基于单片机的室内安全报警系统返修该

西安航空学院本科毕业设计（论文）ABSTRACTThe modern world with the increase of family use of fire and electricity consumption,residential area and personnel flow of local fire frequency is higher and higher.If in theevent of fire,it will be very vulnerable to put out the big situation not in time and the lackof fire-fighting equipment,and some is what straggling attendees,error factors such as theescape way,eventually lead to significant loss of life and safety and property,is a verypainful thing.This topic research the multi-function wireless smoke alarm the STC89C51 as the corecontroller,using gas sensor MQ-2,ADC0809 adc,DS18B20 temperature sensor toachieve its basic function.By the selected sensors and chips,when the concentration ofcombustible gas in the environment or the temperature changes when the system sends outthe corresponding light alarm signal and sound alarm signal,in order to realize the firealarm,intelligent prompt.Key words:MQ-2 gas sensor;fire alarm;MCU;intelligent control:DS18B201