| 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 |
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| 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: |
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