Department of Mechatronics Engineering, National Changhua University of Education, Changhua City 50074, Taiwan.
Sensors (Basel). 2019 Jan 15;19(2):336. doi: 10.3390/s19020336.
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.
与包括红外传感器和热敏电阻在内的传统红外温度传感架构相比，我们提出了一种新颖的传感方法，该方法基于具有双模式调制的单个热电堆传感器。提出并实现了一种开关和传感电路，该电路使用斩波放大器 AD8551 和 p 沟道 MOSFET（PMOS）在检测热辐射和目标以及环境温度之间进行切换，以进行温度补偿。温度补偿后目标温度的误差估计小于 0.14°C。
