Automobile audio fault processing system and processing method thereof

Abstract

The invention provides an automobile audio fault processing system and a processing method thereof, and belongs to the technical field of automobile audio fault processing, during working, a processing module sends a first digital audio signal to an audio decoding module, a first analog audio signal is obtained after decoding, and the first analog audio signal is output to the processing module and a power amplifier module. The processing module detects the first analog audio signal and judges whether the audio decoding module decodes successfully. If not, fault information is transmitted to the main controller; and if successful, the power amplifier module amplifies the signal and drives the audio output module to produce sound. The audio receiving module collects sound to obtain a second analog audio signal, and the second analog audio signal is converted into a second digital audio signal to be input into the processing module. The processing module compares the two digital audio signals, and if the two digital audio signals are consistent, no fault exists; if not, each module is detected through the vehicle-mounted diagnosis system, and fault information is output to the vehicle-mounted display screen through the main controller. Fault detection is comprehensive, and part of faults can be automatically solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive audio fault handling. Specifically, the present invention relates to an automotive audio fault handling system and a handling method thereof. Background Art

[0002] With the development of automotive technology, automotive audio has become increasingly intelligent. Intelligence often comes with complex structures, and the fault detection and handling of audio have attracted the attention of automotive manufacturers.

[0003] Chinese Patent 115022442B discloses an audio fault time positioning method, an electronic device, and a storage medium. The audio fault time positioning method includes: a first electronic device stores audio data in a PCM file during the process of playing the audio data, and the attribute value of the PCM file includes the file creation time. A second electronic device parses the PCM file stored in the first electronic device, determines the relative time when a first audio fault occurs in the PCM file, and determines the absolute time when the first audio fault occurs according to the relative time and the file creation time. The first electronic device can be a mobile phone, and the second electronic device can be a personal computer.

[0004] The existing technology for audio fault detection methods is not comprehensive and detailed enough, which will result in ineffective detection of automotive audio faults. Summary of the Invention

[0005] The present invention aims to provide an automotive audio fault handling system and a handling method thereof to achieve the technical purpose of comprehensively detecting the automotive audio system and timely discovering the causes of automotive audio faults.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides an automotive audio fault handling system, including an audio receiving module, a preprocessing module, a processing module, an audio decoding module, a power amplifier module, an audio output module, an on-vehicle diagnostic system, a main controller, and an on-vehicle display screen. The output end of the audio receiving module is connected to the input end of the preprocessing module, the output end of the preprocessing module is connected to the input end of the processing module, the processing module is connected to the audio decoding module, the output end of the processing module is connected to the input end of the power amplifier module, the output end of the audio decoding module is connected to the input end of the power amplifier module, the output end of the power amplifier module is connected to the input end of the audio output module, the output end of the processing module is connected to the input end of the on-vehicle diagnostic system, the on-vehicle diagnostic system is respectively connected to the audio receiving module, the preprocessing module, the power amplifier module, and the audio output module, the output end of the on-vehicle diagnostic system is connected to the input end of the main controller, the main controller is connected to the processing module, and the output end of the main controller is connected to the input end of the on-vehicle display screen.

[0008] The processing module outputs a first digital audio signal to the audio decoding module. The audio decoding module respectively outputs a first analog audio signal to the processing module and the power amplifier module. The power amplifier module outputs the amplified first analog audio signal to the audio output module. The audio receiving module inputs a second analog audio signal to the preprocessing module. The preprocessing module outputs a second digital audio signal to the processing module. The processing module outputs a control instruction to the on-vehicle diagnostic system. The on-vehicle diagnostic system respectively outputs diagnostic instructions to the audio receiving module, the preprocessing module, the power amplifier module and the audio output module. The audio receiving module, the preprocessing module, the power amplifier module and the audio output module respectively output fault information to the on-vehicle diagnostic system. The on-vehicle diagnostic system outputs the fault information to the main controller. The main controller outputs a control instruction to the processing module. The main controller outputs the fault information to the on-vehicle display screen.

[0009] The audio receiving module uses a microphone, and the output end of the microphone is connected to the input end of the preprocessing module.

