| 摘要 |
An optoelectronic monitoring device (1) with at least one light source (2) and at least one receiving element (4) which receives light from light source (2) that was reflected by an object. The receiving element determines the distance of the object. A testing unit (5-7) of the monitoring device checks the functionality of the receiving element (4) and modifies light received by the receiving element so that the receiving element (4) receives light which has been falsified by a predetermined or a known amount. A corresponding testing method is also described. |
