Wireless lighting control using radiofrequency and infrared communication

Abstract

Disclosed herein is a wireless lighting control system and method that utilizes infrared (IR) and radiofrequency (RF) communication to enable efficient and scalable system deployment to manage a plurality of installed light fixtures and / or to create and control groups of light fixtures within the installed light fixtures. The subject invention may manage a plurality of channels, which may be organized into zones or larger areas within a building, such as floors. The system is designed to scale seamlessly, making it suitable for installations ranging from small rooms to expansive enterprise environments.

Description

WIRELESS LIGHTING CONTROL USING RADIOFREQUENCY AND INFRARED COMMUNICATIONCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to U.S. Provisional Patent Appl. No. 63 / 749,080, filed January 24, 2025, the entire contents of which is incorporated by reference herein.BACKGROUND

[0002] The present disclosure relates to wireless lighting control systems, specifically those utilizing radiofrequency (RF) and infrared (IR) communication technologies for efficient and scalable management of lighting fixtures.

[0003] Modem building management increasingly relies on advanced lighting control systems to enhance energy efficiency, convenience, and flexibility. Traditional systems often depend on wired connections, which can be cumbersome and costly to install, especially in retrofit projects. These systems typically require extensive cabling and complex configurations, making them less adaptable to changes in building layouts or lighting requirements. Additionally, many existing solutions depend on centralized controllers or mobile applications, which can introduce latency, require continuous maintenance, and pose security risks.

[0004] Despite advancements in technology, current solutions still face significant limitations. Many systems use short-range communication protocols, such as Bluetooth, which can struggle with signal interference and limited range, particularly in large or multi-floor buildings. Furthermore, the commissioning process for these systems often involves complex software or mobile apps, which can be challenging for installers and facility managers to navigate. There is a clear need for a more efficient, scalable, and user-friendly lighting control system that can overcome these challenges and provide reliable performance across various installation environments.SUMMARY

[0005] Disclosed herein is a wireless lighting control system that utilizes infrared (IR) and radiofrequency (RF) communication to enable efficient and scalable system deployment to manage a plurality of installed light fixtures and / or creating and controlling groups of light fixtures within the installed light fixtures. The subject invention may manage a plurality ofchannels (e.g. up to 255 channels), which may be organized into zones or larger areas within a building, such as floors. The system is designed to scale seamlessly, making it suitable for installations ranging from small rooms to large areas including thousands of light fixtures.

[0006] In one aspect of the subject invention, a method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures is provided, where each of the light fixtures has a node associated therewith. The method includes forming a first group of the light fixtures by: i. determining a first profile of settings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control; ii. aiming the remote control generally in the direction of a selected light fixture of the installed light fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infrared signal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings; iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and, iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures, wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control per the first profile of settings. The method further includes providing a firmware update to the remote control; and, transmitting, by the remote control, the firmware update simultaneously to the nodes of at least a portion of the installed light fixtures using radio frequency transmission, including transmitting indiscriminately the firmware update to at least a portion of the first group of the light fixtures and to installed light fixtures outside of the first group of the light fixtures. Advantageously, the subject invention provides for grouping of light fixtures for wireless control, with separate ability to indiscriminately update firmware on installed light fixtures, regardless of grouping.

[0007] In a further aspect of the subject invention, a method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures is provided, where each of the light fixtures has a node associated therewith. The method includes forming a first group of the light fixtures by: i. determining a first profile ofsettings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control; ii. aiming the remote control generally in the direction of a selected light fixture of the installed light fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infrared signal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings; iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and, iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures, wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control per the first profile of settings; and, wherein, the first profile of settings includes at least one identifier to identify the light fixtures of the first group of the light fixtures. Advantageously, the subject invention provides for grouping of light fixtures for wireless control, with identifiers being utilized to differentiate light fixtures and groups of light fixtures.

[0008] In yet a further aspect of the subject invention, a method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures is provided, where each of the light fixtures has a node associated therewith. The method includes forming a first group of the light fixtures by: i. determining a first profile of settings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control; ii. aiming the remote control generally in the direction of a selected light fixture of the installed light fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infrared signal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings; iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and, iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures, wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control perthe first profile of settings; wherein, the first profile of settings includes a specified operating radio frequency; and, wherein a radio receiver or transceiver associated with the node associated with the selected light fixture is set to receive and transmit radio signals at the specified operating radio frequency. Advantageously, the subject invention provides for simultaneous wireless control of light fixtures and groups of light fixtures, with different operating radio frequencies being utilized to minimize cross-talk or other signal interference between light fixtures and groups of light fixtures.BRIEF DESCRIPTION OF THE FIGURES

[0009] Figure 1 is a schematic generally showing the system or arrangement of the subject invention;

[0010] Figure 2 is a plan view of a remote control useable with the subject invention;

[0011] Figures 3 A and 3B show the remote control with exemplary displayed menus;

[0012] Figure 4 is a schematic of possible components of a remote control in accordance with the subject invention;

[0013] Figure 5 is a schematic of a possible arrangement of a factory installed node;

[0014] Figures 6A-6C show a possible arrangement of field installing a node;

[0015] Figure 7 is a schematic of possible components of a node in accordance with the subject invention;

[0016] Figure 8 is a flowchart of a method of commissioning light fixtures in accordance with the subject invention;

[0017] Figure 9 is a plan view of a wall light switch useable with the subject invention;

[0018] Figure 10 is a schematic of possible components of a wall light switch in accordance with the subject invention; and,

[0019] Figure 11 is a flowchart of a method of pairing a wall light switch with light fixture(s) in accordance with the subject invention.DETAILED DESCRIPTION

[0020] In exemplary embodiments, the wireless lighting control system features a long-range transceiver and uses a point-to-point method of network topology. Unlike mesh wireless systems, such as Bluetooth-based systems, the wireless lighting control system may rely on nodes which communicate directly with each other, enabling efficient group control and scalability. The setup and management of the wireless lighting control system of the subject invention may be conducted via infrared (IR) signaling by a remote control, thereby facilitating straightforward commissioning without requiring complex software or applications.

[0021] In exemplary embodiments, the wireless lighting control system may include a dual technology remote that supports both IR and radio frequency (RF) communication. This enables granular control of individual targeted lights using IR for commissioning and localized adjustments and RF for broadcasting updates indiscriminately. The RF functionality extends the system's range and allows updates across multiple nodes, effectively serving as a portable control hub.

[0022] In exemplary embodiments, the wireless lighting control system utilizes a novel pairing method for personal control devices, such as wall switches. Unlike conventional systems that often rely on a centralized controller or require dual communication capabilities (e.g., both IR and RF) in every device, the wireless lighting control system may employ a streamlined and efficient RF-based pairing process for pairing a wall switch with a pre-defined light fixture or group of light fixtures.

[0023] The pairing process is intuitive and quick, eliminating the need for additional software or mobile applications. Installers or users can complete the setup using just the handheld remote, ensuring minimal setup time and ease of use.

[0024] Alternatively, the wireless control system may pair individual light fixtures with a wall switch, independent of any pre-defined groupings. With this approach, the wall switch isinitially placed into a listening state with a control signal being transmitted by the remote control to a selected light fixture intended to be paired with the wall switch. The control signal may be transmitted by IR communication. In response to receiving the control signal, the node of the selected light fixture in turn broadcasts a pairing radio signal. The listening wall switch receives the pairing radio signal and is then configured to be paired with the selected light fixture. The pairing radio signal may include identifier(s) to identify the selected light fixture to enable subsequent control. This process may continue on a fixture-by-fixture basis to pair selected light fixtures with the wall switch to be controlled thereby. As a further alternative, the pairing radio signal may include identifier(s) which identify a group of light fixtures, such as a channel assigned to a group of light fixtures. This allows for the wall switch to pair with a group of light fixtures through a single pairing.

