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  4. EN ISO 11204:2010

EN ISO 11204:2010 Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204:2010)

声学 - 机械和设备发出的噪声 - 确定工作站和其他指定位置处的排放声压级 以应用精确的环境校正（ISO 11204:2010）

基本信息

标准号
EN ISO 11204:2010
标准状态
现行
发布单位或类别
国际组织-欧洲标准化委员会(IX-CEN);
发布日期
2010-05-15
实施日期
2010-05-15
废止日期
-
CCS分类
A59 综合 - 计量 - 声学计量
ICS分类
17.140.20 声学和声学测量 - 机器和设备的噪声

研制信息

起草单位
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起草人
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归口单位
CEN/TC 211-

摘要

ISO 11204:2010 specifies a method for determining the emission sound pressure levels of machinery or equipment, at a work station and at other specified positions nearby, in any environment which meets certain qualification requirements. A work station is occupied by an operator and may be located in open space, in the room where the source under test operates, in a cab fixed to the source under test, or in an enclosure remote from the source under test. One or more specified positions may be located in the vicinity of a work station, or in the vicinity of an attended or unattended machine. Such positions are sometimes referred to as bystander positions.Emission sound pressure levels are determined as A-weighted levels. Additionally, levels in frequency bands and C-weighted peak emission sound pressure levels can be determined in accordance with ISO 11204:2010, if required.A method is given for determining a local environmental correction (subject to a specified limiting maximum value) to be applied to the measured sound pressure levels to exclude the effects of reflections from reflecting surfaces other than the plane on which the source under test is placed. This correction is based upon the mean sound pressure level on a measurement surface, the sound pressure level measured at a specified position, and either an environmental correction or the equivalent absorption area of the test room.With the method specified in ISO 11204:2010 results of accuracy grade 2 (engineering grade) or accuracy grade 3 (survey grade) are obtained. Corrections are applied for background noise and, as described above, for the acoustic environment. Instructions are given for the mounting and operation of the source under test and for the choice of microphone positions for the work station and for other specified positions. One purpose of the measurements is to permit comparison of the performance of different units of a given family of machines, under defined environmental conditions and standardized mounting and operating conditions.The method specified in ISO 11204:2010 is suitable for all types of noise (steady, non-steady, fluctuating, isolated bursts of sound energy, etc.) defined in ISO 12001.The method specified in ISO 11204:2010 is applicable to all types and sizes of noise sources.The type of test environment influences the accuracy of the determination of emission sound pressure levels. ISO 11204:2010 is applicable to an indoor or outdoor environment with one or more reflecting planes present, meeting specified requirements. These requirements on the room are less strict than those of ISO 11201, in particular regarding the acoustical quality of the environment.ISO 11204:2010 is applicable to work stations and other specified positions where emission sound pressure levels are to be determined.Appropriate positions where measurements may be made include the following: a) work station located in the vicinity of the source under test; this is the case for many industrial machines and domestic appliances; b) work station within a cab which is an integral part of the source under test; this is the case for many industrial trucks and earth-moving machines; c) work station within a partial or total enclosure (or behind a screen) supplied by the manufacturer as an integral part of the source under test; d) work station partially or totally enclosed by the source under test — this situation may be encountered with some large industrial machines; e) b ISO 11204:2010规定了在符合某些资格要求的任何环境中，在工作站和附近其他指定位置确定机械或设备的排放声压级的方法。工作站由操作者占用，并且可以位于开放空间，被测源所在的房间中，在固定到被测源的驾驶室中或位于远离被测源的外壳中。一个或多个指定的位置可以位于工作站附近，或者位于有人或无人看管的机器附近。这种位置有时被称为旁观者位置。排放声压级别确定为A加权水平。此外，如果需要，可以根据ISO 11204:2010确定频段中的电平和C加权峰值发射声压级。给出了一种用于确定要应用于测量声压级的局部环境校正（受限于规定的限制最大值）的方法，以排除来自被放置源的平面以外的反射表面的反射的影响。该校正基于测量表面上的平均声压级，测量的声压级 展开▼

关联标准

代替如下标准
1.EN ISO 11204:2009 。
引用下列标准
1.IEC 60942:2003 Electroacoustics - Sound calibrators。
2.IEC 61260 AMD 1:2001 。
3.IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters。
4.IEC 61672-1:2002 。
5.ISO 12001 。
6.ISO 3744 。
7.ISO 3746 。
8.ISO 5725-1 。
9.ISO 5725-1/Cor 1 。
10.ISO 5725-2 。
11.ISO 5725-2/Cor 1 。
12.ISO 5725-3 。
13.ISO 5725-3/Cor 1 。
14.ISO 5725-4 。
15.ISO 5725-5 。
16.ISO 5725-5/Cor 1 。
17.ISO 5725-6 。
18.ISO 5725-6/Cor 1 。
19.ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)。

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