Precision testing device and testing method for crimping quality of multi-core cable terminals

Abstract

The invention discloses a multi-core cable terminal crimping quality precision detection device and detection method, the device comprises: a detection speed control circuit, the detection speed control circuit is connected with a detection timing control circuit, and the detection timing control circuit It is connected with the open circuit dislocation detection circuit, and the open circuit dislocation detection circuit is connected with the fault judgment alarm circuit; the detection timing control circuit is also connected with the sampling comparison amplifier circuit, and the sampling comparison amplification circuit is connected with the A / D analog-to-digital conversion circuit, The A / D analog-to-digital conversion circuit is connected with the storage / counting control circuit and the CPU processing unit respectively, the storage / counting control circuit is connected with the CPU processing unit and the liquid crystal display module respectively, and the CPU processing unit is connected with the liquid crystal display module . The beneficial effect of the invention is that it can automatically and accurately detect and judge faults such as open circuit, misalignment, and crimping resistance exceeding the standard after crimping terminals of multi-core wire cables with more than 8 core wires.

Description

technical field [0001] The invention relates to a precision detection device and detection method for crimping quality of a multi-core cable terminal. Background technique [0002] At present, the crimping quality of existing domestic cable terminals is mainly controlled according to the pressure of the crimping joint, and the crimping quality of the terminal is judged by testing the pressure. For the crimping quality inspection of high-current power cable terminals, optical imaging technology is used to analyze the cross-sectional images of crimped terminals and wire joints for manual analysis and judgment. These quality testing methods are suitable for testing the crimping quality of cable terminals with 1 to 4 core diameters. However, for the detection of crimping quality of digital communication cable terminals with 8 to 128 cores, the efficiency of using pressure detection and cross-sectional image detection is very low, and because the wire diameter of digital communi...

AI Technical Summary

Problems solved by technology

[0006] In the existing multi-core cable terminal crimping quality rapid detection device and method, because there is a fluctuation space of 0.102V for the terminal crimping quality, that is: when the cable length is the maximum value (40m), the terminal crimping Equivalent resistance R T When it exceeds the standard value of 8Ω and is less than 10.2Ω, it may still be judged as a qualified product, and the specific equivalent resistance value of each core wire cannot be measured

If it is necessary to measure the equivalent resistance value of each core wire to determine whether there is a quality fault due to the requirements of the cable application, the rapid detection method cannot meet the requirements

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