Device and method for detecting composite cable containing network communication

Abstract

The invention relates to composite cable detection, in particular to a device and a method for detecting a network communication composite cable. Comprising a control unit, a detection module and an interface module, the control unit comprises an instruction issuing unit mcuA, a data processing unit mcuB and an embedded display terminal, wherein the data processing unit mcuB and the embedded display terminal are connected with the instruction issuing unit mcuA. The detection module comprises an insulation resistance detection system, an on resistance detection system and a network communication performance detection system which are connected with the data processing unit mcuB; the interface module comprises an on-resistance test port and an insulation resistance test port, and the on-resistance test port is connected with the on-resistance detection system; the insulation resistance test port is connected with the insulation resistance detection system. According to the invention, testing of parameters such as resistance of the wire cores, insulation between the wire cores or wire core connectors, voltage resistance and network communication performance can be completed at the same time, cable faults can be rapidly positioned, and application is convenient and rapid.

Description

Technical Field

[0001] The present invention relates to composite cable detection, and in particular to a detection device and method for a composite cable containing network communication. Background Art

[0002] As the foundation of digital and information-based signal transmission, network cable transmission has become widely used in the information transmission field due to its strong anti-interference capabilities and fast response speed. With the development of equipment automation and digitalization, network communication is not only essential for long-distance transmission, but also widely used for medium- and short-distance transmission, especially for information exchange between components within major equipment in various industries. Cables for medium- and short-distance transmission include not only network signal cores, but also traditional cables such as those for analog signals and I / O signals. To ensure the transmission performance and functionality of these medium- and short-distance composite cables, relevant parameters such as the resistance of the traditional core, the insulation between cores or between cores and connectors, and network communication performance must be tested.

[0003] Currently, the testing of these parameters is completed with the help of traditional multimeters, safety testers and network communication performance testers through relevant conversion interfaces. The testing process is cumbersome, the testing tasks are complex and the efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problems that the existing detection devices are completed by traditional multimeters, safety testers and network communication performance testers through related conversion interfaces, resulting in cumbersome testing processes, complex testing tasks and low efficiency, and to provide a detection device and method containing a network communication composite cable.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A detection device containing a network communication composite cable comprises a control unit, a detection module and an interface module connected in sequence;

[0007] The control unit includes an instruction issuing unit mcuA, a data processing unit mcuB connected to the instruction issuing unit mcuA, and an embedded display terminal;

[0008] The detection module includes an insulation resistance detection system and an on-resistance detection system connected to the data processing unit mcuB;

[0009] The interface module includes an IN1 / XS1 interface, an IN2 / XS2 interface and an IN3 / XS3 interface;

[0010] The IN1 / XS1 interface and the IN2 / XS2 interface form an on-resistance test port, and the on-resistance test port is connected to the on-resistance detection system;

[0011] The IN2 / XS2 interface and the IN3 / XS3 interface form an insulation resistance test port, and the insulation resistance test port is connected to the insulation resistance detection system.

[0012] Furthermore, the insulation resistance detection system includes a high-voltage operational amplifier, an analog / digital converter, and a power supply module for applying an insulation test voltage to the insulation resistance test port;

[0013] The insulation resistance test port, the high-voltage operational amplifier, the analog / digital converter, and the data processing unit mcuB are connected in sequence;

[0014] The high-voltage operational amplifier amplifies the insulation current of the insulation resistance test port and transmits it to the analog / digital converter, which converts the insulation current into an insulation current digital signal.

[0015] The analog / digital converter transmits the insulation current digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the insulation resistance value according to the insulation test voltage and the insulation current digital signal.

[0016] Furthermore, the power supply module includes a pulse width modulator, an analog switch, a step-up transformer, a voltage doubling circuit and an insulation test range selection module connected in sequence;

[0017] The insulation test range selection module is connected to the insulation resistance test port.

[0018] Furthermore, the on-resistance detection system includes an amplifier connected to the on-resistance test port and the analog / digital converter, and a constant current source for applying an on-resistance test current to the on-resistance test port;

[0019] The amplifier amplifies the on-state voltage of the on-state resistance test port and transmits the amplified voltage to the analog / digital converter, which converts the on-state voltage into an on-state voltage digital signal.

[0020] The analog / digital converter transmits the on-state voltage digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the on-state resistance according to the on-state test current and the on-state voltage digital signal.

