Noise detection method, device and equipment of electric compressor and storage medium

Abstract

The invention relates to the technical field of automobile engineering, in particular to a noise detection method, device and equipment for an electric compressor and a storage medium, and the method comprises the steps that first actual vibration noise in a vehicle under the air conditioner working condition is collected; second actual vibration noise generated when the air blower works independently under the air conditioner working condition and third actual vibration noise generated when the fan works independently are obtained; and fourth actual vibration noise of the electric compressor is calculated according to the first actual vibration noise, the second actual vibration noise and the third actual vibration noise. According to the embodiment of the invention, the working noise of the electric compressor can be determined based on the noise in the vehicle under the air conditioner working condition, the noise when the air blower works independently and the noise when the fan works independently, and the accuracy and reliability of the vibration noise test of the electric compressor are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of automobile engineering technology, and in particular to a noise detection method, device, equipment and storage medium for an electric compressor. Background Art

[0002] Both hybrid vehicles and electric vehicles use electric compressors. With the increase in the market share of new energy vehicles, the development demand for NVH (Noise, Vibration, Harshness) of electric compressors for the whole vehicle is more urgent. However, since the electric compressor cannot work independently on the whole vehicle, it must work with the cooling fan and blower. Therefore, the vibration noise of the compressor will be mixed with the vibration noise of the cooling fan and blower, and it is difficult to accurately obtain the vibration noise of the electric compressor on the whole vehicle.

[0003] In the related technology, the lowest gear is set for the blower, the fan is connected to an external power source, and is given a lower speed to operate, so that the electric compressor can meet the conditions for normal operation, and the contribution of the fan and blower to the vibration and noise of the whole vehicle is as small as possible. On this basis, the compressor is controlled to operate at different speeds, and the vibration and noise data in the car at this time is tested, and it is approximately considered that the measured results are mainly contributed by the compressor.

[0004] However, in the related art, since the blower and cooling fan are always involved in the operation during the test process, the test results cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle, and it is impossible to test the vibration and noise of the whole vehicle compressor in the real scene, which reduces the accuracy and reliability of the electric compressor vibration and noise test, which needs to be solved urgently. Summary of the invention

[0005] The present application provides a noise detection method, device, equipment and storage medium for an electric compressor to solve the problems in the related art that the blower and cooling fan are always involved in the operation during the test process, resulting in the test results being unable to accurately reflect the vibration and noise level of the compressor on the whole vehicle, and being unable to test the vibration and noise of the whole vehicle compressor in real scenarios, thereby reducing the accuracy and reliability of the vibration and noise test of the electric compressor.

[0006] A first aspect of the present application provides a noise detection method for an electric compressor, comprising the following steps: collecting a first actual vibration noise in a vehicle under air-conditioning conditions; respectively obtaining a second actual vibration noise when a blower works alone and a third actual vibration noise when a fan works alone under the air-conditioning conditions; and calculating a fourth actual vibration noise of the electric compressor based on the first actual vibration noise, the second actual vibration noise and the third actual vibration noise.

[0007] Optionally, in one embodiment of the present application, the collecting of the first actual vibration noise in the vehicle under the air-conditioning condition includes: obtaining a target state of the air-conditioning in the vehicle under the air-conditioning condition; and when it is detected that the target state is on, collecting the first actual vibration noise in the vehicle under the air-conditioning condition.

[0008] Optionally, in one embodiment of the present application, respectively obtaining the second actual vibration noise of the blower working alone and the third actual vibration noise of the fan working alone under the air-conditioning condition, includes: detecting whether the target state is an off state; when detecting that the target state is an off state, respectively obtaining the second actual vibration noise of the blower working alone and the third actual vibration noise of the fan working alone under the air-conditioning condition.

[0009] Optionally, in one embodiment of the present application, obtaining the second actual vibration noise when the blower works alone under the air-conditioning condition includes: obtaining blower gear information of the in-vehicle air conditioner; and determining the second actual vibration noise when the blower works alone according to the blower gear information.

[0010] Optionally, in one embodiment of the present application, after collecting the first actual vibration noise in the car under air-conditioning conditions, it also includes: collecting first fan vibration data of the air conditioner in the car, and performing target processing on the first fan vibration data to obtain a first spectrum curve; using the first spectrum curve to obtain a first target fan rotation frequency of the air conditioner in the car.

