无TEC制冷电路下的红外成像温度补偿方法

在红外成像系统中去除制冷电路来降低功耗和体积的方法已成为红外热成像仪的配置主流,但在无制冷电路的情况下,红外成像效果会受到环境温度以及自身发热的影响。本文设计了一种温度补偿的校正方法,采用了先标定后补偿的处理方案,在基于FPGA结合温度传感器以及FLASH存储芯片的硬件平台上,实现了对红外探测器输出图像在无TEC制冷电路情况下的温度补偿校正。实验结果表明该设计方案有效地抑制了在无制冷电路情况下红外探测器所处环境温度的起伏对红外输出成像效果所造成的干扰。

Infrared imaging temperature compensation method without TEC refrigeration circuit

The method of removing the cooling circuit to reduce the power consumption and the volume in the infrared imaging system has become the mainstream of the configuration of the infrared thermal imager,but in the case of no refrigeration circuit,the infrared imaging effect will be affected by the ambient temperature and self-heating.A correction method of temperature compensation is designed.The method adopts the processing scheme of first calibration and then compensation.Based on the hardware platform,the output image of infrared detector is realized without TEC cooling circuit under the temperature compensation correction.The experimental results show that the proposed method can effectively suppress the interference of infrared temperature fluctuation on infrared imaging effect without the cooling circuit.