[0021] A method for detecting a composite cable containing network communications comprises the following steps:

[0022] 1) Configuration number:

[0023] Assign numbers to each core in the composite cable to be tested;

[0024] 2) Test preparation:

[0025] Sort the numbers of the cores in the composite cable and select the test function according to the sorting to perform the test;

[0026] If you choose the continuity resistance test, insert both ends of the wire core into the continuity resistance test port and proceed to step 3);

[0027] If you choose insulation resistance test, insert both ends of the wire into the insulation resistance test port and proceed to step 4);

[0028] If you choose the network communication performance test, connect the two ends of the wire core to the instruction issuing unit mcuA and the data processing unit mcuB respectively, and execute step 5);

[0029] 3) On-resistance test:

[0030] Sending an on-resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA;

[0031] After the data processing unit mcuB receives the on-resistance test instruction, the data processing unit mcuB controls the constant current source to apply the on-resistance test current to the on-resistance test port;

[0032] The data processing unit mcuB controls the on-resistance test module to collect the on-voltage of the on-resistance test port, and the data processing unit mcuB obtains the on-resistance according to the on-voltage and the on-test current;

[0033] The data processing unit mcuB transmits the on-resistance to the instruction issuing unit mcuA and displays it through the embedded display terminal;

[0034] 4) Insulation resistance test:

[0035] Send an insulation resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA;

[0036] After the data processing unit mcuB receives the insulation resistance test instruction, the data processing unit mcuB controls the power supply to apply the insulation test voltage to the insulation resistance test port;

[0037] The data processing unit mcuB controls the insulation resistance test module to collect the insulation current of the insulation resistance test port, and the data processing unit mcuB obtains the insulation resistance according to the insulation current and the insulation test voltage;

[0038] The data processing unit mcuB transmits the insulation resistance to the instruction issuing unit mcuA, and displays it through the embedded display terminal;

[0039] 5) Network communication performance test:

[0040] Send a network communication performance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA;

[0041] After the data processing unit mcuB receives the network communication performance test instruction, the instruction issuing unit mcuA and the data processing unit mcuB send and receive multiple sets of data to each other;

[0042] The instruction issuing unit mcuA and the data processing unit mcuB respectively perform data sending and receiving detection, obtain the network communication performance test results, and display them through the embedded display terminal;

[0043] 6) Data preservation:

[0044] The instruction issuing unit mcuA saves the on-resistance, insulation resistance and network communication performance test results of the numbered cores in the composite cable and saves them in xlsx format;

[0045] 7) Repeat steps 2) to 6) to traverse the cores of each number in the composite cable to complete the detection of the composite cable containing network communication.

[0046] Furthermore, in step 3), the instruction issuing unit mcuA determines whether the on-resistance test is qualified based on whether the on-resistance of the inner core of the composite cable falls within the set on-resistance standard range;

[0047] If the on-resistance of the core in the composite cable falls within the set on-resistance standard range, the on-resistance test of the core passes;

[0048] Otherwise, the on-resistance test fails;

[0049] The instruction issuing unit mcuA displays the on-resistance and the on-resistance test result through the embedded display terminal.

[0050] Furthermore, in step 4), the instruction issuing unit mcuA determines whether the insulation resistance test is qualified based on whether the insulation resistance of the inner core of the composite cable falls within the set insulation resistance standard range;

[0051] If the insulation resistance of the core of the composite cable falls within the set insulation resistance standard range, the insulation resistance test of the core is qualified;

[0052] Otherwise, the insulation resistance test fails;

[0053] The instruction issuing unit mcuA displays the insulation resistance and the insulation resistance test result through the embedded display terminal.

