Wire harness detection system

Abstract

The utility model relates to a wire harness detection system. The wire harness detection system comprises a test bench, an adapter of at least one specification and a wire harness detection device. The test bench comprises a wire harness fixing assembly. A to-be-tested wire harness is detachably fixed on the test bench through the wire harness fixing assembly, and two ends of the to-be-tested wire harness are detachably connected with the wire harness detection device through an adapter matched in specification. According to the wire harness detection system provided by the invention, the availability of the to-be-detected wire harness after detection is finished can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power electronics, and particularly relates to a wire harness detection system. BACKGROUND

[0002] The wire harness is a total body of a certain load source group to provide service equipment, and is an indispensable part in many devices.

[0003] Taking a vehicle as an example, the reliability of the wire harness in the vehicle is an important prerequisite for ensuring the stability of signal transmission and power supply during the operation of the vehicle, and therefore, the reliability of the wire harness needs to be detected. In the related art, the wire harness is usually connected to a wire harness detection instrument for detection.

[0004] However, the detection method of the wire harness in the related art has an impact on the performance of the wire harness, resulting in poor usability of the wire harness after detection. INVENTION CONTENTS

[0005] Therefore, the present application provides a wire harness detection system, which can reduce the impact of the wire harness detection process on the performance of the wire harness.

[0006] The present application provides a wire harness detection system, which comprises a test bench, at least one type of adapter, and a wire harness detection device; the test bench comprises a wire harness fixing assembly;

[0007] The wire harness to be detected is detachably fixed to the test bench through the wire harness fixing assembly, and the two ends of the wire harness to be detected are detachably connected to the wire harness detection device through an adapter of a matching type.

[0008] In the technical scheme of the present application, the two ends of the wire harness to be detected are detachably connected to the wire harness detection device through an adapter of a matching type, and the detachable design enables the wire harness to be detected to be intact after detection, facilitating the reuse of the wire harness to be detected and improving the usability of the wire harness to be detected after detection by the wire harness detection system.

[0009] In some embodiments, the adapter of each type comprises a wire harness plug-in part and a circuit plug-in part connected to the wire harness plug-in part; the wire harness plug-in part is used to connect the two ends of the wire harness to be detected; and the circuit plug-in part is used to connect the wire harness detection device. In this way, the adapter of each type can adapt to the wire harness to be detected of a corresponding type, and the two ends of each wire harness to be detected can be detachably connected to the wire harness plug-in part of the adapter of a matching type, without the need to customize a special detection interface for the wire harness to be detected of different types, thereby improving the universality of detection.

[0010] In some embodiments, the wire harness adapter includes at least one wire harness connection terminal, the ports of the wire harness under test include at least one conductive terminal, and each wire harness connection terminal of the wire harness adapter is connected to a corresponding conductive terminal of the ports of the wire harness under test. In this way, by connecting each wire harness connection terminal of the wire harness adapter to a corresponding conductive terminal of the ports of the wire harness under test, the accuracy of connecting the ports of the wire harness under test to the wire harness adapter is improved.

[0011] In some embodiments, the circuit adapter includes at least one circuit connection terminal, the wire harness detection device is provided with at least one access terminal, and each circuit connection terminal of the circuit adapter is connected to a corresponding access terminal of the wire harness detection device. In this way, by connecting each circuit connection terminal of the circuit adapter to a corresponding access terminal of the wire harness detection device, the accuracy of connecting the circuit adapter to the wire harness detection device is improved.

[0012] In some embodiments, the circuit adapter further includes a sliding rail, and the wire harness detection device further includes a sliding member that is slidable along the sliding rail. In this way, by combining the sliding rail and the sliding member, the simplicity of connecting the circuit adapter to the wire harness detection device is improved.

[0013] In some embodiments, the wire harness detection device includes a flexible circuit board and a wire harness detection device.

[0014] The two ends of the wire harness under test are detachably connected to one end of the flexible circuit board through a specification-matched adapter, the other end of the flexible circuit board is connected to the wire harness detection device, and the one end of the flexible circuit board is further fixed to the test bench. In this way, the design of the flexible circuit board reduces the distortion of the signal obtained by the wire harness detection device due to vibration or external force applied to the wire harness under test, and improves the accuracy of detecting the wire harness under test.

[0015] In some embodiments, the wire harness detection device includes a switch module and a wire harness detection module, the switch module includes a plurality of switch devices, the first ends of the plurality of switch devices are connected to the other end of the flexible circuit board, and the second ends of the plurality of switch devices are connected to the wire harness detection module. In this way, by controlling the closing or opening of each switch device, the detection path of different lines in the wire harness under test is controlled to be closed or opened, and the detection efficiency of the wire harness under test is improved.

[0016] In some embodiments, the switch module further includes a decoder, the input end of the decoder is connected to the wire harness detection module, and the output end of the decoder is connected to the control end of the plurality of switch devices. In this way, since the number of input channels in the decoder is less than the number of output channels, the decoder and the wire harness detection module are connected through fewer direct connection circuits, and the number of control pins of the wire harness detection module is reduced.

[0017] In some embodiments, the wire harness detection module comprises a wire harness detector and a controller; the second ends of the plurality of switching devices are connected to the input end of the wire harness detector, the output end of the wire harness detector is connected to the controller, and the controller is further connected to the control ends of the plurality of switching devices. The wire harness detector and the controller are separately arranged, and the positions of the wire harness detector and the controller can be flexibly arranged according to actual needs, thereby improving the layout flexibility of the wire harness detection system.

[0018] In some embodiments, the flexible circuit board comprises a plurality of conductive lines, and each switching device is connected to a conductive line in the flexible circuit board. In this way, the wire harness detection module connects the wire harness to be detected to each switching device through each conductive line in the flexible circuit board, without the need for complex wiring between the wire harness to be detected and the wire harness detection module, thereby improving the detection efficiency of the wire harness to be detected.

[0019] In some embodiments, the test bench comprises a wire harness fixing assembly and a vibration table; the wire harness fixing assembly comprises a fixing main body arranged on the vibration table and a plurality of wire harness fixing pieces arranged on the fixing main body, and each wire harness fixing piece is connected to the fixing main body. In this way, the vibration table can drive the wire harness to be detected to vibrate, and the wire harness detection system can still detect the wire harness to be detected under the vibration scene, thereby improving the comprehensiveness of the wire harness detection.

[0020] In some embodiments, the fixing main body comprises a base body and a plurality of telescopic pieces; the base body comprises a plurality of recessed portions, one end of each telescopic piece is fixedly connected to the bottom wall of each recessed portion, and the other end of each telescopic piece is fixedly connected to one end of each wire harness fixing piece; when each telescopic piece is extended, a gap is formed between the other end of each wire harness fixing piece and the fixing main body, and the wire harness to be detected can enter the gap; and when each telescopic piece is compressed, the other end of each wire harness fixing piece cooperates with the fixing main body to fix the wire harness to be detected. In this way, the size of the gap between the wire harness fixing piece and the fixing main body can be adjusted by the extension and compression of the telescopic piece, thereby improving the efficiency of the wire harness fixing assembly in fixing the wire harness to be detected.

