聚焦换能器焦域声场扫描路径规划及测量  

Scanning Path Planning and Measurement of Focused Transducer Focal area sound field

作　　者：段雪亮 郑慧峰 彭圆 郭忠晓 朱婕 DUAN Xue-liang;ZHENG Hui-feng;PENG Yuan;GUO Zhong-xiao;ZHU Jie(College of Metrology&Measurement Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China;Jiaxing Metrological Verification and Testing Institute,Jiaxing,Zhejiang 314050,China;ZF Transmission Technology(Jiaxing)Co.,Ltd.,Jiaxing,Zhejiang 314000,China)

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018 [2]嘉兴市计量检定测试院,浙江嘉兴314050 [3]采埃孚传动技术(嘉兴)有限公司,浙江嘉兴314000

出　　处：《计量学报》2023年第7期1100-1106,共7页Acta Metrologica Sinica

基　　金：国家重点研发计划(2017YFF0205004);浙江省自然科学基金(LY17E050015,LQ20A040007);浙江省重点研发计划(2022C01002);浙江省质量技术监督系统科研计划(20180103);浙江省‘仪器科学与技术’重中之重学科人才培育项目(JL150506);浙江省教育厅科研资助(Y201942513);浙江省大学生科研创新团队资助(2021R409052)。

摘　　要：聚焦换能器的焦域声压扫描是其声学特性计量的重要步骤,而传统的扫描路径测量效率较低,提出基于聚焦声场分布特征的扫描路径规划方法。首先给出了实验方案和原理,分析了聚焦换能器声场的焦域声场特性,然后对聚焦换能器进行有限元仿真分析,获得焦域声场的声压分布,根据声场同心圆分布特性,以焦点处为0 dB声压级,获得不同声压级对应区域作为水听器扫描特征区域。最后,搭建了实验系统,实验结果表明,-6 dB的焦域长度和宽度等参数均与理论值、传统机械测量机构的测量值一致,保证了测量精度并且有效提高了测量效率。The focus area sound pressure scanning of a focused transducer is an important step in the measurement of its acoustic characteristics,while the traditional scanning path measurement is inefficient.A scanning path planning method based on the distribution characteristics of the focused sound field is proposed.First,the experimental scheme and principle are given,the focus area sound field characteristics of the focused transducer sound field are analyzed,and then finite element simulation analysis is carried out for the focusing transducer,according to the concentric circle distribution characteristics of the sound field,the corresponding areas of different sound pressure levels are obtained as the hydrophone scanning characteristic areas with the focus being 0 dB sound pressure level.Finally,an experimental system is built,the experimental results show that the parameters such as-6 dB focal length and width are consistent with the theoretical values and the measured values of traditional mechanical measuring mechanisms,the measurement accuracy is guaranteed and the measurement efficiency is effectively improved.

关 键 词：计量学 声压分布 聚焦换能器 焦域 扫描路径规划 手眼系统 

分 类 号：TB95[一般工业技术—计量学]