US 2016/0109608 A1 · BURIED SERVICE DETECTION

Abstract

Some embodiments of the invention relate to a mobile detection device embodied as a bucket of an earth moving machine for an evaluation of a distance value and/or proximity from the bucket to an occluded AC-current carrying structure according to the magnetic field emanated from the structures AC-current. There is at least one detection coil, comprising at least one winding of an electrically conductive material, which is connected to a first amplification stage, with an amplifier circuit embodied as a current sensing amplifier, which are both are sealed within a common enclosure that is located at the bucket. An output of the amplifier circuit is configured to be linked to an electronic signal evaluation unit for detecting the occluded structure according to an electrical signal induced in the detection coil by the magnetic field.

Claims20

Dependent claims

A Mobile detection device as a bucket of an earth moving machine for an evaluation of a distance value and/or proximity from the bucket to an occluded AC-current carrying structure according to the magnetic field emanated from the structures AC-current, with

at least one detection coil, comprising at least one winding of an electrically conductive material, connected to
a first amplification stage,
wherein the detection coil and the first amplification stage are sealed within a common enclosure which is located at the bucket, and
wherein an output of the amplifier circuit is configured to be linked to an electronic signal evaluation unit for detecting the occluded structure according to an electrical signal induced in the detection coil by the magnetic field, and
wherein the first amplification stage is a amplifier circuit embodied as a current sensing amplifier.

2 more elements

A location method for occluded AC-current carrying underground structures at a construction site during earth moving, with a mobile detection device embodied as a bucket of an earth moving machine,

wherein the bucket comprises at least one detection coil that is connected to a first amplification stage, with an amplifier circuit embodied as a current sensing amplifier, and
wherein the detection coil and the first amplification stage are sealed within a common enclosure that is located at the bucket, with a
detecting of the underground structure according to an electrical signal induced in the detection coil by a magnetic field emanated from the AC-current at the under ground structure,
the receiving and evaluating with the detection coils comprises an amplifying of the detection coils output in current mode by the current mode amplifier which is providing low input impedance to the detection coil, and
evaluating a proximity and/or a distance value from the bucket to the occluded AC-current carrying structure according to an electrical signal of the output of the current mode amplifier by means of an electronic signal evaluation unit.

2 more elements

Dependencies are inferred from the claim text.

Buried service detection

Life of this patent

Buried service detection

Life of this patent

Abstract

Claims20