Audio wiring test system and device

Abstract

The invention relates to the technical field of audio wiring testing, in particular to an audio wiring testing system and device, and the system comprises a testing access unit, a signal processing and analysis unit, a control and interaction unit, and a data storage unit. The test access unit is used as a conductive path to be inserted into a gap between the security unit and the terminal row of the sound distribution unit of the test telephone, when the test access unit is inserted in place, the conductive path temporarily bypasses an overvoltage protection assembly in the security unit, and meanwhile, a low-resistance and safe electrical test path is established between a test system and a target line; the signal processing and analysis unit comprises a parameter acquisition module and an overvoltage protection assembly detection module; on the premise of not influencing the conversation of a user, the comprehensive deep test from basic electrical parameters to call signaling does not need to pull out a security unit, fault points can be segmented, the test time is shortened, the dependence on the experience of operation and maintenance personnel is greatly reduced, the accuracy and efficiency of the test are improved, and meanwhile, the method is convenient to adapt to different working scenes.

Description

Technical Field

[0001] This invention relates to the technical field of audio wiring testing, and in particular to an audio wiring testing system and apparatus. Background Technology

[0002] As the intermediary connecting the switch and the user's telephone, the audio wiring unit is also a key node in daily operation and maintenance. Once a user's telephone malfunctions, it will first affect the user's experience. With the increasing demand for office telephones, the amount of telephone repairs is also increasing. For telephone repair personnel, without specialized testing equipment, it is difficult to determine the location of the fault, and it is also difficult to know whether the telephone channel has been restored to normal after repair. This directly affects the user's experience.

[0003] Currently, alligator clips are mainly used to connect test phones to the audio distribution unit for testing. Furthermore, the protection cable must be disconnected before testing, and segmented testing is performed. The drawbacks of this testing method are as follows: 1. Alligator clips are difficult to secure to the audio unit and require repeated clipping and placement. 2. Unplugging and replugging the cable may cause it to loosen, increasing the potential points of failure; 3. The plug-in / plug-out protection arrangement will add extra testing time; Because the existing testing tools are not very reliable and the testing process requires removing the safety unit and re-tightening the cable, the testing time is long. Therefore, a system and device to shorten the testing time of the audio unit is developed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an audio wiring test system and device that enables comprehensive and in-depth testing from basic electrical parameters to call signaling without affecting user calls. This system does not require disconnecting the security unit, can isolate fault points, shorten test time, significantly reduce reliance on maintenance personnel experience, improve test accuracy and efficiency, and is adaptable to different work scenarios.

[0005] The present invention provides an audio wiring test system and apparatus, comprising a test access unit, a signal processing and analysis unit, a control and interaction unit, and a data storage unit; Test access unit: Inserted as a conductive path into the gap between the protection unit and the audio distribution unit terminal block of the test telephone. When inserted into place, this conductive path temporarily bypasses the overvoltage protection component in the protection unit, and at the same time establishes a low-resistance, safe electrical test path between the test system and the target line. The signal processing and analysis unit includes a parameter acquisition module and an overvoltage protection component detection module; Signal processing and analysis unit: Electrically connected to the test access unit, it processes and analyzes signals from the test path. At the same time, it uses the parameter acquisition module to synchronously acquire voltage, current, and phase difference of each channel, calculates contact resistance, insulation resistance, and crosstalk data, and injects test signals in reverse through the overvoltage protection component detection module to detect the response time of the overvoltage protection component. Data storage unit: Stores raw test data and analysis results, and supports historical data tracing; Control and Interaction Unit: Includes a microcontroller (MCU), communication interface, and alarm module, connected to the signal processing and analysis unit. It controls the entire testing process and provides a human-machine interface, supporting test parameter configuration, result display, and report generation. The alarm module uses audible and visual prompts to mark non-conforming items and displays fault types and locations such as open circuit, short circuit, poor contact, insulation failure, and overvoltage protection failure on the screen. Through physical access combined with intelligent functional units, it enables comprehensive and in-depth testing from basic electrical parameters to call signaling without affecting user calls. It eliminates the need to disconnect the safety unit, isolates fault points, and shortens testing time. By integrating dialing testing, automatic signal tone recognition, and electrical parameter measurement, it automates the testing process, significantly reducing reliance on maintenance personnel experience, improving testing accuracy and efficiency, and adapting to different work scenarios.

