基于PVDF压电传感器的机械传感系统设计

2011 International Conference on Control, Automation and Systems Engineering (CASE) Pub Date : 2011-07-30 DOI:10.1109/ICCASE.2011.5997741

Yan-Shen Wang, Yu-xian Gai, Shi-Ming Li

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引用次数: 2

摘要

设计了一种基于PVDF压电传感器的机械传感系统。对PVDF的压电方程进行了研究和简化，以便进行数据分析。详细研究了工频消除算法。A/D变换时采用4次采样，最大限度地降低了50Hz工频引起的噪声。采用巴特沃斯低通滤波器和陷波滤波器进行噪声滤波。该测量系统由PVDF传感器、电荷放大器、信号滤波器、A/D、单片机和LCD组成。并编写了数据采集与处理程序。仿真和实验证明了该系统的有效性。

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Design of Mechanical Sensing System Based on PVDF Piezoelectric Sensor

A mechanical sensing system based on PVDF piezoelectric sensor was designed. Piezoelectric equation of PVDF was studied and simplified for data analysis. The algorithm of power frequency elimination was detailed studied. 4-times sampling was adopted during A/D transformation and the noise induced by 50Hz power frequency was minimized. Butterworth low-pass filter and trap filter was used for noise filtering. The measuring system consisted of PVDF sensor, charge amplifier, signal filter, A/D, MCU and LCD. The data acquisition and processing program was also written. Simulation and experiments proved the effective of this system.

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2011 International Conference on Control, Automation and Systems Engineering (CASE)

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