Low-Power Multi-Lead Wearable ECG System With Sensor Data Compression
Low-Power Multi-Lead Wearable ECG System With Sensor Data Compression
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DOI：
10.1109/jsen.2022.3195501
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发表时间：
2022-09
影响因子：
4.3
通讯作者：
Liang-Hung Wang;Zong-Heng Zhang;Wen-Ping Tsai;Pao-Cheng Huang;P. Abu
中科院分区：
文献类型：
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作者：
Liang-Hung Wang;Zong-Heng Zhang;Wen-Ping Tsai;Pao-Cheng Huang;P. Abu
本研究提出一种低功耗可穿戴式心电图采集系统，用于日常生活中人体健康监测。设计了一种柔性传感电极，以取代传统的银-氯化银（Ag/AgCl）电极，用于测量导联I、II和V1的ECG信号。传统的多导线心电检测仪限制了患者的运动和活动，需要医护人员协助采集心电信号。本文提出的便携式心电采集装置不仅佩戴舒适，而且方便患者随时随地使用。为了提高设备的采样率，获取更多的心电信号信息，本研究提出了一种基于变字长编码（VLC）的创新型Huffman无损心电数据压缩算法。该算法可以有效地实现数据压缩，降低功耗。使整个系统长时间连续运行，获取丰富的心电信息，有助于临床诊断。实验结果表明，当采样率为400 Hz时，工作电流仅为3.64 mA，器件的压缩比（CR）可达2.38。
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.