空腔结构对压电-声接收传感器输出影响分析  

Analysis of Influence of Cavity Structure on Output of Piezo-Acoustic Receiving Sensor

作　　者：邬正堃 屈晓瑜 卫江娜 WU Zhengkun;QU Xiaoyu;WEI Jiangna(China Aerospace Science and Technology Group Sixth Research Institute No.210 Institute,Xi’an 710065,China)

机构地区：[1]中国航天科工集团第六研究院二一〇所,陕西西安710065

出　　处：《电声技术》2023年第5期39-42,共4页Audio Engineering

摘　　要：在水下探测领域,声接收传感器的封装结构对压电传感器的力电耦合响应起着至关重要的作用。良好的封装结构在一定程度上可以提高传感器的电学响应。基于此,设计了一个包含压电传感器的空腔封装结构模型,并对模型进行仿真,以评估力电耦合响应。利用有限元软件对压电传感器进行模态分析,通过所获得的模态分析结果对自由场和空腔结构进行进一步模拟,评估不同频率下的电压输出。研究结果显示,所设计腔体结构在一定程度上有效提高了模型的电学输出性能。In the field of underwater detection,the packaging structure of acoustic receiving sensor plays an important role in the electromechanical coupling response of piezoelectric sensor.Good packaging structure can improve the electrical response of the sensor to some extent.Based on this,a cavity package structure model including piezoelectric sensor is designed and simulated to evaluate the electromechanical coupling response.The modal analysis of piezoelectric sensor is carried out by finite element software,and the free field and cavity structure are further simulated by the obtained modal analysis results to evaluate the voltage output at different frequencies.The results show that the designed cavity structure effectively improves the electrical output of the model to some extent.

关 键 词：压力声学 有限元软件 压电效应 力电耦合 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]