自动化工业生产或大型设备，经常需要对生产过程或运行过程或运行状态的各种工作参数（如压力、温度、流量、电压、电流等）实时的进行巡回检测、监视并报警，以确保系统的稳定可靠性。本设计电路可对温度、压力、亮度等多路同类信号或多路不同类信号进行巡回检测。只要用传感器把被检测变为电压信号，用模拟比较器把被检测信号和基准信号加以比较，就能得到判断是否有故障的高（低）电平。例如检测某一大型设备的各部分在运行中是否出现了超温现象，可以在该设备的各部分放置测温元件，将温度信号变成电压信号，采用电阻桥的形式把被测信号和基准信号输入道比较器，比较结果为高（低）电平，送入本电路就可以进行巡回检测。-Automation of industrial production or large-scale equipment, often need to run the production process or process or running the various operating parameters (such as pressure, temperature, flow, voltage, current, etc.) in real time to tour detection, monitoring and alarm to ensure that the system Reliability. The design of the circuit can be temperature, pressure, brightness, and other similar multi-channel signal or multiple different types of signals traveling detection. As long as the sensor into a voltage signal to be detected, using a comparator to be detected by comparing the signal and reference signal can be obtained to determine whether a faulty high (low) level. For example, detection of a large-scale equipment in the operation of each part of whether there was over-temperature phenomena, can be placed on various parts of the device temperature measurement devices, the temperature signal into a voltage signal, the bridge in the form of electrical resistance measured signal a