TWI850964B - Cable detection method and detection device - Google Patents

Abstract

Disclosed is a cable detection method, which is applied to the detection of a cable including a plurality of wires, and includes: outputting a signal to one end of a wire to perform a straight-through test, an overvoltage and overcurrent protection test, and a short-circuit test in sequence; outputting a signal to the other end of the wire to perform another straight-through test, another overvoltage and overcurrent protection test, and another short-circuit test in sequence if the straight-through test is abnormal; inputting a signal to a second semi-conduction detection circuit connected to the other end of the wire to perform a semi-conductive self-test if the another straight-through test is abnormal; inputting a signal to a first semi-conductive detection circuit connected to one end of the wire to perform another semi-conductive self-test if the semi-conductive self-test is abnormal; performing a detection on the next wire until the detection of each wire of the cable is completed if the straight-through test, the overvoltage and overcurrent protection test and the short-circuit test are passed sequentially, or the semi-conductive self-test is passed.

Description

Cable detection method and detection device

The present application relates to the field of cable detection technology, and more particularly to a cable detection method and a detection device.

Mobile phones, cameras, tablet computers, headphones and other electronic products often use cables (such as charging data cables, data cables, high-frequency signal cables and power strips) and external devices to transmit power or data. Current cables can have functions such as anti-counterfeiting, authentication, communication, and modulation of high voltage and current, so that if a short circuit or open circuit occurs during power or data transmission, it can stop working immediately.

As cables have more and more functions, the number of wires included in cables is also increasing. Once any wire fails, it may cause abnormal operation. Therefore, the development and maintenance of cable products cannot be separated from the detection of their own performance.

However, for a cable including multiple wires, it is very laborious to perform various tests on each wire. If the performance test is performed manually, there are problems of low efficiency and easy misdetection or missed detection. Therefore, how to provide a cable detection method and detection device to solve the above problems is a problem that the general knowledge in the field needs to solve.

The present application provides a cable detection method and a detection device, which can solve the problem of low efficiency and easy misdetection or missed detection in the existing manual cable performance detection.

In order to solve the above technical problems, this application is implemented as follows:

The present application provides a cable detection method, which is applied to a cable detection device for detecting a cable. The cable includes a first connector plug, a second connector plug and a plurality of wires connecting the first connector plug and the second connector plug. The first connector plug of the cable is connected to a first adapter connector of the cable detection device, and the second connector plug of the cable is connected to a second adapter connector of the cable detection device. The cable detection device includes a first detection module, a second detection module, a first half-conduction detection circuit and a second half-conduction detection circuit arranged corresponding to each wire. The first detection module and the first half-conduction detection circuit are connected to the first adapter connector, and the second detection module and the second half-conduction detection circuit are connected to the second adapter connector. The cable detection method comprises the following steps: (A) outputting a first test electrical signal from a first adapter connector to a certain wire, and sequentially performing a through test, an overvoltage and overcurrent protection test through a second detection module corresponding to the certain wire, and performing a short circuit test through a second detection module corresponding to other wires other than the certain wire; (B) if the through test is abnormal, outputting a second test electrical signal from a second adapter connector to the certain wire, and sequentially performing another through test, another overvoltage and overcurrent protection test through a first detection module corresponding to the certain wire, and performing another short circuit test through a first detection module corresponding to other wires other than the certain wire; (C) if the other through test is abnormal, inputting a third test electrical signal to a second semi-conducting detection module set corresponding to the certain wire; (D) if the half-conduction self-check is abnormal, a fourth test signal is input to the first half-conduction detection circuit corresponding to the certain wire, and another half-conduction self-check is performed on the certain wire based on the voltage division principle; (E) if the overvoltage and overcurrent protection test, the short circuit test, another overvoltage and overcurrent protection test, another short circuit test are abnormal, (F) if the through test, overvoltage and overcurrent protection test and short circuit test are passed in sequence, another through test, another overvoltage and overcurrent protection test and another short circuit test are passed in sequence, or the half-conduction self-test or the other half-conduction self-test is passed, return to step (A) to test the next wire until all wires of the cable are tested.

The present application provides a cable detection device, which includes: a first adapter connector, a second adapter connector, N first current source modules, N second current source modules, N first half-conduction detection circuits, N second half-conduction detection circuits, N first detection modules, N second detection modules and a processing module, where N is a positive integer greater than 1. The first adapter connector is configured to be connected to a first connector plug of a cable, and the cable includes N wires; the second adapter connector is configured to be connected to a second connector plug of the cable; N first current source modules, N first half-conduction detection circuits and N first detection modules are respectively connected to the first adapter connector and are configured to be arranged corresponding to the N wires; N second current source modules, N second half-conduction detection circuits and N second detection modules are respectively connected to the second adapter connector and are configured to be arranged corresponding to the N wires; the processing module is connected to the N first current source modules, N second current source modules, N first half-conduction detection circuits, N second half-conduction detection circuits, N first detection modules and N second detection modules.

The processing module is configured to perform the following steps: (a) control a first current source module corresponding to a certain wire to output a first test electrical signal to the certain wire, and sequentially perform a through test, an overvoltage and overcurrent protection test through a second detection module corresponding to the certain wire, and a short circuit test through a second detection module corresponding to other wires other than the certain wire; (b) if the through test is abnormal, control a second current source module corresponding to the certain wire to output a first test electrical signal to the certain wire. The second current source module outputs a second test signal to the certain wire, and sequentially performs another through-test, another overvoltage and overcurrent protection test through the first detection module corresponding to the certain wire, and another short-circuit test through the first detection module corresponding to other wires other than the certain wire; (c) if the other through-test is abnormal, control the second current source module corresponding to the certain wire to output a third test signal to the corresponding certain wire; (d) if the half-conduction self-check is abnormal, control the first current source module corresponding to the certain wire to output a fourth test signal to the first half-conduction detection circuit corresponding to the certain wire, and perform the other half-conduction self-check on the certain wire based on the voltage division principle; (e) if the overvoltage and overcurrent protection test, the short circuit test, or the other half-conduction self-check is abnormal, control the first current source module corresponding to the certain wire to output a fourth test signal to the first half-conduction detection circuit corresponding to the certain wire, and perform the other half-conduction self-check on the certain wire based on the voltage division principle; If an overvoltage and overcurrent protection test, another short-circuit test or the other half-continuity self-test is abnormal, an error prompt is given; and (f) if the through test, overvoltage and overcurrent protection test and short-circuit test are passed in sequence, another through test, another overvoltage and overcurrent protection test and another short-circuit test are passed in sequence, or the half-continuity self-test or the other half-continuity self-test is passed, return to step (a) to test the next wire until the detection of each wire of the cable is completed.

