基于高功率电磁脉冲的深海脉冲声源仿真和实验研究  

Principle Research on Pulsed Sound Source in Deep Sea Based on High-Power Electromagnetic Pulse

作　　者：谢晋兴 张永亮[1] 江敏 江彪 郑江龙 刘丹 王宜志 黄逸凡 XIE Jinxing;ZHANG Yongliang;JIANG Min;JIANG Biao;ZHENG Jianglong;LIU Dan;WANG Yizhi;HUANG Yifan(Institute of Advanced Materials Science and Engineering,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Submarine Seismograph Equipment and Technology Engineering Laboratory,Southern University of Science and Technology,Shenzhen 518055,China)

机构地区：[1]中国科学院深圳先进技术研究院先进材料科学与工程研究所,深圳518055 [2]南方科技大学海底地震仪设备与技术工程实验室,深圳518055

出　　处：《集成技术》2021年第2期98-108,共11页Journal of Integration Technology

基　　金：深圳市科技研发资金项目(JCYJ20180507182200750);广东省促进经济发展专项项目(GDME-2018D004)。

摘　　要：工作性能稳定且方便平台搭载的高功率脉冲声源对于深海近海底地震勘探至关重要。该文研究了一种基于高功率电磁脉冲原理的深海脉冲声源,采用Comsol多物理场建模仿真、大电流测试和高速成像等手段,深入研究了高功率脉冲电路、线圈负载放电电流、电流激励的电磁力,以及电磁力驱动的发射板在空气介质中的振动特性,验证了所建立模型的准确性。通过不同水静压条件下的发射板振动高速成像发现,发射板的振动幅值随着水静压的增大而略有减小,振动频率不受水静压影响,从而验证了该类型换能器能够满足深水工作的条件。It is very important for near-seabed seismic exploration in deep sea that the pulsed sound source has the merits as following: good performance(sound source level and main frequency) less affected by hydrostatic pressure, long working lifetime and easy to be carried by deep sea platform system. In this paper, a deep-sea pulse sound source is developed based on high-power electromagnetic pulse. The key basic problems such as high-power pulse circuit, discharge current in coil load, electromagnetic force excited by current and plate vibration characteristics(amplitude and frequency) excited by electromagnetic force in air medium are investigated by means of Comsol multi-physical simulation, high-current testing and high-speed imaging. Through the high-speed imaging of the plate vibration under different hydrostatic pressure conditions, it is found that the amplitude of the plate vibration decreased slightly with the increase of hydrostatic pressure, and the vibration frequency is not affected by hydrostatic pressure, thus verifying the technical feasibility of this type of transducer working in deep water.

关 键 词：深海声源 脉冲声源 电磁脉冲 

分 类 号：P754[天文地球—海洋科学]