光轨标定法校准半柱面照度计的测量不确定度评定  

Applicability Analysis of Measurement Uncertainty for Calibrating Semi-Cylindrical Illuminance Meters with the Light Track Calibration Method

作　　者：康品春 KANG Pinchun(Xiamen Institute of Measurement and Testing,Xiamen 361004,China)

机构地区：[1]厦门市计量检定测试院,福建厦门361004

出　　处：《照明工程学报》2025年第2期1-4,共4页China Illuminating Engineering Journal

摘　　要：相较于水平面和垂直面等平面照度,在人行道照明、人脸识别等关注被照物体立体感的场合,半柱面照度指标具有更大的实用性,常用半柱面照度计测量。市面上半柱面照度计照度示值最大允许误差多为±4%,尚无现行校准规范。本文提出采用光轨标定法,使用标准值为1000 cd左右的一级和二级发光强度标准灯校准半柱面照度计,分析评定校准结果的测量不确定度。结果表明在包含因子k=2的情况下,100 lx、50 lx、20 lx、10 lx等半柱面照度校准点示值误差测量结果的扩展不确定度均不超过1.3%,小于半柱面照度计最大允许误差的1/3,可满足半柱面照度参数量值传递的要求。Compared to the illuminance on horizontal and vertical planes,the semi-cylindrical illuminance is more practical in scenarios where the three-dimensionality of illuminated objects,such as sidewalk lighting and facial recognition,is of concern.A semi-cylindrical illuminance meters is commonly used for measurement.The maximum allowable error for illuminance readings from semi-cylindrical illuminance meters on the market is typically±4%,and there is currently no existing calibration standard.This paper proposes using the light track calibration method,employing primary and secondary luminous intensity standard lamps with a standard value of approximately 1000 cd,to calibrate semi-cylindrical illuminance meters and analyze the measurement uncertainty of the calibration results.The results show that,with a coverage factor of k=2,the expanded uncertainty of the measurement error for semi-cylindrical illuminance calibration points at 100 lx,50 lx,20 lx and 10 lx does not exceed 1.3%,which is less than 1/3 of the maximum allowable error for semi-cylindrical illuminance meters.This meets the requirements for the transfer of semi-cylindrical illuminance parameter values.

关 键 词：半柱面照度计 校准 测量不确定度 

分 类 号：TB96[机械工程—光学工程]