In the embodiment of the present application, the symmetrical design of the cable detection device and the bidirectional detection design of the cable detection method allow the cable to be inserted for detection in any direction regardless of a specific direction. In addition, through the configuration of the first detection module and the second detection module (i.e., the design of step (A) and step (B) of the cable detection method), each wire included in the cable is sequentially subjected to a through test (i.e., whether the wire is in a through state), an overvoltage and overcurrent protection test (i.e., whether overvoltage and overcurrent occur when the wire is through), and a short circuit test (i.e., whether a certain wire is short-circuited with other wires when it is through); and through the first half conduction test, the detection module is used to detect whether the wire is in a through state. The detection circuit and the second semi-conduction detection circuit are set up (i.e., the design of step (C) and step (D) of the cable detection method), and each wire included in the cable is subjected to semi-conduction detection (i.e., determining whether the wire is semi-conducting); therefore, the cable detection method and detection device of the embodiment of the present application can realize bidirectional automatic detection of the cable, reduce labor costs, enhance quality control, improve fool-proof measures, and promote industry development. In addition, the cable detection method and detection device of the embodiment of the present application can be applied to the detection of cables having a chip (e.g., a microcontroller unit) or a metal oxide semiconductor field effect transistor (MOSFET) disposed in the first connector plug and/or the second connector plug.

The following will be used in conjunction with the relevant drawings to illustrate the embodiments of the present invention. In these drawings, the same reference numerals represent the same or similar components or method flows.

It must be understood that the words "comprise", "include" and the like used in this specification are used to indicate the existence of specific technical features, numerical values, method steps, operation processes, elements and/or components, but do not exclude the addition of more technical features, numerical values, method steps, operation processes, elements, components, or any combination of the above.

It must be understood that when a component is described as being "connected" or "coupled" to another component, it can be directly connected or coupled to the other component, and intermediate components may be present. Conversely, when a component is described as being "directly connected" or "directly coupled" to another component, there are no intermediate components.

In addition, although the terms “first”, “second”, etc. are used herein to describe different components, such terms are only used to distinguish components described by the same technical terms.

Please refer to FIG. 1, which is a block diagram of an embodiment of the cable detection device of the present application connected to the cable. As shown in FIG. 1, the cable detection device 1 includes: a first adapter connector 11, a second adapter connector 12, N first current source modules 13, N second current source modules 14, N first half-conduction detection circuits 15, N second half-conduction detection circuits 16, N first detection modules 17, N second detection modules 18 and a processing module 19, where N is a positive integer greater than 1. In this embodiment, N can be but is not limited to 2, but this embodiment is not used to limit the present application.

Please refer to FIG. 2, which is a schematic diagram of a circuit structure of an embodiment of the cable of FIG. 1. As shown in FIG. 2, the cable 2 includes a first connector plug 21, a second connector plug 22, and a wire 23a and a wire 23b connecting the first connector plug 21 and the second connector plug 22, wherein the second connector plug 22 is provided with a microcontroller 231 and a metal oxide semiconductor field effect transistor 232, the microcontroller 231 is connected to one end of the wire 23a, and the metal oxide semiconductor field effect transistor 232 is connected to one end of the wire 23b. In the present embodiment, the first adapter connector 11 and the second adapter connector 12 are arranged on the first connector plug 21 and the second connector plug 22 of the adapter cable 2. The first connector plug 21 and the second connector plug 22 may be, but are not limited to, a Type-C connector, a USB connector, a High Definition Multimedia Interface (HDMI) connector, a Video Graphics Array (VGA) connector, a DB9 connector or an RJ45 connector. The wire 23a and the wire 23b may be, but are not limited to, a transmission line for transmitting a large voltage/current signal (i.e., a charging line) or a transmission line for transmitting a small voltage/current signal (i.e., a data line), but the present embodiment is not intended to limit the present application.

In this embodiment, the first adapter connector 11 is configured to connect to the first connector plug 21 of the cable 2; the second adapter connector 12 is configured to connect to the second connector plug 22 of the cable 2; two first current source modules 13, two first half-conduction detection circuits 15 and two first detection modules 17 are respectively connected to the first adapter connector 11 and are configured to correspond to the wire 23a and the wire 23b (that is, one end of the wire 23a and the wire 23b are respectively connected to a first current source module 13, a first half-conduction detection circuit 15 and a first detection module 17); two second current source modules The group 14, two second half-conduction detection circuits 16 and two second detection modules 18 are respectively connected to the second adapter connector 12 and are configured to correspond to the wire 23a and the wire 23b (that is, the other ends of the wire 23a and the wire 23b are respectively connected to a second current source module 14, a second half-conduction detection circuit 16 and a second detection module 18); the processing module 19 is connected to the two first current source modules 13, the two second current source modules 14, the two first half-conduction detection circuits 15, the two second half-conduction detection circuits 16, the two first detection modules 17 and the two second detection modules 18.

The processing module 19 is configured to perform the following steps: (a) control the first current source module 13 corresponding to the wire 23a to output a first test signal to the wire 23a, and sequentially perform a through test, an overvoltage and overcurrent protection test through the second detection module 18 corresponding to the wire 23a, and a short circuit test through the second detection module 18 corresponding to the wire 23b; (b) if the through test is abnormal, control the second current source module 13 corresponding to the wire 23a to output a first test signal to the wire 23a. (c) if another through test is abnormal, the second current source module 14 of the corresponding wire 23a is controlled to output a third test signal to the first detection module 17 of the corresponding wire 23a, and another through test, another overvoltage and overcurrent protection test, and another short circuit test are performed through the first detection module 17 of the corresponding wire 23b in sequence; (d) if another through test is abnormal, the second current source module 14 of the corresponding wire 23a is controlled to output a third test signal to the first detection module 17 of the corresponding wire 23a. (d) if the half-conduction self-check is abnormal, the first current source module 13 corresponding to the wire 23a is controlled to output a fourth test signal to the first half-conduction detection circuit 15 set for the corresponding wire 23a, and the other half-conduction self-check is performed on the wire 23a based on the voltage division principle; (e) if the overvoltage and overcurrent protection test, the short circuit test, or another overvoltage and overcurrent protection test is abnormal, the first current source module 13 corresponding to the wire 23a is controlled to output a fourth test signal to the first half-conduction detection circuit 15 set for the corresponding wire 23a, and the other half-conduction self-check is performed on the wire 23a based on the voltage division principle; If an abnormality occurs in the protection test, another short-circuit test or the other half-conduction self-test, an error prompt is given; and (f) if it passes the straight-through test, the overvoltage and overcurrent protection test and the short-circuit test in sequence, passes another straight-through test, another overvoltage and overcurrent protection test and another short-circuit test in sequence, or passes the half-conduction self-test or the other half-conduction self-test, then return to step (a) to test the wire 23b until the detection of each wire of the cable 2 is completed.

It should be noted that the sequentially performing of the straight-through test, the overvoltage and overcurrent protection test, and the short-circuit test in step (a) and step (b) means that the overvoltage and overcurrent protection test is performed only after the wire 23a passes the straight-through test (i.e., confirming that the wire 23a is in a straight-through state), and then the short-circuit test (i.e., detecting whether the wire 23a is short-circuited with the wire 23b) is performed only after the wire 23a passes the overvoltage and overcurrent protection test (i.e., confirming that the wire 23a does not have an overvoltage/overcurrent condition).

