Precision detection device and method for multi-core cable terminal crimping quality

Abstract

The invention discloses a precision detection device and method for multi-core cable terminal crimping quality. The device comprises a detection speed control circuit; the detection speed control circuit is connected with a detection timing sequence control circuit; the detection timing sequence control circuit is connected with an open circuit and dislocation detection circuit; the open circuit and dislocation detection circuit is connected with a failure judgment and warning circuit; the detection timing sequence control circuit is also connected with a sampling, comparison and amplifying circuit; the sampling, comparison and amplifying circuit is connected with an A / D conversion circuit; the A / D conversion circuit is connected with both a storage / counting control circuit and a CPU; the storage / counting control circuit is connected with both the CPU and a liquid crystal display module; the CPU is connected with the liquid crystal display module. The precision detection device and method for multi-core cable terminal crimping quality has the advantage that failures, such as open circuit, dislocation and excessive crimping resistance, occurring after terminal crimping of multi-core cables having more than eight cores can be detected and judged precisely and automatically.

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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