DEVICE FOR DETECTION OF A FAULTY FUNCTION OF A PLANAR OLED LIGHT SOURCE OR A GROUP OF OLED LIGHT SOURCES, ESPECIALLY FOR A HEADLIGHT OR A LAMP OF A MOTOR VEHICLE

摘要

The device for detecting a faulty function of a planar OLED light source or group thereof, comprises a main connector for supplying input voltage to the control unit adapted to receive information from the detector, and to control the voltage- or current-generating power supply unit for the measured OLED light source(s) via a sensing unit measuring the course of the V-A characteristic and/or certain evaluation point(s) thereof of the measured OLED source(s), and connected to a detector for evaluation whether the measured OLED source(s) exhibits a faulty function, and communication of the evaluated data to the control unit. It further comprises a temperature sensor to measure the temperature of the OLED source(s) and/or of their environment, the detector configured so that to evaluate whether the measured OLED source(s) exhibits a faulty function, the known course or certain evaluation point(s) of the V-A characteristic of a faultless OLED source is compared to established values of the measured OLED source(s), accounting for the measured temperature.