Abstract: The present invention proposes to use a power negotiation connection (e.g. the VBUS channel) of a power delivery interface for transmitting or receiving control commands or, respectively, status information to/from a lighting device. The power negotiation connection can be used as a communication channel that is fully independent of the data connection. It uses, for example, different protocols and different wires than the data connection. Control commands, such as dim level or color, can be encoded in a vendor defined message of a related power negotiation protocol.

Abstract: A lighting system and a method for an operating a lighting system, enabling to obtain an identification tag comprised in lighting design data directly from an output beam, i.e. from the emitted light of the at least one lighting unit. It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.

Abstract: A DC-powered lighting device (100) for placement in an external fixture (102) (104), the DC-powered lighting device comprising a lighting unit (110), connector pins (112) configured to mechanically and electrically connect the DC-powered lighting device to the light fixture, a probing unit (118) connected to the connector pins and configured to determine whether electrical power is currently available via the connector pins and to provide a power-present signal indicative of the current availability of electrical power via the connector pins, a DC-power input unit (114) configured to receive DC power from a second external electrical power source, and to deliver the received DC power to the lighting unit and a switching unit (120) configured to allow the delivery of the DC power to the lighting unit in dependence on the power-present signal.

Abstract: The invention relates to a power distribution system comprising a power providing device (3) for providing power and a powered device (4, 5, 6) like a luminaire to be powered by the power providing device. The power providing device and the powered device are operable in a maximum power mode and a normal operation mode, wherein in the maximum power mode the powered device consumes an amount of power maximally consumable by the powered device and the power providing device measures the power consumed by the powered device. This measured power allows for an allocation of an amount of power in the operational mode, which is really maximally needed, wherein it is not necessary to allocate a larger amount of power, which is large enough to consider, for instance, a maximally assumed length of an electrical connection (8) connecting the devices, thereby improving the power budget allocation.

Abstract: Power management (203) for controlling a delivery of a DC-power to a device (204) operable in an accepting operational state or a non-accepting operational state with respect to receiving the DC-power comprises: receiving DC input power; providing an indication that the DC-power supply device (202) operates in a powered-device detection mode and not in an powered-device operation mode; connecting, when the DC-power supply device (202) is in the powered-device detection mode, the power to an energy storage unit (212); storing electrical energy currently received; determining, whether the power-acceptance criterion is fulfilled and, in case it is fulfilled, providing an instruction to operate in the accepting operational state; connecting the energy storage unit (212) and a power interface unit (206) when the external DC-power supply device (202) is currently operating in the powered-device operation mode.

Abstract: The invention relates to a powered device (2) like a luminaire for being used in a power distribution system (100), which is preferentially a PoE system and which comprises a power sourcing device (1) for sourcing a power to the powered device. The powered device comprises an electrical load like an LED and an electrical load power providing unit for generating from the sourced power an electrical load power and for providing the electrical load power to the electrical load, wherein the electrical load power providing unit is adapted to generate the electrical load power with a power level such that an input current drawn by the powered device from the power sourcing device is maximized below a predefined upper input current threshold. This allows increasing the power consumption of the powered device in comparison to the power consumption of powered devices in accordance with the PoE standard IEEE 802.3at.

Abstract: The invention relates to a PoE lighting system (1) comprising an emergency lighting device (4), a first PSE device (6) and a second PSE device (2). The first PSE device is adapted to provide power based on a) first power received from a first power source or b) second power received from a second PSE device via a first fire-resistant PoE connection (3) in case of emergency. The first PSE device is adapted to detect whether power is received from the second PSE device and to provide power to the emergency lighting device based on the second power via a second fire-resistant PoE connection (7), if it has been detected that power has been received from the second PSE device. This can allow for a provision of PoE emergency lighting in case of fire, even if a communication via the fire-resistant PoE connections is not possible anymore.

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 a power splitter for a variable number of loads, a power splitting method for a variable number of loads and a software product for power splitting. It is possible to provide power splitting for a variable number of loads, which allows for an efficient distribution of power while reducing unnecessary overhead, with the determination of an overall power demand for the variable number of loads being concentrated in the power splitter, which may then request the desired amount of power from the power supply.

Abstract: The invention relates to a power distribution system, such as a Power over Ethernet power distribution system. A powered device provides a pulse, such as a Maintain Power Signature, when in standby such that a power providing device remains providing power to it. To increase energy efficiency, the MPS can be cycled (60 ms pulse every 300 ms to 400 ms) according to the IEEE802.3af/at standards. By introducing a controllable switch, for electrically decoupling at least part of the powered device from the power providing device, and a pulse generator, the MPS can be generated in a more energy efficient way and/or can be shortened (e.g. to 5 ms). As an example, the controllable switch can decouple the bulk capacitor of the powered device during MPS generation to prevent the bulk capacitor from filtering out the MPS.

