Back to Search
Start Over
A Non-Contact Compact Portable ECG Monitoring System
- Source :
- Electronics, Volume 10, Issue 18, Electronics, Vol 10, Iss 2279, p 2279 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Cardiovascular diseases (CVDs) have been listed among the most deadly diseases worldwide. Many CVDs are likely to manifest their symptoms some time prior to the onset of any adverse or catastrophic events, and early detection of cardiac abnormalities is incredibly important. However, traditional electrocardiography (ECG) monitoring systems face challenges with respect to their scalability and affordability as they require direct body contact and cumbersome equipment. As a step forward from the large-scale direct-contact ECG monitoring devices, which are inconvenient for the user in terms of wearability and portability, in this research, we present a small-sized, non-contact, real-time recording system for mobile long-term monitoring of ECG signals. The device mainly comprises three non-contact electrodes to sense the bio-potential signal, an AD8233 AFE IC to extract the ECG signal, and a CC2650 MCU to read, filter, and transmit them. The device is powered by a 2000 mAh lithium-ion battery with isolation between digital and analog powers on the board using two low-dropout regulators (LDOs). The board’s dimension is 8.56 cm × 5.4 cm, the size of a credit card, making it optimal to be worn in a shirt chest pocket. In spite of its small form factor, the device still manages to achieve a continuous measurement battery life of over 16 h, total harmonic distortion below −30 dB across the interested frequency range, an input-referred noise as low as 1.46 µV for contacted cases and 5.15 µV for non-contact cases through cotton, and clear ECG recording for both contact and non-contact sensing, all at a cost around USD 50.
- Subjects :
- Total harmonic distortion
TK7800-8360
Computer Networks and Communications
business.industry
Noise (signal processing)
Computer science
electrocardiography
Electrical engineering
Battery (vacuum tube)
Filter (signal processing)
printed circuits
Signal
Small form factor
cardiovascular diseases
Credit card
Microcontroller
wearable electronics
Hardware and Architecture
Control and Systems Engineering
Signal Processing
non-contact electrodes
Electronics
Electrical and Electronic Engineering
business
Subjects
Details
- Language :
- English
- ISSN :
- 20799292
- Database :
- OpenAIRE
- Journal :
- Electronics
- Accession number :
- edsair.doi.dedup.....d5115b83ae18836bcef764d88aa064ad
- Full Text :
- https://doi.org/10.3390/electronics10182279