Contactless Power Switch Using Magnetic Trigger Mechanism

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Solution Overview

Problem

Conventional power switches suffer from wear, oxidation, and fatigue due to prolonged friction at their internal contact points, leading to inefficient operation and reliability issues.

Innovation Solution

A contactless power switch utilizing a magnetic trigger mechanism, magnetic sensor, controller, and mode switching module, which generates and processes magnetic signals to control power switching operations without physical contact, thereby eliminating wear and oxidation concerns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional contact-operable switches are used, then the switching function is achieved, but wear and oxidation occur at the contact points due to prolonged friction

Engineering Contradiction:

Improveswitching reliabilityVSAvoidwear and oxidation at contact points

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical contact-based switching system with a magnetic field-based sensing system. The magnetic sensor detects changes in magnetic flux caused by the magnetic trigger mechanism, generating control signals without any physical contact between components. This substitution eliminates wear and oxidation issues while maintaining reliable switching functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the user input and the switching control. The magnetic trigger mechanism generates magnetic flux changes that are detected by the magnetic sensor, which then generates control signals. This intermediary magnetic field transmission method avoids direct mechanical contact between the trigger and sensor components.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If contact-operable switches are used, then the switching operation is simple, but the contact points suffer from fatigue and poor contact due to metal oxidation

Engineering Contradiction:

Improveswitching operation simplicityVSAvoidcontact point durability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If magnetic trigger mechanism is used, then wear and oxidation are eliminated, but the device complexity increases due to additional components

Engineering Contradiction:

Improvewear and oxidation eliminationVSAvoidswitch structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent extracts the magnetic trigger mechanism and magnetic sensor as separate functional modules from the traditional contact-based switch structure. This modular extraction allows the contactless switching function to be integrated into existing systems with minimal disruption to the overall device architecture, managing complexity through functional separation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The magnetic sensor serves multiple functions: it detects magnetic flux changes from the trigger mechanism, generates control signals for switching, and can potentially detect other magnetic field variations. This multi-functionality reduces the need for additional dedicated components, managing overall device complexity while achieving wear-free operation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 contactless power switch provides reliable and efficient power control with reduced wear and oxidation, enhanced durability, and energy-saving capabilities through an awake/sleep cycle, while enabling remote control and safety features like over-voltage protection.

Implementation Method 1

a magnetic sensor, for sensing the magnetic signal and generating a corresponding trigger control signal

Methodology Applied

Scientific EffectMagnetic sensing: Hall Effect

Data Source

PatentUS9184746B2Contactless switch and associated method

Publication Date: 2015.11.10 PROLIFIC TECH INC

AI summary

A contactless switch provided by the present disclosure is coupled to a signal input device and receives a magnetic signal generated by a magnetic trigger mechanism. The contactless switch includes: a magnetic sensor, for sensing the magnetic signal and generating a corresponding trigger control signal; a controller, for generating a switch signal according to the trigger control signal; and a mode switch module, for processing the input signal to generate an output signal according to the switch signal.