[0021] In some embodiments, each wire harness fixing piece comprises a plug-in portion and a bent portion connected to the plug-in portion; the plug-in portion is fixedly connected to the fixing main body, and the bent portion is located on the side of the plug-in portion away from the fixing main body; the bent portion is bent towards the side close to the fixing main body, and the end of the bent portion away from the plug-in portion is chamfered. In this way, the bent portion can limit the wire harness to be detected by being bent towards the side close to the fixing main body, thereby reducing the situation that the wire harness to be detected falls off from the wire harness fixing assembly, improving the reliability of the wire harness fixing assembly in fixing the wire harness to be detected, and the end of the bent portion away from the plug-in portion is chamfered, thereby reducing the risk of damage to the wire harness to be detected. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained on the basis of these drawings without creative labor.

[0023] Figure 1 The structural schematic diagram of the wire harness detection system provided for the first embodiment is shown in the figure.

[0024] Figure 2 The structural schematic diagram of the adapter provided for some embodiments is shown in the figure.

[0025] Figure 3 The structural schematic diagram of the adapter provided for some other embodiments is shown in the figure.

[0026] Figure 4 The schematic diagram of the connection relationship between the wire harness to be detected and the wire harness detection device provided for some embodiments is shown in the figure.

[0027] Figure 5 The structural schematic diagram of the wire harness detection system provided for the second embodiment is shown in the figure.

[0028] Figure 6 The structural schematic diagram of the wire harness detection system provided for the third embodiment is shown in the figure.

[0029] Figure 7 The structural schematic diagram of the wire harness detection system provided for the fourth embodiment is shown in the figure.

[0030] Figure 8 The structural schematic diagram of the wire harness detection system provided for the fifth embodiment is shown in the figure.

[0031] Figure 9 The connection schematic diagram of a flexible circuit board, a switch module, a wire harness detector and a controller provided for some embodiments is shown in the figure.

[0032] Figure 10 The structural schematic diagram of the wire harness detection system provided for the sixth embodiment is shown in the figure.

[0033] Figure 11 The schematic diagram of the connection between the fixed main body part and a wire harness fixing part in the wire harness fixing assembly is shown in the figure.

[0034] Figure 12 The structural schematic diagram of the wire harness detection system provided for the seventh embodiment is shown in the figure.

[0035] Figure 13 The structural schematic diagram of the adapter and the flexible circuit board after being connected provided for some embodiments is shown in the figure.

[0036] The reference signs in the detailed description of the embodiments are as follows:

[0037] 10, harness detection system; 11, test bench; 12, harness detection device; 13, adapter;

[0038] 20, harness to be detected; 21, wire; 22, first connecting part; 23, second connecting part;

[0039] 131, harness plug-in part; 132, circuit plug-in part; 133, power transmission line; 1311, first plug-in part; 1312, second plug-in part; 1313, harness connecting terminal; 1321, circuit connecting terminal; 24, conductive terminal;

[0040] 121, flexible circuit board; 1211, access terminal; 1212, outgoing terminal; 1213, card slot; 122, harness detection device; 1221, switch module; 1222, harness detection module; 1223, switching device; 1224, decoder; 1225, harness detector; 1226, controller; 14, test fixing part;

[0041] 111, harness fixing assembly; 112, vibration table; 1111, fixing main body part; 1112, harness fixing part; 1113, base body; 1114, telescopic part; 1115, plug-in part; 1116, bending part. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not intended to limit the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used in the specification and claims of the present application and in the accompanying drawings, are intended to cover not exclusively inclusive.

[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0045] Reference to an "embodiment" in this text means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein can be combined with each other in their various permutations and combinations.

[0046] In the description of the embodiments of the application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0047] In the description of the embodiments of the application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0048] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0049] The wire harness can be applied to many aspects of life and industry. Taking the application of wire harness in vehicles as an example, there are various wire harnesses in vehicles. Before the wire harness is applied to the vehicle, the wire harness needs to be detected for reliability. After the wire harness is detected for reliability, the wire harness can be applied to the vehicle.

[0050] In the conventional technology, the method for detecting the to-be-tested wire harness is as follows: the two ends of the to-be-tested wire harness are connected with a wire harness detection device through welding, the wire harness detection device detects the circuit parameters of the wire harness, and the wire harness detection device determines whether the to-be-tested wire harness is qualified according to the circuit parameters.

[0051] In the prior art, after the detection of the to-be-detected wire harness is completed, there are welding points at the two ends of the to-be-detected wire harness, and the to-be-detected wire harness with the welding points affects the performance of the to-be-detected wire harness, resulting in poor usability of the wire harness.

[0052] Based on the above considerations, in order to solve the problem that the welding of the two ends of the to-be-detected wire harness to the wire harness detection device causes the welding points at the two ends of the to-be-detected wire harness, a wire harness detection system is designed, which comprises a wire harness detection device and at least one adapter of a certain specification, and the two ends of the to-be-detected wire harness are detachably connected to the wire harness detection device through an adapter of a matching specification.

[0053] In such a wire harness detection system, the to-be-detected wire harness is detachably connected to the wire harness detection device through the adapter, and the detachable design enables the to-be-detected wire harness to be kept intact after the detection is completed, facilitating the reuse of the to-be-detected wire harness and improving the usability of the to-be-detected wire harness after the detection of the wire harness detection system is completed.

[0054] The wire harness detection system in the embodiments of the present application can detect wire harnesses in any scenario. For example, taking the application of wire harnesses in vehicles as an example, the wire harnesses in vehicles include engine wire harnesses, instrument wire harnesses, and light wire harnesses, etc. The engine wire harness is a collection of wires connecting various components and systems of the engine, responsible for transmitting power and signals. The body wire harness is a collection of wires connecting various components and systems of the vehicle body, responsible for transmitting power and signals. The instrument wire harness is a collection of wires connecting the instrument panel and the driver's control panel, responsible for transmitting various indicator lights, instruments, and control signals on the instrument panel. The light wire harness is a collection of wires connecting the vehicle light system, responsible for transmitting power and signals, connecting the front headlight, tail light, or turn signal, etc.

[0055] The vehicle in the embodiments of the present application can include a gasoline car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or a range extender car, etc.

[0056] Figure 1 The structure schematic diagram of the wire harness detection system provided for the first embodiment is shown in FIG. 1. Figure 1 As shown in FIG. 1, the wire harness detection system 10 comprises a test bench 11, a wire harness detection device 12, and at least one adapter 13 of a certain specification. In the drawings of the embodiments of the present application, one selected adapter 13 is taken as an example for illustration.

