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介绍一种接口电路,使增量式脉冲编码器与微机联合使用,实现绝对位置的测量。文章从分析增量式脉冲编码器输出的两相信号关系出发,给出了信号能直接输入到微机,分辨正、反旋转方向、累计计数的接口电路。
An interface circuit is introduced to make the incremental pulse coder used in conjunction with a microcomputer to achieve absolute position measurement. Based on the analysis of the relationship between two phase signals output by incremental pulse coder, the article gives the interface circuit which can directly input the signal to the microcomputer to distinguish the positive and negative direction of rotation and accumulate the count.