Magnetic Component Connection via Electromagnetic Actuation and Authentication

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Solution Overview

Problem

Current mechanical connection/disconnection technologies in electronic devices lack security, allowing unauthorized cards to be installed and used, leading to potential information leakage.

Innovation Solution

An electronic device with a magnetic medium and coil that generates a magnetic field to connect and disconnect electronic components based on identification information, ensuring only authorized components are connected through a processor-driven magnetic force and signal control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a mechanical lever is used to control connection/disconnection, then ease of operation is improved, but security deteriorates

Engineering Contradiction:
Improveease of operationVSAvoidsecurity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical lever system with an electromagnetic control system. A magnetic component interacts with a magnetic field generated by an electromagnetic actuator to control the connection state. This substitution eliminates the direct mechanical linkage that allowed unauthorized card changes, while maintaining ease of operation through electromagnetic actuation controlled by authentication logic.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the control system and the mechanical connection component. The electromagnetic actuator generates a magnetic field that actuates the magnetic component, which in turn controls the connection state. This intermediary layer allows for controlled authentication-based operation while preventing direct mechanical manipulation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If a mechanical connection structure is used, then device complexity is reduced, but security deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidsecurity
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent replaces the simple mechanical lever structure with an electromagnetic control system consisting of an electromagnetic actuator, magnetic component, and control circuitry. While this increases device complexity, it enables authentication-based security control that prevents unauthorized access, thereby improving reliability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the control parameter from direct mechanical movement to electromagnetic field interaction. The electromagnetic actuator controls the magnetic field strength, which in turn controls the actuation of the magnetic component. This parameter change enables fine-grained control over the connection state based on authentication results.

Inventive Principle:
Principle #35Parameter 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

Enhances security by preventing unauthorized components from being used by disconnecting them if their identification information does not match a preset identifier, thus improving the overall security of the electronic device.

Implementation Method 1

be magnetized by a first magnetic field generated by the electronic component, and be connected to the electronic component under an effect of a magnetic force of the first magnetic field

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Implementation Method 2

generate a first electric signal according to a change of a magnetic flux in the coil, where the first electric signal is used to drive the processor

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3148005B1Method and device for connection and separation
Publication Date: 2021.01.13 HUAWEI TECH CO LTD
  • EP3148005B1 patent drawingFigure 1~3
  • EP3148005B1 patent drawingFigure 4~5
  • EP3148005B1 patent drawingFigure 6~7

AI summary

Embodiments of the present invention relate to the field of electronic design, and provide a connection/disconnection method and apparatus, so as to improve security of an electronic device. The method includes: detecting, by an electronic device, a change of a magnetic flux of a first magnetic field in the electronic device, and generating a first electric signal according to the change of the magnetic flux, where the first magnetic field is generated by an electronic component, a magnetic force of the first magnetic field is used to drive the electronic component to be connected to the electronic device, and the electronic component is connected to a target connection component; if a change of the first electric signal meets a first preset model, determining, by the electronic device, whether identification information of the target connection component is the same as a preset identifier; and if the identification information of the target connection component is different from the preset identifier, driving, by the electronic device, the electronic component to be disconnected from the electronic device.