Magnetic signature detector for detection of magnetic buried targets
AssigneeGas Research Institute
InventorWilliam L. Goodman
Life of this patent
Estimating the term…
Abstract
An apparatus for measuring and detecting a magnetic signature of a magnetically detectable object from a distance includes a portable sensor group for detecting the magnetic signature. The portable sensor group includes three gradient sensors, each of the three gradient sensors adapted to independently measure both a magnitude and a direction of the magnetic signature, a first of said gradient sensors measuring an axial gradient in the vertical direction, a second of said gradient sensors measuring a first horizontal gradient in the vertical direction, and a third of said gradient sensors measuring a second horizontal gradient in the vertical direction.
Claims27
An apparatus for measuring and detecting a magnetic signature of a magnetically detectable object from a distance comprising:
- one portable sensor group for detecting the magnetic signature, the portable sensor group consisting of three gradient sensors, each of the three gradient sensors adapted to independently measure both a magnitude and a direction of the magnetic signature, a first of said gradient sensors measuring an axial gradient in the vertical direction, a second of said gradient sensors measuring a first horizontal gradient in the vertical direction, and a third of said gradient sensors measuring a second horizontal gradient in the vertical direction;
- and
- a signal output device connected to each of the three gradient sensors.
An apparatus for measuring and detecting a magnetic signature of a magnetically detectable object from a distance comprising:
- a portable sensor wand for detecting the magnetic signature, said sensor wand comprising one sensor group consisting of three gradient sensors, each of the three gradient sensors adapted to independently measure both a magnitude and a direction of the magnetic signature;
- each of the three gradient sensors comprising a first fluxgate sensor located at a first position along the sensor wand and a second fluxgate sensor located at a second position along the sensor wand;
- a first of said gradient sensors measuring an axial gradient in the vertical direction, a second of said gradient sensors measuring a horizontal gradient in the vertical direction, and a third of said gradient sensors measuring a second horizontal gradient in the vertical direction;
- and
- a signal output device electronically connected to each of the three gradient sensors.
A method for locating buried magnetized plastic pipe within a search area comprising the step of measuring a magnitude and direction of a magnetic signature in an axial gradient in the vertical direction, in a first horizontal gradient in the vertical direction, and in a second horizontal gradient in the vertical direction using an apparatus having one sensor group consisting of three gradient sensors.
An apparatus for measuring and detecting a magnetic signature of a magnetically detectable object from a distance comprising:
- a portable sensor wand for detecting the magnetic signature, said portable sensor wand comprising three gradient sensors, each of the three gradient sensors adapted to independently measure both a magnitude and a direction of the magnetic signature, an X axis sensor of said gradient sensors positioned along an axis of the portable sensor wand, a Y axis sensor of said gradient sensors positioned sideways relative to the axis of the portable sensor wand, and a Z axis sensor of said gradient sensors positioned forward relative to the axis of the portable sensor wand;
- and a signal output device connected to each of the three gradient sensors.
Dependencies are inferred from the claim text.