Seat Occupancy Detection Based on Impedance Measurement
P. Blessy1, R. Jegan2, X. Anitha Mary3
1P.Blessy, PG Scholar, Department of Electronics and Instrumentation Engineering, Karunya University, Coimbatore (Tamil Nadu), India.
2R.Jegan, Assistant Professor, Department of Electronics and Instrumentation Engineering, Karunya university, Coimbatore (Tamil Nadu), India.
3X.Anitha Mary, Assistant Professor, Department of Electronics and Instrumentation Engineering, Karunya University, Coimbatore (Tamil Nadu), India.
Manuscript received on 12 March 2013 | Revised Manuscript received on 21 March 2013 | Manuscript Published on 30 March 2013 | PP: 39-41 | Volume-2 Issue-4, March 2013 | Retrieval Number: D0493032413/13©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Improved automotive safety depends on the sensing of the occupancy of the seat. Capacitive sensors are one of the most attractive sensor technologies that are used in seat occupancy detection. With the help of capacitive sensing methods the presence of an object or a person can be detected. This information can be used in vehicles for triggering safety devices, like airbag, only in the case when the seat is occupied by a human. A method for identifying human proximity in a seat by sensing the electric field and by measuring the impedance is introduced in this paper.
Keywords: Capacitive Sensing Principle, Electrodes, Electric Field Sensing, Impedance Measurement, Integrated Circuit.
Scope of the Article: Measurement & Performance Analysis