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:
Nov. 20, 2018
Filed:
Jul. 27, 2016
Eaton Intelligent Power Limited, Dublin, IE;
Joseph R. Casper, Syracuse, NY (US);
Christopher D. Nolan, Syracuse, NY (US);
Joseph J. Witkowski, Syracuse, NY (US);
Jeff R. Shuster, Syracuse, NY (US);
Brian M. Wilson, Syracuse, NY (US);
Eaton Intelligent Power Limited, Dublin, IE;
Abstract
A lighting control system includes a device controller containing control circuitry that is configured to control drive currents delivered to a plurality of light emitting diodes (LEDs) of a lighting device. The control circuitry generates commands to compensate for failed LEDs in the plurality of LEDs by controlling drive currents delivered to a group of LEDs so that the illuminance level of light detected by an illuminance sensor will not substantially change because of the failed LED, if the voltage across the group of LEDs is less than the threshold amount. The control circuitry also controls the plurality of LEDs in response to data received from a sensor configured to measure a characteristic value of light received from the lighting device, by controlling drive currents delivered to the LEDs if the detected characteristic value of light from the lighting device has moved above or below a threshold.