Power providing system
AssigneeSignify Holding B.V.
InventorsLennart Yseboodt, Matthias Wendt
Life of this patent
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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.
Claims13
A power providing device for a power providing system, wherein the power providing device is configured to operate in a classification mode, in which a class of the power providing device indicating an amount of power provided by the power providing device in an operational mode of the power providing device and a class of an electrical device of the power providing system indicating an amount of power at which the electrical device is operated in an operational mode of the electrical device are determined, wherein the power providing device is configured such that in the classification mode:
- in a first phase, the power providing device provides first one or several voltage pulses within a predefined voltage range to the electrical device, measures one or several classification current pulses drawn on the first one or several voltage pulses by the electrical device and determines the class of the electrical device based on the measured one or several classification current pulses,
- in a second phase, the power providing device provides second one or several voltage pulses within the predefined voltage range for indicating the class of the power providing device to the electrical device,
- wherein the first one or several voltage pulses from which the class of the electrical device is determined in the first phase is different from the second one or several voltage pulses indicating the class of the power providing device to the electrical device in the second phase.
An electrical device, wherein the electrical device is configured to operate in a two-phase classification mode, in which a class of a power providing device of a power providing system indicating an amount of power provided by the power providing device in an operational mode of the power providing device and a class of the electrical device indicating an amount of power at which the electrical device is operated in an operational mode of the electrical device are determined, wherein the electrical device is configured such that in the classification mode:
- in the a first phase, the electrical device draws one or several classification current pulses for indicating the class of the electrical device, while the power providing device provides first one or several voltage pulses within a predefined voltage range to the electrical device from which the one or several classification current pulses are drawn by the electrical device,
- in a second phase, the electrical device measures second one or several voltage pulses provided by the power providing device and determines the class of the power providing device depending on the measured second one or several voltage pulses,
- wherein the first one or several voltage pulses from which the class of the electrical device is indicated in the first phase is different from the second one or several voltage pulses from which the class of the power providing device is determined in the second phase.
A control method for controlling a power providing device comprising:
- in a first phase, providing first one or several voltage pulses within a predefined voltage range to an electrical device, wherein the electrical device draws, from the first one or several voltage pulses, one or several classification current pulses for indicating a class of the electrical device, and measuring the drawn one or several classification current pulses and determining the class of the electrical device based on the measured one or several classification current pulses,
- in a second phase, providing second one or several voltage pulses within the predefined voltage range for indicating a class of the power providing device to the electrical device,
- wherein the first one or several voltage pulses from which the class of the electrical device is determined in the first phase is different from the second one or several voltage pulses indicating the class of the power providing device to the electrical device in the second phase.
Dependencies are inferred from the claim text.