Apparatus for acquiring pendulum oscillations of crane loads using measurement techniques

US5491549A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfgang Wichner · Wendelstein, DE
• Ludwig Carbon · Erlangen, DE

Key dates

• Filing date: Nov 3, 1993
• Grant date: Feb 13, 1996
• Expiry date: Nov 3, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66C13/46
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

To be able to acquire pendulum oscillations in the case of cranes with a high degree of accuracy, a marking having a reflecting surface is disposed in the area of the load. Mounted on the crane are both lighting equipment directed at the marking as well as a line-scanning camera that is likewise directed at the marking and that has an image-sensor linear array. The image-sensor linear array is aligned longitudinally to the direction of swing (x). Its signal is evaluated in an evaluation device to determine the instantaneous position of the marking.