Wire harness detection device and system

Abstract

The utility model discloses a wire harness detection device and system. The wire harness detection device comprises a control module and an interface module, the control module comprises a first port group and a second port group, the interface module comprises a first interface group and a second interface group, the first port group is connected with one end of the first interface group, the other end of the first interface group is connected with one end of a wire harness to be detected, and the second port group is connected with the other end of the wire harness to be detected. The first port group is connected with one end of the first interface group, the second port group is connected with one end of the second interface group, the other end of the second interface group is connected with the other end of the to-be-detected wire harness, the first port group is used for transmitting a detection signal to the interface module, and the second port group is used for receiving a return signal returned after the detection signal passes through the to-be-detected wire harness; and determining a detection result of the wire harness to be detected according to the signal states of the first signal and the second signal in the return signals. According to the invention, the technical problem that related circuits are burnt out when the misconnected wires are connected with the terminals due to the fact that the positions where the wires are wrongly connected in the wire harness are difficult to check in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of wire harness detection, and in particular, to a wire harness detection device and system. Background Art

[0002] The wiring harness is a collection of multiple wires. The wires inside the product need to be sorted according to their functions. Wires of different colors need to be inserted into their corresponding holes or connected to the corresponding terminals in a certain order. Wrong connection or missing connection will burn the relevant circuits. Because the wires are wrapped inside, they cannot be seen by the naked eye and it is difficult to find the wrong connection. At present, many inverters have been damaged due to the wrong wiring sequence of the product's internal wiring harness.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Utility Model Content

[0004] The embodiments of the present application provide a wiring harness detection device and system to at least solve the technical problem in the related art that it is difficult to detect the incorrect connection sequence of wires in the wiring harness, so that the related circuits will be burned when the wrongly connected wires are connected to the terminals.

[0005] According to one aspect of an embodiment of the present application, a wiring harness detection device is provided, comprising: a control module and an interface module, wherein the control module comprises a first port group and a second port group, the interface module comprises a first interface group and a second interface group, the first port group is connected to one end of the first interface group, the other end of the first interface group is connected to one end of the wiring harness to be tested, the second port group is connected to one end of the second interface group, the other end of the second interface group is connected to the other end of the wiring harness to be tested, wherein the first port group is used to transmit a detection signal to the interface module, and the second port group is used to receive a return signal returned after the detection signal passes through the wiring harness to be tested, and the detection result of the wiring harness to be tested is determined by the signal states of the first signal and the second signal in the return signal.

[0006] Optionally, the wiring harness detection device also includes a serial port chip, the control module is connected to the serial port chip, and the control module is used to receive a first level signal output by the serial port chip, wherein the first level signal is a serial port signal supported by the control module that converts the detection signal.

[0007] Optionally, the serial port chip further includes a first display circuit and a second display circuit, the first display circuit and the second display circuit are respectively connected to the control module, wherein the first display circuit and the second display circuit are used to display the data transmission status of the serial port chip.

[0008] Optionally, the serial port chip further includes a first crystal oscillator, two ends of the first crystal oscillator are respectively connected to the positive electrodes of the first capacitor and the second capacitor, and the negative electrodes of the first capacitor and the second capacitor are grounded, wherein the first crystal oscillator is used to provide a standard clock signal for the serial port chip.

[0009] Optionally, the wiring harness detection device further includes an interface chip, which is connected to the serial port chip, and the interface chip is connected to the host computer, and is used for converting the second level signal output by the host computer into a first level signal and then transmitting it to the serial port chip.

[0010] Optionally, the control module includes a second crystal oscillator, which is used to provide a standard clock signal for the control module. Two ends of the second crystal oscillator are respectively connected to a third capacitor and a fourth capacitor, and the third capacitor and the fourth capacitor are grounded.

[0011] Optionally, the wiring harness detection device further includes a reset button, the control module is connected to one end of the reset button, the other end of the reset button is connected to a voltage source, and both ends of the reset button are connected in parallel to a fifth capacitor.