[0011] Optionally, in one embodiment of the present application, the obtaining of the third actual vibration noise when the fan works alone under the air-conditioning condition includes: collecting vibration data of a second fan of the in-vehicle air conditioner, and performing the target processing on the second fan vibration data to obtain a second spectrum curve; obtaining a second target fan rotation frequency of the in-vehicle air conditioner according to the second spectrum curve; using the first target fan rotation frequency to correct the second target fan rotation frequency to obtain a target fan rotation frequency that meets preset conditions; and determining the third actual vibration noise when the fan works alone according to the target fan rotation frequency.

[0012] A second aspect of the present application provides a noise detection device for an electric compressor, including: a collection module for collecting a first actual vibration noise in a vehicle under air-conditioning conditions; an acquisition module for respectively acquiring a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under the air-conditioning conditions; and a calculation module for calculating a fourth actual vibration noise of the electric compressor based on the first actual vibration noise, the second actual vibration noise and the third actual vibration noise.

[0013] Optionally, in one embodiment of the present application, the acquisition module includes: a first acquisition unit, used to acquire the target state of the air conditioning in the vehicle under the air-conditioning condition; a first acquisition unit, used to collect the first actual vibration noise in the vehicle under the air-conditioning condition when it is detected that the target state is on.

[0014] Optionally, in one embodiment of the present application, the acquisition module includes: a detection unit, used to detect whether the target state is a closed state; a second acquisition unit, used to obtain, when detecting that the target state is a closed state, a second actual vibration noise when the blower works alone under the air-conditioning condition and a third actual vibration noise when the fan works alone.

[0015] Optionally, in one embodiment of the present application, the acquisition module includes: a third acquisition unit, used to acquire the blower gear information of the in-vehicle air conditioner; and a first determination unit, used to determine the second actual vibration noise when the blower works alone according to the blower gear information.

[0016] Optionally, in one embodiment of the present application, the device of the embodiment of the present application also includes: an acquisition module, which is used to collect first fan vibration data of the in-vehicle air conditioner after collecting the first actual vibration noise in the car under air-conditioning conditions, and perform target processing on the first fan vibration data to obtain a first spectrum curve; a determination module, which is used to obtain the first target fan speed frequency of the in-vehicle air conditioner using the spectrum curve after collecting the first actual vibration noise in the car under air-conditioning conditions.

[0017] Optionally, in one embodiment of the present application, the acquisition module includes: a second acquisition unit, used to acquire second fan vibration data of the in-vehicle air conditioner, and perform the target processing on the second fan vibration data to obtain a second spectrum curve; a fourth acquisition unit, used to acquire the second target fan speed frequency of the in-vehicle air conditioner according to the second spectrum curve; a processing unit, used to use the first target fan speed frequency to perform correction processing on the second target fan speed frequency to obtain a target fan speed frequency that meets preset conditions; a second determination unit, used to determine the third actual vibration noise when the fan works alone according to the target fan speed frequency.

[0018] A third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the noise detection method for the electric compressor as described in the above embodiment.

[0019] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned noise detection method for an electric compressor.

[0020] A fifth aspect of the present application provides a computer program product, including a computer program, which, when executed, is used to implement the above-mentioned noise detection method for the electric compressor.

[0021] The embodiment of the present application can determine the noise of the electric compressor when it is working based on the noise inside the vehicle under air-conditioning conditions, the noise when the blower works alone, and the noise when the fan works alone, effectively improving the accuracy and reliability of the vibration and noise test of the electric compressor. Thus, the problem that the test results cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle, and the accuracy and reliability of the vibration and noise test of the electric compressor are reduced in the related art due to the blower and cooling fan always being involved in the test process, is solved.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 A flowchart of a noise detection method for an electric compressor provided according to an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the arrangement of sensors for a vehicle according to a specific embodiment of the present application;

[0026] Figure 3 A schematic diagram of a noise spectrum of the air conditioner in a vehicle according to a specific embodiment of the present application;

