Object Detection Device Using Magnetic Field and Hall Effect Sensor
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Solution Overview
Problem
Existing automatic drug management systems face issues with the need for frequent spring replacements due to increased stiffness over time, complex assembly, and precise object handling requirements, which affect real-time monitoring and accuracy.
Innovation Solution
A device using a compression spring connected to a plate within the housing, allowing horizontal movement of flaps to be directly transmitted as a vertical motion, simplifying assembly and enhancing robustness and accuracy, while eliminating the need for torsion springs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a torsion spring system is used to detect object movement, then the device can automatically detect object presence and removal, but the spring requires frequent replacement due to increased stiffness over time
Solution Approach 1:
The patent removes the torsion spring from the system entirely and replaces it with a magnetic field-based detection mechanism using Hall effect sensors. This extraction eliminates the component suffering from stiffness degradation while preserving the automatic detection function.
Solution Approach 2:
The mechanical torsion spring system is replaced with a magnetic field-based detection system. Magnets are attached to the movable flaps, and Hall effect sensors detect their position, converting mechanical movement into electrical signals without physical contact or mechanical stress.
2Extent of automation
If a torsion spring system is used for object detection, then automatic detection is achieved, but the assembly becomes complex and maintenance difficult
Solution Approach 1:
The complex mechanical torsion spring assembly is replaced with simpler magnetic components (small magnets) and electronic sensors (Hall effect sensors). This substitution reduces mechanical complexity while maintaining or enhancing automated detection capabilities.
Solution Approach 2:
The Hall effect sensor acts as an intermediary between the mechanical movement of flaps and the electronic detection system. It converts magnetic field changes caused by flap movement into electrical signals, eliminating the need for direct mechanical coupling and reducing assembly complexity.
3Measurement precision
If precise object handling is required for accurate detection, then detection accuracy improves, but the system becomes more sensitive to handling variations and requires precise operation
Solution Approach 1:
The magnetic field-based detection system automatically detects flap position changes without requiring precise manual handling. The Hall effect sensors continuously monitor magnetic field positions, making the system self-aware of object presence and removal regardless of handling variations.
Solution Approach 2:
The detection method changes from mechanical position measurement (requiring precise alignment) to magnetic field detection. By attaching magnets to flaps and using Hall effect sensors, the system detects position through magnetic field changes, which are more tolerant of handling variations and require less precise operation.
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
The device provides a simpler, more durable solution for automatic object detection with improved accuracy and reduced maintenance, enabling effective real-time monitoring without the limitations of torsion spring systems.
Implementation Method 1
a compression spring connected to a plate within the housing, allowing horizontal movement of flaps to be directly transmitted as a vertical motion
Implementation Method 2
once combined with a pressure sensor, provides a drug management system
Data Source
AI summary
Device including an object accommodating system having two flaps defining between one another an accommodating space and bearing against a plate of a pushbutton arranged to move between a first position corresponding to the placing of the object in the accommodating space, this causing the ends of the flaps to move away from one another, and a second position corresponding to the removal of the object, this causing the two ends to move towards one another, the plate being connected to a compression spring bearing against a bottom wall of a housing.