红外光幕在地铁屏蔽门障碍物探测中的研究

摘要

Aiming at shortage of method existed in subway platform screen door(PSD) detects the minimum size of obstacles is 4 mm×40 mm when using the method of door speed curve changes a method to detect obstacles using infrared light screen is proposed, combined with DSP control technology of brushless DC motor (BLDCM ) and fuzzy PID control algorithm to realize obstacle detection of subway platform screen door. Mathematical model of the whole system is constructed and simulation in Matlab/Simulink. The simulation results show that the subway platform screen door obstacles detecting system based on infrared screen can solve the shortage which existed in the existing subway platform screen door obstacles detecting system.%针对现有地铁屏蔽门通过门速曲线的改变来探测障碍物的方法在检测最小尺寸为4 mm×40 mm的障碍物中所存在的不足,提出一种利用红外光幕的障碍物探测方法,并结合数字信号处理器(DSP)的无刷直流电动机控制技术和模糊PID控制算法来实现地铁屏蔽门障碍物的探测,最后在Matlab/Simulink环境中构建了整个系统的数学模型,并对系统在正常情况和遇到障碍物时的关门过程进行仿真分析.仿真结果表明:基于该方法设计的地铁屏蔽门障碍物探测系统可以解决现有地铁屏蔽门在障碍物探测方面的不足.