| PVDF薄膜传感器前置放大模块设计及实验研究 |
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| 引用本文： | 韩星晨,吴先梅,丁贝贝,陈家熠.PVDF薄膜传感器前置放大模块设计及实验研究[J].压电与声光,2018,40(2):187-191. |
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| 作者姓名： | 韩星晨 吴先梅 丁贝贝 陈家熠 |
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| 作者单位： | (1.中国科学院 声学研究所 声场声信息国家重点实验室,北京 100190；2.中国科学院大学， 北京100049) |
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| 基金项目： | 国家自然科学基金资助项目（11674351） |
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| 摘 要： | 聚偏二氟乙烯(PVDF)压电薄膜具有良好的压电效应,被广泛应用于振动测量等领域。该文通过分析PVDF压电薄膜的电路模型,设计了与之配套的前置放大模块,并对该模块进行了理论分析和实验测试,测试结果与理论相符。应用PVDF薄膜配合设计的前置放大模块对圆管内流场信息进行了对比试验。试验结果表明,PVDF压电薄膜对于管内流场的测量在低频区域优于加速度计,可测量到丰富的低频成分,为分析管内的流场信息提供了良好的实验基础。
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| 关 键 词： | 聚偏二氟乙烯(PVDF) 换能器 前置放大 噪声计算 圆管流体 |
Design and Experimental Research on Preamplifier Module for PVDF Piezoelectric Film Sensors |
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| HAN Xingchen,WUXianmei,DING Beibei,CHEN Jiayi.Design and Experimental Research on Preamplifier Module for PVDF Piezoelectric Film Sensors[J].Piezoelectrics & Acoustooptics,2018,40(2):187-191. |
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| Authors: | HAN Xingchen WUXianmei DING Beibei CHEN Jiayi |
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| Abstract: | Thepolyvinylidene fluoride (PVDF) piezoelectric film has good piezoelectric effect and is widely used in the field of vibration measurement and so on.In this paper, by analyzing the circuit model of PVDF piezoelectric thin film, a preamplifier module matching the circuit is designed, analyzed theoretically and testedexperimentally in this paper. The testing results are consistent with theoretical ones.The contrast test of the flow field information of the circular tube was carried out by using the preamplifier modulewith PVDF piezoelectric film.The experimental results show that the measurement of the internal flow field by using PVDF piezoelectric film is superior to the accelerometer at the low frequency range.It can measure abundant lowfrequency components, and provide a good experimental basis for analyzing the flow field in the tube. |
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| Keywords: | polyvinylidene fluoride(PVDF) transducer pre amplification noise calculation pipe fluid |
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