摘要
提高脉冲法激光测距系统的精度关键在于计时。文中结合高精度计时芯片TDC-GP2和低功耗单片机MSP430F149,采用时差法设计了一种高精度脉冲式激光测距系统。该系统通过TDC-GP2的Start、Stop1和Stop2三通道的时差测量消除硬件电路的时差,多次测量后,单片机进行了软件均值处理,提高脉冲式激光测距系统的精度至0.1m。
Improving the accuracy of the pulsed laser ranging system lies in the timing precision.In this paper,the high-precision pulsed laser ranging system is designed through time difference method which combined with high-precision timing chip TDC-GP2 and low-power microcontroller MSP430F149.By eliminating the time difference of hardware circuit with time difference measurement of TDC-GP2 Start,Stop1 and Stop2 channels and MCU averaging multiple measurements improve the accuracy of the pulsed laser ranging system to 0.1 m.
出处
《信息技术》
2013年第11期161-163,166,共4页
Information Technology