[0025] In exemplary embodiments, commissioning of the wireless lighting control system may be performed using the remote control, relying on IR communication to configure groups of light fixtures managed by the same set of settings. The remote control further has RF capability which enhances this system by enabling RF broadcasts for systemwide updates, reducing setup time and increasing efficiency.

[0026] In exemplary embodiments, the wireless lighting control system is designed to adapt with user needs, capable of use with a single-room setup to large, even multi-floor, environments.

[0027] In exemplary embodiments, a wireless lighting control system may include one or more of the following components: node(s), hand-held remote control(s), wall switch(es), and light fixture(s). The system may include one or more of the following components as subcomponents of any of the foregoing and / or as stand-alone components configured to operate with one or more of the foregoing: RF transceiver s), IR transceiver(s), digital display(s) (such as E-ink display(s), power supply(ies), lighting controls (on / off switches, dimmers and so forth), occupancy / vacancy sensors(s), photosensor(s) and, repeater(s).

[0028] In exemplary embodiments, the node is a device associated with a light fixture, capable of wireless communication using IR and RF technology. It serves as the primary communication unit for each light fixture, enabling each light fixture to receive and transmitcontrol signals, and as a control unit providing control signals to the associated light fixture to turn lights on / off, dim / brighten lighting, and so forth. The node ensures that light fixtures may be grouped and controlled efficiently, facilitating seamless integration into the overall system.

[0029] As used herein, a “node” is an electronic component having a computer processing unit (CPU) with an associated non-transitory memory for storing instructions therein. The node is configured to receive and transmit IR and RF signals through an IR transmitter / IR receiver and an RF transmitter / RF receiver, respectively. The IR transmitter / IR receiver may be provided as separate components or as a single transceiver. Likewise, the RF transmitter / RF receiver may be provided as separate components or as a single transceiver. The node, particularly the node CPU, is configured to encode and decode IR and RF signals. The node may be provided as a single enclosed assembly or as a collection of components electrically connected to operate together. At least one power supply is also provided with, or associated with, the node to provide power thereto. The node may be factory installed or field installed on a light fixture.

[0030] The node may be provided separate from electronics or controls of an associated light fixture. The node may provide electrical signals to the light fixture to adjust light output thereof, based on received IR and / or RF signals. The node is a “middle man” within the system between the remote control and the light fixtures. Control hardware may be provided on the light fixtures, such as on / off switches, dimmers, and so forth, with the control hardware being controlled in response to signals provided by the nodes to the light fixtures.

[0031] In exemplary embodiments, the hand-held remote-control device may be configured to transmit configuration settings to the nodes using IR communication during commissioning. The remote control allows installers to easily set up and manage the lighting control system without the need for complex software or mobile applications. The remote control provides settings wirelessly to ensure that each node is correctly configured and is assigned to the appropriate channel and zone.

[0032] In exemplary embodiments, the dual -technology remote control device may be capable of both IR and RF communication, used for broadcasting configurations and updates across multiple nodes. The remote control provides granular control of individual lighting fixturesusing IR for localized adjustments and RF for broader updates. It serves as a portable control hub, extending the system's range and enhancing overall management efficiency.

[0033] In exemplary embodiments, the wall switch is a control device configured for RF communication, used to control a defined group of lighting fixtures. It simplifies user interaction by allowing manual control of paired light fixtures. The wall switch may be paired within the system utilizing the remote control, thereby providing quick and reliable setup.

[0034] In exemplary embodiments, the light fixture(s) or lighting fixture(s) (used interchangeably herein) may be any form of luminaire. Within the system, each light fixture is equipped with a node for wireless communication and control. The light fixtures are the end points of the lighting control system where light is generated, receiving commands from the associated nodes to adjust lighting levels and behaviors.

[0035] In exemplary embodiments, RF transmitted s), receiver(s), and / or transceiver(s) may be components within the nodes and within the remote control to enable RF communication. The RF transmitter(s), receiver(s), and / or transceiver(s) facilitate reliable wireless transmission and receipt of RF signals between the nodes and the remote control. The RF signals may be adjusted for short- or long-range transmission, depending on an associated installation. This is useful for scalable system deployment and minimization of signal confusion.

[0036] In exemplary embodiments, IR transmitter(s), received s), and / or transceiver(s) may be components within the nodes and within the remote control to enable IR communication between the nodes and the remote control. This allows for the transmission of configuration settings to the nodes during commissioning. The IR transmitter ensures precise and direct line-of-sight communication with individual nodes, facilitating accurate setup.

[0037] In exemplary embodiments, the digital display on the remote control is provided for user interface and configuration settings. Utilizing menu-driven selection, the digital display provides a readable and intuitive interface for users to navigate through available settings and options. The digital display may be an E-ink display for energy-efficiency.

[0038] In exemplary embodiments, the wireless lighting control system includes one or more power supplies as source(s) of power for the nodes, remote control device, and wall switches, typically being batteries (rechargeable or non-rechargeable) or a direct power connection (direct or alternating current). This ensures that all components of the system remain operational and responsive. The power supplies are designed to be reliable and long-lasting, minimizing maintenance requirements.

[0039] In exemplary embodiments, software or firmware may be provided with the remote control that organizes nodes into channels and assigns them to zones, e.g., floors. Channel / zone assignment allows for the logical grouping of lighting fixtures based on their control requirements. Channel / zone assignment facilitates efficient organization and control of lighting across various spaces by allowing users to assign both channels and floors to the nodes associated with lighting fixtures. By doing so, it ensures that the system may be tailored to the specific layout and requirements of the installation environment.

[0040] The assignment of channels may involve grouping nodes into logical zones where each zone represents a specific area or group of lighting fixtures that share the same control behavior. This allows for precise control over lighting in different areas, ensuring that each zone may be managed independently without interference from other zones. The ability to assign up to 50 channels per floor (any quantity of channels being useable) provides flexibility in organizing lighting fixtures according to the unique needs of the space(s). In addition to channel assignment, floor enhances functionality with multi-story structures. This hierarchical structure helps minimize crosstalk or signal interference (e.g., RF interference) between different floors, ensuring that signals intended for one floor do not affect another. By supporting a plurality of floors (e.g., eight (8) or more floors), comprehensive management of lighting across multifloor buildings is achievable, making it suitable for expansive installations. Overall, channel / zone assignment enhances the performance and scalability of the wireless lighting control system by providing a robust framework for organizing and controlling lighting fixtures. It ensures that the system may be easily adapted to various installation environments, offering optimal performance and flexibility. In exemplary embodiments, the adaptive range control module is a component within the remote control that may adjust the RF broadcast range to limit the pairing process to devices within a specific proximity. This feature preventsaccidental pairing of unintended devices, ensuring precise and reliable configuration. The adaptive range control module enhances the overall security and efficiency of the system.

[0041] As will be appreciated by those skilled in the art, the order of assigning channels and zones may be altered, e.g., having zones assigned first, with channels subsequently assigned. This allows for first assigning by an area or zone (e.g., a floor) and then assigning channels within that area or zone. For example, a floor may be assigned to a group of light fixtures with a sub-group of the light fixtures being assigned to a specific channel.

[0042] In exemplary embodiments, the one or more sensors are components within, or associated with, the system being possibly located on any the light fixture(s), the node(s), or as stand-alone being communicatively linked with one or more of the node(s) and / or light fixture(s). The sensors may be motion sensors or photosensors. Motion sensor(s) may be provided which provide signal output indicative of the presence or absence of occupants. Photosensor(s) may be provided which provide signal output indicative of light levels (e.g., daylight or ambient light sensing).

