Multi-Axis RF Magnetic Sensor for Omnidirectional Signal Detection
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Solution Overview
Problem
Existing magnetic sensors struggle to detect weak magnetic field communication signals in extreme environments such as underwater or underground settings with high noise robustness and require omnidirectional detection capabilities for extended communication ranges.
Innovation Solution
Development of two-axis and three-axis RF magnetic sensors with protective casings and specific coil configurations to enhance sensitivity and directionality, enabling detection from all directions and increasing transmission distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If single-axis magnetic sensors are used, then the device complexity is low, but the detection capability is limited to specific directions only
Solution Approach 1:
The magnetic sensor is divided into multiple sensing elements arranged along different axes (first axis, second axis, and optionally third axis). Each sensing element detects magnetic field components in its respective direction, and the combined output enables omnidirectional detection capability while maintaining manageable complexity through modular segmentation.
Solution Approach 2:
The sensor transitions from single-axis (one-dimensional) detection to multi-axis (two-dimensional or three-dimensional) detection by adding sensing elements along perpendicular axes. This dimensional expansion enables omnidirectional detection capability without exponentially increasing complexity, as each axis operates independently.
2Length of stationary object
If magnetic sensors are used in extreme environments, then the communication range can be extended, but the noise resistance becomes insufficient
Solution Approach 1:
Protective casings are introduced as intermediary structures that shield the magnetic sensing elements from external noise sources in extreme environments. These casings act as mediators between the sensitive sensing elements and the harsh external environment, enabling extended communication range while maintaining noise resistance through physical isolation.
3Measurement precision
If ultra-high sensitivity sensors are used, then the detection sensitivity reaches pico-tesla range, but the device complexity increases
Solution Approach 1:
Multiple magnetic sensing elements are combined into a single integrated sensor system that achieves ultra-high sensitivity in the pico-tesla range. By merging multiple sensing elements and their signal processing pathways into one unified device, the system achieves high measurement precision while managing device complexity through integration rather than separate components.
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
The sensors achieve ultra-high sensitivity and robust noise resistance, allowing for medium-to-long distance magnetic field communication in extreme environments.
Implementation Method 1
radio frequency (RF) magnetic sensor for magnetic field communication... capable of detecting RF communication signals in all directions... ultra-high sensitivity characteristics of these RF magnetic sensors are essential... sensitivity levels in a pico-tesla range
Data Source
AI summary
A radio frequency (RF) magnetic sensor for magnetic field communication may comprise: a first RF magnetic sensor; a second RF magnetic sensor; a first inner protective case into which the first RF magnetic sensor is inserted and with which the first RF magnetic sensor is combined; a second inner protective case into which the second RF magnetic sensor is inserted and with which the second RF magnetic sensor is combined; a fixing jig in which the first inner protective case is coupled by penetrating in a first direction, and the second inner protective case is coupled by penetrating in a second direction perpendicular to the first direction; and an outer case for protecting the fixing jig by enclosing the fixing jig inside.