一种等效40h声级的计算方法探讨

Discussion on computational method for 40h equivalent sound level

对于工作场所噪声“每周40 h等效声级”的标准计算需要提供一周中岗位人员每一个工作班的噪声强度检测结果,这对检测操作要求较高。针对此问题,笔者推导出“等效40 h”计算公式,拟在解决每天噪声相对稳定的的情况下,准确、快速地进行周40 h等效声级计算。笔者对理想状况下,新公式与标准公式“每周40 h等效声级”计算结果进行了验证,并给出了一般情况下不同计算方法产生的误差值。结论是通过该计算公式,可解决噪声相对稳定时非标准工作制(即非每周工作5 d,每天工作8 h)情况下的噪声计算问题,减少因错误套用公式带来的误差,也给监管部门根据当天的检测数据快速进行判定给出了一定依据。

For the standard calculation of "40h equivalent sound level per week" of workplace noise,it was necessary to provide the noise test results of each day in a week,which had high requirements on the test operation. To solve this problem,the author deduced the "40 h equivalent" calculation formula,which was intended to accurately and quickly calculate the weekly 40 h equivalent sound level when the daily noise was relatively stable. The author verified the calculation results of the new formula and the standard formula "40 h equivalent sound level per week",and gave the error values produced by different calculation methods in general. The conclusion was that the calculation formula could solve the problem of noise calculation under the non-standard working system when the noise was relatively stable,reduced the error caused by the wrong application of the calculation formula,and also provided a certain basis for the regulatory authorities to make a quick judgment according to the detection data.