A device for quickly detecting the continuity of a wiring harness
By using a four-wire method to test the resistance at two points, and utilizing a test bench, resistance testing module, and controllable connection module, the problem of difficulty in comprehensively detecting continuity and connection points in wire harness testing is solved, thus achieving efficient and reliable wire harness testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG BEITE ELECTRONICS CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technologies, wire harness inspection mainly relies on manual testing or single-point connection, which makes it difficult to comprehensively detect continuity and disconnection points between wire harnesses, especially in multi-point wire harnesses where it is difficult to effectively detect connection points.
The method of testing the resistance at two points using a four-wire system is adopted. By setting up a test bench, resistance testing module, controllable connection module and host computer, the relay group is used to control the points of the wire harness for testing, so as to realize the comprehensive continuity and connection detection of any point between the wire harnesses.
It enables comprehensive continuity and connection detection at any point between wire harnesses, with reliable sampling results, convenient operation, and cost savings.
Smart Images
Figure CN224417018U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wire harness continuity testing technology, and in particular relates to a device for rapidly detecting the continuity of wire harnesses. Background Technology
[0002] With the rapid growth of the new energy industry, the demand for wiring harnesses used in the automotive and electronic equipment industries has increased significantly. The number of connection points in these harnesses has also diversified, making the testing of their channel performance increasingly important. Currently, manufacturers typically use manual testing or single-point connection testing for wiring harness inspection, which is relatively simplistic and makes it difficult to comprehensively test the continuity and connection points between wiring harnesses. It is also often difficult to effectively detect continuity issues between multi-point wiring harnesses. Therefore, there is an urgent need for a device that can quickly detect the continuity of wiring harnesses to solve the aforementioned technical problems. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a device for rapidly detecting the continuity of a wire harness. It employs a four-wire system to test the resistance at two points to determine the channel status between the two points. This device can directly test the continuity and connection status of any point between the wire harnesses, thereby solving the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] This utility model provides a device for quickly detecting the continuity of a wire harness, including a test bench, a resistance testing module, a controllable connection module, and a host computer. The test bench is provided with at least two test sockets, and each test socket is provided with multiple wire harness points for wire harness testing. The resistance testing module and the controllable connection module are both connected to the host computer, and the resistance testing module and the test sockets are both connected to the controllable connection module.
[0006] The controllable connection module includes a relay unit connected to each of the test sockets, and each relay unit includes a relay group connected to each of the wiring harness points.
[0007] The controllable connection module is used to receive test instructions from the host computer to control the wiring harness points corresponding to the relay group to perform wiring harness testing, and the resistance test module is used to receive the sampling results corresponding to the wiring harness test.
[0008] As a preferred embodiment of the above technical solution, the test bench is provided with a first test socket and a second test socket, and the controllable connection module includes a first relay unit and a second relay unit. The first test socket is connected to one end of the first relay unit, the second test socket is connected to one end of the second relay unit, and the other ends of the first relay unit and the second relay unit are both connected to the resistance testing module.
[0009] As a preferred embodiment of the above technical solution, the first test socket includes a plurality of first wiring harness points, the second test socket includes a plurality of second wiring harness points corresponding one-to-one with the plurality of first wiring harness points, the first relay unit includes a first relay group connected to each of the first wiring harness points, and the second relay unit includes a second relay group connected to each of the second wiring harness points, wherein both the first relay group and the second relay group include two relays.
[0010] As a preferred embodiment of the above technical solution, when the controllable connection module receives the test command sent by the host computer to perform a point-to-point test of the first wire harness point and the second wire harness point, the controllable connection module engages the first relay group and the second relay group, and outputs the corresponding first sampling result to the resistance test module. The first sampling result includes the resistance value of the two wire harness points that correspond one-to-one with each of the first wire harness point and each of the second wire harness point.
[0011] As a preferred embodiment of the above technical solution, when the controllable connection module receives the test command sent by the host computer to perform a point-to-multipoint test on the first and second wire harness points, the controllable connection module engages the first relay group and sequentially engages the second relay groups corresponding to all the second wire harness points in the second test socket. The resistance test module receives the second sampling result corresponding to the point-to-multipoint test of the wire harness, wherein the second sampling result includes the resistance values of each of the first wire harness points and all the second wire harness points in the second test socket.
[0012] As a preferred embodiment of the above technical solution, when the controllable connection module receives the test command sent by the host computer to perform a single-socket wire harness point-to-multipoint test on the first wire harness point and the second wire harness point, the controllable connection module engages the first relay group and the second relay group, and the first wire harness point and the second wire harness point are connected.
