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热释电红外传感器在人体感应自动门中的应用

信息来源: http://ggbsw.com  时间:2018/8/20 15:54:56 

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热释电红外自动门主要由光学系统、热释电红外传感器、信号滤波和放大、信号处理和自动门电路等几部分组成。菲涅尔透镜可以将人体辐射的红外线聚焦到热释电红外探测元上,同时也产生交替变化的红外辐射高灵敏区和盲区,以适应热释电探测元要求信号不断变化的特性;热释电红外传感器是报警器设计中的核心器件,它可以把人体的红外信号转换为电信号以供信号处理部分使用;信号处理主要是把传感器输出的微弱电信号进行放大、滤波、延迟、比较,为报警功能的实现打下基础。

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bbin体育热门关键词:热释电红外传感器,热释电红外传感器模块,热电堆温度传感器,人体红外感应模块,PIR传感器

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