Laser Scanner Hood for Object Protection
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Solution Overview
Problem
Existing object protection systems using laser scanners face challenges in achieving high spatial and temporal resolution while efficiently detecting penetrators, especially for complex objects, due to the need for multiple scanners and complex structural arrangements, which can lead to incorrect detections and high installation costs.
Innovation Solution
A device comprising at least two laser scanners with upwardly oriented scanning fans that intersect to form a closed scanning hood, using MTA zone-selective technology to correctly assign reflections and optimize detection regions, with optional redundant scanning hoods and adjustable scanning angles for improved resolution and reduced false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple laser transmitters are used to improve spatial and temporal resolution, then detection precision is improved, but device complexity and structural outlay increase significantly
Solution Approach 1:
The monitoring space is divided into multiple scanning fans, each generated by a single laser scanner. Each scanning fan is independently controlled and can be oriented upwardly at different inclines. This segmentation allows high resolution through multiple scanners while keeping each individual scanner simple and easy to install.
Solution Approach 2:
The patent introduces a new dimension by orienting scanning fans upwardly at inclines rather than only horizontally. This vertical dimensionality allows the scanning fans to form a closed hood structure that covers the object from multiple angles, improving detection precision without requiring additional horizontal scanners.
2Area of stationary object
If multiple laser transmitters are arranged to monitor large spaces, then coverage area is improved, but correct assignment of reflections becomes practically impossible
Solution Approach 1:
Each laser scanner is equipped with a memory unit that stores information about previously emitted laser beams and their expected reflection patterns. This preliminary action allows the system to correctly assign reflections to the appropriate scanning fan by comparing current reflections with stored reference data, eliminating ambiguity in multi-scanner environments.
3Reliability
If laser scanners are mounted on the object itself to detect penetrators, then detection capability is improved, but the system can be flown over easily and requires high number of scanners for complex objects
Solution Approach 1:
Instead of mounting laser scanners on the object to be protected, the patent inverts the approach by placing scanners on the ground and orienting their scanning fans upwardly. This inversion creates a protective hood structure that covers the object from below, making it impossible to fly over without detection while reducing the number of scanners needed for complex objects.
4Reliability
If a closed scanning hood is formed by intersecting scanning fans, then false alarms are reduced, but device complexity increases
Solution Approach 1:
Each laser scanner performs multiple functions: it generates a scanning fan, detects penetrators within its coverage area, and contributes to forming the closed hood structure. The scanning fans are designed to be universally applicable with standard laser scanner components, and the multi-functionality reduces overall system complexity while maintaining high reliability through the closed hood configuration.
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 solution enables reliable detection of penetrators with high spatial and temporal resolution, adaptable to changing conditions, while minimizing structural complexity and false alarms, and can detect stealth technology-based threats by utilizing different wavelength ranges.
Implementation Method 1
they determine the propagation time of the laser beam and reflection thereof at a body penetrating the scanning fan
Implementation Method 2
Laser scanners that operate in accordance with a propagation time measurement principle are nowadays used in many areas; they determine the propagation time of the laser beam
Data Source
AI summary
The present application relates to a device for object protection, including at least two laser scanners, which are configured to each emit a laser beam scanning fan in front of the object and to detect a penetration of the scanning fan by a body by means of a reflection of the laser beam of the scanning fan on the body. The laser scanners are arranged on a ground next to the object and have laser beam scanning fans that are oriented upwardly. At least one of the laser beam scanning fans is oriented upwardly at an incline. The laser beam scanning fans intersect one another and the laser beam scanning fans form a closed scanning hood covering the object.