US 12,434,629 B2
Method for detecting a failure in a solid-state light source of an automotive lighting device and automotive arrangement
Rabih Taleb, Bobigny (FR); Hafid El-Idrissi, Bobigny (FR); and Marouene Karray, Bobigny (FR)
Assigned to Valeo Vision, Bobigny (FR)
Appl. No. 18/248,895
Filed by VALEO VISION, Bobigny (FR)
PCT Filed Oct. 15, 2021, PCT No. PCT/EP2021/078707
§ 371(c)(1), (2) Date Apr. 13, 2023,
PCT Pub. No. WO2022/079298, PCT Pub. Date Apr. 21, 2022.
Claims priority of application No. 2010588 (FR), filed on Oct. 15, 2020.
Prior Publication US 2023/0382300 A1, Nov. 30, 2023
Int. Cl. H05B 45/56 (2020.01); B60Q 11/00 (2006.01); G01J 3/50 (2006.01)
CPC B60Q 11/005 (2013.01) [G01J 3/50 (2013.01); H05B 45/56 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A method for detecting a failure in a solid-state light source of an automotive lighting device, the method comprising:
providing, by a control unit, an estimated temperature profile for the lighting device;
measuring, with one of a plurality temperature sensor, an actual temperature profile of the lighting device;
comparing, by the control unit, the estimated temperature profile with the actual temperature profile in order to detect a difference between the estimated temperature profile and the actual temperature profile;
activating, by the control unit, a first lighting functionality only in a section of the lighting device;
measuring, with one of the plurality temperature sensor, a second actual temperature profile in the lighting device;
measuring, with one of the plurality temperature sensor, a third actual temperature profile in the section of the lighting device; and
comparing, by the control unit, the estimated temperature profile with the second actual temperature profile and with the third actual temperature profile.