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Fibers 2015, 3(4), 463-477; doi:10.3390/fib3040463

A Smart Shirt Made with Conductive Ink and Conductive Foam for the Measurement of Electrocardiogram Signals with Unipolar Precordial Leads

1
Advanced Scientific Research Leaders Development Unit, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
2
Department of Mechanical Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
3
Department of Anesthesiology, Gunma University, 3-39-22, Showa-machi, Maebashi, Gunma 371-8511, Japan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Jinlian Hu
Received: 21 September 2015 / Accepted: 28 October 2015 / Published: 3 November 2015
(This article belongs to the Special Issue Smart Textiles)
View Full-Text   |   Download PDF [1194 KB, uploaded 3 November 2015]   |  

Abstract

The Holter monitor is used to measure an electrocardiogram (ECG) signal while a subject moves. However, the Holter monitor is uncomfortable for the subject. Another method of measuring the ECG signal uses a smart shirt. We developed a smart shirt that has six electrodes on the chest and can measure a detailed ECG, obtained with unipolar precordial leads. The electrodes and wires of the shirt are made of conductive ink that is flexible and stretchable. The smart shirt is stretchable and fits the body well. However, because of the gap between the smart shirt and the body, electrodes V1 and V2 do not touch the body consistently. We developed a conductive foam block that fills this gap. We investigated the characteristics of the conductive foam block, and measured ECG signals using the smart shirt. The electrical resistance of the conductive foam block was reduced by pressure. This characteristic could be utilized to measure the ECG signal because the block was pressed by the body and smart shirt. We could measure the ECG signal using the smart shirt and blocks while the subject walked and could detect peaks of the ECG signal while the subject jogged slowly. View Full-Text
Keywords: smart shirt; conductive ink; conductive foam; electrocardiogram measurement smart shirt; conductive ink; conductive foam; electrocardiogram measurement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Tada, Y.; Amano, Y.; Sato, T.; Saito, S.; Inoue, M. A Smart Shirt Made with Conductive Ink and Conductive Foam for the Measurement of Electrocardiogram Signals with Unipolar Precordial Leads. Fibers 2015, 3, 463-477.

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