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文章以喷射虹吸式坐便器为研究对象,按照国标GB/T 3768-1996《声学声压法测定噪声源声功率级反射面上方采用包络测量表面的简易法》中的声学通用性导则,在分析坐便器冲洗噪声产生机理和传播途径的基础上,依据包络声源测试原理,探索建立了平行六面体测量表面声学监测数学模型,明确规定了测量表面、测点阵列、测试参数、测试环境、测试步骤、安装条件、仪器设备、数据处理和不确定度评定等一系列关键技术环节,并通过实验对技术方案的科学性和可行性进行验证。研究表明,上述实验方法的重复性标准偏差满足相关标准要求,能够为规范坐便器冲洗噪声监控提供检测技术支撑。
In this paper, the jet siphon toilet as the research object, according to the national standard GB / T 3768-1996 “Acoustics sound pressure method of noise source sound power level reflection surface above the envelope measurement of surface simple method” in the acoustic general guidelines, Based on the analysis of the generating mechanism and transmission path of toilet flushing noise, the mathematical model of surface acoustic monitoring of parallelepiped measurement is established based on the principle of envelope sound source testing. The measuring surface, measuring point array, testing parameters and testing environment , Test procedures, installation conditions, equipment, data processing and evaluation of uncertainty and a series of key technical aspects, and through experiments on the scientific and technical feasibility verification. The research shows that the repeatability standard deviations of the above experimental methods meet the requirements of relevant standards and can provide the testing technical support for standard flushing toilet flushing noise monitoring.