Torch Power Indicator Using Segmented Control Signals
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Solution Overview
Problem
Welding and plasma cutting operators face challenges in determining the availability of power at the torch, as they may not be close enough to the power supply or unable to view it, necessitating a method to provide power availability information from the welding or plasma cutting power supply.
Innovation Solution
A welding or plasma cutting torch with an integrated indicator and control circuitry that provides signals to indicate the availability of welding power and arc starting power, using visual, auditory, or tactile feedback to inform the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the operator looks at the power supply display to determine power availability, then the operator can obtain power status information, but the operator must be close enough to the power supply and able to view it
Solution Approach 1:
The power status information display is segmented from the main power supply unit and distributed to multiple locations including the torch and remote positions. This allows the operator to view power status at the torch or other convenient locations without needing to be near the main power supply display.
Solution Approach 2:
Additional indicator devices are introduced as intermediaries between the power supply and the operator. These indicators are placed at the torch and/or at remote positions to convey power status information to the operator without requiring direct viewing of the main power supply display.
2Loss of information
If the operator stands close to the power supply to view power status, then the operator can see the display, but the operator cannot simultaneously perform welding operations at a distance
Solution Approach 1:
The power status indication function is segmented and distributed to multiple locations including the torch and remote positions, allowing the operator to view power status from any location without needing to move to the power supply.
Solution Approach 2:
The torch is given multiple functions: it serves as both the welding tool and a power status display location. The indicator at the torch provides power status information while the operator performs welding operations from the same location, eliminating the need to move between positions.
3Ease of operation
If no local indicator is provided at the torch, then the power supply design is simpler, but the operator cannot determine power availability at the torch location
Solution Approach 1:
The indication system is segmented into multiple independent indicator devices located at different positions (torch, remote positions). Each indicator is a relatively simple component that provides power status information locally, distributing the complexity across multiple simple elements rather than requiring a complex centralized system.
Solution Approach 2:
Simple indicator devices are introduced as intermediaries to convey power status information from the power supply to the operator at the torch location. These indicators act as mediators that translate power status into visible signals without requiring complex communication systems.
Data Source
AI summary
Devices and methods for indicating power on a torch. In one example, a welding or plasma cutting torch includes an indicator coupled to the torch. The torch also includes control circuitry coupled to the indicator and configured to provide a first signal and a second signal to the indicator. The indicator is configured to receive the first signal when at least one of welding power and arc starting power from a power supply is available at the torch and to receive the second signal when the at least one of active welding power and the arc starting power from the power supply is not available at the torch.