[0043] In exemplary embodiments, the wireless lighting control system may incorporate various operational modes, such as occupancy and vacancy modes, which are integral to both the firmware and software components of the system, as well as the physical hardware of the system. The system may be configured to consider a temporal element, e.g., to define a duration of an absence of occupants in setting when to turn off or turn down light output. The occupancy / vacancy mode module may enhance energy efficiency and convenience. Similarly, a daylight harvesting mode may be achieved where the light fixtures are controlled to supplement measured daylight to achieve a desired overall level of light.

[0044] The operational modes may be embedded within the firmware and software, particularly within the nodes, thereby allowing the system to intelligently manage lighting based on the presence or absence of occupants. The firmware and software may be programmed to interpret received signals and execute the appropriate lighting adjustments, ensuring energy efficiency and user convenience. For example, when motion is detected by a motion sensor, the occupancy mode may be activated, automatically turning on the lights. Conversely, when no motion is detected for a specified period, the system may switch tovacancy mode, dimming or turning off the lights to conserve energy. By combining the capabilities of firmware, software, and sensor output, the system offers a comprehensive solution for dynamic lighting control. This integration ensures that the system may respond promptly to changes in occupancy, providing a seamless and efficient lighting experience for users.

[0045] Advantageously, the motion sensors may be provided separate, i.e., stand-alone, from the nodes or light fixtures, configured to transmit sensor output, e.g., by RF transmission. In addition, or alternatively, a limited number of light fixtures may be provided with sensors, thereby avoiding the need to equip all fixtures with sensors; the nodes associated with the limited number of light fixtures having the sensors may transmit sensor output, e.g., by RF transmission. The transmitted sensor data may have encoded channel / zone details thereby allowing for receiving nodes to evaluate whether the received sensor data is relevant. Shared sensor data allows light fixtures to be grouped within the system to simultaneously respond to the same sensor signal, whether provided by a sensor separate from the light fixtures or provided by a sensor mounted to a node or light fixture.

[0046] In exemplary embodiments, the commissioning process of the wireless lighting control system is designed to be straightforward and efficient. Initially, the remote control may be used to transmit configuration settings to the nodes of interest using IR communication. The dualtechnology remote control utilizes its IR capabilities to ensure precise and direct communication with individual nodes, facilitating accurate setup without the need for complex software or mobile applications. This step involves pointing the remote at each node to ensure precise and direct communication, allowing for the accurate setup of each lighting fixture within the system. IR line-of-sight communication best ensures that each desired light fixture is correctly selected.

[0047] The remote control is dual -technology, capable of both IR and RF communication. This allows for indiscriminate RF broadcasting to broadcast updates (changes, upgrades, downgrades) across multiple nodes, after initial commissioning using IR communication. There is no concern here with selection of particular light fixtures. The RF functionality allows for broad distribution, thereby enabling system-wide changes to be implemented efficiently. This step significantly reduces setup time and increases the overall efficiency of the system, asit allows for simultaneous updates to multiple nodes without the need for individual configuration.

[0048] Additionally, the dual-technology remote control facilitates the pairing of personal control devices, such as wall switches, via RF communication. By activating a pairing mode on the wall switch and using the remote control to transmit pairing instructions, the wall switch may be assigned to a specific channel for controlling grouped lighting fixtures. This streamlined process eliminates the need for additional software or mobile applications, ensuring minimal setup time and ease of use. Alternatively, light fixtures may be selected and individually paired with a selected wall switch. Overall, the pairing process is designed to be user-friendly and adaptable, allowing for quick and reliable setup of the wireless lighting control system across various installation environments.

[0049] In various embodiments, the wireless lighting control system may be adapted to different installation environments and user requirements. For instance, the nodes associated with lighting fixtures may be designed in various sizes and shapes to fit different types of luminaires, such as flat panels, troffers, strip lights, and high bay fixtures. The nodes may be powered by different sources, including batteries (rechargeable and / or non-rechargeable), direct power connections (direct and / or alternating current), or even solar panels, depending on the installation environment and energy efficiency goals. The hand-held remote control may feature different types of displays, such as LCD or OLED screens, in addition to the E-ink display, to provide users with a clear and intuitive interface for configuration settings. The dualtechnology remote control may be equipped with additional functionalities, such as voice control or touch screen capabilities, to enhance user interaction and convenience. The wall switches may be designed with various button configurations, including single rocker, double rocker, or even touch- sensitive panels, to cater to different user preferences and control needs. RF transmitter(s), receiver(s), and / or transceiver(s) within the nodes and the remote control may support different frequency bands to ensure reliable communication in various environments, including industrial settings with high levels of interference. The IR transmitter(s), receiver(s), and / or transceiver(s) may be enhanced with a wider transmission angle or increased range to facilitate easier commissioning in large or complex spaces. The dimming controls may be programmed to support different dimming curves, such as linear or logarithmic, to provide a more customized lighting experience. Additional sensors, such astemperature or humidity sensors, may be utilized to provide more comprehensive environmental control.

[0050] With reference to Figure 1, an arrangement 10 is shown for wirelessly controlling and managing a plurality of light fixtures 12. The arrangement 10 includes a remote control 14 for wirelessly communicating with nodes 16, each associated with one of the light fixtures 12.

[0051] The light fixtures 12 are installed, operating light fixtures being hard wired to power as known in the art. The light fixtures 12 may be provided in various quantities and spread over different spaces, separated by walls or other dividers, or located on different floors, of a building or other structure. The light fixtures 12 may be of any type of luminaire capable of generating and emitting light. By way of non-limiting example, the light fixtures 12 may be selected from: flat panels, troffers, strip lights, ceiling-mounted fixtures, wall-mounted fixtures, suspended fixtures, and high bay fixtures. The light fixtures 12 may include lightgenerating elements of any type, including, but not limited to, solid state lighting elements (e.g., light emitting diodes (LEDs), organic light-emitting diodes (OLEDs), polymer light emitting diode (PLEDs)). In addition, the light fixtures 12 may have standard components such as a driver (particularly for solid state lighting) or control module, battery back-up, light output controls (power switch, dimmers), sensors (motion sensors, daylight sensors), and so forth.

[0052] The arrangement 10 is configured to control installed, operating light fixtures without the need for electrically re-wiring power connections. As discussed below, the light fixtures 12 must be equipped with the nodes 16, which may be factory installed or field installed, to operate within the arrangement 10. With factory installation of the nodes 16, the light fixtures 12 are fully ready for operation within the arrangement 10 without alteration. With field installation of the nodes 16, the nodes 16 must be installed on each of the light fixtures 12 intended for the arrangement. It is possible to manufacture or assemble the light fixtures 12 in a factory with a ready connection (e.g., externally accessible port or jack), as discussed below, to allow for easy connection and installation of the nodes 16.

[0053] As shown in Figure 2, the remote control 14 is preferably configured to be hand-held. As shown in Figure 2, the remote control 14 may include a housing 18, a display screen 20,and one or more user interface(s) 22. The display screen 20 may be of any type of digital display configured to use electronic means to present visual information like text and / or images, including, but not limited to, LCD (Liquid Crystal Display), LED (Light Emitting Diode), OLED (Organic Light-Emitting Diode), MicroLED (microscopic LEDs), and E-ink displays. The user interface(s) 22 are configured to accept inputs from a user, the inputs being useable to make selections, enter commands, and any other functions needed to facilitate control or management of the arrangement 10. The display screen 20 may be configured as a touch screen which may detect touch input from a user, as known in the art. As a touch screen, the display screen 20 may act as a user interface 22 (e.g., as a GUI (graphical user interface)) in addition to being a display. The user interface(s) 22 may be in any form for accepting user inputs, including, but not limited to, directional pad(s) (D-pad(s)), buttons, speaker(s) for accepting voice commands, keypad, track pad, joystick, jog dial, and so forth.

