PIEZOELECTRICALLY AND CAPACITIVELY INTEGRATED WEARABLE DEVICE WITH STRETCHABLE ABILITY FOR MONITORING RAPID CHANGE IN GAIT AND PRECISELY STEP COUNTING

被引：0

作者：

Feng, Guo-Hua ^{[1
,2
]}

Chiang, Cheng-Yen ^{[3
]}

机构：

[1] Natl Tsing Hua Univ, Dept Power Mech Engn, Hsinchu, Taiwan

[2] Natl Tsing Hua Univ, Inst Nano Engn & MicroSyst, Hsinchu, Taiwan

[3] Natl Chung Cheng Univ, Dept Mech Engn, Chaiyi, Taiwan

来源：

2021 21ST INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS) | 2021年

关键词：

Piezoelectric film; gait; step counting; stretchable; wearable device;

D O I：

10.1109/TRANSDUCERS50396.2021.9495702

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a cost-effective and simple structured lead zirconate titanate (PZT) film-based wearable device for smartly monitoring gait and pace count. The device possesses the interconnected structures of serpentine-shaped strips and square nodes, which causes the large stress and strain gradients when the external force is applied to the terminal nodes of the device. The bimorph configuration of metal/PZT/metal thin-film makes the wearable device thinner than a regular paper. This device responses to the strain with simultaneously piezoelectric and capacitive signal outputs. By attaching this device to the skin around human knee joint with athletic tape laminate units, the information of step counting and rapid change in gait of the walking person could be precisely obtained by the capacitive and piezoelectric detections, respectively. The design, fabrication and characterization of the developed device are described in the text. A subject wears the device to walk on a treadmill with different speed settings of 3 km/h and 9 km/h are performed. The resulting signals successfully demonstrate the device functionality of monitoring gait and counting steps.

引用

页码：1448 / 1451

页数：4