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. 24, 2017
Filed:
Dec. 22, 2014
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
George Rollins, Lowell, ME (US);
Rockwell Automation Technologies, IInc., Mayfield Heights, OH (US);
Abstract
A light curtain controller is provided that serially tunes or optimizes the operating margin of each channel during an initialization sequence. The controller measures and adjusts the operating margin for each emitter-receiver pair individually, such that the margin for each channel satisfies a defined optimization criterion. In this way, the light curtain's unique environmental and installation conditions are taken into account when tuning each channel. By individually tuning each emitter-receiver pair, the operating margin of each channel is set sufficiently high to ensure accurate object detection, while excessive margin is limited to prevent signal processing errors, such as those associated with adjacent-channel signal bleed-through, susceptibility to internal and external noise, etc.