A wearable BSN-based ECG-recording system using micromachined electrode for continuous arrhythmia monitoring

A wearable BSN-based ECG-recording system is proposed for long-term and continuous arrhythmia monitoring. A novel micromachined Pt electrode is specifically designed, fabricated and integrated into a wearable chest band. A miniaturized PCB for ECG analog front-end is fabricated, and can be plugged on the BSN node to wirelessly transmit the signal to a hand-held device. Wavelet denoising is implemented on the hand-held device to further reduce the noise induced by electrode contact. Once a beat is detected, it is characterized by a number of features such as width, amplitude and rhythm pattern, and different types of arrhythmias can then be real-time classified. Once sentinel events such as arrhythmia is detected, the abnormal ECG signal can be sent wirelessly by hand-held device through GPRS to doctors or caregivers for prompt analysis and further treatment.