Patent · US Active

Spatially resolved metal detector

US10788548B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Christian Findeklee · Norderstedt, DE
Christoph Leussler · Hamburg, DE
Peter Vernickel · Hamburg, DE

Key dates

Filing date	Oct 2, 2015
Grant date	Sep 29, 2020
Priority date	—
Expiry date	Sep 19, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/72
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention provides for a metal detector (100, 300) with at least a first coil (102) for generating a first magnetic field (108) along a first direction (119). The first coil is a split coil with a first (104) and a second (106) portion (104). A coil power supply (110) separately supplying time varying electrical power to the coil portions. At least one electrical sensor (116, 118) measures electrical data (136) descriptive of the electrical power supplied to at least the first coil portion and the second coil portion. The coils are controlled such as to move a field-free region in a predetermined pattern within a measurement zone. If metal is detected, the pattern is modified for refining localisation of the metallic object.

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