An Electronic System for the Contactless Reading of ECG Signals

Sensors

Mario Benassai¹  Arnaldo D’Amico²  Francesca Romana Parente³  Giuseppe Ferri³  Marco Santonico⁴  Alessandro Zompanti⁴  Giorgio Pennazza⁴ 

[1] ALTEC S.p.A., Aerospace Logistics and Technology Engineering Company, 10146 Torino, Italy;Department of Electronic Engineering, University of Rome Tor Vergata, 00133 Rome, Italy;Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy;Unit of Electronics for Sensor Systems, Department of Engineering Campus Bio-Medico University of Rome, 00128 Rome, Italy;

关键词: capacitive sensors;    ECG;    contactless;    biomedical electronics;    wearable;   

DOI  :  10.3390/s17112474

来源: DOAJ

【 摘 要 】

The aim of this work is the development of a contactless capacitive sensory system for the detection of (Electrocardiographic) ECG-like signals. The acquisition approach is based on a capacitive coupling with the patient body performed by electrodes integrated in a front-end circuit. The proposed system is able to detect changes in the electric charge related to the heart activity. Due to the target signal weakness and to the presence of other undesired signals, suitable amplification stages and analogue filters are required. Simulated results allowed us to evaluate the effectiveness of the approach, whereas experimental measurements, recorded without contact to the skin, have validated the practical effectiveness of the proposed architecture. The system operates with a supply voltage of ±9 V with an overall power consumption of about 10 mW. The analogue output of the electronic interface is connected to an ATmega328 microcontroller implementing the A/D conversion and the data acquisition. The collected data can be displayed on any multimedia support for real-time tracking applications.

【 授权许可】

Unknown