[0057] The to-be-detected wire harness 20 comprises at least one wire 21 and a first connecting portion 22 and a second connecting portion 23 connected to the two ends of the at least one wire 21. In the drawings of the embodiments of the present application, the to-be-detected wire harness 20 is taken as an example for illustration, which comprises three wires 21. In other embodiments, the to-be-detected wire harness 20 can comprise other numbers of wires 21, for example, 1, 2, 10, or 20, etc., which are not limited in the embodiments of the present application.

[0058] The test bench 11 comprises a harness fixing assembly 111; the harness under test 20 is detachably fixed on the test bench 11 through the harness fixing assembly 111, and two ends of the harness under test 20 are detachably connected with the harness detection device 12 through a specification-matched adapter 13.

[0059] The specification-matched adapter 13 is an adapter 13 matched with the harness under test 20. The specification-matched adapter 13 can comprise an adapter 13 matched with two connection portions of the harness under test 20. For example, the adapter 13 can be connected with the two connection portions of the harness under test 20, and a conductive portion of the adapter 13 can be connected with a conductive portion of the two connection portions of the harness under test 20.

[0060] In some embodiments, the relevant personnel can select a specification-matched adapter 13 from at least one kind of adapters 13 according to the model or shape of the harness under test 20, i.e., the specification-matched adapter 13 is included in the at least one kind of adapters 13.

[0061] In some embodiments, the harness detection system 10 can be replaced by a harness test system, and the detection of the harness can be replaced by the test of the harness.

[0062] In some embodiments, the two ends of the harness under test 20 are detachably connected with one end of the adapter 13, and the other end of the adapter 13 is detachably connected with the harness detection device 12. For example, one end of the adapter 13 can comprise two plug-in portions to connect the two ends of the harness under test 20, respectively. For example, the two ends of the harness under test 20 respectively comprise two connection portions (the first connection portion 22 and the second connection portion 23), and one end of the adapter 13 can comprise two plug-in portions, and the two connection portions are connected with the two plug-in portions, respectively.

[0063] In some embodiments, one end of each adapter 13 is used to connect to the harness under test 20, and the other end of each adapter 13 is used to connect to the harness detection device 12. In some embodiments, in the at least one kind of adapters 13, the shape of one end of different adapters 13 is different to match different types of harness under test 20, and the shape of the other end of different adapters 13 is the same, so that different adapters 13 can be fixedly connected with the harness detection device 12.

[0064] In some embodiments, the adapter 13 can be referred to as a counterpart.

[0065] In the technical solution of the embodiment of the present application, the two ends of the wiring harness 20 to be tested are detachably connected to the wiring harness detection equipment 12 through an adapter 13 of matching specifications. The detachable design enables the wiring harness 20 to be retained intact after the detection is completed, which facilitates the reuse of the wiring harness 20 to be tested and improves the availability of the wiring harness detection system 10 after the detection of the wiring harness 20 is completed.

[0066] Figure 2 and Figure 3 A schematic diagram of the structure of the adapter provided in some embodiments, Figure 2 and Figure 3 In the embodiment, the adapter 13 includes a wiring harness connector 131 and a circuit connector 132 connected to the wiring harness connector 131. The wiring harness connector 131 is used to connect the two ends of the wiring harness 20 to be tested. The circuit connector 132 is used to connect to the wiring harness testing device 12. The wiring harness connector 131 of the adapter 13 includes a first connector 1311 and a second connector 1312. The first connector 1311 and the second connector 1312 are respectively used to connect the two connecting parts of the wiring harness 20 to be tested.

[0067] Each specification includes a wiring harness plug-in portion 131 and a circuit plug-in portion 132 connected to the wiring harness plug-in portion 131. Each specification of the adapter 13 includes a wiring harness plug-in portion 131 and a first plug-in portion 1311 and a second plug-in portion 1312.

[0068] exist Figure 2 In the embodiment of the present invention, there is no gap between the wiring harness plug-in portion 131 (including the first plug-in portion 1311 and the second plug-in portion 1312) and the circuit plug-in portion 132 in the adapter 13. Figure 2 In the embodiment, the harness plug-in portion 131 (including the first plug-in portion 1311 and the second plug-in portion 1312 ) and the circuit plug-in portion 132 in the adapter 13 are connected via a power transmission line 133 .

[0069] In the technical solution of the embodiment of the present application, each specification of the adapter 13 can adapt to the corresponding specification of the wiring harness 20 to be tested. For both ends of each wiring harness 20 to be tested, they can be detachably connected to the wiring harness plug-in part 131 of the adapter 13 with matching specifications. There is no need to customize special detection interfaces for wiring harnesses 20 to be tested of different specifications, which improves the versatility of detection.

[0070] Figure 4 Schematic diagram of the connection relationship between the wiring harness to be tested and the wiring harness detection device provided in some embodiments, in conjunction with reference to Figure 2 and Figure 4The to-be-tested wire harness 20 includes a plurality of wires 21 and first and second connecting portions 22 and 23 connected to both ends of the plurality of wires 21, respectively. Each of the connecting portions includes a plurality of conductive terminals 24 corresponding to the plurality of wires 21, respectively. The adapter 13 includes a wire harness plug-in portion 131 and a circuit plug-in portion 132 connected to the wire harness plug-in portion 131. The wire harness plug-in portion 131 includes a first plug-in portion 1311 and a second plug-in portion 1312. The first plug-in portion 1311 includes a plurality of wire harness connecting terminals 1313. When the first connecting portion 22 is inserted into the first plug-in portion 1311, the plurality of conductive terminals 24 of the first connecting portion 22 are respectively connected to the plurality of wire harness connecting terminals 1313 of the first plug-in portion 1311. The second plug-in portion 1312 includes a plurality of wire harness connecting terminals 1313. When the second connecting portion 23 is inserted into the second plug-in portion 1312, the plurality of conductive terminals 24 of the second connecting portion 23 are respectively connected to the plurality of wire harness connecting terminals 1313 of the second plug-in portion 1312.

[0071] The first side of the circuit plug-in portion 132 is provided with a plurality of circuit connecting terminals 1321, and the second side of the circuit plug-in portion 132 is provided with a plurality of circuit connecting terminals 1321. The first side and the second side are opposite to each other. The plurality of circuit connecting terminals 1321 of the first side are respectively connected to the plurality of wire harness connecting terminals 1313 of the first plug-in portion 1311. The plurality of circuit connecting terminals 1321 of the second side are respectively connected to the plurality of wire harness connecting terminals 1313 of the second plug-in portion 1312. Figure 4 In other embodiments, the first side and the second side are adjacent to each other, or the circuit connecting terminals 1321 are all arranged on one side of the circuit plug-in portion 132, for example, on the side of the circuit plug-in portion 132 facing away from the wire harness plug-in portion 131.

