Workpiece Orientation Detection for Portable Welding Feedback
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Solution Overview
Problem
It can be difficult for less experienced human operators to accurately judge whether their welding technique is good or bad, which can negatively impact the quality of welds.
Innovation Solution
A portable welding technique monitoring system that includes a positioning stand with an adjustment mechanism, a workpiece holder, an orientation sensor, and processing circuitry to determine and adjust the workpiece orientation, using inertial measurement units and mobile devices for real-time feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If portable sensors and mobile devices are used for welding technique monitoring, then device complexity and cost are reduced, but measurement precision may be compromised
Solution Approach 1:
The patent combines multiple sensors (accelerometers, gyroscopes, magnetometers) into a single integrated IMU unit mounted on the positioning stand. This merging of sensing capabilities allows the portable system to achieve comprehensive orientation detection (pitch, roll, yaw angles) while maintaining compactness and portability, resolving the contradiction between system simplicity and measurement precision.
Solution Approach 2:
The patent introduces a mobile device (smartphone or tablet) as an intermediary component that houses the IMU sensor and processing circuitry. This intermediary serves as a bridge between the simple portable hardware and the complex measurement requirements, enabling precise workpiece orientation detection through consumer-grade sensors while keeping the overall system portable and affordable.
2Manufacturing precision
If real-time orientation feedback is provided to operators, then welding technique accuracy is improved, but information processing requirements increase
Solution Approach 1:
The patent implements a real-time feedback system where the mobile device continuously monitors workpiece orientation through the IMU sensor and provides immediate visual feedback to the operator via the display screen. The system compares actual orientation angles with target angles and guides operators to achieve optimal positioning, thereby improving welding technique accuracy without requiring complex dedicated processing hardware.
Solution Approach 2:
The patent leverages the multi-functionality of mobile devices, which already possess IMU sensors, processors, displays, and user interfaces for other purposes. By repurposing these existing components for welding orientation monitoring, the system achieves real-time feedback capability without adding dedicated complex processing circuitry, thus improving manufacturing precision while avoiding increased device complexity.
3Manufacturing precision
If adjustable positioning stands with orientation sensors are used, then workpiece orientation control is improved, but device complexity and portability are reduced
Solution Approach 1:
The patent employs dynamically adjustable positioning stands that can be easily reconfigured for different workpiece orientations. The stands incorporate adjustable arms and clamps that allow operators to position workpieces at various angles, while the IMU sensor automatically detects and measures the actual orientation. This dynamic adjustability provides precise orientation control without requiring complex fixed positioning mechanisms, maintaining portability while improving manufacturing precision.
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 provides low-cost, user-friendly, and portable monitoring that enhances welding technique accuracy by guiding operators to achieve optimal workpiece orientation, improving weld quality.
Implementation Method 1
an orientation sensor configured for connection to the positioning stand such that a sensor orientation of the orientation sensor will change when the positioning stand orientation changes, the orientation sensor being configured to capture orientation sensor data relating to the positioning stand orientation
Data Source
AI summary
In some examples, portable technique monitoring systems provide lightweight, user-friendly, self-contained, and/or highly portable means of monitoring the technique of operators during a welding-type operation, and/or providing technique feedback. In some examples, a portable technique monitoring system is designed to work with a mobile device that is relatively low cost and highly portable (e.g., as compared to some other expensive and/or stationary sensors/processors used in other monitoring systems). The portable technique monitoring system can also work with standard and/or common workpieces, tools, and/or equipment. The few custom components that are required for the portable technique monitoring system are relatively low cost, lightweight, and highly portable, as is the system itself, making it a very attractive solution for technique monitoring in both training and production scenarios.