5、的要求。并且应用TDC-GP21时间测量原理,设计了基于TDC-GP21的时间间隔测量单元。关键词 激光;测距;单片机;TDC-GP2I第1章绪论AbstractLaser possesses high brightness, high directional, high monochromatic and high coherenceandsoforth,therefore,combiningthelasersensortechnologyandautomaticcontroltechnolog