Independent beacon based light position system

• US 9,835,710 B2
• Filed: 02/26/2016
• Issued: 12/05/2017
• Est. Priority Date: 07/26/2011
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: Ganick, Aaron, Ryan, Daniel
• Primary Examiner(s): WONG, ALLEN C
• Application Number:
  US15/054,726
• Publication Number:
  US 20160178724A1
• Time in Patent Office: 648 Days
• Field of Search: 348 61
• CPC Class Codes: G01S 5/0264 at least one of the systems being a non-radio wave positioning system
• CPC Class Codes: G01S 5/16 using electromagnetic waves other than radio waves
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04B 10/60 Receivers
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 25/531 by controlling rolling shutters in CMOS SSIS
• CPC Class Codes: H04N 25/76 Addressed sensors, e.g. MOS or CMOS sensors
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds

Abstract

Systems an methods are provided that disclose providing a positioning service for devices based on light received from one or more light sources. This light based positioning service uses light information transmitted by each light source to determine the position of the device. The positioning information can include three dimension position information in a building that can then be used to deliver services and information to a mobile device. The content delivered to a mobile device can include multimedia, text, audio, and/or pictorial information. The positioning information along with other location or positioning information can be used in providing augmented reality or location aware services. The light sources can be independent beacons that broadcast information in visible light at a rate that is undetectable by the human eye. Content can be retrieved from a server over a communications connection.

Claims

1. A system, comprising:

one or more databases, comprising;

indoor location information including identification codes related to light source installed in an indoor location, position information for each of the light sources in the indoor location, a map of the indoor location, and content related to the indoor location; and

a server, comprising;

a network interface;

a memory,

one or more logic modules stored in the memory,

a processor coupled to the network interface, the database, and the memory,

wherein when the processor is running the logic modules stored in the memory, the server is configured to perform functions, including functions to;

receive, via the network interface, a plurality of requests sent by a plurality of mobile devices from within an indoor location, wherein each respective one of the plurality requests contains information related to a light source identifier, identification of a current approximate position of a mobile device sending the respective request, and an error related to the current position approximation;

access the one or more databases associated with the indoor location, and

based on the information in the received requests, calibrate the position information for a light source associated with the light source identifier in the one or more databases.

2. The system of claim 1, wherein the server is further configured by the logic modules running on the processor when calibrating the position information of the light source associated with the light source identifier, to perform functions, including a function to:

use the current approximate position identification in each of the plurality of received requests to update a record of the light source associated with the light source identifier in the one or more databases.

3. The system of claim 1, wherein the server is further configured by the logic modules running on the processor, to:

receive with each request, metadata associated with the current approximate position of the requesting mobile device, the metadata including a current WiFi access point of the requesting mobile device, a received signal strength indication by the requesting mobile device or a cellular tower information related to the requesting mobile device; and

update records in the one or more databases associated with the indoor location using the metadata.

4. The system of claim 1, wherein the server is further configured by the logic modules running on the processor, when calibrating the position of the light source within the one or more databases to:

retrieve from a lighting plan in the one or more databases, physical coordinates of the position of the light source associated with the light source identifier; and

estimate an updated current approximate mobile device position using the current approximate position identification of the mobile device and an uncertainty value associated with the current approximate position identification in a model, wherein the model calculates degrees of probability due to changes in mobile device sensory input provided to the server as metadata of the requesting mobile device.

5. The system of claim 1, wherein the server is further configured by the logic modules running on the processor, to:

receive, via the network interface, an indication of inaccurate position information from a mobile device that position information associated with a location in the indoor location is inaccurate;

in response to the received indication, aggregate the received indication with indications received from other mobile devices to form an aggregate of inaccuracy indications associated with a respective light source;

access, in the one or more databases, a lighting plan associated with the location in the indoor location having the indicated inaccurate information in the one or more databases; and

based on the aggregated inaccuracy indications and the lighting plan, update the inaccurate position information associated with the location of a lighting device in the lighting plan with position information based on the current approximate position identification of each of the mobile devices whose received indication is included in the aggregate inaccuracy indications.

6. The system of claim 1, wherein the server is further configured by the logic modules running on the processor, to:

retrieve from each of the received requests, a selection of a light source, the selection indicating a light source that the requesting mobile device was beneath; and

update a lighting plan maintained in the one or more databases based on the retrieved selections.

7. The system of claim 6, wherein the server, when updating the lighting plan, is further configured by the logic modules running on the processor to:

assign a light source identifier associated with the selected light source in the respective request to physical coordinates based on the approximate current position of the mobile device retrieved from the respective request.