In one embodiment, each first current source module 13 includes a first switch unit 131 and a first current source unit 132. The first switch unit 131 is connected to the first current source unit 132, the first adapter connector 11 and the processing module 19. The first current source unit 132 is connected to the processing module 19. The processing module 19 controls the on/off state of the first switch unit 131 and controls the first test electrical signal or the fourth test electrical signal output by the first current source unit 132, so that the first current source module 13 outputs the first test electrical signal or the fourth test electrical signal. Electrical signal; each second current source module 14 includes a second switch unit 141 and a second current source unit 142, the second switch unit 141 is connected to the second current source unit 142, the second adapter connector 12 and the processing module 19, the second current source unit 142 is connected to the processing module 19, and the processing module 19 controls the on-off state of the second switch unit 141 and controls the second test electrical signal or the third test electrical signal output by the second current source unit 142, so that the second current source module 14 outputs the second test electrical signal or the third test electrical signal.

In one embodiment, in order to avoid the possibility that the first test electrical signal output by the first current source module 13 flows to the first detection module 17, the first half-conduction detection circuit 15 and the second half-conduction detection circuit 16, and the possibility that the fourth test electrical signal output by the first current source module 13 flows to the first detection module 17, the second detection module 18 and the second half-conduction detection circuit 16, the first detection module 17, the second detection module 18, the first half-conduction detection circuit 15 and the second half-conduction detection circuit 16 may each include a first detection module 17, a second detection module 18, a first half-conduction detection circuit 15 and a second half-conduction detection circuit 16. The three switch units 50, the third switch unit 50 are all connected to the processing module 19; the processing module 19 can simultaneously control the on and off states of the first switch unit 131 and the third switch unit 50 and control the first test electrical signal or the fourth test electrical signal output by the first current source unit 132, so that the first test electrical signal output by the first current source unit 132 only flows to the second detection module 18 through the corresponding wire, and the fourth test electrical signal output by the first current source unit 132 only flows to the first half-conduction detection circuit 15 through the corresponding wire. Similarly, the second test electrical signal output by the second current source module 14 may flow to the second detection module 18, the first half-conduction detection circuit 15 and the second half-conduction detection circuit 16, and the third test electrical signal output by the second current source module 14 may flow to the first detection module 17, the second detection module 18 and the first half-conduction detection circuit 15. The processing module 19 can simultaneously control the on/off states of the second switch unit 141 and the third switch unit 50 and control the second test electrical signal or the third test electrical signal output by the second current source unit 142, so that the second test electrical signal output by the second current source unit 142 only flows to the first detection module 17 through the corresponding wires, and the third test electrical signal output by the second current source unit 142 only flows to the second half-conduction detection circuit 16 through the corresponding wires.

Please refer to FIG3, which is a connection diagram of an embodiment of the processing module, the second adapter connector, and the second detection module of FIG1. As shown in FIG3, each second detection module 18 may also include a second resistor voltage-dividing sampling circuit 181, a second short-circuit/open-circuit detection circuit 182, and a second overvoltage and overcurrent protection circuit 183, wherein the second resistor voltage-dividing sampling circuit 181 includes a load resistor 1811 and a sampling resistor 1812 connected in series, one end of the load resistor 1811 is connected to the second adapter connector 12 and one end of the second short-circuit/open-circuit detection circuit 182, and the other end of the load resistor 1811 is connected to the sampling resistor 1812. 12, the other end of the sampling resistor 1812 is grounded, the voltage dividing part of the second resistor voltage dividing sampling circuit 181 is connected to one end of the second overvoltage and overcurrent protection circuit 183, the other end of the second short circuit/open circuit detection circuit 182 and the other end of the second overvoltage and overcurrent protection circuit 183 are connected to the processing module 19, the resistance value of the load resistor 1811 is greater than the resistance value of the sampling resistor 1812, and the resistance value of the load resistor 1811 can be adjusted according to the electric power of the electronic product applied to the cable 2. Therefore, by setting up the second resistor voltage-dividing sampling circuit 181, a surge protection function of large voltage and large current can be provided, and the second detection module 18 can perform a through test with a load, an overvoltage and overcurrent protection test, and a short circuit test; by setting up the second resistor voltage-dividing sampling circuit 181, the second short circuit/open circuit detection circuit 182, and the second overvoltage and overcurrent protection circuit 183, the step (a) may include: judging by the second short circuit/open circuit detection circuit 182 whether the end of the wire 23a connected to the second adapter connector 12 has a voltage corresponding to the first test circuit; The feedback electrical signal of the signal, if any, the straight-through test is normal, otherwise the straight-through test is abnormal; through the second overvoltage and overcurrent protection circuit 183, it is judged whether overvoltage and overcurrent occur at one end of the wire 23a connected to the second adapter connector 12, if so, the overvoltage and overcurrent protection test is abnormal, otherwise the overvoltage and overcurrent protection test is normal; and through the second short circuit/open circuit detection circuit 182 corresponding to the wire 23b, it is judged whether one end of the wire 23b connected to the second adapter connector 12 has a response electrical signal, if so, the short circuit test is abnormal, otherwise the short circuit test is normal.

Specifically, when the processing module 19 controls the first current source module 13 corresponding to the wire 23a to output the first test signal to the wire 23a, the processing module 19 first obtains the voltage of the end of the wire 23a connected to the second adapter connector 12 through the second short circuit/open circuit detection circuit 182 corresponding to the wire 23a, and then determines whether the end of the wire 23a connected to the second adapter connector 12 has a feedback signal (if the wire 23a is connected to the second adapter connector 12 If the voltage at one end of the wire 23a is greater than the first reference voltage, it means that the end of the wire 23a connected to the second adapter connector 12 has a feedback signal, and the wire 23a is in a straight-through state). If so, it means that the straight-through test is normal (i.e., it passes the straight-through test), otherwise, the straight-through test is abnormal. After the processing module 19 determines that the wire 23a passes the straight-through test, it obtains the voltage at the voltage division point of the second resistor voltage division sampling circuit 181 through the second overvoltage and overcurrent protection circuit 183, and then determines whether the wire 23a passes the straight-through test. The wire 23a is connected to one end of the second adapter connector 12 to check whether overvoltage or overcurrent occurs (if the voltage of the sampling resistor 1812 is greater than the second reference voltage, it means that overvoltage or overcurrent occurs). If overvoltage or overcurrent does not occur, it means that the overvoltage or overcurrent protection test is normal (i.e., it passes the overvoltage or overcurrent protection test). Otherwise, the overvoltage or overcurrent protection test is abnormal. After the processing module 19 determines that the wire 23a passes the overvoltage or overcurrent protection test, it performs the second short circuit/open circuit detection of the corresponding wire 23b. The circuit 182 obtains the voltage of the end of the wire 23b connected to the second adapter connector 12, and then determines whether the end of the wire 23b connected to the second adapter connector 12 has a response electrical signal (if the voltage of the end of the wire 23b connected to the second adapter connector 12 is greater than the third reference voltage, it means that the wire 23a and the wire 23b are short-circuited). If the wire 23a is not short-circuited with the wire 23b, it means that the short-circuit test is normal, otherwise the short-circuit test is abnormal. Among them, the first reference voltage, the second reference voltage and the third reference voltage can be adjusted according to actual needs.