[0006] Preferably, the signal processing and analysis unit further includes a signal coupling and isolation module, an audio processing and decoding module, and an electrical parameter measurement module; Signal coupling and isolation module: It adopts an inductive coupler to safely inject test signals into the circuit and couple the audio signaling signal returned from the circuit to the analysis circuit with high fidelity, so as to achieve electrical isolation between the internal circuit of the test system and the external circuit. Audio processing and decoding module: It uses an analog-to-digital converter (ADC) and a digital signal processor (DSP) to capture, filter and decode audio signals on the line. It has dual-tone multi-frequency (DTMF) signal decoding function, which can identify the number dialed by the user. At the same time, it has a built-in feature library and pattern matching algorithm for standard dial tone, busy tone, ringback tone and congestion tone signal tone, which can automatically analyze and determine the type and status of the signal tone returned from the switch side. Electrical parameter measurement module: Used to measure the DC voltage, loop current, insulation resistance, and capacitance of the line, providing quantitative basis for judging line open circuit, short circuit, grounding, and insulation deterioration faults.

[0007] Preferably, the control and interaction unit further includes a test logic controller and a result display and recording module; Test logic controller: It is used to automatically schedule the corresponding modules in the signal processing and analysis unit to work according to the test mode selected by the user, such as monitoring the signal tone on the switch side, simulating the user's off-hook dialing, and testing the external line parameters, and execute the test steps in a preset logical order; The results display and recording module is used to present the numbers, signal tone types, and parameter measurement results identified by the signal processing and analysis unit to maintenance personnel in a visual manner. It can also store test results, time, and line identification information locally or upload them. After power-on, the system initializes, and the user selects a test mode, such as automatic diagnosis, via the touchscreen. The controller first calls the electrical parameter measurement module to acquire and display the line voltage and resistance. Then, the controller automatically enters the signal tone detection sub-process, controlling the DSP to continuously acquire and analyze the line audio and display the recognition results on the screen. Subsequently, the interface prompts the user whether to perform a dialing test. If the user confirms, the test logic controller sends a simulated off-hook signal through the signal processing and analysis unit. After detecting the dial tone, the user is prompted to enter the test number, and then the corresponding DTMF sequence is sent. The system automatically listens for and identifies the returned ringback tone, busy tone, or voice prompt. The results of all steps are recorded, and a test report can be generated. After the test is completed, the test access unit is disconnected, and the line protection function is instantly restored without any residual impact on the entire communication system.

[0008] Preferably, it also includes a line status active monitoring unit and a spectrum analyzer module; Active line status monitoring unit: It uses accelerometers and temperature sensors to monitor line vibration and temperature changes in real time, and combines electrical parameters to comprehensively judge the stability of physical connections and provide early warning of poor contact caused by vibration; Spectrum analyzer module: Scans the line for radiated interference in the 150kHz-30MHz frequency band, detects whether it complies with communication standards, and avoids voice distortion or data packet loss caused by electromagnetic compatibility issues.

[0009] Preferably, it also includes a digital twin and health record module for the line and a predictive maintenance analysis engine; Line Digital Twin and Health Record Module: Creates a digital twin record for each tested line. The parameters, waveforms, and diagnostic conclusions in each test result are stored as a time slice in the data storage unit of the record, and then the trend curves of key parameters changing over time are visualized. Predictive maintenance analytics engine: Uses trend curves and machine learning algorithms to identify the slow degradation process of parameters.

