Confined Area Object Detection Using Laser Scanner Pattern Resolution
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Solution Overview
Problem
Existing object detection systems in confined areas, such as loading docks, face challenges in accurately warning drivers and pedestrians of potential hazards due to limited visibility, noisy environments, and issues with detecting multiple objects, particularly when smaller objects block larger ones, leading to reduced apparent size and false alarms.
Innovation Solution
A scanner unit configured to provide directional and distance indications of objects within a scan area, using an opto-electronic laser scanner to detect objects and track their movements, with a computer system to resolve patterns and render alarm signals based on object positions and movements, ensuring accurate warnings without false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a scanner detects multiple objects in a confined area, then object detection capability is improved, but small objects block larger objects reducing measurement precision
Solution Approach 1:
The system transitions from 2D scanner readings to 3D spatial reconstruction by integrating multiple scanner positions and using triangulation mathematics. This dimensional elevation allows the system to resolve occluded objects by calculating their positions in three-dimensional space, effectively seeing around blocking objects through mathematical reconstruction rather than direct line-of-sight detection.
Solution Approach 2:
The system introduces an intermediary computational layer that processes scanner data. Instead of directly interpreting scanner readings, the system uses mathematical algorithms as intermediaries to reconstruct object positions and sizes, particularly for objects that are partially blocked. This intermediary processing layer transforms incomplete scanner data into accurate object measurements.
2Ease of operation
If audible warnings are used in noisy environments, then warning capability is improved, but false alarms are ignored by workers
Solution Approach 1:
The system applies local quality by providing specific, location-based warnings rather than general alarms. The optical scanning system identifies precise object locations and directs warnings only when actual hazards are detected in specific zones. This localized approach ensures warnings are relevant to the immediate situation, maintaining worker credibility while remaining effective in noisy environments.
Solution Approach 2:
The system implements feedback by continuously monitoring the environment and providing real-time warnings only when actual hazards are detected. The system learns from environmental conditions and adjusts warning issuance based on actual risk assessment, preventing false alarms while maintaining high reliability. The feedback loop ensures warnings remain credible by being issued only when genuinely necessary.
3Loss of information
If mirrors and video arrangements are used for visibility, then driver awareness is improved, but visibility remains limited when backing
Solution Approach 1:
The system replaces mechanical mirrors and video arrangements with an optical scanning system that uses electromagnetic radiation (laser or other light sources) to detect objects. This substitution eliminates the line-of-sight limitations of mechanical systems, allowing the scanner to detect objects in areas not visible to mirrors or video cameras, providing comprehensive coverage during backing operations.
Solution Approach 2:
The optical scanning system provides multi-functional capability by simultaneously performing object detection, distance measurement, and hazard identification in various environmental conditions. Unlike mirrors and video arrangements that are limited by visibility conditions, the scanner can operate effectively in low light, darkness, and various weather conditions, providing universal backing guidance functionality.
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
The system effectively warns drivers and pedestrians of potential hazards by providing clear visual and audible alerts, reducing false alarms and accurately identifying objects, even in complex scenarios with multiple objects, thereby enhancing safety in confined areas.
Implementation Method 1
using an opto-electronic laser scanner to detect objects
Data Source
AI summary
Alarm indications of objects (431, 631) in spaces (113) subject to vehicle movements are provided using a scanner unit configured to provide indications of directions and distances of objects within a scan area. A computer compares the signal output from a scanner unit (121) and resolves the signal output to a pattern of the indications of directions and distances, and further resolve multiple instances of the indications over time to resolve the pattern of indications and distances to movement corresponding to the movement of the objects (431, 631). The indications are compared to render an indication of objects (431) partially blocked by other ones (631) of the objects from line-of-sight of the scanner unit (121). Predetermined relative movements of the objects (431, 631) as resolved by the computer render predetermined indicator or alarm signals (341, 342, 345).