光电编码器测量模块的可编程逻辑器件实现

Measurement Interface Design for Incremental Photoelectric Encoder Based on PLD

基于可编程逻辑器件设计了一种简单且高精度的增量式光电编码器测量接口模块,实现了辨向倍频、可逆计数、同步锁存等功能,可以与微处理器或微计算机进行高速并行通信。具体介绍和分析了有关的设计方案、硬件构成和软件设计。仿真和实际运行结果表明其工作稳定可靠,可以为光电编码器提供实用的测量模块接口,并且简化了电路设计,提高了工作效率和可靠性。

In order to provide simple but accurate measurement interface for incremental photoelectric programmable logic device is applied for realization of parallel communication. The main structure, hardware VHDL implementation, are proposed that, the CPLD based measurement direction judgment, updown counter, synchronous eneoder, latch and solution and software scheme of the system, integrated with and analyzed in detail. The simulation and practical measurement results indicated interface device could reduce the circuit design complexity, obtain more efficiency and reliability.