[0027] Figure 4 A schematic diagram of a vibration spectrum of a fan motor according to a specific embodiment of the present application;

[0028] Figure 5 A schematic diagram of the noise spectrum of a blower and fan of a vehicle according to a specific embodiment of the present application;

[0029] Figure 6 A schematic diagram of a noise spectrum of a whole vehicle compressor according to a specific embodiment of the present application;

[0030] Figure 7 This is a flow chart of a noise detection method for an electric compressor according to a specific embodiment of the present application;

[0031] Figure 8 It is a structural schematic diagram of a noise detection device for an electric compressor provided according to an embodiment of the present application;

[0032] Fig. 9 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0034] The following describes the noise detection method, device, equipment and storage medium of the electric compressor of the embodiment of the present application with reference to the accompanying drawings. In view of the above-mentioned related technology mentioned in the background technology center, since the blower and the cooling fan are always involved in the test process, the test results cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle, reducing the accuracy and reliability of the vibration and noise test of the electric compressor. The present application provides a noise detection method for an electric compressor. In this method, the noise of the electric compressor when working can be determined based on the noise in the car under air-conditioning conditions, the noise when the blower works alone, and the noise when the fan works alone, which effectively improves the accuracy and reliability of the vibration and noise test of the electric compressor. Thus, the problem that the blower and the cooling fan are always involved in the test process in the related technology cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle, reducing the accuracy and reliability of the vibration and noise test of the electric compressor, etc., is solved.

[0035] Specifically, Figure 1 A schematic flow chart of a noise detection method for an electric compressor provided in an embodiment of the present application.

[0036] like Figure 1 As shown, the noise detection method of the electric compressor includes the following steps:

[0037] In step S101 , the first actual vibration noise in the vehicle under the air-conditioning condition is collected.

[0038] In the embodiment of the present application, the air-conditioning operating condition is a condition in which the air-conditioning in the test vehicle is turned on or off. The present application can be elaborated in detail by taking the in-vehicle noise under the test air-conditioning operating condition as an example.

[0039] It can be understood that the embodiment of the present application can collect the first actual vibration noise in the car under the air-conditioning condition in the following steps. For example, the embodiment of the present application can collect the first actual vibration noise in the car through the in-car sensor when the in-car air-conditioning of the test vehicle is turned on or off, that is, the vibration noise data in the car, which effectively improves the feasibility of electric compressor noise detection.

[0040] For example, Figure 2 As shown, the embodiment of the present application can be provided with a test device, wherein a three-way vibration sensor is arranged at the 12 o'clock position of the steering wheel and the position of the cooling fan motor; a noise sensor, such as the B&K 4189 model, is arranged at the driver's right ear; a 24V regulated power supply and wires; a noise and vibration acquisition device; and a collection computer. Then, the test in the embodiment of the present application can be carried out in a semi-anechoic chamber, or in an environmental chamber with a semi-anechoic chamber, and the in-vehicle sensors are connected to the data acquisition system in turn through connecting lines, and the data acquisition system is connected to the computer, and the data acquisition system is opened and debugged on the computer, so that the actual vibration noise in the vehicle under different working conditions can be tested, which effectively improves the applicability of noise detection.

[0041] Among them, in one embodiment of the present application, collecting the first actual vibration noise in the car under the air-conditioning condition includes: obtaining the target state of the air-conditioning in the car under the air-conditioning condition; when it is detected that the target state is on, collecting the first actual vibration noise in the car under the air-conditioning condition.

[0042] In the embodiment of the present application, the target state is an on state or a off state.

[0043] For example, the embodiment of the present application can obtain the target state of the air conditioner in the vehicle under the air-conditioning working condition. When it is detected that the target state is the on state, that is, the air conditioner of the whole vehicle is turned on, the first actual vibration noise in the vehicle is collected, such as the noise data A1 and vibration data V1 in the vehicle, which effectively improves the feasibility of electric compressor noise detection.

[0044] Optionally, in one embodiment of the present application, after collecting the first actual vibration noise in the car under air-conditioning conditions, it also includes: collecting the first fan vibration data of the air conditioner in the car, and performing target processing on the first fan vibration data to obtain a first spectrum curve; using the first spectrum curve to obtain the first target fan speed frequency of the air conditioner in the car.

