基于动态下使用热释电传感器的新型目标探测方法的研究  

Research of a New Method of Target Detection Based on Pyroelectric Infrared Sensor

作　　者：孙乔[1] 杨卫[1] 于海洋[1] 李波[1] 

机构地区：[1]中北大学电子测试技术重点实验室,山西太原030051

出　　处：《计算机测量与控制》2011年第11期2649-2651,共3页Computer Measurement &Control

基　　金：国家自然科学基金资助(50675213);山西省自然科学基金资助(2010011026-2)

摘　　要：为了增大热释电型红外传感器的探测范围,提高热释电传感器的探测灵敏度,提出了一种可实现大范围目标检测并且具有高灵敏性的热释电传感器的新型使用方法;该方法使热释电传感器在步进电机的带动下匀速转动,在周围环境基本不变的情况下,记录下其波形作为初始波形,在没有目标进入探测范围的情况下,波形将保持一定的规律基本不变;一旦目标进入传感器的探测范围,将打破原始波形规律,传感器即输出报警信号。由于热释电传感器是匀速转动的,所以一个热释电传感器就能对360°范围进行检测,大大扩大了热释电传感器的探测范围,并且当目标进入探测区域后即使静止不动依然会被动态下的传感器探测出来,解决了热释电传感器不能探测静止目标的问题,大大提高了热释电的灵敏度;该方法进一步拓展了热释电传感器的使用范围,进一步提升了热释电传感器在安防和智能家居系统中的应用。In order to increase PIR infrared sensor＇ detection range, improving PIR sensor~ s detection sensitivity, this paper puts for- ward a new method which can achieve widespread target detection and high sensitivity of PIR sensor. This method makes the PIR sensor con- stant rotation drived by the stepper motor and save the first wave as the initial wave if the environment is almost the same. The waveform will remain basically unchanged certain rules if there is no target into the detection range and the law of the original waveform will not break, the new wave will emergence if there is a target into the detection range and the sensor alarm signal is output. PIR sensor detection range is greatly increased that only one PIR sensor can detection the range of 360°since the PIR sensor is rotated and solve the problem of that PIR sensor can＇ t detect static target greatly improving it＇ sensitivity. This method expands the use of the PIR sensor in the security and intel- ligent home system.

关 键 词：热释电传感器 动态下 大范围 高灵敏度 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]