| 摘要 |
The invention relates to a method for determining a draft angle between the longitudinal extension of the weft threads or stitches courses of a textile web (T) that is continuously conveyed in a conveyor device (M) and the vertical to the conveying direction, using a lighting device (100A), a photoelectric sensor device (107) with a plurality of sensor elements, and an evaluating device (115) for processing the scanning values of the sensor fields in order to obtain a draft angle. Said evaluating device is connected to the sensor device. An arrangement of randomly accessible sensor elements with a plurality of rows and columns is used and different predetermined groups of sensor elements are interrogated in successive interrogation steps, said sensor elements lying on essentially one sensor field line respectively. In each interrogating step, the groups are determined in such a way as to interrogate sensor field lines with successive modified angle positions in relation to the conveyor device.
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