Automatic testing method and device for audio interface of computer mainboard

Abstract

The invention provides an automatic testing method and device for an audio interface of a computer mainboard, and relates to the technical field of computer hardware testing, and the method comprises the steps of initialization, built-in audio testing, post-audio testing, pre-audio testing, result recording and feedback, reset preparation and the like. The method comprises the following steps: firstly, starting an automatic testing device, ensuring correct connection, carrying out built-in audio testing, and checking an audio function of a Line-in port of a mainboard; and if the test is passed, carrying out a rear audio test, and checking audio functions of a rear loudspeaker and a microphone port of the mainboard. And then, carrying out a front audio test, and verifying the audio function of the front microphone port of the mainboard. A test result is recorded in the system, fault diagnosis information is provided, and the accuracy and reliability of the test are ensured. The invention has the advantages of complete mute test, no external interference, high cost performance and the like, is suitable for large-scale production test, and can effectively solve various problems in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of computer hardware testing, and particularly relates to an automatic testing method and device for the audio interface of a computer motherboard. Background Art

[0002] Currently, most computer motherboards (such as workstations, desktop computers, laptop computers, etc.) have audio functions, and the quality of their audio interfaces directly affects the user experience. Conventional testing methods usually use real test speakers, microphones, and Line-in, or conduct tests through imported audio loopback simulations. Among them, the audio loopback simulation test is only applicable to the testing of front and rear audio jack interfaces.

[0003] However, for the built-in mono speaker 2-pin interface in the motherboard, the industry usually uses the method of playing sound for manual listening and actual measurement for quality detection. Since the sound is played externally, it is extremely easy to be interfered by the outside world in the test environment, and manual testing is not foolproof, resulting in low accuracy of this method, difficulty in accurately judging the quality of the built-in speaker, easy mismeasurement and omission, and low reliability of the test results. Summary of the Invention

[0004] In view of this, the present invention proposes an automatic testing method and device for the audio interface of a computer motherboard, aiming to solve the problems of being interfered by external sounds, difficult testing, mismeasurement and omission existing in the prior art. By designing an "AUDIO test board" and importing a loopback test, it is possible to simultaneously test multiple motherboard audio interface functions, and develop a foolproof program for automatic judgment function, improve signal quality and testing accuracy, thereby reducing testing costs and improving customer satisfaction.

[0005] The present invention is implemented by the following technical solutions:

[0006] In a first aspect, the present invention provides an automatic testing method for the audio interface of a computer motherboard, and the automatic testing method includes the following steps:

[0007] Step 1: Initialization

[0008] 1. Start the automatic testing device to ensure that all connections are correct.

[0009] 2. Switch relay 1 to form a loopback connection between the speak-L of the AUDIO test board and the Line-in port of the motherboard under test, and prepare for the built-in audio test.

[0010] Step 2: Built-in audio test

[0011] 1. Send a test command to play a test audio signal through the AUDIO test board.

[0012] 2. Receive the audio signal returned from the Line-in port of the mainboard under test, and perform signal acquisition and analysis.

[0013] 3. Compare and analyze the returned audio signal with the original audio signal being played, and determine whether the built-in audio function is normal.

[0014] 4. If the built-in audio test passes, proceed to the rear audio test; if it fails, record the fault information and the test fails.

[0015] Step Three: Rear Audio Test

[0016] 1. Switch Relay 2 to form a loop connection for the rear audio speaker and microphone ports of the mainboard under test.

[0017] 2. Send a test command to play a test audio signal through the AUDIO test board.

[0018] 3. Receive the audio signal returned from the rear microphone port of the mainboard under test, and perform signal acquisition and analysis.

[0019] 4. Compare and analyze the returned audio signal with the original audio signal being played, and determine whether the rear audio function is normal.

[0020] 5. If the rear audio test passes, proceed to the front audio test; if it fails, record the fault information and the test fails.

[0021] Step Four: Front Audio Test

[0022] 1. Switch Relay 3 to form a loop connection for the FP-Audio speaker and microphone ports of the AUDIO test board.

[0023] 2. Send a test command to play a test audio signal through the AUDIO test board.

[0024] 3. Receive the audio signal returned from the front microphone port of the mainboard under test, and perform signal acquisition and analysis.