[0072] The wire harness detection device 12 includes at least one access terminal 1211. For example, the wire harness detection device 12 can be connected to an instrument for detecting the to-be-tested wire harness. For example, the number of access terminals 1211 included in the wire harness detection device 12 can be equal to the maximum number of wires 21 included in the wire harness that can be detected by the wire harness detection device 12. For example, in the embodiment shown in Figure 4 For example, in the embodiment shown in FIG. 1, the wire harness detection device 12 includes eight access terminals 1211. When the circuit plug-in portion 132 is connected to the wire harness detection device 12, three circuit connecting terminals 1321 of the first side of the circuit plug-in portion 132 are connected to three access terminals 1211 of the first side of the recess included in the wire harness detection device 12, and three circuit connecting terminals 1321 of the second side of the circuit plug-in portion 132 are connected to three access terminals 1211 of the second side of the recess included in the wire harness detection device 12.

[0073] In some embodiments, the wire harness plug-in part 131 comprises at least one wire harness connecting terminal 1313, the port of the wire harness under test 20 comprises at least one conductive terminal 24; each wire harness connecting terminal 1313 in the wire harness plug-in part 131 corresponds to connect one conductive terminal 24 in the port of the wire harness under test 20.

[0074] In the technical scheme of the embodiments of the present application, by connecting each wire harness connecting terminal 1313 in the wire harness plug-in part 131 to one conductive terminal 24 in the port of the wire harness under test 20, the accuracy of connecting the port of the wire harness under test 20 to the wire harness plug-in part 131 is improved.

[0075] In some embodiments, the circuit plug-in part 132 comprises at least one circuit connecting terminal 1321, and the wire harness detection device 12 is provided with at least one access terminal 1211; each circuit connecting terminal 1321 in the circuit plug-in part 132 corresponds to connect one access terminal 1211 in the wire harness detection device 12.

[0076] In the technical scheme of the embodiments of the present application, by connecting each circuit connecting terminal 1321 in the circuit plug-in part 132 to one access terminal 1211 in the wire harness detection device 12, the accuracy of connecting the circuit plug-in part 132 to the wire harness detection device 12 is improved.

[0077] In some embodiments, the circuit plug-in part 132 further comprises a sliding rail (not shown in the figure), and the wire harness detection device 12 further comprises a sliding piece (not shown in the figure), the sliding piece being slidable along the sliding rail.

[0078] In the technical scheme of the embodiments of the present application, by combining the sliding rail and the sliding piece, the simplicity of connecting the circuit plug-in part 132 to the wire harness detection device 12 is improved.

[0079] In some embodiments, the circuit plug-in part 132 further comprises a conductive groove (not shown in the figure), and the at least one circuit connecting terminal 1321 is arranged in the conductive groove.

[0080] In some embodiments, the implementation manner of the corresponding connection between the two terminals can comprise that one terminal is needle-shaped and the other terminal is hole-shaped, and the corresponding connection between the two terminals is realized by inserting one terminal into the other terminal.

[0081] Figure 5 The structural schematic diagram of the wire harness detection system provided for the second embodiment, Figure 5 Compared with Figure 1 The difference lies in that, Figure 5The harness detection device 12 in the embodiment comprises a flexible circuit board 121 and a harness detection apparatus 122; two ends of the harness 20 to be detected are detachably connected to one end of the flexible circuit board 121 through the adapter 13 matched in specification, and the other end of the flexible circuit board 121 is connected to the harness detection apparatus 122; and the one end of the flexible circuit board 121 is also fixed to the test bench 11.

[0082] In the technical scheme of the embodiment, the design of the flexible circuit board 121 reduces the signal distortion caused by the vibration or external force applied to the harness 20 to be detected and acquired by the harness detection apparatus 122, and improves the accuracy of detection of the harness 20 to be detected.

[0083] In some other embodiments, the harness detection system comprises the test bench 11, the flexible circuit board 121 and the harness detection apparatus 122. The harness 20 on the test bench 11 is connected to the harness detection apparatus 122 through the flexible circuit board 121. In some implementations, the harness 20 is connected to the flexible circuit board 121 through the adapter 13.

[0084] In the drawings of the embodiment, the flexible circuit board 121 is fixed to the outer surface of the test bench 11, however, in other embodiments, one end of the flexible circuit board 121 can extend into the inner side of the test bench 11, so that the first connector and the second connector of the harness 20 to be detected also extend into the test bench 11 and are connected to the flexible circuit board 121 through the adapter 13.

[0085] Figure 6 A structural schematic diagram of the harness detection system provided for the third embodiment is shown in FIG. 3, Figure 6 Compared with Figure 5 The difference between the third embodiment and the first embodiment lies in that, Figure 6 The harness detection apparatus 122 in the embodiment comprises a switch module 1221 and a harness detection module 1222, the switch module 1221 comprises a plurality of switch devices 1223; the first ends of the plurality of switch devices 1223 are connected to the other end of the flexible circuit board 121, and the second ends of the plurality of switch devices 1223 are connected to the harness detection module 1222.

[0086] In some embodiments, the switch module 1221 further comprises a circuit board fixing assembly (not shown in the drawings) for fixing the flexible circuit board 121, and the circuit board fixing assembly is used for fixing the other end of the flexible circuit board 121 in the flexible circuit board 121. In some embodiments, the switch device 1223 can comprise an optical coupling device, an optical metal-oxide semiconductor field-effect transistor (MOS) isolation device, an MOS switch, a circuit breaker or a disconnecting switch, etc.

[0087] In the drawings of the embodiments of the present application, the switch device 1223 is shown as an optical coupling device. The optical coupling device is a device in which a light emitting device and a light receiving device are packaged in the same tube. When a control terminal is powered on, the light emitting device emits light, and the light receiving device generates a current after receiving the light, thereby realizing the conversion between light and electricity.

[0088] In the technical solution of the embodiments of the present application, by controlling the closing and opening of each switch device 1223, the closing and opening of the detection paths of different lines in the to-be-detected wire harness 20 are controlled, and the detection efficiency of the to-be-detected wire harness 20 is improved.

[0089] Figure 7 A structural schematic diagram of a wire harness detection system provided for the fourth embodiment is shown in FIG. 4. Figure 7 Compared with Figure 6 The difference between the fourth embodiment and the third embodiment is that Figure 7 The switch module 1221 in the fourth embodiment further includes a decoder 1224. An input end of the decoder 1224 is connected to the wire harness detection module 1222, and output ends of the decoder 1224 are connected to control ends of the plurality of switch devices 1223.

[0090] In the technical solution of the embodiments of the present application, the number of input channels in the decoder 1224 is less than the number of output channels, so that the decoder 1224 is connected to the wire harness detection module 1222 through fewer direct connection circuits, and the number of control pins of the wire harness detection module 1222 is reduced.