[0012] Optionally, the wiring harness detection device also includes a reminder module, the reminder module includes a first display light, one end of the first display light is connected to the voltage source, the other end of the first display light is connected to the control module, wherein the first display light is on when the first signal is a high level signal and the second signal is a low level signal; the reminder module also includes a second display light, one end of the second display light is connected to the voltage source, the other end of the second display light is connected to the control module, wherein the second display light is on when the first signal is a low level signal and the second signal is a high level signal.

[0013] Optionally, the reminder module further includes a buzzer, one end of the buzzer is connected to the voltage source, and the other end of the buzzer is connected to the control module.

[0014] According to another aspect of an embodiment of the present application, a wire harness detection system is also provided, including: a host computer and the above-mentioned wire harness detection device, the host computer is connected to a control module in the wire harness detection device through an interface chip and a serial port chip in the wire harness detection device, wherein the interface chip is used to convert a second level signal transmitted by the host computer into a first level signal and then transmit it to the control module through the serial port chip.

[0015] In an embodiment of the present application, a wiring harness detection device is used to detect the internal connection of the wiring harness to be tested, through a control module and an interface module, wherein the control module includes a first port group and a second port group, and the interface module includes a first interface group and a second interface group, the first port group is connected to one end of the first interface group, and the other end of the first interface group is connected to one end of the wiring harness to be tested, the second port group is connected to one end of the second interface group, and the other end of the second interface group is connected to the other end of the wiring harness to be tested, wherein the first port group is used to transmit a detection signal to the interface module, and the second port group is used to receive a return signal returned after the detection signal passes through the wiring harness to be tested, The return signal includes a first signal and a second signal. The detection result of the wiring harness to be tested is determined by the signal states of the first signal and the second signal. When the first signal is a high-level signal and the second signal is a low-level signal, it indicates that the line sequence detection of the wiring harness to be tested has failed. When the first signal is a low-level signal and the second signal is a high-level signal, it indicates that the line sequence detection of the wiring harness to be tested has passed. This achieves the purpose of detecting whether the internal connection of the wiring harness is incorrect, thereby achieving the technical effect of reducing circuit damage, and further solves the technical problem in the related technology that it is difficult to troubleshoot the incorrect connection sequence of the wires in the wiring harness, thereby burning the related circuits when the wrongly connected wires are connected to the terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 is a structural diagram of a wire harness detection device according to an embodiment of the present application;

[0018] Figure 2 is a circuit diagram of a control module according to an embodiment of the present application;

[0019] Figure 3 is a circuit diagram of an interface chip according to an embodiment of the present application;

[0020] Figure 4 is a circuit diagram of a serial port chip according to an embodiment of the present application;

[0021] Figure 5 is a circuit diagram of a reminder module according to an embodiment of the present application;

[0022] Figure 6 is a circuit diagram of a reset button according to an embodiment of the present application;

[0023] Figure 7 is a circuit diagram of an interface module according to an embodiment of the present application;

[0024] Figure 8 It is a structural diagram of a wire harness detection system according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] Figure 1 is a structural diagram of a wire harness detection device according to an embodiment of the present application, such as Figure 1 As shown, the wiring harness detection device 10 includes: a control module 11 and an interface module 12, wherein the control module includes a first port group and a second port group, the interface module includes a first interface group and a second interface group, the first port group is connected to one end of the first interface group, and the other end of the first interface group is connected to one end of the wiring harness to be tested, the second port group is connected to one end of the second interface group, and the other end of the second interface group is connected to the other end of the wiring harness to be tested, wherein the first port group is used to transmit the detection signal to the interface module, and the second port group is used to receive a return signal returned after the detection signal passes through the wiring harness to be tested, the return signal includes a first signal and a second signal, and the detection result of the wiring harness to be tested is determined by the signal states of the first signal and the second signal.

