Adjustable Electrode Sensor for Abrasion Powder Detection
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Solution Overview
Problem
Existing sensors are not adaptable to mechanical devices of various sizes, making it difficult to accurately detect the amount of abrasion powder in lubricants for preventive maintenance, as the amount of abrasion powder generated varies significantly with device size.
Innovation Solution
A sensor design featuring adjustable electrodes with replaceable options and adjustable distances between them, along with a magnetic system to accumulate and detect conductive substances, allowing for customization to fit different-sized mechanical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed-size sensor is designed for a specific mechanical device, then the sensor can accurately detect abrasion powder for that device size, but the sensor cannot be adapted to mechanical devices of other sizes
Solution Approach 1:
The sensor employs adjustable electrodes that can be positioned at different distances from each other, transforming a static sensor design into a dynamic one. This allows the sensing gap to be adjusted according to the size of the mechanical device being monitored, enabling the same sensor to accurately detect abrasion powder across various device sizes while maintaining detection precision.
Solution Approach 2:
The sensor allows changing the physical parameter of electrode spacing to adapt to different application scenarios. By adjusting the distance between electrodes, the sensor can be configured for different mechanical device sizes, thus changing the sensor's operational parameters to achieve both precision and versatility.
2Measurement precision
If custom sensors are designed for each mechanical device size, then detection accuracy is optimized for each device, but the complexity of sensor design and development increases
Solution Approach 1:
The sensor design incorporates universal components with adjustable features, allowing a single sensor model to serve multiple mechanical device sizes. The adjustable electrodes and replaceable electrode sets enable one sensor design to function across various applications, reducing the need to develop custom sensors for each device size while maintaining optimized detection accuracy.
Solution Approach 2:
The sensor is divided into modular components, particularly the electrode assemblies that can be independently adjusted or replaced. This segmentation allows users to configure the sensor for different device sizes by simply changing the electrode positioning or replacing electrode sets, rather than redesigning the entire sensor, thus reducing design complexity.
3Device complexity
If the electrode gap is fixed, then the sensor structure is simpler, but the sensor cannot be adapted to different mechanical device sizes
Solution Approach 1:
The sensor structure incorporates adjustable electrode positioning mechanisms that allow the electrode gap to be dynamically changed. This dynamic capability enables the sensor to adapt to different mechanical device sizes without requiring completely different sensor designs, achieving versatility while maintaining relatively simple overall structure through modular adjustment mechanisms.
Solution Approach 2:
Instead of making the entire sensor structure complex and adjustable, only the critical electrode gap portion is made adjustable while the rest of the sensor structure remains simple. This partial action approach provides the necessary adaptability for different device sizes without unnecessarily complicating the overall sensor design.
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 detection of abrasion powder in mechanical devices of any size, facilitating tailored preventive maintenance by selecting appropriate gap lengths and configurations based on the device's failure rate curve, ensuring effective maintenance across diverse mechanical parts.
Implementation Method 1
a sensor head having a permanent magnet; a cup-shaped electrode provided on a distal end surface of the sensor head; and a plurality of rod-shaped conductive members arranged on an outer peripheral surface of the sensor head. The '324 Publication describes that an output of the sensor is varied when a short circuit occurs between rod-shaped conductive members due to the abrasion powder accumulated between opposed end surfaces of the conductive members (a sensing region) and the cup-shaped electrode subjected to a magnetic field by a permanent magnet
Implementation Method 2
to sense a change in electric resistance between the first and second electrodes... to sense a degree of contamination of the oil
Data Source
AI summary
Provided is a sensor that can appropriately sense the amount of abrasion powder (conductive substance) in a mechanical device of any size, and thereby to provide a sensor that can be generally used for preventive maintenance of any mechanical parts. The sensor includes a first electrode and a second electrode. A voltage is applied between the first electrode and the second electrode to accumulate conductive substance between the first and second electrodes in order to sense a decrease in electric resistance between the first and second electrodes. The distance between the first electrode and the second electrode is adjustable.