[0010] The processing module uses an automotive audio host chip. The output end of the preprocessing module is connected to the input end of the automotive audio host chip. The automotive audio host chip is connected to the audio decoding module. The output end of the automotive audio host chip is connected to the input end of the power amplifier module.

[0011] The audio output module uses a speaker, and the output end of the power amplifier module is connected to the input end of the speaker.

[0012] The present invention provides a fault handling method for an automotive audio fault handling system:

[0013] Step 1: The processing module sends a first digital audio signal to the audio decoding module. The audio decoding module converts the digital audio signal to obtain a first analog audio signal, and the audio decoding module respectively outputs the first analog audio signal to the processing module and the power amplifier module;

[0014] Step 2: The processing module detects the first analog audio signal to determine whether the audio decoding module has successfully decoded. When the processing module determines that the audio decoding module has failed to decode, it transmits the fault information to the main controller; if it is determined that the audio decoding module has successfully decoded, then proceed to the next step;

[0015] Step 3: The power amplifier module amplifies the input first analog audio signal to drive the audio output module to emit sound;

[0016] Step 4: The audio receiving module collects the sound emitted by the audio output module to obtain a second analog audio signal. The preprocessing module converts the second analog audio signal to obtain a second digital audio signal and inputs it to the processing module;

[0017] Step 5: The processing module compares the second digital audio signal with the first digital audio signal. If they are the same, it indicates that there is no fault. If they are different, the processing module uses the on-vehicle diagnostic system to detect the audio receiving module, the preprocessing module, the power amplifier module, and the audio output module respectively, and outputs the fault information to the main controller, which then outputs the fault information to the on-vehicle display screen.

[0018] In Step 2, the processing module compares the first analog audio signal with the analog signal obtained by decoding the first digital audio signal by the processing module to determine whether the audio decoding module has successfully decoded.

[0019] In Step 2, when the processing module determines that the audio decoding module has failed to decode, the processing module performs a reset operation on the audio decoding module and jumps back to Step 1.

[0020] In Step 5, when the on-vehicle diagnostic system detects a fault in the power amplifier module, the processing module performs a reset operation on the power amplifier module and controls the on-vehicle diagnostic system to detect the power amplifier module again.

[0021] The technical effects of the present invention are as follows:

[0022] (1) The present invention comprehensively detects audio faults, helps drivers and maintenance personnel quickly determine the fault location, and can automatically eliminate some faults at the same time.

[0023] (2) The present invention compares the analog audio signal output by the audio decoding module with the analog signal obtained by its own decoding through the processing module, can quickly determine whether the audio decoding module has successfully decoded. If they are different, it can accurately locate the fault of the audio decoding module. In the subsequent detection of the audio receiving module, the preprocessing module, the power amplifier module, and the audio output module, the key parameters of each module are detected respectively, and independent detection is carried out through different automotive electronic control units to further accurately determine the specific location where the fault occurs, facilitating maintenance personnel to quickly solve the problem.

[0024] (3) When the audio decoding module freezes or crashes and causes decoding failure, the processing module performs a reset operation on it and re-detects, enabling the audio decoding module to resume normal operation and ensuring the normal decoding and subsequent playback of the audio signal. Similarly, when the main controller detects a fault in the power amplifier module, such as abnormal volume or freezing, the processing module resets the power amplifier module and re-detects it, enabling it to resume normal operation and ensuring that the audio can be stably and continuously output, providing a good audio playback experience for users.

[0025] (4) The on-vehicle diagnostic system of the present invention monitors the working status of each key module of the audio system in real time. Once an abnormality is detected, it immediately performs fault detection and handling, and attempts to automatically repair the fault through operations such as resetting, reducing the overall vehicle function abnormality caused by the audio system fault, improving the reliability and stability of the automotive audio system, and reducing the system failure rate.