[0028] The following combination Figures 2 to 7 The above-mentioned wire harness detection device is described in detail, wherein: Figure 2 is a circuit diagram of a control module according to an embodiment of the present application. In an optional embodiment, the control module may be a control chip. Figure 3 is a circuit diagram of an interface chip according to an embodiment of the present application; Figure 4is a circuit diagram of a serial port chip according to an embodiment of the present application; Figure 5 is a circuit diagram of a reminder module according to an embodiment of the present application; Figure 6 is a circuit diagram of a reset button according to an embodiment of the present application; Figure 7 is a circuit diagram of an interface module according to an embodiment of the present application.

[0029] In the embodiment of the present application, the interface module includes several interface pairs for connecting the two ends of the wiring harness to be tested. The terminals at both ends of the wiring harness to be tested are respectively inserted into the interface pairs of the interface module. The interface pair consists of two one-to-one corresponding interfaces. By setting different interfaces, it can be applicable to different types of wiring harnesses. Figure 7 As shown, P8 and P7 are an interface pair, P10 and P9 are an interface pair, P12 and P11 are an interface pair, P14 and P13 are an interface pair, P16 and P15 are an interface pair, P18 and P17 are an interface pair, and P20 and P19 are an interface pair. The pins of P7, P9, P11, P13, P15, P17, and P19 are connected to the Figure 2 The ports P1.0-1.7 (i.e., the first port group) of the control module are connected to receive the test signal of the control module. It should be noted that, according to the test requirements, an interface that meets the number of wiring harnesses to be tested can be selected from P7, P9, P11, P13, P15, P17, and P19, for example, P7. The pins of P8, P10, P12, P14, P16, P18, and P20 are connected to Figure 2 The ports P2.0-2.7 (i.e., the second port group) of the control module are connected to output test signals to the control module. It should be noted that after determining the interface connected to the first port group, the port connected to the second port group can be directly determined. For example, when the first port group is connected to P7 (i.e., the first interface group), the port connected to the second port group is P8 (i.e., the second interface group). Figure 7 As can be seen from the above analysis, in the above wiring harness detection device, the number of interfaces in the first interface group is the same as the number of interfaces in the second interface group.

[0030] exist Figure 7 In the present invention, since different interface pairs have different numbers of interfaces, by setting different interface pairs, it can be applicable to different types of line sequence tests or wire harness tests, thereby expanding the application scope of the wire harness detection device.

[0031] In the above-mentioned harness detection device, the high and low level signals output by the internal program of the control module through the first port group P1.0-P1.7 are returned to the second port group P2.0-P2.7 of the control module through the interface pair in the interface module and plugged into the harness terminal to be tested, that is, the control module receives the detection signal and returns the return signal after passing through the harness to be tested. The return signal includes a first signal and a second signal. The detection result of the harness to be tested is determined by the signal states of the first signal and the second signal. When the first signal is a high level signal and the second signal is a low level signal, it indicates that the line sequence detection of the harness to be tested fails. When the first signal is a low level signal and the second signal is a high level signal, it indicates that the line sequence detection of the harness to be tested passes, thereby realizing the detection of the internal connection of the harness to be tested, and achieving the purpose of detecting whether the internal connection of the harness is wrong, thereby achieving the technical effect of reducing circuit damage, and further solving the technical problem that it is difficult to troubleshoot the wrong connection of the wire sequence in the harness in the related technology, so that the related circuit will be burned when the wrongly connected wire is connected to the terminal. The connection structure of the above-mentioned harness detection device is described in detail below.

[0032] In the above-mentioned wire harness detection device, the wire harness detection device also includes a serial port chip, the control module is connected to the serial port chip, and the control module is used to receive a first level signal output by the serial port chip, wherein the first level signal is a serial port signal supported by the control module that converts the detection signal.

