Method for length measurement of a flat good in a goods processing system, and arrangement for implementation of the method

US11293798B2 · kind B2 · utility

Assignee

• Francotyp-Postalia GmbH · DE

Inventors

• Frank Geserich · Friedrichsthal, DE
• Volker Baum · Berlin, DE

Key dates

• Filing date: Oct 27, 2017
• Grant date: Apr 5, 2022
• Expiry date: Mar 18, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/1916
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method and apparatus for length measurement of a flat good in a goods processing system having first and second stations, each having a sensor in the transport direction of the flat good, a control processor implements a path control and counts encoder pulses of an encoder in the first station. An event is determined by the sensor of the second station, and an associated numerical value Z1 of the encoder pulses is stored in the control processor, as is a numerical value Z2 for a distance between the two sensors is also stored. An additional event is determined by the sensor of the first station, and an associated numerical value Z3 of the encoder pulses is stored. As soon as both events are present, Z2 and the difference Δ=Z3−Z1 are added by the control processor, and the sum is used to designate the length.