[0026] (5) After receiving the fault information, the main controller outputs the fault information to the on-vehicle display screen in a timely manner for display, prompting the driver that there is a fault in the audio system, enabling the driver to timely understand the working status of the vehicle audio system, avoiding being troubled due to ignorance, and enhancing the overall user experience and safety of the vehicle. Description of the Drawings

[0027] This specification includes the following drawings, and the shown contents are respectively:

[0028] Figure 1 It is a logic structure block diagram of an automotive audio fault processing system and its processing method of the present invention;

[0029] Figure 1 In the figure, the markings are: 1, audio receiving module; 2, preprocessing module; 3, processing module; 4, audio decoding module; 5, power amplifier module; 6, audio output module; 7, on-vehicle diagnostic system; 8, main controller; 9, on-vehicle display screen. Detailed Embodiments

[0030] The following is a more detailed description of the specific embodiments of the present invention with reference to the drawings through the description of the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and contribute to its implementation.

[0031] The present invention provides an automotive audio fault processing system, including an audio receiving module 1, a preprocessing module 2, a processing module 3, an audio decoding module 4, a power amplifier module 5, an audio output module 6, an on-vehicle diagnostic system 7, a main controller 8, and an on-vehicle display screen 9. The output end of the audio receiving module 1 is connected to the input end of the preprocessing module 2, the output end of the preprocessing module 2 is connected to the input end of the processing module 3, the processing module 3 is connected to the audio decoding module 4, the output end of the processing module 3 is connected to the input end of the power amplifier module 5, the output end of the audio decoding module 4 is connected to the input end of the power amplifier module 5, the output end of the power amplifier module 5 is connected to the input end of the audio output module 6, the output end of the processing module 3 is connected to the input end of the on-vehicle diagnostic system 7, the on-vehicle diagnostic system 7 is respectively connected to the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6, the output end of the on-vehicle diagnostic system 7 is connected to the input end of the main controller 8, the main controller 8 is connected to the processing module 3, and the output end of the main controller 8 is connected to the input end of the on-vehicle display screen 9.

[0032] The processing module 3 outputs a first digital audio signal to the audio decoding module 4. The audio decoding module 4 outputs a first analog audio signal to the processing module 3 and the power amplifier module 5 respectively. The power amplifier module 5 outputs the amplified first analog audio signal to the audio output module 6. The audio receiving module 1 inputs a second analog audio signal to the preprocessing module 2. The preprocessing module 2 outputs a second digital audio signal to the processing module 3. The processing module 3 outputs a control instruction to the on-vehicle diagnostic system 7. The on-vehicle diagnostic system 7 outputs diagnostic instructions to the audio receiving module 1, the preprocessing module 2, the power amplifier module 5 and the audio output module 6 respectively. The audio receiving module 1, the preprocessing module 2, the power amplifier module 5 and the audio output module 6 output fault information to the on-vehicle diagnostic system 7 respectively. The on-vehicle diagnostic system 7 outputs the fault information to the main controller 8. The main controller 8 outputs a control instruction to the processing module 3. The main controller 8 outputs the fault information to the on-vehicle display screen 9.

[0033] The audio receiving module 1 uses a microphone, and the output end of the microphone is connected to the input end of the preprocessing module 2. The processing module 3 uses an automotive audio host chip. The output end of the preprocessing module 2 is connected to the input end of the automotive audio host chip. The automotive audio host chip is connected to the audio decoding module 4. The output end of the automotive audio host chip is connected to the input end of the power amplifier module 5. The audio output module 6 uses a speaker, and the output end of the power amplifier module 5 is connected to the input end of the speaker.

[0034] The present invention provides a fault handling method for an automotive audio fault handling system:

[0035] Step 1: The processing module 3 sends a first digital audio signal to the audio decoding module 4. The audio decoding module 4 converts the digital audio signal to obtain a first analog audio signal. The audio decoding module 4 outputs the first analog audio signal to the processing module 3 and the power amplifier module 5 respectively.

[0036] Step 2: The processing module 3 detects the first analog audio signal to determine whether the audio decoding module 4 has successfully decoded. When the processing module 3 determines that the audio decoding module 4 has failed to decode, it transmits the fault information to the main controller 8; if it is determined that the audio decoding module 4 has successfully decoded, it proceeds to the next step.

