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随着传感器技术的发展,报警系统可配接的探头种类繁多,有红外、煤气、烟雾、磁感应、温度、声音、微波、指纹和影像等。由热释电红外线检测电路实现的红外探头能够灵敏地实现对活动人体的探测,电路又比较通用和廉价,所以报警系统大多采用多个无线红外探头,使它成为报警系统配接的首选探头。但红外检测电路本身存在的误报率高和可靠性低等问题一直制约着报警系统的发展和普及。因此研发高可靠性、低成本、智能化无线探头是报警系统发展的必然趋势。
With the development of sensor technology, the alarm system can be connected with a wide range of sensors, infrared, gas, smoke, magnetic induction, temperature, sound, microwave, fingerprint and video. The infrared probe realized by the pyroelectric infrared detection circuit can sensitively detect the moving human body. The circuits are more general and cheaper. Therefore, the alarm system uses a plurality of wireless infrared probes, making it the first choice of alarm system mating. However, the problems of high false alarm rate and low reliability in the infrared detection circuit have always restricted the development and popularization of the alarm system. Therefore, research and development of high reliability, low cost, intelligent wireless probe alarm system is the inevitable trend of development.