Electromagnetic Induction Panel for Accessory State Detection
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Solution Overview
Problem
Existing electronic devices face challenges in determining whether an accessory, such as a cover, is mounted, which hinders providing a user-friendly environment and requires costly hall effect ICs for state detection.
Innovation Solution
Incorporating an electromagnetic induction panel with a processor to sense signal magnitudes in specific channel combinations, allowing the device to recognize the mounted state of accessories without electrical connection and hall effect ICs, thus enabling a user-friendly environment and cost savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hall effect IC is used to determine the opening/closing state of the cover, then the state detection function is achieved, but the device complexity and production cost increase
Solution Approach 1:
The patent extracts the state detection function from the complex hall effect IC system and implements it using a simple electromagnetic induction panel with coil groups. This separates the essential sensing function from the complex integrated circuit, reducing device complexity while maintaining reliability.
Solution Approach 2:
The patent replaces the mechanical/electronic hall effect IC system with an electromagnetic induction-based sensing system. The electromagnetic induction panel uses electromagnetic fields to detect magnet position, substituting the complex electronic state detection mechanism with a simpler electromagnetic field-based approach.
2Reliability
If a hall effect IC is used to determine the opening/closing state of the cover, then the state detection function is achieved, but the production cost increases
Solution Approach 1:
The patent uses a simple electromagnetic induction panel with coil groups that can be manufactured at lower cost compared to hall effect ICs. The sensing elements are basic electromagnetic coils that are cheaper to produce, allowing for cost-effective mass production while maintaining the state detection function.
Solution Approach 2:
The patent replaces expensive hall effect ICs with a simpler electromagnetic induction panel system. This substitution reduces component cost while achieving the same functional outcome of detecting cover state through electromagnetic field interaction with magnets.
3Reliability
If electrical connections are used to determine accessory mounting state, then the detection function is achieved, but the device complexity and potential for connection failures increase
Solution Approach 1:
The patent replaces electrical connection-based detection with electromagnetic field-based detection. The electromagnetic induction panel senses the presence and position of magnets through electromagnetic field interaction, eliminating the need for physical electrical connections between the accessory and device, thus reducing connection complexity and potential failure points.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary between the magnet in the accessory and the sensing system. This electromagnetic field acts as a non-contact mediator that transmits information about accessory mounting state without requiring direct electrical contact, thereby simplifying the system and improving reliability.
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 solution allows electronic devices to recognize accessory states accurately, providing a convenient user experience while reducing production costs by eliminating the need for hall effect ICs and electrical connections.
Implementation Method 1
an electromagnetic induction panel disposed inside the housing, including a first channel group corresponding to a first direction and a second channel group corresponding to a second direction perpendicular to the first direction, and sensing a first signal flowing into the first channel group and a second signal flowing into the second channel group
Data Source
AI summary
An electronic device includes a housing, a display, an electromagnetic induction panel including a first channel group corresponding to a first direction and a second channel group corresponding to a second direction perpendicular to the first direction, and sensing a first signal flowing into the first channel group and a second signal flowing into the second channel group, and a processor and electrically connected to the electromagnetic induction panel. The processor is configured, if a combination of at least one first channel, in which it is sensed that a magnitude of the first signal is not greater than a first critical value, in the first channel group and at least one second channel, in which it is sensed that a magnitude of the second signal is not greater than a second critical value, in the second channel group corresponds to one of predefined channel combinations, to perform a preset operation.