In one embodiment, each second short circuit/open circuit detection circuit 182 may include a second sampling unit 1821 and a third comparator 1822, one end of the second sampling unit 1821 is connected to one end of the load resistor 1811, and the other end of the second sampling unit 1821 is connected to the input terminal Vin1 of the third comparator 1822; the third comparator 1822 is configured to compare the voltage of the input terminal Vin1 with the preset voltage Vref1 of the other input terminal Vin2 and then output a third comparison level to the processing module 19, so that the processing module 19 determines whether the through test or short circuit test of the corresponding wire is normal based on the third comparison level. The preset voltage Vref1 can be provided by setting additional hardware (e.g., a fixed resistor voltage divider circuit or an adjustable resistor voltage divider circuit), or by the processing module 19. In this embodiment, the third comparator 1822 is provided to prevent the processing module 19 from making an erroneous judgment on the test result due to the voltage fluctuation of the input terminal Vin1. For example, when the processing module 19 performs a through test on the wire 23a, if the third comparison level is a high level (i.e., the voltage at the input terminal Vin1 is greater than the preset voltage Vref1 at the input terminal Vin2), the processing module 19 determines that the through test is normal, otherwise, the through test is abnormal; when the processing module 19 performs a short-circuit test on the wire 23a, if the third comparison level is a high level (i.e., the voltage at the input terminal Vin1 is greater than the preset voltage Vref1 at the input terminal Vin2), the processing module 19 determines that the short-circuit test is abnormal, otherwise, the short-circuit test is normal.

In one embodiment, each second overvoltage and overcurrent protection circuit 183 includes a second amplifier 1831 and a fourth comparator 1832, one end of the second amplifier 1831 is connected to the voltage divider of the second resistor divider sampling circuit 181, and the other end of the second amplifier 1831 is connected to the input terminal Vin3 of the fourth comparator 1832; the fourth comparator 1832 is configured to compare the voltage of the input terminal Vin3 with the preset voltage Vref2 of the other input terminal Vin4 and then output a fourth comparison level to the processing module 19, so that the processing module 19 determines whether the overvoltage and overcurrent protection test of the corresponding wire is normal based on the fourth comparison level. The preset voltage Vref2 may be provided by setting additional hardware (for example, a fixed resistor voltage divider circuit or an adjustable resistor voltage divider circuit), or the processing module 19 may provide the preset voltage Vref2. In this embodiment, the fourth comparator 1832 is set to prevent the processing module 19 from making an erroneous judgment on the test result due to the voltage fluctuation of the input terminal Vin3; the second overvoltage and overcurrent protection circuit 183 is connected to the voltage dividing point of the second resistor voltage dividing sampling circuit 181 to implement a step-down current limiting resistor voltage dividing protection measure. When the voltage of the sampling resistor 1812 increases and is greater than the preset voltage Vref2 of the input terminal Vin4 of the fourth comparator 1832, it indicates that an overvoltage/overcurrent abnormality has occurred. For example, when the processing module 19 performs an overvoltage and overcurrent protection test on the wire 23a, if the fourth comparison level is a high level (the voltage of the input terminal Vin3 is greater than the preset voltage Vref2 of the input terminal Vin4), the processing module 19 determines that the overvoltage and overcurrent protection test is abnormal, otherwise it determines that the overvoltage and overcurrent protection test is normal.

It should be noted that the cable detection device 1 adopts a symmetrical design, and the structures and operating principles of the first detection module 17 and the second detection module 18 are similar. Therefore, the operation process of step (b) is similar to step (a), so it will not be repeated.

Please refer to FIG. 4, which is a connection diagram of an embodiment of the processing module, the second current source module, the second adapter connector, and the second half conduction detection circuit of FIG. 1. As shown in FIG. 4, each second half conduction detection circuit 16 includes a second voltage divider circuit 161, a second clamp protection circuit 162, and a second comparator 163; one end of the second voltage divider circuit 161 is connected to the corresponding second current source module 14, the other end of the second voltage divider circuit 161 is connected to one end of the second clamp protection circuit 162, the voltage divider of the second voltage divider circuit 161 is connected to the second adapter connector 12, and the second voltage divider circuit 161 includes a first resistor 1611 and a second resistor 163 connected in series. 12; the other end of the second clamping protection circuit 162 is connected to the input terminal Vin5 of the second comparator 163, and the second clamping protection circuit 162 is configured to limit the voltage of the input terminal Vin5 of the second comparator 163; the second comparator 163 is configured to compare the voltage of the input terminal Vin5 with the preset voltage Vref3 of the other input terminal Vin6 and then output a second comparison level to the processing module 19, so that the processing module 19 determines whether the half-conduction self-test is normal based on the second comparison level. The preset voltage Vref3 can be provided by setting additional hardware (for example, a fixed resistor voltage divider circuit or an adjustable resistor voltage divider circuit), or the preset voltage Vref3 can be provided by the processing module 19; the second comparator 163 is set to prevent the processing module 19 from making an erroneous judgment on the test result due to the voltage fluctuation of the input terminal Vin5; the second voltage divider circuit 161 is set to play a role of voltage reduction and current limiting, so as to prevent the circuit loop from forming a large current and causing the components in the circuit to fail.

Specifically, if the wire 23a/wire 23b is in a semi-conducting state, the wire 23a/wire 23b has an equivalent internal resistance, and the voltage at the voltage dividing point of the second voltage dividing circuit 161 will be lower; if the wire 23a/wire 23b is not in a semi-conducting state, the wire 23a/wire 23b does not have an equivalent internal resistance, and the voltage at the voltage dividing point of the second voltage dividing circuit 161 will be higher; therefore, the second transfer connection is connected through the voltage dividing point. By setting the second voltage divider circuit 161 of the comparator 12, the processing module 19 can determine whether the wire 23a/wire 23b is in a half-conduction state. When the voltage at the voltage divider of the second voltage divider circuit 161 is greater than the preset voltage Vref3 of the input terminal Vin6 of the second comparator 163 after the clamping protection of the second clamping protection circuit 162, it means that the wire 23a/wire 23b is not in a half-conduction state, and the half-conduction self-test is abnormal. For example, when the processing module 19 performs a semi-conduction self-test on the wire 23a, if the second comparison level is a high level (the voltage of the input terminal Vin5 is greater than the preset voltage Vref3 of the input terminal Vin6), the processing module 19 determines that the semi-conduction self-test is abnormal, otherwise it determines that the semi-conduction self-test is normal.

