384×288非制冷红外焦平面阵列驱动电路的设计  

Design of driving circuit for 384×288 UFPA

作　　者：谭钦红[1] 任其干[1] 吴传玺[1] 万志卫[1] 

机构地区：[1]f重庆邮电大学信号处理与片上系统实验室,重庆400065

出　　处：《红外与激光工程》2012年第2期315-319,324,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金-中国工程物理研究院NSAF联合基金项目(10776040);国家自然科学基金(60602057)

摘　　要：在分析了法国ULIS公司的384×288元的长波红外非制冷微测辐射热计UL03191结构、性能及工作参数的基础上,针对该探测器数字与模拟两种输出模式设计了基于CPLD驱动电路。通过使用所设计电路采集黑体辐射的光信号转换成12位灰度图像来测试电路工作性能、成像质量和噪声特点,比较两种模式的测试结果,得出采用数字输出模式设计的电路具有体积小、功耗低及成像噪声小等特点。同时,设计了基于ADN8830单芯片热电制冷器控制器的温度控制系统,该系统设置电压由CPLD控制,可实现焦平面阵列根据环境温度变化采用不同工作温度点工作,从而较好的改善探测器工作性能和成像质量,降低探测器功耗。On the basis of analysing the structure,performance and operating parameters of UL03191,384×288 element long wave infrared uncooled micro-bolometer produced by ULIS of France,driver circuits based on CPLD was designed for both digital and analog mode of the detector.By using this design of the circuit,optical signal of blackbody radiation was collected,and converted into a 12-bit grayscale images,to test the circuit performance,image quality and noise characteristics.Comparison of the two modes′ test results show that the digital output mode of this designed circuits has small size,low power consumption and imaging noise.Meanwhile,temperature control system based on ADN8830 single-chip thermoelectric cooler controller is designed.Setting voltage of the system is controlled by CPLD,the system can generate focal plane arrays to be operated in different temperature points according to environmental temperature changes,which can improve image performance and quality of the detector and reduce power loss.

关 键 词：非制冷红外焦平面阵列 驱动电路 热电制冷器 偏置电压 

分 类 号：TN215[电子电信—物理电子学]