration displacement at different positions inside the outdoor unit of the air conditioner determined by the determining unit 130, determines whether there is abnormal vibration in the outdoor unit of the air conditioner. This includes: obtaining the current set operating frequency of the air conditioner's compressor, and obtaining the calibrated amplitude range and / or calibrated vibration frequency range corresponding to different positions inside the outdoor unit of the air conditioner at the current set operating frequency; determining whether the current amplitude and / or vibration frequency at different positions inside the outdoor unit of the air conditioner is within the corresponding calibrated amplitude range and / or calibrated vibration frequency range based on the obtained frequency-domain information of vibration displacement at different positions; if it is determined that there are positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding position.

[0061] Specifically, the operating frequency of the current air conditioner compressor is obtained, and under experimental conditions, the calibrated amplitude and / or frequency range corresponding to the operating frequency and the position is obtained. If the amplitude and / or frequency of the corresponding position is not within the calibrated range, it is judged as abnormal.

[0062] In another specific embodiment, the judgment unit 140, in conjunction with the time-domain information or frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit, determines whether the air conditioner outdoor unit has abnormal vibration, including: based on the time-domain information of the vibration displacement at different positions, determining whether there are waveforms with the same phase; if so, superimposing the amplitudes of the existing waveforms with the same phase; if the amplitude after superposition exceeds the calibrated total amplitude of the air conditioner outdoor unit, then determining that the air conditioner outdoor unit has abnormal vibration.

[0063] Furthermore, based on the above embodiments, the device 100 further includes: an adjustment unit (not shown), used to adjust the compressor frequency to avoid the occurrence of abnormal vibration if the determining unit determines that the outdoor unit of the air conditioner has abnormal vibration.

[0064] If it is determined that there are locations within the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency are outside the corresponding calibrated amplitude and / or calibrated frequency ranges, then if the current amplitude at the corresponding location is less than the lower limit of the corresponding calibrated amplitude range and / or the current vibration frequency is less than the lower limit of the corresponding calibrated frequency range, the compressor operating frequency of the air conditioner is increased. If the current amplitude at the corresponding location is greater than the upper limit of the corresponding calibrated amplitude range and / or the current vibration frequency is greater than the upper limit of the corresponding calibrated frequency range, the compressor operating frequency of the air conditioner is decreased. For example, if abnormal vibration exceeding the calibrated vibration range is detected in the outdoor unit after the air conditioner is turned on due to aging and loose connecting pipes, the compressor frequency is appropriately reduced to avoid exacerbating the abnormal noise.

[0065] Based on the time-domain information of vibration displacement at different locations, if it is determined that there are waveforms with the same phase, and the amplitude of the superimposed amplitudes of the waveforms with the same phase exceeds the rated total amplitude of the outdoor unit of the air conditioner, the operating frequency of the air conditioner compressor is first increased. If the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then decreased until the abnormal vibration is resolved. Alternatively, the operating frequency of the air conditioner compressor is first decreased, and if the abnormal vibration is not resolved, the operating frequency of the air conditioner compressor is then increased until the abnormal vibration is resolved.

[0066] The first exception handling method mentioned above takes precedence, while the second exception handling method must meet the first handling requirement.

[0067] The present invention also provides a storage medium corresponding to the air conditioning vibration monitoring method, wherein a computer program is stored thereon, and when the program is executed by a processor, the steps of any of the aforementioned methods are implemented.

[0068] The present invention also provides an air conditioner corresponding to the air conditioner vibration monitoring method, comprising a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the aforementioned methods.

[0069] The present invention also provides an air conditioner corresponding to the air conditioner vibration monitoring device, including any of the aforementioned air conditioner vibration monitoring devices.

[0070] Accordingly, the solution provided by this invention utilizes millimeter-wave technology for real-time acquisition of outdoor unit vibration data, and performs signal processing and analysis using appropriate algorithms. The millimeter-wave module is installed above or to the side of the outdoor unit; by receiving and demodulating millimeter-wave signals, relevant information about the outdoor unit's vibration can be obtained. This wireless monitoring system offers advantages such as flexibility, reliability, and adaptability, enabling real-time monitoring of the outdoor unit's vibration status, early detection of anomalies, and the implementation of corresponding control measures to ensure the normal operation of the air conditioning system and improve user experience.

