DEVICE FOR MEASURING THE SPEED OF DISPLACEMENT OF AN OBJECT DEFORMING THE LINES OF THE TERRESTRIAL MAGNETIC FIELD
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Accused Products
Abstract
An apparatus for measuring speed of movement of an object deforming lines of Earth'"'"'s magnetic field includes a first and second magnetometer disposed on either side of a traffic roadway for the object and substantially perpendicular to the object. The magnetometers are configured for measuring deformation of Earth'"'"'s magnetic field by the object travelling over the roadway. The apparatus also includes a processing unit configured for extracting, from each of the magnetometers, a measurement value corresponding to a quotient defined by a distance of the object with respect to the magnetometer divided by a speed of movement of the object, and for calculating a speed of the object from the measurement values and a geometrical disposition of the magnetometers with respect to one another and with respect to the traffic roadway.
20 Citations
26 Claims
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1-13. -13. (canceled)
- 14. An apparatus for measuring speed of movement of an object deforming lines of Earth'"'"'s magnetic field, said apparatus comprising a first and second magnetometer disposed on either side of a traffic roadway for said object and substantially perpendicular to said object, said first and second magnetometers being configured for measuring deformation of Earth'"'"'s magnetic field by said object travelling over said roadway, and a processing unit configured for extracting, from each of said magnetometers, a measurement value corresponding to a quotient defined by a distance of said object with respect to said magnetometer divided by a speed of movement of said object, and for calculating a speed of said object from said measurement values and a geometrical disposition of said magnetometers with respect to one another and with respect to said traffic roadway.
Specification