| 摘要 |
The present invention relates to devices for hooking up a trolley bus with at least one catenary. The device is characterised in that it comprises a reflector 34 situated to the side of the catenary, an incident laser beam 48 describing a cone 53, a light sensitive cell 58 detecting the beam reflected on the reflector, and means for determining the position of the incident beam when a beam is detected. <IMAGE> |
