【作者】 杨光临； 陈明春； 段晓辉； 胡建斌；

【Author】 Yang Guanglin,Chen Mingchun,Duan Xiaohui,Hu Jianbin(Dept.of Electronics,Peking University,Beijing 100871,China)

【机构】 北京大学信息科学技术学院电子学系；

【摘要】 本文通过分析热释电红外传感器输出信号特性,着重对微弱信号前放电路的设计进行了深入研究,并采用PSPICE软件进行了仿真处理验证,实验结果表明本文设计的前放电路和人体红外探测处理结构正确合理,其设计和实验分析数据具有一定的参考价值。更多还原

【Abstract】 In this paper,a weak signal processing circuit composed of the low-noise amplifiers and the high sensitivity pyroelectric infrared sensor has been designed and established,And adopted the PSPICE simulating to analyze the output characteristic of Pre-amplifying circuit signal for Human body infrared detecting.The simulating results have proved the infrared detection circuit correct which implements the precise detection of the motion target.So the research results have a certain worth for application.更多还原