光学学报, 2009, 29 (s1): 361, 网络出版: 2009-06-25
非制冷红外焦平面组件温控装置设计
Design of Temperature Controlling Device for Uncooled Infrared Focal Plane Array Assembly
探测器 非制冷红外焦平面组件 温控装置 PI控制电路 热电制冷器 detectors uncooled IR-FPA temperature control PI controlling circuit thermo-electric cooler (TEC)
摘要
非制冷红外焦平面组件是功率器件。红外焦平面组件的温度会随着工作时间的增加而变化, 温度的变化直接影响红外焦平面组件的性能稳定性。为了稳定非制冷红外焦平面组件的温度,设计了一种基于比例积分控制(PI control)的制作简单调试便捷的温度控制装置, 在印刷电路(PCB)板上实现了温度的监测与控制, 预设温度可以根据标定对照表直接在面板上设定。该系统由热电制冷器(TEC), PI控制电路, 铂电阻(Pt100)温度传感器组成, 能够将焦平面阵列的温度稳定控制在25 ℃~15 ℃范围, 稳态误差小, 控制精度达到±0.1 ℃。可以保证非制冷红外焦平面组件在室温下稳定工作, 不会引进额外噪声。
Abstract
Uncooled infrared focal plane array (IR-FPA) assembly is power device. The temperature of uncooled IR-FPA assembly will be risen up along with working time, which directly affect the performance stability of the uncooled IR-FPA assembly. A design based on propertional integral (PI) control which is composed of thermo-electric cooler (TEC), PI controller, Pt-100 temperature sensor is capable of measuring and controlling temperature, and the temperature controlling circuit can keep the temperature change of the uncooled IR-FPA detector between 25 ℃~15 ℃. The precision of controlling is±0.1 ℃, so that the temperature controlling system based on PI control can ensure the uncooled focal plane array detector work in the temperature of high stabilization and precision without noise in addition.
张伟, 陈新禹, 方家熊. 非制冷红外焦平面组件温控装置设计[J]. 光学学报, 2009, 29(s1): 361. Zhang Wei, Chen Xinyu, Fang Jiaxiong. Design of Temperature Controlling Device for Uncooled Infrared Focal Plane Array Assembly[J]. Acta Optica Sinica, 2009, 29(s1): 361.