[0010] Preferably, the control and interaction unit further includes a real-time screen sharing and audio / video communication module and a cloud synchronization module for the test process and knowledge base; Real-time screen sharing and audio / video communication module: Utilizing wireless communication, the test interface, real-time waveforms, and camera images are encoded with low latency and pushed to the cloud or expert seats. Backend experts can view them in real time via PC or mobile devices and provide remote guidance through voice or screen annotations. The cloud-synchronized testing process and knowledge base module allows users to upload their custom, high-efficiency test scripts to the cloud for sharing. Novice operators can download best practice test solutions created by experienced engineers from the cloud to quickly improve their skills and ensure consistent testing standards.

[0011] Preferably, the test access unit includes a power cord, a connector, an operating handle, a housing, an insulating sheet, conductive copper paint, and anti-slip protrusions; The connector is located at the rear end of the power cord; The operating handle is installed at the front end of the power cord; The housing is mounted on the outer wall of the operating handle. An opening is provided at the front end of the housing, and a conductive socket is provided inside the opening. The conductive socket is connected to the front end of the power cord. Conductive copper paint is applied to the outer wall of the insulating sheet; The rear end of the insulating plate is inserted into the conductive socket, and the conductive copper paint is connected to the conductive socket; Anti-slip protrusions are set on the outer wall of the operating handle; during testing, the connector is connected to the signal processing and analysis unit, and then the operator holds the operating handle to move the isolating plate into the gap between the telephone's security unit and the audio distribution unit terminal block. At this time, the telephone and the signal processing and analysis unit are connected through conductive copper paint. By using the isolating plate to isolate the upper and lower ends of the audio distribution unit, the connection between the switch side and the user side can be effectively isolated without removing the security unit. The alligator clip is installed on the lower end of the audio distribution unit and the test is dialed. During use, it should have good contact with the audio distribution unit, without removing the security unit, and can isolate the fault point, which can shorten the test time.

[0012] Preferably, it also includes an internal threaded fitting, a screw, a clamping block, and a stepped structure; Two sets of internal threaded fittings are respectively installed on both sides of the housing; The two sets of screws are respectively fitted onto the two sets of internal threaded fittings; Two sets of clamping blocks are slidably installed on both sides inside the housing, and the two sets of clamping blocks are rotatably connected to the ends of two sets of screws respectively; The stepped structure is arranged oppositely on two sets of clamping blocks. When the rear end of the isolation plate is inserted into the conductive socket in the housing, the two sets of screws are rotated and moved to move the two sets of clamping blocks closer to each other, thereby clamping and fixing the isolation plate. This improves the installation firmness of the isolation plate and the convenience of disassembly and replacement. By setting the stepped structure, it is easy to fix and limit the isolation plates of different thicknesses, reducing the limitations of use.

[0013] Preferably, it also includes an elastic compression plate; Two sets of elastic pressure plates are respectively set on the upper and lower sides inside the opening of the housing; when the isolation plate is inserted into the housing, the elastic pressure plates on the upper and lower sides elastically clamp the isolation plate, improving the convenience of fixing the isolation plate.

[0014] Preferably, the isolation plate is made of PU polyurethane material; it has a certain toughness and strength, is easy to insert into the gaps of security and audio distribution, and is not likely to damage the cables and security unit springs.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: by combining physical access methods with intelligent functional units, it can achieve comprehensive and in-depth testing from basic electrical parameters to call signaling without affecting user calls. It does not require disconnecting the security unit and can isolate fault points, thus shortening the testing time. By integrating dialing testing, automatic signal tone recognition, and electrical parameter measurement, it automates the testing process, significantly reduces reliance on the experience of maintenance personnel, improves the accuracy and efficiency of testing, and is easy to adapt to different working scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure 2 This is a schematic diagram of the connection between the test access unit and the signal processing and analysis unit, etc. Figure 3 This is a partial structural diagram of the control and interaction unit; Figure 4 This is an isometric structural diagram of the connection between the power cord and connectors, etc. Figure 5 This is a partial isometric structural diagram of the connection between the insulating sheet and the conductive copper paint, etc. Figure 6 This is a partial isometric structural diagram of the connection between the housing and the operating handle, etc. Figure 7 This is a partial isometric schematic diagram of the clamping block and stepped structure, etc. Figure 8 This is an isometric structural diagram showing the connection between the operating handle and the housing, etc. Figure 9 This is an isometric structural diagram of the connection between the housing and the internal threaded assembly, etc. Figure 10 This is an isometric structural diagram showing the connection between the power cord and the anti-slip protrusions, etc.

