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US 2013/0258684 A1Published application
Lighting system
AssigneeDow AgroSciences LLC
InventorsYang Yang, Frank Burroughs, Kristen Curlee
Life of this patent
Estimating the term…
Abstract
An apparatus and a method of using at least one of a distance sensor and a light intensity sensor to adjust the distance between an artificial light source and plant canopy to control light intensity at the plant canopy is disclosed.
Claims20
An apparatus for controlling the light intensity received at a plant canopy comprising:
- an artificial light source positioned generally above a plant canopy;
- a light intensity sensor positioned to measure a light intensity, the light intensity corresponding to one of the plant canopy and a distance above the plant canopy;
- a first height adjustment unit configured to adjust the distance between the artificial light source and plant canopy;
- wherein the first height adjustment unit adjusts the distance between the artificial light source and plant canopy in response to the light intensity measured by the light intensity sensor.
1 more element
An apparatus for providing artificial light to a plant canopy comprising:
- an artificial light source positioned generally above a plant canopy;
- a position sensor coupled to the artificial light source and measuring a distance between the distance sensor and the plant canopy;
- and
- a first height adjustment unit configured to automatically adjust the position of the artificial light source in response to the distance measured by the position sensor.
1 more element
A method of controlling the light intensity received at a plant canopy comprising the steps of:
- providing a plurality of plants defining a plant canopy;
- providing artificial light from an artificial light source positioned above the plant canopy;
- measuring a light intensity with a light intensity sensor at one of the plant canopy and a predetermined distance above the plant canopy;
- and
- adjusting the distance between the plant canopy and artificial light source in response to the measured light intensity.
2 more elements
A method of controlling the light intensity received at a plant canopy comprising the steps of:
- providing a plurality of plants defining a plant canopy;
- providing artificial light from an artificial light source positioned above the plant canopy;
- and
- automatically adjusting a distance between the plant canopy and the artificial light source to maintain a threshold separation distance between the plant canopy and the artificial light source.
1 more element
Dependencies are inferred from the claim text.