CN221174924U - Multi-core wire harness conductivity detection device - Google Patents
Multi-core wire harness conductivity detection device Download PDFInfo
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- CN221174924U CN221174924U CN202323204810.2U CN202323204810U CN221174924U CN 221174924 U CN221174924 U CN 221174924U CN 202323204810 U CN202323204810 U CN 202323204810U CN 221174924 U CN221174924 U CN 221174924U
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Abstract
The utility model relates to a multi-core wire harness conductivity detection device, which comprises a test module and a wire harness switching module, wherein the test module comprises a main control chip, a JTAG programming interface, a driving output module, a detection input module and a display module; the wire harness switching module comprises a wire harness interface and a board-to-board interface, the driving output module is used for sequentially providing high-level driving signals for each pin of the wire harness interface, and the detection input module is used for receiving response signals of the wire harness interface and inputting the response signals to the main control chip; the main control chip is also used for judging whether the multi-core wire corresponding to the wire harness interface is correctly conducted or not according to the response signals. The multi-core wire harness conductivity detection device designed by the utility model realizes the universal detection device which can be quickly adapted to different types of wire harnesses by combining the test module and the wire harness switching module which are in modularized design, so that the wire harnesses are detected in batches and automatically, the detection efficiency is greatly improved, and the detection cost is reduced.
Description
Technical Field
The utility model relates to the technical field of wire detection, in particular to a multi-core wire harness conductivity detection device.
Background
In the prior art, with the development of automobile electronic technology, modern automobiles adopt a large number of electronic control systems and electrical equipment, and the electronic control systems and the electrical equipment are connected through complex automobile electrical harnesses, so that various functions of the automobiles are realized. The automotive electrical harness is directly related to the normal operation of the automotive electrical system, and good electrical conductivity is critical.
The traditional automobile electrical harness detection mode mainly adopts a manual spot measurement method, and a worker uses a universal meter or an oscilloscope to check whether all wires of the harness are well conducted one by one. The detection mode is low in efficiency, and the detection difficulty is increased by disassembling and connecting complex wire harness joints. Meanwhile, long-time manual detection is easy to generate omission and misoperation.
Disclosure of Invention
In order to solve the problems, the utility model provides the multi-core wire harness conductivity detection device which can carry out batch and automatic detection on the wire harnesses, greatly improves the detection efficiency, reduces the detection cost, reduces the manual operation and avoids detection errors caused by misoperation in a fatigue state.
In order to achieve the purpose, the multi-core wire harness conductivity detection device comprises a test module and a wire harness switching module, wherein the test module comprises a main control chip, a JTAG programming interface, a driving output module, a detection input module and a display module; the wiring harness switching module comprises a wiring harness interface and a board-to-board interface, the main control chip is used for controlling the work of the whole detection device, and the JTAG programming interface is connected with the main control chip and used for programming the main control chip to adapt to different wiring harness models; the driving output module is connected between the main control chip and the wire harness interface, and the detection input module is connected between the main control chip and the board-to-board interface; the driving output module is used for sequentially providing high-level driving signals for each pin of the wire harness interface, and the detection input module is used for receiving response signals of the wire harness interface and inputting the response signals to the main control chip; the main control chip is also used for judging whether the multi-core wire corresponding to the wire harness interface is correctly conducted or not according to the response signal; the display module is connected with the main control chip and is used for displaying the detection state and the final detection result of the main control chip in real time.
In order to prevent crosstalk between pins of the same network, the harness interfaces are provided with a plurality of diodes which are used for isolating signals between different harness interfaces are connected in series on a common line between adjacent harness interfaces.
To increase the versatility of the interface, the JTAG programming interface has a SWD interface.
In order to improve visibility and usability, the display module adopts an LCD display screen.
For ease of access and replacement, the board-to-board interface is a 2.54mm board-to-board connector.
For high-efficiency performance, the master control chip adopts STM32F1 series chips.
Further, the driving output module adopts a 74HC595 chip.
Further, the detection input module adopts a 74HC165 chip.