[0045] For example, when it is detected that the air conditioner in the car is turned on, the embodiment of the present application can use the fan motor vibration sensor to collect the first fan vibration data V of the air conditioner in the car. f , i.e., the vibration data of the cooling fan, and the first fan vibration data V fFFT (Fast Fourier Transform) processing is performed to convert it into a frequency domain signal to obtain a first spectrum curve, which can clearly show the energy distribution of different frequency components; then, the frequency F corresponding to the first obvious peak on the first spectrum curve can be determined, and it is ensured that the frequencies corresponding to the main peaks after the peak are all integer multiples of the frequency F, wherein the frequency F is the first-order rotation frequency of the fan, and the fan speed R=F*60, so that the embodiment of the present application can obtain the first target fan rotation frequency of the in-vehicle air conditioner. Secondly, the embodiment of the present application can also record the blower gear at this time, such as, the current blower gear is D gear, which effectively improves the accuracy of noise detection of the electric compressor.

[0046] In step S102, a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under air-conditioning conditions are respectively acquired.

[0047] It can be understood that the embodiment of the present application can respectively obtain the second actual vibration noise of the blower working alone and the third actual vibration noise of the fan working alone under the air-conditioning condition in the following steps. For example, the embodiment of the present application can respectively obtain the second actual vibration noise of the blower working alone and the third actual vibration noise of the fan working alone when the air-conditioning in the car is turned off, that is, the actual in-car noise when the air-conditioning in the car is turned off can be obtained, which effectively improves the accuracy of obtaining the actual in-car noise.

[0048] Among them, in one embodiment of the present application, the second actual vibration noise of the blower working alone under air-conditioning conditions and the third actual vibration noise of the fan working alone are respectively obtained, including: detecting whether the target state is the off state; when the target state is detected to be the off state, the second actual vibration noise of the blower working alone under air-conditioning conditions and the third actual vibration noise of the fan working alone are respectively obtained.

[0049] In some embodiments, the embodiment of the present application can respectively obtain the second actual vibration noise when the blower works alone and the third actual vibration noise when the fan works alone when it is detected that the target state of the in-vehicle air conditioner is the off state, and when the vehicle turns off the air conditioner, thereby effectively improving the accuracy of obtaining the blower noise and the fan noise.

[0050] Optionally, in one embodiment of the present application, obtaining the second actual vibration noise when the blower works alone under air-conditioning conditions includes: obtaining blower gear information of the air-conditioning in the vehicle; and determining the second actual vibration noise when the blower works alone according to the blower gear information.

[0051] For example, an embodiment of the present application can obtain the blower gear recorded when the vehicle turns on the air conditioner in the above steps, such as the D gear. Then, the blower gear can be adjusted to the D gear when the vehicle turns off the air conditioner, and the vibration noise of the blower working alone can be collected, thereby effectively improving the accuracy of the vehicle noise test.

[0052] Optionally, in one embodiment of the present application, obtaining a third actual vibration noise when the fan works alone under air-conditioning conditions includes: collecting vibration data of a second fan of the air-conditioning in the vehicle, and performing target processing on the second fan vibration data to obtain a second spectrum curve; obtaining a second target fan rotation frequency of the air-conditioning in the vehicle according to the second spectrum curve; using the first target fan rotation frequency to correct the second target fan rotation frequency to obtain a target fan rotation frequency that meets preset conditions; and determining the third actual vibration noise when the fan works alone according to the target fan rotation frequency.

[0053] For example, when the vehicle air conditioner is turned off, the fan's original vehicle plug can be unplugged, and the fan can be connected to a voltage-stabilized power supply with a wire, and the voltage-stabilized power supply can be turned on to allow the fan to work alone, while collecting the vibration V on the fan motor. n , and V n Perform FFT processing to convert it into a frequency domain signal, obtain the second spectrum curve, and obtain the first-order rotation frequency F of the fan. n ; Then, the output voltage of the regulated power supply can be adjusted, that is, when F n When it is greater than F, the output voltage of the regulated power supply is adjusted down, otherwise it is adjusted up until F n =F, the output voltage regulation is stopped, and the third actual vibration noise is obtained, that is, the vibration noise of the fan working when the rotation frequency is F, which effectively improves the accuracy of obtaining the fan's independent working noise.