[0013] When the host computer uses the second wiring harness point as a reference point, the controllable connection module engages to remove the first relay group corresponding to the tested first wiring harness point, and performs a single-socket short-circuit test on the remaining first wiring harness points and the reference point respectively. The resistance test module receives the third sampling result corresponding to the single-socket short-circuit test.
[0014] As a preferred embodiment of the above technical solution, the sampling results include the sampling voltage and power of the test socket.
[0015] As a preferred embodiment of the above technical solution, the resistance testing module is a resistance scanning test instrument with two-point wire harness resistance testing function.
[0016] As a preferred embodiment of the above technical solution, the test instruction includes testing the resistance value of two points using a four-wire test wiring method.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] By setting up a test bench, a resistance testing module, a controllable connection module, and a host computer, the controllable connection module receives test commands from the host computer to control the corresponding wiring harness points of the relay group for wiring harness testing. The resistance testing module receives the sampling results corresponding to the wiring harness test and uses a four-wire system to test the resistance at two points to determine the channel status between the two points. It can directly test the continuity and connection status of any point between the wiring harness. Using one resistance testing module, it can realize multi-channel point-to-point continuity and connection status testing, multi-channel point-to-multi-point continuity and connection status testing, and determine whether there is a short circuit inside the socket under test. The sampling results are effective and reliable, the operation is convenient, and the cost is saved. Attached Figure Description
[0019] Figure 1 This is a structural block diagram of the device for rapidly detecting the continuity of a wire harness proposed in this utility model;
[0020] Figure 2 This is a circuit diagram of the first test socket proposed in this utility model;
[0021] Figure 3 The circuit diagram of the second test socket proposed in this utility model is shown below.
[0022] Figure 4 This is a schematic diagram illustrating the working principle of the device for rapidly detecting the continuity of a wire harness proposed in this utility model.
[0023] The symbols for the main components are explained below:
[0024] 10-Test bench; 11-First test socket; 12-First wiring harness point; 13-Second test socket; 14-Second wiring harness point; 20-Resistance test module; 30-Controllable connection module; 31-First relay unit; 32-First relay group; 33-Second relay unit; 34-Second relay group; 40-Host computer. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] See Figure 1 , Figure 2 and Figure 3 This utility model provides a device for quickly detecting the continuity of a wire harness, including a test bench 10, a resistance testing module 20, a controllable connection module 30, and a host computer 40. The test bench 10 is provided with at least two test sockets, and each test socket is provided with multiple wire harness points for wire harness testing. The resistance testing module 20 and the controllable connection module 30 are both connected to the host computer 40, and the resistance testing module 20 and the test sockets are both connected to the controllable connection module 30.
[0028] The controllable connection module 30 includes a relay unit connected to each of the test sockets, and each relay unit includes a relay group connected to each of the wiring harness points.
[0029] The controllable connection module 30 is used to receive test instructions from the host computer 40 to control the wiring harness points corresponding to the relay group to perform wiring harness testing, and the resistance test module 20 is used to receive the sampling results corresponding to the wiring harness test.
[0030] In this embodiment, the test bench 10 is provided with a first test socket 11 and a second test socket 13. The controllable connection module 30 includes a first relay unit 31 and a second relay unit 33. The first test socket 11 is connected to one end of the first relay unit 31, and the second test socket 13 is connected to one end of the second relay unit 33. The other ends of the first relay unit 31 and the second relay unit 33 are both connected to the resistance testing module 20. The first test socket 11 includes a plurality of first wiring harness points 12, and the second test socket 13 includes a plurality of second wiring harness points 14 corresponding one-to-one with the plurality of first wiring harness points 12. The first relay unit 31 includes a first relay group 32 connected to each first wiring harness point 12, and the second relay unit 33 includes a second relay group 34 connected to each second wiring harness point 33. Each of the first relay group 32 and the second relay group 34 includes two relays. The sampling results include the sampling voltage and power of the test socket. The resistance testing module 20 is a resistance scanning test instrument with a two-point wire harness resistance value testing function. The test command includes testing the resistance value of the two points using a four-wire test wiring method.
[0031] It should be noted that when the controllable connection module 30 receives the test command sent by the host computer 40 to perform a point-to-point test of the first wire harness point 12 and the second wire harness point 14, the controllable connection module 30 engages the first relay group 32 and the second relay group 34, and outputs the corresponding first sampling result to the resistance test module 20. The first sampling result includes the resistance value of each of the two wire harness points corresponding to each of the first wire harness point 12 and each of the second wire harness point 14.
