This paper presents a new technique to improve the quality of the ECG signals, increasing the Common Mode Rejection Ratio (CMRR). We developed a portable wireless Bluetooth ECG system able to acquire 12 leads, communicating with Smartphones and PCs. Many experiments have been made for measuring CMRR decay due to the difference on skin-electrodes impedances, the asymmetries of the amplifiers input stages and external components. Using some digital potentiometers, the system is able to compensate for these, increasing the CMRR of about 18 dB.
|Titolo della pubblicazione ospite||Lecture Notes in Electrical Engineering|
|Numero di pagine||7|
|Stato di pubblicazione||Published - 2017|
|Nome||LECTURE NOTES IN ELECTRICAL ENGINEERING|