[0054] In step S103 , a fourth actual vibration noise of the electric compressor is calculated according to the first actual vibration noise, the second actual vibration noise, and the third actual vibration noise.

[0055] It can be understood that the embodiment of the present application can determine the actual vibration noise when the vehicle air conditioner is turned off, such as the noise data A2 and the vibration data V2 in the vehicle, based on the third actual vibration noise of the fan working alone obtained when the vehicle air conditioner is turned off in the above steps and the second actual vibration noise when the blower is adjusted to the D gear and works alone. For example, the embodiment of the present application can use the in-vehicle noise data A1 tested when the vehicle air conditioner is turned on minus the in-vehicle noise data A2 when the vehicle air conditioner is turned off. Specifically, the noise energy measured in the two states is subtracted. If A1 and A2 are sound pressure levels, then: A1=20lg(p1 / p0), A2=20lg(p2 / p0), the electric compressor noise is: A3=20lg(p3 / p0), where, Similarly, the vibration data V1 of the vehicle interior when the vehicle air conditioner is turned on is subtracted from the vibration data V2 of the vehicle interior when the vehicle air conditioner is turned off, that is, the vibration energy measured in the two states is subtracted, and the vibration of the electric compressor is obtained as follows: Effectively improve the accuracy and reliability of vibration and noise testing of electric compressors.

[0056] Therefore, the embodiments of the present application can compare the vibration and noise levels of the electric compressors of different vehicles under the same environmental conditions, and provide support for the NVH development and benchmarking of the electric compressors; in addition, the embodiments of the present application can also adjust the changes in the external environment in the environmental chamber, scan the vibration and noise data of the electric compressors of the vehicles in various environments, and identify the NVH risk points of the electric compressors under all working conditions in advance by comparing with pre-set objective targets.

[0057] For example, in the embodiment of the present application, in the process of identifying the compressor noise in a certain vehicle model when the air conditioner is turned on, Figure 3 As shown in the figure, it is the noise spectrum of the vehicle interior under the condition of air conditioning on. Figure 4 As shown in the figure, it is the vibration spectrum of the tested fan motor, and the blower gear position in the car is recorded at this time; then, the fan is connected to an external regulated power supply, and the output voltage of the regulated power supply is adjusted to make the measured first-order vibration frequency of the fan motor equal to Figure 4 The first amplitude frequency in is the same, and the blower gear is adjusted to the blower gear recorded in the first step, such as Figure 5 As shown, the car interior noise at this time is tested; finally, the car interior noise numbers tested in the first two steps are calculated and processed to obtain Figure 6 The noise spectrum of the whole vehicle compressor, so that the embodiment of the present application can accurately obtain the vibration noise data of the electric compressor, and is not dependent on the communication protocol and control signal of the whole vehicle electric compressor.

[0058] like Figure 7 As shown, the working principle of the embodiment of the present application is described in detail below with a specific embodiment.

[0059] Step S701: testing the first in-vehicle vibration noise and fan body vibration when the air conditioner is turned on, and recording the blower gear position D.

[0060] Step S702: deriving the fan rotation frequency F according to the fan body vibration data.

[0061] Step S703: The fan is connected to an external power supply, and the output voltage of the voltage-stabilized power supply is adjusted to make the fan rotation frequency Fn=F.

[0062] Step S704: The fan is operated at a rotational frequency F, and the blower is turned on and adjusted to a gear position D, and the vibration noise inside the second vehicle is tested at this time.

[0063] Step S705: The measured second in-vehicle vibration noise and the first in-vehicle vibration noise are used to calculate the vibration noise of the whole vehicle compressor, thereby effectively improving the accuracy of the vibration noise test of the electric compressor.

[0064] According to the noise detection method of the electric compressor proposed in the embodiment of the present application, the noise of the electric compressor when it is working can be determined based on the noise inside the vehicle under air-conditioning conditions, the noise when the blower works alone, and the noise when the fan works alone, which effectively improves the accuracy and reliability of the vibration and noise test of the electric compressor. As a result, the problem that the test results cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle due to the blower and cooling fan always participating in the test process in the related technology is solved, and the accuracy and reliability of the vibration and noise test of the electric compressor are reduced.

