Adaptive integrated daylight and electric light control with multi-sensor for controlled-light distribution
First Claim
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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Accused Products
Abstract
A system and a method for controlling light distribution in a space including multiple installed light sources (111, 112, 221-223) and an external light source (103, 203). The method includes measuring the luminance levels of light from the multiple installed light sources (111, 112, 221-223) and the external light source (103, 203) at a plurality of measuring areas within the space, controlling the intensity level of each of the installed light sources (111, 112, 221-223) and the amount of light from the external light source entering the space (103, 203) based on the measured luminance levels, and tuning the intensity level of each of the installed light sources (111, 112, 221-223) and the amount of external light entering the space (103, 203) to optimize the conditions such that the 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 (111, 112, 221-223) is minimized.
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Citations
11 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A system of controlling light distribution in a space including multiple installed light sources and an external light source, the system comprising:
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a plurality of sensors 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; and one or more controllers for 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, wherein the at least one controller tunes 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. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable medium having stored thereon instructions for causing a processor to perform a process of controlling light distribution in a space including multiple installed light sources and an external light source, the process comprising:
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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 an amount of energy consumed by the multiple installed light sources is minimized.
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Specification