摘 要随着科学技术的迅猛进展，安全问题已经成为了一个普遍的人们迫切需要解决的问题。本文设计的是一种性能稳定、灵敏度高的人体红外报警系统。该报警系统电路简单、安装使用方便，且具有报警功能，可用于家庭、企业、工厂等场合。该系统以MSP430F149 单片机为核心，采纳了相应人体感应模块 PIR 模块及红外模块，运用定时器、外部中断、一体化红外接收头等来实现。用户可通过遥控器无线遥控报警系统的打开和关闭,该报警系统主要由 LED 和扬声器组成，通过 LED 闪耀和扬声器发声来实现报警。在报警系统开启的情况下，一旦有人在人体感应模块的探测范围内活动，报警系统就会报警。报警系统报警后，如若人一直在探测区域活动，则报警系统一直报警，直到人在探测区域静止，从静止状态开始计时，若人一直保持静止，则 3S 后报警系统自动关闭，若人保持静止的时间小于 3S，则又从下次人保持静止的时候开始计时。当然，若人离开了探测区域，且无任何生物进入探测区域，则 3S 后报警系统自动关闭。若用户通过遥控器关闭掉报警系统，则无论是否有人经过，报警系统都不会报警。关键词：安全问题；报警系统；MSP430F149；PIR 模块；AbstractWith the rapid development of science and technology, the security problem has become a common problem that people want to solve urgently. This topic describe the design of a stable performance, high sensitivity of the human body infrared alarm system. The alarm system has the advantages of simple circuit, convenient installation and use, and has the function of alarming, it can be used in the occasions of families, enterprises, factories, etc.. The system uses MSP430F149 micro-controller as the core, using the corresponding human body induction module PIR module and infrared module, using the timer, external interrupt, integrated infrared receiver first to achieve. The user can control wireless alarm system to open and close through the remote-control, the alarm system mainly consists of LED and the speaker, through the LED flashing and speaker sound to realize the alarm. In...