[0054] Furthermore, in step 5), if the instruction issuing unit mcuA does not detect that communication has been established with the data processing unit mcuB, the line core is in a disconnected state, and the network communication performance test result is unqualified;

[0055] Otherwise, the line core is in the connected state; when the line core is in the connected state, the instruction issuing unit mcuA and the data processing unit mcuB respectively perform data sending and receiving detection, and the instruction issuing unit mcuA and the data processing unit mcuB respectively obtain the packet loss rate. If the packet loss rate falls within the set packet loss rate standard range, the network communication performance test result is qualified; otherwise, the network communication performance test result is unqualified;

[0056] The instruction issuing unit mcuA displays the disconnection state or connection state of the line core, the packet loss rate and the network communication performance test results through the embedded display terminal.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] The detection device and method provided by the present invention for a composite network communication cable can simultaneously complete the testing of the on-resistance, insulation resistance and network communication performance parameters of the wire core, which is convenient for quickly locating whether there is a fault in the wire core in the cable; during the test process, the composite cable can be directly connected for testing without the need for environment construction and interface conversion, making the test convenient and fast, and enabling dynamic access to test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 This is a schematic diagram of the framework structure of an embodiment of a detection device containing a network communication composite cable according to the present invention;

[0060] Figure 2 This is a structural diagram of an insulation resistance testing system in an embodiment of a detection device containing a network communication composite cable according to the present invention;

[0061] Figure 3 This is a structural diagram of a conduction resistance test system in an embodiment of a detection device containing a network communication composite cable according to the present invention;

[0062] Figure 4 This is a detection flow chart of an embodiment of a detection method for a network communication composite cable according to the present invention. DETAILED DESCRIPTION

[0063] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0064] like Figure 1 As shown, a detection device containing a network communication composite cable includes a control unit, a detection module and an interface module connected in sequence;

[0065] The control unit includes an instruction issuing unit mcuA, a data processing unit mcuB connected to the instruction issuing unit mcuA, and an embedded display terminal;

[0066] The detection module includes an insulation resistance detection system and a conduction resistance detection system connected to the data processing unit mcuB;

[0067] The interface module includes IN1 / XS1 interface, IN2 / XS2 interface and IN3 / XS3 interface;

[0068] The IN1 / XS1 interface and the IN2 / XS2 interface form a conduction resistance test port. When performing a conduction resistance test, the two ends of the composite cable core are connected to the IN1 / XS1 interface and the IN2 / XS2 interface respectively, and the conduction resistance test port is connected to the conduction resistance detection system;

[0069] The IN2 / XS2 interface and the IN3 / XS3 interface form an insulation resistance test port. When performing an insulation resistance test, the two ends of the composite cable core are connected to the IN2 / XS2 interface and the IN3 / XS3 interface respectively, and the insulation resistance test port is connected to the insulation resistance detection system.

[0070] like Figure 2 As shown, the insulation resistance detection system includes a high-voltage operational amplifier, an analog / digital converter, and a power supply module for applying an insulation test voltage to an insulation resistance test port;

[0071] The insulation resistance test port, the high-voltage operational amplifier, the analog / digital converter, and the data processing unit mcuB are connected in sequence;

[0072] The high-voltage operational amplifier amplifies the insulation current of the insulation resistance test port and transmits it to the analog / digital converter, which converts the insulation current into an insulation current digital signal.

[0073] The analog / digital converter transmits the insulation current digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the insulation resistance value based on the insulation test voltage and the insulation current digital signal; the data processing unit mcuB obtains the insulation resistance value based on the insulation test voltage and the insulation current digital signal through Ohm's law I=U / R, where insulation resistance value=insulation test voltage / insulation current digital signal.

[0074] like Figure 2As shown, the power supply module includes a pulse width modulator, an analog switch, a step-up transformer, a voltage multiplier circuit and an insulation test range selection module connected in sequence;

[0075] The insulation test range selection module is connected to the insulation resistance test port.

[0076] like Figure 3 As shown, the on-resistance detection system includes an amplifier connected to an on-resistance test port and an analog / digital converter, and a constant current source for applying an on-resistance test current to the on-resistance test port;

[0077] The amplifier amplifies the on-state voltage of the on-state resistance test port and transmits the amplified voltage to the analog / digital converter, which converts the on-state voltage into an on-state voltage digital signal.

[0078] The analog / digital converter transmits the on-state voltage digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the on-state resistance based on the on-state test current and the on-state voltage digital signal; the data processing unit mcuB obtains the on-state resistance value based on the on-state test current and the on-state voltage digital signal through Ohm's law I=U / R, where the on-state resistance value=on-state voltage digital signal / on-state test current.

