EL15-1CH型加热风速传感器校准结果不确定度评定分析  

Uncertainty analysis of calibration results of EL15-1CH heating wind speed sensor

作　　者：刘希林[1] 梁振清 晏敏[1] 李强[1] Liu Xilin;Liang Zhenqing;Yan Min;Li Qiang(Guangxi Meteorological Technical Equipment Center,Nanning 530022,China)

机构地区：[1]广西壮族自治区气象技术装备中心,南宁530022

出　　处：《气象研究与应用》2022年第2期74-79,共6页Journal of Meteorological Research and Application

基　　金：广西气象科研计划项目(桂气科2022M18);广西壮族自治区气象技术装备中心自立科研项目(ZBKY202202)。

摘　　要：为确保EL15-1CH型加热风速传感器所测风速准确可靠,合理表征传感器的量值,需要对校准结果进行不确定度评定。基于GUM方法,建立数学评定模型,首先对各类输入量引起的不确定度分量进行评定,再计算合成标准不确定度以及扩展不确定度。结果表明,在数学模型中引入风速传感器重复性、读数分辨力、计量标准数字压力计、计量标准皮托静压管、空气密度变化、风洞流场稳定性与均匀性等7种不确定度分量,推算出的合成标准不确定度以及扩展不确定度分析评定,经过传递比较法对测试数据分析验证结果是可信的。To ensure the accuracy and reliability of the wind speed measured by the EL15-1CH heating wind speed sensor and the reasonable characterization of the sensor value,it is necessary to evaluate the uncertainty of the calibration results.In this paper,a mathematical evaluation model was established based on the GUM method.Firstly,the uncertainty components caused by various inputs were evaluated,and then the combined standard uncertainty and expanded uncertainty are calculated.Seven kinds of uncertainty components were introduced into the mathematical model,such as the repeatability of the wind speed sensor,the reading resolution,the measurement standard digital pressure gauge,the measurement standard Pitot static pressure tube,the change of air density,and the stability and uniformity of the wind tunnel flow field.The calculated synthetic standard uncertainty and the expanded uncertainty were analyzed and evaluated.The test data were analyzed and verified by the transfer comparison method,and the results were reliable.

关 键 词：风速传感器 GUM 不确定度 

分 类 号：P414.7[天文地球—大气科学及气象学]