Method and system for detecting state of hydrodynamic transmission

Abstract

The invention discloses a hydrodynamic transmission state detection method and system, and the method comprises the following steps: S1, configuring a recording module, and collecting a real-time audio file through the recording module; s2, processing the real-time audio file to obtain real-time audio data and a sound oscillogram; s3, sending a transmission request to a server; s4, loading the sound model through the server; s5, the real-time sound data and the sound model are compared, the type of the real-time sound data is judged, and the state of the hydrodynamic transmission is obtained; and S6, the sound oscillogram and the state of the hydrodynamic transmission are displayed, and the state of the hydrodynamic transmission is broadcasted through voice. The state of the hydrodynamic transmission is determined by collecting the sound signals, constructing the sound model and comparing the real-time audio data with the sound model, and the state of the hydrodynamic transmission is displayed simply and clearly. The method has the advantages of being short in development period, capable of achieving remote detection, capable of saving economic cost and capable of improving working efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of transmission state detection, and in particular relates to a method and system for detecting the state of a hydraulic transmission. Background Art

[0002] The hydraulic transmission is a transmission device and an important component of a car. If the hydraulic transmission fails during driving, it will cause safety hazards. Therefore, a hydraulic transmission state detection method or system is needed to detect the hydraulic transmission failure in time, that is, to detect the state of the hydraulic transmission at all times.

[0003] To detect the status of the hydraulic transmission at all times, it is necessary to collect information, which mainly includes: 1. The collected information can accurately reflect the status of the hydraulic transmission; 2. The collected information must be able to fully reflect the actual situation of the detection object. At the same time, the detection method must be able to continuously, accurately and quickly reflect the actual status of the hydraulic transmission. If this requirement is not met, the designed hydraulic transmission status detection method will become meaningless.

[0004] In the prior art, hydraulic transmission detection is generally achieved by collecting gear speed information or hydraulic pressure information of the transmission, but the sensors for collecting this information are relatively complex and the installation is also relatively complex, and the installation position needs to be reserved in advance, which is costly. Different types of transmissions require corresponding adjustments, and the development cycle is long.

[0005] For example, the Chinese patent with the announcement number CN116793667B discloses a transmission gear meshing state detection method and detection device, which calculates the amplitude ratio of the angular acceleration of the driving gear and the driven gear in the time domain according to the rotation speed of the driving gear and the driven gear, and can confirm the meshing state of the transmission gear; when it is confirmed that the meshing state of the transmission gear is a disengaged state, the specific disengaged state type of the transmission gear can be obtained according to the harmonic amplitude trend of the angular acceleration of the driven gear at each order of harmonic frequency in the frequency domain. This patent can accurately obtain the state of the transmission gear, but when it is only necessary to determine whether it is operating normally, this patent needs to be installed in the transmission gear in advance, which is not convenient for later addition, and the structure is complex and the cost is high. The amount of calculation is large, and when developing different types of transmissions, a long development period is required for adaptation.

[0006] For example, the Chinese patent with publication number CN118224296A discloses a hydraulic system pressure detection method, device, electronic device and storage medium, which relates to the field of vehicle technology. The hydraulic system pressure detection method includes: when each component in the hydraulic system stops working, obtaining the system pressure detection value in the hydraulic system; when the atmospheric pressure sensor is faulty, the atmospheric pressure value detected by the atmospheric pressure sensor when it is operating normally is used to calibrate the system pressure detection value, and obtain the actual value of the system pressure of the hydraulic system; when the atmospheric pressure sensor is not faulty, the actual atmospheric pressure value of the hydraulic system at the location detected by the atmospheric pressure sensor is used to calibrate the system pressure detection value, and obtain the actual value of the system pressure of the hydraulic system. This patent can judge the state of the transmission according to the system pressure of the hydraulic system. Similarly, it needs to be installed in the transmission hydraulic system in advance, which is not convenient for later addition, and the structure is complex and the cost is high. At the same time, when developing different types of transmissions, it is necessary to adjust the calculation formula of the hydraulic system first, so as to adjust the calculation formula of the transmission state judgment, which also requires a long development period for adaptation. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a method and system for detecting the state of a hydraulic transmission.

[0008] The present invention is achieved through the following technical solutions.

