System for realizing direct stopping of elevator and control method thereof

Abstract

The invention discloses a system for realizing direct stopping of elevator and the implement method thereof, The system comprises a master control board, a frequency converter, an electromotor, an encoder, a flat layer inductive switch, a ductor, a car and a hoistway; the master control board acquires the accurate position of each layer and the absolute location of the car in the hoistway by the signals on the flat layer inductive switch, the doctor and the encoder, and control the start and stop of the frequency converter; the electromotor controlled by the frequency converter drives the elevator car to move up and down; the master control board acquires the object residual distance an the speed of the elevator by the encoder signal, determines the elevator speed curve and the deceleration points, acquires the actual distance to the target layer station by the flat layer inductive switch mounted on the car side wall and the inductors mounted on all the layer positions on the side wall of the hoistway when the elevator is approaching the target layer station, and corrects the speed and acceleration of the elevator thereby to cause the elevator to stop at the target position stably.

Description

technical field [0001] The present invention relates to an elevator system and its control method, in particular to a system for realizing direct parking of elevators and its control method. Background technique [0002] At present, most elevators on the market use the strategy of creeping a certain distance at a slow speed to achieve leveling when leveling. This method has relatively large limitations in practical applications. First of all, due to the existence of slow-speed crawling time, the operating efficiency of the elevator is not high; secondly, in order to control the crawling speed time, the crawling distance needs to be precisely controlled, which requires the product to be accurately tested before leaving the factory. It is often easy to cause the elevator to stop suddenly or crawl at a slow speed for a long time when it is leveling. For this reason, be badly in need of developing a kind of elevator direct stop system and the control method of this system to so...

AI Technical Summary

Problems solved by technology

First of all, due to the existence of slow-speed crawling time, the operating efficiency of the elevator is not high; secondly, in order to control the crawling speed time, the crawling distance needs to be precisely controlled, which requires the product to be accurately tested before leaving the factory. It is often easy to cause the elevator to stop suddenly or crawl at a slow speed for a long time when it is leveling.

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