基于IRIG-B码的测控时间系统的设计

摘要

时间系统对于测控设备的正常运行和故障诊断起着至关重要的作用.IRIG-B码是国际靶场试验通用的同步时间码.本文基于IRIG-B码对某测控设备的时间系统进行设计,并在该设备中成功实现时间同步,精度可达级.与以往的各种方法相比,在解码的方案中作出了改进,利用移位寄存器实现帧同步和码元边沿提取,使得设计简单易行,具有较强的容错能力和抗干扰性.同时,本地时间的正常工作使得设备在B码异常的情况下仍然可以获得准确的时间信息,从而为数据处理、存储及事后分析提供精确的时间定位,具有灵活性,开放性,简单实用,功耗低的优点.%Time System plays very important role in formal function and trouble checking of measurement and control device. IRIG-B is the current synchronization time code in international shooting range. The paper designs the time system of measurement and control device based on IRIG-B , and has realized the time synchronization. It can fully satisfy most measurement and control system requirement. Compared with other methods before, it improves in decode scheme, which makes the design easy to realize. Local time system can ensure the equipment acquire correct time information , and provide time orientation for data processing, storage and analysis afterwards.