Hall Sensor Assembly for Rotating Strut Position Detection
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Solution Overview
Problem
Determining the position of a strut in rotating coupling assemblies is challenging due to relative rotation, which can lead to damage if the strut moves to its extended position at inappropriate rotational speeds.
Innovation Solution
A position sensing assembly that includes a magnet creating a magnetic field and a Hall effect transducer within the field, housed in a configuration that allows precise detection of the strut's position through changes in magnetic field strength, enabling accurate identification of the strut's retracted or extended position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a position sensing assembly is implemented to accurately detect strut position, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The position transducer is mounted within a transducer protrusion that extends from the housing body, creating a nested structure where the transducer is housed within the protrusion. This nesting approach allows precise positioning of the sensing elements while maintaining a compact overall structure, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
A magnet is introduced as an intermediary element that creates a magnetic field to enable non-contact position detection of the ferromagnetic strut. This magnetic field mediator allows the transducer to detect strut position without direct mechanical contact, improving measurement precision while avoiding the complexity of mechanical linkages.
2Productivity
If the strut is allowed to extend during high-speed rotation, then productivity is improved, but reliability deteriorates due to potential damage
Solution Approach 1:
The position sensing assembly provides continuous feedback on the strut's position by detecting changes in the magnetic field as the ferromagnetic strut moves. This feedback mechanism enables real-time monitoring of strut position, allowing the system to identify when the strut is in the extended position and prevent operation during high-speed rotation, thus maintaining reliability while enabling productivity improvements when conditions are safe.
Solution Approach 2:
The position sensing assembly detects strut position in advance before critical conditions occur. By continuously monitoring the magnetic field changes that indicate strut position, the system can take preliminary action to prevent extension during high-speed rotation, avoiding damage before it occurs and maintaining both reliability and productivity.
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
Enables reliable and precise determination of the strut's position, preventing damage by ensuring the strut only moves to its extended position when relative rotational speed is below a threshold, thereby maintaining assembly integrity.
Implementation Method 1
A magnet creates a magnetic field
Implementation Method 2
a Hall effect transducer within the field
Data Source
AI summary
A position sensing assembly for sensing a position of a ferromagnetic element. The position sensing assembly includes a magnet creating a magnetic field. A position transducer is disposed within the magnetic field created by the magnet. A housing defines an interior for housing the magnet and the position transducer therein. The housing defines a housing body and a transducer protrusion extending out from the housing body. The position transducer is housed within the transducer protrusion allowing the position transducer to extend out and away from the magnet while maintaining a parallel orientation with the magnet.