| 摘要 |
The invention concerns appliances for counting people or objects, in particular people moving in a wide passageway. Such an appliance essentially comprises a computerised monitoring and processing unit (2) associated with an optical sensor (1) arranged at great height and consisting of two charge coupling jumper straps (3, 4) which are linear, parallel and transverse to the passageway to be controlled, an optical device with one or two objectives (5, 6) being positioned in front of the straps. The invention is useful for monitoring wide passageways, for instance the entrances of departmental stores, of railway stations and of airports. |
