CN219574242U - Wire harness inspection tool - Google Patents
Wire harness inspection tool Download PDFInfo
- Publication number
- CN219574242U CN219574242U CN202320214751.8U CN202320214751U CN219574242U CN 219574242 U CN219574242 U CN 219574242U CN 202320214751 U CN202320214751 U CN 202320214751U CN 219574242 U CN219574242 U CN 219574242U
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- Prior art keywords
- wire harness
- interface
- relay matrix
- board card
- oscilloscope
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to the technical field of wire harness inspection, in particular to a wire harness inspection tool which comprises a main control circuit, a universal meter, a relay matrix board card and an oscilloscope, wherein the driving end of the main control circuit is connected with the signal input end of the relay matrix board card, the probe interface of the relay matrix board card is respectively connected with the probe interface of the universal meter and the probe interface of the oscilloscope, and the wire harness interface of the relay matrix board card is connected with the interface of a wire harness to be detected. Compared with the prior art, the utility model designs the wire harness checking tool consisting of the main control circuit, the universal meter, the relay matrix board card and the oscilloscope, realizes the resistance and signal waveform test between any 2PIN, has faster and more accurate test, effectively improves the efficiency and meets a plurality of wire harness checking requirements.
Description
Technical Field
The utility model relates to the technical field of wire harness inspection, in particular to a wire harness inspection tool.
Background
In the wire harness inspection, the current test method is a manual test: impedance is measured by the wire harness, signals are collected by the oscilloscope one by one, and pictures and test data are manually filled into the report template.
The current testing method has a plurality of problems, and is specifically as follows:
1, the number of tools to be prepared is large and time-consuming. During testing, tools such as a universal meter, an oscilloscope, an adapter, an extension cord and the like are prepared. In particular, in the on-vehicle test, the oscilloscope cannot use an external power supply, only the oscilloscope with a battery can be selected, and in addition, for the measurement of milliohm level, the test value of the universal meter is unreliable, and a milliohm meter needs to be prepared, so that a long time is required to prepare a test tool before the test, and the node for the test is affected.
2, the test efficiency is low. For resistance test, two PIN PINs of the adapter converter are needed to be measured manually by taking a universal meter, and due to the large test quantity, even if the test is performed by a skilled worker, more than 2 hours are needed, and for the single test, the test efficiency is extremely low, the task is heavy, and the humanization is extremely bad.
And 3, the accuracy and reliability of the test data are poor. Because the adapter converter is required to be connected during testing, the impedance of the wire harness of the adapter is introduced during testing, so that the actual value and the test value have certain deviation, the testing accuracy is influenced, meanwhile, the situation of poor contact exists when the multimeter is manually taken for testing, and the testing result is poor in reliability.
4, the waveform test safety is low. The waveform test needs to connect the probe of the oscilloscope to the PIN of the adapter converter through the banana line, so that the probe wire harness short circuit can be caused by moving the adapter or the oscilloscope during the test, the test result is influenced, the ECU is possibly damaged, and a certain safety risk exists.
Therefore, there is a need to design a reliable, safe, high-efficiency wire harness inspection tool that meets numerous wire harness inspection requirements.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a reliable, safe and high-efficiency wire harness checking tool so as to meet a plurality of wire harness checking requirements.
In order to achieve the above purpose, the utility model provides a wire harness inspection tool, which comprises a main control circuit, a multimeter, a relay matrix board card and an oscilloscope, wherein the driving end of the main control circuit is connected with the signal input end of the relay matrix board card, the probe interface of the relay matrix board card is respectively connected with the probe interface of the multimeter and the probe interface of the oscilloscope, and the wire harness interface of the relay matrix board card is connected with the interface of a wire harness to be detected.
Optionally, the main control circuit, the universal meter, the relay matrix board card and the oscilloscope are arranged in the aluminum box.
Optionally, a mobile power supply is further installed in the aluminum box, and an output end of the mobile power supply is connected with a power supply input end of the universal meter, a power supply input end of the relay matrix board card and a power supply input end of the oscilloscope respectively.
Optionally, the USB port of the main control circuit, the USB port of the universal meter, the USB port of the oscilloscope and the USB interface of the upper computer are connected by adopting a USB hub.
Optionally, the interface of the wire harness to be detected comprises a whole wire harness connector interface and an ECU connector interface, and the whole wire harness connector interface, the ECU connector interface and the wire harness interface of the relay matrix board are connected by a wire harness switching device.
Optionally, the model of the master control circuit is ST STM32F407.
Optionally, the universal meter is a USB high-precision universal meter, and the model is NI USB-4065.
Optionally, the type of the relay matrix board card is TE PB114005.
Optionally, the oscilloscope is a USB oscilloscope, and the model is PicoScope 3406D.
