METHOD AND SYSTEM FOR CALIBRATING A LIGHT BASED POSITIONING SYSTEM
In one aspect the present disclosure relates to a method for manually calibrating a light based positioning system in a location. In some embodiments, the method includes providing a map of positions of a plurality of light sources in the location; while positioned under one of the plurality of light sources on the map, receiving an identification code from the light source, wherein the identification code identifies the light source; and updating the map with the identification code for the light source. In some embodiments, the light source can be a light emitting diode.
1 . A method for manually calibrating a map of a light based positioning system having a plurality of asynchronous light sources in a location, the method comprising:
providing a map data structure on a mobile device, the map data structure comprising positions of the plurality of light sources in the location;
while positioned under one of the plurality of light sources of the map data structure, wherein the light source has a position stored by the map data structure, the mobile device receiving a broadcast identifier from the light source, wherein the identifier identifies the light source; and
based on the received identifier, updating the map data structure to associate the identifier for the light source with the position on the map of the light source.
2 . The method of claim 1 , wherein the light source comprises a light emitting diode.
3 . The method of claim 1 , wherein the light source comprises a fluorescent light source.
4 . The method of claim 1 , comprising transmitting the identifier of the light source and the map location to a remote server.
5 . The method of claim 4 , wherein the method comprises transmitting metadata to the server.
6 . The method of claim 5 , wherein the metadata comprises Wi-Fi access points, a received signal strength indication, cellular tower information.
7 . The method of claim 1 , wherein the location comprises an indoor location.
8 . The method of claim 1 , wherein the identifier is broadcast from the light source as a modulated signal.
9 . The method of claim 1 , wherein the map data structure comprises computer aided drafting files, user provided computerization, or hand drawn images.
10 . A device for manually calibrating a light based positioning system having a plurality of asynchronous light sources in a location, the device comprising:
memory for storing a map data structure, the map data structure comprising positions of the plurality of light sources in the location;
an image sensor for receiving an identifier from one of the plurality of light sources, wherein the identifier identifies the light source; and
a transceiver for transmitting the identifier of the light source and the map location to a remote server.
11 . The device of claim 10 , wherein the image sensor comprises a CMOS sensor.
12 . The device of claim 10 , wherein the location comprises an indoor location.
13 . The device of claim 10 , wherein the transceiver transmits metadata to the server and the metadata comprises Wi-Fi access points, a received signal strength indication, and cellular tower information.
14 . The device of claim 10 , wherein the identifier is broadcast from the light source as a modulated signal.
15 . A method for calibrating a light based positioning system having a plurality of asynchronous light sources, the method comprising:
electronically receiving information from a mobile device, the information comprising a light source identifier, an approximate position of the mobile device, and an error associated with the approximate position of the mobile device;
matching the light source identifier to light source position information stored in a map data structure, wherein the map data structure comprises positions of the plurality of light sources;
determining a position of the light source in the map data structure based on the information received from the mobile device; and
updating the light source position information stored in the map data structure to include the determined position.
16 . The method of claim 15 , wherein the light source comprises a light emitting diode.
17 . The method of claim 15 , wherein the light source comprises a fluorescent light source.
18 . The method of claim 15 , wherein the determining is performed using machine learning algorithms.
19 . The method of claim 15 , wherein the approximate position of the mobile device is determined using Wi-Fi, GPS, GSM or inertial sensors.
20 . The method of claim 15 , comprising electronically receiving information from a plurality of mobile devices.
21 . A server for calibrating a light based positioning system having a plurality of asynchronous light sources, the server comprising:
logic stored in memory for:
electronically receiving information from a mobile device, the information comprising a light source identifier, an approximate position of the mobile device, and an error associated with the approximate position of the mobile device;
matching the light source identifier to light source position information stored in a map data structure, wherein the map data structure comprises positions of the plurality of light sources;
determining a position of the light source in the map data structure based on the information received from the mobile device; and
updating the light source position information stored in the map data structure to include the determined position.