Magnetic Sensor Cover Detection Using Signal Magnitude Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The development of electronic devices is hindered by the need for Hall sensors to recognize cover devices, which increases costs and complicates manufacturing, as not all users utilize cover devices and replacing these sensors adds additional complexity.
Innovation Solution
An electronic device equipped with a magnetic sensor, communication module, and processor that identifies magnetic signals to determine if a cover device is coupled, corrects sensor data based on signal magnitude, and authenticates the cover device using identification information, thereby eliminating the need for Hall sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Hall sensor is mounted on all electronic devices to recognize cover devices, then the cover device recognition function is improved, but the development cost and device complexity increase
Solution Approach 1:
The magnetic sensor is designed to serve multiple functions: it acts as both a magnetic field sensor for navigation/positioning and a cover device detection sensor. By integrating cover detection capability into the existing magnetic sensor functionality, the system eliminates the need for separate Hall sensors while maintaining comprehensive sensor coverage for all device operations
Solution Approach 2:
The patent creates a virtual Hall sensor by processing magnetic sensor data through software algorithms. Instead of using physical Hall sensor hardware, the system copies the functional behavior of a Hall sensor by detecting magnetic field changes from the magnetic sensor and interpreting them as cover opening/closing events through programmed logic
2Reliability
If a Hall sensor is mounted on all electronic devices to recognize cover devices, then the cover device recognition function is improved, but the development cost increases
Solution Approach 1:
The magnetic sensor is designed to serve multiple functions: it acts as both a magnetic field sensor for navigation/positioning and a cover device detection sensor. By integrating cover detection capability into the existing magnetic sensor functionality, the system eliminates the need for separate Hall sensors while maintaining comprehensive sensor coverage for all device operations
Solution Approach 2:
The patent creates a virtual Hall sensor by processing magnetic sensor data through software algorithms. Instead of using physical Hall sensor hardware, the system copies the functional behavior of a Hall sensor by detecting magnetic field changes from the magnetic sensor and interpreting them as cover opening/closing events through programmed logic
3Device complexity
If a new sensor replacing the Hall sensor is added to the electronic device, then the device complexity is reduced, but the manufacturing process becomes more complicated
Solution Approach 1:
The magnetic sensor is designed to serve multiple functions: it acts as both a magnetic field sensor for navigation/positioning and a cover device detection sensor. By integrating cover detection capability into the existing magnetic sensor functionality, the system eliminates the need for separate Hall sensors while maintaining comprehensive sensor coverage for all device operations
Solution Approach 2:
The patent creates a virtual Hall sensor by processing magnetic sensor data through software algorithms. Instead of using physical Hall sensor hardware, the system copies the functional behavior of a Hall sensor by detecting magnetic field changes from the magnetic sensor and interpreting them as cover opening/closing events through programmed logic
4Reliability
If magnetic materials are used in cover devices, then the cover device functionality is improved, but sensor data accuracy deteriorates due to magnetic interference
Solution Approach 1:
The patent converts the harmful magnetic interference from cover device materials into a useful detection signal. By detecting the magnetic field changes caused by magnetic materials in the cover, the system can identify cover presence and state. The same magnetic materials that previously degraded sensor accuracy are now the basis for accurate cover detection through sophisticated signal processing algorithms
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 reduces development costs and prevents performance degradation due to magnetic materials in cover devices by accurately recognizing cover devices and correcting sensor errors, enhancing the device's functionality and efficiency.
Implementation Method 1
identify that a magnetic signal is detected through the magnetic sensor
Data Source
AI summary
An electronic device includes: a magnetic sensor; a communication module; at least one processor operatively connected with the magnetic sensor and the communication module. The at least one processor is configured to: identify that a magnetic signal is detected through the magnetic sensor; identify, based on a magnitude of the detected magnetic signal, whether the magnetic signal is generated by coupling the electronic device with a cover device; and based on identifying that the magnetic signal is generated by coupling the electronic device with the cover device, correct sensor data of the magnetic sensor.