跨冰层声信号拾取装置中耦合腔的设计与研究  

Design and study of coupling cavity in trans-ice acoustic signal pick-up device

作　　者：张子牧 朱广平[1] 陈超日 李磊 Zhang Zimu;Zhu Guangping;Chen Chaori;Li Lei(College of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学水声工程学院,哈尔滨150001

出　　处：《仪器仪表学报》2024年第9期219-226,共8页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(52371347);中国高等教育学会高等教育科学研究规划课题(23SZH0210)项目资助。

摘　　要：针对现有极地冰层声学探测技术在探测带宽与布署便捷性的局限,围绕一种跨冰层水下声信号拾取装置耦合腔部分的设计与测试展开研究。此装置通过耦合腔,即一个包有声固耦合液的柔性外壳,将冰层中的弹性波转换为耦合液中的压力波,并通过浸于耦合液中的水听器接收声压信号。首先,通过理论分析确定将聚氨酯作为耦合腔的材料;然后,利用仿真软件模拟对耦合腔的几何参数进行了探究;最后,实施了水池实验和低温条件测试,并进一步确定了耦合腔的几何参数对跨冰层探测效果以及装置可靠性的影响。测试结果表明,耦合腔的侧壁厚度是影响装置的跨冰层水声信号拾取效果以及低温适应性的重要参数。In view of the limitations of the existing polar ice acoustic detection technology in terms of detection bandwidth and deployment convenience,this article focuses on the design and testing of the coupling cavity part of a cross-ice underwater acoustic signal pickup device.The device converts elastic waves in the ice into pressure waves in the coupling fluid through a coupling chamber,a flexible shell with an acoustic-solid coupling fluid,and receives the sound pressure signal through a hydrophone immersed in the coupling fluid.Firstly,the material of the coupling cavity is selected through theoretical analysis.Then,the geometric parameters of the coupling cavity are explored by simulation software simulation.Finally,the pool experiment and low-temperature condition test are carried out,and the influence of the geometric parameters of the coupling cavity on the trans-ice detection effect and the reliability of the device is further determined.The test results show that the thickness of the sidewall of the coupling cavity is an important parameter affecting the cross-ice underwater acoustic signal pickup effect and low-temperature adaptability of the device.In view of the limitations of the existing polar ice acoustic detection technology in terms of detection bandwidth and deployment convenience,this paper focuses on the design and testing of the coupling cavity part of a cross-ice underwater acoustic signal pickup device.The device converts elastic waves in the ice into pressure waves in the coupling fluid through a coupling chamber,a flexible shell with an acoustic-solid coupling fluid,and receives the sound pressure signal through a hydrophone immersed in the coupling fluid.Firstly,the material of the coupling cavity was selected through theoretical analysis,and then the geometric parameters of the coupling cavity were explored by simulation software simulation.Finally,the pool experiment and low temperature condition test were carried out,and the influence of the geometric parameters of the coupling cavity on

关 键 词：耦合腔 跨冰层探测 声信号拾取 低温条件 

分 类 号：TH825[机械工程—仪器科学与技术]