| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring device measuring movements on a weaving machine, particularly determining speed of thread, facilitating an economic measuring process. SOLUTION: Digital signals can be produced at discrete points in time occurring in a periodic sequence by means of a positional determination of one or more identifiable points 31 which are located on a moved surface 30 and within a two dimensional measuring window 3 of the measuring device. Optical and electronic components 21, 22, 23, 20 for effecting pattern recognition are integrated in the measuring device. The identifiable positions can be defined by the pattern recognition. The positions of at least some of these positions can be determined at two sequential points in time of the sequence. The interval associated with the changes in position can be calculated at each of the discrete points in time. Thus the length of a path L traveled by the moved surface and also its speed v, V can be determined at these points in time. COPYRIGHT: (C)2005,JPO&NCIPI
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