【作者】 李玉株； 肖江； 黄丽燕； 刘君；

【Author】 Li Yuzhu Xiao Jiang Huang Liyan Liu Jun(Beijing forestry university,Beijing,haidian district number 35,tsinghua road)

【机构】 北京林业大学；

【摘要】 为解决激光测距系统普遍存在成本高、稳定性差等问题,设计了一个基于TDC-GP2计时单元,以飞行时间TIME-OF-FLIGHT（TOF）法中的脉冲激光测距法来实现激光测距的系统。应用低功耗Atmega128单片机和低成本的SPLPL90₃作为激光发射管,实现了激光的发射,并采用OSRAM公司生产的SFH203PFA作为激光探测器,将光信号转换为电流信号,经过放大、滤波等进一步处理后,通过TDC-GP2计时,从而实现激光测距。它不需要用高压来供电,增加了系统的稳定性。经试验证明,该系统在要求测量范围（50m）内,测量精度可以达到0.01m。为汽车间距测量和机器人避障等领域中问题提供可行的测量距离的方法。更多还原

【Abstract】 Aiming at solving the problems of high cost,poor stability existed in Laser rangefinder system.A system is designed based on TDC-GP2 timing unit and FLIGHT TIME--a FLIGHT（TOF） method to implement laser ranging system,which uses the low-power AVR atmega128 microcontroller and the low-cost SPLPL90₃ as laser tube to realize the launch,and the approach of the SFH203PFA as laser detector the laser OSRAM company produced.And the laser rangefinder is realized via further treatment TDC-GP2,the optical signals are converted to current signal,amplified,filtering,after.Without the high pressure to power supply,it increases the stability of the system.Experiments show that the measurement accuracy of this system at requirements measurement range（50m） can reach 0.01 m.It provides feasible method to measure the distance for actual operation such as automobile distance measurement and robot obstacle avoidance fields.更多还原