| 摘要 |
The appliance has light sensitive sensors (4a,4b,..) for determining the position of products (2a,2b) on a conveyor belt moving relative to the sensors. A light source is positioned along at least one scanning line (3a,3b) across the direction of movement (14) of the conveyor belt. The row of sensors positioned along the scanning line record the light pattern caused by the products passing between the light source and the sensors. The sensors can be arranged on the side of a transparent conveyor belt remote from light source to record the shadow cast by the product |
