基于电荷耦合元件线阵的接触线磨损测量技术与应用

摘要

接触线磨损量的测量是改善弓网关系、确保列车正常运行的关键.针对相关技术的现状及发展,对基于DSP(数字信号处理器)和CCD(电荷耦合元件)线阵的非接触测量技术进行了研究.主要设计了利用一片DSP芯片完成对CCD的驱动和数据采集,阐述了芯片时序的产生和配合问题.然后通过图像处理技术对采集到的接触线磨损图像进行处理,从而计算出接触线的磨损量.根据工程测量的实际需要,设计了一套基于线阵CCD和DSP的接触线磨损量监测装置.提出采用线阵CCD和DSP及平行光构成的测量系统,测量精度高、响应时间短,适用于恶劣的工况环境.%The measurement of overhead contact wire is the key to improve the wear bowet relationship and ensure the normal operation of the train.In this paper,the status and related technology for the development of paper-based DSP and CCD linear array of non-contact measurement techniques are studied,the main design to complete CCD driver and data acquisition by using a DSP chip is introduced,the production and timing of the chips are expounded.Then,the image processing technology is used to process the collected images about the contact wires,and the amount of the contact wear is also calculated.