恒流源对近红外光谱传感器测量不确定度的影响  

Effect of Constant Current Source on Measurement Uncertainty of Near Infrared Spectrum Sensor

作　　者：方立德[1,2,3,4] 徐潇潇 赵计勋 韦子辉 FANG Li-de;XU Xiao-xiao;ZHAO Ji-xun;WEI Zi-hui(College of Quality&Technology Supervising,Hebei University,Baoding,Hebei 071000,China;National and Local Joint Engineering Research Center for Metrology Instruments and Systems,Baoding,Hebei 071000,China;Measuring Instruments and Systems Engineering Laboratory of Hebei Province,Baoding,Hebei 071000,China;The Center of Measuring Instruments and Systems Engineering and Technology of Baoding,Baoding,Hebei 071000,China)

机构地区：[1]河北大学质量技术监督学院,河北保定071000 [2]计量仪器与系统国家地方联合工程研究中心,河北保定071000 [3]河北省计量仪器与系统工程实验室,河北保定071000 [4]保定市计量仪器与系统工程技术研究中心,河北保定071000

出　　处：《计量学报》2022年第3期370-377,共8页Acta Metrologica Sinica

基　　金：国家自然科学基金(61475041);国家科技支撑计划(纵20180318,纵20180319);保定市产业计量工程技术研究中心建设项目(纵20180321)。

摘　　要：近红外光源的稳定性影响近红外技术的可靠程度。提高其电源的稳定性,可提高近红外光源的稳定性,改善实验室近红外技术在气液两相流的应用。使用高精密恒流源为近红外光源供电,进行了实验研究,结果表明:使用高精密恒流源时,近红外光源更稳定,输出电压值也更加稳定可靠,输出电压值的极差在0.12左右,标准差不超过0.00838;而在普通电源所得输出电压的极差在0.16左右,标准差不超过0.02193。The stability of near-infrared(NIR)light source influences the reliability of NIR technology.Improving the stability of NIR power supply can improve the application of NIR technology in gas-liquid two-phase flow in laboratory.According to the experiment,the precise constant current source is used to power the NIR probe,which makes the NIR light source more stable and the output voltage more stable and reliable.The experiment shows that the range of output voltage is about 0.12 and the standard deviation is not more than 0.00838 when using high precision constant current source for power supply.While the range of output voltage obtained from ordinary power supply is about 0.16,and the standard deviation is no more than 0.02193.

关 键 词：计量学 近红外光源 电源稳定性 气液两相流 恒流源 测量不确定度 

分 类 号：TB937[一般工业技术—计量学]