8. A method, comprising:

receiving, by a server via a network connection, a plurality of requests containing information sent by a plurality of mobile devices from within an indoor location, wherein each of the plurality requests contains information related to a light source identifier, an identification of a current approximate position of a mobile device sending the respective request, and an error related to the current position approximation of the mobile device;

accessing a one or more databases associated with the indoor location, and

calibrating, based on the information in each of the received requests, position information of a light source associated with the light source identifier in the one or more databases.

9. The method of claim 8, wherein calibrating the position information of the light source associated with the light source identifier further comprises:

using the current approximate position identification in each of the plurality of received requests to update a record of the light source associated with the light source identifier in the one or more databases.

10. The method of claim 8, further comprising steps of:

receiving with the plurality of requests user provided metadata associated with the current approximate position of the mobile device sending the respective request, the metadata including a current WiFi access point, a received signal strength indication by the mobile device or a cellular tower information related to the mobile device; and

updating additional databases associated with the indoor location using the metadata, the additional databases in addition to the one or more databases.

11. The method of claim 8, wherein calibrating the position of the light source within the one or more databases comprises steps of:

retrieving from a lighting plan in the one or more databases, physical coordinates of the position of the light source associated with the light source identifier; and

estimating an updated current approximate mobile device position using the current approximate position identification of the mobile device and uncertainty associated with the current approximate position identification in a model, wherein the model calculates degrees of probability due to changes in sensory input provided to the server as metadata.

12. The method of claim 8, further comprising steps of:

receiving an indication from a mobile device that position information associated with a location in the indoor location is inaccurate;

in response to the received indication, aggregating the received indication with indications received from other mobile devices to form an aggregate of inaccuracy indications;

accessing in the one or more databases a lighting plan associated with the location in the indoor location having the indicated inaccurate position information in the one or more databases; and

based on the aggregated inaccuracy indications and the lighting plan, updating the inaccurate position information associated with the location of a lighting device in the lighting plan.

13. The method of claim 8, further comprising steps of:

retrieving from each of the received requests, a selection of a light source, the selection indicating a light source that the requesting mobile device was beneath; and

updating a lighting plan maintained in the one or more databases based on the retrieved selections.

14. The method of claim 13, wherein updating the lighting plan further comprises steps of:

assigning a light source identifier associated with the selected light source in the respective request to physical coordinates based on the approximate current position of the mobile device retrieved from the respective request.

16. The server of claim 11, wherein the server is further configured by the logic modules running on the processor when calibrating the position information of the light source associated with the light source identifier, to perform functions, including a function to:

use the current approximate position identification in each of the plurality of received requests to update a record of the light source associated with the light source identifier in the one or more databases.

17. The server of claim 11, wherein the processor when running the logic modules is further configured to perform functions, including functions to:

receive with the plurality of requests user provided metadata associated with the current approximate position identification of the mobile device sending the respective request, the metadata including a current WiFi access point, a received signal strength indication by the mobile device or a cellular tower information related to the mobile device; and

update the one or more databases associated with the indoor location using the metadata.

18. The server of claim 11, wherein the processor when running the logic modules is further configured to perform functions, including functions to:

retrieve from a lighting plan in the one or more databases, physical coordinates of the position of the light source associated with the light source identifier; and

estimate an updated current approximate mobile device position using the current approximate position identification of the mobile device and uncertainty associated with the current approximate position identification in a model, wherein the model calculates degrees of probability due to changes in sensory input provided to the server as metadata.

19. The server of claim 11, wherein the processor when running the logic modules is further configured to perform functions, including functions to:

receive, via the network interface, an indication from a mobile device that information associated with a location in the indoor location is inaccurate;

in response to the received indication, aggregate the received indication with indications received from other mobile devices to form an aggregate of inaccuracy indications;

access in the one or more databases a lighting plan associated with the location in the indoor location having the indicated inaccurate information in the one or more databases; and

based on the aggregated inaccuracy indications and the lighting plan, update the inaccurate position information associated with the location of a lighting device in the lighting plan.

15. A server comprising:

a network interface coupled to a network associated with an indoor location and to one or more databases;

a memory;

one or more logic modules stored in the memory; and

a processor coupled to the network interface, the database, the memory, and the processor when running the logic modules stored in the memory is configured to perform functions, including functions to;

receive, via a network connection, a plurality of requests containing information sent by a plurality of mobile devices from within an indoor location, wherein each of the plurality requests contains information related to a light source identifier, an identification of a current approximate position of a mobile device sending the respective request, and an error related to the current position approximation identification;

access via the network interface the one or more databases associated with the indoor location, and

based on the information in each of the received requests, calibrate position information of a light source associated with the light source identifier in the one or more databases.