Temperature monitoring system based on AT89C51 microcontroller

To the problems of online real-time temperature inspecting of the electric cable interface, this paper designs an inspecting and alarming system based on AT89C51 microcontroller. The hardware circuit of this system is composed of collector, host control machine and PC. Through the key courses of collection, storage, conversion and transmission, the temperature data of electric cable interface is sent to real-time show and alarm, achieves inspecting and alarming for the interface of electric cable and avoids the happenings of fire effectively.