基于激光测距的矿井机车防撞测距系统研究

Research of collision avoidance and ranging system of mine locomotive based on laser ranging

针对现有矿井机车防撞系统易受干扰而测距不准确或成本高等问题,采用STC90C516RD＋单片机、TDC-GP1高精度计时芯片设计了一种基于激光测距的矿井机车防撞测距系统,介绍了系统测距原理及软、硬件设计方案;在20~100m范围内对该系统进行测距试验,所得原始测距误差在0.22m以内,在Matlab中经最小二乘法对数据进行线性拟和修正后误差降低到0.03m以内,符合机车运行时的测距要求。

For problems of incorrect ranging caused by interference and high cost of existing collision avoidance system of mine locomotive, a collision avoidance and ranging system of mine locomotive based on laser ranging was designed by use of STC90C516RD＋ single chip microcomputer and TDC-GP1 timing chip with high precision. Ranging principle of the system and design schemes of software and hardware were introduced. Ranging test was done for the system in range of 20-100 m with the max original ranging error of 0.22 m. After being linearly fitted and corrected in Matlab by use of the least square method, ranging errors were less than 0.03 m and satisfied ranging requirement at locomotive running.