Textile Embedded Sensors For Wearable Physiological Monitoring Systems
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Textile-embedded Sensors for Wearable Physiological Monitoring Systems
For long-term physiological monitoring inside or outside a hospital setting, a reliable, wearable monitoring system would be a convenient platform if biomedical sensors are securely placed in appropriate positions. An article of clothing is an attractive platform to implement such a wearable system. It is highly desirable that the sensors be designed and integrated into the garment in an unobtrusive way. The purpose of the dissertation is to develop textile-embedded biomedical sensors that can be integrated into textile substrates in a seamless manner for long-term ECG and respiration monitoring while normal daily activities including walking, jogging, sleeping, sitting, and other exercise are transpiring. These sensors should provide both a comfortable textile interface and robustness against noise and motion artifacts. For ECG monitoring, we developed textile-embedded active electrodes that transform high input impedance signals to low impedance versions by employing a voltage follower circuit. The fabric active electrodes include a transducer layer on the top of the nonwoven substrates and a circuit layer on the bottom. The transducer area, signal path and power lines are filled with AgD gCl ink by screen printing or hand painting. The electrical components and external wires were attached using adhesive conductive inks and protected by another textile covering layer. For respiration monitoring, we devised a fabric sensor structure based on double nonwoven substrates. Stretchable and non-stretchable segments of nonwoven fabrics are laterally attached by, for example, ultra sonic bonding. The stretchable fabrics are employed in belts around the chest and abdomen and respond to breathing effort by changing the sensor's length in the direction of the strain applied. Rectangular plates for a capacitive sensor or an open-rectangular spiral for an inductive sensor is deposited on the non-stretchable fabric portions of the sensors by printing or painting silver in.
Textile-embedded Sensors for Wearable Physiological Monitoring Systems
Keywords: Inductive Sensor, Textile Sensor, Wearable Monitoring System, Biomedical Sensor, Active Electrodes.
Wearable Technologies: Concepts, Methodologies, Tools, and Applications
Author: Management Association, Information Resources
language: en
Publisher: IGI Global
Release Date: 2018-04-06
Advances in technology continue to alter the ways in which we conduct our lives, from the private sphere to how we interact with others in public. As these innovations become more integrated into modern society, their applications become increasingly relevant in various facets of life. Wearable Technologies: Concepts, Methodologies, Tools, and Applications is a comprehensive reference source for the latest scholarly material on the development and implementation of wearables within various environments, emphasizing the valuable resources offered by these advances. Highlighting a range of pertinent topics, such as assistive technologies, data storage, and health and fitness applications, this multi-volume book is ideally designed for researchers, academics, professionals, students, and practitioners interested in the emerging applications of wearable technologies.