Wireless Terminal Magnetic Sensor Array for Reliable Flip Detection
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Solution Overview
Problem
Conventional wireless communication terminals with single magnetic sensors often malfunction due to external magnetic fields, incorrectly determining the opening or closing of the sub-body, which affects the activation or deactivation of the display unit.
Innovation Solution
The use of multiple magnetic pole sensors, including north and south magnetic pole generators and sensors, along with a controller to accurately determine the opening or closing of the sub-body by comparing signals and maintaining or changing the state of the display unit accordingly, prevents malfunctions caused by external magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single magnetic sensor is used to sense the opening/closing of the sub-body, then the device complexity is reduced, but the reliability of the sensing function deteriorates due to interference from external magnetic fields
Solution Approach 1:
The single magnetic sensor is divided into multiple magnetic sensors (at least two) positioned at different locations. Each sensor independently detects magnetic field changes, and their signals are combined through logical operations (AND operation) to determine the opening/closing state. This segmentation approach maintains relatively simple device structure while significantly improving reliability by eliminating false detections caused by external magnetic fields.
2Reliability
If multiple magnetic sensors are used to improve sensing reliability, then the reliability of the sensing function is improved, but the device complexity increases
Solution Approach 1:
The sensing function is segmented into multiple independent magnetic sensors positioned at different locations within the terminal. Each sensor provides redundant detection capability, and the controller uses logical operations to process their signals. This segmentation achieves high reliability without requiring complex sensor arrays or sophisticated processing algorithms.
Solution Approach 2:
The system implements feedback through logical operations (AND operation) on signals from multiple magnetic sensors. The controller continuously monitors the signals from all sensors and only determines the sub-body as closed when all sensors simultaneously detect the magnetic field change. This feedback mechanism eliminates false positives from external magnetic fields while maintaining simple device architecture.
3Measurement precision
If magnetic sensors are positioned close to the sub-body for accurate detection, then the measurement precision is improved, but the sensors become more susceptible to external magnetic field interference
Solution Approach 1:
Instead of using a single highly sensitive sensor close to the sub-body, the system segments the detection function across multiple sensors positioned at different locations. Each sensor can be positioned at an optimal distance to balance sensitivity and interference resistance. The combined signal from all sensors achieves accurate detection while reducing individual sensor susceptibility to external magnetic fields.
Solution Approach 2:
The system uses feedback through logical operations to verify detection consistency across multiple sensors. Only when all sensors simultaneously detect the magnetic field change (indicating sub-body closing) does the system register the event. This feedback mechanism filters out false detections from external magnetic fields while maintaining high measurement precision for actual sub-body state changes.
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 ensures reliable activation or deactivation of the display unit in wireless communication terminals by accurately sensing the sub-body's state, even in the presence of external magnetic fields, thereby preventing malfunctions and improving user experience.
Implementation Method 1
a first magnetic pole generator for generating a north (N) magnetic pole; a second magnetic pole generator for generating a south (S) magnetic pole
Implementation Method 2
a first magnetic pole sensor for sensing the N magnetic pole from the first magnetic pole generator; a second magnetic pole sensor for sensing the S magnetic pole from the second magnetic pole generator
Data Source
AI summary
A wireless communication terminal with an opening/closing function using a plurality of magnetic pole sensors and method therefor is provided. The invention activates or inactivates a display unit via a switch by sensing an opening/closing of a sub-body using the magnetic pole sensors, to thereby prevent a malfunctioning due to a magnetic pole caused by an external magnetic pole generator. The inventive wireless communication terminal comprises a first magnetic pole generator for generating a north (N) magnetic pole, a second magnetic pole generator for generating a south (S) magnetic pole, a first magnetic pole sensor for sensing the N magnetic pole from the first magnetic pole generator, a second magnetic pole sensor for sensing the S magnetic pole from the second magnetic pole generator, a controller for controlling an operation of a switch to activate or inactivate an output unit based on the sense result from the first and the second magnetic pole sensors, the switch performing a switching operation in response to a control signal from the controller, and the output unit activated or inactivated in accordance with the switching operation of the switch.