Magnetic Field Sensing via Particle Position in Container
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Solution Overview
Problem
Current magnetic field sensing technologies are limited in their ability to detect magnetic fields in multiple directions efficiently, often requiring replicated sensing structures that increase cost, space, and complexity, and struggle with sensitivity adjustments and power requirements.
Innovation Solution
A system that includes a container with magnetically sensitive particles within a fluid or embedded in a film, where the particles move in response to a magnetic field, and a measurement circuit integrated with the container to output an indication of the magnetic field based on particle position, allowing for omnidirectional detection and adjustable sensitivity without the need for continuous power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple replicated sensing structures are used to detect magnetic fields in multiple directions, then detection capability in multiple directions is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs a single sensing structure containing magnetically sensitive particles that can detect magnetic fields from any direction. The particles are free to move within the container and respond to magnetic field vectors regardless of orientation, enabling one structure to perform the function that would otherwise require multiple replicated structures for different directions.
Solution Approach 2:
The patent transitions from detecting magnetic field components along fixed orthogonal axes using multiple structures to detecting the magnetic field vector in three-dimensional space using particle position and orientation. By measuring particle displacement and alignment in multiple dimensions simultaneously, a single structure achieves omnidirectional detection capability.
2Adaptability or versatility
If multiple replicated sensing structures are used to detect magnetic fields in multiple directions, then detection capability in multiple directions is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs a single sensing structure containing magnetically sensitive particles that can detect magnetic fields from any direction. The particles are free to move within the container and respond to magnetic field vectors regardless of orientation, enabling one structure to perform the function that would otherwise require multiple replicated structures for different directions.
Solution Approach 2:
The patent combines multiple detection functions into a single integrated sensing structure. Instead of manufacturing separate structures for detecting magnetic fields along different axes, the invention merges these functions by using magnetically sensitive particles that respond to magnetic field vectors in three-dimensional space, reducing the total number of components and manufacturing steps.
3Reliability
If traditional magnetic field sensors are used, then magnetic field detection is achieved, but power consumption occurs
Solution Approach 1:
The patent employs magnetically sensitive particles that automatically respond to applied magnetic fields without requiring external power. The particles' magnetic moment causes them to align with and displace in response to the field, and this physical response can be detected by standard sensing techniques, enabling passive magnetic field detection.
Solution Approach 2:
The patent replaces active electronic sensing mechanisms that consume power with a passive mechanical system based on magnetically sensitive particles. The particles' physical displacement and orientation in response to magnetic fields provide the sensing mechanism, eliminating the need for powered components while maintaining detection 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
Enables efficient omnidirectional magnetic field detection, adjustable sensitivity, and zero-power operation, making it suitable for harsh environments and applications requiring precise magnetic field measurement.
Implementation Method 1
The at least one particle moves within the container in response to a magnetic field
Data Source
AI summary
Aspects of this disclosure relate to one or more particles that move within a container in response to a magnetic field. A measurement circuit is configured to output an indication of the magnetic field based on position of the one or more particles.