[0017] The following labels are used in the attached diagram: 101, power cord; 102, connector; 103, operating handle; 104, housing; 105, insulating plate; 106, conductive copper paint; 107, anti-slip protrusion; 201, internal threaded fitting; 202, screw; 203, clamping block; 204, stepped structure; 301, elastic pressure plate. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0019] Example 1 like Figures 1 to 3 As shown, an audio wiring test system and apparatus of the present invention includes a test access unit, a signal processing and analysis unit, a control and interaction unit, and a data storage unit. Test access unit: Inserted as a conductive path into the gap between the protection unit and the audio distribution unit terminal block of the test telephone. When inserted into place, this conductive path temporarily bypasses the overvoltage protection component in the protection unit, and at the same time establishes a low-resistance, safe electrical test path between the test system and the target line. The signal processing and analysis unit includes a parameter acquisition module and an overvoltage protection component detection module; Signal processing and analysis unit: Electrically connected to the test access unit, it processes and analyzes signals from the test path. At the same time, it uses the parameter acquisition module to synchronously acquire voltage, current, and phase difference of each channel, calculates contact resistance, insulation resistance, and crosstalk data, and injects test signals in reverse through the overvoltage protection component detection module to detect the response time of the overvoltage protection component. Data storage unit: Stores raw test data and analysis results, and supports historical data tracing; Control and Interaction Unit: Includes a microcontroller (MCU), communication interface, and alarm module. It is connected to the signal processing and analysis unit to control the entire testing process and provide a human-machine interface. It supports test parameter configuration, result display, and report generation. The alarm module marks non-conforming items with audible and visual prompts and displays the fault types and locations of open circuit, short circuit, poor contact, insulation failure, and overvoltage protection failure on the screen. The signal processing and analysis unit also includes a signal coupling and isolation module, an audio processing and decoding module, and an electrical parameter measurement module; Signal coupling and isolation module: It adopts an inductive coupler to safely inject test signals into the circuit and couple the audio signaling signal returned from the circuit to the analysis circuit with high fidelity, so as to achieve electrical isolation between the internal circuit of the test system and the external circuit. Audio processing and decoding module: It adopts analog-to-digital converter (ADC) and digital signal processor (DSP) to capture, filter and decode audio signals on the line. It has dual-tone multi-frequency (DTMF) signal decoding function, which can identify the number dialed by the user. At the same time, it has built-in feature library and pattern matching algorithm of standard dial tone, busy tone, ringback tone and congestion tone signal tone, which can automatically analyze and determine the type and status of the signal tone returned from the switch side. Electrical parameter measurement module: used to measure the DC voltage, loop current, insulation resistance, and capacitance of the line, providing quantitative basis for judging line open circuit, short circuit, grounding, and insulation deterioration faults; The control and interaction unit also includes a test logic controller and a result display and recording module; Test logic controller: It is used to automatically schedule the corresponding modules in the signal processing and analysis unit to work according to the test mode selected by the user, such as monitoring the signal tone on the switch side, simulating the user's off-hook dialing, and testing the external line parameters, and execute the test steps in a preset logical order; The results display and recording module is used to present the numbers, signal tone types, and parameter measurement results identified by the output of the signal processing and analysis unit to the operation and maintenance personnel in a visual manner. It can also store test results, time, and line identification information locally or upload them. It also includes an active line status monitoring unit and a spectrum analyzer module; Active line status monitoring unit: It uses accelerometers and temperature sensors to monitor line vibration and temperature changes in real time, and combines electrical parameters to comprehensively judge the stability of physical connections and provide early warning of poor contact caused by vibration; Spectrum analyzer module: scans the line for radiated interference in the 150kHz-30MHz frequency band, detects whether it complies with communication standards, and avoids voice distortion or data packet loss caused by electromagnetic compatibility issues; It also includes a digital twin and health record module for the lines and a predictive maintenance analytics engine; Line Digital Twin and Health Record Module: Creates a digital twin record for each tested line. The parameters, waveforms, and diagnostic conclusions in each test result are stored as a time slice in the data storage unit of the record, and then the trend curves of key parameters changing over time are visualized. Predictive maintenance analytics engine: uses trend curves and machine learning algorithms to identify the slow degradation process of parameters; The control and interaction unit also includes a real-time screen sharing and audio / video communication module and a cloud synchronization module for the test process and knowledge base. Real-time screen sharing and audio / video communication module: Utilizing wireless communication, the test interface, real-time waveforms, and camera images are encoded with low latency and pushed to the cloud or expert seats. Backend experts can view them in real time via PC or mobile devices and provide remote guidance through voice or screen annotations. Test process and knowledge base cloud synchronization module: Users upload their custom, high-efficiency test scripts to the cloud for sharing, and novice operators can download best practice test solutions created by experienced engineers from the cloud to quickly improve their skills and ensure consistent test standards; In this embodiment, by combining physical access with intelligent functional units, comprehensive and in-depth testing from basic electrical parameters to call signaling can be achieved without affecting user calls. This does not require disconnecting the security unit, can isolate fault points, and can shorten testing time. By integrating dialing testing, automatic signal tone recognition, and electrical parameter measurement, the testing process is automated, significantly reducing reliance on the experience of maintenance personnel, improving the accuracy and efficiency of testing, and making it easy to adapt to different work scenarios.

