Photoelectric Sensor Intersection for Object Attribute Measurement
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Solution Overview
Problem
Existing systems for determining the size and location of cylindrical, symmetrical objects like tires transported by conveyance mechanisms are often expensive and require complex equipment, limiting their accessibility for applications such as barcode scanning and image processing.
Innovation Solution
The use of photoelectric sensors positioned at angled orientations to emit light rays that intersect at a point, allowing for the determination of object attributes like diameter and position, thereby enabling efficient identification of regions of interest and reducing processing power requirements for image stitching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional scanning instruments are used to locate objects, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The system segments the measurement function into multiple simple photoelectric sensors positioned at different angles, each contributing partial information about object position and size. This replaces the need for a single complex three-dimensional scanning instrument while achieving comparable measurement precision through coordinated data from multiple simple sensors.
Solution Approach 2:
Standard photoelectric sensors, typically used for simple presence detection, are repurposed to perform precise dimensional and positional measurement by arranging multiple sensors at specific angles. This multi-functional use of simple components achieves measurement capabilities previously requiring specialized expensive equipment.
2Device complexity
If photoelectric sensors are used instead of three-dimensional scanning instruments, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
Multiple simple photoelectric sensors are merged into a coordinated measurement system where each sensor contributes to determining both position and size parameters. By combining the data from sensors positioned at different angles, the system achieves comprehensive measurement precision comparable to complex instruments while maintaining simplicity of individual components.
Solution Approach 2:
The system uses angular positioning of sensors in addition to their spatial arrangement, creating a multi-dimensional measurement geometry. This dimensional approach allows simple sensors to extract precise positional and dimensional information by analyzing interruption patterns across multiple angular perspectives.
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
This approach provides a low-cost, simplified method for determining object attributes, enabling precise barcode detection and reducing processing power, while providing size and location information for verification and monitoring purposes.
Implementation Method 1
a first light ray is emitted from a first photoelectric sensor. A second light ray is emitted from a second photoelectric sensor
Data Source
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AI summary
Systems and methods are provided for determining attributes (such as size and location) of target objects (e.g., tires) utilizing photoelectric sensors. At least two photoelectric sensors are positioned at respective angles relative to a direction of transport of a conveyance mechanism such that the light rays emitted therefrom cross the width of the conveyance mechanism and cross one another at an intersection point. Based, at least in part, upon respective interruption times of the light rays by the target object, and a location of the interruption of the light rays relative to the intersection point, one or more attributes of the target object are determined. Systems and methods further are provided for determining a height profile of a target object utilizing at least one photoelectric sensor.