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.
出处
《传感器与微系统》
CSCD
北大核心
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)
关键词
红外气体传感器
红外光源
恒功率
infrared gas sensor
infrared source
constant power
