Kim Donghyun, Roh Yongrae
School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.
Sensors (Basel). 2023 Nov 10;23(22):9086. doi: 10.3390/s23229086.
So far, cymbal transducers have been developed primarily for transmitting purposes, and even when used for receiving, the focus has been mostly on improving the receiving sensitivity. In this study, we developed a cymbal hydrophone with a higher sensitivity and a wider bandwidth than other existing hydrophones. First, the initial structure of the cymbal hydrophone was established, and then the effects of structural variables on the hydrophone's performance were analyzed using the finite element method. Based on the analysis results, the structure having the highest sensitivity and widest bandwidth, with a receiving voltage sensitivity level above a certain threshold, was derived using optimal design techniques. A prototype of the cymbal hydrophone with the designed structure was fabricated, and its performance was measured, validating the effectiveness of the design by comparing the measurement results with the design values. The developed cymbal hydrophone is expected to be utilized in various underwater precision measurements, as it possesses a significantly broader reception frequency bandwidth when compared with other hydrophones used for the same purpose.
到目前为止，钹式换能器主要是为发射目的而开发的，即使在用于接收时，重点也大多放在提高接收灵敏度上。在本研究中，我们开发了一种比其他现有水听器具有更高灵敏度和更宽带宽的钹式水听器。首先，建立了钹式水听器的初始结构，然后使用有限元方法分析了结构变量对水听器性能的影响。基于分析结果，利用优化设计技术得出了具有最高灵敏度和最宽带宽且接收电压灵敏度水平高于特定阈值的结构。制造了具有设计结构的钹式水听器原型，并对其性能进行了测量，通过将测量结果与设计值进行比较来验证设计的有效性。所开发的钹式水听器有望用于各种水下精密测量，因为与用于相同目的的其他水听器相比，它具有明显更宽的接收频率带宽。
