Inductive Sensor Receiver Coil Layout for Compact Series Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inductive sensor arrangements require additional installation space for connecting structures of receiving coils, leading to increased size and complexity, and often use amplifiers with high amplification factors, which can be costly and less robust against electromagnetic interference.
Innovation Solution
The solution involves arranging loop structures of receiving coils in different planes, separating them at design-dependent intersection points, and connecting their ends via internal connecting structures within the receiver structure, allowing for a series connection without external space requirements, enhancing signal-to-noise ratio and electromagnetic compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If connecting structures are arranged outside the receiver structure, then electrical series connection of windings is achieved, but additional installation space is required in the radial direction
Solution Approach 1:
The patent transitions the connecting structures from a radial arrangement (outside the receiver structure) to an axial arrangement (inside the receiver structure). This dimensional change allows the connecting structures to be integrated within the existing radial boundaries of the receiver structure, eliminating the need for additional radial installation space while maintaining the electrical series connection functionality.
Solution Approach 2:
The connecting structures are nested within the receiver structure by arranging them in the axial direction. The connecting structures are positioned between the exciter structure and the receiver structure along the axial axis, effectively nesting them within the existing spatial envelope of the sensor arrangement without requiring additional radial space.
2Power
If amplifiers with high amplification factors are used, then signal amplification is achieved, but cost increases and electromagnetic compatibility decreases
Solution Approach 1:
The patent converts the previously harmful arrangement (connecting structures outside the receiver structure creating space waste and potential interference) into a beneficial configuration by placing them inside. This integration improves electromagnetic compatibility by reducing the antenna effect and minimizing electromagnetic interference, thereby improving signal quality without requiring high-gain amplifiers.
Solution Approach 2:
The patent changes the spatial parameters of the connecting structures from radial to axial positioning, and from outside to inside the receiver structure. This parameter change improves the signal-to-noise ratio and electromagnetic compatibility, allowing the use of lower-gain amplifiers while maintaining or improving overall system performance.
3Volume of moving object
If loop structures are arranged in different planes, then three-dimensional space utilization is improved, but intersection points require separation and connection within the receiver structure
Solution Approach 1:
The patent segments the loop structures into different planes (first and second planes) that are arranged offset from each other in the axial direction. This segmentation allows the loop structures to be clearly separated in space, making the intersection points identifiable and manageable. The connecting structures are then placed at these specific intersection points to electrically connect the series windings, maintaining manufacturing ease despite the three-dimensional arrangement.
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 configuration increases induced voltage, improves signal quality, reduces angle errors, and enables the use of more cost-effective semiconductor amplifiers with lower amplification factors, while maintaining compactness and robustness against electromagnetic interference.
Implementation Method 1
A high frequency current passes through the at least one exciter coil generating an alternating magnetic field, which induces eddy currents in the at least one coupling device
Implementation Method 2
The inductive coupling of the at least one exciter coil and the at least one receiving coil depends on the position of the corresponding coupling device. The induced voltage signal in the at least one receiver coil can be used to infer the current position of the coupling device
Data Source
AI summary
A measured value acquisition device for an inductive sensor arrangement for detecting a rotary movement includes a circuit carrier and a receiver structure which covers a circular ring and includes a receiving coil having at least two windings. A winding of the receiving coil has, in each case, two loop structures with periodically repeating loop sections and is formed in at least two planes of the circuit carrier. Sections of the loop structures arranged in different planes are electrically connected to each other via through-hole platings. The loop structures are arranged offset with respect to each other by a predetermined spacing angle and are each separated at at least one separation point, which is formed within the receiver structure at a design-dependent intersection point of the respective loop structures.