Method and system for measuring the stopping accuracy of an elevator car
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United States of America Patent
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Oct 14, 2008
Grant Date -
Sep 20, 2007
app pub date -
Mar 5, 2007
filing date -
Sep 27, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a condition monitoring method and a corresponding system for measuring the stopping accuracy of an elevator car. In the invention, a door zone is defined for each floor, a door zone detector is mounted on the elevator car, the elevator car is moved towards a destination floor, acceleration values of the elevator car are measured during its travel towards the destination floor by means of an acceleration sensor attached to the elevator car and the distance of the stopped elevator from the edge of the door zone is calculated on the basis of the measured acceleration values.
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