Digital locating system and device for underground object detection

• US 7,372,276 B2
• Filed: 02/16/2005
• Issued: 05/13/2008
• Est. Priority Date: 02/16/2005
• Status: Active Grant

• Current Assignee: Goldak, Inc.
• Original Assignee: Goldak, Inc.
• Inventors: Mulcahey, Butch
• Primary Examiner(s): Assouad; Patrick
• Assistant Examiner(s): Schindler; David M.
• Application Number:
  US11/060,053
• Publication Number:
  US 20060181280A1
• Time in Patent Office: 1,182 Days
• Field of Search: 324/326, 324/327, 324/328, 324/329
• US Class Current: 324/326
• CPC Class Codes: G01V 3/06 using ac
• CPC Class Codes: G01V 3/08 operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices with electromagnetic waves G01V3/12
• CPC Class Codes: G01V 3/165 operating with magnetic or electric fields produced or modified by the object or by the detecting device with electromagnetic waves G01V3/17
• CPC Class Codes: G01V 3/36 Recording data G01V3/34 takes precedence

Abstract

An underground digital locating system includes a receiver capable of acquiring a signal produced by an underground object and displaying a digital representation of the orientation of underground object and of its depth. The system includes a carrying case for the digital locating receiver, the carrying case further including a transmitter for energizing underground objects to emit a magnetic field. A method of locating an underground object using the described system is also disclosed, as well as methods of measuring a flux field and translating a flux field signal of an underground object into a visual representation of the underground object on the display screen of the locating receiver.

Claims

1. A digital locating receiver for receiving locating signals from underground objects, comprising

a main body, said main body housing at least one microcontroller and internal circuitry;

a display screen located on the main body for providing visual feedback to a user;

a pistol grip for accommodating a hand of a user, said pistol grip including a trigger;

an antenna arm having a first end and a second end, said antenna arm being swivelably connected to said main body at said first end;

a first antenna set mounted on said second end of the antenna arm and comprising a set of three mutually orthogonal ferrite antennas;

a second antenna set housed within the main body of the receiver, said second antenna set being comprised of a set of three mutually orthogonal ferrite antennas;

wherein said receiver is capable of processing locating signals acquired from an underground object by said first and second antenna sets, and producing an output on said display screen, said output representing a predicted location of the underground object.

2. The digital locating receiver of claim 1, wherein said first antenna set and said second antenna set are 21 inches apart from each other.

3. The digital locating receiver of claim 1, wherein said first antenna set and said second antenna set are separated by a predetermined distance.

4. The digital locating receiver of claim 1, further comprising a speaker for producing audible feedback for a user, said speaker being housed within the main body of said receiver.

5. The digital locating receiver of claim 1, further comprising a battery compartment for storing batteries, said battery compartment housed within the main body of said receiver.

6. The digital locating receiver of claim 1, further comprising a connection panel, said connection panel being located on the main body of said receiver and comprising a plurality of inlets adapted to accommodate accessory cables.

7. The digital locating receiver of claim 1, wherein said output on the display screen includes an arrow representing the predicted direction of said underground object with respect to said receiver.

8. The digital locating receiver of claim 1, wherein said output on the display screen includes a graphical image of said underground object, said image representing the predicted orientation of said underground object in space.

9. The digital locating receiver of claim 1, wherein said output on the display screen includes a predicted depth of said underground object when said receiver is generally positioned over the underground object.