DEVICE AND METHOD FOR CHECKING A SWITCHING OPERATION OF AN ELECTRIC SWITCH
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United States of America Patent
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Sep 1, 2016
app pub date -
Oct 7, 2014
filing date -
Oct 7, 2013
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Abstract
In order to check a switching operation of an electric switch (1-3), a movement of a movable switching element (1) of the electric switch (1-3) is sensed during the switching operation. For that purpose, a marking element (11) is used, the marking element (11) having a magnetization pattern comprising a plurality of magnetic markings. A path length (9) of a relative movement between the marking element (11) and a sensor (12) is determined.
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