[0020] Example 2 Based on Embodiment 1, the present invention provides an audio wiring test system and apparatus, such as... Figures 4 to 10 As shown, the test access unit includes a power cord 101, a connector 102, an operating handle 103, a housing 104, an insulating plate 105, conductive copper paint 106, and anti-slip protrusions 107. Connector 102 is located at the rear end of power cord 101; The operating handle 103 is mounted on the front end of the power cord 101; The housing 104 is installed on the outer wall of the operating handle 103. The front end of the housing 104 is provided with an opening, and a conductive socket is provided inside the opening. The conductive socket is connected to the front end of the power cord 101. Conductive copper paint 106 is applied to the outer wall of the insulating sheet 105; The rear end of the isolation plate 105 is inserted into the conductive socket, and the conductive copper paint 106 is connected to the conductive socket; Anti-slip protrusions 107 are provided on the outer wall of the operating handle 103; It also includes an internal threaded assembly 201, a screw 202, a clamping block 203, and a stepped structure 204; Two sets of internal threaded fittings 201 are respectively disposed on both sides of the housing 104; Two sets of screws 202 are respectively fitted onto two sets of internal threaded fittings 201; Two sets of clamping blocks 203 are slidably installed on both sides inside the housing 104, and the two sets of clamping blocks 203 are rotatably connected to the ends of the two sets of screws 202 respectively. The stepped structure 204 is arranged oppositely on the two sets of clamping blocks 203; It also includes elastic compression tablet 301; Two sets of elastic pressure plates 301 are respectively arranged on the upper and lower sides inside the opening of the housing 104; The isolation sheet 105 is made of PU polyurethane material; In this embodiment, during testing, connector 102 is connected to the signal processing and analysis unit. Then, a person holds the operating handle 103 and moves the isolating plate 105 into the gap between the telephone's security unit and the audio distribution unit terminal block. At this time, conductive copper paint 106 connects the telephone to the signal processing and analysis unit. By using the isolating plate 105 to isolate the upper and lower ends of the audio distribution unit, the connection between the exchange side and the user side can be effectively isolated without removing the security unit. The alligator clip is then installed at the lower end of the audio distribution unit, and a test call is made to ensure good contact with the audio distribution unit during use. It does not require removing the safety unit and can isolate the fault point, thus shortening the testing time. After the rear end of the isolation plate 105 is inserted into the conductive socket in the housing 104, the isolation plate 105 is clamped and fixed by rotating and moving the screws 202 on both sides, which causes the two sets of screws 202 to move closer to each other. This improves the installation firmness of the isolation plate 105 and the convenience of disassembling and replacing the isolation plate 105. By setting the stepped structure 204, it is easy to fix and limit the isolation plate 105 of different thicknesses, reducing the limitations of use.

