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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ono, Y. Mohamed, D. Kobayashi, M. Cheng-Kuei Jen |
| Copyright Year | 2008 |
| Description | Author affiliation: Ind. Mater. Inst., Nat. Res. Council Canada, Boucherville, QC (Kobayashi, M.; Cheng-Kuei Jen) || Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, ON (Ono, Y.; Mohamed, D.) |
| Abstract | Airflow monitoring is an effective way to diagnose sleep disorders that are caused by complete or partial cessation of breathing during sleep. For monitoring airflow, a piezoelectric membrane sensor, consisting of a stainless steel foil, a piezoelectric ceramic film and a top electrode, has been developed using a sol-gel spray technique. This sensor has worked as a unimorph-type bending sensor, which could be attached beneath the nose and/or above the mouth using a clip or tape for monitoring breathing. A mathematical model for the sensor output with respect to the airflow speed has been developed using piezoelectric theory and Bernoullipsilas law. In addition, a respiration simulator system has been constructed in order to study the sensor response under different airflow conditions such as cycle, volume and temperature. Experimental results with the simulator showed that the sensor output voltage due to piezoelectric effect was proportional to the square of the airflow speed, which agrees with the mathematical model developed, under the experimental conditions employed. A calibration curve was obtained experimentally, which enables measurement of airflow variations quantitatively using the output voltage measured. |
| Starting Page | 795 |
| Ending Page | 798 |
| File Size | 1111077 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424424283 |
| DOI | 10.1109/ULTSYM.2008.0191 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-11-02 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Biomembranes Monitoring Mathematical model Temperature sensors Voltage Steel Ceramics Piezoelectric films Electrodes Spraying pyroelectricity piezoelectric membrane sensor unimorph breathing monitoring sleep disorder |
| Content Type | Text |
| Resource Type | Article |
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