[0054] As shown in Figures 3 A and 3B, the user interface(s) 22 may be configured to operate in conjunction with the display screen 20 such that navigable menus are displayed on the display screen 20 with the user interface(s) 22 allowing for navigation of the menus and for selection of menu items. The user interface(s) 22 may be used also for inputting data or other information, separate from any displayed menus or selections. With reference to Figure 3A, an exemplary menu is shown in the display screen 20. As shown schematically by the representation of a finger, the user interface 22, for example, as shown, a directional pad, may be used to navigate the displayed menu and to select a desired listed item. Figure 3B shows an exemplary listing of user-adjustable settings. The user interface 22 may be utilized to select different listings and to adjust the settings thereof. In addition, as shown schematically by the representation of a finger, the user interface 22, for example, as shown, a button, may be used to issue a command, such as “Send,” resulting in the selected items being sent as a profile of settings. The user interface(s) 22 may be configured to accept other commands.

[0055] With reference to Figure 4, the remote control 14 may be provided with a computer processing unit (CPU) 24 with an associated non-transitory memory 26 for storing data and instructions, IR transmitter 28, RF transmitter 30, and power supply 32. Optionally, the remote control 14 may be provided with one or more data input interface(s) 34 to allow data, profiles of settings, firmware, and so forth, to be uploaded / downloaded to the memory 26. The data input interface(s) 34 may be in any form, including, but not limited to, wireless transceiver(e.g., configured to Bluetooth standard), jack, port (e.g., USB port), and so forth. The power supply 32 may be one or more batteries (rechargeable and / or non-rechargeable), integrated rechargeable packs (e.g., LiPo / Li-ion packs), electrical jack configured to receive electrical wire connected to external power source (e.g., wire plugged into external device or wall socket), and so forth.

[0056] It is noted that the remote control 14 is provided with dual communication capabilities for IR and RF communication. At a minimum, the remote control 14 must transmit IR and RF signals. The remote control 14 may be also configured to receive IR and / or RF communications. Thus, it is possible to provide an IR receiver 36 and / or to provide an RF receiver 38 with the remote control 14. The IR transmitter 28 and the IR receiver 36 may be separate components or provided as a single component, e.g., as a transceiver. Likewise, the RF transmitter 30 and the RF receiver 38 may be separate components or provided as a single component, e.g., as a transceiver. The CPU 24 is electrically connected to the IR transmitter 28 / IR receiver 36 and the RF transmitter 30 / RF receiver 38 to encode and decode IR and RF signals as needed.

[0057] The nodes 16 may be factory installed into an associated light fixture 12 or field installed where mounted to an installed light fixture 12. The node 16 is provided with, or associated with, an IR receiver 40 for receiving IR signals from the remote control 14. In use, the IR receiver 40 must be visible to a user to allow for line-of-sight IR communication with the remote control 14. Thus, as shown, in Figure 1, the nodes 16 must be at least partially visible on the associated light fixture 12, particularly, at least the IR receiver 40 must be visible, both being visible outside the associated light fixture 12 and below the ceiling to not be obscured thereby. With factory installation, as shown in Figure 5, the node 16 may be partially mounted within the associated light fixture 12 to have at least the IR receiver 40 with line-of-sight through an opening 41 in the light fixture 12 particularly to be visible from outside the light fixture 12 and to be visible from below the ceiling. Alternatively, as shown in Figure 6A, the light fixtures 12 may be provided with an externally-exposed port or jack 42 which permits the node 16 to be mounted thereto to have the node 16 be located at least partially externally of the associated light fixture 12 to be visible from below the ceiling. U.S. Patent No.11,215,350 Bl, to the assignee herein, discloses a suitable arrangement useable for mounting a node 16 to a light fixture 12 using a port or jack. U.S. Patent No. 11,215,350 Bl isincorporated by reference herein. The externally-exposed port or jack 42 may be factory installed in the light fixtures 12 to allow for operation with later-installed nodes 16. The externally-exposed port or jack 42 is preferably located on a downward-facing surface of the light fixture 12 to be easily accessed for installation of the nodes 16 and for good visibility.

[0058] As shown in Figure 6B, the nodes 16 may include a housing 44. The housing 44 is preferably provided where the nodes 16 are field installed. Where the nodes 16 are factory installed, the nodes 16 do not necessarily require the housing 44, particularly for components located internally of the associated light fixture 12. Thus, the nodes 16 may be a collection of partially-housed or unhoused components.

[0059] Where the nodes 16 are to be field installed, the housing 44 may be provided with a jack or plug 46, as described in U.S. Patent No. 11,215,350 Bl, to be received in the externally-exposed port or jack 42 of the associated light fixture 12 in forming an electrical connection between the socketed node 16 and the associated light fixture 12. Preferably, a USB port / plug arrangement is utilized.

[0060] The IR receiver 40 is provided on the housing 44 to be exposed externally of the housing 44. As is known in the art, the IR receiver 40 may include a cover 48 to protect the IR receiver 40, with the cover 48 being IR signal transmissive to allow IR signals to pass therethrough. Preferably, the IR receiver 40 is exposed downwardly from the housing 44 to be visible with line-of-sight from below the node 16 with the node 16 being installed in an associated light fixture 12, as shown in Figure 6C. In a preferred arrangement, as shown in Figure 6B, the jack or plug 46 is located on a side of the housing 44 opposite from the IR receiver 40.

[0061] As shown in Figure 7, the nodes 16 may each include a computing processing unit (CPU) 50 with an associated non-transitory memory 52 for storing data, setting profiles, firmware, and so forth. The nodes 16 each also include a RF receiver 54. At a minimum, each of the nodes 16 must receive IR and RF signals. The nodes 16 may be also configured to transmit IR and / or RF communications. Thus, it is possible to provide each of the nodes 16 with an IR transmitter 56 and / or an RF transmitter 58. The IR transmitter 56 and the IR receiver 40 may be separate components or provided as a single component, e.g., as a transceiver.Likewise, the RF transmitter 58 and the RF receiver 54 may be separate components or provided as a single component, e.g., as a transceiver. The node CPU 50 is electrically connected to the IR transmitter 56 / IR receiver 40 and the RF transmitter 58 / RF receiver 54 to encode and decode IR and RF signals as needed. A power supply 51 may be optionally provided, particularly where power is not supplied to the node 16 by the associated light fixture 12. The power supply may be in any form, as discussed above in connection with the power supply 32 of the remote control 14.

[0062] The RF -transmitting capability of the nodes 16 allows for both two-way communication with the remote control 14 and also to act as a repeater for received RF updates, which may be an upgrade or downgrade or other amendment (e.g., a firmware update), and / or as a repeater for further broadcasting of data resulting from sensor detection (e.g., motion sensor detection (occupancy, vacancy)). For example, one of the nodes 16 may be configured to act as a repeater to extend the broadcast coverage of a transmitted update or sensor data. As a repeater, the node 16 would broadcast, as a RF communication using the RF transmitter 58, a RF communication received by the node 16 without any changes to the received RF communication. Caution should be taken in not overly utilizing repeaters. Excessive usage of repeaters may result in signal flooding, resulting in false triggers or improper performance. Repeater usage is best used where extended coverage is needed, particularly due to unusual floor plans (e.g., a L-shaped corridor) or expansive spaces.