The multi-core wire harness conductivity detection device designed by the utility model realizes the universal detection device which can be quickly adapted to different types of wire harnesses by combining the test module and the wire harness switching module which are in modularized design, so that the wire harnesses are detected in batches and automatically, the detection efficiency is greatly improved, and the detection cost is reduced. Meanwhile, manual operation is reduced, and detection errors caused by misoperation in a fatigue state are avoided.
Drawings
FIG. 1 is a block diagram showing the construction of embodiment 1 of the present utility model;
FIG. 2 is a block diagram showing the structure of a test module in embodiment 1 of the present utility model;
Fig. 3 is a circuit diagram of a test module in embodiment 1 of the present utility model.
Wherein: the testing device comprises a testing module 1, a wire harness switching module 2, a main control chip 11, a JTAG programming interface 12, a driving output module 13, a detection input module 14, a display module 15, a wire harness interface 21 and a board-to-board interface 22.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Example 1.
As shown in fig. 1-3, the multi-core wire harness conductivity detection device described in this embodiment includes a test module 1 and a wire harness switching module 2, where the test module 1 includes a main control chip 11, a JTAG programming interface 12, a driving output module 13, a detection input module 14 and a display module 15; the wiring harness switching module 2 comprises a wiring harness interface 21 and a board-to-board interface 22, the main control chip 11 is used for controlling the work of the whole detection device, and the JTAG programming interface 12 is connected with the main control chip 11 and used for programming the main control chip 11 to adapt to different wiring harness models; the driving output module 13 is connected between the main control chip 11 and the wire harness interface 21, and the detection input module 14 is connected between the main control chip 11 and the board-to-board interface 22; the driving output module 13 is configured to sequentially provide a high-level driving signal to each pin of the harness interface 21, and the detection input module 14 is configured to receive a response signal of the harness interface 21 and input the response signal to the main control chip 11; the main control chip 11 is further configured to determine whether the multicore wire corresponding to the harness interface 21 is correctly turned on according to the response signal; the display module 15 is connected with the main control chip 11, and is used for displaying the detection state and the final detection result of the main control chip 11 in real time. In this embodiment, as shown in fig. 3, the main control chip 11 adopts an STM32F1 series chip, the driving output module 13 adopts a plurality of cascaded 74HC595 chips, and the detection input module 14 adopts a plurality of cascaded 74HC165 chips. When the detection device is in operation, a multi-core wire harness to be detected is connected to the detection device through the wire harness interface 21 and the board-to-board interface 22 of the wire harness switching module 2, the main control chip 11 sends control signals to the driving output module 13, the driving output module 13 sequentially sends high-level driving signals to each pin of the wire harness interface 21, the wire harness interface 21 receives the driving signals and then transmits the driving signals to the other end of the wire harness through an internal wire to form response signals to return, the detection input module 14 receives the response signals returned by the wire harness interface 21 and inputs the response signals to the main control chip 11, the main control chip 11 analyzes the response signals to judge whether each pin of the wire harness interface 21 is correctly conducted or not, and conduction detection results of the wire harness are obtained, so that detection states and final results are displayed in real time through the display module 15. In addition, in this embodiment, the JTAG programming interface 12 provides a standardized interface protocol, which allows the user to write the detection logic programs adapted to different wire harnesses into the main control chip 11 by writing programming codes, so as to implement the adaptation to different wire harnesses, and expand the versatility and application range of the whole detection device. By utilizing the structural design, the automatic conductivity detection of the multi-core wire harnesses of different types is realized, the detection efficiency is greatly improved, and the risk of manual operation detection errors is reduced.
In some embodiments, in order to prevent crosstalk between pins of the same network, the harness interfaces 21 are provided in plurality, and diodes for isolating signals between different harness interfaces 21 are connected in series on a common line between adjacent harness interfaces 21. In this way, utilizing the reverse polarity characteristics of the diode (not shown) allows signals to be transmitted in one direction and blocked in the other, which means that signals from one harness interface 21 will not propagate to an adjacent harness interface 21, thereby effectively isolating signals between different harnesses.
