Device for detecting vehicles

Details Device for detecting vehicles Device for detecting vehicles

2007-10-30

2007-10-30

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Vehicle detectors

Inductive

C340S551000, C324S200000

Reexamination Certificate

active

11251620

ABSTRACT:
A magnetic field sensor is provided alongside a roadway in order to detect vehicles. A permanent magnet is installed in the roadway at such a distance from the magnetic field sensor that the magnetic field of the permanent magnet is stronger than the geomagnetic field at the magnetic field sensor

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Search Report dated Jan. 12, 2005 in European Application No. 04024715.7 (2 pages).
Caruso, M.J., et al., “Vehicle Detection and Compass Applications using AMR Magnetic Sensors”,Proceedings Sensors Expo Baltimore, Helmers Publishing, Peterborough, NH, 1999, pp. 477-489.

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