Method and apparatus for conveying aggregate presence information using light
First Claim
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1. An LED node comprising an LED lighting fixture comprising one or more light emitting diodes configured to illuminate a space and a lighting control apparatus comprising:
- a presence sensor to sense a presence of an object and to provide responsive output;
an aggregator module configured to generate an aggregate presence value based on aggregate output of the presence sensor captured over a period of time; and
an output module to generate lighting instructions based on the aggregate presence value,wherein the lighting instructions are configured to cause the one or more light emitting diodes (LEDs) of the LED lighting fixture to emit a coded light signal encoded into the emitted light that carries information indicative of the aggregate presence value or emit light having a hue selected to convey the aggregate presence value.
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Abstract
The present disclosure is directed generally to lighting control, and more particularly, to various inventive methods, systems, computer-readable media (transitory and non-transitory) and apparatus for conveying aggregate presence information using light. For example, in some embodiments, output of a presence sensor over time may be aggregated, and an LED node may cause one or more LEDs to emit light having a property that conveys the aggregated captured output.
8 Citations
19 Claims
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1. An LED node comprising an LED lighting fixture comprising one or more light emitting diodes configured to illuminate a space and a lighting control apparatus comprising:
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a presence sensor to sense a presence of an object and to provide responsive output; an aggregator module configured to generate an aggregate presence value based on aggregate output of the presence sensor captured over a period of time; and an output module to generate lighting instructions based on the aggregate presence value, wherein the lighting instructions are configured to cause the one or more light emitting diodes (LEDs) of the LED lighting fixture to emit a coded light signal encoded into the emitted light that carries information indicative of the aggregate presence value or emit light having a hue selected to convey the aggregate presence value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. At least one non-transitory computer-readable medium comprising instructions that, in response to execution of the instructions by a computing device, cause the computing device to:
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receive, via a light sensor, coded light emitted from a light emitting diode (LED) node, where the coded light is encoded into the emitted light; demodulate the coded light emitted from the LED node to determine an aggregate presence value carried by the coded light signal that represents aggregate presence detected by the LED node over a period of time; render, on a display, output indicative of the determined aggregate presence value. - View Dependent Claims (16)
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17. A method of providing aggregate presence information, comprising:
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sensing, by a light emitting diode (LED) node, presence of one or more objects; generating, by the LED node based on the sensing over a period of time, an aggregate presence value, wherein said generating step comprises; charging, by the LED node, a capacitor while presence of one or more objects is sensed over a period of time; and discharging, by the LED node, the capacitor while no presence is sensed over a period of time; and selectively illuminating, by the LED node based on a charge of the capacitor, one or more LEDs of an LED lighting fixture to convey the aggregate presence value represented by the charge using a hue or saturation of the emitted light or a coded light signal, said one or more LEDs being configured to illuminate a space. - View Dependent Claims (18, 19)
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Specification