[0032] When the controllable connection module 30 receives the test command sent by the host computer 40 to perform a point-to-multipoint test on the first wire harness point 12 and the second wire harness point 14, the controllable connection module 30 engages the first relay group 32 and sequentially engages the second relay groups 34 corresponding to all the second wire harness points 14 in the second test socket 13. The resistance test module 20 receives the second sampling result corresponding to the point-to-multipoint test of the wire harness. The second sampling result includes the resistance values of each of the first wire harness points 12 and all the second wire harness points 14 in the second test socket 13.
[0033] Specifically, when the controllable connection module 30 receives a test command sent by the host computer 40 to perform a single-socket point-to-multipoint test on the first wiring harness point 12 and the second wiring harness point 14, the controllable connection module 30 engages the first relay group 32 and the second relay group 34, connecting the first wiring harness point 12 and the second wiring harness point 14; when the host computer 40 uses the second wiring harness point 14 as a reference point, the controllable connection module 30 engages and removes the first relay group 32 corresponding to the tested first wiring harness point 12, and performs a single-socket short-circuit test on the remaining first wiring harness points 12 with the reference point, and the resistance test module 20 receives the third sampling result corresponding to the single-socket short-circuit test.
[0034] Specifically, such as Figure 4 As shown, the resistance testing module 20 is a resistance scanning test instrument, which has the function of testing the resistance of two-point wire harnesses and is connected to the controllable connection module 30. The controllable connection module 30 includes several relays and is connected to the resistance testing module 20, the wire harness under test, and the test bench 10. The test bench 10 is the tooling platform for testing the wire harness. The host computer 40 is a human-machine interface that controls the entire workflow of the test bench 10. The wiring methods of the first test socket 11 (denoted as test socket 1) and the second test socket 13 (denoted as test socket 2) are as follows: Test socket 1 contains four wire harnesses, each wire harness is tested using a four-wire system, and each wire harness point (first wire harness point 12) has two wires leading out, namely one sampling (V1+) and one power (VS1+); Test socket 2 contains four wire harnesses, each wire harness is tested using a four-wire system, and each wire harness point (second wire harness point 14) has two wires leading out, namely one sampling (V2+) and one power (VS2+).
[0035] The above describes a point-to-point test of a dual-socket wiring harness, which is a point-to-point test between two sockets. The test process is as follows: The host computer 40 sends relevant instructions (test instructions) to control the controllable connection module 30 to activate the corresponding relays to test the wiring harness at the corresponding points. For example, when testing the wiring harness at the first point (first wiring harness point 12) of the socket to be tested and the first point (second wiring harness point 14) of the socket to be tested, the controllable connection module 30 activates relays K1, K2, K9, and K10, forming outputs at the sampling points VS1+ / V1+ and VS2+ / V2+, thus forming a four-wire test connection. This connection is then used by the resistance testing module 20 to test the resistance at the two points to determine the channel status of the two points. Other points are tested similarly by activating the corresponding relays. That is, for each point that needs to be tested, the two relays (relay group) at that point are activated to provide the resistance testing module 20 with the resistance value to test the resistance at the two points to determine the channel status of the two points. Using a single resistance test module 20, multiple point-to-point continuity and connection tests can be performed, saving costs.
[0036] The above describes a point-to-multipoint test of a dual-socket wiring harness, which involves testing the wiring harness at multiple points between two sockets (the sockets under test). The test process is as follows: For example, the wiring harness at point 1 of socket 1 (point 12) corresponds to all points (point 14) of socket 2 under test. Point 1 of socket 1 only activates relays K1 and K2. Socket 2 then activates the two relays at the corresponding test points in turn, forming outputs at sampling points VS1+ / V1+ and VS2+ / V2+, thus creating a four-wire test connection. The resistance test module 20 is then used to test the resistance at the two points to determine the connection status. Using a single resistance test module 20 to achieve multi-point continuity and connection testing is flexible and cost-effective.
[0037] The above describes a single-socket wiring harness point-to-multipoint test, which is a single-socket wiring harness point-to-multipoint test. The test process is as follows: For example, the wiring harness at point 1 of socket 1 (point 12 of the first wiring harness) is tested for other points of the wiring harness inside the socket. Point 1 of socket 1 only has relays K1 and K2 engaged; point 1 of socket 2 (point 14 of the second wiring harness) only has relays K9 and K10 engaged. First, point 1 of socket 1 and point 1 of socket 2 are tested to confirm the continuity. Then, point 1 of socket 2 is taken as the reference point. Then, other points of socket 1 are tested one by one with the reference point. This can achieve the test of whether there is a short circuit inside a single socket. In other words, a single resistance test module is used to test and determine whether there is a short circuit between the sockets under test.
