动力游艇操作员声压级曝露测量程序

[中文适用范围]： “本 SAE 标准制定了确定操作员占空比声压级 Lodc 的程序，根据船用发动机占空比研究确定，长度达 24 m 的动力休闲船的操作员在典型操作过程中会暴露于该声压级 Lodc。本文件描述了仪器@所需的校准程序@测试地点@“标准飞行器”的规格@飞行器操作条件@麦克风定位@测试程序@每种占空比模式的发动机转速以及用于计算占空比算子的公式和表格耳声压级。为了跟上技术进步以及其他国际标准和实践的步伐，本文件可能会发生变化。本次修订的变化：应用本文件时进行的声压级测量基于五模式船用发动机工作循环而不是单个发动机转速。需要进行计算才能获得工作循环操作员耳声压级 (Lodc)。型式试验的规定与标准工艺的规范一起提供。” [外文原描述]： This SAE Standard establishes the procedure for determining the operator duty cycle sound pressure level L odc to which operators of powered recreational craft up to 24 m in length are exposed during typical operation as determined by marine engine duty cycle studies. This document describes the instrumentation, the required calibration procedures, the test site, the specifications for “standard craft”, the craft operating conditions, microphone positioning, test procedure, engine speeds for each of the Duty Cycle modes and the formula and table for calculating the Duty Cycle operator ear sound pressure level.This document is subject to change to keep pace with technical advances as well as other international StandardDetails and practices.Changes in this Revision: The sound pressure level measurements performed while applying this document are based on the Five-Mode Marine Engine Duty Cycle instead of a single engine speed. A calculation is required to obtain the Duty Cycle operator ear sound pressure level (L odc ). Provisions for type testing are provided along with specifications for Standard Craft.Cross Reference: ANSIS1.1,ANSIS1.13,ANSIS1.4,IEC60942,IEC61672-1,IEC61672-2,IMED17F/05,ISO8178/4,ISO8665,ISO8666,J1970_201802,J2005_201806,J34_201806