[0091] Figure 8 A structural schematic diagram of a wire harness detection system provided for the fifth embodiment is shown in FIG. 5. Figure 8 Compared with Figure 7 The difference between the fifth embodiment and the fourth embodiment is that Figure 8 The wire harness detection module 1222 in the fifth embodiment includes a wire harness detector 1225 and a controller 1226. Second ends of the plurality of switch devices 1223 are connected to an input end of the wire harness detector 1225, an output end of the wire harness detector 1225 is connected to the controller 1226, and an input end of the decoder 1224 is further connected to the controller 1226.

[0092] In some embodiments, the controller 1226 can include a computer device or any other device having data processing capability. The controller 1226 can include a display screen, which can display test results and the like.

[0093] In some embodiments, the wire harness detection module 1222 includes the wire harness detector 1225 and the controller 1226. Second ends of the plurality of switch devices 1223 are connected to an input end of the wire harness detector 1225, an output end of the wire harness detector 1225 is connected to the controller 1226, and control ends of the plurality of switch devices 1223 are further connected to the controller 1226.

[0094] In some embodiments, the wire harness detector 1225 may include one of the following: a time domain reflectometer, a multimeter, an oscilloscope, or a multi-channel data acquisition device. For example, the multimeter may include a 6.5-digit multimeter. The wire harness detector 1225 is used to measure wire harness continuity, contact impedance, impedance continuity, etc.

[0095] In the technical solution of the embodiment of the present application, the wire harness detector 1225 and the controller 1226 are set separately, and the positions of the wire harness detector 1225 and the controller 1226 can be flexibly set according to actual needs, thereby improving the layout flexibility of the wire harness detection system 10.

[0096] Figure 9 A schematic diagram of the connection of a flexible circuit board, a switch module, a harness detector, and a controller is provided in some embodiments. Figure 9 As shown, the flexible circuit board 121 includes multiple conductive circuits (not shown in the figure), and each switch device 1223 is correspondingly connected to each conductive circuit of a connection portion of the flexible circuit board 121 for conducting the wiring harness 20 to be tested. For example, the flexible circuit board 121 includes 8 conductive circuits, the first 4 conductive circuits are used to connect the first connection portion 22 of the wiring harness 20 to be tested, and the last 4 conductive circuits are used to connect the second connection portion 23 of the wiring harness 20 to be tested. The multiple switch devices 1223 are respectively connected to the first 4 conductive circuits in the flexible circuit board 121. Figure 9 In some embodiments other than the above, the plurality of switch devices 1223 are connected to the last four conductive lines in the flexible circuit board 121, respectively, or Figure 9 In other embodiments, multiple switch devices 1223 are connected to each conductive circuit in the flexible circuit board 121, or each switch device 1223 is connected to each conductive circuit in the flexible circuit board 121. In this way, each wire 21 in the wiring harness 20 is controlled by two switch devices 1223 at both ends. Each conductive circuit includes an input terminal 1211, a corresponding output terminal 1212, and a connection circuit (not shown) between the input terminal 1211 and the corresponding output terminal 1212.

[0097] In this way, the harness detection module 1222 is connected to the harness 20 under test via the conductive traces and switch devices 1223 in the flexible circuit board 121, eliminating the need for complex wiring between the harness 20 under test and the harness detection module 1222, thereby improving the detection efficiency of the harness 20 under test. For example, one end of the flexible circuit board 121 includes a plurality of input terminals 1211, and the other end of the flexible circuit board 121 includes a plurality of output terminals 1212. The plurality of input terminals 1211 are respectively connected to the plurality of output terminals 1212. The plurality of output terminals 1212 are respectively connected to the first ends of the plurality of switch devices 1223. The second ends of the plurality of switch devices 1223 are all connected to the harness detector 1225.

[0098] The other end of the flexible circuit board 121 is connected to the input end of the wire harness detector 1125 through the switching device 1223, the output end of the wire harness detector 1125 is connected to the controller 1226, the controller is also connected to the input end of the decoder 1224, and the output end of the decoder 1224 is connected to the control end of the plurality of switching devices 1223.

[0099] In some embodiments, Figure 9 The embodiment of the application is combined with the scheme of the embodiment of the application, Figure 4 The embodiment of the application can enable the wire harness detector 1225 to be connected to the wire harness 20 to be detected, so that the wire harness 20 to be detected is detected.

[0100] Figure 10 The structural schematic diagram of the wire harness detection system provided by the sixth embodiment is shown in the figure, Figure 10 Compared with Figure 1 The difference between the embodiment of the application and the prior art lies in that, Figure 10 The test bench 11 in the embodiment of the application comprises a wire harness fixing assembly 111 and a vibration table 112; the wire harness fixing assembly 111 comprises a fixing main body part 1111 arranged on the vibration table 112 and a plurality of wire harness fixing parts 1112 arranged on the fixing main body part 1111, and each wire harness fixing part 1112 is connected to the fixing main body part 1111.

[0101] In the technical scheme of the embodiment of the application, the vibration table 112 can drive the wire harness 20 to be detected to vibrate, and the wire harness detection system 10 can still detect the wire harness 20 to be detected under the vibration scene, thereby improving the comprehensiveness of the wire harness detection.

[0102] Figure 11 The figure is a schematic diagram of the connection between the fixing main body part and one wire harness fixing part in the wire harness fixing assembly; the fixing main body part 1111 comprises a base body 1113 and a telescopic part 1114; the base body 1113 comprises a recessed part, one end of the telescopic part 1114 is fixedly connected to the bottom wall of the recessed part, and the other end of the telescopic part 1114 is fixedly connected to the wire harness fixing part 1112. When the fixing main body part 1111 is connected to the plurality of wire harness fixing parts 1112, the fixing main body part 1111 comprises the base body 1113 and the plurality of telescopic parts 1114; the base body 1113 comprises a plurality of recessed parts, one end of each telescopic part 1114 is fixedly connected to the bottom wall of each recessed part, and the other end of each telescopic part 1114 is fixedly connected to one end of each wire harness fixing part 1112; when each telescopic part 1114 is extended, a gap is formed between the other end of each wire harness fixing part 1112 and the fixing main body part 1111, and the gap can be used for the wire harness 20 to be detected to enter; when each telescopic part 1114 is compressed, the other end of each wire harness fixing part 1112 cooperates with the fixing main body part 1111 to fix the wire harness 20 to be detected.

[0103] In some embodiments, the telescopic members 1114 can include hydraulic telescopic rods.

[0104] In some embodiments, the number of the concave portions included in the fixed main body portion 1111 and the number of the telescopic members 1114 can both be 2×M times of the maximum number of the wires 21 included in the wire harness that can be detected by the wire harness detection device 12, M is an integer greater than or equal to 1, for example, M is 1, 2 or 3, etc., and one end of each telescopic member 1114 is fixed to the bottom wall of each concave portion. For example, when the maximum number of the wires 21 included in the wire harness that can be detected by the wire harness detection device 12 is 4, and M is 1, the number of the concave portions and the number of the telescopic members 1114 are both 8, and the 8 telescopic members 1114 are also connected to the 8 wire harness fixing members 1112, and the 8 wire harness fixing members 1112 form 4 pairs of fixing members, each pair of fixing members is used to fix one wire 21 in the wire harness under test 20.