That is, the step (c) may include: judging whether the certain wire 23 is in a semi-conducting state by the electrical signal obtained by the second semi-conducting detection circuit 16 connected to the second adapter connector 12, if so, the semi-conducting self-test is normal, otherwise the semi-conducting self-test is abnormal.

It should be noted that the cable detection device 1 adopts a symmetrical design, and the structures and operating principles of the first half-conduction detection circuit 15 and the second half-conduction detection circuit 16 are similar. Therefore, the operation process of step (d) is similar to step (c), so it is not repeated. In addition, step (c) and step (d) are applicable to the half-conduction self-test of the cable 2 with a chip (for example: microcontroller unit) or metal oxide semiconductor field effect transistor installed in the first connector plug 21 and/or the second connector plug 22.

Please refer to FIG5, which is another block diagram of the cable detection device of the present application connected to the cable. As shown in FIG5, the cable detection device 1 may also include a swing machine 3, and the swing machine 3 is connected to the processing module 19; when the processing module 19 executes the steps (a), (b), (c) and (d), the swing machine 3 is used to swing the cable 2 at different angles.

In one example, please refer to FIG. 6, which is a block diagram of an embodiment of the swing machine of FIG. 5 connected to the processing module. As shown in FIG. 6, the swing machine 3 may be a manual swing machine, and the manual swing machine includes a plurality of positioning buttons 31, a foot pedal switch 32, a relay 33, an electromagnetic valve 34 and a cylinder 35 that are dispersedly arranged. The plurality of positioning buttons 31, the foot pedal switch 32 and the relay 33 are connected to the processing module 19; in this embodiment, the number of positioning buttons 31 may be but is not limited to eight. , and the configuration position of the positioning button 31 can be adjusted according to the actual measurement requirements; when the cable 2 to be tested is connected to the cable detection device 1, the user presses the foot pedal switch 32, so that the foot pedal switch 32 transmits a signal to the processing module 19, and the processing module 19 turns on the relay 33 to control the electromagnetic valve 34 to start the cylinder 35 to compress the cable 2; then, the user manually The cable 2 is held and swung (it can be rotated clockwise or counterclockwise), but the user needs to touch the plurality of positioning buttons 31 while swinging the cable 2 (i.e., the user presses the plurality of positioning buttons 31 to perform the swing positioning). At this time, the processing module 19 performs the test of the above steps (a) to (d); when the plurality of positioning buttons 31 are all pressed, the After the parts are touched, the processing module 19 obtains the test results of each wire of the cable 2 at different swing angles; then, the user presses the foot pedal switch 32 again, so that the foot pedal switch 32 transmits a signal to the processing module 19 again, and the processing module 19 turns off the relay to lift the cylinder 35; the user can remove the tested cable 2 to test the next cable 2. It should be noted that in order to avoid the drawing of FIG. 6 being too complicated, the connection lines between the positioning button 31, the foot pedal switch 32 and the relay 33 and the processing module 19 are omitted.

In another example, please refer to FIG. 7 , which is a block diagram of another embodiment of the swing machine connection processing module of FIG. 5 . As shown in FIG7 , the swing machine 3 may be an automatic swing machine, which includes a fixing device 36 and a motor 37, wherein the motor 37 is connected to the processing module 19; when the cable 2 is connected to the cable detection device 1, the fixing device 36 is configured to fix the cable 2; then, when the processing module 19 performs the test from step (a) to step (d) above, the motor 37 is controlled to start periodically rotating and swinging the cable 2 to obtain the test results of each wire of the cable 2 at different swing angles; then, the user can remove the tested cable 2 to test the next cable 2.

Please refer to FIG. 8 , which is a block diagram of another embodiment of the cable detection device connected to the cable of the present application. As shown in FIG8 , the cable detection device 1 may further include a voice playback module 5, a display module 6 and a light emitting module 7, which are connected to the processing module 19; the voice playback module 5 is configured to perform voice error reporting (for example, the voice playback module 5 reports that the through test of the wire 23a is abnormal); the display module 6 is configured to perform text error reporting (for example, the display module 6 displays that the through test of the wire 23a is abnormal), and to display the test results of each wire of the cable 2 (for example, the display module 6 displays the test results of each wire at different swinging angles); the light emitting module 7 is configured to use a specific light color to report an error (for example, the light emitting module 7 emits green light to represent that the overall test is normal, and the light emitting module 7 emits red light to represent that a certain test of the wire 23a is abnormal). In other embodiments, the cable detection device 1 may include any one or any two of the voice playing module 5, the display module 6 and the light emitting module 7.

Please refer to FIG9, which is a block diagram of another embodiment of the cable detection device of the present application connected to the cable. As shown in FIG9, the cable detection device 1 may also include a communication module 8, connected to the processing module 19, and configured to receive a test instruction from a host computer (not shown), so that the processing module 19 starts to execute the step (a) based on the test instruction; and transmits the test results of each wire of the cable 2 to the host computer. Among them, the communication module 8 can communicate with the host computer in a wired or wireless manner, so that the user can remotely control the cable detection device 1 to detect the cable 2. In one embodiment, the cable detection device 1 may further include a start button 9 connected to the processing module 19 and configured to generate a start signal after being pressed, so that the processing module 19 starts to execute the step (a) based on the start signal.

In one embodiment, when the processing module 19 reports an error, the cable detection device 1 stops testing the cable 2. In other words, when any test is abnormal, it means that the quality of the cable 2 is poor, and the cable detection device 1 does not need to perform subsequent tests on the cable 2, saving testing time.

Please refer to FIG. 10 , which is a flow chart of an embodiment of the cable detection method of the present application. As shown in FIG10 , a cable detection method 10 is applied to a cable detection device for detecting a cable, wherein the cable includes a first connector plug, a second connector plug, and a plurality of wires connecting the first connector plug and the second connector plug. The first connector plug of the cable is connected to a first adapter connector of the cable detection device, and the second connector plug of the cable is connected to a second adapter connector of the cable detection device. The cable detection device includes a first detection module, a second detection module, a first half-conduction detection circuit, and a second half-conduction detection circuit provided corresponding to each wire. The first detection module and the first half-conduction detection circuit are connected to the first adapter connector, and the second detection module and the second half-conduction detection circuit are connected to the second adapter connector.

