Bandage-size non-ECG heart rate monitor using ZigBee wireless link

Heart rate is an indication for the health of a human being. Traditionally, ECG signal is used to measure and monitor heart rate. This design uses a simple technique to pick up the sound of the heart beat and send the beat signal wirelessly to a computer. The system is a low-cost with a very small size, light weight and easy to use by the patient. A microphone is used to pick up the sound of the heart beat. The signal is processed, sampled and sent wirelessly using ZigBee protocol. Experimental results show the system functioning properly. Heart beat signals are sensed, sent, displayed, monitored, stored, reviewed, and analyzed with ease. Flexible PCB can be used to further reducing size and weight of the sensing unit.