[0065] Next, the noise detection device for the electric compressor proposed in the embodiment of the present application is described with reference to the accompanying drawings.

[0066] Figure 8 It is a block diagram of a noise detection device for an electric compressor according to an embodiment of the present application.

[0067] like Figure 8 As shown, the noise detection device 10 for the electric compressor includes: a collection module 100 , an acquisition module 200 and a calculation module 300 .

[0068] Specifically, the collection module 100 is used to collect the first actual vibration noise in the vehicle under the air-conditioning condition.

[0069] The acquisition module 200 is used to respectively acquire the second actual vibration noise when the blower works alone and the third actual vibration noise when the fan works alone under the air-conditioning condition.

[0070] The calculation module 300 is used to calculate a fourth actual vibration noise of the electric compressor according to the first actual vibration noise, the second actual vibration noise and the third actual vibration noise.

[0071] Optionally, in one embodiment of the present application, the acquisition module 100 includes: a first acquisition unit and a first acquisition unit.

[0072] The first acquisition unit is used to acquire the target state of the in-vehicle air conditioner under the air conditioning working condition.

[0073] The first collecting unit is used to collect the first actual vibration noise in the vehicle under the air-conditioning condition when it is detected that the target state is the on state.

[0074] Optionally, in one embodiment of the present application, the acquisition module 200 includes: a detection unit and a second acquisition unit.

[0075] The detection unit is used to detect whether the target state is a closed state.

[0076] The second acquisition unit is used to respectively acquire a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under air-conditioning conditions when the target state is detected to be the off state.

[0077] Optionally, in one embodiment of the present application, the acquisition module 200 includes: a third acquisition unit and a first determination unit.

[0078] The third acquisition unit is used to acquire the blower gear position information of the air conditioner in the vehicle.

[0079] The first determination unit is used to determine a second actual vibration noise when the blower works alone according to the blower gear information.

[0080] Optionally, in one embodiment of the present application, the device 10 of the embodiment of the present application further includes: a collection module and a determination module.

[0081] Among them, the acquisition module is used to collect the first fan vibration data of the air conditioner in the car after collecting the first actual vibration noise in the car under the air-conditioning condition, and perform target processing on the first fan vibration data to obtain a first frequency spectrum curve.

[0082] The determination module is used to obtain a first target fan rotation frequency of the in-vehicle air conditioner using the frequency spectrum curve after collecting a first actual vibration noise in the vehicle under air-conditioning working conditions.

[0083] Optionally, in an embodiment of the present application, the acquisition module 200 includes: a second acquisition unit, a fourth acquisition unit, a processing unit and a second determination unit.

[0084] The second acquisition unit is used to acquire vibration data of a second fan of the in-vehicle air conditioner, and perform the target processing on the vibration data of the second fan to obtain a second frequency spectrum curve.

[0085] The fourth acquisition unit is used to acquire a second target fan rotation frequency of the in-vehicle air conditioner according to the second frequency spectrum curve.

[0086] The processing unit is configured to use the first target fan rotation frequency to perform correction processing on the second target fan rotation frequency to obtain a target fan rotation frequency that meets a preset condition.

[0087] The second determining unit is configured to determine, according to the target fan rotation frequency, the third actual vibration noise when the fan works alone.

[0088] It should be noted that the above explanation of the embodiment of the noise detection method for an electric compressor is also applicable to the noise detection device for an electric compressor of this embodiment, and will not be repeated here.

[0089] According to the noise detection device for the electric compressor proposed in the embodiment of the present application, the noise of the electric compressor when it is working can be determined based on the noise inside the vehicle under air-conditioning conditions, the noise when the blower works alone, and the noise when the fan works alone, which effectively improves the accuracy and reliability of the vibration and noise test of the electric compressor. As a result, the problem that the test results cannot accurately reflect the vibration and noise level of the compressor on the whole vehicle due to the blower and cooling fan always participating in the test process in the related technology is solved, and the accuracy and reliability of the vibration and noise test of the electric compressor are reduced.