[0105] In the technical scheme of the embodiments of the present application, the size of the gap between the wire harness fixing member 1112 and the fixed main body portion 1111 can be adjusted by the extension and compression of the telescopic member 1114, thereby improving the efficiency of the wire harness fixing assembly 111 in fixing the wire harness under test 20.

[0106] Continuing to refer to Figure 11 , the wire harness fixing member 1112 includes a plug-in portion 1115 and a bent portion 1116 connected to the plug-in portion 1115; the plug-in portion 1115 is fixedly connected to the fixed main body portion 1111, and the bent portion 1116 is on the side of the plug-in portion 1115 away from the main body portion; the bent portion 1116 is bent towards the side close to the fixed main body portion 1111, and the end of the bent portion 1116 away from the plug-in portion 1115 is chamfered with a circular arc.

[0107] The wire harness fixing member 1112 in the embodiments of the present application is opened when it is subjected to an upward force, so as to facilitate the wires 21 in the wire harness under test 20 to enter the wire harness fixing assembly 111, and can fix the wires 21 in combination with the fixed main body portion 1111 when it is subjected to a downward force. In some embodiments, the end of the bent portion 1116 away from the plug-in portion 1115 is a pointed portion, which is chamfered with a circular arc, which can prevent the outer insulating protective layer of the wire harness under test 20 from being pierced. In some embodiments, the cross-sectional area of the end of the bent portion 1116 away from the plug-in portion 1115 is smaller than the cross-sectional area of the end of the bent portion 1116 close to the plug-in portion 1115. For example, the cross-sectional area gradually decreases from the end of the bent portion 1116 close to the plug-in portion 1115 to the end of the bent portion 1116 away from the plug-in portion 1115.

[0108] In the technical scheme of the embodiment of the application, the bending portion 1116 is bent towards one side close to the fixed main body portion 1111, the bending portion 1116 can limit the to-be-tested wire harness 20, the situation that the to-be-tested wire harness 20 falls off from the wire harness fixing assembly 111 is reduced, the reliability of the wire harness fixing assembly 111 in fixing the to-be-tested wire harness 20 is improved, and the end of the bending portion 1116 away from the plug-in portion 1115 is circularly chamfered, so that the risk of damage to the to-be-tested wire harness 20 is reduced.

[0109] Figure 12 A structure schematic diagram of a wire harness detection system provided by the seventh embodiment is shown in FIG. 12. Figure 12 As shown in FIG. 12, the wire harness detection system 10 includes a test bench 11, a switch module 1221, a wire harness detector 1225, and a controller 1226 (for example, a central processing unit).

[0110] The to-be-tested wire harness 20 fixed by the test bench 11 is connected with the switch module 1221, the switch module 1221 is further connected with the wire harness detector 1225, the wire harness detector 1225 is connected with the controller 1226, and the controller 1226 is connected with the test bench 11.

[0111] In combination with Figure 8 and Figure 10 , the wire harness detection system 10 includes: the wire harness detection system 10 includes: the test bench 11, the adapter 13, the flexible circuit board 121, the switch module 1221, the wire harness detector 1225, and the controller 1226.

[0112] The test bench 11 includes a wire harness fixing assembly 111 and a vibration table 112, the wire harness fixing assembly 111 includes a plurality of wire harness fixing pieces 1112, and the plurality of wire harness fixing pieces 1112 are used for fixing the wires 21 in the to-be-tested wire harness 20.

[0113] One end of the flexible circuit board 121 is fixed to the vibration table 112, and the other end of the flexible circuit board 121 is fixed to the switch module 1221. The connecting portion of the to-be-tested wire harness 20 is connected to one end of the flexible circuit board 121 through the adapter 13, and the other end of the flexible circuit board 121 is connected to the switch module 1221.

[0114] The switch module 1221 includes a decoder 1224 and a plurality of switch devices 1223, the other end of the flexible circuit board 121 is connected to the first end of the plurality of switch devices 1223, the second end of the plurality of switch devices 1223 is connected to the input end of the wire harness detector 1225, the output end of the wire harness detector 1225 is connected to the controller 1226, the controller 1226 is further connected to the input end of the decoder 1224, the output end of the decoder 1224 is connected to the control end of the plurality of switch devices 1223, and the controller 1226 is further connected to the vibration table 112.

[0115] Figure 13The structure of the adapter connected with the flexible circuit board is shown in the structure diagram provided by some embodiments, which is described in combination with reference to Figure 4 , Figure 9 and Figure 13 One end of the flexible circuit board 121 has a clamping groove 1213, and the adapter 13 can be detachably connected with the flexible circuit board 121 through the clamping groove 1213. The plurality of wire harness connection terminals 1313 of the adapter 13 can be connected with the plurality of conductive terminals 24 of the wire harness 20 to be tested respectively. The other end of the flexible circuit board 121 has a plurality of output terminals 1212. Each wire harness connection terminal 1313 is connected with a corresponding input terminal. The plurality of output terminals 1212 can be connected with the plurality of switch devices 1224 respectively, or the output terminals 1212 corresponding to the connection part of the wire harness 20 in the plurality of output terminals 1212 can be connected with the plurality of switch devices 1224 respectively. In some embodiments, one end of the flexible circuit board 121 can be fixed to the test rack 11 through a plurality of test fixtures 14. The test fixture 14 is arranged close to one end of the flexible circuit board 121. For example, the test fixture 14 can be a screw or a buckle, etc. The test fixture 14 can be fixed to the flexible circuit board 121 by adhesion, clamping or other methods. The test fixture 14 is included in the wire harness detection system 10.

[0116] In combination with reference to Figure 4 , Figure 8 , Figure 9 and Figure 13 In some embodiments, the wire harness detection system 10 uses a time domain reflectometer as the wire harness detector 1225. This instrument can detect the transmission impedance of the wire harness and effectively check the continuity of the wire harness. The two ends of the wire harness 20 to be tested are fixed by using the flexible circuit board 121, and the wire harness 20 to be tested is fastened by using the wire harness fixing assembly 111. The vibration table 112 is arranged below the wire harness fixing assembly 111. In this way, the impedance continuity of the wire harness can be measured, and the specific problem position can be detected. At the same time, the vibration experiment can be directly carried out, the impedance condition in the experiment process can be monitored, and it can be judged whether there is a defect in the crimping and matching interface. The crimping interface is the connection interface of the wire 21 in the wire harness 20 and the first connection part 22 and the second connection part 23. The matching interface is the connection interface of the first connection part 22 and the second connection part 23 and other components (such as 13, the adapter). The flexible circuit board 121 can effectively isolate the influence of the vibration table 112 frame on the switch device 1224 and the wire harness detector 1225, and prevent detection errors caused by vibration.

