摘 要
激光具有高亮度、高方向性、高单色性和高相干性等优点，所以，利用激光传感器技术和自动控制技术相结合的测距方案中，激光测距是目前应用最普遍的一种，本课题介绍了激光传感器的原理和特性，以及Atmel公司的AT87C51单片机的性能和特点，并在分析了激光测距的原理基础上，指出了设计测距系统的思路和所需考虑的问题，给出了以AT87C51单片机为核心的低成本，高精度。微型化数字显示激光测距的硬件电路和软件设计方法，该系统设计合理，工作稳定，能量良好，检测速度快，计算简单。易于做到实时控制，并且在测量精度方面能达到工业应用的要求。
关键字：激光；测距；单片机
ABSTRACT
Laser possesses high brightness, high directional, high monochromatic and high coherence wait for an advantage, therefore, by using laser sensor technology and automatic control technology in combination of measurement program, laser range is most broadly applied , the subject of laser sensors is introduced, and the principle and characteristics of single chip AT87C51 Atmel company performance and characteristics, and analyzes the principle of laser range finder, points out the basis of ideas and design ranging system needed consider the question, given a AT87C51 singlechip is low cost, high precision. Miniaturization digital display laser ranging hardware circuit and software design method, the system design is reasonable, stable work, energy, detection speed, good simple calculation. Easy to achieve real-time control, and the precision in measurement can reach the request of industrial applications.
Key word: laser; ranging; microcontroller
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