[0090] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0091] A memory 901 , a processor 902 , and a computer program stored in the memory 901 and executable on the processor 902 .

[0092] When the processor 902 executes the program, the noise detection method for the electric compressor provided in the above embodiment is implemented.

[0093] Furthermore, the electronic device further comprises:

[0094] The communication interface 903 is used for communication between the memory 901 and the processor 902 .

[0095] The memory 901 is used to store computer programs that can be executed on the processor 902 .

[0096] The memory 901 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0097] If the memory 901, the processor 902 and the communication interface 903 are implemented independently, the communication interface 903, the memory 901 and the processor 902 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0098] Optionally, in a specific implementation, if the memory 901, the processor 902 and the communication interface 903 are integrated on a chip, the memory 901, the processor 902 and the communication interface 903 can communicate with each other through an internal interface.

[0099] The processor 902 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0100] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the noise detection method for the electric compressor as described above is implemented.

[0101] This embodiment also provides a computer program product, including a computer program, which is used to implement the above noise detection method for the electric compressor when the computer program is executed.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0103] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0104] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0105] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0106] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0107] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0108] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0109] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A noise detection method for an electric compressor, characterized in that: The following steps are involved: Collecting the first actual vibration noise in the car under air-conditioning conditions; Respectively obtaining a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under the air-conditioning working condition; A fourth actual vibration noise of the electric compressor is calculated based on the first actual vibration noise, the second actual vibration noise, and the third actual vibration noise.

2. The method according to claim 1, characterized in that The collecting of the first actual vibration noise in the vehicle under the air-conditioning working condition includes: Obtaining a target state of the in-vehicle air conditioner under the air conditioning working condition; When it is detected that the target state is the on state, a first actual vibration noise in the vehicle under the air-conditioning working condition is collected.

3. The method according to claim 2, characterized in that The step of respectively obtaining a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under the air-conditioning working condition comprises: Detecting whether the target state is a closed state; When it is detected that the target state is the off state, a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under the air-conditioning working condition are respectively obtained.

4. The method according to claim 3, characterized in that The obtaining of a second actual vibration noise when the blower works alone under the air-conditioning condition comprises: Obtaining the blower gear information of the in-vehicle air conditioner; A second actual vibration noise when the blower works alone is determined according to the blower gear information.

5. The method according to claim 2, characterized in that: After collecting the first actual vibration noise in the vehicle under the air-conditioning condition, the method further includes: Collecting vibration data of a first fan of the in-vehicle air conditioner, and performing target processing on the vibration data of the first fan to obtain a first frequency spectrum curve; The first frequency spectrum curve is used to obtain a first target fan rotation frequency of the in-vehicle air conditioner.

6. The method according to claim 5, characterized in that The obtaining of a third actual vibration noise when the fan works alone under the air-conditioning working condition comprises: collecting vibration data of a second fan of the in-vehicle air conditioner, and performing the target processing on the vibration data of the second fan to obtain a second frequency spectrum curve; Acquire a second target fan rotation frequency of the in-vehicle air conditioner according to the second frequency spectrum curve; Using the first target fan rotation frequency to correct the second target fan rotation frequency, so as to obtain a target fan rotation frequency that meets a preset condition; The third actual vibration noise when the fan works alone is determined according to the target fan rotation frequency.

7. A noise detection device for an electric compressor, characterized in that: include: A collection module, used for collecting a first actual vibration noise in the vehicle under air-conditioning conditions; An acquisition module, used to respectively acquire a second actual vibration noise when the blower works alone and a third actual vibration noise when the fan works alone under the air-conditioning working condition; The calculation module is used to calculate a fourth actual vibration noise of the electric compressor according to the first actual vibration noise, the second actual vibration noise and the third actual vibration noise.

8. The device according to claim 7, characterized in that The acquisition module comprises: an acquisition unit, used to acquire a target state of the in-vehicle air conditioner under the air conditioning working condition; The collecting unit is used to collect the first actual vibration noise in the vehicle under the air-conditioning working condition when it is detected that the target state is the on state.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the noise detection method for the electric compressor according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the noise detection method for an electric compressor as described in any one of claims 1 to 5.

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