Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

access icon openaccess Common-mode noise cancellation circuit for wearable ECG

Wearable electrocardiogram (ECG) is attracting much attention for monitoring heart diseases in healthcare and medical applications. However, an imbalance usually exists between the contact resistances of sensing electrodes, so that a common mode noise caused by external electromagnetic field can be converted into the ECG detection circuit as a differential mode interference voltage. In this study, after explaining the mechanism of how the common mode noise is converted to a differential mode interference voltage, the authors propose a circuit with cadmium sulphide photo-resistors for cancelling the imbalance between the contact resistances and confirm its validity by simulation experiment. As a result, the authors found that the interference voltage generated at the wearable ECG can be effectively reduced to a sufficient small level.

References

    1. 1)
      • 6. Online Available at http://akizukidenshi.com/download/ds/se-nba/GL55%20Series%20Photoresistor.pdf.
    2. 2)
    3. 3)
    4. 4)
      • 5. Lim, Y.G., Chung, G.S., Park, K.S.: ‘Capacitive driven-right-leg grounding in indirect-contact ECG measurement’. Proc. 2010 Annual Int. Conf. IEEE Engineering in Medicine and Biology Society (EMBC), 2010, pp. 12501253.
    5. 5)
      • 1. IEEE Std 802.15.6-2012: ‘IEEE Standard for local and metropolitan area networks – Part 15.6: Wireless Body Area Networks’, 2012.
    6. 6)
      • 2. Wang, J., Wang, Q.: ‘Body area communications’ (Wiley-IEEE, 2012).
    7. 7)
http://iet.metastore.ingenta.com/content/journals/10.1049/htl.2016.0083
Loading

Related content

content/journals/10.1049/htl.2016.0083
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address