Elevator Control Device Position Detection via Releveling Backup
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Solution Overview
Problem
The existing elevator landing device fails to recognize when the car is within the door openable range, leading to operational issues when the landing device malfunctions.
Innovation Solution
An elevator control device that utilizes signals from other position-detecting devices, such as the releveling device or traction machine encoder, to determine the car's position and ensure it is within the door openable range, even if the landing device has failed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the landing device is used to detect car position, then the door openable range can be identified, but the system fails when the landing device malfunctions
Solution Approach 1:
The patent introduces an intermediary approach by using the releveling device as a mediator to detect car position when the landing device fails. The releveling device, which is already present in the system for leveling operations, serves as a backup position detection mechanism, enabling the system to maintain functionality without adding new hardware.
Solution Approach 2:
The patent applies multi-functionality by utilizing the releveling device for dual purposes: its primary function of detecting releveling zone plates for leveling operations, and its secondary function of detecting door zone plates to determine car position for door opening operations. This eliminates the need for separate dedicated devices for each function.
2Reliability
If additional position detection devices are added, then the system can recognize car position when landing device fails, but device complexity increases
Solution Approach 1:
The patent demonstrates multi-functionality by enabling the releveling device to perform both leveling operations and position detection for door opening. The releveling device detects door zone plates in addition to its primary function of detecting releveling zone plates, providing backup position detection capability without adding new hardware.
Solution Approach 2:
The system applies self-service by utilizing existing components (releveling device) to perform backup functions when primary components (landing device) fail. The releveling device serves itself by detecting door zone plates during its normal operation, providing automatic backup position detection without requiring external additional devices.
Data Source
AI summary
There is provided an elevator control device that can recognize that a car is within a door openable range even when a landing device has failed. The elevator control device includes a control unit configured to, when the landing device of the elevator has failed, position the car within the door openable range based on a signal from another device that detects a position of the car of the elevator. With this configuration, even when the landing device has failed, it is possible to recognize that the car is within the door openable range based on the signal from the other device.