基于半导体制冷器的小型黑体参考源设计

A New Design of Small Black-body Reference Based on Thermoelectric Cooler

文章针对红外热像仪在实际应用中非均匀性多点校正问题,选择了体积小、制冷迅速的半导体制冷器作为黑体参考源,并采用模糊-PID控制算法对参考源进行控制,设计出一种精度高、便于安装并且能够进行多温度点控制的小型黑体参考源。经过测试和分析,对黑体的稳定性、发射率和均匀性做出了客观的评价,表明了该设计具有较强的实用性。

Non-uniformity correction is important to the application of infrared cameras. In order to promote the development of this technology, a new design of small black-body reference with small bulk, high precision, broad temperature range and convenient installation characters is introduced. The design chooses small and efficient thermoelectric cooler as black-body reference and takes the arithmetic of fuzzy-PID. Through serious testing and analysis, objective evaluations are given to stability, emissivity and uniformity of black-body, which proved that this new design is quiet practical.