护听器个人防护值验证技术

本文介绍了关于护听器实际防护值的研究数据,和用于护听器个人防护效果验证的方法,以及3ME-A-RfitTM听力防护验证系统。研究表明,护听器的标称降噪值对其实际防护值的指示性非常差,目前也还没有一个可靠的方法来使用护听器的标称值。3ME-A-RfitTM听力防护验证系统是使用实地真耳内置麦克风(F-MIRE)方法,在实际工作现场中快速、定量地测定护听器在具体使用者身上取得的个人声衰减值(PAR),让安全管理人员对员工实际获得的防护水平有清晰的了解。

Hearing Protection Device Personal Attenuation Rating Validation Technology

In this paper, research data about real-world performance of hearing protection devices （HPDs）, and technologies to validate the personal attenuation of HPDs, and 3M E-A-RfitTM validation system were introduced. Field research suggested, the labeled attenuation data provides poor indication of the real world performance of HPDs, there is no reliable way to use labeled attenuaction data so far. E-A-RfitTM validation system is a quick and accurate method of estimating the personal attenuation rating for a given fitting of a pair of earplugs by using Fieht Mirerophone In Real Ear testing, it helps on clear understanding of the level of protection workers received from an HPD.