Single 3D Magnetic Sensor for Twist and Tilt Control Sticks
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Solution Overview
Problem
Conventional magnetic sensing systems for determining twist and tilt angles of a control stick require multiple magnetic circuits, leading to high costs, significant space consumption, and manufacturing complexity.
Innovation Solution
A single three-dimensional magnetic sensor is used, with a magnet mounted in the control stick's handle, detecting twist angles based on the strength of the magnetic field and tilt angles based on the ratio of magnetic field components, reducing the need for multiple magnetic circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple magnetic circuits are used to detect twist and tilt angles, then measurement precision is improved, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent combines multiple magnetic circuits into a single integrated magnetic sensor that can detect both twist and tilt angles simultaneously. The magnetic sensor includes multiple sensing elements arranged to detect magnetic field components in different directions, eliminating the need for separate magnetic circuits while maintaining detection precision.
Solution Approach 2:
The single magnetic sensor is designed to perform multiple functions: detecting both twist angles and tilt angles. The sensor includes sensing elements that can measure magnetic field components along different axes, allowing one device to replace multiple specialized circuits.
2Measurement precision
If multiple magnetic circuits are used to detect twist and tilt angles, then measurement precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent integrates multiple magnetic sensing functions into a single sensor component, reducing the number of separate parts that need to be manufactured and assembled. This consolidation simplifies the manufacturing process while maintaining the capability to detect both twist and tilt angles with high precision.
Solution Approach 2:
The magnetic sensor is divided into multiple sensing elements or channels within a single integrated structure. Each sensing element detects magnetic field components in specific directions, and the results are processed to determine both twist and tilt angles. This segmentation within integration allows precise angle detection while simplifying manufacturing compared to separate circuits.
3Measurement precision
If multiple magnetic circuits are used to detect twist and tilt angles, then measurement precision is improved, but area consumption increases
Solution Approach 1:
The patent merges multiple magnetic circuits into a single compact magnetic sensor, dramatically reducing the space required for angle detection components. The integrated sensor occupies minimal area while maintaining the precision of multiple separate circuits through its multi-element design.
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 solution reduces the cost, area consumption, and complexity of the control stick while maintaining accurate twist and tilt angle detection, enabling efficient control functions in applications like drone or vehicle control.
Implementation Method 1
a magnet (e.g., mounted or housed in a handle of the control stick) and a magnetic sensor (e.g., a three-dimensional (3D) magnetic sensor) to determine the twist angle of the handle of the control stick based on a strength of a magnetic field
Data Source
AI summary
A control stick may include a magnet and a three-dimensional (3D) magnetic sensor. The 3D magnetic sensor may determine a twist angle of a handle of the control stick based on a strength of a magnetic field at the 3D magnetic sensor. A twisting of the handle may modify an air gap between the 3D magnetic sensor and the magnet. The strength of the magnetic field may be based on strengths of first, second, and third magnetic field components. The 3D magnetic sensor may determine a tilt angle of the handle based on a ratio of the strength of the first magnetic field component to the strength of the third magnetic field component. A tilting of the handle in a direction corresponding to the first magnetic field component may modify the ratio of the strength of the first magnetic field component to the strength of the third magnetic field component.