A Novel Infrared Temperature Measurement with Dual Mode Modulation of Thermopile Sensor

被引：2
|
作者：
Shen, Chih-Hsiung [1 ]
Chen, Shu-Jung [1 ]
Guo, Yi-Ting [1 ]
机构：
[1] Natl Changhua Univ Educ, Dept Mechatron Engn, Changhua 50074, Taiwan
来源：
SENSORS | 2019年 / 19卷 / 02期
关键词：
thermopile; switching; modulation; CMOS-MEMS; FLOW SENSOR;
D O I：
10.3390/s19020336
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Superior to the traditional infrared temperature sensing architecture including infrared sensor and thermistor, we propose a novel sensing approach based on a single thermopile sensor with dual modes modulation. A switching and sensing circuit is proposed and realized with a chopper amplifier AD8551 and p-channel MOSFET (PMOS) for switching between detection of thermal radiation and the target and the ambient temperature for compensation. The error of target temperature after temperature compensation is estimated at less than 0.14 degrees C.
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收藏
页数：10
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