Abstract: The invention relates to a DC power distribution system (1) comprising a power supply (50) for supplying DC power to an electrical device (11) like a luminaire, wherein the system includes a connection device (4) comprising a connection device contact (5) to which an electrical device contact (19) of the electrical device is to be connected, a load presence detection unit (7) for detecting whether the electrical device contact has been connected, and a power providing control unit (6) for providing the DC power of the DC power distribution system to the connection device contact, only if the load presence detection unit has detected that the electrical device contact of the electrical device has been connected to the connection device contact. Thus, a voltage is not applied to the connection device contact, if the electrical device is not connected, thereby reducing corrosion effects and the likelihood of installers getting electrified.

Abstract: The invention relates to a DC power distribution system for distributing DC power to one or several electrical devices. The system comprises an electrical device (2) for receiving DC power via an electrical conductor (4) from a power supply device (3) with a power supply control unit (5) and for transmitting a signal to the power supply control unit for requesting a lower power or a higher power. The power supply device is operable in a high power mode and in a low power mode, wherein the power supply control unit controls the power mode of the power supply device depending on the received signal. This allows adapting the power supply to the power, which is actually really needed in the DC power distribution system, in a technically relatively simple way. Particularly standby situations can be handled more efficiently.

Abstract: The invention relates to the integration of an energy function into a light management system, particularly for saving energy and monitoring energy consumption. According to an embodiment of the invention, a light management system (10) with an integrated energy function is provided, wherein the system is adapted to receiving energy information about light fixtures (12-16) of a lighting system (18), and to processing the received energy information with regard to energy consumption of the lighting system (18). The energy function may be for example used to automatically configure a lighting system to low energy consumption, to allow further configurations of the lighting system with regard to lowering energy consumption, or to provide a user with a sensible set of lights that can be turned off and will amount to significant energy savings when turned off.

Abstract: The present invention provides a support system for supporting the commissioning of a networked power distribution system (1). The networked power distribution system comprises at least one power supply (2) with one or more power connectors (12, 12a) for supplying power to the one or more power connectors and a data communication interface for exchanging communication data. The support system (6) comprises one or more load device detectors (7) for detecting the connecting and/or disconnecting of a load device (3a) to/from a power connector (12a), and a commissioning tool (8) for performing steps of commissioning the networked power distribution system with regard to the load device. The commissioning tool is adapted to automatically perform at least some of the commissioning steps in response to the detection of the connecting and/or disconnecting of the load device. This can allow for a relatively easy commissioning of the networked power distribution system.

Abstract: A method, computer program product and device for generating a power signal are provided. In a power distribution system (e.g. PoE), a device (2) (e.g. PD) comprising at least one capacitor (e.g. bulk capacitor) parallel to a load (26) of the device, is powered by a power supply (1) (e.g. PSE). The power supply (1) is arranged for powering the device (2) when at least a minimum current (e.g. MPS) is drawn by the device (2) from the power supply (1). The device (2) determines, by measuring the voltage over the at least one capacitor, whether the current is drawn (partially) from the at least one capacitor. In which case the device (2) is controlled to draw current such that at least a minimum current is drawn from the power supply (1) and the power supply (1) remains powering the device (2).

Abstract: The invention relates to a DC power distribution system (1), especially to an EMerge DC power distribution system, for distributing DC power. A power supply (5) supplies DC power to a track (2) to which an electrical load (9, 10) is attached. A communication device (11) is attached to the track (2), which a) wirelessly receives communication signals and transmits the received communication signals via a power line communication provided by the track to the power supply (5) and/or the electrical load (9,), and/or b) receives communication signals via the power line communication from the power supply (5) and/or the electrical load (9, 10) and wirelessly transmits the received communication signals. Thus, a communication setting is provided, which allows for a very simple integration of a control functionality for controlling, for instance, the power supply 10 and/or the electrical load by transmitting control signals via the communication device.

Abstract: The invention relates to an apparatus (1) for powering an electrical consumer (3, 4, 5) via a data connection (6, 7, 8). The apparatus comprises a power supply (2) for supplying power to the electrical consumer via the data connection, a data receiving unit (9) for receiving data to be sent to the electrical consumer, and a controller (10) for activating the supply of power to the electrical consumer via the data connection, if data to be sent to the electrical consumer have been received and the supply of power to the electrical consumer is deactivated. The electrical consumer itself does therefore not need to receive power from the apparatus, in order to stay alert to be able to react on data connection activity, thereby reducing the power consumption.

Abstract: The present invention relates to an adaptive power providing device and a method for adaptively providing power to multiple power receiving devices. A power providing device detects at its plugs or ports power drawn by the power receiving devices and adjusts the related port power budget if the drawn power consistently grows over time, thereby avoiding overpower switch-off.

Abstract: The invention relates to a power providing system (1) comprising a power providing device (2) like a PSE and an electrical device (4) like a PD. In a classification mode in a first phase the power providing device provides one or several voltage pulses and the electrical device draws one or several classification current pulses for indicating the class of the electrical device, wherein in a second phase the power providing device provides one or several voltage pulses for indicating the class of the power providing device. Thus, the indication of the classes of the electrical device and of the power providing device is decoupled in two different phases, which can lead to an improved mutual classification procedure.

Abstract: A lighting system, an identification system and an identification device for a lighting system, wherein the lighting system comprises a plurality of components. The identification device comprises a transmitter adapted to receive an identification request, and a signaling apparatus comprising a control unit and one or more signaling devices, wherein the control unit is adapted to control the one or more signaling devices so that, in response to receipt of the identification request, an identification signal is produced that alerts a human to a location or direction of one or more of the components.

