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1.概述在工业自动化控制装置中,应用最广泛的要属信号报警系统,从单点的监视报警(如温度、压力、液位、流量),机组的监视报警(如压缩机)以至大型成套设备,无一不用到信号报警系统。报警系统随着工业自动化水平的提高,从单回路的基本报警单元发展成为一个完整的报警系统,从单纯的光显示发展成为能与各类计算机相连,进行数据处理、输出打印等多种功能的报警系统报警系统的基本功能是监视设备的运行状态,当被监视的工艺参数越限或状态发生变化时,通过声响和灯光进行报警,根据它
1. Overview In the industrial automation and control devices, the most widely used signal alarm system, from a single point of alarm monitoring (such as temperature, pressure, level, flow), the unit monitoring alarm (such as compressors) as well as large sets Equipment, both use the signal alarm system. With the improvement of industrial automation, the alarm system has evolved from a single-loop basic alarm unit to a complete alarm system, which has evolved from a mere light display into a variety of functions that can be connected to various types of computers for data processing and output printing Alarm system The basic function of the alarm system is to monitor the operating status of the device, when the monitored process parameters more limited or changes in state, by the sound and light alarm, according to it