[0025] 4. Compare and analyze the returned audio signal with the original audio signal being played, and determine whether the front audio function is normal.

[0026] 5. If the front audio test passes, the test ends; if it fails, record the fault information and the test fails.

[0027] Step Five: Reset and Prepare for the Next Test

[0028] 1. Reset all relays and test equipment to ensure they return to their initial states.

[0029] 2. Prepare for the audio interface test of the next main board.

[0030] As a further solution of the present invention, the automatic test device includes a switching module. The switching module uses the GD32 M3 MCU core as a controller and is equipped with peripheral circuits. A test circuit for cooperating with the AUDIO test board for detection is also introduced into the automatic test device, which is used to connect the main board control signal for monitoring and supports built-in audio test, rear audio test, and front audio test.

[0031] As a further solution of the present invention, during initialization, the control unit of the automatic test device is initialized to prepare to send test instructions and control the relay module of the automatic test device.

[0032] As a further solution of the present invention, during the built-in audio test, the AUDIO test board uses the output signal of the internal speaker as the test audio signal for playback, converts it into an audio signal as the input, and feeds it back to the Line-in interface of the main board under test. The Line-in interface of the main board under test is the audio interface of the main board under test. The same specified sound source is played and recorded, and signal loopback is performed to complete the closed-loop test.

[0033] As a further solution of the present invention, when performing the built-in audio test, rear audio test, and front audio test, the test parameters are configured through the LabVIEW SSH communication protocol library, and the test audio signal is generated and sent to the audio input port of the main board under test through the AUDIO test board.

[0034] As a further solution of the present invention, the automatic test method for the audio interface of the computer main board further includes the following steps:

[0035] Record the test results in the test system, including the detailed information of pass and fail.

[0036] If any link of the test fails, provide fault diagnosis information for further analysis and repair.

[0037] Through the above steps, the present invention provides an efficient, accurate, and reliable automatic test method for the audio interface of a computer main board, which can effectively solve various problems in the prior art and has significant practical value and promotion prospects.

[0038] In the second aspect, the present invention also provides an automatic test device for the audio interface of a computer main board. The automatic test device includes:

[0039] A control unit: used to control the entire test process, including sending test instructions, switching relays, collecting, and analyzing audio signals;

[0040] Relay module: It contains multiple relays for switching different audio connection paths; the control unit realizes the automatic switching of the audio loop through the relay module.

[0041] AUDIO test board: It contains multiple audio interfaces for connecting the audio input / output ports of the main board under test; this AUDIO test board is responsible for generating test audio signals and receiving and processing the returned audio signals.

[0042] Signal acquisition and analysis module: It is connected to the AUDIO test board for acquiring the audio signals returned from the main board under test; by comparing the returned audio signals with the original test signals, it analyzes the functional status of the audio interfaces.

[0043] LabVIEW SSH communication protocol library: It is used to communicate with the main board under test, send audio test instructions and receive audio signals, realizing the automation and closed-loop control of the test process.

[0044] Result recording and feedback system: It is used to record the test results, including the detailed information of pass and fail; it provides fault diagnosis information for further analysis and repair.

[0045] Reset module: It is used to reset all relays and test equipment to ensure they return to the initial state; it prepares for the next test.

[0046] As a further solution of the present invention, the automatic test device for the audio interface of the computer main board includes a switching module. The switching module uses the GD32 M3 MCU core as the controller and is equipped with a peripheral circuit. A test circuit for cooperating with the AUDIO test board to detect is also introduced in the automatic test device, which is used to connect the main board control signal for monitoring and supports built-in audio test, rear audio test and front audio test.

[0047] As a further solution of the present invention, the control unit can communicate with the main board under test through the LabVIEW SSH communication protocol library, send audio test instructions and collect the returned audio signals.

[0048] As a further solution of the present invention, the signal acquisition and analysis module can collect and analyze audio signals in real time and automatically judge the functional status of the audio interfaces through the software system.

[0049] The automatic test device for the audio interface of the computer main board of the present invention can adopt analog signals for in-loop sound playback and recording during the test process, without generating external noise and being not interfered by external sounds.

