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门禁报警系统即为出入口门禁安全管理系统,是新型现代化安全管理系统,它集微机自动识别技术和现代安全管理措施为一体,涉及电子,机械,光学,计算机技术,通讯技术等诸多新技术。本系统主要由电子密码锁和红外报警两部分电路组成。电子密码锁电路由STC89C52单片机系统、矩阵键盘和LCD液晶模块组成。通过矩阵键盘和LCD液晶模块实现人机对话,能完成开锁、密码输入错误时报警、超次锁定、管理员解密、设定用户密码等基本的密码锁的功能。红外报警电路由STC89C52单片机系统、HS0038红外传感器、A/D7705和放大电路组成。当人非法进入时,人体发射的10μm左右的红外线被HS0038红外传感器探测到,产生的信号送入单片机系统处理并产生报警信号,实现防盗报警功能。
Access control and alarm system is the entrance and exit access control security management system. It is a new type of modern security management system. It integrates computer automatic identification technology and modern safety management measures and involves many new technologies such as electronics, machinery, optics, computer technology and communication technology. The system is mainly composed of electronic code lock and infrared alarm circuit composed of two parts. Electronic code lock circuit by the STC89C52 SCM system, matrix keyboard and LCD LCD module. Through the matrix keyboard and LCD module to achieve man-machine dialogue, to complete the unlock, the wrong password input alarm, over lock, administrator decryption, set the user password and other basic password lock function. Infrared alarm circuit by the STC89C52 microcontroller system, HS0038 infrared sensor, A / D7705 and amplifier circuit. When people enter illegally, the infrared radiation emitted by human body about 10μm is detected by HS0038 infrared sensor, the generated signal is sent to SCM system to process and generate alarm signal, so as to realize the burglar alarm function.