[0063] The nodes 16, whether factory installed or field installed, are electrically coupled with control elements of the associated light fixture 12, as schematically represented by two-way arrow 53 in Figure 7. This allows for the nodes 12 to control light output of the associated light fixtures 12. For example, the nodes 16 may control on / off switches on the associated light fixtures 12 to allow the nodes 16 to turn on or off the associated light fixtures 12. The nodes 16 may also control dimming of the associated light fixtures 12. Thus, as discussed below, settings for the light fixture 12 may be uploaded to the associated node 16 which will control the light output of the associated light fixture 12 based on the uploaded settings. With factory installation of the nodes 16, the nodes 16 may be hardwired connected to the control elements of the associated light fixture 12. Separately, with field installation, the field installation may be configured to electrically couple the nodes 16 with the control elements ofthe associated light fixture 12, for example, through a connection formed between the jack or plug 46 of the node 16 and the port or jack 42 of the associated light fixture 12

[0064] One or more sensors 60 may be provided with the light fixtures 12 and / or the nodes 16, as shown in Figures 1 and 7. For example, a motion sensor 60A (e.g., a passive infrared sensor (PIR) sensor) may be provided on a light fixture 12 and / or the associated node 16 to detect motion in a monitored area. The node 16 is electrically coupled to receive output from the motion sensor 60A whether directly (where the motion sensor 60A directly transmits output to the node 16) or indirectly (where the output from the motion sensor 60A is transmitted to a component of the light fixture 12 which in turn transmits the output to the node 16). The node 16 is configured to evaluate the output from the motion sensor 60A, based on the stored settings for the light fixture 12, in determining whether to turn the light fixture 12 on or off in response to detected motion or lack of motion. The motion sensor 60A and / or the node 16 may be provided with a clock, timer, or other time measuring device to measure time lapse in vacancy as is known in the art.

[0065] Similarly, a photosensor 60B (e.g., daylight sensor) may be provided on a light fixture 12 and / or the associated node 16 to detect the level of prevailing light in a monitored area. The node 16 is coupled to receive output from the photosensor 60B whether directly (where the photosensor 60B directly transmits output to the node 16) or indirectly (where the output from the photosensor 60B is transmitted to a component of the light fixture 12 which in turn transmits the output to the node 16). The node 16 is configured to evaluate the output from the photosensor 60B, based on the stored settings for the light fixture 12, in determining whether to turn the light fixture on or off in response to the detected prevailing level of light.

[0066] As shown in Figure 7, with the sensor 60 being located on one or more of the nodes 16, the sensor 16 may be covered by cover 48. The cover 48 may cover all sensors 60 all communication elements (both IR and RF). The sensor(s) 60 located on any of the light fixture(s) 12 or as stand-along may be also provided with protective covering, as is well-known in the art.

[0067] As discussed below, the light fixtures 12 may be grouped to be controlled by a common set of settings. These settings may be responsive to motion or light-level detection. Within agroup, a limited number of the sensors 60 may be provided amongst the associated light fixtures 12. This provides cost savings. In other words, not all light fixtures 12 or nodes 16 need to be provided with a sensor 60. In addition, or alternatively, one or more sensors 60 may be provided separately from the light fixtures 12 / nodes 16 to operate therewith, as shown in Figure 1. For example, one of the sensors 60 may be mounted to a wall or ceiling for detection with the sensor output being transmitted to one or more nodes 16 for processing (e.g., being wirelessly and / or hard-wired transmitted). This allows for retrofitting an area to be controlled by sensors 60 where the light fixtures 12 and / or the nodes 16 were not provided with any sensor 60. With a group configuration, a node 16 may be used to decode sensor readings and broadcast, using RF communication, the resulting commands to the group. In addition, or alternatively, one or more nodes 16 may be used as repeaters to ensure full range broadcasting of sensor related data.

[0068] With reference to Figure 8, a method of creating and managing a group of light fixtures 12 is shown and generally designated by reference numeral 62. The method 62 is useable to select light fixtures 12 in an installation and group them together to be simultaneously controlled by the same settings. In a first step 64 of the method 62, a profile of settings is determined intended the group of light fixtures being created. The profile of settings may be pre-programmed and stored in the memory 26 of the remote control 14. The pre-programmed profile of settings may be factory set in the memory 26 or be user created on an external device and uploaded to the remote control 14 via a data input interface 34. In addition, or alternatively, as shown in Figure 3B, the remote control 14 may be provided with a listing of settings whereby a user may set values to create the profile, which may be stored in the memory 26 of the remote control 14. The settings may include the following user-selected settings: level of trim (light level (may be set as percentage of maximum light output)); brightness level; hold time (time delay of no occupancy where light fixture goes to standby mode); standby dim level (light level with light fixture in standby mode); motion sensor sensitivity detection range (may be set as percentage of maximum field of detection); setting vacancy or occupancy as detection mode for motion sensor; daylight harvesting (maintaining a desired light level through detection of ambient light level and adjustment of light output); daylight threshold (setting dimming level for daylight); ramp up (time to gradually brighten lights to a set value); ramp down (time to gradually fade lights to a set value); and, link (enables group of lights to be synchronized (e.g., same channel or grouping). Additionally, as discussed further below, the profile may includesettings which are selected by the remote control 14 and / or the nodes 16, not selected by the user, such as: channel settings (this allows logical grouping of light fixtures); floor settings (this allows further grouping of light fixtures); radio frequency (specific radio frequency).

[0069] With a profile of settings selected by the user, the profile of settings will be located on the remote control 14. Thereafter, as set forth in a second step 66 of the method 62, a user selects a light fixture 12 intended for the group (i.e., intended for the profile of settings), aims the remote control 14 in the direction of the selected light fixture 12, and activates the remote control 14 to transmit an IR signal in the direction of the selected light fixture 12, wherein the transmitted IR signal contains data packets encoding the profile of settings. In a third step 68 of the method 62, the IR receiver 40 of the node 16 of the selected light fixture 12 receives the transmitted IR signal. The node 16 may be normally in a quiescent (sleep) state, where detection of the transmitted IR signal by the IR receiver 40 may cause the node 16 to selfawaken. The node 16, specifically the node CPU 50, acts to decode the received IR signal to yield the profile of settings and causes the profile of settings to be stored in the memory 52. As shown by flow line 70, the second and third steps 66, 68 may be iteratively repeated to select light fixtures and upload the same profile of settings using IR transmission to create a group, whereby the light fixtures 12 of the group are subject to simultaneous control per the profile of settings.

[0070] Additional groups of light fixtures 12 may be formed using the method 62, but with different profile(s) of settings. The method 62 allows for light fixtures 12 within a common installation to be group together for control purposes. This is advantageous in larger settings, such as school buildings, office buildings, warehouses, terminals, and so forth, where spaces of different occupancy and utilization are present best-suited for customized light control.

[0071] As discussed above, the transmission of IR signals to selected light fixtures 12 requires line-of-sight communication. This assists in targeting selected light fixtures 12. Additionally, as an optional fourth step 72, the node 16 may be configured to cause the associated light fixture 12 to flash its lighting elements one or more times to confirm receipt of the transmitted IR signal. This provides visual confirmation to the user of successful upload.

[0072] As an alternative or additional mode of confirmation of successful upload, as shown in optional fifth step 74, the remote control 14 may be configured to transmit a read request to the selected light fixture 12. In response to the read request, the node 16 is configured to transmit a validation IR signal which contains one or more data packets encoding settings currently saved in the memory 26 of the node 16 associated with the selected light fixture 12. The remote control 14 is configured to receive the validation IR signal, decode the validation IR signal, and display the settings on the display screen 20 of the settings currently saved in the memory 26 of the node 16 associated with the selected light fixture 12 based on the decoding of the validation IR signal. This allows the user to confirm whether the settings saved in connection with the selected light fixture 12 match those of the uploaded profile of settings.

[0073] As shown in Figure 8 by flow line 71, in the event of an unsuccessful upload of the profile settings, a user may re-initiate the second step 66 to once again transmit an IR signal containing data packets encoding the profile of settings, with subsequent confirmation of successful upload. This sub-process may be repeated. With a lack of success, troubleshooting may be required in checking the working state of the remote control 14 and the node 16 of the selected light fixture 12.

