It presents a set of linear displacement measurement system based on encoder. The system includes displacement encoders, optical lens and read out circuit. Displacement read out unit includes lines CCD and its drive circuit. two amplifier circuits, second order Butterworth low - pass filter and the binarization circuit The coding way is introduced, and various parts of the experimental signal waveforms are given. and finally a linear experimental test results are given. The experimental results are satisfactory.%介绍了基于光学编码的线位移测量系统.系统由位移编码、光学成像和位移读出三个部分组成,位移读出包括光电转换器件(线阵CCD)及其外围电路(CCD驱动电路)、二级放大电路、巴特沃斯二阶低通滤波电路和二值化电路.介绍了编码方式,给出了各个电路的实验信号波形,给出了系统的线性实验测试结果,实验结果令人满意.
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