title: A low-power and miniaturized electrocardiograph data collection system with smart textile electrodes for monitoring of cardiac function.
abstract: With the increasing aging population as well as health concerns, chronic heart disease has become the focus of public attention. A comfortable, low-powered, and wearable electrocardiogram (ECG) system for continuously monitoring the elderly's ECG signals over several hours is important for preventing cardiovascular diseases. Traditional ECG monitoring apparatus is often inconvenient to carry, has many electrodes to attach to the chest, and has a high-power consumption. There is also a challenge to design an electrocardiograph that satisfies requirements such as comfort, confinement, and compactness. Based on these considerations, this study presents a biosensor acquisition system for wearable, ubiquitous healthcare applications using three textile electrodes and a recording circuit specialized for ECG monitoring. In addition, several methods were adopted to reduce the power consumption of the device. The proposed system is composed of three parts: (1) an ECG analog front end (AFE), (2) digital signal processing and micro-control circuits, and (3) system software. Digital filter methods were used to eliminate the baseline wander, skin contact noise, and other interfering signals. A comparative study was conducted using this system to observe its performance with two commercial Holter monitors. The experimental results demonstrated that the total power consumption of this proposed system in a full round of ECG acquisition was only 29.74 mW. In addition, this low-power system performed well and stably measured the heart rate with an accuracy of 98.55 %. It can also contain a real-time dynamic display with organic light-emitting diodes (OLED) and wirelessly transmit information via a Bluetooth 4.0 module.
authors.affiliation: Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China.|Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen, 518060, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Dai
authors.affiliation: Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, China.
authors.forename: Xueliang
authors.initials: X
authors.lastname: Xiao
authors.affiliation: Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China.|Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen, 518060, China.|National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, 518060, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China.|Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen, 518060, China.
authors.forename: Haoming
authors.initials: H
authors.lastname: Lin
authors.affiliation: Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Shenzhen, 518055, China. wq.wu@siat.ac.cn.
authors.forename: Wanqing
authors.initials: W
authors.lastname: Wu
authors.affiliation: Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China. chensiping@szu.edu.cn.|Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen, 518060, China. chensiping@szu.edu.cn.|National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen, 518060, China. chensiping@szu.edu.cn.
authors.forename: Siping
authors.initials: S
authors.lastname: Chen
mesh_terms: D000465:Algorithms; D003625:Data Collection; D017097:Electric Impedance; D011211:Electric Power Supplies; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D004867:Equipment Design; D006334:Heart Function Tests / Q000295:instrumentation*; D008904:Miniaturization / Q000379:methods*; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted; D013784:Textiles
keywords: Biomedical signal processing; Flexible textile electrode; Weak signal detection; Wearable apparatus