Wrist Pulse Detection System Based on Changes in the Near-Field Reflection Coefficient of a Resonator

被引：14

作者：

An, Yong-Jun ^{[1
]}

Yun, Gi-Ho ^{[2
]}

Kim, Sung Woo ^{[3
]}

Yook, Jong-Gwan ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

[2] Sungkyul Univ, Informat & Commun Engn Dept, Kyonggi Do 430742, South Korea

[3] LG Elect, Adv Res Inst, Future IT R&D Lab, Seoul, South Korea

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2014年 / 24卷 / 10期

关键词：

Sensitivity enhancement; vital sign; wrist pulse;

D O I：

10.1109/LMWC.2014.2340584

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 letter presents a wrist pulse sensor based on reflection coefficient (S-11) from a resonator which is applicable to existing wearable communication devices. The compact resonator is designed on flexible substrate as an RF signal radiator. Since the reflection coefficient from the resonator depends on the distance between the resonator and the wall of the major artery, slight changes in radial artery diameter can be utilized to obtain pulse rate at the wrist. The sensor system is implemented and tested at 2.4 GHz ISM band, and reveals excellent performance in terms of sensitivity as well as convenience as a wearable device compared to conventional piezoelectric or photoplethysmography (PPG) sensor.

引用

页码：719 / 721

页数：3

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