Welding Power Supply Refueling Detection Near the Fuel Tank
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional engine-driven welding-type power supplies face challenges in refueling, as the fuel tank is often positioned away from the front panel, making it difficult for operators to accurately refill due to the inoperability of the front panel fuel gauge when the power supply is turned off, leading to potential underfilling or overfilling.
Innovation Solution
A refueling detection system that operates independently of the power supply's on/off state, using sensors and output devices positioned near the fuel tank to provide real-time fuel level indications, ensuring accurate refueling even when the power supply is turned off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fuel tank is positioned away from the front panel, then the refueling operation can be performed, but the fuel gauge becomes invisible to the operator and the refueling detection system cannot operate
Solution Approach 1:
The system divides the fuel level indication function into two separate locations: a front panel fuel gauge for general operation and a refueling detection system with output devices positioned near the fuel tank inlet for refueling operations. This segmentation allows each location to serve its specific purpose effectively.
Solution Approach 2:
The refueling detection system acts as an intermediary between the fuel tank and the operator during refueling operations. It provides intermediate feedback about fuel level at the refueling location, enabling the operator to make informed decisions without needing to see the front panel gauge.
2Reliability
If the power supply is turned off during refueling, then safety is improved, but the fuel gauge and refueling detection system become inoperative
Solution Approach 1:
The refueling detection system is designed to be activated automatically when the power supply is turned off or when refueling conditions are detected. This preliminary preparation ensures that fuel level information is available exactly when needed during refueling operations, eliminating the need to keep the power supply on.
Solution Approach 2:
The system dynamically adapts its operation mode based on the power supply state. When the power supply is off, the refueling detection system uses stored power to operate independently. When the power supply is on, it coordinates with the main power system. This dynamic behavior allows the system to maintain fuel level monitoring capability across different operational states.
3Device complexity
If manual estimation of fuel levels is used, then the system complexity is reduced, but the refueling accuracy deteriorates
Solution Approach 1:
The system replaces manual visual estimation with automated sensor-based detection. Fuel level sensors automatically measure the fuel level and provide quantitative data to the refueling detection system, eliminating the need for operators to manually estimate fuel levels and improving measurement precision.
Solution Approach 2:
The refueling detection system performs self-service by automatically detecting fuel levels and providing feedback to the operator. This automated function reduces the cognitive load on the operator and provides more accurate measurements than manual estimation, while adding minimal complexity to the overall system.
Data Source
AI summary
Described herein are examples of welding-type power supplies with refueling detection systems that use provide user perceptible outputs from refueling output devices proximate the fuel tank (and/or fuel tank inlet), so that the output can be perceived by the operator when refueling. The outputs may indicate how much fuel is in the fuel tank, and/or whether the fuel tank has been filled to capacity, so the operator knows when to stop refueling. The refueling detection system is additionally configured to operate even when the power supply is turned off, in case the power supply is turned off prior to refueling (as is the best practice).