计量学报2024，Vol.45Issue(4)：565-572,8.DOI:10.3969/j.issn.1000-1158.2024.04.16
振动液柱管中不同尺度水听器灵敏度补偿方法
Sensitivity Compensation Method for Hydrophones with Different Scales in Vibrating Liquid Column Tube
摘要
Abstract
A sound field model in the tube was established using COMSOL simulation software for different scales of spherical and cylindrical hydrophones.The interference of different scales of hydrophones on the sound field was analyzed,and the pressure sensitivity of different scales of hydrophones was compensated and corrected accordingly.The hydrophones of different scale were calibrated using a vibrating liquid column calibration device in the frequency band of 100～1000Hz,and the comparison results with the compensated hydrophone sensitivity value indicated that the size of the hydrophone affects the distribution of the surrounding sound field,resulting in uneven distribution of the sound field in the tube.When the size of the sensitive element is close to the inner diameter of the acoustic tube,the interference of the cylindrical hydrophones in the very low frequency band is close to 2.28 dB,and the interference in the high frequency band is up to 5 dB.And the cylindrical hydrophone of the same size had greater interference to the sound field than the spherical hydrophone.The sensitivity uncertainty of the hydrophone after compensation is within 0.52 dB,which meets the requirements of the calibration of the vibrating liquid column method.关键词
声学计量/振动液柱法/声压灵敏度/圆管水听器/球型水听器/不确定度Key words
acoustics metrology/calibration with a vibrating column of liquid/pressure sensitivity/cylindrical hydrophone/spherical hydrophone/uncertainty分类
通用工业技术引用本文复制引用
解建宇,王月兵,赵鹏,张凯,王明威..振动液柱管中不同尺度水听器灵敏度补偿方法[J].计量学报,2024,45(4):565-572,8.基金项目
国家重点研发计划(2022YFF0607505) （2022YFF0607505）
国防军工计量"十三五"科研计划(JSJL2018207B007) （JSJL2018207B007）
