Elevator Destination Override Controller

Solution Overview

Problem

In destination entry elevator systems, passengers who want to travel to a different floor than their prestored primary destination face inefficiencies as they need to locate an elevator group and manually enter a new request, leading to unnecessary car dispatches to the prestored destination.

Innovation Solution

A controller system that integrates with building access security, allowing passengers to override their prestored primary destination through a secondary request interface near the access point, such as a touch screen display, enabling seamless selection of alternative destinations and reducing unnecessary car dispatches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a destination entry system uses prestored destinations from building access cards, then elevator system efficiency is improved through automated destination assignment, but passenger flexibility deteriorates because passengers cannot easily change their destination without locating an elevator group and manually entering a new request

Engineering Contradiction:

Improveelevator system efficiencyVSAvoidpassenger destination change flexibility

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The system performs preliminary action by automatically assigning elevators to prestored destinations before the passenger actually needs to travel. The controller receives destination requests in advance through the building access card system and pre-assigns elevator cars, so that when passengers need to travel, the elevator is already positioned and ready, eliminating the need for manual destination entry at the elevator group.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously monitoring for override destination requests after the initial prestored destination is assigned. The controller waits for a period of time to see if the passenger makes a secondary request to change their destination, and if no override request is received within that time window, the system proceeds with the original prestored destination assignment, thus maintaining efficiency while allowing flexibility when needed.

Inventive Principle:

Principle #23Feedback

2Productivity

If the system automatically assigns cars to prestored destinations, then traffic management efficiency is improved, but passenger adaptability deteriorates because passengers cannot easily select different destinations without manually locating and using destination entry devices

Engineering Contradiction:

Improvetraffic management efficiencyVSAvoidpassenger destination selection adaptability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system performs preliminary action by automatically assigning elevators to prestored destinations before the passenger actually needs to travel. The controller receives destination requests in advance through the building access card system and pre-assigns elevator cars, so that when passengers need to travel, the elevator is already positioned and ready, eliminating the need for manual destination entry at the elevator group.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements dynamics by making the destination assignment flexible and adjustable. The controller is designed to dynamically respond to override requests, allowing the predetermined destination assignment to be changed based on real-time passenger needs. This dynamic capability enables the system to adapt between automated efficiency mode and manual override mode as required.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If passengers manually enter new destination requests at elevator groups, then destination flexibility is improved, but system efficiency deteriorates because cars are unnecessarily dispatched to service undesired prestored destinations

Engineering Contradiction:

Improvedestination request flexibilityVSAvoidelevator system efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system performs preliminary action by automatically assigning elevators to prestored destinations before the passenger actually needs to travel. The controller receives destination requests in advance through the building access card system and pre-assigns elevator cars, so that when passengers need to travel, the elevator is already positioned and ready, eliminating the need for manual destination entry at the elevator group.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously monitoring for override destination requests after the initial prestored destination is assigned. The controller waits for a period of time to see if the passenger makes a secondary request to change their destination, and if no override request is received within that time window, the system proceeds with the original prestored destination assignment, thus maintaining efficiency while allowing flexibility when needed.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS7353915B2Automatic destination entry system with override capability

Publication Date: 2008.04.08 OTIS ELEVATOR CO

AI summary

An elevator system (20) utilizes destination entry dispatching techniques. A controller (28) receives an automated destination request that includes a prestored, primary destination. This allows for seamlessly integrating building access and destination entry for the elevator system. A passenger interface (40) allows a passenger to override a prestored destination. The elevator controller (28) allows for override or secondary destination requests to be made at various intervals between receipt of the initial request and arrival of an initially assigned car at an appropriate level to let the passenger board the elevator car.