[0079] like Figure 4 As shown, a method for detecting a network communication composite cable includes the following steps:

[0080] 1) Configuration number:

[0081] Assign numbers to each core in the composite cable to be tested;

[0082] 2) Test preparation:

[0083] Sort the numbers of the cores in the composite cable and select the test function according to the sorting to perform the test;

[0084] If you choose the continuity resistance test, insert both ends of the wire core into the continuity resistance test port and proceed to step 3);

[0085] If you choose insulation resistance test, insert both ends of the wire into the insulation resistance test port and proceed to step 4);

[0086] If you choose the network communication performance test, connect the two ends of the wire core to the instruction issuing unit mcuA and the data processing unit mcuB respectively, and execute step 5);

[0087] 3) On-resistance test:

[0088] Sending an on-resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA;

[0089] After the data processing unit mcuB receives the on-resistance test instruction, the data processing unit mcuB controls the constant current source to apply the on-resistance test current to the on-resistance test port;

[0090] The data processing unit mcuB controls the on-resistance test module to collect the on-voltage of the on-resistance test port, and the data processing unit mcuB obtains the on-resistance according to the on-voltage and the on-test current;

[0091] The data processing unit mcuB transmits the on-resistance to the instruction issuing unit mcuA. The instruction issuing unit mcuA determines whether the on-resistance test is qualified based on whether the on-resistance of the inner core of the composite cable falls within the set on-resistance standard range.

[0092] If the on-resistance of the core in the composite cable falls within the set on-resistance standard range, the on-resistance test of the core passes;

[0093] Otherwise, the on-resistance test fails;

[0094] The instruction issuing unit mcuA displays the on-resistance and on-resistance test results through the embedded display terminal;

[0095] 4) Insulation resistance test:

[0096] Send an insulation resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA;

[0097] After the data processing unit mcuB receives the insulation resistance test instruction, the data processing unit mcuB controls the power supply to apply the insulation test voltage to the insulation resistance test port;

[0098] The data processing unit mcuB controls the insulation resistance test module to collect the insulation current of the insulation resistance test port, and the data processing unit mcuB obtains the insulation resistance according to the insulation current and the insulation test voltage;

[0099] The data processing unit mcuB transmits the insulation resistance to the instruction issuing unit mcuA. The instruction issuing unit mcuA determines whether the insulation resistance test is qualified based on whether the insulation resistance of the inner core of the composite cable falls within the set insulation resistance standard range;

[0100] If the insulation resistance of the core of the composite cable falls within the set insulation resistance standard range, the insulation resistance test of the core is qualified;

[0101] Otherwise, the insulation resistance test fails;

[0102] The instruction issuing unit mcuA displays the insulation resistance and insulation resistance test results through the embedded display terminal;

[0103] 5) Network communication performance test:

[0104] A network communication performance test instruction is sent to the data processing unit mcuB through the instruction issuing unit mcuA. If the instruction issuing unit mcuA fails to detect that communication has been established with the data processing unit mcuB, the line core is disconnected and the network communication performance test result is unqualified.

[0105] Otherwise, the line core is in the connected state; after the data processing unit mcuB receives the network communication performance test instruction, the instruction issuing unit mcuA and the data processing unit mcuB send and receive multiple groups of data to each other;

[0106] When the line core is connected, the instruction issuing unit mcuA and the data processing unit mcuB respectively perform data sending and receiving detection, and obtain the packet loss rate by the instruction issuing unit mcuA and the data processing unit mcuB respectively. If the packet loss rate falls within the set packet loss rate standard range, the network communication performance test result is qualified; otherwise, the network communication performance test result is unqualified;

[0107] The instruction issuing unit mcuA displays the disconnection status or connection status of the line core, the packet loss rate and the network communication performance test results through the embedded display terminal;

[0108] 6) Data preservation:

[0109] The instruction issuing unit mcuA saves the on-resistance, insulation resistance and network communication performance test results of the numbered cores in the composite cable and saves them in xlsx format;

[0110] 7) Repeat steps 2) to 6) to traverse the cores of each number in the composite cable to complete the detection of the composite cable containing network communication.

[0111] In this embodiment, the on-resistance standard range, the insulation resistance standard range, and the packet loss rate standard range can be set according to actual test scenario requirements.

