红外气体传感器中光源恒功率控制电路的设计  

Design of constant power control circuit for source of infrared gas sensor

作　　者：杨帮华[1] 丁丽娜[1] 张永怀[2] 

机构地区：[1]上海大学机电工程与自动化学院自动化系上海市电站自动化技术重点实验室,上海200072 [2]中国科学院上海微系统与信息技术研究所,上海200233

出　　处：《传感器与微系统》2012年第5期115-117,共3页Transducer and Microsystem Technologies

基　　金：上海市教育委员会创新计划资助项目(11YZ19)

摘　　要：为了提高红外气体传感器中光源输出功率的稳定性,设计了一种恒功率控制电路。该电路运用功率监视器,通过三极管和运算放大器的反馈调节,保持光源输出功率恒定。实验结果表明:该电路弥补了光源损耗和光源器件的分散性,使红外气体传感器产品的可靠性和一致性得到提高。A constant power control circuit is designed in order to improve the stability of the output power of the infrared source in infrared gas sensor.The output power of infrared source is adjusted by the triode and the operational amplifier to maintain a constant output power.The experimental results show that the circuit can make up the loss of the infrared source and the dispersion of the infrared source devices,and consequently the reliability and consistency of the infrared gas sensor products are improved.

关 键 词：红外气体传感器 红外光源 恒功率 

分 类 号：TN212[电子电信—物理电子学]