[0033] In the embodiments of the present application, Figure 2 As shown, the control module can be a STC89C52 single-chip microcomputer, which is a low-power, high-performance CMOS 8-bit microcontroller with 8K in-system programmable Flash memory. The control module is connected to the serial port chip, specifically, combined with Figure 2 and Figure 4 The connection relationship between the control module and the serial port chip is described. Pins 5 and 7 of the control module are connected to pins 3 and 2 of the serial port chip respectively, and the control module is used to receive the TTL level signal (i.e., the first level signal) converted by the serial port chip from the USB level of the host computer (i.e., the second level signal described below).

[0034] In the above-mentioned harness detection device, the serial port chip further includes a first display circuit and a second display circuit, the first display circuit and the second display circuit are respectively connected to the control module, wherein the first display circuit and the second display circuit are used to display the data transmission status of the serial port chip.

[0035] In the above-mentioned wiring harness detection device, the serial port chip also includes a first crystal oscillator, the two ends of the first crystal oscillator are respectively connected to the positive electrodes of the first capacitor and the second capacitor, and the negative electrodes of the first capacitor and the second capacitor are grounded, wherein the first crystal oscillator is used to provide a standard clock signal for the serial port chip.

[0036] The following combination Figure 4 The circuit diagram of the serial port chip in the embodiment of the present application is used to explain the serial port chip. In the embodiment of the present application, pin 1, pin 4 and pin 16 of the serial port chip are connected to the ground module, the 3.3V voltage source and the voltage source VCC respectively; the pin 2 of the serial port chip is connected in series with the diode D2, the light emitting diode TX and the resistor R2 to the voltage source VCC (i.e., the first display circuit mentioned above), and the Figure 4 It can be seen that P3.1 is connected between TX and D2 in the first display line (i.e. Figure 2 Pin 7 of the control module in the middle); Pin 3 of the serial port chip is connected in series with the light-emitting diode RX and the resistor R1 to the voltage source VCC (i.e. the above-mentioned second display circuit), Figure 4 It can be seen that the 3rd pin of the serial port chip in the second display circuit is connected to P3.0 (i.e. Figure 2 The voltage source VCC is also connected in series with the resistor R3 and the light-emitting diode D4 to the ground.

[0037] The data transmission status of the serial port chip is displayed by setting the light-emitting diodes TX and RX. Specifically, the on and off of TX and RX are changed by the high and low communication data. Pins 7-8 of the serial port chip are respectively connected to the two ends of the crystal oscillator Y1 (i.e., the first crystal oscillator mentioned above). The two ends of the crystal oscillator Y1 are also respectively connected to a grounded capacitor C1 and C2 (the first capacitor and the second capacitor mentioned above). The crystal oscillator Y1 is used to provide a standard clock signal to the serial port chip.

[0038] In the above-mentioned wire harness detection device, the wire harness detection device also includes an interface chip, which is connected to the serial port chip, and the interface chip is connected to the host computer, and is used to convert the second level signal output by the host computer into a first level signal and transmit it to the serial port chip.

[0039] In the embodiment of the present application, in order to exchange data with the host computer, the embodiment of the present application is implemented by setting a USB module, through which the host computer can write a test program into the control module, which is convenient for program update. Specifically, the USB module in the embodiment of the present application includes an interface chip and a serial port chip; the model of the serial port chip can be, for example, CH340, which is a USB to serial port chip used to realize the conversion of USB to TTL serial port, thereby realizing the communication between USB and TTL serial port devices.

[0040] The following combination Figure 3 Circuit diagram of the interface chip in Figure 4 The circuit diagram of the serial port chip in the figure explains the interface chip. The interface chip converts the USB data sent by the host computer into serial port data through the serial port chip and transmits it to the control module. Pin 1 of the interface chip is connected to the voltage source VCC; pins 2-3 of the interface chip are respectively connected to pins 5-6 of the serial port chip; and pin 4 of the interface chip is grounded.

[0041] In the above-mentioned harness detection device, the control module includes a second crystal oscillator, which is used to provide a standard clock signal for the control module. Two ends of the second crystal oscillator are respectively connected to a third capacitor and a fourth capacitor, and the third capacitor and the fourth capacitor are grounded.

