实时作战软件的看门狗技术

The Watchdog in Real Time Operation Software

看门狗是实时作战软件的一种重要的软件容错技术。本文在介绍实时作战软件的特点和运行环境的基础上，提出了看门狗的设计方案和实现方法；尤其是提出了一、二类及三类监测处理的设计思想，用于解决超时和死循环问题。

Watchdog is an important software fault-tolerant technique in real time operation software for air defence missile system. The design and implementation of the watchdog based on features of real time operation software and its running environment are presented in this paper.Es-pecially,to solve the time-out and dead loop problerns,a design concept of three kinds of monitored processing modules for real time task is proposed.