Motor-Driven Appliance Wireless Activation via Electromagnetic Induction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Motor-driven appliances with power-saving functions cannot perform wireless communication when the control voltage is stopped, limiting their ability to receive data from external devices even when electromagnetic waves are received.

Innovation Solution

Incorporating a receiving unit capable of inducing a supply signal with electromagnetic waves, a supply signal output unit to restart the control voltage, and a power holding unit to maintain voltage supply, allowing the control unit to operate and receive data from external devices without consuming internal power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the control voltage is stopped to reduce power consumption, then power consumption is reduced, but wireless communication capability is lost

Engineering Contradiction:

Improvepower consumptionVSAvoidwireless communication capability

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The receiving unit uses the received electromagnetic wave energy itself to generate the supply signal that activates the control unit, allowing the system to perform wireless communication activation without consuming internal battery power. The external energy source serves the dual purpose of communication signal and power supply.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The electromagnetic wave received by the receiving unit serves multiple functions: it acts as both the communication signal carrier and the power source for activating the control unit. This multi-functionality resolves the contradiction by using the same external energy for both communication and power supply purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Use of energy by moving object

If the control circuit is completely stopped to save power, then power consumption is reduced, but the ability to receive data from external devices is lost

Engineering Contradiction:

Improvepower consumptionVSAvoiddata retrieval capability

Core Design Contradiction:

Use of energy by moving objectVSLoss of information

Solution Approach 1:

The receiving unit is designed to be able to receive electromagnetic waves even when the control unit is stopped. When an electromagnetic wave is detected, the system preliminarily activates the control unit by generating a supply signal from the received wave, enabling data retrieval without maintaining continuous power consumption.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If the control unit is activated continuously to maintain wireless communication capability, then communication capability is maintained, but power consumption increases

Engineering Contradiction:

Improvewireless communication capabilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

Instead of continuous activation, the control unit is activated periodically only when needed - specifically, when the receiving unit detects an electromagnetic wave from an external device. This on-demand activation maintains communication capability while minimizing power consumption by keeping the control unit stopped during idle periods.

Inventive Principle:

Principle #19Periodic action

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

Enables wireless communication and data retrieval from external devices even in a power supply stop state, reducing power consumption by using external energy for activation and maintaining voltage supply efficiently.

Implementation Method 1

The receiving unit is capable of receiving an electromagnetic wave transmitted from the external device... The activation operation unit performs a given activation operation to cause the supply signal output unit to output the supply signal by an electromotive force induced in the coil by the electromagnetic wave received by the coil

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9793730B2Motor-driven appliance

Publication Date: 2017.10.17 MAKITA CORP

AI summary

A motor-driven appliance comprises a drive source for driving a tool, a control unit, a power supply unit, a switch unit, a receiving unit, a supply signal output unit, and a data communication unit. The power supply unit generates a control voltage for operating the control unit. The switch unit supplies the control voltage to the control unit and stops supply of the control voltage to the control unit. The control voltage is supplied to the control unit while a given supply signal is inputted to the switch unit. The supply signal output unit outputs, to the switch unit, the supply signal for supplying the control voltage to the control unit when the receiving unit receives the electromagnetic wave while the supply of the control voltage to the control unit is stopped. The data communication unit outputs, to the control unit, the data contained in the electromagnetic wave.