Optionally, the probe interface of the relay matrix board card is connected with the probe interface of the multimeter, and the probe interface of the relay matrix board card is connected with the probe interface of the oscilloscope in a four-wire system.
Compared with the prior art, the utility model designs the wire harness checking tool consisting of the main control circuit, the universal meter, the relay matrix board card and the oscilloscope, realizes the resistance and signal waveform test between any 2PIN, has faster and more accurate test, effectively improves the efficiency and meets a plurality of wire harness checking requirements.
Drawings
Fig. 1 is a system block diagram of the wire harness inspection tool of the present utility model.
Fig. 2 is a schematic diagram of wiring harness and relay matrix wiring of the present utility model.
Reference numerals illustrate: 1 is a main control circuit, 2 is a universal meter, 3 is a relay matrix board card, 4 is an oscilloscope, 5 is a mobile power supply, 6 is an aluminum box, 7 is a wire harness switching device, 8 is a USB hub, 9 is a whole wire harness connector interface, 10 is an ECU connector interface, 11 is 7 wire harness switching device PIN, and 31 is a relay matrix.
Description of the embodiments
The utility model will now be further described with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a wire harness checking tool, which comprises a main control circuit, a multimeter, a relay matrix board card and an oscilloscope, wherein a driving end of the main control circuit 1 is connected with a signal input end of the relay matrix board card 3, a probe interface of the relay matrix board card 3 is respectively connected with a probe interface of the multimeter 2 and a probe interface of the oscilloscope 4, and a wire harness interface of the relay matrix board card 3 is connected with an interface of a wire harness to be detected.
The main control circuit 1, the universal meter 2, the relay matrix board card 3 and the oscilloscope 4 are arranged in the aluminum box 6, and all equipment is integrated in the aluminum box 6, so that the preparation time of an inspection tool is shortened, and the inspection tool is convenient to carry.
And a mobile power supply 5 is further installed in the aluminum box 6, the output end of the mobile power supply 5 is respectively connected with the power supply input end of the universal meter 2, the power supply input end of the relay matrix board card 3 and the power supply input end of the oscilloscope 4, external power supply is not needed, and the whole vehicle wire harness test under any environment is convenient.
The USB port of the main control circuit 1, the USB port of the universal meter 2, the USB port of the oscilloscope 4 and the USB interface of the upper computer are connected by adopting a USB hub 8, so that the inspection tool can conveniently communicate with the upper computer.
The interface of the wire harness to be detected comprises a whole wire harness connector interface 9 and an ECU connector interface 10, and the whole wire harness connector interface 9, the ECU connector interface 10 and the wire harness interface of the relay matrix board card 3 are connected by adopting a wire harness switching device 7.
The model of the main control circuit 1 is ST STM32F407.
The universal meter 2 is a USB high-precision universal meter, and the model is NI USB-4065.
The type of the relay matrix board 3 is TE PB114005.
The oscilloscope 4 is a USB oscilloscope, and the model is PicoScope 3406D.
The probe interface of the relay matrix board card 3 is connected with the probe interface of the universal meter 2 in a four-wire system, and 1 path of external resistor test channels are reserved to provide high-precision measurement. The probe interface of the relay matrix board card 3 is connected with the probe interface of the oscilloscope 4 in a four-wire system, and 1 path of externally connected waveform test channels are reserved for high-voltage signal measurement.
The utility model designs a wire harness checking tool consisting of a main control circuit, a universal meter, a relay matrix board card and an oscilloscope, realizes the resistance and signal waveform test between any 2PIN, has faster and more accurate test, effectively improves the efficiency and meets a plurality of wire harness checking requirements.
Examples
The utility model integrates all the equipment required by high-speed resistance measurement and signal waveform test into an integrated tool, and connects the whole vehicle wire harness connector interface 9, the ECU connector interface 10 with an inspection tool through the wire harness switching device 7; the test content is operated by the upper computer software through the connection of the USB and the upper computer.
High-speed measurement of wire harness resistance: the universal meter 2 adopts NI USB-4065, and can realize high-speed and accurate measurement of the resistance of any two Pin pins by configuring and calling different relay matrixes. 200 PIN is supported at maximum, the test range is 0.1 milliohm-10 megaohms within 50ms of single measurement time, the test error is less than +/-1%, and the universal meter 2 can automatically switch the measuring range according to different resistance values.
The specific steps of high-speed measurement of the wire harness resistance are as follows: and step 1, configuring a test sequence by the upper computer. Step 2, the test sequence is transferred to the main control circuit 1 through USB. And 3, the main control circuit 1 calls the relay matrix board card 3 according to the test sequence, and switches the test PIN PINs to 2 target test Pin PINs. And 4, the universal meter 2 collects the resistances among the 2PIN PINs and feeds the collected resistances back to the upper computer through the USB. And step 5, the upper computer performs test analysis according to a preset threshold value, judges whether the threshold value is exceeded, and determines whether to alarm.
