Safety protection arrangement for a lighting arrangement
AssigneeKoninklijke Philips N.V.
InventorsMarius Leendert Trouwborst, Ramon Antoine Wiro Clout, Jacobus Petrus Johannes Van Os, Franciscus Antonius Kneepkens
Life of this patent
Estimating the term…
Abstract
A safety protection arrangement is provided for a lighting arrangement. An electrical parameter is measured with the driving of the lighting arrangement with particular driving settings and it is compared with an estimated expected value of the electrical parameter so that a safety warning signal or a shutdown can be provided in the event of a detected system failure.
Claims13
A safety protection arrangement for a lighting arrangement, the light arrangement comprising an array of lighting units, each lighting unit being an individually addressable LED, comprising:
- a measurement arrangement for measuring a value of an electrical parameter associated with the driving of the lighting arrangement with at least one particular driving setting, wherein the electrical parameter being a data signal which sets a configuration of the lighting arrangement, wherein the data signal comprises a sequence of bits/bytes and wherein the data signal is arranged to pass through each of the LEDs of the lighting arrangement;
- an estimation arrangement for estimating an expected value of the data signal based on the at least one particular driving setting of the lighting arrangement;
- and
- an analysis arrangement for comparing the measured value (Datareturn) with the estimated value to detect a system failure, and providing a safety signal in the event of a detected system failure.
A method of detecting system failure of a lighting arrangement comprising a plurality of LEDs, each LED being an individually addressable LED, the method comprising:
- measuring a value of an electrical parameter associated with the driving of the lighting arrangement with at least one particular driving setting, the electrical parameter being a data signal which sets a configuration of the lighting arrangement, wherein the data signal comprises a sequence of bits/bytes and wherein the data signal is arranged to pass through each of the LEDs of the lighting arrangement;
- estimating an expected value of the data signal based on the at least one particular driving setting of the lighting arrangement;
- comparing the measured value (Datareturn) with the estimated value to detect a system failure;
- and
- providing a safety signal in the event of a detected system failure.
Dependencies are inferred from the claim text.