主要介绍了旋转编码器的工作原理，通过8051单片机来累计旋转编码器被刮水器转轴带动所产生的脉冲数，将其换算转化为角度，从而达到测量刮水器转角的目的。
Making use of rotary encoder attains the purpose of measuring rotative Angle of wiper through single chip computer 8051 to count the pulse of rotary encoder generating, which is drove by wipers axle.
一编码器，安装在印刷机一侧，该编码器与该摄像机均连接一计算机。
The encoder is installed at the one side of the printing machine, and the encoder and the camera are respectively one computer.
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