Movable Temperature Sensing for Real-Time Weld Quality Control
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Solution Overview
Problem
It is challenging to detect and monitor the temperature of a workpiece near a joint during a welding operation in real-time, making it difficult to determine the quality of the welding process.
Innovation Solution
A welding system equipped with a movable temperature sensor that provides temperature data to a power supply, which processes this information along with operational data to assess the quality of the welding operation, allowing for real-time control adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor is positioned near the welding joint to detect real-time temperatures, then the measurement precision of workpiece temperature is improved, but the device complexity and difficulty of detecting temperature during welding operation increases
Solution Approach 1:
The patent uses an intermediary device (temperature sensor positioned near the joint but not directly in the weld pool) to indirectly measure workpiece temperature. This mediator approach allows temperature detection without requiring direct contact with the high-temperature welding zone, reducing measurement interference while maintaining adequate precision for process control
Solution Approach 2:
The patent replaces complex mechanical temperature measurement systems with electrical/electronic sensing technology. By using electrical resistance temperature detectors or thermocouples coupled with electronic signal processing, the system achieves accurate temperature measurement without the mechanical complexity of direct contact methods in the welding zone
2Reliability
If a movable temperature sensor is used to track workpiece temperature during welding, then the reliability of quality determination is improved, but the ease of operation decreases
Solution Approach 1:
The patent combines the temperature sensor with the welding power supply unit or positioning system into an integrated assembly. This merging allows the sensor to move with the welding operation automatically, maintaining reliable temperature monitoring without requiring separate manual positioning operations, thus preserving ease of operation while ensuring measurement reliability
3Manufacturing precision
If real-time temperature monitoring is implemented during welding, then the manufacturing precision of weld quality is improved, but the productivity decreases due to additional measurement and processing steps
Solution Approach 1:
The patent implements a feedback control system where real-time temperature measurements are continuously fed back to the welding power supply. This feedback enables automatic adjustment of welding parameters (current, voltage, speed) to maintain optimal temperature ranges, ensuring consistent weld quality without requiring manual intervention or slowing down the welding process
Solution Approach 2:
The system performs preliminary temperature monitoring and prediction during the welding process, allowing proactive adjustments before temperature deviations affect weld quality. By anticipating temperature changes based on real-time data and process parameters, the system maintains precision without reactive delays
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 accurate determination and control of the welding quality by monitoring temperatures and other parameters, ensuring the workpiece is within optimal temperature ranges, thereby improving the consistency and quality of the weld.
Implementation Method 1
a movable temperature sensor configured to detect temperatures corresponding to a workpiece
Implementation Method 2
detect temperatures corresponding to a workpiece
Data Source
AI summary
A welding system includes a repositionable temperature sensor. The repositionable temperature sensor is configured to detect temperatures corresponding to a workpiece and to provide temperature data corresponding to the detected temperatures. The welding system also includes a power supply configured to receive the temperature data from the temperature sensor. The power supply is configured to modify control of an output of the power supply based on the detected temperature.