[0074] The subject invention also allows for RF transmission by the remote control 14 of data, instructions, settings and so forth to the light fixtures 12. The remote control 14 may transmit data, settings, firmware, and so forth, to alter stored settings and / or update (e.g., upgrade or downgrade) firmware of the nodes 16, as represented by sixth step 75 in Figure 8. Significantly, the RF transmission is not line-of-sight communication, as is IR communication. As a result, the RF transmission is not required to be aimed at, or otherwise directed, to selected light fixture(s) 12. The RF transmission may be used indiscriminately to broadcast settings / firmware updates across the light fixtures 12, regardless of any grouping. The RF receivers 54 of the nodes 16 receive any RF transmitted updates with the node CPU 50 of each of the nodes 16 decoding the updates and storing the updates on the associated memory 52.

[0075] As represented by box 77 in Figure 8, the profile settings may include one or more identifiers to identify a light fixture 12 or group of light fixtures 12, the identified s) being stored on in the memory 52 of each of the nodes 16 along with the rest of the stored settings. For example, a channel may be assigned to a light fixture 12 or group of light fixtures 12. Inthis manner, multiple light fixtures 12 or groups of light fixtures 12 may be assigned different channels for distinction. In this manner, the remote control 14 may broadcast, using RF communication, an update, with the update including the channel(s) designated for the update. This way specific light fixture(s) 12 or group(s) of light fixture(s) 12 may be updated. The use of identifiers, such as channel(s), in the broadcasted RF communication allows for discriminate communication. In contrast, the RF communication may be indiscriminately broadcast where the RF communication is intended for the entire installation with no channel or other identifier being specified.

[0076] The channel identifier also may be used within a group to facilitate simultaneous control. For example, as discussed above, where output of a sensor 60 is detected within, or external to, a group of light fixtures 12, a control signal may be broadcast by RF communication with the channel of the relevant group being included. This allows for the light fixtures 12 assigned to the specified channel to simultaneously react to the broadcast RF communication. For example, a motion sensor 60 A may detect motion in a monitored area thereby calling for activation of light fixture(12) for that area. A single motion sensor 60 A may provide the detection with a control signal being broadcast with the associated channel identifier to activate the light fixture(s) 12 of the associated channel.

[0077] For large installations, particularly multi-floor installations, secondary identifiers may be used such as a floor or zone identifier. In this manner, light fixture(s) 12 may be grouped logically by area, space, utilization, and so forth. For example, a light fixture 12 or group of light fixtures 12 may be identified by two alphanumeric characters representing an assigned floor and channel, such as Al, A2, Bl, B2... where the first character may represent a floor, and the second character may represent a channel on that floor, with broadcasted RF signals containing the full identifier of target light fixture(s) 12 or group(s) of light fixture(s) 12. The system may be programmed with any number of alphanumeric characters to allow for scalable range in assigning separate floors and channels. For example, eight (8) floors (A, B, C, D, E, F, G, H) and fifty (50) channels (1-50) may be utilized providing for 400 combinations. As appreciated by those skilled in the art, other combinations may be utilized, including using a third, or further, alphanumeric character. This allows for targeted control over various sized areas. With the channel / secondary identifier being encoded in the broadcasted RF signal, anyre-broadcast of the RF signal by a node 16 acting as a repeater would also include the channel / secondary identifier.

[0078] As will be appreciated by those skilled in the art, the order of assigning channels and floors / zones may be altered, e.g., having zones / floors assigned first, with channels subsequently assigned. This allows for first assigning by an area or zone (e.g., a floor) and then assigning channels within that area or zone. For example, a floor may be assigned to a group of light fixtures with a sub-group of the light fixtures being assigned to a specific channel. Depending on circumstances, it may be preferred to assign channels first with subsequent assignment of an area or zone.

[0079] A plurality of profiles of settings may be stored in the memory 26 of the remote control 14, retrievable by an identifier, such as a profile identifier (e.g., Profile 1, Profile 2, etc.), and / or a channel / secondary identifier (e.g., Al, B2, etc.). In this manner, a stored profile may be retrieved from memory and used to update a selected light fixture 12, e.g., to associate that light fixture 12 with a group (identified by the channel / secondary identifier). Alternatively, the remote control 14 may retrieve a profile of settings from a light fixture 12, as described above by transmitting a read request. The retrieved profile of settings may then be uploaded to additional light fixture(s) 12 using the method 62. The retrieved profile of settings may be also stored in the memory 26 for later retrieval.

[0080] As represented by box 79 in Figure 8, to minimize RF interference between light fixture(s) 12 and group(s) of light fixture(s) 12, specific RF frequencies may be assigned to light fixture(s) 12 or group(s) of light fixture(s) 12, with the specific RF frequencies being stored with the profile(s) of settings for the light fixture(s) 12. The RF transmitter(s) 56 / RF receiver(s) 58 of the node(s) 16 of the associated light fixture(s) 12 are adjusted to operate at the assigned specific RF frequency. This results in light fixture(s) 12 operating at differing, specific frequencies, thereby minimizing RF crosstalk. ISM (Industrial, Scientific, and Medical) RF frequency bands are commonly used for industrial applications. The ISM bands cover a RF frequency band of 902 MHz - 928 MHz, which is anticipated for use with the subject invention. In typical RF settings, a RF frequency within the noted band is selected as an operating frequency and used throughout the system. With the subject invention, the frequency band is incrementally divided to provide different operating frequencies. It ispreferred to divide the frequency band by .25 MHz increments, such that with a band of 902 -928 MHz, 104 operating frequencies are yielded (902.0, 902.25, 902.5, . . . 927.5, 927.75, 928.0). Other increments are possible.

[0081] The operating frequency may be assigned to a particular channel / secondary identifier manually or by the remote control 14, with the operating frequency being provided in the profile of settings. The CPU 24 of the remote control 14 may be configured to tabulate and assign operating radio frequencies. The node CPUs 50 may be configured to adjust the operating frequency of the related RF transmitters 58 / RF receivers 54 to operate at the assigned operating RF frequency.

[0082] Moreover, it is preferred that distinguishable operating frequencies be assigned to adjacent or closely-located light fixture(s) 12 or group(s) of light fixture(s). Due to the difference in operating frequencies, cross-talk between nearby light fixtures 12 may be minimized. For example, a first group of light fixtures 12 may be assigned an operating frequency of 910.0 MHz, while an adjacent group of light fixtures 12 may be assigned an operating frequency in the range of 902.0 - 904.0 or 916.0 - 928.0. It is preferred that a difference of at least 6.0 MHz be provided between operating frequencies of adjacent light fixture(s) 12 or group(s) of light fixture(s) 12, more preferably a difference of at least 5.5 MHz, more preferably a difference of at least 5.0 MHz, more preferably a difference of at least 4.5 MHz, more preferably a difference of at least 4.0 MHz, more preferably a difference of at least 3.5 MHz, more preferably a difference of at least 3.0 MHz, more preferably a difference of at least 2.5 MHz, more preferably a difference of at least 2.0 MHz, more preferably a difference of at least 1.5 MHz, more preferably a difference of at least 1.0 MHz, more preferably a difference of at least .5 MHz, and, more preferably a difference of at least .25 MHz. The adjustability of operating frequencies allows for avoidance of signal confusion with devices external to the system, such as RFID remotes, radios, and so forth.

