Valve Angle Detection Using Biaxial Hall Sensors and ML
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Solution Overview
Problem
Existing systems fail to detect rotational movements of valve components using Hall sensors, limiting their ability to determine the angular position of a valve tappet and valve closing elements.
Innovation Solution
A method and system utilizing a magnetic signal generator with a magnet polarized to change magnetic field strength upon rotation, combined with at least biaxial Hall sensors generating multiple measurement signals in different directions, and a control unit for angular position determination through machine learning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If axial displacement measuring systems with Hall sensors are used to detect valve tappet position, then axial movement detection is achieved, but rotational movement detection is not possible
Solution Approach 1:
The patent transitions from detecting only axial displacement to detecting rotational movement by utilizing the third spatial dimension. The Hall sensor is positioned to detect magnetic field changes in the radial direction as the signal generator rotates, enabling angular position measurement while maintaining axial movement detection capability.
Solution Approach 2:
The system changes the measurement parameter from purely axial displacement to include radial magnetic field strength variations. By monitoring changes in magnetic field strength caused by rotational movement of the signal generator, the system achieves angular position detection alongside axial position measurement.
2Measurement precision
If a magnet is polarized to change magnetic field strength upon rotation, then rotational position can be detected, but the system complexity increases
Solution Approach 1:
The signal generator with the specially polarized magnet serves multiple functions: it enables both axial displacement measurement (through its position relative to the Hall sensor) and rotational position detection (through magnetic field strength changes during rotation). This multi-functionality reduces the need for separate sensing systems.
Solution Approach 2:
The magnetic field acts as an intermediary that translates rotational mechanical movement into detectable electrical signals. The Hall sensor detects changes in magnetic field strength caused by rotation, converting mechanical angular position into an electrical measurement without requiring direct mechanical contact or complex encoders.
3Measurement precision
If biaxial Hall sensors generating multiple measurement signals are used, then accurate angular position determination is achieved, but the device complexity increases
Solution Approach 1:
The biaxial Hall sensor is divided into two independent measurement components (first and second measuring directions). Each component generates a separate measurement signal that corresponds to the magnetic field strength in its respective direction. This segmentation allows the system to capture two-dimensional magnetic field variations, enabling accurate calculation of angular position through coordinate transformation algorithms.
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 accurate and rapid detection of rotational movements and angular positions of valve components, allowing precise control of valve opening states.
Implementation Method 1
at least one at least biaxial Hall sensor which is configured to generate at least two measurement signals in at least two different measuring directions on the basis of the magnetic field that changes due to rotation of the signal generator
Data Source
AI summary
An angle detection system which includes a signal generator and at least one at least biaxial Hall sensor which is configured to generate at least two measurement signals in at least two different measuring directions on a basis of a magnetic field that changes due to rotation of the signal generator. The signal generator includes a magnet that is polarized such that a magnetic field strength measured by the Hall sensor changes as the signal generator rotates, and the signal generator being arranged within the detection range of the at least one Hall sensor. Based on the measurement signals generated by the at least one Hall sensor, an angular position of the signal generator is determined in a control unit, in particular on the principle of machine learning. Further indicated are an angle detection system and a valve.