电焊工噪声测定不确定度评定  

Uncertainty Evaluation for Measuring Noise Exposure Levels of Welders

作　　者：邱泓[1] 车望军[1] 张浩[2] 刘桂明[1] 雷钫普[1] 白云[1] 

机构地区：[1]云南省昆明市疾病预防控制中心,650228 [2]四川大学华西公共卫生学院

出　　处：《职业与健康》2010年第13期1463-1464,共2页Occupation and Health

摘　　要：目的分析对电焊工噪声暴露水平测定过程中的不确定度,明确影响测定准确性的主要因素。方法找出测定过程中各不确定度分量,计算合成标准不确定度以及扩展不确定度。结果在各分量不确定度中,方向偏差和测量重复性引入的不确定度对测理结果的不确定度的贡献较大。结论噪声测定过程中,要做好对测定对象的分组,提高测定对象的同质性,以降低测量不确定度。[Objective]To analyze the uncertainty in measuring noise exposure levels of welders,and identify the main factors influencing the measurement accuracy.[Methods]Uncertainty components were found. Combined standard uncertainty and expanded uncertainty were calculated.[Results]Of all components,deviation of directivity and measurement reproducibility contributed most to the uncertainty of the test results.[Conclusion]In the measurement process,the grouping of objects should be made well and the homogeneity should be improved to reduce the measurement uncertainty.

关 键 词：噪声 不确定度 合成标准不确定度 扩展不确定度 

分 类 号：R134[医药卫生—劳动卫生]