[0038] It should be understood that by setting up a test bench 10, a resistance testing module 20, a controllable connection module 30, and a host computer 40, the controllable connection module 30 receives test commands from the host computer 40 to control the corresponding wiring harness points of the relay group to perform wiring harness testing. The resistance testing module 20 receives the sampling results corresponding to the wiring harness test and uses a four-wire system to test the resistance value at two points to determine the channel status between the two points. It can directly test the continuity and connection status of any point between the wiring harness. Using one resistance testing module 20, it can realize multi-channel point-to-point continuity and connection status testing, multi-channel point-to-multi-point continuity and connection status testing, and determine whether there is a short circuit inside the socket under test. The sampling results are effective and reliable, the operation is convenient, and the cost is saved.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for rapidly detecting the continuity of a wire harness, characterized in that, The device includes a test bench, a resistance testing module, a controllable connection module, and a host computer. The test bench is equipped with at least two test sockets, and each test socket is equipped with multiple wire harness points for wire harness testing. The resistance testing module and the controllable connection module are both connected to the host computer, and the resistance testing module and the test sockets are both connected to the controllable connection module. The controllable connection module includes a relay unit connected to each of the test sockets, and each relay unit includes a relay group connected to each of the wiring harness points. The controllable connection module is used to receive test instructions from the host computer to control the wiring harness points corresponding to the relay group to perform wiring harness testing, and the resistance test module is used to receive the sampling results corresponding to the wiring harness test.
2. The device for rapidly detecting the continuity of a wire harness according to claim 1, characterized in that, The test bench is provided with a first test socket and a second test socket. The controllable connection module includes a first relay unit and a second relay unit. The first test socket is connected to one end of the first relay unit, and the second test socket is connected to one end of the second relay unit. The other ends of the first relay unit and the second relay unit are both connected to the resistance test module.
3. The device for rapidly detecting the continuity of a wire harness according to claim 2, characterized in that, The first test socket includes multiple first wiring harness points, the second test socket includes multiple second wiring harness points corresponding one-to-one with the multiple first wiring harness points, the first relay unit includes a first relay group connected to each of the first wiring harness points, and the second relay unit includes a second relay group connected to each of the second wiring harness points, wherein both the first relay group and the second relay group include two relays.
4. The device for rapidly detecting the continuity of a wire harness according to claim 3, characterized in that, When the controllable connection module receives the test command sent by the host computer to perform a point-to-point test of the first wire harness point and the second wire harness point, the controllable connection module engages the first relay group and the second relay group, and outputs the corresponding first sampling result to the resistance test module. The first sampling result includes the resistance value of the two wire harness points that correspond one-to-one with each of the first wire harness point and each of the second wire harness point.
5. The device for rapidly detecting the continuity of a wire harness according to claim 3, characterized in that, When the controllable connection module receives the test command sent by the host computer to perform a point-to-multipoint test on the first and second wire harness points, the controllable connection module engages the first relay group and sequentially engages the second relay groups corresponding to all the second wire harness points in the second test socket. The resistance test module receives the second sampling result corresponding to the point-to-multipoint test of the wire harness, wherein the second sampling result includes the resistance values of each of the first wire harness points and all the second wire harness points in the second test socket.
6. The device for rapidly detecting the continuity of a wire harness according to claim 3, characterized in that, When the controllable connection module receives the test command sent by the host computer to perform a single-socket wire harness point-to-multipoint test on the first wire harness point and the second wire harness point, the controllable connection module engages the first relay group and the second relay group, and the first wire harness point and the second wire harness point are connected. When the host computer uses the second wiring harness point as a reference point, the controllable connection module engages to remove the first relay group corresponding to the tested first wiring harness point, and performs a single-socket short-circuit test on the remaining first wiring harness points and the reference point respectively. The resistance test module receives the third sampling result corresponding to the single-socket short-circuit test.
7. The device for rapidly detecting the continuity of a wire harness according to claim 1, characterized in that, The sampling results include the sampling voltage and power of the test socket.
8. The device for rapidly detecting the continuity of a wire harness according to claim 1, characterized in that, The resistance testing module is a resistance scanning test instrument with two-point wire harness resistance measurement function.
9. The device for rapidly detecting the continuity of a wire harness according to claim 1, characterized in that, The test instructions include testing the resistance value at two points using a four-wire test connection method.