[0050] Compared with the prior art, the automatic test method and device for the audio interface of the computer main board provided by the present invention have the following beneficial effects:

[0051] 1. Achieved efficient automated testing: Through the control unit and automated relay switching, the present invention realizes the full automation of the testing process, greatly reducing manual intervention and improving testing efficiency and consistency.

[0052] 2. Improved the accuracy and reliability of test results: The present invention adopts a signal acquisition and analysis module, which can accurately acquire and compare audio signals, and automatically judges the functional status of the audio interface through software, ensuring the accuracy and reliability of test results.

[0053] 3. Realized real-time feedback on test results and fault diagnosis: Through the result recording and feedback system, the present invention can record test results in real time and provide detailed fault diagnosis information, which helps to quickly locate and solve problems and improves testing and maintenance efficiency.

[0054] 4. Achieved closed-loop control: The present invention realizes communication with the main board under test through the LabVIEW SSH communication protocol library, forming a closed-loop control system to ensure the accurate transmission of test instructions and return signals, and improving the automation level and stability of the testing process.

[0055] 5. No noise interference and high cost performance: During the testing process, the present invention adopts analog signals for in-loop simultaneous playback and recording of sounds, without generating external noise and being unaffected by external sounds, ensuring a quiet testing environment and pure test results. The device and method are simply designed, with a simple structure, easy to implement, low cost, suitable for large-scale production testing, and having high cost performance.

[0056] In summary, the automatic testing method and device for the audio interface of a computer main board provided by the present invention not only improve the testing efficiency and accuracy, but also have the advantages of high cost performance, simple operation, wide application range, etc. It is suitable for popularization and application in large-scale production testing and can bring significant economic benefits and technological progress to production enterprises.

[0057] These aspects or other aspects of the present invention will be more clearly understood in the following description of the embodiments. It should be understood that the above general description and the following detailed description are only exemplary and explanatory and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for describing the exemplary embodiments or related technologies. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0059] Figure 1Flow chart of the automatic test method for the audio interface of the computer motherboard in the embodiments of the present invention;

[0060] Figure 2 Schematic wiring diagram of the AUDIO test board and the motherboard under test in the automatic test method and device for the audio interface of the computer motherboard in the embodiments of the present invention. Detailed implementation manners

[0061] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0062] In some processes described in the specification, claims and above-mentioned drawings of the present invention, a plurality of operations appear in a specific order. However, it should be clearly understood that these operations may not be executed in the order in which they appear herein or may be executed in parallel. The serial numbers of the operations, such as 101, 102, etc., are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations may be executed in sequence or in parallel. It should be noted that the descriptions such as "first" and "second" in this article are used to distinguish different messages, devices, modules, etc., do not represent the sequence, and do not limit that "first" and "second" are of different types.

[0063] The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present invention. Obviously, the described exemplary embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0064] Since server computer motherboards and small cards are becoming more and more complex, there are many redundant special power interfaces reserved on the board. For simple testing, a common multimeter is used to manually measure the voltage one by one, and the testing time is relatively long. The key problem is that there is no anti-fooling function; while using a digital multimeter and switching with a relay, additional fixture hardware needs to be made, and the cost is relatively high. Aiming at the problems of high cost in the existing conventional testing by using a digital multimeter + relay switching; the multimeter is in a single-channel mode, only one channel is collected each time, and it works serially, with slow speed; and the existing testing equipment is large in size, additional fixtures need to be made, otherwise there is no anti-fooling function. The present invention proposes an automatic test method and device for the audio interface of a computer motherboard. By self-developing and introducing a voltage acquisition card circuit board and developing test scripts, it is possible to quickly test all voltages with one key, significantly improving the testing efficiency and stability.

[0065] The present invention realizes automatic testing, one-key quick testing. By importing the circuit board, the previous one-by-one point finding test is changed to the subsequent automatic batch testing, improving stability and reliability; changing from the serial testing method to the parallel method, sharply increasing the testing speed, without the need to manufacture complex fixtures, reducing costs; the combination of the designed circuit board hardware and the anti-fooling program expands the testing coverage rate, with better quality and improved customer satisfaction.

[0066] The technical solution of the present invention will be further described below in conjunction with specific embodiments:

[0067] Refer to Figure 1 and Figure 2 As shown, the embodiment of the present invention provides an automatic testing method for the audio interface of a computer motherboard. The automatic testing method includes the following steps:

[0068] Step 1. Initialization:

[0069] 1. Start the automatic testing device to ensure that all connections are correct.

