Methods for detecting malfunctions of laser scanners, laser scanners and automobiles

摘要

The present invention relates to a laser scanner (2) of a vehicle (1) in which a laser beam (12) of a laser scanner (2) is transmitted through a protective screen (6) of a laser scanner (2) , Wherein the echo (16) of the transmitted laser beam (12) reflected at least partly in the protective screen (6) is detected by the receiving unit (9) of the laser scanner (2) Is received with an intensity value (19), and a malfunction of the laser scanner (2) is detected when the intensity value (19) is different from the reference intensity value.