摘要
本文通过将前置放大电路集成模块内嵌于压电陶瓷圆环内,然后将其整体密封获得一种带低噪声前放的声压水听器。本水听器在很大程度上提高了声压水听器的接收灵敏度响应,增大了对远距离微弱信号的探测能力,减少了电缆长度与环境噪声对水听器的影响,具有低频、小体积、高灵敏度、抗干扰能力强等特点,并合理设计了安装法兰,安装更为便捷,可以快速布成各种水听器阵列。测试结果表明:在10~10 k Hz频带内,水听器的接收灵敏度均大于-170 d B,带内起伏小于3 d B。水听器整体一致性小于2 d B。
In this paper, a sound pressure hydrophone with low noise is designed, the preamplifier integrated circuit module is embedded in the piezoelectric ceramic rings, and then the whole seal. To a great extent, the hydrophone improves the receiving sensitivity of the pressure hydrophone, increases the detection ability of the long distance or weak signal, reduces the influence of the cable length and the ambient noise, and has the characteristics of low frequency, small volume, high sensitivity, strong anti-interference capability, and the installation flange is designed reasonably, installation is more convenient, can quickly cloth into a variety of hydrophone array. The test results show that the receiving sensitivity of the hydrophone is larger than-170 d B in the 10~10 k Hz band, and the band fluctuation is less than 3 d B.The overall consistency of hydrophone is less than 2 d B.
引文
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