A SAFETY PROTECTION ARRANGEMENT FOR A LIGHTING ARRANGMENT

摘要

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.

主权项

1. 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 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 the 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.