激光测距仪系统设计(机械图,电路图,c语言程序)(毕业论文22000字,cad图纸,答辩ppt)
摘 要
本次激光测距仪系统设计采用的是相位式测距法,相位激光测距又称调幅连续波激光测距通常是基于对目标回波相位的探测,在诸如军事、航空、工业和体育等领域已经取得广泛的应用。相位激光测距仪的发展趋势是小型化、高可靠性、便于与其他仪器集成。
本文介绍了相位式激光测距仪的测距原理,提出了测距系统的具体设计方案。 设计围绕接收和发射系统的性能开展,主要包括了锁相环、分频器、信号整形与放大电路、弱信号检测滤波与放大电路、混频器、鉴相测相器、信号处理与显示电路、单片机 89C51 的软硬件设计和C语言软件编程等问题。利用Proteus软件对系统电路进行绘制以及利用CAD设计了系统机械的结构。
关键词: 激光测距;相位;锁相环;混频器;分频器;单片机
System Design of a Laser Range Finder
ABSTRACT
The phase-ranging method is adopted in the system design of the laser range finder. It is also known as amplitude modulation of continuous wave laser ranging and is usually based on the detection of the phase of the target echo, has been widely used in many fields such as military, aerospace, industrial and sports etc. [毕业设计论文网 Doc163.com]
This thesis first introduces ranging principle of phase-shift laser