Bistable Magnet Arrangement for Compact Voltage Pulse Generation
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Solution Overview
Problem
Existing devices for generating voltage pulses during shaft rotation are bulky, making them inefficient in terms of space usage.
Innovation Solution
The device configures the north-south direction of magnet arrangements transversely or parallel to the axis of rotation, incorporating a voltage-generating device that produces a pulse when the magnet arrangement changes positions, utilizing coils, capacitors, or piezo elements, and a bistable holding device for space-saving and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first magnet arrangement and a second magnet arrangement are used with bistable holding positions spaced along the axis of rotation, then voltage pulses can be generated during shaft rotation, but the device becomes comparatively bulky
Solution Approach 1:
The patent reorients the magnetic field generation from an axial arrangement to a radial arrangement. The north-south direction of the magnet arrangements runs transversely to the axis of rotation, allowing the magnetic fields to interact in a radial dimension rather than requiring axial spacing. This dimensional change enables compact device volume while maintaining voltage pulse generation capability.
Solution Approach 2:
The patent combines the functions of multiple magnet arrangements into a single integrated magnet arrangement on the rotating shaft. Instead of requiring separate first and second magnet arrangements spaced along the axis, a single magnet arrangement with transverse north-south direction performs both magnetic field generation and voltage pulse induction, merging multiple components into one compact unit.
2Volume of moving object
If magnet arrangements are oriented with north-south direction transversely to the axis of rotation, then device volume is reduced, but the magnetic field interaction must be precisely configured
Solution Approach 1:
The patent applies local quality by configuring the magnet arrangement with specific north-south orientation transversely to the rotation axis. This localized directional configuration ensures that the magnetic field interacts effectively with the voltage-generating device at the specific location where the magnet passes, achieving precise magnetic field interaction without requiring complex overall device configuration.
Solution Approach 2:
The patent changes the orientation parameter of the magnet arrangement from axial to transverse relative to the rotation axis. This parameter change in the north-south direction orientation simplifies the geometric configuration and reduces the need for complex positioning mechanisms, thereby reducing manufacturing precision requirements while maintaining effective magnetic field interaction.
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 results in a compact design that effectively generates voltage pulses with minimal space requirements, allowing for secure attachment and efficient signal processing, reducing the need for additional elements and enhancing the device's operational efficiency.
Implementation Method 1
the voltage generating device can comprise a coil and the first magnet arrangement can have a different distance from the coil in the second holding position than in the first holding position. This makes it possible to generate the voltage pulse in a simple manner, since the different distances between the magnet arrangement lead to the induction of a voltage in the coil.
Implementation Method 2
the voltage generating device can have at least one piezo element, in which a voltage is generated by changing a dimension, for example a length.
Data Source
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AI summary
The invention relates to a device for generating a voltage pulse during rotation of a shaft rotatably mounted about an axis of rotation, comprising a first magnet arrangement and a second magnet arrangement rotatable about the axis of rotation relative to the first magnet arrangement, wherein the first magnet arrangement is held bistable and has a first stable holding position and a second stable holding position spaced apart from the first holding position along the axis of rotation, wherein a north-south direction of the first magnet arrangement and/or the second magnet arrangement runs transversely to the axis of rotation.