摘要
为克服传统热释电报警器在外界温度上升其灵敏度下降或温度下降其灵敏度提高的缺点,采用低功耗MSP430单片机及高性能放大器,采集热释电红外传感器的信号及外界环境温度信号,通过高效的软件算法实时调节报警器的灵敏度,改善在温度等外界条件变化下,引起报警器门限值波动造成灵敏度下降或上升的问题,使得报警系统更加灵敏与稳定,满足对人身财产安全的更高要求,获取更智能的报警系统。
In order to overcome the varying sensitivity of traditional pyroelectric detectors with changing ambient temperature, the low-power MSP430 microcontroller and high performance amplifiers are used to collect pyroelectric infrared sensor signal and the ambient temperature signal using efficient software algorithms real-time adjustment alarm sensitivity improvement in external conditions such as temperature changes, the cause of the alarm threshold sensitivity caused by falling or rising volatility issues, making the alarm system more sensitive and stable, thus a more intelligent alarm system.
出处
《电子科技》
2014年第3期31-34,共4页
Electronic Science and Technology