[0083] The subject invention also allows for the pairing of light fixture(s) 12 with external controls, such as wall light switches. The wall light switches may be paired with light fixture(s) 12 to provide control, independent of any hard wiring connections. With typical wall light switches, the switches are wired to adjust power (e.g., turn on or off; dim / brighten) to light fixtures on an associated circuit. In contrast, the subject invention uses RF communication toallow wall light switches to control light fixture(s) 12 independent of wiring. Particularly configured wall light switches are needed for the subject invention. As shown in Figure 9, an exemplary wall light switch 76 is shown having a first switch element 78 and a second switch element 80. In addition, as shown in Figure 10, the wall light switch 76 includes a computer processing unit (CPU) 82, a non-transitory memory 84, an RF transmitter 86, an RF receiver 88, and a power supply 92. Optionally, an IR receiver 94, and possibly IR transmitter 96, may be also provided with the wall light switch 76. The RF transmitter 86 and the RF receiver 88 may be provided as a single transceiver. Likewise, the IR receiver 94 and IR transmitter 96 may be provided as a single transceiver. The CPU 82 is electrically connected to the RF transmitter 86 / RF receiver 88 and the IR receiver 94 / IR transmitter 96 to encode and decode RF signals and IR signals, as needed.

[0084] The first switch element 78 may be provided as a user interface for controlling paired light fixture(s) 12. For example, the first switch element 78 may be configured as any two-position, adjustable switch for turning on or off paired light fixture(s) 12, such as being in the form of a toggle, lever, button, slide, touch pad, and so forth. The first switch element 78 may be provided with additional positions for additional control (allowing for different light intensities (such as three-position, four-position...)) and / or dimming capabilities. The second switch element 80 may be provided as a user interface to facilitate pairing with light fixture(s) 12. In particular, the second switch element 80 may be configured as any two-position, adjustable switch for placing the wall light switch 76 into a pairing mode, such as being in the form of a toggle, lever, button, slide, touch pad, and so forth. By way of non-limiting example, for pairing, the second switch element 80 may have a first switch position corresponding to an inactive state of the wall light switch 76 where the wall light switch 76 is not in a pairing mode. The second switch element 80 may be adjustable to a second switch position which activates the pairing mode of the wall light switch 76. The second switch element 80 may be spring biased to the first switch position. To avoid the wall light switch 76 from inadvertently entering the pairing mode, the second switch element 80 may be required to be placed in the second switch position for a minimum duration (e.g., five (5) seconds) to best ensure intentional activation of the pairing mode. With normal spring biasing to the first switch position, the second switch element 80 may be required to be held in the second switch position for the minimum duration to achieve the pairing mode. As a further failsafe, simultaneous adjustment of the first and second switch elements 78, 80 may be required to activate the pairing mode,e.g., both being required to be adjusted to particular states (e.g., both being depressed on upper portions). A minimum duration may be also required with both the first and second switch elements 78, 80 being held in the particular states to achieve the pairing mode. The first switch element 78 may be also spring-biased to be biased away from the position necessary for pairing. It is preferred that the first and second switch elements 78, 80 be spring-biased away from the particular states needed to achieve the pairing mode, such that the biasing must be overcome to achieve the pairing mode. Holding the first and second switch elements 78, 80 in the particular states for pairing for a minimum duration (e.g., five (5) seconds) against the biasing forces is preferred to achieve the pairing mode. In a preferred arrangement, as shown in Figure 9, the first and second switch elements 78, 80 are provided as two-position toggle switches with the pairing mode being activated with both switch elements 78, 80 being simultaneously pressed into the same state (e.g., both being pressed in an upper portion as shown schematically by the two representations of a finger) for a minimum duration, such as five (5) seconds. The CPU 82 may be provided with a clock, timer, or other time measuring device to determine if a minimum duration has been exceeded.

[0085] The wall light switch 76 may be provided with an indicator light 90 which is useable to indicate that the wall light switch 76 is in the pairing mode. For example, the indicator light 90 may be normally off and turned on to indicate an active pairing mode. Alternatively, the indicator light 90 may change colors to indicate an active pairing mode, e.g., being red to indicate no pairing mode and being green to indicate active pairing mode.

[0086] The light fixture(s) 12 may be paired with the wall light switch 76 in one of two ways, as shown by flowchart 100 in Figure 11. With the pairing mode being activated (box 102), the wall light switch 76 enters a listening mode preferably awaiting receipt of an IR signal by the IR receiver 94. Alternatively, the wall light switch 76 may be in the listening mode awaiting receipt of a RF signal by the RF receiver 88. In a first approach (box 104), the remote control 14 may be used to select identifier(s) of light fixture(s) 12 intended for pairing and transmitting the selected identifier(s), preferably using IR communication, to the IR receiver 94. For example, using the remote control 14, a user may select a particular channel / secondary identifier for pairing with the wall light switch 76 with that particular channel / secondary identifier being transmitted to the IR receiver 94. The CPU 82 of the wall light switch 76 may decode the received IR transmission to read and store the particular channel / secondaryindentifier. The pairing mode may end with receipt of the transmission or set to time out having a fixed duration from initial activation (e.g., one minute) (box 106). This may operate in similar fashion but with use of an RF signal, rather than IR signal, being received by the RF receiver 88.

[0087] Advantageously, the remote control 14 may be configured to have one of the user interfaces 22 be a command to transmit the selected identifier(s), such as a pressable button marked with the command “Switch” (see Figure 2). In use, a user may select, on the remote control 14, the identified s) intended for pairing with the wall light switch 76. Once selected, the user interface 22 is engaged (e.g., the “Switch” button is depressed) resulting in the IR communication being transmitted to the wall light switch 76. With this configuration, a single user interaction may be used for pairing.

[0088] IR communication is generally line-of-sight communication. With a wall light switch, it is possible to bring the remote control 14 into close proximity. As such, the IR receiver 94 may not be required to be externally visible from outside the wall light switch 76. To facilitate better IR signal reception, the IR receiver 94 may be configured to be visible from outside the wall light switch 76.

[0089] As an alternative approach to pairing, with the wall light switch 76 being in a listening mode, the remote control 14 may be used to send a control signal to a selected light fixture 12, using IR communication, to initiate pairing of that light fixture 12 with the switch 76 (box 108). In similar fashion as discussed above, the remote control 14 may be configured to have one of the user interfaces 22 be a command to initiate pairing, such as a pressable button marked with the command “Switch”. Engagement of the user interface 22 may result in the IR communication being transmitted to the light fixture 12 to initiate pairing.

[0090] In response to receiving the control signal, the node 16 associated with the selected light fixture 12 causes a pairing RF signal to be transmitted, which includes encoded pairing data (box 110). The RF receiver 88 of the wall light switch 76, being in a listening mode, receives the pairing RF signal. Upon receiving the pairing radio signal, the wall light switch 76, particularly the CPU 82, decodes the pairing data and saves the pairing data. The saved pairing data enables the wall light switch 76 to control the selected light fixture 12 using radiosignals. Preferably, the pairing data includes an identifier of the selected light fixture 12, such as a channel / secondary identifier associated with the selected light fixture 12. This approach may be also used to pair an entire group of light fixtures 12 with the wall light switch 76, particularly where the group is associated with the saved channel / secondary identifier. Thus, a RF transmission from a single selected light fixture 12 may be used to pair an entire group of light fixtures 12 with the wall light switch 76. The pairing mode may end with receipt of the transmission or set to time out having a fixed duration from initial activation (e.g., one minute) (box 112).

[0091] In use, with actuation of the first switch element 78, the wall light switch 76 broadcasts a RF control signal, which contains the identifier of the paired light fixture(s) 12, e.g., the stored channel / secondary identifier, and a control signal, instructing how the associated light fixture(s) 12 should be adjusted. The RF receivers 54 of the nodes 16 will indiscriminately receive the broadcasted RF control signal. The received RF control signal will be decoded by the node CPUs 50 which will determine whether the RF control signal is relevant to that light fixture 12 based on the particular channel / secondary identifier. If relevant, the node CPU 50 will act in accordance with the control signal and adjust the associated light fixture 12 (e.g., turning off the light fixture 12). In not relevant, the received RF control signal will be ignored. The light fixtures 12 of the particular channel / secondary identifier will simultaneously receive the RF control signal and simultaneously react thereto. In this manner, the light fixtures 12 are controlled by radio signals rather than hard-wired switches.

