Mediated Reality Welding Helmet Light Intensity Control
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Solution Overview
Problem
Manual welding operations face challenges in maintaining operator visibility and eye protection due to the intense lighting conditions created by welding arcs, which existing technologies have not adequately addressed.
Innovation Solution
A mediated reality welding system integrated into welding headwear, featuring circuitry with cameras, light sensors, and a graphics processing unit that processes pixel data to enhance visibility by adjusting display settings based on light intensity, allowing operators to see the weld area more clearly through augmented or mediated reality views.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If welding arc is used to join materials, then welding strength and productivity are improved, but intense light emission causes operator eye strain and visibility problems
Solution Approach 1:
The patent introduces an intermediary device (welding helmet with augmented reality display) that mediates between the harmful welding arc light and the operator's eyes. The helmet captures the welding area through cameras, processes the images, and displays them on an AR display within the helmet, allowing the operator to see the weld pool clearly without direct exposure to the intense arc light.
Solution Approach 2:
The system creates a visual copy of the welding area by capturing images through cameras mounted on the helmet. These captured images are then processed and displayed on the AR display, providing the operator with a replicated view of the weld pool and surrounding area without requiring direct visual exposure to the harmful arc radiation.
2Reliability
If traditional welding helmets are used for eye protection, then operator safety is improved, but visibility and precision are reduced
Solution Approach 1:
The patent transitions from traditional 2D viewing through a darkened helmet lens to a multi-dimensional augmented reality display that overlays processed visual information in multiple layers. The AR display presents the welding area in enhanced dimensions, showing the weld pool, workpiece geometry, and process parameters simultaneously, thereby improving both safety and precision.
Solution Approach 2:
The system enhances visibility by applying color and contrast adjustments to the captured welding area images. The image processing algorithms optimize the visual presentation of the weld pool and surrounding materials, making subtle variations in metal condition and weld quality more distinguishable through enhanced color and brightness variations.
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 improves the operator's ability to maintain focus and precision during welding by providing enhanced visibility of the weld area, reducing eye strain and improving the quality of welds through real-time adjustments in lighting conditions.
Implementation Method 1
a light sensor operable to measure the intensity of light incident on the headwear
Data Source
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AI summary
A system comprises light intensity detection circuitry and pixel data processing circuitry. The light intensity detection circuitry is operable to determine whether a welding arc is present based on an intensity of light incident captured by the light intensity detection circuitry, and generate a control signal indicating a result of the determination. A mode of operation of the image processing circuitry may be selected from a plurality of modes based on the control signal. The light intensity detection circuitry may comprise, for example, a passive infrared sensor, a photodiode, and/or circuitry of a camera. The pixel data processing circuitry may comprise, for example, circuitry of a camera, a special purpose graphics processing unit, and/or a general purpose processing unit.