摘要
介绍了一种新的CO2探空测量方法。其原理是利用比尔-歩格-朗伯定律,使用非分光红外法,通过选择合适的红外光源和红外探测器,设计了合理的电路,在定标的基础上将测量的光强转换成CO2浓度,制作出可用于探空测量的实验装置。通过与EC9820型CO2分析仪的地面对比实验,结果表明,连续24h测量的误差范围在-10×10-6～10×10-6,平均误差为3.76×10-6,验证了设计的可行性,基本满足了大气CO2探空的精度需求,为进一步研制CO2探空仪提供了参考。
A new method is presented for atmospheric CO2 balloonsonde measurement. Based on Beer-BouguerLambert law and non-dispersed infrared （NDIR） technique, an experimental device is designed and developed. A infrared LED is used to produce suitable light source, and infrared LED detectors and a proper electronic circuit designed are used to transform light intensity into electrical signals in the experimental device. Calibration method for CO2 measurement is also presented. A comparison experiment is carried out for continuous 24 h on ground with EC9820 analyzer. Result shows that measurement error ranges from -10×10^-6 to 10×10^-4, and standard deviation is 3.76×10^-4 , which basically satisfies the precision demand for atmospheric CO2 measurement. The feasibility of CO2 measurement has been validated.
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第10期88-93,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(41005015)
科技部科技基础性工作专项基金(2007FY110700)
中科院知识创新工程重要方向性项目(KJCX2-EW-N07)资助课题
