具有车速自适应的电子计长电路

An electric length autocounting circuit with speed self adaptation

采用锁相环技术、接口技术和微机技术，设计了动态自动计长的电路，应用于纺织行业络筒纱长度计量和产生纱疵长度、粗、细节计量脉冲。

This paper designs a dynamic length autocounting circuit by using phase locking loop,interfacing and microcomputer technoloqies.The circuit has been used in the textile industry for measuring yarn length and generating pulses for counting flaw length and yarn thickness.Satifactory result has been achieved.