Luminaire associate
First Claim
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1. A method for detecting a luminaire associate relocation position from stored reference geographical position comprising the steps of:
- deriving an estimated geographical position for the luminaire associate from a GPS receiver contained within the luminaire associate;
deriving an estimate of lateral displacement by electronically sampling and processing data from a multi-axis accelerometer contained within the luminaire associate, wherein the data from the multiple-axis accelerometer comprises estimates of a spatial translation of the luminaire associate;
combining the estimated geographical position and the estimated lateral displacement using a sensor fusion algorithm to form a single estimate of spatial translation;
comparing the single estimate of spatial translation to a preset threshold of spatial translation;
setting a luminaire associate relocation datum (LARD) if the single estimate of spatial translation exceeds the preset threshold of spatial translation.
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Abstract
A street lighting fixture and street lamp used in street lighting containing an accelerometer that is used to detect and characterize acceleration events on a street lighting fixture. The accelerometer readings may be combined with GPS technology to determine a relocation of the street lighting fixture.
80 Citations
3 Claims
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1. A method for detecting a luminaire associate relocation position from stored reference geographical position comprising the steps of:
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deriving an estimated geographical position for the luminaire associate from a GPS receiver contained within the luminaire associate; deriving an estimate of lateral displacement by electronically sampling and processing data from a multi-axis accelerometer contained within the luminaire associate, wherein the data from the multiple-axis accelerometer comprises estimates of a spatial translation of the luminaire associate; combining the estimated geographical position and the estimated lateral displacement using a sensor fusion algorithm to form a single estimate of spatial translation; comparing the single estimate of spatial translation to a preset threshold of spatial translation; setting a luminaire associate relocation datum (LARD) if the single estimate of spatial translation exceeds the preset threshold of spatial translation. - View Dependent Claims (2, 3)
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Specification