Signal waveform testing: the oscillograph 4 adopts PicoScope 3406D, the relay matrix board 3 can collect waveforms of at least 40 Pin, supports simultaneous collection of any 4 paths of signals, can realize single-time edge trigger test, delay test, short-time data recording, real-time analysis and the like of voltage/current, has frequency sampling precision of 10ns and voltage sampling precision of 1mV, and can configure different oscillograph interfaces, amplitude and time parameters according to actual signal types. And during signal acquisition, the equipment is high-impedance, and no interference is caused to the controller.
The specific steps of the signal waveform test are as follows: step 1, configuring a test sequence, a signal waveform triggering mode, an amplitude value, a time parameter and the like on an upper computer. Step 2, the test sequence is transferred to the main control circuit 1 through USB. And 3, the main control circuit 1 calls the relay matrix board card 3 according to the test sequence, and switches the test PIN needle to the target test Pin. And 4, acquiring voltage or current signals of the PIN PIN by the oscilloscope 4, and feeding the acquired signals back to the upper computer through the USB. And 5, testing and analyzing by the upper computer according to a preset threshold value, judging whether the waveform is correct, whether the signal amplitude exceeds the limit, and determining whether to alarm.
If necessary, the test template can be configured in the upper computer software in advance, and the test report is printed after the results of the high-speed resistance measurement and the signal waveform test are judged according to the test standard.
Referring to FIG. 2, the M+, M-, S+, S-probe interface of multimeter 2 can be switched by relay matrix 31 to any 7 harness adapter PIN11 for resistance testing between any two PINs.
The CH1, CH2, CH3, CH4 probe interfaces of the oscilloscope 4 can be switched to any wire harness PIN11 through the relay matrix 31, and voltage test between any two PINs is performed.
The switching of the relay matrix 31 can be configured by the upper computer software, and the user can customize the settings.
Claims (10)
1. The utility model provides a pencil inspection tool, includes master control circuit, universal meter, relay matrix integrated circuit board, oscilloscope, its characterized in that: the driving end of the main control circuit (1) is connected with the signal input end of the relay matrix board card (3), the probe interface of the relay matrix board card (3) is respectively connected with the probe interface of the universal meter (2) and the probe interface of the oscilloscope (4), and the wire harness interface of the relay matrix board card (3) is connected with the interface of the wire harness to be detected.
2. The wire harness inspection tool as claimed in claim 1, wherein: the master control circuit (1), the universal meter (2), the relay matrix board card (3) and the oscilloscope (4) are arranged in the aluminum box (6).
3. The wire harness inspection tool as claimed in claim 2, wherein: the aluminum box (6) is internally provided with a mobile power supply (5), and the output end of the mobile power supply (5) is respectively connected with the power supply input end of the universal meter (2), the power supply input end of the relay matrix board card (3) and the power supply input end of the oscilloscope (4).
4. The wire harness inspection tool as claimed in claim 1, wherein: the USB port of the main control circuit (1), the USB port of the universal meter (2), the USB port of the oscilloscope (4) and the USB interface of the upper computer are connected by adopting a USB concentrator (8).
5. The wire harness inspection tool as claimed in claim 1, wherein: the interface of the wire harness to be detected comprises a whole wire harness connector interface (9) and an ECU connector interface (10), wherein the whole wire harness connector interface (9), the ECU connector interface (10) and the wire harness interface of the relay matrix board card (3) are connected by adopting a wire harness switching device (7).
6. The wire harness inspection tool as claimed in claim 1, wherein: the model of the master control circuit (1) is ST STM32F407.
7. The wire harness inspection tool as claimed in claim 1, wherein: the universal meter (2) is a USB high-precision universal meter, and the model is NI USB-4065.
8. The wire harness inspection tool as claimed in claim 1, wherein: the type of the relay matrix board card (3) is TE PB114005.
9. The wire harness inspection tool as claimed in claim 1, wherein: the oscilloscope (4) is a USB oscilloscope, and the model is PicoScope 3406D.
10. The wire harness inspection tool as claimed in claim 1, wherein: the probe interface of the relay matrix board card (3) is connected with the probe interface of the universal meter (2) in a four-wire mode, and the probe interface of the relay matrix board card (3) is connected with the probe interface of the oscilloscope (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320214751.8U CN219574242U (en) | 2023-02-15 | 2023-02-15 | Wire harness inspection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320214751.8U CN219574242U (en) | 2023-02-15 | 2023-02-15 | Wire harness inspection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219574242U true CN219574242U (en) | 2023-08-22 |
Family
ID=87662835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320214751.8U Active CN219574242U (en) | 2023-02-15 | 2023-02-15 | Wire harness inspection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219574242U (en) |
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2023
- 2023-02-15 CN CN202320214751.8U patent/CN219574242U/en active Active
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