[0117] In some embodiments, an optical coupling isolation device or an optical MOS isolation device is used as the core device of the switch device 1224. In this way, the surge introduced by the closing / opening of the switch side is reduced.

[0118] In some embodiments, a chip such as the decoder 1224 is used as a control switch device. In this way, the number of ports required for the control switch device 1224 is reduced.

[0119] In some embodiments, the plurality of conductive lines of the flexible circuit board 121 are connected to the plurality of switch devices 1223, respectively, and the number of conductive lines of the flexible circuit board 121 is the maximum number of conductive wires 21 included in the wire harness that the wire harness detection device 12 can detect, so that the wire harness detection device 12 can detect the wire harness with the maximum number of conductive wires 21 or the wire harness with less than the maximum number of conductive wires 21. In this way, the versatility can be greatly improved, and a variety of products can be compatible.

[0120] An optical coupling isolation device is an electrical-to-optical-to-electrical converter that uses light as a medium to transmit electrical signals. It consists of a light-emitting source and a light receiver, which are assembled in the same sealed housing and isolated from each other by a transparent insulator. The pin of the light-emitting source is the input end, and the pin of the light receiver is the output end. Common light-emitting sources are light-emitting diodes, and light receivers are photodiodes or photosensitive transistors, etc.

[0121] The switch device 1224 includes a switch driving unit (i.e., the decoder 1224) and a switch control unit (i.e., the plurality of switch devices 1223). The switch driving unit is a control circuit of the controllable switch, responsible for closing or turning off the controllable switch. The switch control unit obtains the signal output by the controller 1226, decodes it into the corresponding control signal, and outputs it to the switch device 1223.

[0122] The decoder 1224 is a kind of multiple-input multiple-output combination logic circuit device, which can include variable decoding and display decoding. The variable decoder 1224 is generally a device that converts a small number of inputs into a larger number of outputs, and common examples include n-line to 2^n-line decoding and 8421 BCD code decoding, where n is an integer greater than or equal to 1; the display decoder 1224 is used to convert binary numbers into corresponding seven-segment codes, which can be divided into two types: driving light-emitting diodes (LED) and driving liquid crystal displays (LCD).

[0123] Time domain reflectometry (TDR) is a radar detection technology. It was originally used in the communication industry to detect the location of a broken cable, hence the name cable detector.

[0124] The adapter 13 includes a slide rail (not shown in the figure), a fastener (not shown in the figure), and a conductive groove (not shown in the figure), and different adapters 13 can be selected according to the type of the wire harness 20 to be tested. The slide rail of the adapter 13 is matched with the slider of the flexible circuit board 121, the circuit connection terminal 1321 in the conductive groove of the adapter 13 is connected with the access terminal 1211 of the flexible circuit board 121, and the adapter 13 can further include a fastener for fastening the connection between the adapter 13 and the flexible circuit board 121. The detection of different types of wire harnesses 20 to be tested can be performed by using the same set of wire harness detection system 10. Meanwhile, the flexible circuit board 121 can effectively isolate the influence of the vibration test on the switch module 1221.

[0125] The switch module 1221 mainly uses an optical coupling, an optical MOS, etc. as an isolation switch device 1223, and the control end thereof is connected to a decoder 1224, and the other end of the decoder 1224 is connected to a controller 1226. Illustratively, the decoder 1224 can translate binary code into decimal code, and control the corresponding switch to be turned on, thereby effectively reducing the number of pins of the controller 1226. The switch module 1221 can connect the wire harness 20 to be tested to a wire harness detector 1225, and connect the communication line of the wire harness detector 1225 to the controller 1226. Illustratively, the communication line can use a universal serial bus (USB), a network port, an optical fiber, or an RS485 line, etc.

[0126] The switch module 1221 is controlled by the decoder 1224. The controller 1226 controls the decoder 1224, and the decoder 1224 controls the opening of the detection channel by the switch device 1223 to perform related detection on the wire harness 20 to be tested. In some embodiments, the decoder 1224 in the switch module 1221 can include a plurality of decoding units to expand the use scenario of the wire harness detector 1225.

[0127] The wire harness detector 1225 is a time domain reflectometer, a six-bit half multimeter, or an oscilloscope, etc. The wire harness detector 1225 communicates with the controller 1226 to realize automatic transmission of detection data.

[0128] The time domain reflectometer (TDR) measures the impedance of the wire harness. When a signal is transmitted in a transmission path, a part of the signal will be reflected when the impedance changes in the transmission path, and another part of the signal will continue to be transmitted along the transmission path. The TDR calculates the change of impedance by measuring the voltage amplitude of the reflected wave; at the same time, as long as the time value from the reflection point to the signal output point is measured, the position of the impedance change point in the transmission path can be calculated.

[0129] The six-bit universal meter detects the impedance between the wire harnesses, collects the resistance of the wire harnesses at both ends, and returns the collected values through the communication interface. The controller 1226 judges and analyzes the values according to the threshold setting.

[0130] The oscilloscope detects the signal waveform of the wire harness and the signal waveform of the wire harness during the vibration test, realizes waveform capture of the measured wire harness, and the controller 1226 compares the measured waveform to determine whether it is abnormal.

[0131] The wire harness detection system 10 provided by the embodiment of the application includes a wire harness fixing assembly 111, a vibration table 112, a switch module 1221, a wire harness detector 1225, and a controller 1226. The wire harness fixing assembly 111 can fix the wire harness 20 to be measured, preventing the wire harness 20 to be measured from moving randomly during the detection process. The vibration table 112 is placed below the wire harness fixing assembly 111, and the switch module 1221 is connected to the controller 1226 through the wire harness detector 1225. The vibration experiment in the embodiment of the application can be a national standard experiment (i.e., an experiment performed under the vibration conditions corresponding to the national standard), or can be a certain experiment with weakened intensity based on the national standard and reliability theory to stimulate the early failure of the wire harness 20 to be measured. The vibration table 112 can be selected according to the actual situation, and can meet the needs of XYZ three-axis vibration experiments. For example, the vibration test requirements of the battery pack can refer to the relevant standards. The wire harness fixing assembly 111 is a movable wire harness fixing piece 1112, which can be adjusted in position and fastened according to the length and thickness of the wire harness. For example, two wire harness fixing pieces 1112 fix a wire 21, if the distance between the two wire harness fixing pieces 1112 is short, a shorter wire 21 can be fixed, and if the distance between the two wire harness fixing pieces 1112 is long, a longer wire 21 can be fixed.

