System and method for determining location and skew of crane grappling member
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United States of America Patent
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Sep 19, 2017
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app pub date -
Jul 17, 2012
filing date -
Jul 18, 2011
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Abstract
A system for determining the horizontal location and skew of a grappling member of a crane includes at least two types of reflectors arranged on the grappling member, the relative locations and shapes of which are known; at least one scanning distance sensor mounted on the crane to measure the distance and direction from the crane to the reflectors; and a data processing device arranged to store in its memory the relative locations and shapes of the reflectors; and to determine the horizontal location and skew of the grappling member on the basis of at least the relative locations and shapes of the reflectors and measured distances and directions from the crane to the reflectors.
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