System and method for controlling multiple elevator cars in an elevator shaft

Abstract

A system and method for controlling a plurality of elevator cars in an elevator shaft of a building comprising: at least one of said elevator shafts having a plurality of zones each representing at least one of said buildings floors; at least one zone with at least one sensor; at least two elevator cars capable of moving within the shaft, each of the cars being movable independently of the other cars; and a controller that determines each car's entry into the zone exercise. The first car before any other car is designated as the lead car; each car after the lead car is designated as the trailing car; each car may move in the same direction of travel to serve multiple zones until each car has reached its designated end zone; where the controller instructs the trailing car to move into a zone with This area of ​​the sensor is thus protected from collisions.

Description

technical field [0001] The present invention relates broadly to a system and method for controlling the movement and position of a plurality of elevator cars that move independently of each other in an elevator shaft. Background technique [0002] Currently, there is no safe, simple, efficient and low-cost way to control the movement and position of multiple elevator cars moving independently of each other in the same elevator shaft. [0003] Most current elevator control systems that control multiple cars in the same shaft only work with one elevator car in each separate zone of each elevator shaft, so it is physically impossible for two cars to collide. Some of these systems assign cars from ground floors to groups of upper floors and then run only one car on each group of floors. All of these systems are very inefficient because each zone of each elevator shaft is used by only one elevator car. Other high-tech control systems propose that multiple cars can operate indep...

AI Technical Summary

Problems solved by technology

However, most of these systems are very complex, unreliable, expensive, and unsafe because many unexpected things can happen to cause a collision, such as power outages, power fluctuations, data crosstalk, possible sensor failures, possible electrical Cross circuits, computers may crash, and more

Some systems have mechanical anti-collision methods, but they can also fail, and they are unwieldy, require slow elevator speeds, and are limited to two elevator cars

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