Patent · US Active

Object locater and method for locating a metallic and/or magnetizable object

US10054709B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Markus Hahl · Ditzingen, DE
Juergen Winterhalter · Stuttgart, DE
Andrej Albrecht · Stuttgart, DE
Tobias Zibold · Stuttgart, DE
Oliver Grossmann · Kelkheim, DE

Key dates

Filing date	Feb 14, 2014
Grant date	Aug 21, 2018
Priority date	—
Expiry date	Aug 9, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01V3/104
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor for locating metallic or magnetizable objects comprises two emission coils and a receiving coil which are inductively interconnected. A method for determining the influence of temperature on the sensor includes supplying a first pair of predetermined alternating currents to the emitter coils, and simultaneously sampling current flows which pass through the emitter coils and a first current of the receiver coil. Subsequently, the method includes supplying a second pair of predetermined alternating currents to the emitter coils, and simultaneously sampling current flows which pass through the emitter coils and a second current of the receiver coil. The method further includes determining coupling factors between the emitter coils and the receiver coils based on the determined current flows and voltages, and determining the object based on the coupling factors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.