[0112] This embodiment is used to detect the on-resistance, insulation resistance and network communication performance of the wire core in the composite cable containing network communication. It mainly relies on Ohm's law to realize the calculation of on-resistance and insulation resistance. The detection of wire core on-resistance is based on the constant current source method, and the insulation resistance detection is based on the constant voltage source method. Both of them are through the fixed output current value or voltage value, through the precise AD chip acquisition to realize the measurement of the detection signal, and then combined with Ohm's law to calculate the final resistance value.

[0113] When detecting the on-resistance of the detection device containing network communication composite cables, it is based on the four-wire constant current source method. By applying a precisely adjustable standard test current to both ends of the cable core being tested, combined with synchronous sampling technology, and using Ohm's law to calculate the conductor impedance value in real time (accurately measuring small resistance with large current and large resistance with small current), the on-resistance of the cable core can be detected. When the on-resistance starts to run, a resistance collection instruction is sent to the terminal, and the resistance value of the cable core with the corresponding number is returned after receiving the instruction. After receiving the resistance value, it is displayed on the embedded terminal. After completing the resistance test of each core through polling, the on-resistance detection of the core is automatically stopped.

[0114] When testing network communication performance, the detection device containing a network communication composite cable uses the TCP / IP full-duplex protocol to establish a MAC layer link, evaluates data integrity, BER and transmission stability (packet loss rate / timing jitter / CRC anomaly) through UDP frame stress testing, and integrates Wireshark protocol analysis to achieve full-stack diagnosis from the physical layer to the application layer. When the port for the embedded terminal network port test is opened, it communicates with the device, sending and receiving thousands of groups of data simultaneously to verify the stability of the link layer and the frame loss statistics of TCP / IP and UDP data, thereby testing the network communication performance.

[0115] When testing insulation resistance of network communication composite cables, the detection device is based on the constant voltage source method. By applying a precise and switchable voltage value between the wire cores or between the wire cores and the connector, combined with high-precision AD sampling technology, Ohm's law is used to calculate the impedance value between the wires or between the wires and the connectors in real time.

[0116] The detection device containing network communication composite cables is operated on the touch screen during the conduction resistance, insulation resistance and network communication performance tests. After the test runs are completed, click on the data export button and insert the USB flash drive to export the data for review.

[0117] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A detection device containing a network communication composite cable, characterized in that: It includes a control unit, a detection module and an interface module connected in sequence; The control unit includes an instruction issuing unit mcuA, a data processing unit mcuB connected to the instruction issuing unit mcuA, and an embedded display terminal; The detection module includes an insulation resistance detection system and an on-resistance detection system connected to the data processing unit mcuB; The interface module includes an IN1 / XS1 interface, an IN2 / XS2 interface and an IN3 / XS3 interface; The IN1 / XS1 interface and the IN2 / XS2 interface form an on-resistance test port, and the on-resistance test port is connected to the on-resistance detection system; The IN2 / XS2 interface and the IN3 / XS3 interface form an insulation resistance test port, and the insulation resistance test port is connected to the insulation resistance detection system.

2. The detection device containing a network communication composite cable according to claim 1, characterized in that: The insulation resistance detection system includes a high-voltage operational amplifier, an analog / digital converter, and a power supply module for applying an insulation test voltage to the insulation resistance test port; The insulation resistance test port, the high-voltage operational amplifier, the analog / digital converter, and the data processing unit mcuB are connected in sequence; The high-voltage operational amplifier amplifies the insulation current of the insulation resistance test port and transmits it to the analog / digital converter, which converts the insulation current into an insulation current digital signal. The analog / digital converter transmits the insulation current digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the insulation resistance value according to the insulation test voltage and the insulation current digital signal.

3. The detection device containing a network communication composite cable according to claim 2, characterized in that: The power supply module includes a pulse width modulator, an analog switch, a step-up transformer, a voltage multiplier circuit and an insulation test range selection module connected in sequence; The insulation test range selection module is connected to the insulation resistance test port.

4. The detection device containing a network communication composite cable according to claim 1, characterized in that: The on-resistance detection system includes an amplifier connected to an on-resistance test port and an analog / digital converter, and a constant current source for applying an on-resistance test current to the on-resistance test port; The amplifier amplifies the on-state voltage of the on-state resistance test port and transmits the amplified voltage to the analog / digital converter, which converts the on-state voltage into an on-state voltage digital signal. The analog / digital converter transmits the on-state voltage digital signal to the data processing unit mcuB, and the data processing unit mcuB obtains the on-state resistance according to the on-state test current and the on-state voltage digital signal.

