【摘要】 浅海水听器是一种利用压电敏感元件接受地质信号将机械震动转换为电信号的机电装置,是应用于海洋地震勘探以及工程测量领域的专用传感器。浅海水听器作为海洋地震勘探的关键设备之一,其性能直接关系到地震数据采集的质量。因此,浅海水听器的技术和应用一直倍受广大物探工作者的关注。目前,勘探市场上的水听器灵敏度普遍偏低,在某种程度上制约着勘探中微弱地震信号的数据采集。介绍了一种采用四块圆片状压电陶瓷敏感元件配接变压器的浅海水听器,研究了该浅海水听器的结构和等效电路。在相同条件下,通过与圆筒状水听器和配接前置放大器的水听器的比较分析,表明了采用此种结构的水听器在灵敏度上的优越性,提高了地震数据采集质量,以满足现代海洋勘探技术要求。更多还原

【Abstract】 The neritic hydrophone is a device,using piezoelectric sensing element to receive geologic signal and transform mechanical vibration signal to electricity signal.It is a special sensor in the ocean seismic exploration and engineering measure field.The neritic hydrophone is the key part of ocean seismic exploration,and its property has direct influence on the quality of seismic data acquisition.So the technique and application of neritic hydrophone are paid more attention by geophysicist.Nowadays the hydrophone of the exploration market has low sensitivity and it restricts seismic data acquisition of feeble signal to some extent.The neritic hydrophone,using four circular piezoceramicses sensing element to connect transformer,is introduced in this paper.Also the structure and equivalent circuit of the hydrophone are researched.Comparing the neritic hydrophone with cylindraceous hydrophone and doing the comparison with another one with preamplifier in it in the same condition,it turns out to be that this structural hydrophone is superior in sensitivity.So it improves the quality of seismic data acquisition and will achieve the modern ocean exploration technology.更多还原