Proximity Sensor Welding Power Control for Idle Energy Reduction
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Solution Overview
Problem
Existing welding systems lack an efficient means to dynamically switch between energy conservation and operation modes, leading to suboptimal energy efficiency.
Innovation Solution
A welding system equipped with a proximity sensor that adjusts engine operation mode based on the operator's presence, enabling dynamic switching between energy conservation and operation modes using touch sensors or RFID technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the engine operates at full power to maintain maximum welding current output capability, then the welding system can provide sufficient power for high-current operations, but energy consumption increases significantly
Solution Approach 1:
The engine operating speed is dynamically adjusted based on the operator's presence detected by the proximity sensor. When the operator approaches or touches the user manipulatable device, the engine transitions to a higher operating speed capable of delivering maximum welding current. When the operator is absent, the engine reduces to a lower operating speed, significantly reducing energy consumption while maintaining readiness to quickly transition back to full power when needed.
2Use of energy by moving object
If the engine operates at reduced power to conserve energy, then energy efficiency improves, but the welding system cannot provide sufficient power when needed
Solution Approach 1:
The system performs preliminary action by detecting the operator's approach or contact with the user manipulatable device through the proximity sensor. Upon detection, the system proactively increases the engine operating speed to the higher level required for maximum welding current output, ensuring sufficient power is available before the welding operation begins, rather than waiting for power demand to arise.
Solution Approach 2:
The proximity sensor provides continuous feedback about the operator's presence or absence to the control system. This feedback loop enables the system to automatically adjust the engine operating speed in real-time, transitioning between lower and higher operating speeds based on whether the operator is present and ready to perform welding, thus maintaining energy efficiency while ensuring adequate power availability when needed.
3Use of energy by moving object
If the engine is shut down completely when not in use, then energy consumption is minimized, but the system takes time to restart and may not be immediately ready for operation
Solution Approach 1:
Instead of completely shutting down the engine, the system maintains a local quality of partial operation by keeping the engine running at a lower operating speed when the operator is absent. This partial operation state consumes significantly less energy than full-power operation but maintains the engine in a ready state, eliminating startup time delays while still achieving substantial energy savings compared to continuous full-power operation.
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
Maximizes energy efficiency by automatically transitioning to energy conservation mode when the operator is not using the welding equipment, reducing power consumption and maintaining operational readiness.
Implementation Method 1
a proximity sensor positioned on the user manipulatable device, the proximity sensor being configured to provide a first output signal when an operator of the welding system is in-range
Data Source
AI summary
A welding system comprising a user manipulatable device, a proximity sensor positioned on said user manipulatable device, an engine capable of operation in an energy conservation mode and an operating mode, and a generator operatively coupled to the engine. The generator may provide at least one of (1) a welding current output or (2) an auxiliary power output. The engine may operate (1) in the operating mode when the proximity sensor outputs the first output signal, and (2) in the energy conservation mode when the engine is not operating in the operating mode. The proximity sensor may be configured to output the first output signal when an operator of said welding system is in-range.