[0042] In the embodiment of the present application, according to Figure 2 In the circuit, pins 14-15 of the control module are respectively connected to the two ends of the crystal oscillator Y2 (i.e., the second crystal oscillator mentioned above), and the two ends of the crystal oscillator Y2 are also respectively connected to grounded capacitors C7 and C8 (i.e., the third capacitor and the fourth capacitor mentioned above); by setting the crystal oscillator Y2, a standard clock signal can be provided for the control module.

[0043] In the above-mentioned wire harness detection device, the wire harness detection device also includes a reset button, the control module is connected to one end of the reset button, the other end of the reset button is connected to the voltage source, and both ends of the reset button are connected in parallel with the fifth capacitor.

[0044] In the embodiments of the present application, Figure 6 and Figure 2 Explain the reset button. Figure 6 In the embodiment, the 4th pin of the control module is connected to the REST network of the reset circuit of the single-chip microcomputer; the other end of the reset button is connected to the voltage source VCC, and both ends of the reset button are connected in parallel with the capacitor C6. After the reset button is connected in parallel with the capacitor, a resistor R4 is connected in series to the ground.

[0045] In the above-mentioned wiring harness detection device, the wiring harness detection device also includes a reminder module, which includes a first display light, one end of the first display light is connected to the voltage source, and the other end of the first display light is connected to the control module, wherein the first display light lights up when the first signal is a high-level signal and the second signal is a low-level signal.

[0046] In the above-mentioned wiring harness detection device, the reminder module also includes a second display light, one end of the second display light is connected to the voltage source, and the other end of the second display light is connected to the control module, wherein the second display light lights up when the first signal is a low level signal and the second signal is a high level signal.

[0047] In the above-mentioned wire harness detection device, the reminder module further includes a buzzer, one end of the buzzer is connected to the voltage source, and the other end of the buzzer is connected to the control module.

[0048] In the embodiment of the present application, the control module detects and determines the signals received by the second port group P2.0-P2.7, and controls the operation of the reminder module according to the determination result to display the line sequence detection result. Figure 5 and Figure 2 Explain the reminder module.

[0049] exist Figure 5In the example, the reminder module includes a buzzer LS1, a red display light LED2_R (i.e., the first display light mentioned above) and a green display light LED1_G (i.e., the second display light mentioned above); the control module outputs a control signal to control the switch operation of the buzzer LS1, the red display light LED2_R and the green display light LED1_G. Specifically, when the line sequence detection passes, the control module controls ports P3.3 and P3.4 to output a low level, and port P3.2 to output a high level, so that the green display light LED1_G lights up, and the buzzer starts to buzz; when the line sequence detection fails, the control module controls ports P3.3 and P3.4 to output a high level, and port P3.2 to output a low level, so that the red display light LED2_R lights up. It should be noted that the signals output by control ports P3.3 and P3.4 are the first signals mentioned above, and the signal output by port P3.2 is the second signal mentioned above.

[0050] exist Figure 5 In the circuit diagram of the reminder module shown, one end of the red display light LED2_R is connected in series with a resistor R6 to a voltage source VCC, and the other end of the red display light LED2_R is connected to pin 8 of the control module (P3.2 in the figure); one end of the green display light LED1_G is connected in series with a resistor R5 to a voltage source VCC, and the other end of the green display light LED1_G is connected to pin 9 of the control module (P3.3 in the figure); one end of the buzzer LS1 is connected to the connection point between the resistor R5 and the green display light LED1_G, and the other end of the buzzer LS1 is connected to pin 10 of the control module (P3.4 in the figure).

[0051] The working principle of the wire harness detection device provided in the embodiment of the present application is as follows:

[0052] Insert the two ends of the wiring harness to be tested into the corresponding first interface group and second interface group respectively. The control module outputs a high-level test signal through port P1.0-P1.7. The high-level test signal output by the control module returns to port P2.0-P2.7 after passing through the wiring harness to be tested; the control module determines whether the line sequence detection is passed by detecting the returned test signal.

