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简单的状态机与两个光单元相接来控制加 减计数器。状态机提供滞
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2009-05-15
张杰
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A common technique for counting objects is to pass
them through a light beam. Problems can arise, however,
if a part dithers on the edge of the light beam and is
counted more than once, or if the direction of motion
changes and a part is recounted rather than uncounted.
them through a light beam. Problems can arise, however,
if a part dithers on the edge of the light beam and is
counted more than once, or if the direction of motion
changes and a part is recounted rather than uncounted.
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