[0037] Step 3: The power amplifier module 5 amplifies the input first analog audio signal to drive the audio output module 6 to emit sound.

[0038] Step 4: The audio receiving module 1 collects the sound emitted by the audio output module 6 to obtain a second analog audio signal. The preprocessing module 2 converts the second analog audio signal to obtain a second digital audio signal and inputs it to the processing module 3.

[0039] Step 5: The processing module 3 compares the second digital audio signal with the first digital audio signal. If they are the same, it indicates that there is no fault. If they are different, the processing module 3 uses the on-vehicle diagnostic system 7 to detect the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6 respectively, and outputs the fault information to the main controller 8, and the main controller 8 outputs the fault information to the on-vehicle display screen 9.

[0040] In step 2, the processing module 3 compares the first analog audio signal with the analog signal obtained by decoding the first digital audio signal by the processing module 3 to determine whether the audio decoding module 4 has successfully decoded.

[0041] In step 2, when the processing module 3 determines that the audio decoding module 4 fails to decode, the processing module 3 performs a reset operation on the audio decoding module 4 and jumps to step 1.

[0042] In step 5, when the on-vehicle diagnostic system 7 detects a fault in the power amplifier module 5, the processing module 3 performs a reset operation on the power amplifier module 5 and controls the on-vehicle diagnostic system 7 to detect the power amplifier module 5 again.

[0043] The following details a vehicle audio fault processing system and its processing method according to the present invention.

[0044] A vehicle audio fault processing system according to the present invention includes an audio receiving module 1, a preprocessing module 2, a processing module 3, an audio decoding module 4, a power amplifier module 5, an audio output module 6, an on-vehicle diagnostic system 7, a main controller 8, and an on-vehicle display screen 9. The audio receiving module 1 uses a microphone to collect the sound emitted by the audio output module 6 and prepares for the subsequent processing module 3 to determine whether a vehicle audio system fails. The audio receiving module 1 in the present invention automatically receives the sound, replaces the human ear to judge the fault, and at the same time meets the requirement of automatically judging the fault, improving the accuracy of fault judgment.

[0045] The preprocessing module 2 is used to process the second analog audio signal collected by the audio receiving module 1. Specifically, the second analog audio signal is amplified and filtered, and then the second analog audio signal is converted into a second digital audio signal and input into the processing module 3. In the present invention, the preprocessing module 2 provides amplification and filtering for the second analog audio signal, improving the audio quality, laying a foundation for subsequent fault judgment, and improving the accuracy of fault judgment. The preprocessing module 2 uses an audio codec chip.

[0046] The processing module 3 uses an automotive audio host chip to detect the audio decoding module 4. Specifically, the processing module 3 sends a first digital audio signal to the audio decoding module 4. The audio decoding module 4 converts the first digital audio signal into a first analog audio signal and inputs it to the processing module 3. The processing module 3 converts the first analog audio signal into a digital audio signal and compares this digital audio signal with the first digital audio signal to determine whether the audio decoding module 4 has successfully decoded. At the same time, the processing module 3 can control the reset of the audio decoding module 4 and the power amplifier module 5. The automotive audio host chip in the embodiment of the present invention is a TMS320 series chip of Texas Instruments.

[0047] The audio decoding module 4 uses an audio decoding chip to decode the first digital audio signal sent by the processing module 3 and outputs the decoded first analog audio signal to the processing module 3 and the power amplifier module 5 respectively. The audio decoding module 4 in the embodiment of the present invention is a CS42L52 chip.

[0048] The power amplifier module 5 uses a class AB power amplifier to amplify the first analog audio signal input by the audio decoding module 4 and drive the audio output module 6 to emit sound. The audio output module 6 uses a speaker to emit sound. The class AB power amplifier adopted by the present invention has the advantages of low distortion and strong adaptability.