[0053] If ports P2.0-P2.7 of the control module receive the same high-level test signal, it means that the line sequence test has passed. When the line sequence detection passes, the control module controls ports P3.3 and P3.4 to output a low level, and port P3.2 outputs a high level, so that the green display light LED1_G lights up and the buzzer starts to buzz; if ports P2.0-P2.7 of the control module do not receive the same high-level test signal, it means that when the line sequence detection fails, the control module controls ports P3.3 and P3.4 to output a high level, and port P3.2 outputs a low level, so that the red display light LED2_R lights up.

[0054] The wiring harness detection device provided by the embodiment of the present application has the following effects: 1. By setting the control module P1 port to output a test signal, the test signal is returned to the P2 port after passing through the interface module and the wiring harness to be tested to perform a line sequence detection, and the reminder module is controlled by the output control signal to display the detection result, thereby realizing the automatic detection of the wiring harness line sequence; and by setting multiple interface pairs, different wiring harnesses can be tested for line sequence, thereby improving the versatility of the device; 2. By setting a USB module to connect to the host computer, the host computer can write the test software into the control module through the USB module; 3. The wiring harness line sequence detection function is realized, the product reliability is improved, and product damage caused by line sequence errors is completely avoided.

[0055] Figure 8 is a structural diagram of a wire harness detection system according to an embodiment of the present application, such as Figure 8 As shown, the wiring harness detection system 80 includes: a host computer 82 and the above-mentioned wiring harness detection device 10, the host computer is connected to the control module in the wiring harness detection device through the interface chip and the serial port chip in the wiring harness detection device, wherein the interface chip is used to convert the second level signal transmitted by the host computer into a first level signal and then transmit it to the control module through the serial port chip.

[0056] In the above-mentioned wire harness detection system, the wire harness detection device also includes a serial port chip, the control module is connected to the serial port chip, and the control module is used to receive a first level signal output by the serial port chip, wherein the first level signal is a serial port signal supported by the control module that converts the detection signal.

[0057] In the above-mentioned harness detection system, the serial port chip further includes a first display circuit and a second display circuit, the first display circuit and the second display circuit are respectively connected to the control module, wherein the first display circuit and the second display circuit are used to display the data transmission status of the serial port chip.

[0058] In the above-mentioned wiring harness detection system, the serial port chip also includes a first crystal oscillator, the two ends of the first crystal oscillator are respectively connected to the positive electrodes of the first capacitor and the second capacitor, and the negative electrodes of the first capacitor and the second capacitor are grounded, wherein the first crystal oscillator is used to provide a standard clock signal for the serial port chip.

[0059] In the above-mentioned wire harness detection system, the wire harness detection device also includes an interface chip, which is connected to the serial port chip, and the interface chip is connected to the host computer, and is used to convert the second level signal output by the host computer into a first level signal and transmit it to the serial port chip.

[0060] In the above harness detection system, the control module includes a second crystal oscillator, which is used to provide a standard clock signal for the control module. Two ends of the second crystal oscillator are respectively connected to a third capacitor and a fourth capacitor, which are grounded.

[0061] In the above-mentioned wire harness detection system, the wire harness detection device also includes a reset button, the control module is connected to one end of the reset button, the other end of the reset button is connected to the voltage source, and both ends of the reset button are connected in parallel with the fifth capacitor.

[0062] In the above-mentioned wire harness detection system, the number of interfaces in the first interface group is the same as the number of interfaces in the second interface group.

[0063] In the above-mentioned wiring harness detection system, the wiring harness detection device also includes a reminder module, which includes a first display light. One end of the first display light is connected to the voltage source, and the other end of the first display light is connected to the control module, wherein the first display light lights up when the first signal is a high-level signal and the second signal is a low-level signal.

[0064] In the above-mentioned wiring harness detection system, the reminder module also includes a second display light, one end of the second display light is connected to the voltage source, and the other end of the second display light is connected to the control module, wherein the second display light lights up when the first signal is a low level signal and the second signal is a high level signal.