[0071] This invention utilizes millimeter-wave technology for multi-point vibration monitoring and analysis to determine whether abnormal vibration has occurred. By adjusting the compressor's operating parameters, it solves the vibration problem of the air conditioner's outdoor unit, avoids resonance and abnormal noise, and improves air conditioner performance and user experience.

[0072] The present invention can achieve the following beneficial effects:

[0073] Avoid resonance and abnormal noise: By monitoring and analyzing the vibration of the outdoor unit in real time, the system can automatically adjust the operating frequency of the compressor to avoid resonance and reduce abnormal noise.

[0074] Improving air conditioning performance and user experience: By reducing resonance and noise problems caused by vibration, this invention can improve the operation of air conditioning systems, enhance air conditioning performance, and provide a more comfortable user experience.

[0075] Real-time monitoring and early warning function: Based on millimeter wave technology, this invention can monitor the vibration of the outdoor unit in real time, detect abnormal vibrations in a timely manner, and issue early warnings through control strategies, thereby avoiding possible malfunctions and damage.

[0076] System reliability and scalability: Vibration detection using wireless millimeter-wave communication technology reduces reliance on mechanical sensors, improves system reliability, and has strong scalability, making it applicable to air conditioning systems of different types and sizes.

[0077] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0079] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0080] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0081] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for monitoring the vibration of an air conditioner outdoor unit, characterized in that, The outdoor unit of the air conditioner is equipped with a millimeter-wave module, and the method includes: The millimeter-wave module inside the outdoor unit of the air conditioner transmits millimeter-wave signals to different locations inside the outdoor unit and receives echo signals reflected from different locations inside the outdoor unit. Based on the received echo signals reflected from different positions inside the outdoor unit of the air conditioner, determine the time-domain and / or frequency-domain information of the vibration displacement at different positions inside the outdoor unit of the air conditioner. Based on the time-domain and / or frequency-domain information of the vibration displacement at different locations inside the outdoor unit of the air conditioner, determine whether the outdoor unit of the air conditioner experiences abnormal vibration, including: Obtain the current set operating frequency of the air conditioner's compressor, and obtain the calibrated amplitude range and / or calibrated vibration frequency range corresponding to different positions inside the air conditioner's outdoor unit at the current set operating frequency; Based on the frequency domain information of the vibration displacement at different locations, determine whether the current amplitude and / or vibration frequency at different locations inside the outdoor unit of the air conditioner are within the corresponding calibrated amplitude range and / or calibrated vibration frequency range. If it is determined that there are positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency are not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding position. And / or, Based on the time-domain information of vibration displacement at different locations, determine whether there are waveforms with the same phase. If they exist, the amplitudes of the waveforms with the same phase are superimposed. If the amplitude after superposition exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, then it is determined that the outdoor unit of the air conditioner has abnormal vibration.

2. The method according to claim 1, characterized in that, Based on the received echo signals reflected from different locations inside the outdoor unit of the air conditioner, the time-domain information of the vibration displacement at different locations inside the outdoor unit is determined, including: The vibration displacement at the corresponding position is obtained by calculating the delay time of the echo signals reflected from different positions inside the air conditioner outdoor unit. Based on the vibration displacement at different times and locations, the relationship between amplitude and time at different locations is extracted, that is, the time-domain information of vibration displacement at different locations. And / or, Based on the received echo signals reflected from different locations inside the outdoor unit of the air conditioner, the frequency domain information of the vibration displacement at different locations inside the outdoor unit of the air conditioner is determined, including: The time-domain information of the vibration displacement at different positions is calculated according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions.

3. The method according to claim 1 or 2, characterized in that, Also includes: If it is determined that the outdoor unit of the air conditioner is vibrating abnormally, the compressor frequency will be adjusted accordingly.

