Triaxial Hall Sensor for Gearshift Lever Position Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gearshift lever detection systems in motor vehicles require multiple sensors and complex wiring, leading to increased computation effort and potential reliability issues due to dirt and wear, especially in two-dimensional movement scenarios.
Innovation Solution
A device with a single triaxial Hall sensor system configured to detect the relative position of a magnetized signal transmitter in three dimensions, allowing for precise gearshift lever position detection without the need for multiple sensors, using a magnet as the signal transmitter and a 3D-Hall sensor as the signal receiver, which can be arranged in a fixed position within the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to detect gearshift lever position in two-dimensional movement, then measurement precision is improved, but device complexity and computation effort increase
Solution Approach 1:
The patent combines three orthogonal magnetic field measurements (X, Y, Z components) into a single triaxial Hall sensor system. This merging of multiple measurement functions into one sensor eliminates the need for separate sensors and complex wiring, while maintaining the ability to detect two-dimensional gearshift lever movement with high precision.
Solution Approach 2:
The triaxial Hall sensor performs multiple measurement functions simultaneously by detecting magnetic field components in three orthogonal directions. This single sensor can determine the gearshift lever's position in two-dimensional space, making it a multi-functional device that replaces what would traditionally require multiple single-axis sensors.
2Measurement precision
If multiple sensors are arranged at distances from each other, then complete position detection is achieved, but manufacturing precision and alignment requirements increase
Solution Approach 1:
The patent integrates three magnetic field measurement capabilities into a single triaxial Hall sensor component. This eliminates the need to precisely arrange multiple sensors at specific distances and orientations, as all three measurement dimensions are captured at one location, significantly reducing manufacturing and alignment complexity.
3Ease of operation
If light barriers with mechanical coupling components are used, then gearshift lever position detection is achieved, but reliability decreases due to dirt and wear
Solution Approach 1:
The patent replaces mechanical coupling components and light barrier systems with a magnetic field-based detection system. The triaxial Hall sensor detects the gearshift lever position through magnetic field interactions without requiring direct mechanical contact or coupling, eliminating wear and dirt accumulation issues associated with mechanical systems.
4Measurement precision
If two-dimensional movement detection is implemented with multiple sensors, then positioning accuracy is improved, but loss of substance increases due to more wiring and materials
Solution Approach 1:
The patent merges three measurement functions into one triaxial Hall sensor, eliminating the need for multiple separate sensors and their associated wiring. This single sensor provides complete two-dimensional position detection capability, significantly reducing material consumption and wiring complexity while maintaining measurement precision.
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 enhances the reliability and reduces computation effort by enabling complete gearshift lever position detection in three dimensions with a single sensor, improving signal changes and evaluation precision, thus simplifying the construction and operation of gearshift lever devices.
Implementation Method 1
a single triaxial Hall sensor system configured to detect the relative position of a magnetized signal transmitter in three dimensions
Data Source
AI summary
A device for detecting the position of a gear step selector lever (2′) for selecting a gear setting of a motor vehicle has a signal transmitter (14) arranged at the gear step selector lever (2′) and a signal receiver (16) arranged spaced apart from the signal transmitter (14). The relative position between signal transmitter (14) and signal receiver (16) varies for different gear steps which can be selected. The signal transmitter (14) may be a magnet and the signal receiver (16) may be a triaxial Hall sensor system, designed so as to detect the relative position in three dimensions. Where the gear step selector lever (2′) has a ball joint (20), the signal transmitter (14) is arranged at one ball (22) of the ball joint (20). In this arrangement, a north-south-axis (18) of the magnet (14) does not run through a ball center (26). The invention further relates to a motor vehicle comprising a corresponding device.