In some embodiments, the JTAG programming interface 12 has a SWD interface in order to increase the versatility of the interface. The main control chip 11 is connected with a JTAG programming interface 12, which has a SWD interface, so that the main control chip 11 can be selectively programmed by the SWD interface or the JTAG programming interface 12 to adapt to different types of wire harnesses, which enables the detection device to flexibly cope with various wire harness types without physically replacing or reconfiguring the interface.
In some embodiments, the display module 15 employs an LCD display screen for improved visibility and ease of use. The LCD display screen can display various information such as text, icons, numbers, graphics and the like, so that the LCD display screen is very suitable for displaying different types of data and information under different conditions so as to meet different user requirements.
In some embodiments, the board-to-board interface 22 is a 2.54mm board-to-board connector for ease of access and replacement. The 2.54mm board-to-board connector typically has a robust construction capable of withstanding repeated connection and disconnection, which durability is critical to the reliability and longevity of the device, particularly in automotive electrical harness detection devices and other such field applications where frequent use is required.
The multicore pencil conductivity detection device that this embodiment provided combines together through the test module that adopts modularized design and pencil switching module, has realized the general detection device of different model pencil of quick adaptation to carry out batchization and automated detection to the pencil, improved detection efficiency by a wide margin, reduced detection cost. Meanwhile, manual operation is reduced, and detection errors caused by misoperation in a fatigue state are avoided.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The multi-core wire harness conductivity detection device comprises a test module (1) and a wire harness switching module (2), and is characterized in that the test module (1) comprises a main control chip (11), a JTAG programming interface (12), a drive output module (13), a detection input module (14) and a display module (15); the wiring harness switching module (2) comprises a wiring harness interface (21) and a board-to-board interface (22), the main control chip (11) is used for controlling the work of the whole detection device, and the JTAG programming interface (12) is connected with the main control chip (11) and used for programming the main control chip (11) to adapt to different wiring harness models; the driving output module (13) is connected between the main control chip (11) and the wire harness interface (21), and the detection input module (14) is connected between the main control chip (11) and the board-to-board interface (22); the driving output module (13) is used for sequentially providing high-level driving signals for each pin of the wire harness interface (21), and the detection input module (14) is used for receiving response signals of the wire harness interface (21) and inputting the response signals to the main control chip (11); the main control chip (11) is also used for judging whether the multi-core wire corresponding to the wire harness interface (21) is correctly conducted or not according to the response signal; the display module (15) is connected with the main control chip (11) and is used for displaying the detection state and the final detection result of the main control chip (11) in real time.
2. The multi-core wire harness conductivity detection device according to claim 1, wherein a plurality of wire harness interfaces (21) are provided, and diodes for isolating signals between different wire harness interfaces (21) are connected in series on a common line between adjacent wire harness interfaces (21).
3. The multi-core wire harness continuity testing device of claim 1, wherein the JTAG programming interface (12) has a SWD interface.
4. The multi-core wire harness continuity testing device according to claim 1, characterized in that the display module (15) employs an LCD display screen.
5. The multi-core wire harness continuity testing device of claim 1, wherein the board-to-board interface (22) is a 2.54mm board-to-board connector.
6. The multi-core wire harness conductivity detection device according to claim 1, wherein the main control chip (11) is an STM32F1 series chip.
7. The multi-core harness continuity testing device according to claim 1, characterized in that the drive output module (13) employs a 74HC595 chip.
8. The multi-core wire harness continuity testing device as recited in claim 1, wherein the test input module (14) employs a 74HC165 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323204810.2U CN221174924U (en) | 2023-11-27 | 2023-11-27 | Multi-core wire harness conductivity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323204810.2U CN221174924U (en) | 2023-11-27 | 2023-11-27 | Multi-core wire harness conductivity detection device |
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| Publication Number | Publication Date |
|---|---|
| CN221174924U true CN221174924U (en) | 2024-06-18 |
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|---|---|---|---|
| CN202323204810.2U Active CN221174924U (en) | 2023-11-27 | 2023-11-27 | Multi-core wire harness conductivity detection device |
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| CN (1) | CN221174924U (en) |
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2023
- 2023-11-27 CN CN202323204810.2U patent/CN221174924U/en active Active
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