Inductive Position Sensing With a Passive Target Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inductive position measuring devices require separate power supplies and data connections for both movable and stationary assemblies, leading to a complex configuration.
Innovation Solution
An inductive position measuring device where only the first assembly is connected to an active power supply and data processing, while the second assembly operates passively, with field interaction devices arranged to determine position and orientation in multiple degrees of freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both movable and stationary assemblies use electrical components connected to active electronics, then position measurement function is achieved, but device complexity increases significantly
Solution Approach 1:
The patent extracts the active electronics and power supply from the stationary assembly, leaving only passive field interaction devices in the stationary assembly and active electronics in the movable assembly. This separation eliminates the need for power connections and active electronics in the stationary assembly, significantly reducing configuration complexity while maintaining position measurement functionality through electromagnetic field interactions.
Solution Approach 2:
The stationary assembly's field interaction devices operate passively by utilizing electromagnetic fields generated by the movable assembly's active devices. The system allows the stationary assembly to serve itself without requiring external power connections or active electronics, as the electromagnetic fields naturally interact with the passive receivers to provide position information.
2Adaptability or versatility
If both assemblies have power supply and data connection, then complete functionality is achieved, but manufacturing cost and production complexity increase
Solution Approach 1:
The patent removes power supply components and active electronics from the stationary assembly, extracting only the necessary passive field interaction devices. This reduction in components directly lowers manufacturing cost and production complexity, as fewer parts need to be assembled and calibrated in the stationary assembly while maintaining complete functionality through the remaining electromagnetic interaction mechanisms.
3Ease of operation
If stationary assembly uses active electronics and power supply, then data processing capability is achieved, but configuration complexity increases
Solution Approach 1:
Instead of placing active electronics and power supply in the stationary assembly for data processing, the patent inverts the arrangement by placing all active electronics in the movable assembly. The stationary assembly contains only passive receivers that collect electromagnetic field data, which is then processed by the active electronics in the movable assembly. This inversion reduces configuration complexity in the stationary assembly while maintaining data processing capability.
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
Simplifies the configuration by eliminating the need for power and data connections in the stationary assembly, allowing for efficient and cost-effective position determination in six degrees of freedom.
Implementation Method 1
The first and second field interaction devices can be brought into electromagnetic interaction
Data Source
AI summary
An inductive position measuring device includes a first assembly having a first interaction surface and a second assembly having a second interaction surface. The two assemblies are arranged opposite each other in a third measurement direction and are movable relative to each other. The first assembly includes multiple first field interaction devices arranged parallel to the first interaction surface. The second assembly includes multiple second field interaction devices arranged in a flat manner distributed over the second interaction surface. At least one first field interaction device is arranged along a first measurement direction, at least one further first field interaction device is arranged along a second measurement direction, and each first field interaction device includes at least one excitation device and at least one receiver.