文章摘要
王丽坤,李光,王光灿.灵敏度可调式压电薄膜水听器[J].,2003,22(2):35-38
灵敏度可调式压电薄膜水听器
A piezoelectric film hydrophone with adjustable sensitivity
  
中文摘要:
      本文介绍一种灵敏度可调式压电薄膜水听器。采用PVDF薄膜作为换能材料,聚碳酸脂作为背衬,薄膜粘贴在背衬的内壁,软性的背衬在声压的作用下形变,从而带动薄膜形变,产生电信号输出。水听器内装有前置放大器,调节放大器的负载电阻可调节水听器的灵敏度。灵敏度变化范围为-190dB——175dB,频率响应100Hz-16kHz。
英文摘要:
      This paper presents a piezoelectric film hydrophone with adjustable sensitivity. It uses PVDF film as a sensing material, which is pasted inside the wall of a cylinder made of a flexible organic material. When sound pressure is applied to the flexible cylinder, the PVDF transfers the sound pressure to electric charge. There is a preamplifier in the hydrophone. The sensitivity of the hydrophone can be controlled by adjusting a loadresistance in the preamplifier, the range of adjustable sensitivity is -190 dB——175 dB(re 1 V/μPa), and the frequency response is 100 Hz - 16kHz.
DOI:10.11684/j.issn.1000-310X.2003.02.009
中文关键词: 水听器  PVDF薄膜  灵敏度可调
英文关键词: Hydrophone  PVDF film  Adjustable sensitivity
基金项目:
作者单位
王丽坤 北京信息工程学院 北京 100101 
李光 北京信息工程学院 北京 100101 
王光灿 北京信息工程学院 北京 100101 
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