[0092] As will appreciated by those skilled in the art, the subject invention allows for scalable and versatile control over a light fixture or group of light fixtures. It is noted that the remote control 14 may be used for manual control of any of light fixture(s), independent of any stored settings. The use of IR and RF technologies allows for good selection of individual light fixtures for commissioning purposes, but also the convenience of broad distribution of updates, not requiring individual upload.

Claims

AMENDED CLAIMSreceived by the International Bureau on 27 June 2026 (27.06.2026) WHAT IS CLAIMED IS:

1. A method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures, each of the light fixtures having a node associated therewith, the method comprising:forming a first group of the light fixtures by:i. determining a first profile of settings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control;ii. aiming the remote control generally in the direction of a selected light fixture of the installed lights fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infrared signal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings; iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and,iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures,wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control per the first profile of settings;providing a firmware update to the remote control; and,transmitting, by the remote control, the firmware update simultaneously to the nodes of at least a portion of the installed light fixtures using radio frequency transmission, including transmitting indiscriminately the firmware update to at least a portion of the first group of the light fixtures and to installed light fixtures outside of the first group of the light fixtures.

2. The method of claim 1, further comprising flashing lighting elements associated with the selected light fixture in response to receiving the transmitted infrared signal.

3. The method of claim 2, further comprising, in response to a read request transmitted by the remote control, transmitting a validation infrared signal by the node associated with the selected light fixture, the validation infrared signal containing one or more data packets encoding settings currently saved in the non-transitory memory of the node associated with the selected light fixture, the remote control being configured to receive the validation infrared signal, decode the validation infrared signal, and display the settings currently saved in the non-transitory memory of the node associated with the selected light fixture based on the decoding of the validation infrared signal.

4. The method of claim 1, further comprising, in response to a read request transmitted by the remote control, transmitting a validation infrared signal by the node associated with the selected light fixture, the validation infrared signal containing one or more data packets encoding settings currently saved in the non-transitory memory of the node associated with the selected light fixture, the remote control being configured to receive the validation infrared signal, decode the validation infrared signal, and display the settings currently saved in the non-transitory memory of the node associated with the selected light fixture based on the decoding of the validation infrared signal.

5. The method of claim 4, wherein the node associated with the selected light fixture includes a transceiver for receiving and transmitting infrared signals.

6. The method of claim 5, wherein the remote control includes a transceiver for receiving and transmitting infrared signals.

7. The method of claim 1, wherein the first profile of settings includes a specified operating radio frequency, and, wherein a radio receiver or transceiver associated with the node associated with the selected light fixture is set to receive and transmit radio signals at the specified operating radio frequency.

8. The method of claim 1, further comprising pairing the selected light fixture with a wall light switch by:providing the wall light switch which includes at least one manually activated switch, a radio transmitter, and a radio receiver;placing the wall light switch into a listening state where the radio receiver is in a state to receive radio signals;transmitting, by the remote control, a control signal to the node associated with the selected light fixture to pair with a switch;in response to receiving the control signal, the node associated with the selected light fixture causes a pairing radio signal to be transmitted, the pairing radio signal containing encoded pairing data;upon receiving the pairing radio signal, the wall light switch decodes the pairing data and saves the pairing data, whereby the saved pairing data enables the wall light switch to control the selected light fixture using radio signals.

9. The method of claim 8, wherein the selected light fixture includes a light control switch.

10. The method of claim 9, wherein the node associated with the selected light fixture is configured to receive the radio signals transmitted by the wall light switch, decode the received radio signals, and control the light control switch in response to the received radio signals.

11. The method of claim 8, wherein the pairing radio signal includes at least one identifier which identifies the group of light fixtures such that the group of light fixtures is simultaneously paired with the wall light switch to be controlled thereby.

12. The method of claim 8, wherein the radio transmitter and the radio receiver are provided as transceiver.

13. The method of claim 1, comprising pairing the selected light fixture with a wall light switch by:providing the wall light switch which includes at least one manually activated switch, a radio transmitter, and an infrared receiver;placing the wall light switch into a listening state where the infrared receiver is in a state to receive infrared signals;transmitting, by the remote control, an infrared control signal to the infrared receiver of the light wall switch, the infrared control signal containing data packets encoding at least one identifier of the group of light fixtures; and,receiving the transmitted infrared control signal by the infrared receiver of the light wall switch, the received infrared control signal being decoded by the light wall switch to yield the at least one identifier of the group of light fixtures, the at least one identifier of the group of light fixtures being saved in a non-transitory memory of the wall light switch, whereby the saved at least one identifier of the group of light fixtures enables the wall light switch to control the light fixtures of the group of light fixtures using radio signals encoded with the at least one identifier of the group of light fixtures..

14. The method of claim 1, wherein the first profile of settings includes an assigned channel.

15. The method of claim 14, wherein the first profile of settings includes an assigned zone.

16. The method of claim 15, wherein the assigned zone corresponds to a floor of a building on which the installed light fixtures are located.

17. The method of claim 1, wherein the node associated with a first of the installed light fixtures which receives the firmware update is configured as a repeater to broadcast the received firmware update.

18. A method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures, each of the light fixtures having a node associated therewith, the method comprising:forming a first group of the light fixtures by:i. determining a first profile of settings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control;ii. aiming the remote control generally in the direction of a selected light fixture of the installed lights fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infrared signal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings;iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and,iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures,wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control per the first profile of settings;wherein, the first profile of settings includes an identifier assigned to each of the light fixtures of the first group of the light fixtures so that all of the light fixtures of the first group of the light fixtures are responsive to control radio frequency transmissions in which the identifier is encoded.

19. The method of claim 18, wherein the identifier includes an assigned zone.

20. The method of claim 19, wherein the assigned zone corresponds to a floor of a building on which the installed light fixtures are located.

21. The method of claim 20, wherein the identifier includes an assigned channel.

22. A method of managing a plurality of installed light fixtures and of creating and controlling groups of light fixtures within the installed light fixtures, each of the light fixtures having a node associated therewith, the method comprising:forming a first group of the light fixtures by:i. determining a first profile of settings for the first group of the light fixtures, the first profile of settings being stored in a non-transitory memory of a remote control;ii. aiming the remote control generally in the direction of a selected light fixture of the installed lights fixtures to be associated with the first group of the light fixtures and activating the remote control to transmit an infraredsignal in the direction of the selected light fixture, wherein the transmitted infrared signal contains data packets encoding the first profile of settings; iii. receiving the transmitted infrared signal by the node associated with the selected light fixture, the received infrared signal being decoded by the node associated with the selected light fixture to yield the first profile of settings, the first profile of settings being saved in a non-transitory memory of the node associated with the selected light fixture; and,iv. iteratively repeating steps ii. and iii. to form the first group of the light fixtures,wherein, with the first group of the light fixtures formed, the light fixtures of the first group of the light fixtures are subject to simultaneous control per the first profile of settings;wherein, the first profile of settings includes a specified operating radio frequency, and, wherein a radio receiver or transceiver associated with the node associated with the selected light fixture is set to receive and transmit radio signals at the specified operating radio frequency.,wherein the specified operating radio frequency is at least .25 MHz different from an operating radio frequency of an adjacent light fixture or group of light fixtures within the plurality of installed light fixtures.

23. (Cancelled)

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