The cable detection method 10 comprises: outputting a first test electrical signal from a first adapter connector to a certain wire, and sequentially performing a through test, an overvoltage and overcurrent protection test through a second detection module corresponding to the certain wire, and performing a short circuit test through a second detection module corresponding to other wires other than the certain wire (step 101); if the through test is abnormal, outputting a second test electrical signal from the second adapter connector to the The certain wire is subjected to another through-test, another overvoltage and overcurrent protection test, and another short-circuit test through the first detection module corresponding to the certain wire (step 102); if the other through-test is abnormal, the third test electrical signal is input to the second half conduction detection circuit corresponding to the certain wire, and based on the divided The method further comprises: performing a half-conduction self-test on the certain wire based on the voltage division principle (step 103); if the half-conduction self-test is abnormal, inputting a fourth test electrical signal into a first half-conduction detection circuit corresponding to the certain wire, and performing another half-conduction self-test on the certain wire based on the voltage division principle (step 104); if the overvoltage and overcurrent protection test, the short circuit test, another overvoltage and overcurrent protection test, another short circuit test or another half-conduction self-test is abnormal, the fourth test electrical signal is input into a first half-conduction detection circuit corresponding to the certain wire, and performing another half-conduction self-test on the certain wire based on the voltage division principle (step 104); if the overvoltage and overcurrent protection test, the short circuit test, another overvoltage and overcurrent protection test, another short circuit test or another half-conduction self-test is abnormal, the fourth test electrical signal is input into a first half-conduction detection circuit corresponding to the certain wire, and performing another half-conduction self-test on the certain wire based on the voltage division principle (step 105); If an abnormality occurs during the self-test, an error message is given (step 105); and if the through test, overvoltage and overcurrent protection test, and short circuit test are passed in sequence, another through test, another overvoltage and overcurrent protection test, and another short circuit test are passed in sequence, or the half-conduction self-test or the other half-conduction self-test is passed, the process returns to step 101 to test the next wire until the detection of each wire of the cable is completed (step 106). For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 above, which will not be elaborated here.

In one embodiment, each second detection module may include a second resistor voltage-dividing sampling circuit, a second short-circuit/open-circuit detection circuit, and a second overvoltage and overcurrent protection circuit, wherein the second resistor voltage-dividing sampling circuit includes a load resistor and a sampling resistor connected in series, one end of the load resistor is connected to the second adapter connector and the second short-circuit/open-circuit detection circuit, the other end of the load resistor is connected to one end of the sampling resistor, the other end of the sampling resistor is grounded, and the voltage division of the second resistor voltage-dividing sampling circuit is connected to the second overvoltage and overcurrent protection circuit; the step 101 may include: determining through the second short-circuit/open-circuit detection circuit whether the certain wire is connected to the second adapter connector; Whether one end of the connector has a feedback signal corresponding to the first test signal, if yes, the through test is normal, otherwise the through test is abnormal; through the second overvoltage and overcurrent protection circuit, whether one end of the wire connected to the second adapter connector has overvoltage and overcurrent, if yes, the overvoltage and overcurrent protection test is abnormal, otherwise the overvoltage and overcurrent protection test is normal; and through the second short circuit/open circuit detection circuit corresponding to other wires other than the one wire, whether one end of the other wire connected to the second adapter connector has a response signal, if yes, the short circuit test is abnormal, otherwise the short circuit test is normal. For detailed description, please refer to the relevant description of the embodiment of the above-mentioned cable detection device 1, which will not be elaborated here.

In one embodiment, the step 103 may include: judging whether the certain wire is half-conducted by obtaining an electrical signal through a second half-conductance detection circuit connected to one end of the certain wire connected to the second adapter connector, if so, the half-conductance self-test is normal, otherwise the half-conductance self-test is abnormal. For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 above, which will not be elaborated here.

In one embodiment, the cable detection device may include a swinging machine. When the cable detection device executes the step 101, the step 102, the step 103 and the step 104, the swinging machine may be used to swing the cable at different angles. For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 above, which will not be elaborated here.

In one embodiment, the error reporting in step 105 may include: reporting an error by voice through a voice playback module; reporting an error by text through a display module; and/or reporting an error by using a specific luminous color through a luminous module. For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 above, which will not be elaborated here.

Please refer to FIG. 11, which is a flowchart of another embodiment of the cable detection method of the present application. As shown in FIG. 11, before the step 101, it may also include: receiving a test command from a host computer or a start signal from a start button (step 101a) to start executing the step 101. It should be noted that in order to avoid the drawing of FIG. 11 being too complicated, the drawing of steps 102 to 106 is omitted. For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 mentioned above, which will not be elaborated here.

Please refer to FIG. 12, which is a flowchart of another embodiment of the cable detection method of the present application. As shown in FIG. 12, the cable detection method 10 may also include: when an error message is given, stopping the test on the cable (step 107). It should be noted that in order to avoid the drawing of FIG. 12 being too complicated, the drawing steps 101 to 104 and step 106 are omitted. For detailed description, please refer to the relevant description of the embodiment of the above-mentioned cable detection device 1, which will not be elaborated here.

In one embodiment, the cable detection method 10 may further include: transmitting the test results of each wire of the cable to a host computer or displaying them through a display module. For detailed description, please refer to the relevant description of the embodiment of the cable detection device 1 above, which will not be elaborated here.

In summary, the present application uses the symmetrical design of the cable detection device and the bidirectional detection design of the cable detection method to allow the cable to be inserted for detection in any direction regardless of a specific direction. In addition, the present application uses the configuration of the first detection module and the second detection module (i.e., the design of step 101 and step 102 of the cable detection method) to sequentially perform a through test (i.e., whether the wire is in a through state), an overvoltage and overcurrent protection test (i.e., whether overvoltage and overcurrent occur when the wire is through), and a short circuit test (i.e., whether a certain wire is short-circuited with other wires when it is through) on each wire included in the cable; and The first half-conduction detection circuit and the second half-conduction detection circuit are set (i.e., the design of step 103 and step 104 of the cable detection method), and each wire included in the cable is subjected to half-conduction detection (i.e., determining whether the wire is half-conducted); therefore, the cable detection method and the detection device can realize bidirectional automatic detection of the cable, reduce labor costs, enhance quality control, improve fool-proof measures, and promote industry development. In addition, the cable detection method and the detection device of the embodiment of the present application can be applied to the detection of the cable having a chip (e.g., a microcontroller unit) or a metal oxide semiconductor field effect transistor arranged in the first connector plug and/or the second connector plug.

Although the present invention is described using the above embodiments, it should be noted that these descriptions are not configured to limit the present invention. On the contrary, the present invention covers modifications and similar arrangements that are obvious to a person skilled in the art. Therefore, the scope of the patent application should be interpreted in the broadest way to include all obvious modifications and similar arrangements.

