Low-Power Multi-Lead Wearable ECG System With Sensor Data Compression

This study proposes a low-power wearable electrocardiogram (ECG) acquisition system for monitoring human health in daily life. A flexible sensing electrode was designed to replace traditional silver-silver chloride (Ag/AgCl) electrodes for measuring ECG signals from leads I, II, and V1. The traditio...

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Bibliographic Details
Published in:IEEE sensors journal Vol. 22; no. 18; pp. 18045 - 18055
Main Authors: Wang, Liang-Hung, Zhang, Zong-Heng, Tsai, Wen-Ping, Huang, Pao-Cheng, Abu, Patricia Angela R.
Format: Journal Article
Language:English
Published: New York IEEE 15.09.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Biomedical monitoring
Bluetooth
Bluetooth low energy (BLE)
Compression ratio
Data compression
electrocardiogram (ECG)-sensing electrodes
Electrocardiography
Electrodes
lossless compression algorithm
Monitoring
Portable equipment
Power consumption
Power management
Real-time systems
Sampling
Sensors
Silver chloride
Wearable technology
ISSN:1530-437X, 1558-1748
Online Access:Get full text
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Summary:This study proposes a low-power wearable electrocardiogram (ECG) acquisition system for monitoring human health in daily life. A flexible sensing electrode was designed to replace traditional silver-silver chloride (Ag/AgCl) electrodes for measuring ECG signals from leads I, II, and V1. The traditional multi-lead-wired ECG detector limits the movements and activities of the patient and requires medical staff to assist in collecting ECG signals. The portable ECG acquisition device proposed in this article is not only comfortable to wear but also convenient for patients to use anytime, anywhere. To increase the sampling rate of the device to obtain more ECG signal information, this study proposes an innovative Huffman lossless ECG data compression algorithm based on variable-word length coding (VLC). This algorithm can efficiently realize data compression and reduce power consumption. It makes the whole system operate continuously for a long period of time and acquire abundant ECG information, which is helpful for clinical diagnosis. Experimental results show that when the sampling rate is 400 Hz, the working current is only 3.64 mA, and the compression ratio (CR) of the device can reach 2.38.
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ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2022.3195501