| 摘要 |
An apparatus for selecting a floor, and slowing down and leveling an elevator is described. At least one wire or rod extends vertically along the elevator shaft. The wire or rod is of a nonmagnetic material and has magnetic coatings thereon along selected segments of its length. A number of magnetic sensors are mounted to the elevator. A circuit responsive to the sensor outputs produces control signals dependent on the length of each segment of magnetic coating.
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