[0049] The on-vehicle diagnostic system 7 includes sensors and an automotive electronic control unit. The sensors are used to detect the parameters of the device under test, and the automotive electronic control unit is used to judge faults. The on-vehicle diagnostic system 7 of the present invention detects the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6. Specifically, the automotive electronic control unit corresponding to the audio receiving module 1 detects the audio receiving module 1 through a voltage sensor and a current sensor to judge whether a fault has occurred; the automotive electronic control unit corresponding to the preprocessing module 2 detects the audio receiving module 1 through a voltage sensor, a current sensor, and a bus to judge whether a fault has occurred. The automotive electronic control unit corresponding to the power amplifier module 5 detects the audio receiving module 1 through a voltage sensor, a current sensor, and a temperature sensor to judge whether a fault has occurred. The automotive electronic control unit corresponding to the audio output module 6 detects the audio receiving module 1 through a voltage sensor and a current sensor to judge whether a fault has occurred. The on-vehicle diagnostic module transmits the fault information to the main controller 8.

[0050] The main controller 8 is used to receive the fault information input by the processing module 3 and the on-vehicle diagnostic system 7 and display the fault information on the on-vehicle display screen 9, and reset the power amplifier module 5 through the processing module 3 when a fault occurs in the power amplifier module 5. The main controller 8 in the embodiment of the present invention adopts Lingdu MIB866C.

[0051] The connection relationship of an automotive audio fault handling system according to the present invention will be described in detail below.

[0052] The output end of the microphone is connected to the input end of the audio codec chip. The output end of the audio codec chip is connected to the input end of the automotive audio host chip. The automotive audio host chip is connected to the audio decoding chip. The output end of the automotive audio host chip is connected to the input end of the class AB power amplifier. The output end of the automotive audio host chip is connected to the input end of the on-vehicle diagnostic system 7. The on-vehicle diagnostic system 7 is respectively connected to the microphone, the audio codec chip, the class AB power amplifier, and the speaker. The output end of the on-vehicle diagnostic system 7 is connected to the input end of the main controller 8. The main controller 8 is connected to the automotive audio host chip. The output end of the main controller 8 is connected to the input end of the on-vehicle display screen 9.

[0053] The fault handling method of an automotive audio fault handling system according to the present invention will be described in detail below.

[0054] The processing module 3 sends a first digital audio signal to the audio decoding module 4. The audio decoding module 4 converts the digital audio signal to obtain a first analog audio signal. The audio decoding module 4 respectively outputs the first analog audio signal to the processing module 3 and the power amplifier module 5.

[0055] The processing module 3 decodes the first digital audio signal to obtain an analog audio signal, and compares this analog signal with the first analog audio signal input by the audio decoding module 4 to determine whether the audio decoding module 4 has successfully decoded. When the processing module 3 determines that the audio decoding module 4 has failed to decode, the processing module 3 transmits the fault information of the audio decoding module 4's failure to decode to the main controller 8. After the processing module 3 determines that the audio decoding module 4 has failed to decode, it will perform a reset operation on the audio decoding module 4 and re-detect the audio decoding module 4. If it is determined that the audio decoding module 4 has successfully decoded, it will transmit the information of the audio decoding module 4's successful decoding to the main controller 8 to overwrite the original fault information. By performing a reset operation on the audio decoding module 4, the present invention can eliminate faults in the case of the audio decoding module 4 being stuck or dead, and prevent the on-vehicle diagnostic system 7 from misdiagnosing the audio decoding module 4.

[0056] When the processing module 3 determines that the audio decoding module 4 has successfully decoded, the power amplifier module 5 amplifies the input first analog audio signal to drive the audio output module 6 to emit sound. The audio receiving module 1 collects the sound emitted by the audio output module 6 to obtain a second analog audio signal. The preprocessing module 2 converts the second analog audio signal to obtain a second digital audio signal and inputs it to the processing module 3.

[0057] The processing module 3 compares the second digital audio signal with the first digital audio signal. If they are the same, it indicates that no fault has occurred. If they are different, the processing module 3 uses the on-vehicle diagnostic system 7 to detect the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6 respectively. The following will be described in detail with reference to embodiments.

