Steering Column Switch With Single-Sensor Multi-Direction Detection
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Solution Overview
Problem
Existing steering column switches require multiple magnets and magnetic sensors for different actuating directions, leading to increased complexity and installation space, which hinders the development of a more compact and cost-effective design.
Innovation Solution
A steering column switch utilizing a single magnet and magnetic sensor to detect actuation movements in multiple directions by varying the relative movement between the magnet and sensor, allowing for a compact design with reduced component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple magnets and magnetic sensors are used for different actuating directions, then the detection accuracy for multiple actuating directions is improved, but the device complexity and installation space increase
Solution Approach 1:
A single magnetic sensor is designed to detect magnetic field changes from a magnet in multiple spatial directions. The sensor can detect actuating movements in first, second, and third actuating directions by measuring changes in magnetic flux density along different axes, eliminating the need for separate sensors for each direction while maintaining detection accuracy
Solution Approach 2:
The solution transitions from using multiple separate sensors in different spatial locations to using a single sensor that detects changes in multiple dimensions. By monitoring magnetic field variations along x, y, and z axes, the system captures multi-directional actuating movements through a unified detection mechanism, reducing component count while preserving measurement capability
2Measurement precision
If multiple magnets and magnetic sensors are used for different actuating directions, then the detection accuracy for multiple actuating directions is improved, but the installation space increases
Solution Approach 1:
Multiple detection functions that would traditionally require separate magnets and sensors are merged into a single integrated system. One magnet and one multi-axis magnetic sensor are positioned in close proximity, allowing the detection of actuating movements in multiple directions within a compact volume, significantly reducing the installation space required
Solution Approach 2:
The single magnetic sensor is designed with multi-functional capability to detect actuating movements in first, second, and third actuating directions. This universal detection approach eliminates the need for multiple dedicated sensors, thereby reducing the overall installation space while maintaining the ability to accurately detect movements in all required directions
3Adaptability or versatility
If multiple magnets and magnetic sensors are used for different actuating directions, then the functionality for controlling multiple functions is improved, but the device complexity increases
Solution Approach 1:
The steering column switch is designed with a single magnet and single magnetic sensor that can detect actuating movements in multiple directions (first, second, and third actuating directions). This universal detection system supports control of multiple vehicle functions including direction indicators, lighting, wipers, and cruise control, eliminating the need for separate detection mechanisms for each function while maintaining full functionality
Solution Approach 2:
The system uses dynamic detection of magnetic field changes as the magnet moves relative to the sensor in different directions. By monitoring the changing magnetic flux density in real-time as actuating elements move, the system can distinguish between different actuating directions and trigger appropriate functions, providing versatile control without requiring static multiple sensor arrangements
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 enables a more compact and cost-effective steering column switch with comparable functionality to existing designs, reducing installation space requirements and simplifying the actuation mechanism.
Implementation Method 1
a magnet for generating a magnetic field, and a magnetic sensor for detecting the magnetic field generated by the magnet
Data Source
AI summary
Steering column switch (20) for a vehicle, in particular for a utility vehicle, wherein the steering column switch (20) has a housing (32), an actuating device which can be coupled to an operating element and has at least one actuating element (21, 22, 23), a magnet (24) and a magnetic sensor (28), wherein an actuating movement of an actuating element (21, 22, 23) in a first actuating direction (R1, R2, R3) can bring about a relative movement between the magnet (24) and the magnetic sensor (28) in a first direction of movement and an actuating movement of an actuating element (21, 22, 23) of the actuating device in a second actuating direction (R1, R2, R3) can bring about a relative movement between the magnet (24) and the magnetic sensor (28) in a second direction of movement different from the first direction of movement, wherein the magnetic sensor (28) is set up to detect the relative movement between the magnet (24) and the magnetic sensor (28) in each case in the first direction of movement (R1, R2, R3) and in the second direction of movement (R1, R2, R3) and, depending on the detected relative movement in the first direction of movement, to generate a first switching signal and, depending on the detected relative movement in the second direction of movement, a second switching signal.