Method for determining the weight of the car and counterweight in an elevator
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United States of America Patent
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Sep 17, 2024
Grant Date -
Oct 31, 2019
app pub date -
Jul 5, 2019
filing date -
Feb 8, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A method for determining the mass of a car and counterweight of an elevator, running in an elevator shaft along their traveling paths driven by an elevator motor, in which method at least one test run is performed preferably as complete round trip of the elevator car and counterweight, in which test run a) the hoisting system balance mB, b) the hoisting system friction FμS, and c) the hoisting system compensation ΔB is calculated from constant speed data, and in which test run d) the hoisting system inertia mass mI is calculated from constant acceleration/deceleration data. From these parameters the weight of the car and counterweight is calculated without any need of weight measurements, but merely by using the power data of the elevator drive unit.
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