Capacitively coupled ECG measurements - a CMRR circuit improvement

A typical galvanic-connected electrocardiogram (ECG) measurement system utilizes two signal’s electrodes and a third one in driven-right-leg (DRL) circuit for improving a common-mode rejection ratio(CMRR) of the acquisition system. In capacitive-coupled ECG similar techniques are used, however it is expected, that the utilized DRL subsystem is formed using a capacitive coupling approach, too. An improvement of the acquisition system performance by improving DRL circuit is presented in the paper.

[1]  Mark F. Bocko,et al.  A low noise, non-contact capacitive cardiac sensor , 2012, 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[2]  Yong Gyu Lim,et al.  ECG measurement on a chair without conductive contact , 2006, IEEE Transactions on Biomedical Engineering.

[3]  Adam Bujnowski,et al.  Detection of person presence and its activity in the bathtub , 2013 .

[4]  Jacek Ruminski,et al.  Adding Medical Functionalities to a Remote Controller , 2012, 2012 5th International Conference on Human System Interactions.

[5]  Boby George,et al.  Simulation study of a contactless, capacitive ECG system , 2014, TENCON 2014 - 2014 IEEE Region 10 Conference.

[6]  Upul Gunawardana,et al.  A Wearable Contactless Sensor Suitable for Continuous Simultaneous Monitoring of Respiration and Cardiac Activity , 2015, J. Sensors.

[7]  S. Leonhardt,et al.  Non-Contact Monitoring of Heart and Lung Activity by Magnetic Induction Measurement , 2008 .

[8]  Yong Gyu Lim,et al.  ECG Recording on a Bed During Sleep Without Direct Skin-Contact , 2007, IEEE Transactions on Biomedical Engineering.

[9]  Hlaing Minn,et al.  Apnea MedAssist: Real-time Sleep Apnea Monitor Using Single-Lead ECG , 2011, IEEE Transactions on Information Technology in Biomedicine.

[10]  Adam Bujnowski,et al.  An intelligent bathroom , 2011, 2011 Federated Conference on Computer Science and Information Systems (FedCSIS).

[11]  Steffen Leonhardt,et al.  A novel ultra-wideband 80 GHz FMCW radar system for contactless monitoring of vital signs , 2015, 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

[12]  M. Sangeetha,et al.  Comparison of image based and laser based technique for non contact heart beat monitoring system , 2016, 2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET).