application of burglar alarm system inuptown based on at89c2051.doc

毕 业 设 计（论 文）外 文 参 考 资 料 及 译 文 译文题目： Application of Burglar Alarm System in Uptown Based on AT89C2051 学生姓名： 学 号： 专 业： 电子信息工程 所在学院： 信息技术学院 指导教师： 职 称： 2010年12月25日 Application of Burglar Alarm System in Uptown Based on AT89C2051 Abstract : AT89C2051 is powerful programmed microship,the hardware principle and software realization of gyard against theft and alarm system based on AT89C2051 are introduce. Key words : Microchip Guard against theft and alarm syetem AT89C2051 I．P Many person have a habit that when going to study, working for a long time They will be home anti-theft lock insurance, prevent thieves entanglements room,but even the ordinary anti-theft entanglements will be sure for skiing, the theft have rich experience of habitual is also very easy to come in, they take a little time to burst in. So somebody puts forward on the door with a concealed lock control switch,it can work after the owner leave out . If the master will closed concealed system in three minutes, then system should stop work. But when there are thieves breaking to steal, and couldnt find this secluded alarm system to close it,the system will automatically alarm in three minutes. II．T 2.1 design priniples Such as figure 1 showes, using a microcontroller AT89C2051 as a CPU, it will realize intelligent alarm.The system is established by an defend switch k1, the door switch k2 often shut , microcontroller AT89C2051, an 5 v Super-mini relays SSR , 7805 voltage regulations, an alarm.In addition can report to alarm, it will enter semaphore to keep long range to link, and carry out long range supervision. 2.2Guard against theft the hardware of system The AT89C2051 is a programmable EPROM Microchip of high performance by 53 bytes knot, Compatible with industry standards MCS51 instruction group and pins, the Atmel company produces of the AT89C2051 is a kind of microcontroller with strong function, it provided a vivid altitude useful solution to a lot of embedded control applications.It