Metallized Conductor Loop for Paramagnetic Oxygen Sensor
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Solution Overview
Problem
Existing magneto-mechanical sensors for paramagnetic gas analysis face challenges in attaching a conductor loop across the non-planar surface of a dumbbell-shaped test piece retained by tensioning wires, making it impractical to deposit electrical lines over the test piece's edges and surfaces.
Innovation Solution
The sensor employs a conductor loop applied via metallization, including vapor deposition, with plated through-holes allowing current lines to pass from one side to the other, and a three-dimensional structure for secure tensioning wire attachment, enabling a compact, lightweight design with reduced production costs and enhanced sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vapor deposition is used to deposit electrical lines over the test piece edges and surfaces, then electrical connectivity can be achieved, but the manufacturing complexity and impracticality increase significantly
Solution Approach 1:
The patent transitions from attempting to deposit conductors across the three-dimensional surface of the test piece to a planar configuration where the conductor loop lies flat on a substrate. This dimensional simplification makes vapor deposition practical and manufacturable while achieving the required electrical connectivity between the tensioning wire and the conductor loop.
Solution Approach 2:
The patent introduces a substrate as an intermediary element that carries the conductor loop. This substrate acts as a mediator between the tensioning wire (which provides mechanical suspension) and the conductor loop (which provides electrical connectivity and magnetic interaction), allowing each component to be optimized independently while ensuring proper integration.
2Stability of the object's composition
If the test piece is retained by tensioning wires in a non-planar configuration, then mechanical stability is improved, but the ability to attach conductor loops becomes more difficult
Solution Approach 1:
The substrate serves as an intermediary that decouples the mechanical suspension function (performed by tensioning wires attached to the test piece) from the electrical function (performed by the conductor loop deposited on the substrate). This allows the tensioning wires to provide stable non-planar support while the conductor loop maintains a simple planar configuration for easy attachment and deposition.
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
This approach results in a sensitive, compact, and cost-effective magneto-mechanical sensor with rapid response times to gas composition changes, as the conductor loop is produced with low weight and small dimensions, facilitating efficient oxygen measurement.
Implementation Method 1
a conductor loop, attached to the test piece, configured to generate a torque thereby stabilizing the test piece during energizing in interaction with the inhomogeneous magnetic field
Implementation Method 2
at least part of the conductor loop, galvanically connected to the tensioning wire, is applied to a surface of the test piece using metallization
Data Source
AI summary
A magneto-mechanical sensor can be use for paramagnetic gas analysis, in which a test piece has a conductor loop is rotatably held by at least one suspension wire. In order to be able to produce the conductor loop, which is to be electrically connected to the at least one suspension wire, with little manual effort and use a small-sized, light-weight sensor, portions of the conductor loop are applied to the surface of the test piece using a metallization process.