Luminaire associate

Patent metadata

Field	Value
Publication number	US-9945960-B2
Application number	US-201615337582-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Nov 21, 2013
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

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.

First claim

The invention claimed is:

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.

2. The method of claim 1 further comprising the step of broadcasting a signal that the LARD is set.

3. The method of claim 2 further comprising the steps of:
receiving a signal conveying a new stored reference geographical position for the luminaire associate;
replacing the stored reference geographical position with the new stored reference geographical position;
resetting the LARD; and
ceasing broadcast of the signal that the LARD is set.

Assignees

• Gen Electric

Inventors

• Hartman Michael James
• Barnett Bruce Gordon
• Hershey John Erik
• Dell'Anno Michael Joseph
• Soro Stanislava

Classifications

• H02J7/345

  using capacitors as storage or buffering devices · CPC title

• F21W2131/103

  of streets or roads · CPC title

• G01S11/02

  using radio waves (G01S19/00 takes precedence) · CPC title

• G01S11/06

  using intensity measurements · CPC title

• H05B47/19

  via wireless transmission · CPC title