SYSTEMS AND METHODS FOR MONITORING ELEVATOR DUAL COIL ELECTROMECHANICAL BRAKES
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United States of America Patent
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Issued Date -
Aug 10, 2023
app pub date -
Jan 26, 2023
filing date -
Jan 26, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of the present disclosure are directed to a system for monitoring conditions of elevator braking assemblies. The system includes a processing device configured to receive an actual braking current data from the elevator braking assembly, determine a derivative, plot a derivative curve, determine a region of interest of the derivative curve that corresponds to an expected movement of the at least one mobile plate of the elevator braking assembly, determine whether a pair of inflection points occurred during the region of interest where one of the inflection points is a minimum point and the other is a maximum point, the maximum having a greater amplitude than the minimum point and occurring after the minimum point, and when the pair of inflection points does not occur during the region of interest, output an alert to the elevator controller to instruct the elevator controller to inhibit movement of the elevator cab.
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