Oil Condition Determination via Dynamic Resistance Thresholds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oil condition determination systems struggle to accurately assess oil condition when partial replacement or addition occurs, as resistance value changes disrupt the determination criterion.
Innovation Solution
An oil condition determination system that periodically measures resistance values, stores local maximum values, and updates threshold values based on significant changes, ensuring continuous and accurate condition assessment by initializing local maximum values and adjusting criteria when oil is partially replaced or added.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed threshold value is used to determine oil condition based on resistance value, then the determination criterion is simple, but the accuracy deteriorates when oil is partially replaced or added
Solution Approach 1:
The threshold value is changed from a fixed parameter to a dynamic parameter that automatically adjusts based on the resistance value change rate. When the change rate exceeds a second threshold, the first threshold value is updated, allowing the determination criterion to adapt to different operational states including oil replacement scenarios
Solution Approach 2:
The system changes the threshold parameter based on the measured resistance value trend. When the resistance value changes rapidly (indicating possible oil replacement), the threshold value is updated to reflect the new baseline, thereby maintaining determination accuracy under varying conditions
2Measurement precision
If the determination criterion is updated frequently to adapt to oil changes, then the accuracy is improved, but the system complexity increases
Solution Approach 1:
The system uses feedback from the resistance value measurement to control threshold updates. The threshold value is updated only when the resistance change rate exceeds a second threshold, creating a feedback-controlled adaptation mechanism that balances accuracy with system simplicity
Solution Approach 2:
The system prepares for potential oil replacement scenarios by continuously monitoring the resistance value change rate and pre-updating the threshold value before actual oil condition determination is affected, ensuring readiness without complex real-time adjustments
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 continuous and proper determination of oil condition even during partial replacement or addition, preventing inappropriate notifications and ensuring timely oil replacement.
Implementation Method 1
a measurement unit configured to periodically measure a resistance value of the oil
Data Source
AI summary
Provided are an oil condition determination system and an oil condition determination method that are capable of continuously determining the oil condition when oil is partially replaced or oil is added. An oil condition determination system includes a measurement unit and a determination unit. The measurement unit periodically measures a resistance value of oil. The determination unit periodically determines a condition of the oil based on the resistance value, stores a local maximum value of the resistance value, determines that the condition of the oil has changed when a difference between the local maximum value and the resistance value becomes greater than or equal to a first threshold value, and initializes the local maximum value and updates the first threshold value when the amount of change in the resistance value per unit time becomes greater than or equal to a second threshold value.