Object Analysis Light Grid for Gate Passage
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Solution Overview
Problem
Existing systems with light grilles struggle to accurately identify and classify objects passing through open gates without invasive methods or significant delays.
Innovation Solution
A system featuring a light grille with adjustable individual seals for sending and receiving light rays at different heights, combined with an evaluation device that analyzes the interruption patterns of these light rays to determine object type, size, and movement direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light grid is used to detect object presence and height, then the detection capability is improved, but the ability to identify and classify object types is insufficient
Solution Approach 1:
The light grid is divided into multiple individual light barriers at different heights, with each barrier detecting specific portions of the object. This segmentation allows the system to capture detailed spatial information about object shape and dimensions, enabling type identification beyond simple presence detection.
Solution Approach 2:
The system transitions from single-point detection to multi-dimensional pattern analysis by recording interruption states across multiple heights and time points. This creates a spatial-temporal pattern that characterizes different object types, enabling classification while maintaining detection precision.
2Measurement precision
If manual intervention or invasive methods are used for object identification, then identification accuracy is improved, but time consumption and operational complexity increase
Solution Approach 1:
The system automatically analyzes light interruption patterns and compares them against stored references to identify object types without manual intervention. The evaluation device processes data autonomously, eliminating time-consuming manual inspection while maintaining accurate identification through pattern matching.
Solution Approach 2:
Instead of physically inspecting objects, the system creates an optical copy (light interruption pattern) of the object's spatial characteristics. This digital pattern is then compared with reference patterns to identify object types, achieving accurate identification without physical contact or manual measurement.
3Measurement precision
If the number of individual light barriers is increased, then the resolution and identification capability are improved, but the device complexity increases
Solution Approach 1:
Each light barrier serves multiple functions: detecting object presence, measuring height, capturing spatial position, and contributing to type identification. This multi-functionality allows the system to achieve high resolution with a manageable number of barriers, as each component contributes to multiple measurement objectives simultaneously.
Solution Approach 2:
The system pre-stores reference patterns for different object types in the evaluation device. When objects pass through, their light interruption patterns are automatically compared against these pre-existing references, enabling rapid identification without requiring complex real-time analysis or an excessive number of sensors.
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
Enables rapid, non-invasive identification and control of objects passing through gates, improving security and efficiency by accurately determining object dimensions and types without manual intervention.
Implementation Method 1
The light grid has a plurality of individual light barriers for emitting and receiving light beams at different and defined heights and for detecting the passage of an object through the open gate
Data Source
Figure 1
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AI summary
A system for analyzing an object as it passes through an open gate or building opening, using a light grid and an evaluation unit. The light grid features numerous individual light barriers for emitting and receiving light beams at different, defined heights to detect the object's passage through the open gate. The evaluation unit is designed to assess the interrupted state of the individual light barriers and output a signal when a barrier is interrupted. Furthermore, the evaluation unit is designed to record and analyze the duration of changes in the interrupted state and, together with the different heights, generate a pattern of the object's height and length. The evaluation unit also includes a memory containing references for different types of objects.Furthermore, the evaluation unit is designed to identify the type of object by applying the reference to the pattern.