Detecting vital signs with wearable wireless sensors

Tuba Yilmaz, Robert Foster, Yang Hao, Tuba Yilmaz, Robert Foster, Yang Hao

Abstract

The emergence of wireless technologies and advancements in on-body sensor design can enable change in the conventional health-care system, replacing it with wearable health-care systems, centred on the individual. Wearable monitoring systems can provide continuous physiological data, as well as better information regarding the general health of individuals. Thus, such vital-sign monitoring systems will reduce health-care costs by disease prevention and enhance the quality of life with disease management. In this paper, recent progress in non-invasive monitoring technologies for chronic disease management is reviewed. In particular, devices and techniques for monitoring blood pressure, blood glucose levels, cardiac activity and respiratory activity are discussed; in addition, on-body propagation issues for multiple sensors are presented.

Keywords: BAN networks; RF sensing; on-body sensors; wearable sensors; wireless telemetry.

Figures

Figure 1.
Figure 1.
Blood pressure sensor by MIT [15].
Figure 2.
Figure 2.
Arm module proposed in [23] (1) deep, (2) mid and (3) shallow electrodes. (4) Temperature sensor. (5) Sweat sensor. (6) Siliconwafer based optical reflection sensor. (7) Humidity sensor. (8) 3-axes acceleration sensor.
Figure 3.
Figure 3.
(a) Initial design of microwave sensor (b) Modified microwave sensor with silicon positioning aid [27].
Figure 4.
Figure 4.
Capacitive electrodes proposed in [38].
Figure 5.
Figure 5.
AMON wrist module [46].
Figure 6.
Figure 6.
Antenna types used in [66].
Figure 7.
Figure 7.
Inter-body propagation case in [71].

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