Abstract: The invention relates to a device, system and method for controlling application components in an application control network (300) comprising at least a first network component (110, 180, 301) connected to a first data port of a first data forwarding device (102, 110, 180) of the application control network. A configuration profile for the at least one network component (110, 180, 301) is determined in accordance with an application plan comprising timing and interaction information of the application components within the application control network. The configuration profile is transmitted to a network component (102, 110, 180) communicatively close to the at least first network component, in particular the data forwarding device the first network component is attached to, for storage and for subsequent transmission to the first network component (110, 180, 301) after the first network component (110, 180, 301, L1-L3) has been rebooted.

Abstract: The invention relates to a PoE lighting system (1) comprising an emergency lighting device (4), a first PSE device (6) and a second PSE device (2). The first PSE device is adapted to provide power based on a) first power received from a first power source or b) second power received from a second PSE device via a first fire-resistant PoE connection (3) in case of emergency. The first PSE device is adapted to detect whether power is received from the second PSE device and to provide power to the emergency lighting device based on the second power via a second fire-resistant PoE connection (7), if it has been detected that power has been received from the second PSE device. This can allow for a provision of PoE emergency lighting in case of fire, even if a communication via the fire-resistant PoE connections is not possible anymore.

Abstract: The invention relates to a power distribution system for distributing power from a power supply (2) to several electrical loads (4, 5) via sockets (3). The sockets receive power requests from the electrical loads and transmit the power requests to a master device (9) which controls the power to be provided by the respective socket based on the received power requests. Since the master device receives all power requests from the sockets and has therefore an overview of the overall power requirements, the master device can determine the power to be provided by the respective socket under consideration of this knowledge. This can lead to an improved determination of the power to be provided by the respective socket and hence to an improved overall power distribution.

Abstract: The present invention relates to a powered device (331a, 331b, 531a) with two interfacing connections. The powered device (331a, 331b, 531a) comprises power switching units (350a, 350b, 550a1, 550a2) for forwarding the data signal as well the power received on the input to the output. Forwarding may be based on a detection of the powering state of the PD. In another embodiment, the Power-over-Ethernet input/output ports function bi-directionally, thereby allowing the user to daisy-chain devices in any direction. As power switching units, relays or solid-state power switches may be used.

Abstract: The invention relates to a powered device (2) like a luminaire for being used in a power distribution system (100), which is preferentially a PoE system and which comprises a power supply device (1). The powered device includes an electrical load like a light source, a voltage measurement unit for measuring a voltage received by the powered device, and an electrical load power providing unit for transforming power supplied by the power supply device to an electrical load power to be provided to the electrical load, wherein the power level of the electrical load power depends on the measured voltage. This allows adapting the power intake to the really received voltage, which may be reduced due to losses like cable losses, which in turn can lead to an increased intake power in comparison to the intake power of powered devices in accordance with the actual Po E IEEE 802.3at standard.

Abstract: The invention relates to a system (1) comprising a controlling device (4) like a sensor for controlling a controlled device (5) like a luminaire, a trigger unit (7) for generating a trigger signal, and an assigning unit (6) for assigning the controlling device and the controlled device to each other, if the trigger signal has been generated, wherein the controlling device controls the controlled device, if they have been assigned to each other. This allows an installer to generate assignments between the controlling device and the controlled device very easily. The installer just needs to connect the controlling and controlled devices, which should be assigned to each other, to the system and actuate the trigger unit. For instance, it can relatively easily be defined which luminaires should react on signals from which sensors.

Abstract: The invention relates a system for controlling distribution of power to load elements via network connections (e.g. LAN). Low cost luminaires or other load elements can be powered via LAN connections (e.g. by power over Ethernet (PoE)) without featuring an Internet Protocol (IP) node. This is attractive because with such a system the installation cost down benefits of PoE can be applied also to installations that do not require advanced controls. This means that to switch them on or off, the power supply on the LAN port of the switch must be enabled or disabled. When load elements and load controllers (e.g. lighting controllers or light switches) are connected to the same switch, they are automatically paired to each other. This can be achieved through use of a network management protocol capability that some network switches have. This allows for easy installation and automatic intuitive commissioning.

Abstract: A lighting system and a method for a operating a lighting system, enabling to obtain an identification tag (7) comprised in lighting design data (5) directly from an output beam (3), i.e. from the emitted light of the at least one lighting unit (2). It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.

Abstract: Described is a management unit (1) and a method for operating such a unit in a Power-over-Ethernet (PoE) installation. The management unit (1) comprises at least one first port (12a) to which an external device (2) can be connected, and it is adapted to control the power delivered at a first port (12a) in dependence on predetermined switching rules.

Abstract: The invention relates to a controlling system (4) for controlling loads (2), especially lighting units, of a power/data-communication system like a PoE system, wherein a command is provided, which defines desired power levels of loads of the power/data-communication system. An overall power change amount is determined, which will be caused by the provided command, and the loads are controlled such that the slope of the overall power consumption of the loads, when being set to the desired power levels, is reduced, if the determined overall power change amount is larger than a predefined power change threshold. Thus, if the provided command may lead to an overall power change amount causing problems like blown fuses, the loads are controlled such that the slope of the overall power consumption of the loads, when being set to the desired power levels, and hence the likelihood of, for instance, blown fuses is reduced.