基于PLC控制的自动断电插排

湖南工业大学本科毕业设计（论文）ABSTRACTElectrical appliances on standby for a long time not onlycause huge waste of energy,and make the strip load more and more big,has brought the serious security hidden danger.At the same time,greatly reduces the service life of the appliance.This design whichhas the function of timing and intelligent induction socket.Its notonly you are not the real life of ordinary socket function isinsufficient,also brought great convenience for people's life.This system by single chip microcomputer minimum system,QC12864B LCD screen,HC SR501 and relay of several modules.By aperipheral keyboard connected to the relay platooninsert timing,delay set,can make it according to our wishes in the correspondingtime on and off.Or by the HC -SR501 pyroelectric infrared sensormodule,when sensing infrared and output electric signal from thebiological triggers the SCT89C51 MCU external interrupt pin,automatic control strip on and off.Working mode and directed by theLED indicator light will work data through the LCD screen display.Software design using keil uvision4,each function selectionmenu interface by QC12864B LCD screen display,cooperate with thekeys to achieve more choice and switch between each function,makesthe system has a friendly interface.According to the function of theneed to implement in C language to complete the underlying drive andeach subsystem writing and debugging of the program.Make externalrelays can work according to certain rules,which can achieve thegoal of intelligent control,and to a great extent,have the effectof energy saving.Key words:SCTC89C52;socket:SH-RF501:DS1302