[0070] 2. Switch relay 1 to form a loop connection between the speak-L of the AUDIO test board and the Line-in port of the motherboard under test, preparing for the built-in audio test.

[0071] Step 2. Built-in audio test:

[0072] 1. Send a test instruction to play a test audio signal through the AUDIO test board.

[0073] 2. Receive the audio signal returned from the Line-in port of the motherboard under test and perform signal acquisition and analysis.

[0074] 3. Compare and analyze the returned audio signal with the original audio signal played to determine whether the built-in audio function is normal.

[0075] 4. If the built-in audio test passes, enter the post-audio test; if not, record the fault information and the test fails.

[0076] Step 3. Post-audio test:

[0077] 1. Switch relay 2 to form a loop connection between the rear audio speaker and the microphone port of the motherboard under test.

[0078] 2. Send a test instruction to play a test audio signal through the AUDIO test board.

[0079] 3. Receive the audio signal returned from the rear microphone port of the motherboard under test and perform signal acquisition and analysis.

[0080] 4. Compare and analyze the returned audio signal with the original played audio signal to determine whether the rear audio function is normal.

[0081] 5. If the rear audio test passes, proceed to the front audio test; if it fails, record the fault information and the test fails.

[0082] Step Four: Front Audio Test:

[0083] 1. Switch Relay 3 to form a loop connection between the FP-Audio speaker and microphone ports of the AUDIO test board.

[0084] 2. Send a test command to play a test audio signal through the AUDIO test board.

[0085] 3. Receive the audio signal returned from the front microphone port of the main board under test and perform signal acquisition and analysis.

[0086] 4. Compare and analyze the returned audio signal with the original played audio signal to determine whether the front audio function is normal.

[0087] 5. If the front audio test passes, the test ends; if it fails, record the fault information and the test fails.

[0088] Step Five: Result Recording and Feedback:

[0089] 1. Record the test results in the test system, including detailed information on passes and failures.

[0090] 2. If any part of the test fails, provide fault diagnosis information for further analysis and repair.

[0091] Step Six: Reset and Prepare for the Next Test:

[0092] 1. Reset all relays and test equipment to ensure they return to their initial states.

[0093] 2. Prepare to perform the audio interface test on the next main board.

[0094] In this embodiment, the automatic test device includes a switching module. The switching module uses a GD32 M3 MCU core as the controller and is equipped with a peripheral circuit. A test circuit for cooperating with the AUDIO test board for detection is also introduced in the automatic test device, which is used to connect the main board control signal for monitoring and supports built-in audio test, rear audio test, and front audio test.

[0095] Among them, during initialization, the control unit of the automatic test device is initialized to prepare to send test commands and control the relay module of the automatic test device.

[0096] In this embodiment, during the built-in audio test, the AUDIO test board uses the output signal of the internal speaker as the test audio signal for playback, converts it into an audio signal as the input, and feeds it back to the Line-in interface of the main board under test. The Line-in interface of the main board under test is the audio interface of the main board under test. It plays and records the specified sound source simultaneously, performs signal loopback, and completes the closed-loop test.

[0097] During the execution of the built-in audio test, rear audio test, and front audio test, the test parameters are configured through the LabVIEW SSH communication protocol library, and the AUDIO test board generates and sends the test audio signal to the audio input port of the main board under test.

[0098] Through the above steps, the present invention provides an efficient, accurate, and reliable automatic test method for the audio interface of a computer main board, which can effectively solve various problems in the prior art and has significant practical value and promotion prospects.

[0099] In the embodiment of the present invention, signal acquisition and analysis communicate with the product main board through the LabVIEW SSH communication protocol library, send Audio-related test instructions, acquire the played audio signal, and perform comparative analysis with the acquired audio signal to achieve closed-loop detection. Among them, automatic judgment and feedback are automatically completed by the software system, and real-time feedback is provided to improve the anti-fooling and reliability of the test. During the test process, an analog signal is used for in-loop simultaneous playback and recording of sound, no external noise is generated, and it is not affected by external sounds. The automatic test method for the audio interface of this computer main board has high cost performance, has no special requirements for the test environment, the test method is simple and easy to implement, and is suitable for large-scale production testing.

