Elevator safety control device
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United States of America Patent
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Aug 18, 2015
Grant Date -
Nov 22, 2012
app pub date -
Mar 12, 2010
filing date -
Mar 12, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An elevator safety control device realizing suppression in increase in cost and labor hour of installation and maintenance without deteriorating safety of normal safety control functions even when a plurality of safety control functions are provided. The elevator safety control device includes an independence assurance unit assuring independence of a safety control function. The independence assurance unit assures independence of each of the safety control functions by monitoring whether or not the safety control function accesses a memory other than a permitted region. When the independence assurance unit detects an access to the memory other than the permitted region by a predetermined safety control function, the elevator safety control device stops a car.
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