Pulse Monitoring by Sol-Gel Composite Flexible Piezoelectric Sensors

被引：3
|
作者：
Ikari, Takahiko [1 ]
Kurose, Shugo [1 ]
Igasaki, Tomohiko [1 ]
Kobayashi, Makiko [1 ]
机构：
[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto, Japan
来源：
2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2014年
关键词：
piezoelectric sensor; pulse monitoring; sol-gel composite; signal to noise ratio;
D O I：
10.1109/ULTSYM.2014.0516
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Pulse monitoring at home would be effective to maintain personal heath without increasing medical cost and development of the low cost pulse monitoring sensor is desired. Conventional PVDF sensors were too flexible so that ringing effect might not be ignorable and it would resulted in low signal to noise ratio (SNR). Piezoelectric films made by sol-gel composite itself was flexible and it could have less ringing effect so that SNR could be higher. PZT/PZT films with evaporated aluminum top electrode were fabricated onto various thickness stainless steel substrate in order to optimize the device design. For d(33) measurement result, piezoelectric film thickness correlated highly with d(33) value, whereas substrate thickness showed poor correlation. Pulse measurements on the wrist were attempt by PZT/PZT piezoelectric film sensors and PVDF film sensor and in several configurations, PZT/PZT sensors presented higher SNR than that of PVDF sensor.
引用
收藏
页码：2071 / 2074
页数：4
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