[0009] The present invention provides a method for detecting a state of a hydraulic transmission, comprising the following steps:

[0010] S1. Configure the recording module to collect real-time audio files through the recording module;

[0011] S2, process the real-time audio file to obtain real-time audio data and sound waveform;

[0012] S3, sending a transmission request to the server;

[0013] S4, loading the sound model through the server;

[0014] S5, comparing the real-time sound data with the sound model, determining the type of the real-time sound data, and obtaining the state of the hydraulic transmission;

[0015] S6. Display the sound waveform and hydraulic transmission status, and voice broadcast the hydraulic transmission status.

[0016] Preferably, configuring the recording module specifically refers to: installing a software recording program and connecting a recording device.

[0017] Preferably, the step S2, processing the real-time audio file and obtaining the real-time audio data and the sound waveform graph, comprises the following steps:

[0018] S21, obtaining a timestamp through a real-time audio file;

[0019] S22, inputting the real-time audio file into the sound template through the timestamp trigger, and obtaining the real-time audio data and the sound waveform;

[0020] S23. The real-time audio data is input into the regression test unit to test the real-time audio data and convert the format of the real-time audio data.

[0021] Preferably, the server supports https transmission protocol.

[0022] Preferably, before loading the sound model, the construction of the sound model includes the following steps:

[0023] S41, configuring a recording module, and collecting template training audio files through the recording module;

[0024] S42, processing the template training audio file to obtain template training audio data;

[0025] S43, naming the template training audio file, obtaining the sound model, and storing the sound model.

[0026] Preferably, the types of the naming template training audio files include: normal operation and failure.

[0027] A hydraulic transmission state detection system, used to implement the above hydraulic transmission state detection method, comprises:

[0028] Recording module: used to collect audio files;

[0029] Data processing module: used to process audio files, obtain audio data and waveforms, and compare audio data with sound models;

[0030] Server: used to transmit data and load sound models;

[0031] Display module: used to display the hydraulic transmission status and sound waveform;

[0032] Voice broadcast module: used for voice broadcast of hydraulic transmission status.

[0033] Preferably, the data processing module supports programming using Node-Red software;

[0034] The display module supports display using Node-Red software.

[0035] Preferably, the data processing module includes:

[0036] Sound template: used to process audio files and obtain audio data and waveforms;

[0037] Regression test unit: used to test audio data and convert audio data format.

[0038] The beneficial effects of the present invention are:

[0039] By collecting sound signals, constructing a sound model, and comparing real-time audio data with the sound model, the state of the hydraulic transmission is determined, and the state of the hydraulic transmission is simply and clearly displayed. The present invention has the characteristics of short development period, remote detection, economic cost saving, and improved work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of a method provided by an embodiment of the present invention;

[0041] Figure 2 It is a schematic diagram of the system structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0043] like Figure 1 As shown, a method for detecting a hydraulic transmission state comprises the following steps:

[0044] S1. Configure the recording module to collect real-time audio files through the recording module;

[0045] The configuration of the recording module specifically refers to: installing a software recording program and connecting a recording device.

[0046] In this embodiment, Raspberry Pi is used as the data processing module. Raspberry Pi cannot record audio. Therefore, Python recording is required in this embodiment. The pyaudio module is installed as the software recording program, and an external microphone is used as the recording device.

[0047] S2, process the real-time audio file to obtain real-time audio data and sound waveform;

[0048] The S2, processing the real-time audio file, obtaining the real-time audio data and the sound waveform diagram comprises the following steps:

[0049] S21, obtaining a timestamp through a real-time audio file;

[0050] S22, inputting the real-time audio file into the sound template through the timestamp trigger, and obtaining the real-time audio data and the sound waveform;

[0051] S23. The real-time audio data is input into the regression test unit to test the real-time audio data and convert the format of the real-time audio data.

[0052] In this embodiment, when converting the real-time audio data format, the output is in spawn mode and the return value is stream, which facilitates the calculation of the set.

[0053] S3, sending a transmission request to the server;

[0054] The server supports the https transmission protocol.

[0055] S4, loading the sound model through the server;

[0056] Before loading the sound model, the construction of the sound model includes the following steps:

[0057] S41, configuring a recording module, and collecting template training audio files through the recording module;

[0058] In this embodiment, step S41 is the same as step S1, using Python for recording, installing the pyaudio module as a software recording program, and connecting an external microphone as a recording device.

[0059] S42, processing the template training audio file to obtain template training audio data;

[0060] S43, naming the template training audio file, obtaining the sound model, and storing the sound model.

[0061] The types of the named template training audio files include: normal operation and failure.

