1、 1 基于单片机的微波防盗报警器设计 摘要： 本文基于单片机设计了一个微波防盗报警系统。 该系统控制核心用的是 AT89C52， 主要包括微波探测器、热释电式红外传感器、单片机控制、信号放大及相关的驱动电路 组成。本设计操作简单、运行可靠，除了具有基本的防盗报警功能，还能够实现自动探 测信号和自动报警功能。自动探测是由热释电红外传感器和微波探测器共同完成，双探 测器的应用使得系统的可靠性大大增强，误报率明显降低；自动报警是指当单片机接收 到由探测器检测到入侵信号时，通过程序控制自动输出报警信号引发扬声器和 LED 发光 报警。 关键词：微波探测器；单片机；热释电式红外传感器；防盗报警 The
2、Design of Microwave Anti-theft Alarm Circuit Abstract : This system includes two parts: hardware design and software design. Hardware design is consisted by microwave detector circuit design, pyroelectric infrared sensors design, single-chip microcomputer control circuit design, signal amplifier cir
3、cuit design and relevant driver circuit design. The whole system is controlled by the system software. This topic designs a simple and reliable operation of the anti-theft alarm system based on single chip. It has a basic security alarm function ,and it can automatically detect the signal and realiz
4、e the automatic alarm. Automatic detection is completed by both of pyroelectric infrared sensors and microwave detector. Double detector application makes the system reliability greatly enhanced, it also reduced the rate of false positives. The automatic alarm means that when microcontroller receives the invasion signal by the probe detector, it will automatically output alarm signal to trigger the speaker and LED through the program controlling. Key words: Microwave detector; MCU; Pyroelectric infrared sensors; Anti-theft Alarm 2 目 录 摘要 1 1 引言 3 2 系统总体方案设计
