中文摘要：

为提高热释电红外传感器对目标（行人）的探测距离,对被动式红外传感器探测系统和红外信号进行了研究.由于热释电红外传感器的信号与目标（行人）的感知部位、环境与目标温度差值、透镜的面积和区段数量有关,设计了一种测试红外传感器探测系统感知距离的试验方法.实验结果表明,在考虑了影响探测距离的几个因素后,改进后的红外探测系统探测距离由原来的10m提高到40m,红外信号探测良好.试验方法和结果对其他同类型探测系统的研究有一定的指导和借鉴意义.

英文摘要：

To improve the detection range of pyroelectric infrared sensor on the target（the pedestrian）,the passive infrared sensor detection system and IR signal were studied.The pyroelectric infrared sensor signal is affected by the perception parts on the target（pedestrians）,temperature difference between the environment and objectives,lens size and sections related to the number.A detection system for testing infrared sensors distance were designed.Experiments showed that after taking into account several factors which affect the detection range,the detecting distance was improved from 10 meters to 40 meters while keeping the signal level of infrared detection unchanged.Test methods and results offer some guidance and reference for other similar detection systems.