[0100] For the automatic test method of the audio interface of the computer main board of the present invention, during signal acquisition and analysis, the LabVIEW SSH communication protocol library is used to communicate with the product main board, and Audio-related test instructions are sent for testing. The played audio signal is acquired through software, and comparative analysis is performed with the acquired audio signal to achieve closed-loop detection. During automatic judgment and feedback, the software system automatically judges the test result and provides real-time feedback to improve the anti-fooling and reliability of the test.

[0101] The automatic test method of the audio interface of the computer main board of the present invention can achieve completely silent testing. An analog signal is used, and there is an in-loop simultaneous playback and recording of sound, without generating external noise. Moreover, it is not affected by external sounds, improving the accuracy and reliability of the test; reducing the test cost, having no special requirements for the test environment, the test method is simple and easy to implement, and is suitable for large-scale production testing.

[0102] An automatic test device for the audio interface of a computer motherboard provided in an embodiment of the present invention includes a control unit, a relay module, an AUDIO test board, a signal acquisition and analysis module, a LabVIEW SSH communication protocol library, a result recording and feedback system, and a reset module.

[0103] Among them, the control unit is used to control the entire test process, including sending test instructions, switching relays, and collecting and analyzing audio signals; the relay module includes multiple relays and is used to switch different audio connection paths; the control unit realizes the automatic switching of the audio loop through the relay module. The AUDIO test board includes multiple audio interfaces and is used to connect the audio input / output ports of the motherboard under test; this AUDIO test board is responsible for generating test audio signals and receiving and processing the returned audio signals. The signal acquisition and analysis module is connected to the AUDIO test board and is used to collect the audio signals returned from the motherboard under test; by comparing the returned audio signals with the original test signals, the functional status of the audio interface is analyzed. The LabVIEW SSH communication protocol library is used to communicate with the motherboard under test, send audio test instructions, and receive audio signals, realizing the automation and closed-loop control of the test process. The result recording and feedback system is used to record the test results, including the detailed information of pass and fail; provide fault diagnosis information for further analysis and repair. The reset module: is used to reset all relays and test equipment to ensure that they return to the initial state; prepare for the next test.

[0104] In this embodiment, the automatic test device for the audio interface of the computer motherboard includes a switching module. The switching module uses a GD32 M3 MCU core as the controller and is equipped with peripheral circuits. A test circuit for cooperating with the AUDIO test board to detect is also introduced in the automatic test device and is used to connect the motherboard control signal for monitoring, supporting built-in audio test, rear audio test, and front audio test.

[0105] Among them, the control unit can communicate with the motherboard under test through the LabVIEW SSH communication protocol library, send audio test instructions, and collect the returned audio signals. The signal acquisition and analysis module can collect and analyze audio signals in real time and automatically judge the functional status of the audio interface through the software system.

[0106] The automatic test device for the audio interface of the computer motherboard of the present invention can adopt an analog signal for in-loop simultaneous playback and recording of sound during the test process, without generating external noise and being not affected by external sounds. It not only improves the test efficiency and accuracy, but also has the advantages of high cost performance, simple operation, wide application range, etc. It is suitable for popularization and application in large-scale production tests and can bring significant economic benefits and technological progress to production enterprises.

[0107] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic testing method for a computer motherboard audio interface, characterized in that: The automatic testing method comprises the following steps: Step 1: Initialization: Start the automatic test device, switch relay 1, so that the speak-L of the AUD IO test board forms a loopback connection with the Line-in port of the motherboard under test, and prepare for the built-in audio test; Step 2: Built-in audio test: Send test instructions, play test audio signals through the AUD IO test board, receive audio signals returned from the Line-in port of the tested motherboard, and perform signal acquisition and analysis; compare and analyze the returned audio signals with the original audio signals played to determine whether the built-in audio function is normal; if the built-in audio test passes, enter the post-audio test; if it fails, record the fault information and the test fails; Step 3: Rear audio test: Switch relay 2 to form a loop connection between the rear audio speaker and microphone port of the tested mainboard; send a test command to play the test audio signal through the AUD IO test board; receive the audio signal returned from the rear microphone port of the tested mainboard, and perform signal acquisition and analysis; compare and analyze the returned audio signal with the original audio signal played to determine whether the rear audio function is normal; if the rear audio test passes, enter the front audio test; if it fails, record the fault information and the test fails; Step 4: Front audio test: Switch relay 3 to form a loop connection between the FP-Audio speaker and microphone port of the AUDIO test board; send a test command to play the test audio signal through the AUD IO test board; receive the audio signal returned from the front microphone port of the tested motherboard, and perform signal acquisition and analysis; compare and analyze the returned audio signal with the original audio signal played to determine whether the front audio function is normal; if the front audio test passes, the test ends; if not, the fault information is recorded and the test fails; Step 5: Reset and prepare for the next test: Reset all relays and test equipment to their initial state, ready for the next motherboard audio interface test.

