Accessory Device State Detection with Magnetic Field Reference Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with analog sensors can malfunction when substances with magnetism are present, leading to incorrect identification of accessory device attachment or detachment, causing user inconvenience.
Innovation Solution
Incorporating a magnetic sensor that identifies magnetic field intensity and polarity, along with a wireless communication circuit and processor, to accurately determine the state of an accessory device by comparing multiple intensity readings and updating a reference intensity for precise state identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an analog sensor is used to identify accessory device attachment or detachment, then the device structure remains simple, but the measurement precision deteriorates when substances with magnetism are present
Solution Approach 1:
The patent changes the measurement parameter from electromotive force (analog sensor) to magnetic field intensity (magnetic sensor). This parameter change allows accurate detection of accessory device attachment state even when substances with magnetism are present, as the magnetic sensor can distinguish between the magnetic field of the accessory device and other magnetic substances through threshold comparison and state transition logic
Solution Approach 2:
The patent replaces the analog sensor-based electromagnetic detection system with a magnetic sensor-based detection system. This substitution enables digital-like discrete state identification (attached/detached) through magnetic field intensity threshold comparison, improving measurement precision while maintaining relatively simple device structure
2Reliability
If the reference intensity is updated based on multiple intensity readings, then the reliability of state identification improves, but the loss of time increases due to multiple measurements and processing
Solution Approach 1:
The patent performs preliminary action by updating the reference intensity in advance during periods when the accessory device is known to be detached. This allows the system to have a pre-established baseline for comparison, reducing the need for extensive real-time measurements and processing when state changes occur
Solution Approach 2:
The patent implements periodic action by updating the reference intensity at specific intervals or under specific conditions (e.g., when detachment is detected). This periodic update strategy balances the need for accurate reference data with the time cost of multiple measurements, updating only when necessary rather than continuously
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
Enhances accuracy in identifying the state of an electronic device by using relative changes in magnetic field intensity and short-range wireless signals, reducing malfunctions and improving user experience.
Implementation Method 1
a magnetic sensor that identifies an intensity of a magnetic field
Data Source
AI summary
An electronic device may include: a magnetic sensor configured to identify the intensity of a magnetic field; a wireless communication circuit; a processor; and memory electrically connected to the magnetic sensor, the wireless communication circuit, and the processor, and storing instructions. The processor may be configured so that the electronic device: uses the magnetic sensor to identify a plurality of intensities of the magnetic field during a first period; identifies, on the basis of the plurality of intensities, whether a reference intensity has been updated; identifies a first state of the electronic device when the reference intensity has been updated, the first state being identified on the basis of a comparison result between the latest intensity among the plurality of intensities and the updated reference intensity; and performs a function according to the identified first state. Various other embodiments identified through the specification are possible.