Elevator rescue system and method

Abstract

The invention discloses an elevator rescue system and method. The elevator rescue system comprises an elevator controller, a brake unit and an auxiliary control unit. The elevator controller is used for entering a conventional rescue state and execute conventional rescue when the elevator controller is normal, a power grid is abnormal and a car is in a non-gate area and controlling the brake unitto enable the car to operate and stop in a gate area, and used for entering an intelligent rescue state when the elevator controller is abnormal and the car is in the non-gate area. The auxiliary control unit is used for executing intelligent rescue when the elevator controller enters the intelligent rescue state, and controlling the brake unit to enable the car to operate and stop in the gate area. When the elevator controller breaks down, intelligent rescue is achieved through the auxiliary control unit, accordingly, people stuck phenomena are reduced, and maintenance is convenient. Further,an elevator in normal operation is independent from power supply in two rescue states; and when the elevator controller breaks down, power can be directly supplied to the brake unit through the auxiliary control unit for achieving intelligent rescue, and the people stuck phenomena are avoided.

Description

technical field [0001] The present invention relates to the field of elevators, in particular to an elevator rescue system and method. Background technique [0002] In the existing elevator drive products, in order to prevent passengers from being locked in the car for a long time after a sudden power outage (abnormal power grid) during the operation of the elevator, which may cause physical discomfort, panic or even personal safety problems, it is necessary to add power outages to the system. emergency rescue plan. Based on this, the following two power failure emergency rescue solutions are currently provided: UPS (Uninterruptible Power System / Uninterruptible Power Supply, uninterruptible power supply) automatic rescue, ARD (automatic rescue device, automatic operation rescue device) automatic rescue. [0003] The above two power failure emergency rescue schemes are to provide power supply rescue when the system is powered off during the normal operation of the elevator a...

AI Technical Summary

Problems solved by technology

[0003] The above two power failure emergency rescue schemes are to provide power supply rescue when the system is powered off during the normal operation of the elevator and the current position is not in the door area, and they are only applicable when the controller is normal. Therefore, when the elevator enters UPS / ARD rescue operation, if At this time, the controller fails and the elevator car is not in the door area, so rescue cannot be done, and the elevator car will stop in the non-door area, resulting in trapped people

[0004] In addition, when the power grid is normal, if the controller itself fails, the above emergency rescue plan will also fail to complete the rescue, resulting in trapped people

In addition to a small number of grid power outages, the phenomenon of elevator trapping is often caused by the failure of the controller itself, such as overvoltage / overcurrent / current control failure / encoder failure, etc.

At this time, it is necessary to seek help from maintenance personnel, agents and manufacturers, and the rescue efficiency is low.

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