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首页> 外文期刊>Sensors and Actuators, A. Physical >Durable sensors for measurement of foot plantar pressure with piezoelectric polyvinylidene fluoride foil
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Durable sensors for measurement of foot plantar pressure with piezoelectric polyvinylidene fluoride foil

机译：耐用的传感器，可通过压电聚偏二氟乙烯箔片测量脚底压力

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This paper presents application of polyvinylidene fluoride (PVDF) foil for sensors of foot plantar pressure for measurements in natural conditions (i.e. outside laboratory). The material has been evaluated for this application based on investigation of material resistivity, current and activation energy of electret depolarization process, and relationship between pressure and electrical signal. The investigation shows that PVDF foils can operate at temperatures up to 85 degrees C, have high activation energy of 5.2 eV and a linear dependence between pressure and piezoelectric signal, which makes them suitable candidates for foot plantar pressure transducers. Influence of foil stretching is eliminated via a design of the shoe insole, which prevents deformations. Design of an input amplifier which eliminates pyroelectric effect is also presented. For applications in measuring foot plantar pressure, sensor calibration can be eliminated by placing several pressure sensors in the shoe insole and expressing pressure as relative values between sensors. The paper also describes a wireless system for measurement of foot plantar pressure, and obtained measurements. (C) 2016 Elsevier B.V. All rights reserved.
机译：本文介绍了聚偏二氟乙烯（PVDF）箔在足底压力传感器在自然条件下（即实验室外）进行测量的应用。根据对材料的电阻率，驻极体去极化过程的电流和活化能以及压力与电信号之间的关系的研究，对该材料进行了评估。研究表明，PVDF箔片可以在高达85摄氏度的温度下工作，具有5.2 eV的高活化能，并且压力与压电信号之间具有线性相关性，这使其成为脚底压力传感器的合适候选者。鞋垫的设计消除了箔片拉伸的影响，可防止变形。还提出了消除热电效应的输入放大器的设计。对于测量足底压力的应用，可以通过在鞋垫中放置几个​​压力传感器并将压力表示为传感器之间的相对值来消除传感器校准。本文还描述了一种无线系统，用于测量足底压力并获得测量结果。 （C）2016 Elsevier B.V.保留所有权利。

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