基于热释电探测器的人体红外感应单元设计  

Design of Human Infrared Sensing Unit Based on Pyroelectric Detector

作　　者：梁烁 刘文怡[1] 历智强 白嘉 彭晴晴[3] LIANG shuo;LIUWen-yi;LI Zhi-qiang;BAI Jia;PENG Qing-qing(North University of China,National Defense Key Laboratory For Electronic Measurement Technology,Taiyuan 030051,China;Beijing aerospace systems engineering institute,Beijing100076,China;North Automatic Control Technology Institute,Taiyuan 030006,China)

机构地区：[1]中北大学,电子测试技术国家重点实验室,山西太原030051 [2]北京宇航系统工程研究所,北京100076 [3]北方自动控制技术研究所,山西太原030006

出　　处：《仪表技术与传感器》2019年第4期29-32,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金杰出青年基金项目(51425505)

摘　　要：针对现有的人体定位系统中红外感应单元探测距离小、信号处理复杂等问题,提出了一种基于热释电探测器的红外感应单元。通过锗窗口光学透镜对热释电探测器进行调制,减小感应视场角度,提高感应方向性和抗干扰能力,设计信号调理电路对输出信号进行放大滤波。采用锥形外形结构增强聚焦能力,拉长探测距离,便于实现大范围定位。实验结果表明红外感应单元的最远探测距离达到45 m,并绘制了红外感应单元的感应视场图。Aiming at the problems of small detection distance and complex signal processing of the infrared sensor unit in the existing human positioning system,an infrared sensor unit based on pyroelectric detector was proposed.Through germanium window optical lens,the pyroelectric detector was modulated to reduce the angle of induced view and improve the directionality of induction and anti-interference ability.The signal conditioning circuit was designed to amplify and filter the output signal.Conical shape structure was designed to enhance the focusing ability to extend the detection range for wide range of positioning.Experimental results show that the farthest detection distance of the infrared sensing unit reaches 45m,the infrared induction field of view of the induction unit is drawn.

关 键 词：红外感应 热释电探测器 人体定位 感应视场 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]