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在分析法国ULIS公司生产的320×240长波红外非制冷微测辐射热计焦平面阵列探测器UL01011技术参数的基础上,论述了微测辐射热计非制冷红外焦平面热像仪温度控制的必要性,指出了温度控制设计的实质。并讨论了单片机、线性模式单芯片热电制冷器控制器和开关模式单芯片热电制冷器控制器温控方案的优缺点。提出了使用AD公司生产的全新单芯片热电制冷器控制器ADN8830的温控设计方案,以该芯片为核心设计出适合320×240长波红外非制冷微测辐射热计焦平面阵列探测器UL01011的温度控制电路,该电路能够把焦平面阵列温度变化控制在30±0.01℃范围内,使探测器工作在最佳温度。该方案功耗低、效率高、体积小,是一种较好的温控设计方案。
Based on the analysis of the technical parameters of UL01011, a 320 × 240 long-wave infrared uncooled microbolometer detector manufactured by ULIS Company of France, the necessity of temperature control of uncooled infrared focal plane thermal imager is discussed. The nature of temperature control design is pointed out. The advantages and disadvantages of the temperature control scheme of single chip microcomputer, linear mode single chip thermoelectric cooler controller and switch mode single chip thermoelectric cooler controller are also discussed. The temperature control scheme of the ADN8830, a new single-chip thermoelectric cooler controller manufactured by AD Company, is proposed. The temperature of the ADN8830, which is suitable for 320 × 240 long-wave infrared uncooled microbolometer FPA detector UL01011 Control circuit, the circuit can control the focal plane array temperature changes within the range of 30 ± 0.01 ℃, the detector at the optimum temperature. The program low power consumption, high efficiency, small size, is a better temperature control design.