[0021] The main functions achieved by this invention are: 1. By combining physical access methods with intelligent functional units, comprehensive and in-depth testing from basic electrical parameters to call signaling can be achieved without affecting user calls. It does not require disconnecting the security unit and can isolate fault points, thus shortening the testing time. 2. By integrating dialing testing, automatic signal tone recognition, and electrical parameter measurement, the testing process is automated, significantly reducing reliance on the experience of maintenance personnel, improving the accuracy and efficiency of testing, and making it easy to adapt to different work scenarios; 3. Improve the ease of disassembly and replacement of the isolation plate 105. By setting the stepped structure 204, it is easy to fix and limit the isolation plate 105 of different thicknesses, reducing the limitations of use.

[0022] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An audio wiring testing system and apparatus, characterized in that, It includes a test access unit, a signal processing and analysis unit, a control and interaction unit, and a data storage unit; Test access unit: Inserted as a conductive path into the gap between the protection unit and the audio distribution unit terminal block of the test telephone. When inserted into place, this conductive path temporarily bypasses the overvoltage protection component in the protection unit, and at the same time establishes a low-resistance, safe electrical test path between the test system and the target line. The signal processing and analysis unit includes a parameter acquisition module and an overvoltage protection component detection module; Signal processing and analysis unit: Electrically connected to the test access unit, it processes and analyzes signals from the test path. At the same time, it uses the parameter acquisition module to synchronously acquire voltage, current, and phase difference of each channel, calculates contact resistance, insulation resistance, and crosstalk data, and injects test signals in reverse through the overvoltage protection component detection module to detect the response time of the overvoltage protection component. Data storage unit: Stores raw test data and analysis results, and supports historical data tracing; Control and Interaction Unit: Includes a microcontroller (MCU), communication interface, and alarm module. It is connected to the signal processing and analysis unit to control the entire testing process and provide a human-machine interface. It supports test parameter configuration, result display, and report generation. The alarm module marks non-conforming items with audible and visual prompts and displays the fault types and locations such as open circuit, short circuit, poor contact, insulation failure, and overvoltage protection failure on the screen.

2. The audio wiring test system and apparatus as described in claim 1, characterized in that, The signal processing and analysis unit also includes a signal coupling and isolation module, an audio processing and decoding module, and an electrical parameter measurement module; Signal coupling and isolation module: It adopts an inductive coupler to safely inject test signals into the circuit and couple the audio signaling signal returned from the circuit to the analysis circuit with high fidelity, so as to achieve electrical isolation between the internal circuit of the test system and the external circuit. Audio processing and decoding module: It uses an analog-to-digital converter (ADC) and a digital signal processor (DSP) to capture, filter and decode audio signals on the line. It has dual-tone multi-frequency (DTMF) signal decoding function, can identify the number dialed by the user, and has built-in feature library and pattern matching algorithm for standard dial tone, busy tone, ringback tone and congestion tone signal tone to automatically analyze and determine the type and status of the signal tone returned from the switch side. Electrical parameter measurement module: Used to measure the DC voltage, loop current, insulation resistance, and capacitance of the line, providing quantitative basis for judging line open circuit, short circuit, grounding, and insulation deterioration faults.

