Magnetic Sensor Manual Control for Vertical Movement Detection
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Solution Overview
Problem
Existing manual control devices for work machines and construction machines require additional sensor technology for detecting vertical movement, which complicates setup, increases costs, and reduces the lifetime of actuating units due to exposure to environmental conditions.
Innovation Solution
A manual control device using magnetic field sensors to detect movement in multiple directions, including vertical movement, by utilizing changes in magnetic field intensity, eliminating the need for additional sensors and simplifying circuit evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional sensor technology is used to detect vertical movement, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The magnetic field sensor unit is designed to detect movements in multiple directions (x/y-plane and vertical z-direction) using the same sensor element. The sensor evaluates changes in magnetic field intensity caused by magnet displacement in any direction, eliminating the need for separate sensor technologies for vertical detection.
Solution Approach 2:
The sensor detects vertical movement by measuring changes in magnetic field intensity parameters. When the magnet moves vertically relative to the sensor, the magnetic field intensity changes, and this parameter change is evaluated to determine vertical position or movement, allowing a single sensor to detect multi-directional movements.
2Measurement precision
If additional sensor elements are arranged in the actuating unit, then vertical movement detection is enabled, but the actuating unit lifetime is reduced due to exposure to environmental conditions
Solution Approach 1:
The sensor element is extracted from the actuating unit and placed in a protected evaluation unit. Only the magnet remains in the actuating unit, which is exposed to environmental conditions. The sensor, being stationary and protected, detects magnet movement without being exposed to rain, dust, or temperature extremes, thereby extending system reliability.
Solution Approach 2:
The magnetic field acts as an intermediary between the magnet in the actuating unit and the protected sensor. The magnet's movement through the magnetic field allows the protected sensor to detect position changes without physical contact or exposure to harsh environments, maintaining detection capability while improving reliability.
3Measurement precision
If multiple different sensor types are used for plane and vertical movement, then comprehensive movement detection is achieved, but controller complexity increases
Solution Approach 1:
A single magnetic field sensor unit performs multiple detection functions by evaluating magnetic field intensity changes from magnet displacement in any direction. The same sensor and evaluation unit process signals for both planar (x/y) and vertical (z) movements, simplifying the controller architecture compared to using multiple different sensor types requiring separate evaluation circuits.
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 easy and cost-effective detection of vertical movement without additional sensors, protecting internal components from environmental influences and reducing the need for frequent replacements.
Implementation Method 1
an evaluating unit which has at least one magnetic field sensor unit, wherein the evaluating unit is configured to detect a position and/or movement of the actuation element in a plane of movement based on a sensor signal from the magnetic field sensor unit
Data Source
AI summary
A manual control device for a control and operating unit of a lifting work platform, work machine or construction machine has at least one actuating unit which has an actuation element having at least one magnetic position element, and an evaluating unit having at least one magnetic field sensor unit. The evaluating unit is configured to detect a position and/or movement of the actuation element in a plane of movement based on a sensor signal from the magnetic field sensor unit. The actuation element is movable relative to the sensor unit along a further direction of movement perpendicularly to the plane of movement, wherein the evaluating unit is configured to detect a movement of the actuation element along the further direction of movement based on a sensor signal from the magnetic field sensor unit.