A New Type of Simultaneous Warning System
Yang Lu · Computer Technology and Development · 2006
This paper puts forward a way to better the traditional warning system.This system is a net system through RS485 bus,PC used as the master computer,single-chip microcomputer AT89S52 used as the slave computer.There are two characteristics in this paper.One is that master computer can call slave computer,in addition,slave computers also can call the master computer in order to avoid the limitation that slave computer only wait for the master computer to call,so as to improve the real time and the reliability of the system.The other is that the master computer unnecessarily call all slave computers continually one by one.The way that master computer call all slave computers one by one is inefficient,also,the master computer can not find the slave computer that gives a alarm accurately.