Abstract: A power unbalance mitigating polarity correction circuit is presented comprising a first and a second polarity correction circuit, each comprising: an input for receiving an input current, an output for providing a rectified output current, at least a first current path, for conducting the received current when the received current is of a first polarity, and a second current path, for conducting the received current when the received current is of a second polarity, wherein the first current path comprises a passive rectification component as an asymmetric conductance component of a first type and the second current path comprises an active rectification component as an asymmetric conductance component of a second type different from the first type; the power unbalance mitigating polarity correction circuit further comprising a controller, wherein the controller is arranged for controlling the active rectification component to operate in a power unbalance mitigation mode when the current received by the firs

Abstract: The invention provides a lighting unit (1) comprising a light source (20) and an actuator (40). The light source (20) is arranged to generate, during use, a light beam (B) whose light intensity is dependent upon an electrical power signal (I; V). The actuator (40) is arranged to orient, during use, the light beam (B) in an orientation dependent upon the electrical power signal (I; V). The orientation of the light beam has a pre-determined relationship to the light intensity of the light beam. The invention further relates to a lighting system (100) comprising at least one lighting unit, a space (1000) comprising such a lighting system, and a use of such a lighting system.

Abstract: A lighting system for improving the alertness of a person comprising: one or more light sources (101) arranged to emit light into an environment, at least one of the one or more light sources being arranged with a primary function comprising providing illumination into the environment; and a controller (103) configured to cause at least one of the at least one light sources to provide a secondary function of emitting at least a first light pulse (503) having a duration of between 1 ms and 50 ms, wherein there is an idle period (505) lasting at least 0.1 s on either side of the first light pulse.

Abstract: The invention relates to an interface device for supplying power to a variable number of loads, which are configured to be coupled to the interface device by means of a supply line and which are configured to communicate with the interface device, to a system comprising such interface device and one or more loads, to a corresponding method for supplying power and to a corresponding software product. A particular feature of the present invention is that the interface device functions as an intermediate between an USB power source and the loads connected to the interface device by supplying power while being flexible to both sides, i.e. to the supplying side as well as to the load side, in allowing for a flexible number of loads to be coupled to the interface device (i.e. to be supplied by the interface device with power) and in also providing a negotiation with the power supply depending on the necessary power.

Abstract: The invention relates to a DC power distribution system, especially an EMerge DC power distribution system (1). The system is adapted such that power conductors (3, 4) electrically connected to different groups (5, 6) of ports (14) belong to separate power line communication (PLC) channels, wherein several electrical loads (7 . . . 10; 11 . . . 13) are in power line communication with a group of ports of a same PLC channel. The separation of the different PLC channels allows for a relatively simple determination to which group of ports which electrical loads are electrically connected. This information can be used by, for instance, a user to commission the electrical loads. For example, if the locations of the power conductors, which are electrically connected to certain groups of ports, are known, the information about which electrical loads are connected to which groups of ports can be used for determining the location of the respective electrical load.

Abstract: The invention relates to an apparatus (1) enabled to provide power to a powered device (2) via a wired data link (3). The apparatus (1) is configured to provide the power to the powered device (2) in accordance with a configuration determined based on at least one parameter transmitted by the powered device (2) via the wired data link (3) in a power cycle. Further, the apparatus (1) comprises a memory (12) for storing an information about the configuration and a controller (10) for controlling the apparatus (1) on the basis of the stored information to provide power in accordance with the same configuration to the powered device (12) in a subsequent power cycle after a power outage. Moreover, the invention relates to a method for operating the apparatus (1).

Abstract: The invention relates to powering one or more devices, in particular in the context of Power-over-Ethernet (PoE). In an embodiment of the invention, it is proposed to equip each node (11) with a PD interface (22) that can signal multiples of the standard defined unity load (25 k? with tolerances) during the detection process and increase the load during a sequence of detection attempts. In that way, several nodes (11) can share one PSE outlet and determine the number of neighboring loads (11). At the same time, each node (11) will offer full functionality during “normal” stand-alone wiring. This powering concept can be combined with full or limited data communication capabilities.

Abstract: The invention relates to a DC power distribution system for distributing DC power from a power supply device (3) to an electrical device (2). The power supply device is operable in a high power mode or in a low power mode for supplying a higher power or a lower power, respectively, to the electrical device via an electrical conductor (4), wherein the electrical device is switchable between a high power mode and a low power mode in which the electrical device consumes more power or less power, respectively. An electrical device control unit (11) controls the mode of the electrical device depending on the power supplied by the power supply device. This automatic control of the electrical device depending on the provided power can lead to a better balance between the power consumption and the power supply and, thus, to an improved efficiency of supplying power to the electrical device.

Abstract: The present invention relates to Power-over-Ethernet (PoE) systems. The invention proposes to use a classification event to communicate from the PD (121) to the PSE (110, 910). A sensor (310, 410, 510a, 510b) may determine a sensor value, shut down the PoE connection, and reconnect so that the power up cycle with the PSE (110, 910) will start. The sensor (310, 410, 510a, 510b) provides a PoE resistance related to a class 0, 3 where the class relates to the sensor value (e.g., class 0=presence detected; class 1=no presence detected). This procedure may be repeated (e.g. continuously, every minute or whenever the sensor value changes such that the PSE (110, 910) needs to be informed) and if needed multiple cycles can be used to increase the length of the message communicated.

Abstract: A lighting system, an identification system and an identification device for a lighting system, wherein the lighting system comprises a plurality of components. The identification device comprises a transmitter adapted to receive an identification request, and a signaling apparatus comprising a control unit and one or more signaling devices, wherein the control unit is adapted to control the one or more signaling devices so that, in response to receipt of the identification request, an identification signal is produced that alerts a human to a location or direction of one or more of the components.