APPARATUS AND METHOD FOR DETECTING LOCATION OF UNDERGROUND FACILITY
First Claim
1. A method for detecting a location of an underground facility, the method comprising the steps of:
- calculating a gauss value at each depth of a magnetic marker;
measuring a magnetic field using each sensor at each depth based on the calculated gauss value;
extracting factors by performing a factor analysis on the measured magnetic fields;
obtaining and storing extracted variable values by performing a regression analysis on the extracted factors; and
determining a location of the magnetic marker based on the stored extracted variable values and the values measured by the sensors in real time.
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Abstract
The present invention provides an apparatus and method for detecting a location of an underground facility, which calculates a gauss value at each depth of a magnetic marker, measures a magnetic field at each depth through each sensor based on the calculated gauss values, extracts factors by performing a factor analysis on the measured magnetic fields, obtains extracted variable values by performing a regression analysis on the extracted factors, stores the extracted variable values in a database, and determines a location of the magnetic marker based on the stored extracted variable values and the values measured by the sensors in real time.
8 Citations
8 Claims
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1. A method for detecting a location of an underground facility, the method comprising the steps of:
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calculating a gauss value at each depth of a magnetic marker; measuring a magnetic field using each sensor at each depth based on the calculated gauss value; extracting factors by performing a factor analysis on the measured magnetic fields; obtaining and storing extracted variable values by performing a regression analysis on the extracted factors; and determining a location of the magnetic marker based on the stored extracted variable values and the values measured by the sensors in real time. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for detecting a location of an underground facility, the apparatus comprising:
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a detector including at least three magnetic field sensors for detecting magnetic fields generated from a magnetic marker; and a master processor for quantifying a gauss value of each sensor at each depth of the magnetic marker as one data by performing a factor analysis and a regression analysis and determining a location of the magnetic marker with respect to the measurement values output from the detector based on the quantified data. - View Dependent Claims (7, 8)
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Specification