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Adaptive integrated daylight and electric light control with multi-sensor for controlled-light distribution

  • US 8,941,322 B2
  • Filed: 04/04/2012
  • Issued: 01/27/2015
  • Est. Priority Date: 04/13/2011
  • Status: Expired due to Fees
First Claim
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1. A method of controlling light distribution in a space including multiple installed light sources and an external light source, comprising:

  • measuring luminance levels of light from the multiple installed light sources and the external light source at a plurality of measuring areas within the space;

    controlling an intensity level of each of the installed light sources and an amount of light from the external light source entering the space based on the measured luminance levels; and

    tuning the intensity level of each of the installed light sources and the amount of external light entering the space simultaneously to optimize the conditions such that a mean-squared error between the measured luminance levels and pre-defined target luminance levels for the respective plurality of measuring areas is minimized, and the amount of energy consumed by the multiple installed light sources is minimized.

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