A scalable DC power distribution and control system suitable for commercial buildings includes one or more power and control hubs. Each DC power and control power hub provides power and control for any suitable distributed DC loads such as light-fixtures. AC power from the electric utility is applied to the power and control hub and is converted to DC power for distribution to DC loads within the space using low-voltage cables.

A method of demodulating a signal packet includes steps of: determining whether a pulse width of each of pulses of one of bits of the signal packet is associated with bit 0 or bit 1; updating first counting data associated with a number of the pulses that define bit 0, and determining whether the first counting data is greater than a first threshold value; deciding that said one of the bits of the signal packet is a bit 0; updating second counting data associated with a number of the pulses that define bit 1, and determining whether the second counting data is greater than the second threshold value; deciding that said one of the bits of the signal packet is a bit 1.

A modular wireless lighting control device includes a wireless interface device that includes a wireless transceiver, a first controller, and a power supply. The wireless transceiver is in electrical communication with the first controller. The wireless interface device receives lighting control instructions wirelessly via the wireless transceiver. The modular wireless lighting control device further includes a lighting control device in electrical communication with the wireless communication device. The lighting control device includes a second controller and control interface circuitry. The control interface circuitry is compatible with a light fixture.

A lamp control system includes at least one first lamp network, at least one second lamp network and a lamp control gateway. The first lamp network is configured to emit light and to transmit a first message, and includes a first physical layer. The second lamp network is configured to emit light and to transmit a first message, and includes a second physical layer different from the first physical layer. The lamp control gateway includes a processing module that is configured to receive the first message and the second message and to convert the first message and the second message in such a way that a first converted message and a second converted message comply with a predefined protocol.

A module (1) for a luminaire (2) has one or more sensing means (11) and at least one of: a visual information output means (12), and a mechanical input means (13) configured for being actuated by a human operator. The module (1) is insertable into an opening (231) of a casing (23) of the luminaire (2) such that the sensing means (11) is/are exposed to an exterior of the luminaire (2). Especially in connection with luminaires (2) for emergency lighting, which are required by law in every building, this provides a dense grid of environmental sensors (11) without requiring extra wiring or gateways to work, reduces the number of elements deployed in the building to get environmental data, simplifies integration and commissioning, and decreases installation costs with reference to separate sensor networks.

A Digital Addressable Lighting Interface, DALI, enabled communication device for transmitting messages over a communication bus having two communication lines, said device comprising a switch connected between said two communication lines, a controller arranged for controlling said switch for imposing logical communication levels on said communication bus, an energy storage device, connected in series with said switch, and arranged for storing electrical energy flowing from said bus through said switch, a bypass circuit arranged for bypassing said energy storage device when a voltage over said energy storage device is above a predetermined voltage threshold.

Systems and methods for controlling a light emitting diode (LED) system having a plurality of LED arrays are provided. The lighting system can include a dimmable LED driver circuit configured to provide a driver output suitable for providing a driver current to the LED arrays. A current splitter circuit can be provided between the LED driver circuit and the plurality of LED arrays to control the ratio of current from the driver output provided to each of the plurality of LED arrays. The current splitter circuit can be configured to control the current ratio provided to the plurality of LED arrays independently of the driver output according to a current ratio control curve based at least in part on a variable reference signal provided at the current splitter circuit.

Systems and methods for controlling a light emitting diode (LED) system having a plurality of LED arrays are provided. The lighting system can include a dimmable LED driver circuit configured to provide a driver output suitable for providing a driver current to the LED arrays. A current splitter circuit can be provided between the LED driver circuit and the plurality of LED arrays to control the ratio of current from the driver output provided to each of the plurality of LED arrays. The current splitter circuit can be configured to control the current ratio provided to the plurality of LED arrays independently of the driver output according to a current ratio control curve based at least in part on a variable reference signal provided at the current splitter circuit.

An electronic 2-way communication module suitable for 2-way communication with a luminaire is disclosed. The module may be installed into the power supply to the luminaire, and includes a housing assembly, live and neutral power input terminals, live and neutral power output terminals, a power supply unit, a dimmer unit controller, a wireless communication interface adapted to receive data/operating instructions and to relay data to a remote repository, and a wired connection between the electronic 2-way communication module and the luminaire. The wired connection may provide the 2-way transmission of data between the module and the luminaire and vice versa.

A modular wireless lighting control device includes a wireless interface device that includes a wireless transceiver, a first controller, and a power supply. The wireless transceiver is in electrical communication with the first controller. The wireless interface device receives lighting control instructions wirelessly via the wireless transceiver. The modular wireless lighting control device further includes a lighting control device in electrical communication with the wireless communication device. The lighting control device includes a second controller and control interface circuitry. The control interface circuitry is compatible with a light fixture.