CPC G01V 3/165 (2013.01) [G01B 7/003 (2013.01); G01B 7/26 (2013.01); G01R 33/10 (2013.01); G01V 3/08 (2013.01); G01V 3/38 (2013.01); G01R 33/096 (2013.01)] | 20 Claims |
1. A magnetic utility locator, comprising:
a first three-axis magnetic sensor disposed on the locator for sensing magnetic fields in three dimensions at a single point in space;
a second three-axis magnetic sensor for sensing magnetic fields in three dimensions at a single point in space positioned above the first three-axis magnetic sensor when the locator is positioned in a vertical orientation;
electronics coupled to an output of the first three-axis magnetic sensor and the output of the second three-axis magnetic sensor for subtracting corresponding output signals from one of the three-axis magnetic sensors from output signals of the other of the three-axis magnetic sensor to determine information about a hidden or buried utility; and
a non-transitory memory for storing the determined information about the hidden or buried utility.
|