复合结构压电体系统及其在可穿戴式健康监测中的应用

IF 3.8 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Shuting Wang, Shizhe Lin, Jianglang Cao, Guanglin Li, Peng Fang
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引用次数: 0

摘要

压电驻极体,也称为铁驻极体,具有良好的压电性能,在可穿戴式健康监测中有着广泛的应用。通常情况下,压电极体的细胞结构对其传感性能有着重要的影响,结构的改进和优化将是实现高性能压电极体的可能途径。作者提出了一种复合结构的压电极体系统,其中一层聚丙烯泡沫夹在两层固体聚四氟乙烯之间,从而形成泡沫结构和层状结构压电极体的组合。复合系统薄而灵活,它们可以表现出稳定的电输出,它们在压力下具有相对较宽的线性工作范围,并且具有多次测试的机械可持续性。结果表明,复合系统可以看作是两个组成部分的简单相加,每个组成部分对整个系统的贡献是线性的、独立的。该复合系统的应用潜力已经通过睡眠监测以及颈动脉和桡动脉脉搏记录得到证明,其中许多有用的生理信息,包括呼吸、心跳和脉搏细节可以从复合系统获得的信号中提取出来。可以提供一种对未来便携式和可穿戴应用非常有竞争力的柔性传感器系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A compound-structured piezoelectret system and its applications in wearable health monitoring

A compound-structured piezoelectret system and its applications in wearable health monitoring

Piezoelectrets, also called ferroelectrets, can exhibit promising piezoelectric properties and have plenty of applications in wearable health monitoring. Usually, the cellular structure of piezoelectrets is of outstanding importance for their sensing properties, and structure improvement and optimisation would be a possible way to realise high-performance piezoelectrets. The authors proposed a compound-structured piezoelectret system, where a layer of polypropylene foam was sandwiched between two layers of solid polytetrafluoroethylene, resulting in a combination of a foam-structured and a layer-structured piezoelectrets. The compound systems are thin and flexible, they can exhibit stable electrical outputs, they have relatively broader linear working range under pressure, and promising mechanical sustainability for multiple testing. The results reveal that the compound system can be considered as a simple addition of both components, and each component contributes linearly and independently to the whole system. The application potential of this proposed compound system has been demonstrated by sleep monitoring together with carotid and radial pulse recordings, where many useful physiological information including breath, heartbeat, and pulse details can be extracted from the signals acquired by the compound system. A type of flexible sensor system that is very competitive for future portable and wearable applications may be provided.

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来源期刊
IET Nanodielectrics
IET Nanodielectrics Materials Science-Materials Chemistry
CiteScore
5.60
自引率
3.70%
发文量
7
审稿时长
21 weeks
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