5. A detection method based on the detection device containing a network communication composite cable according to claim 1, characterized in that: The steps include: 1) Configuration number: Assign numbers to each core in the composite cable to be tested; 2) Test preparation: Sort the numbers of the cores in the composite cable and select the test function according to the sorting to perform the test; If you choose the continuity resistance test, insert both ends of the wire core into the continuity resistance test port and proceed to step 3); If you choose insulation resistance test, insert both ends of the wire core into the insulation resistance test port and proceed to step 4); If you choose the network communication performance test, connect the two ends of the wire core to the instruction issuing unit mcuA and the data processing unit mcuB respectively, and execute step 5); 3) On-resistance test: Sending an on-resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA; After the data processing unit mcuB receives the on-resistance test instruction, the data processing unit mcuB controls the constant current source to apply the on-resistance test current to the on-resistance test port; The data processing unit mcuB controls the on-resistance test module to collect the on-voltage of the on-resistance test port, and the data processing unit mcuB obtains the on-resistance according to the on-voltage and the on-test current; The data processing unit mcuB transmits the on-resistance to the instruction issuing unit mcuA and displays it through the embedded display terminal; 4) Insulation resistance test: Send an insulation resistance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA; After the data processing unit mcuB receives the insulation resistance test instruction, the data processing unit mcuB controls the power supply to apply the insulation test voltage to the insulation resistance test port; The data processing unit mcuB controls the insulation resistance test module to collect the insulation current of the insulation resistance test port, and the data processing unit mcuB obtains the insulation resistance according to the insulation current and the insulation test voltage; The data processing unit mcuB transmits the insulation resistance to the instruction issuing unit mcuA, and displays it through the embedded display terminal; 5) Network communication performance test: Send a network communication performance test instruction to the data processing unit mcuB through the instruction issuing unit mcuA; After the data processing unit mcuB receives the network communication performance test instruction, the instruction issuing unit mcuA and the data processing unit mcuB send and receive multiple sets of data to each other; The instruction issuing unit mcuA and the data processing unit mcuB respectively perform data sending and receiving detection, obtain the network communication performance test results, and display them through the embedded display terminal; 6) Data preservation: The instruction issuing unit mcuA saves the on-resistance, insulation resistance and network communication performance test results of the numbered cores in the composite cable and saves them in xlsx format; 7) Repeat steps 2) to 6) to traverse the cores of each number in the composite cable to complete the detection of the composite cable containing network communication.

6. The method for detecting a composite network communication cable according to claim 5, wherein: In step 3), the instruction issuing unit mcuA determines whether the on-resistance test is qualified based on whether the on-resistance of the inner core of the composite cable falls within the set on-resistance standard range; If the on-resistance of the core in the composite cable falls within the set on-resistance standard range, the on-resistance test of the core passes; Otherwise, the on-resistance test fails; The instruction issuing unit mcuA displays the on-resistance and the on-resistance test result through the embedded display terminal.

7. The method for detecting a composite cable containing network communication according to claim 5, characterized in that: In step 4), the instruction issuing unit mcuA determines whether the insulation resistance test is qualified based on whether the insulation resistance of the inner core of the composite cable falls within the set insulation resistance standard range; If the insulation resistance of the core of the composite cable falls within the set insulation resistance standard range, the insulation resistance test of the core is qualified; Otherwise, the insulation resistance test fails; The instruction issuing unit mcuA displays the insulation resistance and the insulation resistance test result through the embedded display terminal.

8. The method for detecting a composite network communication cable according to claim 5, wherein: In step 5), if the instruction issuing unit mcuA does not detect that communication has been established with the data processing unit mcuB, the line core is disconnected and the network communication performance test result is unqualified; Otherwise, the line core is in the connected state; when the line core is in the connected state, the instruction issuing unit mcuA and the data processing unit mcuB respectively perform data sending and receiving detection, and the instruction issuing unit mcuA and the data processing unit mcuB respectively obtain the packet loss rate. If the packet loss rate falls within the set packet loss rate standard range, the network communication performance test result is qualified; otherwise, the network communication performance test result is unqualified; The instruction issuing unit mcuA displays the disconnection state or connection state of the line core, the packet loss rate and the network communication performance test results through the embedded display terminal.

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