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Journal of Sensors
Volume 2010, Article ID 434863, 6 pages
http://dx.doi.org/10.1155/2010/434863
Research Article

A New System for Continuous Monitoring of Breathing and Kinetic Activity

Electrical and Electronic Department, Polytechnic of Bari, Via E. Orabona, Bari 70125, Italy

Received 24 February 2010; Revised 11 June 2010; Accepted 6 July 2010

Academic Editor: Cristina E. Davis

Copyright © 2010 Roberto Marani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present a new system for acquiring simultaneously breathing rate and kinetic activity over a period of twenty-four hours. The system is based on a couple of sensors, which are very light, absolutely noninvasive, and compatible with everyday life. The proposed breathing sensor is cheap and uses a conductive rubber as active material. An analog signal representing the breathing rate is obtained from the sensor's signal, breath by breath, without any averaging or filtering. The kinetic activity sensor is based on a tiny accelerometer whose signal is averaged and filtered, so that both sensors have voltage compatible with a slow data logging.