Remote Ballistocardiographic Monitoring of Cardiac Activity

A non-contact technique for human heart activity monitoring is proposed. The technique is based on the measurement of the ballistocardiographic signal. The measuring device uses a high-sensitivity piezoelectric sensor that traces microscopic body movements. Mathematical methods of broadband acoustic signal processing are used to eliminate the noise caused by high sensitivity of the sensor. The attained quality of cardiac signal measurement is sufficiently high to allow observing the cardiac activity cycles.