| 摘要 |
An elevator system including an elevator car mounted for guided movement in the hoistway of a building having a plurality of floors. The speed of the elevator car versus its position is monitored in terminal zones adjacent to the terminal floors, as the elevator car approaches each terminal floor. An overspeed signal is generated when an overspeed condition is detected. If the elevator car is traveling towards a terminal floor in a terminal zone but is not set to decelerate and stop at the terminal floor, the conditions for issuing the overspeed signal are modified such that the issuance of the signal is advanced in time, compared with the time at which it would be provided without such modification, with the magnitude of the advancement being inversely proportional to the speed of the elevator car.
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