1: Cable detection device 2: Cable 3: Swing machine 5: Voice playback module 6: Display module 7: Light module 8: Communication module 9: Start button 10: Cable detection method 11: First adapter connector 12: Second adapter connector 13: First current source module 14: Second current source module 15: First half-conduction detection circuit 16: Second half-conduction detection circuit 17: First detection module 18: Second detection module 19: Processing module 21: First connector plug 22: Second connector plug 23a, 23b: Wire 31: Positioning button 32: Foot pedal switch 33: Relay 34: Solenoid valve 35: Cylinder 36: Fixing device 37: Motor 50: Third switch unit 101~107,101a: Step 131: First switch unit 132: First current source unit 141: Second switch unit 142: Second current source unit 161: Second voltage divider circuit 162: Second clamp protection circuit 163: Second comparator 181: Second resistor voltage divider sampling circuit 182: Second short circuit/open circuit detection circuit 183: Second overvoltage and overcurrent protection circuit 231: Microcontroller unit 232: Metal oxide semiconductor field effect transistor 1611: First resistor 1612: Second resistor 1811: Load resistor 1812: Sampling resistor 1821: Second sampling unit 1822: Third comparator 1831: Second amplifier 1832: Fourth comparator Vin1, Vin2, Vin3, Vin4, Vin5, Vin6: Input terminal Vref1, Vref2, Vref3: Default voltage

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 is a block diagram of an embodiment of the cable detection device of the present application connected to the cable; Figure 2 is a schematic diagram of a circuit structure of an embodiment of the cable of Figure 1; Figure 3 is a schematic diagram of a connection of an embodiment of the processing module, the second adapter connector, and the second detection module of Figure 1; Figure 4 is a schematic diagram of a connection of an embodiment of the processing module, the second current source module, the second adapter connector, and the second semi-conducting detection circuit of Figure 1; Figure 5 is a block diagram of another embodiment of the cable detection device of the present application connected to the cable; Figure 6 is a block diagram of an embodiment of the swing machine of Figure 5 connected to the processing module; Figure 7 is a block diagram of another embodiment of the swing machine of Figure 5 connected to the processing module; FIG8 is a block diagram of another embodiment of the cable detection device of the present application connected to the cable; FIG9 is a block diagram of another embodiment of the cable detection device of the present application connected to the cable; FIG10 is a flow chart of an embodiment of the cable detection method of the present application; FIG11 is a flow chart of another embodiment of the cable detection method of the present application; and FIG12 is a flow chart of another embodiment of the cable detection method of the present application.

10: Cable detection method

101~106: Steps

Claims (20)

