Supermarket security system based on STC89C52, PLC and KingView

This paper is mainly about the design of the security system for supermarket mainly including the upper computer part and the lower. The lower computer is the hardware design and software design of MCU and PLC. And the upper computer is mainly the design of configuration interface and configuration program design. The hardware circuit design adopts STC89C52 as the main control module to regulate flame sensor module, gas sensor module, infrared sensor module and serial port module. PLC uses FX-2N series as the actuator to realize the sound-light alarm and the directional light for personnel evacuation. At the same time, KingView is used as a real-time display of collected data and data circulation tool between MCU and PLC. Software design and debugging is a necessary way to realize the system. The design of supermarket security system is mainly used to timely alarm when the fire and gas leakage occur in the warehouse, counter, kitchen and other places of the supermarket, in order to reduce financial loss and personal injury.