Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (07): 149-154.doi: 10.13475/j.fzxb.20210501606

• Apparel Engineering • Previous Articles     Next Articles

System of seven-lead electrocardiogram monitoring based on graphene fabric electrodes

LI Ruikai1,2, LI Ruichang3, ZHU Lin2, LIU Xiangyang4()   

  1. 1. School of Quality and Technical Supervision, Hebei University, Baoding, Hebei 071000, China
    2. Affiliated Hospital of Hebei University, Baoding, Hebei 071000, China
    3. School of Economics and Management, Hebei University of Technology, Tianjin 300401, China
    4. College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian 361005, China
  • Received:2021-05-08 Revised:2022-03-21 Online:2022-07-15 Published:2022-07-29
  • Contact: LIU Xiangyang E-mail:liuxy@xmu.edu.cn

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Abstract:

Aiming at the problems that Ag/AgCl gel electrode is not suitable for long-term monitoring and the single lead for wearable electrocardiogram (ECG) device is insufficient for precise examination, a seven-lead wearable ECG monitoring system based on graphene fabric electrode was designed. The system was made of four parts, i.e. the cotton/T400 blended high-elastic ECG suit, a graphene fabric electrode, a seven-lead ECG acquisition terminal, and an APP for data display. The continuous work hours, continuous wearing signal quality and multiple usage scenarios of the system were measured for analysis. The test results show that the SNR (signal/noise ratio) of ECG signal is about 29.8 dB after wearing the graphene fabric electrode for 7 days continuously. The device with a 250 mA·h lithium battery can be used for a maximum of 5 days. It has high reliability, accuracy and wearability in multiple test scenarios of resting, walking, jogging and resting spontaneous sweating. To some extent, it has great potential for continuous remote monitoring.

Key words: graphene fabric electrodes, smart textiles, seven-lead, wearable electrocardiogram monitoring terminal, low energy, cotton/T400 blended high-elastic electrocardiogram suit

CLC Number: 

  • R318.6

Fig.1

Design drawing of whole system of wearable ECG garment"

Fig.2

Schematic diagram (a) and photographs (b) of graphene textiles electrodes"

Fig.3

Frequency-impedance relationship of graphene textiles electrodes and Ag/AgCl electrodes"

Tab.1

Amplitude and signal-to-noise ratios of detected ECG signals by graphene textiles electrode within seven days"

时间/d 电压幅值/mV 信噪比/dB
1 18.6 23.9
2 18.2 28.3
3 18.3 34.2
4 21.2 29.1
5 26.9 32.3
6 25.8 27.9
7 30.2 29.8

Fig.4

APP process flow chart"

Fig.5

APP real-time ECG in different scenes"

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