Current Sensor Conductor Rift Layout for Uniform Magnetic Coupling
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Solution Overview
Problem
Current sensor systems face challenges in achieving uniform magnetic coupling coefficients, which are sensitive to manufacturing tolerances and placement errors, leading to variations in current measurement accuracy and requiring post-manufacturing calibration.
Innovation Solution
The design incorporates a substrate with conductive layers forming a conductor that includes a rift, allowing for a current sensor to be mounted above the rift, resulting in a substantially uniform magnetic coupling coefficient across different mounting locations, reducing sensitivity to placement errors and eliminating the need for custom calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional conductors without rifts are used, then the structure is simple and manufacturing is easier, but the magnetic coupling coefficient varies significantly with placement position, requiring post-manufacturing calibration
Solution Approach 1:
The conductor is segmented into multiple conductive layers with a rift (discontinuity) introduced in at least one layer. This segmentation creates a controlled magnetic field distribution that improves measurement precision while managing structural complexity through systematic layering
Solution Approach 2:
The rift is positioned at a specific location within the conductor structure to create localized magnetic field characteristics. This local modification ensures uniform magnetic coupling coefficient in the sensing region without requiring complete restructuring of the entire conductor
2Reliability
If conventional conductors without rifts are used, then manufacturing process is simpler, but placement errors lead to variations in magnetic coupling coefficient
Solution Approach 1:
The rift is pre-designed and integrated into the conductor structure during manufacturing, before the sensor placement. This preliminary action ensures that the magnetic coupling characteristics are optimized in advance, making the system robust against placement variations without complicating the overall manufacturing process
3Ease of operation
If uniform magnetic coupling coefficient is achieved through rift design, then placement tolerance requirements are relaxed, but the conductor requires multiple layers and rift formation steps
Solution Approach 1:
The solution moves from a two-dimensional planar conductor to a three-dimensional multi-layer structure with vertical stacking. By introducing the rift in the vertical dimension across multiple layers, the system achieves uniform magnetic coupling and relaxed placement tolerances while managing complexity through standardized layer configurations
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 enhances the accuracy and reliability of current measurements by ensuring consistent magnetic coupling, regardless of manufacturing tolerances and placement inaccuracies, thereby improving the overall performance and reducing calibration requirements.
Implementation Method 1
one or more first conductive layers; one or more second conductive layers that are electrically coupled to the first conductive layers, the first conductive layers and the second conductive layers being arranged to form a conductor
Implementation Method 2
the first conductive layers being configured to define a respective rift in the conductor; the respective rift in any of the plurality of conductors is arranged to cause an area directly above the respective rift to have a substantially uniform magnetic coupling coefficient
Data Source
AI summary
A substrate, comprising one or more first conductive layers, one or more second conductive layers, and a dielectric material that is arranged to encapsulate, at least in part, the first conductive layers and the second conductive layers. The one or more second conductive layers are electrically coupled to the first conductive layers. The first conductive layers and the second conductive layers are arranged to form a conductor. The first conductive layers are arranged to define a first rift in the conductor.