[0132] For example, Tables 1 to 3 are vibration test conditions of M1 type automobiles, N1 type automobile vehicle battery packs or systems in some embodiments, which can also be applied to wire harness detection. Among them, M1 type automobile is a passenger vehicle with no more than 9 seats including the driver's seat, and N1 type automobile is a cargo vehicle with a maximum design total mass of not more than 3500 kilograms.

[0133] In Table 1, the correspondence between the frequency and the power spectrum density (PSD) of the xyz three-axis is shown, as shown in Table 1:

[0134] Table 1

[0135]

[0136] Exemplarily, Table 1 is a corresponding relationship of random vibration, and each direction test time is 12 hours. Each character in A1 to A24 in Table 1 represents a numerical value or null. The content represented by each character in A1 to A24 in Table 1 can be the content in the vibration condition corresponding to the national standard, or the content after weakening the vibration condition corresponding to the national standard.

[0137] In Table 2, a corresponding relationship between the root mean square (RMS) and the gravity acceleration of the xyz three axes is shown, as shown in Table 2:

[0138] Table 2

[0139]

[0140] Exemplarily, Table 2 is a corresponding relationship of random vibration, and each direction test time is 12 hours. Each character in B1 to B3 in Table 2 represents a numerical value or null. The content represented by each character in B1 to B3 in Table 2 can be the content in the vibration condition corresponding to the national standard, or the content after weakening the vibration condition corresponding to the national standard.

[0141] In Table 3, a corresponding relationship between the frequency and the fixed frequency amplitude of the xyz three axes is shown, as shown in Table 3:

[0142] Table 3

[0143]

[0144] Exemplarily, Table 3 is a corresponding relationship of sine fixed frequency vibration, and each direction test time is 1 hour. Each character in C1 to C3 in Table 3 represents a numerical value or null. The content represented by each character in C1 to C3 in Table 3 can be the content in the vibration condition corresponding to the national standard, or the content after weakening the vibration condition corresponding to the national standard.

[0145] The test process of the present application is as follows: first, the tester selects a specification matching adapter 13 according to the wire harness 20 to be tested, connects the adapter 13 with the flexible circuit board 121, fixes the wire harness 20 to be tested on the test bench 11, and fixes the two ends of the wire harness 20 to be tested with the adapter 13. The controller 1226 loads the preset test scheme and controls the wire harness detector 1225 to perform corresponding tests. During the test process, the controller 1226 controls the on-off of different switch devices 1223 to enable the wire harness detector 1225 to test different wires 21 in the wire harness 20 to be tested. The controller 1226 obtains the test results from the wire harness detector 1225 and presents the test results. In some embodiments, the controller 1226 or the tester can compare the test results with the preset threshold value, output the comparison results to the report template, and form a test report for the wire harness 20 to be tested.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wire harness detection system, characterized in that: The wire harness detection system includes a test bench, an adapter of at least one specification and a wire harness detection device; the test bench includes a wire harness fixing assembly; The wiring harness to be tested is detachably fixed on the test bench through the wiring harness fixing assembly, and both ends of the wiring harness to be tested are detachably connected to the wiring harness detection equipment through an adapter with matching specifications.

2. The wire harness detection system according to claim 1, characterized in that: Each specification of the adapter includes a wiring harness plug-in portion and a circuit plug-in portion connected to the wiring harness plug-in portion; The wiring harness plug-in portion is used to connect the two ends of the wiring harness to be tested; The circuit plug-in portion is used to connect the wire harness detection equipment.

3. The wire harness detection system according to claim 2, characterized in that: The wiring harness plug-in portion includes at least one wiring harness connection terminal, and the port of the wiring harness to be tested includes at least one conductive terminal; Each harness connection terminal in the harness plug-in portion is connected to a conductive terminal in the port of the harness to be tested.

4. The wire harness detection system according to claim 2, characterized in that: The circuit plug-in portion includes at least one circuit connection terminal, and the wiring harness detection device is provided with at least one access terminal; Each circuit connection terminal in the circuit plug-in portion is correspondingly connected to an access terminal in the wire harness detection device.

5. The wire harness detection system according to claim 4, characterized in that: The circuit plug-in portion further includes a slide rail, and the wire harness detection device further includes a sliding member, which can slide along the slide rail.

6. The wire harness detection system according to any one of claims 1 to 5, characterized in that: The wire harness detection device includes a flexible circuit board and a wire harness detection device; The two ends of the wiring harness to be tested are detachably connected to one end of the flexible circuit board through the adapter with matching specifications, and the other end of the flexible circuit board is connected to the wiring harness detection device; One end of the flexible circuit board is also fixed to the test bench.

7. The wire harness detection system according to claim 6, characterized in that: The wiring harness detection device includes a switch module and a wiring harness detection module, wherein the switch module includes a plurality of switch devices; The first ends of the plurality of switch devices are all connected to the other end of the flexible circuit board, and the second ends of the plurality of switch devices are all connected to the wire harness detection module.

8. The wire harness detection system according to claim 7, characterized in that: The switch module also includes a decoder; The input end of the decoder is connected to the harness detection module, and the output end of the decoder is connected to the control ends of the plurality of switch devices.

9. The wire harness detection system according to claim 7, characterized in that: The wiring harness detection module includes a wiring harness detector and a controller; The second ends of the plurality of switch devices are all connected to the input end of the wire harness detector, and the output end of the wire harness detector is connected to the controller. The controller is also connected to the control terminals of the plurality of switching devices.

10. The wire harness detection system according to claim 7, characterized in that: The flexible circuit board includes a plurality of conductive circuits, and each of the switch devices is correspondingly connected to each of the conductive circuits in the flexible circuit board.

11. The wire harness detection system according to any one of claims 1 to 5, characterized in that: The test bench includes the wiring harness fixing assembly and a vibration table; The wire harness fixing assembly includes a fixing main body portion arranged on the vibration platform and a plurality of wire harness fixing members arranged on the fixing main body portion, and each of the wire harness fixing members is connected to the fixing main body portion.

12. The wire harness detection system according to claim 11, characterized in that: The fixed main body includes a base and a plurality of telescopic members; the base includes a plurality of recessed portions, one end of each telescopic member is fixedly connected to the bottom wall of each recessed portion, and the other end of each telescopic member is fixedly connected to one end of each wiring harness fixing member; When each of the telescopic parts is extended, the gap formed between the other end of each of the wire harness fixing parts and the fixed main body allows the wire harness to be tested to enter. When each of the telescopic parts is compressed, the other end of each of the wire harness fixing parts cooperates with the fixed main body to fix the wire harness to be tested.

13. The wire harness detection system according to claim 11, characterized in that: Each of the wiring harness fixing members includes a plug-in portion and a bending portion connected to the plug-in portion; the plug-in portion is fixedly connected to the fixed main body portion, and the bending portion is on a side of the plug-in portion away from the main body portion; The bent portion is bent toward a side close to the fixed main body portion, and an end of the bent portion away from the plug-in portion is chamfered in an arc shape.

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