[0062] S5, comparing the real-time sound data with the sound model, determining the type of the real-time sound data, and obtaining the state of the hydraulic transmission;

[0063] S6. Display the sound waveform and hydraulic transmission status, and voice broadcast the hydraulic transmission status.

[0064] A hydraulic transmission state detection system, used to implement the above hydraulic transmission state detection method, comprises:

[0065] Recording module: used to collect audio files;

[0066] Data processing module: used to process audio files, obtain audio data and waveforms, and compare audio data with sound models;

[0067] The data processing module supports programming using Node-Red software;

[0068] Node-Red is a powerful tool for building IoT applications, focusing on simplifying the "connection" of code blocks to perform tasks. Integrate repetitive programming work into individual nodes, but when certain functions need to be implemented, you can quickly and conveniently drag and call related nodes to implement them. When it is found that the existing modules cannot solve the problem, new modules can also be installed in the node management. For example, the dashboard module, a visual interface that needs to be used in the present invention, needs to be installed by yourself, and it will automatically appear on the left side of the window after the installation is complete.

[0069] The data processing module comprises:

[0070] Sound template: used to process audio files and obtain audio data and waveforms;

[0071] Regression test unit: used to test audio data and convert audio data format.

[0072] Server: used to transmit data and load sound models;

[0073] Display module: used to display the hydraulic transmission status and sound waveform;

[0074] In this embodiment, the display module is implemented using the dashboard module of the visualization interface in the Node-Red software.

[0075] The display module supports display using Node-Red software.

[0076] Voice broadcast module: used for voice broadcast of hydraulic transmission status.

[0077] The present invention collects sound signals, constructs a sound model, compares real-time audio data with the sound model, determines the state of the hydraulic transmission, and simply and clearly displays the state of the hydraulic transmission. The present invention has the characteristics of short development period, remote detection, cost saving, and improved work efficiency.

Claims

1. A method for detecting a hydraulic transmission state, characterized in that: The following steps are involved: S1. Configure the recording module to collect real-time audio files through the recording module; S2, process the real-time audio file to obtain real-time audio data and sound waveform; S3, sending a transmission request to the server; S4, loading the sound model through the server; S5, comparing the real-time sound data with the sound model, determining the type of the real-time sound data, and obtaining the state of the hydraulic transmission; S6. Display the sound waveform and hydraulic transmission status, and voice broadcast the hydraulic transmission status.

2. The method for detecting the state of a hydraulic transmission according to claim 1, characterized in that: The configuration of the recording module specifically refers to: installing a software recording program and connecting a recording device.

3. The method for detecting the state of a hydraulic transmission according to claim 1, characterized in that: The S2, processing the real-time audio file, obtaining the real-time audio data and the sound waveform diagram comprises the following steps: S21, obtaining a timestamp through a real-time audio file; S22, inputting the real-time audio file into the sound template through the timestamp trigger, and obtaining the real-time audio data and the sound waveform; S23. The real-time audio data is input into the regression test unit to test the real-time audio data and convert the format of the real-time audio data.

4. The method for detecting the state of a hydraulic transmission according to claim 1, characterized in that: The server supports the https transmission protocol.

5. The method for detecting the state of a hydraulic transmission according to claim 1, characterized in that: Before loading the sound model, the construction of the sound model includes the following steps: S41, configuring a recording module, and collecting template training audio files through the recording module; S42, processing the template training audio file to obtain template training audio data; S43, naming the template training audio file, obtaining the sound model, and storing the sound model.

6. The method for detecting the state of a hydraulic transmission according to claim 4, characterized in that: The types of the named template training audio files include: normal operation and failure.

7. A hydraulic transmission state detection system, characterized in that: A method for detecting a hydraulic transmission state according to any one of claims 1 to 6, comprising: Recording module: used to collect audio files; Data processing module: used to process audio files, obtain audio data and waveforms, and compare audio data with sound models; Server: used to transmit data and load sound models; Display module: used to display the hydraulic transmission status and sound waveform; Voice broadcast module: used for voice broadcast of hydraulic transmission status.

8. The hydraulic transmission state detection system according to claim 7, characterized in that: The data processing module supports programming using Node-Red software; The display module supports display using Node-Red software.

9. The hydraulic transmission state detection system according to claim 7, characterized in that: The data processing module comprises: Sound template: used to process audio files and obtain audio data and waveforms; Regression test unit: used to test audio data and convert audio data format.

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