Elevator Landing Door Gib Inspection via Automated Optical Detection
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Solution Overview
Problem
Elevator systems require frequent inspections of landing door gibs to ensure safety and compliance with maintenance routines, which is time-consuming and costly when performed manually.
Innovation Solution
An automated inspection system using a control unit and detector, with indicator elements like colored paint, textured surfaces, or reflective surfaces, to analyze the state of landing door gibs, allowing for efficient and remote monitoring of their operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection of landing door gibs is performed, then inspection accuracy can be ensured, but inspection time and cost increase significantly
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated optical detection system. A detector (camera) captures images of the landing door gib area, and a control unit processes these images to automatically identify gib status. This substitution eliminates manual labor while maintaining inspection accuracy through digital image analysis, directly resolving the contradiction between inspection precision and time consumption.
Solution Approach 2:
The system creates a visual copy (image) of the landing door gib region and analyzes this copy digitally rather than requiring physical manual inspection. The detector captures an optical copy of the inspection area, which is then processed by the control unit to determine gib status. This copying approach enables rapid automated analysis without sacrificing detection accuracy.
2Measurement precision
If technicians manually inspect landing door gibs, then detailed examination can be performed, but safety risks and operational disruption increase
Solution Approach 1:
The patent replaces human technicians with an automated detection system consisting of a detector and control unit. This eliminates safety risks associated with technicians entering the elevator shaft or approaching moving parts, while the control unit's image processing capabilities maintain detailed examination quality through automated feature recognition and analysis.
Solution Approach 2:
The system performs self-inspection by automatically capturing images and analyzing gib status without human intervention. The detector and control unit work autonomously to examine the landing door gibs, eliminating the need for technicians to physically access hazardous areas while maintaining comprehensive examination capabilities through automated image processing.
3Reliability
If frequent inspections are conducted to ensure safety compliance, then safety reliability improves, but operational efficiency decreases
Solution Approach 1:
The automated detection system enables frequent inspections by eliminating the time-consuming manual process. The detector and control unit can rapidly capture and analyze images of landing door gibs, allowing safety compliance checks to be performed frequently without significantly impacting operational efficiency. The automated nature of the system makes frequent monitoring practical and cost-effective.
Solution Approach 2:
The system enables continuous or near-continuous monitoring capability by automating the inspection process. Rather than relying on periodic manual inspections that disrupt operations, the automated detector and control unit can perform inspections continuously or at frequent intervals without interrupting elevator service, thereby maintaining high safety reliability while preserving operational efficiency.
Data Source
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AI summary
Elevator systems and methods for inspection having an elevator car (303) within an elevator shaft, a plurality of landing doors located at respective landings within the elevator shaft, a landing door gib (320) located on one of the landing doors (302) and subject to inspection, the landing door gib (320) having an indicator element (324) thereon, and an inspection system (300) comprising a detector (314) located on an exterior of the elevator car (303) and arranged to detect the presence of the indicator element (324) in an inspection region.