报警系统中的通信技术与应用研究

北京理工大学珠海学院2020届本科生毕业设计Research on communication technology and application in alarmsystermAbstractPresent world,because of the great improvement of people's living standards,more andmore people begin to pay more attention to the protection of their family property.In order toprotect people's family property,in the case of fire at home and the entry of outsiders,thedesign of a simple and practical alarm has gradually become an increasingly concerned aspectof the public.The system is connected with two kinds of sensors,which are used to detect humanbody (hc-sr501 sensor)intrusion and fire (mq-2 sensor).This paper mainly introduces thedesign of GSM home alarm and security system based on STC89C52.It is sensitive to theoccurrence of alarm,and can detect and send out alarm at the first time.So that the family canbe informed at the first time,even if there is no one at home can make correspondingmeasures in time.This kind of anti-theft device can be installed in a more concealed place forsignal detection,and the GSM module can send alarm SMS to the mobile phone for remotemonitoring.This design mainly includes information collection,information processing,alarm and GSM module.Keywords:single chip microcomputer;hc-sr501 sensor;GSM;mq-2 sensor