A novel infrared temperature measurement with dual mode modulation of thermopile sensor

Chih Hsiung Shen; Shu Jung Chen; Yi Ting Guo

doi:10.3390/s19020336

A novel infrared temperature measurement with dual mode modulation of thermopile sensor

Chih Hsiung Shen, Shu Jung Chen, Yi Ting Guo

Department of Mechatronic Engineering

Research output: Contribution to journal › Article

Abstract

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 °C.

Original language	English
Article number	336
Journal	Sensors (Switzerland)
Volume	19
Issue number	2
DOIs	https://doi.org/10.3390/s19020336
Publication status	Published - 2019 Jan 2

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Biochemistry
Instrumentation
Electrical and Electronic Engineering

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10.3390/s19020336

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Shen, C. H., Chen, S. J., & Guo, Y. T. (2019). A novel infrared temperature measurement with dual mode modulation of thermopile sensor. Sensors (Switzerland), 19(2), [336]. https://doi.org/10.3390/s19020336

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