[0058] When the on-vehicle diagnostic system 7 detects the audio receiving module 1, the corresponding automotive electronic control components detect the voltage and current values of the components in the audio receiving module 1 to determine whether overvoltage or overcurrent faults have occurred, and transmit the fault information to the main controller 8 via the CAN bus. When the on-vehicle diagnostic system 7 detects the preprocessing module 2, the corresponding automotive electronic control components detect the voltage, current, and clock signal during the operation of the preprocessing module 2 to determine whether a fault has occurred, and transmit the fault information to the main controller 8 via the CAN bus. When the on-vehicle diagnostic system 7 detects the power amplifier module 5, the corresponding automotive electronic control components detect the voltage, current, and temperature information of the power amplifier module 5 to determine whether a fault has occurred, and transmit the fault information to the main controller 8 via the CAN bus. When the on-vehicle diagnostic system 7 detects the audio output module 6, the corresponding automotive electronic control unit detects the voltage and current of the audio output module 6 to determine whether a fault has occurred, and transmit the fault information to the main controller 8 via the CAN bus. It should be noted that the on-vehicle diagnostic system 7 detects the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6 through different automotive electronic control units. That is to say, the on-vehicle diagnostic system 7 of the present invention includes four automotive electronic control units, and the four automotive electronic control units detect the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6 respectively. When the main controller 8 detects that a fault has occurred in the power amplifier module 5, it will perform a reset operation on the power amplifier module 5 through the processing module 3, and then use the on-vehicle diagnostic system 7 to detect the power amplifier module 5 again. By resetting the power amplifier module 5, the present invention can resume operation in the case of abnormal volume or jamming of the power amplifier module 5 and automatically eliminate the fault. After receiving the fault information, the main controller 8 will output the fault information to the on-vehicle display screen 9 for display to prompt the driver.

[0059] The following will analyze in detail the beneficial effects of an automotive audio fault processing system and its processing method according to the present invention.

[0060] In the present invention, the processing module 3 compares the analog audio signal output by the audio decoding module 4 with the analog signal decoded by itself, which can quickly determine whether the audio decoding module 4 decodes successfully. If they are inconsistent, the fault of the audio decoding module 4 can be accurately located. In the subsequent detection of the audio receiving module 1, the preprocessing module 2, the power amplifier module 5, and the audio output module 6, the key parameters of each module are detected respectively. Through independent detection by different automotive electronic control units, the specific location where the fault occurs can be further accurately determined, facilitating the maintenance personnel to quickly solve the problem.

[0061] When the audio decoding module 4 freezes or crashes, resulting in decoding failure, the processing module 3 performs a reset operation on it and retests, which can enable the audio decoding module 4 to resume normal operation, ensuring the normal decoding and subsequent playback of the audio signal. Similarly, when the main controller 8 detects a fault in the power amplifier module 5, such as abnormal volume or freezing, the processing module 3 resets the power amplifier module 5 and retests it, enabling it to resume normal operation, ensuring that the audio can be stably and continuously output, providing a good audio playback experience for users.

[0062] The entire vehicle diagnostic system 7 monitors the working status of each key module of the audio system in real time. Once an abnormality is detected, fault detection and processing are immediately carried out. Through operations such as resetting, attempts are made to automatically repair the fault, reducing the overall vehicle function abnormality caused by audio system faults, improving the reliability and stability of the automotive audio system, and reducing the system failure rate.

[0063] After receiving the fault information, the main controller 8 promptly outputs the fault information to the in-vehicle display screen 9 for display, prompting the driver that there is a fault in the audio system, enabling the driver to promptly understand the working status of the vehicle audio system, avoiding troubles caused by ignorance, and enhancing the overall user experience and safety of the vehicle.

