Patent · US Active

Coding and identifying plate-type workpieces

US11113489B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

TRUMPF Werkzeugmaschinen GmbH + Co. KG · DE

Inventors

Daniel Bossert · Nußdorf, DE
Klaus Bauer · Neuendettelsau, DE
Andreas Popp · Ludwigshafen, DE
Eberhard Wahl · Weilheim, DE

Key dates

Filing date	Apr 17, 2020
Grant date	Sep 7, 2021
Priority date	—
Expiry date	Apr 17, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/06028
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Methods and devices for coding and identifying plate-type workpieces are provided. The methods include: coding a workpiece by producing a code with a local modification in a material structure of a base material of the workpiece within a coding region, reading out the code by performing an eddy-current measurement of a local distribution of an electrical conductivity and/or a permeability of the base material by an eddy-current sensor along a reading-out section in a reading region at least partially including the coding region, a signal calibrated to a distance of the eddy-current sensor from a surface of the reading region being determined for reading out the code, storing the read-out code in a storage device, repeating the reading out of the code by repeatedly performing the eddy-current measurement, and identifying the workpiece by comparing the stored read-out code in the storage device and the repeated read-out code.

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