# US 9,521,722 B2 · LED lighting system

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- Number: US 9,521,722 B2
- Document ID: US9521722B2
- Status: Granted
- Kind: B2
- Application number: 14/549,337
- Filed: 2014-11-20
- Published: 2015-10-22
- Granted: 2016-12-13
- Earliest claimed: 2011-02-28
- Applicants: Chon Meng Wong; Belinda H. T. Wong; An-Kwok Ian Wong
- Inventors: Chon Meng Wong; Belinda H. T. Wong; An-Kwok Ian Wong
- Web page: https://patentgrep.com/patent/US9521722B2

## CPC

- F21V 23/0464: {the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors}
- F21S 4/28: rigid, e.g. LED bars
- F21S 8/03: {of surface-mounted type (F21S8/02, F21S8/04 take precedence; details of wall or floor bases F21V21/02)}
- F21V 13/08: the elements being filters or photoluminescent elements and reflectors
- F21V 14/04: by movement of reflectors {(in vehicle head lamps F21S41/675)}
- F21V 17/10: characterised by specific fastening means or way of fastening (F21V17/02 - F21V17/08 take precedence)
- F21V 23/003: {the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array}
- F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors}
- F21V 23/06: the elements being coupling devices {, e.g. connectors}
- F21V 33/0052: {Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor}
- F21V 33/0076: {Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices}
- G06Q 10/063114: {Status monitoring or status determination for a person or group}
- G06Q 10/0633: Workflow analysis
- H05B 45/10: Controlling the intensity of the light
- H05B 45/37: Converter circuits
- H05B 47/11: by determining the brightness or colour temperature of ambient light
- H05B 47/115: by determining the presence or movement of objects or living beings
- H05B 47/185: via power line carrier transmission
- H05B 47/19: via wireless transmission
- F21V 14/02: by movement of light sources {(in vehicle head lamps F21S41/657)}
- F21V 19/02: with provision for adjustment, e.g. for focusing
- F21W 2131/40: Lighting for industrial, commercial, recreational or military use
- F21W 2131/402: for working places
- F21Y 2103/10: comprising a linear array of point-like light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 47/187: {using power over ethernet [PoE] supplies}
- Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection
- Y02P 90/82: Energy audits or management systems therefor
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A lighting system includes at least one lighting apparatus having a light emitting element capable of emitting a controllably variable light output in a region. A position determination subsystem is capable of determining a position in three dimensions of at least one mobile entity within the region. A control subsystem is capable of variably controlling a light output of the at least one lighting apparatus according to the position of the mobile entity. The system may determine position by radio ranging with mobile electronic elements. The system may include multiple lighting elements and may determine light levels according to positions of multiple mobile entities. The system may include a database of information about lighting elements, mobile entities, and lighting plans that may be selected from mobile electronic elements.

## Claims

### Claim 1

A lighting system for use with one or more mobile electronics devices, said lighting system comprising:
a database for storing unique IDs of the one or more mobile electronics devices;
a plurality of light fixtures having unique identifiers;
the plurality of light fixtures further comprising a first light fixture with a first known location and a second light fixture with a second known location;
the first and the second known location being stored in the database;
said lighting system further comprises;
a control subsystem for controlling the one or more light fixtures;
a position determination subsystem in communication with the one or more electronic devices capable of determining positions in three dimensions of each of the one or more electronic devices;
a vector determination subsystem in communication with the position determination unit and with the one or more electronic devices;
wherein the one or more mobile electronics devices comprising:
an interface through which a user can communicate with the plurality of light fixtures and provide an input for setting a lighting level;
a light sensor measuring a light level;
wherein the one or more electronics devices transmitting a signal to the first or the second light fixture,
based on the received signal and the known location of the first and second light fixtures, the vector determination subsystem determines the exact position of the one or more mobile devices;
once the exact position of the one or mobile devices are determined, the control subsystem can adjust a light intensity, brightness or level based on the location of the one or more mobile devices, and/or the one or more mobile devices can transmit a personalized user preference through the input of the user interface to the control subsystem for adjusting a light based on the user selection;
wherein the personalized user preference is a plurality of pre-stored light illumination plans;
wherein based on the position determination, the control subsystem can track the movement of the one or more mobile devices and adjust the light intensity, brightness or level to allow cost-saving illumination plans; and
the control subsystem is determined to estimate a light output power required for each of the plurality of the light fixtures in respect to the position of the one or more mobile device in an area;
wherein the one or more plurality of the light fixtures are reducing light level simultaneously as the user is leaving the area.

### Claim 2 (depends on 1)

The system of claim 1, wherein:
the one or more mobile devices can be attached to a user, employee, and/or an object.

### Claim 3 (depends on 2)

The system of claim 2, wherein:
the control subsystem is capable of maintaining a tracking database of all the one or more mobile devices within its range;
the control subsystem with a real-time clock attached to the tracking database of the one or more mobile devices providing information for an inventory control;
wherein the one or more mobile devices are entities in a production line, productivity information is provided for a real-time productivity management; and
wherein the one or more mobile device are carried by an employee with attached location and real-time clock information time card that are stored in the tracking database.

### Claim 4 (depends on 3)

The system of claim 3, wherein:
the control subsystem is capable of associating the user, the employee or the object with a workflow process in real-time and determine production rate and/or human wage cost;
the control subsystem further assigning a coordinated lighting plan to the employees or the user at specific location and a specific time and determine a desired workflow plan to increase productivity.

### Claim 5 (depends on 3)

The system of claim 3, wherein:
a time determination subsystem is capable of providing real-time inventory keeping of the one or more mobile devices; and
the control subsystem is capable of alerting if the one or more mobile devices are moved unintentionally from its intended location.

### Claim 6 (depends on 3)

The system of claim 3, wherein:
a proximity determination among the one or more mobile devices provide contact tracing of the one or more mobile devices; and
maintaining a list of contact tracing in the database.

### Claim 7 (depends on 6)

The system of claim 6, wherein:
the control subsystem along with the database is capable of determining a duration of proximity of contact at predefined range.

### Claim 8 (depends on 3)

The system of claim 3, wherein:
the control subsystem in communication with a temperature sensor is capable of identifying a fire and providing an exit route to the one or more mobile devices;
wherein the control subsystem further providing building routes navigation directions in general.

### Claim 9 (depends on 1)

The system of claim 1, wherein:
the plurality of pre-stored light illumination plans includes one of;
wherein a lighting network map with ranging information to provide relevant actual light level information of other neighboring light fixtures to that particular light fixture, or fixtures that might be blocked from communicating directly with an occupant to determine the appropriate light level the one or more fixtures should provide knowing the location and preference of the occupant to all these fixtures.

### Claim 10 (depends on 6)

The system of claim 6, wherein:
the control subsystem capable of generating a proximity matrix map subsequent set of second tier contacts in the database; and
capable of extracting a contact tree of proximity contacts maintained in the database.