1、 摘摘 要要 在控制领域中,经常需要进行各种位移量的测量。在实际的工业位置控制领 域中，为了提高控制精度，准确地对控制对象进行检测是十分重要的。传统的机 械测量位移装置已远远不能满足现代生产的需要，而数字式传感器光电编码器, 能将角位移量转换为与之对应的电脉冲输出, 主要用于机械位置和旋转速度的 检测，具有精度高，体积小等特点，因此本设计决定采用光电编码器进行位移检 测。 本设计为采用光电编码器来实现位移测量及其仿真，实现测量来自外部的 不同的位移值及显示。具体应用 AT89C51 单片机为核心，光电编码器进行位移测 量，同时以 LCD 液晶显示模块显示。本设计采用的光电编码器输出电压为 5V
2、， 输出信号经四倍频电路处理后送入单片机进行计数处理，最后送入 LCD 模块显 示。 本文从位移测量原理入手，详细阐述了位移测量系统的工作过程，以及硬件 电路的设计、 显示效果。 本文吸收了硬件软件化的思想， 实现了题目要求的功能。 关键词：位移测量，光电编码器，单片机，LCD 显示模块 Abstract In the control field, a variety of displacement measurements often need to be carried out. In actual industry position control domain, to increase
3、 the control precision, carries on the examination to the controlled member is accurately very important.The traditional machinery survey displacement installs has not been able to satisfy the modern production by far the need, but the digital sensor electro-optic encoder, can transform the angular
4、displacement into with it correspondence electricity pulse output, mainly uses in the mechanical position and the velocity of whirl examination, has the precision to be high, volume small and so on characteristics, therefore this design decided that uses the electro-optical encoder to carry on the displacement to examine. This design to use the electro-optical encoder to realize the displacement survey and the simulation, realizes the survey from the exterior different displacement value and
