看门狗技术在改善系统可靠性中的应用

Application of the watchdog technique to improve the system reliability

工业控制系统中 ,对系统可靠性要求比较高 ,尤其以一些利用计算机软件作为控制核心的系统 ,如数控机床、机器人、自动化设备等等 ,系统的故障会造成一些严重的后果 ,本文介绍一种简单、有效的措施改善这类系统可靠性—采用看门狗电路。

The higher level system of reliability is required in industrial control system, especially in the system that the software of computer is the core of control, such as NC machine tool, robot, automation equipment etc; systematic failure causes some serious bad results. The watchdog circuit, one kind of simple and efficacious method to improve the system reliability was introduced.