Measurement Method of Key Parameters of Automobile Connector Based on Binocular Stereo Vision

As a kind of interconnection device widely used in automobile, the quality and reliability of automobile connector directly affect the overall safety of automobile. As a key parameter of connectors, pin spacing has important effects on electrical characteristics and durability of connectors. Therefore, a method for measuring pin spacing of automotive connectors based on binocular stereo vision is proposed in this paper. Firstly, a visual measurement system is designed in this paper, which provides hardware support for pin detection and pin spacing measurement of the connectors. After that, this paper uses the image processing method to detect the pin of the car connector, mainly carries out the pre-processing of the car connector image and edge feature extraction, and on the basis of the edge feature extraction, the corner feature detection is carried out, and finally the pin detection of the car connector is completed. Finally, according to the detection results of the car connector pins, the paper adopts binocular stereo vision method to measure the pin spacing of the connector pins, and the final measurement accuracy reaches millimeter level.