A Study of Vehicle Detection Based on Magnetic Declination
Geomagnetic vehicle detector (GVD) is a kind of traffic monitoring equipment based on the effect that passing vehicles disturb the geomagnetic field. GVD is used as an alternative to inductive loops, with the advantages of small size, easy installation and slight damage on the road surface. GVD is usually based on the vertical component of geomagnetic field and state machine algorithm, and is able to count traffic flow, sort vehicle type and measure vehicle speed. However, the precision of these algorithms is usually affected by baseline drift and vehicle speed. This paper presents a new GVD method that is based on the magnetic declination measurement technology. Magnetic declination is the angle between the local magnetic field and true north. The authors use a proof test in the lab and data collected from field test, to describe vehicle detecting technology using the state machine algorithm. The authors conclude that GVD based on magnetic declination measurement has potential for traffic monitoring.
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Corporate Authors:
1100 17th Street, NW, 12th Floor
Washington, DC United States 20036 -
Authors:
- Ni, Pan
- Yu, Wen
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Conference:
- 15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual Meeting
- Location: New York NY, United States
- Date: 2008-11-16 to 2008-11-20
- Publication Date: 2008
Language
- English
Media Info
- Media Type: CD-ROM
- Features: Figures; Photos; References;
- Pagination: 8p
- Monograph Title: ITS Connections: Saving Time. Saving Lives
Subject/Index Terms
- TRT Terms: Anisotropic materials; Automatic vehicle monitoring; Intelligent transportation systems; Loop detectors; Magnetic materials; Speed measurement; Technological innovations; Traffic flow; Vehicle detectors
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 01137175
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 29 2009 8:20AM