A cable detection method is applied to a cable detection device for detecting a cable, wherein the cable includes a first connector plug, a second connector plug, and a plurality of wires connecting the first connector plug and the second connector plug. The first connector plug is connected to a first adapter connector of the cable detection device, and the second connector plug is connected to a second adapter connector of the cable detection device. The cable detection device includes a first detection module, a second detection module, a first half-conduction detection circuit and a second half-conduction detection circuit arranged corresponding to each wire. The first detection module and the first half-conduction detection circuit are connected to the first adapter connector, and the second detection module and the second half-conduction detection circuit are connected to the second adapter connector. The cable detection method includes the following steps: (A) Output a first test electrical signal from the first adapter connector to a certain wire, and sequentially perform a straight-through test, an overvoltage and overcurrent protection test through the second detection module corresponding to the certain wire, and a short-circuit test through the second detection module corresponding to other wires other than the certain wire; (B) If the straight-through test is abnormal, output a second test electrical signal from the second adapter connector to the certain wire, and sequentially perform another straight-through test, another overvoltage and overcurrent protection test through the first detection module corresponding to the certain wire, and another short-circuit test through the first detection module corresponding to other wires other than the certain wire; (C) If the other through-test is abnormal, a third test signal is input to the second half-conduction detection circuit corresponding to the certain wire, and a half-conduction self-test is performed on the certain wire based on a voltage division principle; (D) If the half-conduction self-test is abnormal, a fourth test signal is input to the first half-conduction detection circuit corresponding to the certain wire, and the other half-conduction self-test is performed on the certain wire based on the voltage division principle; (E) If the overvoltage and overcurrent protection test, the short circuit test, the other overvoltage and overcurrent protection test, the other short circuit test or the other half-conduction self-test is abnormal, an error message is given; and (F) If the through test, the overvoltage and overcurrent protection test, and the short circuit test are passed in sequence, the other through test, the other overvoltage and overcurrent protection test, and the other short circuit test are passed in sequence, the half-conduction self-test is passed, or the other half-conduction self-test is passed, then return to step (A) to test the next wire until the detection of each wire of the cable is completed. The cable detection method as described in claim 1, wherein each of the second detection modules includes a second resistor voltage-dividing sampling circuit, a second short-circuit/open-circuit detection circuit and a second overvoltage and overcurrent protection circuit, wherein the second resistor voltage-dividing sampling circuit includes a load resistor and a sampling resistor connected in series, one end of the load resistor is connected to the second adapter connector and the second short-circuit/open-circuit detection circuit, the other end of the load resistor is connected to one end of the sampling resistor, the other end of the sampling resistor is grounded, and a voltage-dividing point of the second resistor voltage-dividing sampling circuit is connected to the second overvoltage and overcurrent protection circuit; the step (A) includes: Through the second short circuit/open circuit detection circuit, it is determined whether one end of the certain wire connected to the second adapter connector has a feedback signal corresponding to the first test signal. If yes, the through test is normal, otherwise the through test is abnormal; Through the second overvoltage and overcurrent protection circuit, it is determined whether one end of the certain wire connected to the second adapter connector has overvoltage and overcurrent. If yes, the overvoltage and overcurrent protection test is abnormal, otherwise the overvoltage and overcurrent protection test is normal; and Through the second short circuit/open circuit detection circuit corresponding to other wires other than the certain wire, it is determined whether one end of the other wire connected to the second adapter connector has a response signal. If yes, the short circuit test is abnormal, otherwise the short circuit test is normal. The cable detection method as described in claim 1, wherein the step (C) includes: determining whether the certain wire is half-conducted by obtaining an electrical signal from the second half-conductance detection circuit connected to one end of the certain wire connected to the second adapter connector, and if so, the half-conductance self-test is normal, otherwise the half-conductance self-test is abnormal. The cable detection method as described in claim 1, wherein the cable detection device includes a swing machine, and when the cable detection device executes the step (A), the step (B), the step (C) and the step (D), the swing machine is used to swing the cable at different angles. The cable detection method as described in claim 1, wherein before step (A), it further includes: Receiving a test command from a host computer or a start signal from a start button to start executing step (A). The cable detection method as described in claim 1, wherein the error reporting in step (E) includes: a voice error reporting through a voice playback module; a text error reporting through a display module; and/or an error reporting through a light emitting module using a specific light emitting color. The cable detection method as described in claim 1, further comprising: When the error message is given, stopping the test on the cable. The cable detection method as described in claim 1, further comprising: Transmitting a test result of each conductor of the cable to a host computer or displaying it through a display module. A cable detection device, comprising: A first adapter connector, configured to connect a first connector plug of a cable, wherein the cable includes N wires, and N is a positive integer greater than 1; A second adapter connector, configured to connect a second connector plug of the cable; N first current source modules, connected to the first adapter connector and configured to correspond to the N wires; N second current source modules, connected to the second adapter connector and configured to correspond to the N wires; N first half-conduction detection circuits, connected to the first adapter connector and configured to correspond to the N wires; N second half-conduction detection circuits, connected to the second adapter connector and configured to correspond to the N wires; N first detection modules, connecting the first adapter connector and the corresponding N wires; N second detection modules, connecting the second adapter connector and the corresponding N wires; and A processing module, connecting the N first current source modules, the N second current source modules, the N first half-conduction detection circuits, the N second half-conduction detection circuits, the N first detection modules and the N second detection modules, the processing module is configured to perform the following steps: (a) controlling a first current source module corresponding to a certain wire to output a first test electrical signal to the certain wire, and sequentially performing a straight-through test, an overvoltage and overcurrent protection test through a second detection module corresponding to the certain wire, and a short circuit test through a second detection module corresponding to other wires other than the certain wire; (b) If the through test is abnormal, control a second current source module corresponding to the certain wire to output a second test signal to the certain wire, and sequentially perform another through test, another overvoltage and overcurrent protection test through a first detection module corresponding to the certain wire, and another short circuit test through a first detection module corresponding to other wires other than the certain wire; (c) If the other through test is abnormal, control the second current source module corresponding to the certain wire to output a third test signal to a second half-conduction detection circuit corresponding to the certain wire, and perform a half-conduction self-test on the certain wire based on a voltage division principle; (d) If the half-conduction self-test is abnormal, control the first current source module corresponding to the certain wire to output a fourth test signal to a first half-conduction detection circuit corresponding to the certain wire, and perform the other half-conduction self-test on the certain wire based on the voltage division principle; (e) If the overvoltage and overcurrent protection test, the short circuit test, the other overvoltage and overcurrent protection test, the other short circuit test or the other half-conduction self-test is abnormal, issue an error prompt; and (f) If the through test, the overvoltage and overcurrent protection test and the short circuit test are passed in sequence, the other through test, the other overvoltage and overcurrent protection test and the other short circuit test are passed in sequence, or the half-conduction self-test or the other half-conduction self-test is passed, then return to step (a) to test the next wire until the detection of each wire of the cable is completed. A cable detection device as described in claim 9, wherein each of the N first current source modules includes a first switch unit and a first current source unit, the first switch unit is connected to the first current source unit, the first adapter connector and the processing module, and the first current source unit is connected to the processing module; the processing module controls an on/off state of the first switch unit and controls the first test electrical signal or the fourth test electrical signal output by the first current source unit, so that the first current source module outputs the first test electrical signal or the fourth test electrical signal. The cable detection device as described in claim 9, wherein each of the N second half conduction detection circuits comprises a second voltage divider circuit, a second clamp protection circuit and a second comparator; one end of the second voltage divider circuit is connected to a corresponding second current source module, the other end of the second voltage divider circuit is connected to one end of the second clamp protection circuit, and one voltage divider of the second voltage divider circuit is connected to the a second adapter connector; the other end of the second clamping protection circuit is connected to an input end of the second comparator, and the second clamping protection circuit is configured to limit a voltage of the input end; the second comparator is configured to compare the voltage of the input end with a preset voltage of another input end and then output a second comparison level to the processing module, so that the processing module determines whether the semi-conduction self-test is normal based on the second comparison level. The cable detection device as described in claim 9, wherein each of the N second detection modules includes a second resistor voltage-dividing sampling circuit, a second short-circuit/open-circuit detection circuit, and a second overvoltage and overcurrent protection circuit, wherein the second resistor voltage-dividing sampling circuit includes a load resistor and a sampling resistor connected in series, and one end of the load resistor is connected to the second adapter connector and the second sampling resistor. One end of the second short circuit/open circuit detection circuit, the other end of the load resistor is connected to one end of the sampling resistor, the other end of the sampling resistor is grounded, a voltage dividing point of the second resistor voltage dividing sampling circuit is connected to one end of the second overvoltage and overcurrent protection circuit, and the other end of the second short circuit/open circuit detection circuit and the other end of the second overvoltage and overcurrent protection circuit are connected to the processing module; step (a) includes: Through the second short circuit/open circuit detection circuit, it is determined whether one end of the certain wire connected to the second adapter connector has a feedback signal corresponding to the first test signal. If yes, the through test is normal, otherwise the through test is abnormal; Through the second overvoltage and overcurrent protection circuit, it is determined whether one end of the certain wire connected to the second adapter connector has overvoltage and overcurrent. If yes, the overvoltage and overcurrent protection test is abnormal, otherwise the overvoltage and overcurrent protection test is normal; and Through the second short circuit/open circuit detection circuit corresponding to other wires other than the certain wire, it is determined whether one end of the other wire connected to the second adapter connector has a response signal. If yes, the short circuit test is abnormal, otherwise the short circuit test is normal. A cable detection device as described in claim 12, wherein each of the second short circuit/open circuit detection circuits includes a second sampling unit and a third comparator, one end of the second sampling unit is connected to one end of the load resistor, and the other end of the second sampling unit is connected to an input end of the third comparator; the third comparator is configured to compare a voltage at the input end with a preset voltage at the other input end and then output a third comparison level to the processing module, so that the processing module determines whether the through test or the other short circuit test of the corresponding wire is normal based on the third comparison level. A cable detection device as described in claim 12, wherein each of the second overvoltage and overcurrent protection circuits includes a second amplifier and a fourth comparator, one end of the second amplifier is connected to the voltage divider of the second resistor divider sampling circuit, and the other end of the second amplifier is connected to an input end of the fourth comparator; the fourth comparator is configured to compare a voltage at the input end with a preset voltage at the other input end and then output a fourth comparison level to the processing module, so that the processing module determines whether the overvoltage and overcurrent protection test of the corresponding wire is normal based on the fourth comparison level. The cable detection device as described in claim 9, wherein the step (c) includes: determining whether the certain wire is in a half-conduction state by obtaining an electrical signal from the second half-conduction detection circuit connected to the second adapter connector; if so, the half-conduction self-test is normal; otherwise, the half-conduction self-test is abnormal. The cable detection device as described in claim 9 further includes a swing machine connected to the processing module; when the processing module executes the step (a), the step (b), the step (c) and the step (d), the swing machine is used to swing the cable at different angles. The cable detection device as described in claim 9 further includes a communication module connected to the processing module and configured to receive a test instruction from a host computer so that the processing module starts executing the step (a) based on the test instruction; and transmits a test result of each conductor of the cable to the host computer. The cable detection device as described in claim 9 further includes a start button connected to the processing module and configured to generate a start signal after being pressed so that the processing module starts to execute the step (a) based on the start signal. The cable detection device as described in claim 9 further includes a voice playback module, a display module and/or a light emitting module, which are connected to the processing module; the voice playback module is configured to perform a voice error report; the display module is configured to perform a text error report and display a test result of each conductor of the cable; the light emitting module is configured to perform an error report using a specific light emitting color. The cable detection device as described in claim 9, wherein when the processing module issues the error message, the cable detection device stops testing the cable.

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