Method and system of controlling a door drive
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United States of America Patent
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Issued Date -
May 7, 2009
app pub date -
Oct 3, 2008
filing date -
Oct 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a method of controlling a door drive, in particular of a roller door, wherein a capacitive sensor is used for the automatic recognition of obstructions in the region of the door closing path, wherein the recognition of obstructions on the closing of the door takes place by a comparison of the then current change in the capacity of the capacitive sensor with respect to a variable with a reference value or a reference curve.The invention furthermore includes a corresponding system of controlling a door drive.
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