Sensor Device Wireless Coupling Hermetic Sealing
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Solution Overview
Problem
Existing sensor devices face sealing challenges when measuring media with low viscosity, particularly due to issues with wired connections, which can lead to inaccurate detection of impurities and contamination in media.
Innovation Solution
A sensor device with an open measuring capacitor and coupling capacitors, where the inner space is sealed by a wall made of electrically insulating material, ensuring hermetic sealing and allowing wireless coupling, enabling effective detection of medium properties without sealing problems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used to connect the measuring capacitor, then electrical connection is achieved, but sealing problems occur leading to inaccurate detection
Solution Approach 1:
The patent replaces wired mechanical/electrical connections with wireless electromagnetic coupling. The measuring capacitor is electrically connected to the evaluation device through electromagnetic fields without physical wire penetration, eliminating the sealing problems that would otherwise occur at connection points while maintaining reliable electrical connection for accurate detection
Solution Approach 2:
The patent introduces a coupling capacitor as an intermediary element that enables electrical connection between the measuring capacitor and evaluation device through electromagnetic coupling without direct wire penetration. This intermediary allows signal transmission while maintaining the hermetic seal of the housing
2Reliability
If the inner space is hermetically sealed, then sealing reliability is improved for low viscosity media, but electrical connection becomes more difficult
Solution Approach 1:
The patent replaces complex wired connection systems that would compromise sealing with simple wireless electromagnetic coupling. The measuring capacitor and evaluation device communicate through electromagnetic fields, maintaining hermetic sealing while reducing connection complexity
Solution Approach 2:
The patent extracts the electrical connection function from the physical housing structure by using electromagnetic coupling through the housing wall. This allows the housing to maintain its simple hermetic seal without requiring complex connection mechanisms
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
The sensor device effectively measures properties of media, including small amounts of impurities, by ensuring a hermetic seal and maximizing capacitance, allowing for precise detection of changes in dielectric properties, even in media with low viscosity.
Implementation Method 1
measure changes in capacitance of a capacitor due to a change in the dielectric properties of the medium caused by impurities
Implementation Method 2
measure changes in capacitance of a capacitor due to a change in the dielectric properties of the medium
Data Source
AI summary
Aspects relate to a sensor device 1 and a method for detecting properties of a medium having an inner space bounded by a wall. An open measuring capacitor is arranged in the inner space. A coupling capacitor with at least two coupling capacitor areas is arranged on the wall in such a way that at least a part of the wall is arranged between an inner coupling capacitor area and an outer coupling capacitor area. The inner coupling capacitor area is connected to the measuring capacitor 10.