本文介绍的用于遥测系统的“看门狗”电路,不占用系统资源,在程序设计中也不必增加“多余”语句,即可保证各无人值守工作站的可靠性和可控性(工作站状态由主控站确定)。其方法是:设计一个“看门狗”电路,监视主控站给工作站传输命令的信道。合理安排工作时序,每隔一定时间主控站发各种控制命令(加电、测量、取数、关机),工作站予以响应。若工作站失控,主 This article describes the “watchdog” circuit for telemetry systems, do not take up system resources, the program design without having to add “redundant” statements, you can ensure that each unattended workstation reliability and controllability (workstation status Determined by the master station). The method is to design a “watchdog” circuit to monitor the master station’s command channel to the station. Reasonable arrangements for work timing, at regular intervals, the main control station issued a variety of control commands (power, measurement, take the number of shutdown), the workstation to respond. If the workstation out of control, the Lord