摘要
针对水声通信对带宽的需求,研制了一种金字塔型宽带平面水声换能器。该换能器采用四层纯压电陶瓷块嵌套的方式,实现了带宽的拓展。采用ANSYS有限元软件对单层压电陶瓷和金字塔模型敏感元件进行仿真,得到单层陶瓷块谐振频率随元件厚度的变化规律,并根据仿真结果确定了四层压电陶瓷敏感元件的最优尺寸。将根据最优尺寸设计的四层敏感单元进行嵌套,制作成金字塔型换能器。测试结果表明,金字塔型换能器带宽达到57 kHz,最大发射电压响应为165.8 dB,接受灵敏为-180.7 dB,可以有效扩展带宽并具有很高的灵敏度。
In response to the bandwidth requirements of underwater acoustic communication,this paper has developed a pyramid-shaped broadband planar underwater acoustic transducer.The transducer adopts the nesting method of four pure piezoelectric ceramic blocks to realize the expansion of the bandwidth.The ANSYS finite element software was used to simulate the single-layer piezoelectric ceramic and pyramid-shaped sensitive components,then the law of the resonant frequency of the single-layer ceramic block changed with the thickness of the component was got.According to the simulation results,the optimized size of the four-layer piezoelectric ceramic-sensitive component was determined.Four layers of sensitive units designed according to the optimal size were nested to make a pyramid-shaped transducer.The test results show that the pyramidal transducer has a bandwidth of 57 k Hz,a maximum transmitting voltage response of 165.8 dB,and a receiving sensitivity of-180.7 d B,which can effectively expand the bandwidth and have high sensitivity.
作者
荣畋
王宏伟
于肇贤
惠辉
RONG Tian;WANG Hongwei;YU Zhaoxian;HUI hui(School of Applied Sciences,Beijing Information Science&Technology University,Beijing 100192,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2021年第9期1264-1269,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61771060)
北京市自然科学基金项目(KZ202111232050)。
关键词
水声换能器
宽带
金字塔
嵌套
ANSYS有限元
underwater acoustic transducer
broadband
pyramid
nesting
ANSYS finite element
