木工宽带砂光机噪声对人体心率的影响

该文从噪声对人体心率影响的角度 ,分析了木工宽带砂光机 (BSG2 713)的现场噪声及其主要频率的单频噪声对工人生理及心理负荷的影响 .该研究采用的方法是 :以正常工作状况下 ,砂光机的噪声为噪声分析源 ,并提取有代表性的实验噪声 ,在安静及噪声暴露的条件下进行人体心率影响实验 ,最后通过噪声对人体心率的影响情况 ,分析砂光机噪声对人体负荷的影响 .该方法与传统噪声评价方法相比 ,强调了影响劳动安全的人体心理负荷问题 ,从生理学和心理学角度来探讨噪声的影响 .结果表明 :在噪声暴露过程中 ,6 7Hz的噪声对人体心理负荷影响最大 ;而 14 2 2Hz的噪声对人体心理影响波动最大 ,且噪声暴露停止后影响仍持续增加 .

Effects of the noise of wide belt sander for woodworking indus try on human heart rate

This paper analyzes the impact of on-the-spot noise and the single frequency noise of the main frequency noises of woodworking machine-sander on workers' physiological and psychological load from the aspect of the noise influencing heart rate. With the noise of the woodworking sander under the usual processing as the noise source, then experimental noises are abstracted. The heart rate experiment is done under two states, namely the noise and the quiet in the laboratory. Finally, the change of human load is analyzed on the basis of the heart rate. The method of heart rate instead of traditional noise level puts more emphasis on workers' psychological load than traditional methods. The noise effect on human body is discussed from the point of psychology and physiology. The results show that the effect of the 67 Hz noise on human body's load is the greater than the other noises during the noise-exposed period and the effect of the 1 422 Hz noise is the greatest and most difficult to recove during the experimental recovery course.