Elevator Shaft Projector for Safety Space Visualization
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Solution Overview
Problem
Elevator maintenance personnel face difficulties in accurately identifying the location of safety volumes and refuge spaces within elevator shafts, as traditional signs can be hard to read and interpret when inside the shaft or pit, potentially leading to safety risks during maintenance operations.
Innovation Solution
The implementation of an elevator maintenance space projection system using a projector to physically project clear, two- or three-dimensional images of safety volumes, refuge spaces, and maintenance locations within the elevator shaft, providing unmistakable visual indicators on the car top or pit floor, which can be color-coded and include indicator information to define boundaries and purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional signs or panels are mounted on the elevator car or shaft wall to indicate safety volumes and refuge spaces, then the indication is provided, but the indication becomes hard to read and interpret when the mechanic is inside the shaft or pit
Solution Approach 1:
The patent transitions from two-dimensional flat signs mounted on walls or cars to three-dimensional projected images that float within the safety volume space itself. The projector projects images into the pit or shaft area, creating spatial indicators that mechanics can see from multiple angles and distances, solving the readability problem when inside the confined space.
Solution Approach 2:
The patent introduces a projector as an intermediary device between the information source (safety space boundaries) and the mechanic. The projector acts as a mediator that transforms static sign information into dynamic, multi-angle projected images that can be viewed clearly from various positions within the shaft or pit.
2Measurement precision
If a panel or sign is mounted to indicate refuge space location, then the location is designated, but it may be hard to be sure of the exact location of the position of the refuge space once the mechanic is located in the pit or on top of an elevator car
Solution Approach 1:
The patent uses three-dimensional projected images that spatially represent the refuge space boundaries and location. Instead of a flat sign that requires interpretation, the projection creates a visual model of the refuge space that mechanics can easily locate and understand from any position within the shaft or pit, significantly improving location identification accuracy.
Solution Approach 2:
The patent employs color-coded projected images to indicate different types of spaces (safety volume, refuge space, maintenance location). Different colors provide immediate visual differentiation, making it easy for mechanics to identify the exact location and purpose of each zone without confusion or misinterpretation.
3Illumination intensity
If traditional signs are used to indicate safety volumes, then the indication is provided, but the indication may not be clearly visible or interpretable in the confined space environment of the pit or shaft
Solution Approach 1:
The patent replaces traditional mechanical sign systems with an optical projection system. The projector uses light to create visible images within the confined space, providing illumination and visibility that is not dependent on the physical properties of mounted signs. This optical approach ensures clear visibility of safety boundaries even in the challenging lighting conditions of pits and shafts.
Solution Approach 2:
The patent uses color-coded projections to enhance visibility and differentiate between various safety zones. The colored projected images provide high-contrast visual indicators that are easily distinguishable in the confined space environment, reducing the risk of misinterpretation and improving overall safety during maintenance operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances safety by providing clear, continuous visual indications of maintenance spaces, reducing the risk of misinterpretation and ensuring accurate location awareness for mechanics during maintenance operations, thus improving operational safety.
Implementation Method 1
a projector located within an elevator shaft and arranged to project a display space within the elevator shaft such that the display space includes one or more projected images
Data Source
AI summary
Elevator maintenance space projection systems and elevator systems including a projector located within an elevator shaft and arranged to project a display space within the elevator shaft such that the display space includes one or more projected images identifying at least one of a safety volume, a refuge space, and a maintenance location.