CPLD在自触发脉冲激光测距飞行时间测量中的应用

Application of CPLD in time-of-flight measurement of self-triggering pulsed laser ranging

自触发脉冲激光测距是一种新型的脉冲激光测距方法,该方法解决了传统脉冲激光测距测量精度与 测量速度之间的矛盾。其飞行时间测量系统的设计很大程度上决定了自触发脉冲激光测距的测量精度和测量速 度。设计并实现了基于CPLD的自触发脉冲激光测距的飞行时间测量系统。CPLD的使用提高了激光测距的 精度,并且系统结构简单,体积小,可靠性高,非常适合高性能手持式脉冲激光测距仪。对自触发脉冲激光测距 进行了实验研究,在20 m的测量范围内,获得了±0．98 mm的测距精度。

Self-triggering pulsed laser ranging, a novel pulsed laser ranging method, can solve the dilemma between ranging precision and measuring speed in the traditional laser ranging technique. The ranging precision and measuring speed are decided by the design of the time-of -flight measurement system to great extent. A time-of-flight measurement system based on CPLD for self-triggering pulsed laser ranging is designed and implemented. Benefiting from the high speed of CPLD, the precision of laser rangefinder is improved. Furthermore, the time-of-flight measurement system is adapted extraordinarily to high performance portable pulsed laser rangefinder for its compactness, simple structure, and high reliability. At last, experiment on self-triggering pulsed laser ranging is carried out, in which ±1 millimeter precision is achieved with 20 m-range area.