[0065] In the above-mentioned wire harness detection system, the reminder module further includes a buzzer, one end of the buzzer is connected to the voltage source, and the other end of the buzzer is connected to the control module.

[0066] It should be noted that the wire harness detection device included in the above-mentioned wire harness detection system is Figure 1 The wiring harness detection device is the same as that in the present invention, so the relevant explanations and instructions in the above wiring harness detection device are also applicable to the wiring harness detection system and will not be repeated here.

[0067] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0068] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0069] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0070] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A wire harness detection device, characterized in that: include: control module and interface module, wherein, The control module includes a first port group and a second port group, and the interface module includes a first interface group and a second interface group, the first port group is connected to one end of the first interface group, and the other end of the first interface group is connected to one end of the wiring harness to be tested, the second port group is connected to one end of the second interface group, and the other end of the second interface group is connected to the other end of the wiring harness to be tested, wherein the first port group is used to transmit a detection signal to the interface module, and the second port group is used to receive a return signal returned after the detection signal passes through the wiring harness to be tested, and the detection result of the wiring harness to be tested is determined by the signal states of the first signal and the second signal in the return signal.

2. The wire harness detection device according to claim 1, characterized in that: The wiring harness detection device also includes a serial port chip, the control module is connected to the serial port chip, and the control module is used to receive a first level signal output by the serial port chip, wherein the first level signal is a serial port signal supported by the control module that is converted from the detection signal.

3. The wire harness detection device according to claim 2, characterized in that: The serial port chip further includes a first display circuit and a second display circuit, wherein the first display circuit and the second display circuit are respectively connected to the control module, wherein the first display circuit and the second display circuit are used to display the data transmission status of the serial port chip.

4. The wire harness detection device according to claim 2, characterized in that: The serial port chip also includes a first crystal oscillator, two ends of the first crystal oscillator are respectively connected to the positive electrodes of the first capacitor and the second capacitor, and the negative electrodes of the first capacitor and the second capacitor are grounded, wherein the first crystal oscillator is used to provide a standard clock signal for the serial port chip.

5. The wire harness detection device according to claim 2, characterized in that: The wire harness detection device further includes an interface chip, which is connected to the serial port chip and connected to a host computer, and is used for converting a second level signal output by the host computer into the first level signal and then transmitting the signal to the serial port chip.

6. The wire harness detection device according to claim 1, characterized in that: The control module comprises a second crystal oscillator, the second crystal oscillator is used to provide a standard clock signal for the control module, two ends of the second crystal oscillator are respectively connected to a third capacitor and a fourth capacitor, and the third capacitor and the fourth capacitor are grounded.

7. The wire harness detection device according to claim 1, characterized in that: The wiring harness detection device further includes a reset button, the control module is connected to one end of the reset button, the other end of the reset button is connected to a voltage source, and both ends of the reset button are connected in parallel to a fifth capacitor.

8. The wire harness detection device according to claim 1, characterized in that: The wiring harness detection device also includes a reminder module, which includes a first display light, one end of which is connected to a voltage source, and the other end of which is connected to the control module, wherein the first display light is lit when the first signal is a high-level signal and the second signal is a low-level signal; the reminder module also includes a second display light, one end of which is connected to the voltage source, and the other end of which is connected to the control module, wherein the second display light is lit when the first signal is a low-level signal and the second signal is a high-level signal.

9. The wire harness detection device according to claim 8, characterized in that: The reminder module also includes a buzzer, one end of the buzzer is connected to the voltage source, and the other end of the buzzer is connected to the control module.

10. A wire harness detection system, characterized in that: It comprises a host computer and a wire harness detection device as described in any one of claims 1 to 9, wherein the host computer is connected to a control module in the wire harness detection device via an interface chip and a serial port chip in the wire harness detection device, wherein the interface chip is used to convert a second level signal transmitted by the host computer into a first level signal and then transmit it to the control module via the serial port chip.

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