Abstract:

Abstract:Objective Uncertainty is the range of measures in which the measured true value is measured, and it is a scientific description of the degree of uncertainty affected by the measurement error. This paper introduces the method of measuring uncertainty of noise measurement in laboratory animal housing facilities. Method Use AWA5636-2 sound level meter to measure the noise of different area and different number of samples. The location of the sample is set according to the requirements of GB 14925—2010, a total of 5 measurements, and the detection result is reported as the maximum value of the noise in the detection area. Result The expansion uncertainty under different detection requirements is 2. 6 dB ( A) . Conclusion The uncertainty of noise mainly stems from the maximum tolerance and the resolution of the sound level meter, and the sound level meter should be used according to the method prescribed by the sound level meter and the detection standard to reduce the measurement uncertainty of the detection results.

摘要：

摘要:目的 不确定度是表征被测量的真值所处的量值范围,它是对测量结果受测量误差影响不确定程度的科学描述。 本文介绍了实验动物设施噪声测量值的测量不确定度评定方法。 方法 使用 AWA5636-2 声级计测定不同面积、不同采样点数量的噪声。 采样点位置按 GB 14925—2010 要求设置,共测量 5 次,检测结果以检测区域噪声的最大数值进行报告。 结果 不同检测要求下的扩展不确定度均为 2. 6 dB( A) 。 结论 噪声的不确定度主要源于声级计最大允差和声级计分辨率,检测时应按照声级计和检测标准规定的方法使用声级计,以减小检测结果的测量不确定度。