2. The automatic testing method for the audio interface of a computer motherboard as claimed in claim 1, characterized in that: The automatic test device includes a switching module, which uses the GD32 M3 MCU core as a controller and is equipped with peripheral circuits. The automatic test device also imports a test circuit that cooperates with the AUD IO test board detection, which is used to connect the mainboard control signal for monitoring, and supports built-in audio testing, rear audio testing and front audio testing.

3. The automatic testing method of the computer motherboard audio interface as claimed in claim 2, characterized in that: During initialization, the control unit of the automatic test device is initialized to prepare to send a test instruction and control the relay module of the automatic test device.

4. The automatic testing method of the computer motherboard audio interface as claimed in claim 3, characterized in that: During the built-in audio test, the AUD IO test board uses the output signal of the internal speaker as the test audio signal to be played, converts it into an audio signal as input and feeds it back to the Line-in interface of the motherboard under test. The Line-in interface of the motherboard under test is the audio interface of the motherboard under test. It simultaneously broadcasts and records the specified audio source, performs signal loopback, and completes the closed-loop test.

5. The automatic testing method of the computer motherboard audio interface as claimed in claim 4, characterized in that: When performing built-in audio tests, rear audio tests, and front audio tests, test parameters are configured through the LabVIEW SSH communication protocol library, and the AUD IO test board generates and sends test audio signals to the audio input port of the motherboard under test.

6. The automatic testing method of the computer motherboard audio interface as claimed in claim 5, characterized in that: The following steps are also included: Record test results in the test system, including pass and fail details; Provide fault diagnosis information for test failure links.

7. An automatic testing device for the audio interface of a computer motherboard, characterized in that: The automatic testing device is used to execute the automatic testing method of the audio interface of the computer motherboard according to any one of claims 1 to 6, and the automatic testing device comprises: Control unit: used to control the entire test process, including sending test instructions, switching relays, collecting and analyzing audio signals; Relay module: contains multiple relays for switching different audio connection paths; the control unit automatically switches the audio circuit through the relay module; AUDIO test board: contains multiple audio interfaces for connecting the audio input / output ports of the motherboard under test; the AUDIO test board is also used to generate test audio signals and receive and process the returned audio signals; Signal acquisition and analysis module: connected to the AUDIO test board, used to collect the audio signal returned from the tested mainboard; by comparing the returned audio signal with the original test signal, analyze the functional status of the audio interface; LabVIEW SSH communication protocol library: used to communicate with the motherboard under test, send audio test instructions and receive audio signals, and realize automation and closed-loop control of the test process.

8. The automatic testing device for the audio interface of a computer motherboard as claimed in claim 7, characterized in that: The test setup also includes: Reset module: used to reset all relays and test equipment back to the initial state; ready for the next test.

9. The automatic testing device for the audio interface of a computer motherboard as claimed in claim 8, characterized in that: The automatic test device for the audio interface of the computer motherboard includes a switching module, which uses the GD32 M3 MCU core as a controller and is equipped with peripheral circuits. The automatic test device also imports a test circuit that cooperates with the AUDIO test board detection, which is used to connect the motherboard control signal for monitoring, and supports built-in audio testing, rear audio testing and front audio testing.

10. The automatic testing device for the audio interface of a computer motherboard as claimed in claim 9, characterized in that: The control unit can communicate with the mainboard under test through the LabVIEW SSH communication protocol library, send audio test instructions and collect returned audio signals.

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