Simple inductively coupled resonance sensor for ECG and heart rate monitoring

An inductively coupled passive resonance sensor for the measurement of bioelectric signals is presented. The sensor element is extremely simple containing only a few passive components and a pair of electrodes. It is affordable to manufacture and since it is a totally passive device, it is suitable for wearable and body sensor applications where a near field reading technique can be used. The sensor can be attached to the skin like a sticking plaster and could be even implanted if properly miniaturized. Design and use of the measurement system for ECG and heart rate measurements in wearable applications is presented and evaluated.