4. The method according to claim 3, characterized in that, To address the abnormal vibration, adjust the compressor frequency, including: If it is determined that there are locations within the different positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency is outside the corresponding calibrated amplitude range and / or calibrated vibration frequency range, If it is determined that the current amplitude at the corresponding position is less than the lower limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is less than the lower limit frequency value of the corresponding calibrated vibration frequency range, then the operating frequency of the air conditioner compressor is increased. If it is determined that the current amplitude at the corresponding position is greater than the upper limit amplitude value of the corresponding calibrated amplitude range and / or the current vibration frequency is greater than the upper limit frequency value of the corresponding calibrated vibration frequency range, then the operating frequency of the air conditioner compressor is reduced. And / or, Based on the time-domain information of vibration displacement at different locations, if waveforms with the same phase are identified, and the sum of the amplitudes of these waveforms exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, then... First, increase the operating frequency of the air conditioner's compressor. If the abnormal vibration is not resolved, then decrease the operating frequency of the air conditioner's compressor until the abnormal vibration is resolved. Alternatively, first decrease the operating frequency of the air conditioner's compressor. If the abnormal vibration is not resolved, then increase the operating frequency of the air conditioner's compressor until the abnormal vibration is resolved.

5. A vibration monitoring device for an air conditioner outdoor unit, characterized in that, The outdoor unit of the air conditioner is equipped with a millimeter-wave module, and the device includes: The signal transmitting unit is used to transmit millimeter wave signals to different locations inside the air conditioner outdoor unit through the millimeter wave module inside the air conditioner outdoor unit; A signal receiving unit is used to receive echo signals reflected from different locations inside the outdoor unit of the air conditioner; The determining unit is used to determine the time-domain and / or frequency-domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit. The judgment unit is used to determine whether there is abnormal vibration in the air conditioner outdoor unit by combining the time-domain information and / or frequency-domain information of vibration displacement at different positions inside the air conditioner outdoor unit determined by the determining unit, including: Obtain the current set operating frequency of the air conditioner's compressor, and obtain the calibrated amplitude range and / or calibrated vibration frequency range corresponding to different positions inside the air conditioner's outdoor unit at the current set operating frequency; Based on the frequency domain information of the vibration displacement at different locations, determine whether the current amplitude and / or vibration frequency at different locations inside the outdoor unit of the air conditioner are within the corresponding calibrated amplitude range and / or calibrated vibration frequency range. If it is determined that there are positions inside the outdoor unit of the air conditioner where the current amplitude and / or vibration frequency are not within the corresponding calibrated amplitude range and / or calibrated vibration frequency range, then it is determined that there is abnormal vibration at the corresponding position. And / or, Based on the time-domain information of vibration displacement at different locations, determine whether there are waveforms with the same phase. If they exist, the amplitudes of the waveforms with the same phase are superimposed. If the amplitude after superposition exceeds the calibrated total amplitude of the outdoor unit of the air conditioner, then it is determined that the outdoor unit of the air conditioner has abnormal vibration.

6. The apparatus according to claim 5, characterized in that, The determining unit determines the time-domain information of the vibration displacement at different locations inside the air conditioner outdoor unit based on the echo signals reflected from different locations inside the air conditioner outdoor unit received by the signal receiving unit, including: The vibration displacement at the corresponding position is obtained by calculating the delay time of the echo signals reflected from different positions inside the air conditioner outdoor unit. Based on the vibration displacement at different times and locations, the relationship between amplitude and time at different locations is extracted, that is, the time-domain information of vibration displacement at different locations. And / or, The determining unit determines the frequency domain information of the vibration displacement at different positions inside the air conditioner outdoor unit based on the echo signals reflected from different positions inside the air conditioner outdoor unit received by the signal receiving unit, including: The time-domain information of the vibration displacement at different positions is calculated according to a preset time-domain to frequency-domain transformation algorithm to obtain the frequency-domain information of the vibration displacement at different positions.

7. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-4.

8. An air conditioner, characterized in that, The air conditioner includes a processor, a memory, and a computer program stored in the memory that can run on the processor. When the processor executes the program, it implements the steps of the method according to any one of claims 1-4, or the air conditioner includes a vibration monitoring device for the outdoor unit as described in any one of claims 5-6.

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