3. The audio wiring test system and apparatus as described in claim 1, characterized in that, The control and interaction unit also includes a test logic controller and a result display and recording module; Test logic controller: It is used to automatically schedule the corresponding modules in the signal processing and analysis unit to work according to the test mode selected by the user, such as monitoring the signal tone on the switch side, simulating the user's off-hook dialing, and testing the external line parameters, and execute the test steps in a preset logical order; The results display and recording module is used to present the numbers, signal tone types, and parameter measurement results identified by the signal processing and analysis unit to the operation and maintenance personnel in a visual manner. It can also store test results, time, and line identification information locally or upload them.

4. The audio wiring test system and apparatus as described in claim 1, characterized in that, It also includes an active line status monitoring unit and a spectrum analyzer module; Active line status monitoring unit: It uses accelerometers and temperature sensors to monitor line vibration and temperature changes in real time, and combines electrical parameters to comprehensively judge the stability of physical connections and provide early warning of poor contact caused by vibration; Spectrum analyzer module: Scans the line for radiated interference in the 150kHz-30MHz frequency band, detects whether it complies with communication standards, and avoids voice distortion or data packet loss caused by electromagnetic compatibility issues.

5. The audio wiring test system and apparatus as described in claim 1, characterized in that, It also includes a digital twin and health record module for the lines and a predictive maintenance analytics engine; Line Digital Twin and Health Record Module: Creates a digital twin record for each tested line. The parameters, waveforms, and diagnostic conclusions in each test result are stored as a time slice in the data storage unit of the record, and then the trend curves of key parameters changing over time are visualized. Predictive maintenance analytics engine: Uses trend curves and machine learning algorithms to identify the slow degradation process of parameters.

6. The audio wiring test system and apparatus as described in claim 1, characterized in that, The control and interaction unit also includes a real-time screen sharing and audio / video communication module and a cloud synchronization module for the test process and knowledge base. Real-time screen sharing and audio / video communication module: Utilizing wireless communication, the test interface, real-time waveforms, and camera images are encoded with low latency and pushed to the cloud or expert seats. Backend experts can view them in real time via PC or mobile devices and provide remote guidance through voice or screen annotations. The cloud-synchronized testing process and knowledge base module allows users to upload their custom, high-efficiency test scripts to the cloud for sharing. Novice operators can download best practice test solutions created by experienced engineers from the cloud to quickly improve their skills and ensure consistent testing standards.

7. The audio wiring test system and apparatus as described in claim 1, characterized in that, The test access unit includes a power cord (101), a connector (102), an operating handle (103), a housing (104), an insulating plate (105), conductive copper paint (106), and anti-slip protrusions (107). The connector (102) is connected to the rear end of the power cord (101); The operating handle (103) is mounted on the front end of the power cord (101); The housing (104) is installed on the outer wall of the operating handle (103). The front end of the housing (104) is provided with an opening, and a conductive socket is provided inside the opening. The conductive socket is connected to the front end of the power cord (101). Conductive copper paint (106) is applied to the outer wall of the insulating sheet (105); The rear end of the isolation plate (105) is inserted into the conductive socket, and the conductive copper paint (106) is connected to the conductive socket; Anti-slip protrusions (107) are provided on the outer wall of the operating handle (103).

8. The audio wiring test system and apparatus as described in claim 7, characterized in that, It also includes an internal thread kit (201), a screw (202), a clamping block (203), and a stepped structure (204). Two sets of internal threaded fittings (201) are respectively disposed on both sides of the housing (104); Two sets of screws (202) are respectively fitted onto two sets of internal threaded fittings (201); Two sets of clamping blocks (203) are slidably installed on both sides inside the housing (104), and the two sets of clamping blocks (203) are rotatably connected to the ends of the two sets of screws (202); The stepped structure (204) is arranged opposite to each other on the two sets of clamping blocks (203).

9. The audio wiring test system and apparatus as described in claim 7, characterized in that, It also includes elastic compression tablets (301); Two sets of elastic pressure plates (301) are respectively set on the upper and lower sides of the opening of the housing (104).

10. The audio wiring test system and apparatus as described in claim 7, characterized in that, The isolation sheet (105) is made of PU polyurethane material.

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