The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2022
Filed:
Jul. 30, 2019
Gerd Reime, Bühl, DE;
Gerd Reime, Bühl, DE;
Other;
Abstract
The invention relates to a measuring arrangement and to a method for the inductive analysis of metal objects, comprising a coil arrangement having an excitation coil () that can be excited by means of an excitation current, and at least one receiver coil (), said two coils being inductively coupled to one another. By means of an evaluation unit, an output signal () of the measuring arrangement is evaluated. Means for generating a ramp-shaped voltage signal of the excitation voltage () as a specification for a ramp-shaped current through the excitation coil are provided. A control device regulates the current at the base point of the excitation coil () such that a ramp-shaped excitation current is produced, which is modulated by the metal object (), and which affects the change in the excitation voltage. Thus, an inductive analysis or detection method is provided, in which temperature influences on the coil system have no effect at all, and which, moreover, allows a spectral analysis of the inductive properties of the metal to be analyzed in a wide frequency range.