[0064] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A car audio fault processing system, characterized in that: The system comprises an audio receiving module, a preprocessing module, a processing module, an audio decoding module, a power amplifier module, an audio output module, an on-board diagnostic system, a main controller and an on-board display screen, wherein the output end of the audio receiving module is connected to the input end of the preprocessing module, the output end of the preprocessing module is connected to the input end of the processing module, the processing module is connected to the audio decoding module, the output end of the processing module is connected to the input end of the power amplifier module, the output end of the audio decoding module is connected to the input end of the power amplifier module, the output end of the power amplifier module is connected to the input end of the audio output module, the output end of the processing module is connected to the input end of the on-board diagnostic system, the on-board diagnostic system is respectively connected to the audio receiving module, the preprocessing module, the power amplifier module and the audio output module, the output end of the on-board diagnostic system is connected to the input end of the main controller, the main controller is connected to the processing module, and the output end of the main controller is connected to the input end of the on-board display screen.

2. The automobile audio fault processing system according to claim 1, characterized in that: The processing module outputs a first digital audio signal to the audio decoding module, the audio decoding module outputs a first analog audio signal to the processing module and the power amplifier module respectively, the power amplifier module outputs the amplified first analog audio signal to the audio output module, the audio receiving module inputs a second analog audio signal to the preprocessing module, the preprocessing module outputs a second digital audio signal to the processing module, the processing module outputs a control instruction to the on-board diagnostic system, the on-board diagnostic system outputs diagnostic instructions to the audio receiving module, the preprocessing module, the power amplifier module and the audio output module respectively, the audio receiving module, the preprocessing module, the power amplifier module and the audio output module respectively output fault information to the on-board diagnostic system, the on-board diagnostic system outputs the fault information to the main controller, the main controller outputs the control instruction to the processing module, and the main controller outputs the fault information to the on-board display screen.

3. The automobile audio fault processing system according to claim 1, characterized in that: The audio receiving module adopts a microphone, and the output end of the microphone is connected to the input end of the preprocessing module.

4. The automobile audio fault processing system according to claim 1, characterized in that: The processing module adopts a car audio host chip, the output end of the preprocessing module is connected to the input end of the car audio host chip, the car audio host chip is connected to the audio decoding module, and the output end of the car audio host chip is connected to the input end of the power amplifier module.

5. The automobile audio fault processing system according to claim 1, characterized in that: The audio output module uses a speaker, and the output end of the power amplifier module is connected to the input end of the speaker.

6. A fault handling method of the automobile audio fault handling system according to any one of claims 1 to 5, characterized in that: Step 1: The processing module sends a first digital audio signal to the audio decoding module, the audio decoding module converts the digital audio signal to obtain a first analog audio signal, and the audio decoding module outputs the first analog audio signal to the processing module and the power amplifier module respectively; Step 2: The processing module detects the first analog audio signal and determines whether the audio decoding module decodes successfully. When the processing module determines that the audio decoding module fails to decode, the fault information is transmitted to the main controller; if it is determined that the audio decoding module decodes successfully, the next step is entered; Step 3: The power amplifier module amplifies the input first analog audio signal and drives the audio output module to emit sound; Step 4: The audio receiving module collects the sound emitted by the audio output module to obtain a second analog audio signal, the preprocessing module converts the second analog audio signal to obtain a second digital audio signal, and inputs the second digital audio signal to the processing module; Step 5: The processing module compares the second digital audio signal with the first digital audio signal. If they are consistent, it means that no fault has occurred; if they are inconsistent, the processing module detects the audio receiving module, preprocessing module, power amplifier module and audio output module respectively through the on-board diagnostic system, and outputs the fault information to the main controller, and the main controller outputs the fault information to the on-board display screen.

7. The fault handling method of the automobile audio fault handling system as claimed in claim 6, characterized in that: In step 2, the processing module compares the first analog audio signal with the analog signal obtained by decoding the first digital audio signal by the processing module to determine whether the audio decoding module has successfully decoded the first analog audio signal.

8. The fault handling method of the automobile audio fault handling system according to claim 6, characterized in that: In step 2, when the processing module determines that the audio decoding module fails in decoding, the processing module resets the audio decoding module and jumps to step 1.

9. The fault handling method of the automobile audio fault handling system according to claim 6, characterized in that: In step five, when the on-board diagnostic system detects that the power amplifier module fails, the processing module resets the power amplifier module and controls the on-board diagnostic system to detect the power amplifier module again.

Images