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为了探讨测量机动车前照灯检测仪发光强度示值误差中各种因素对最终测量结果的影响,基于标准光源和机动车前照灯检测仪的示值进行比对的数学模型,对其测量不确定度来源进行分析,列出方差,灵敏系数及标准不确定的计算公式,从而给出示值误差的测量合成标准不确定度和扩展不确定度,从而探讨各影响量对实际测量结果的影响。
In order to explore the impact of various factors on the final measurement results of the indication error of the luminous intensity of the vehicle headlamp detector, a mathematical model based on the comparison between the indication of the standard light source and the headlamp tester of a motor vehicle is provided. The source of uncertainty is analyzed, and the formulas of variance, sensitivity coefficient and standard uncertainty are listed, and the uncertainty of measurement standard and the uncertainty of expansion are given to discuss the effect of each influence on the actual measurement results .