A smartphone based respiratory biofeedback system

In this paper a breathing bio-feedback system based on the Smartphone and Bluetooth technology is presented. The whole system comprises of three parts: a respiration sensor with RIP technology to acquire the breathing trace, a Bluetooth module to transmit respiratory data wirelessly, a smartphone based application to receive the data and generate an audiovisual feedback signal to the user for breathing pilot. Experiments showed this system was capable of guiding the user to have slow and deep breathing effortlessly and eventually make beneficial effects on cardiovascular system. So smartphone based biofeedback is a promising field of combining the biofeedback technique with the convenience of the mobile phone, people can perform desired biofeedback at any time and any where.