Microwave Resonator Control for Sensorless Aerosol Article Detection

Solution Overview

Problem

Aerosol generating devices of the dielectric heating type face challenges in identifying different types of aerosol generating articles without adding additional sensors, which can increase manufacturing costs and complicate device size reduction.

Innovation Solution

An aerosol generating device that autonomously identifies aerosol generating articles using a microwave resonator, a power monitoring unit, and a processor to determine the article type based on reflected microwaves, adjusting microwave power output accordingly through a look-up table.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If additional sensors are added to identify aerosol generating article types, then identification accuracy is improved, but manufacturing cost increases and device size increases

Engineering Contradiction:

Improveidentification accuracyVSAvoiddevice size

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The microwave resonator is designed to serve dual functions: heating the aerosol generating article and identifying its type through reflected microwave analysis. This eliminates the need for separate identification sensors, reducing device complexity while maintaining identification accuracy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses its own microwave transmission and reflection characteristics to identify article types without requiring external sensors. The processor analyzes the reflected microwaves to determine article type, allowing the heating element itself to perform identification.

Inventive Principle:

Principle #25Self-service

2Measurement precision

If additional sensors are added to identify aerosol generating article types, then identification accuracy is improved, but manufacturing cost increases

Engineering Contradiction:

Improveidentification accuracyVSAvoidmanufacturing cost

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The microwave resonator is designed to serve dual functions: heating the aerosol generating article and identifying its type through reflected microwave analysis. This eliminates the need for separate identification sensors, reducing device complexity while maintaining identification accuracy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses its own microwave transmission and reflection characteristics to identify article types without requiring external sensors. The processor analyzes the reflected microwaves to determine article type, allowing the heating element itself to perform identification.

Inventive Principle:

Principle #25Self-service

3Productivity

If microwave power is adjusted according to article type, then heating efficiency is improved, but control complexity increases

Engineering Contradiction:

Improveheating efficiencyVSAvoidcontrol complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system measures the reflected micrawves to determine article type and uses this information to adjust microwave power settings. The processor retrieves appropriate power profiles from memory based on identified article type, creating a feedback loop that optimizes heating efficiency.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Power profiles for different article types are pre-stored in memory. Once the article type is identified through reflected microwave analysis, the system quickly retrieves the corresponding pre-configured power profile, avoiding complex real-time calculations and simplifying control.

Inventive Principle:

Principle #10Preliminary 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 efficient and cost-effective identification and heating of various aerosol generating articles without additional sensors, optimizing power usage and device size.

Implementation Method 1

aerosol generating devices are configured to generate aerosols by heating aerosol generating materials in a resistance heating method or an induction heating method. However, recently, aerosol generating devices of a dielectric heating type, in which aerosol generating materials are heated by using microwaves, have been proposed.

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Implementation Method 2

a resonator including an accommodation space accommodating an aerosol generating article, the resonator configured to heat the aerosol generating article by resonating the microwave

Methodology Applied

Scientific EffectMicrowave resonance: Resonance

Implementation Method 3

a power monitoring unit configured to measure a reflected microwave reflected from the resonator and input into the oscillator

Methodology Applied

Scientific EffectElectromagnetic reflection: Reflection

Data Source

PatentEP4516140B1Aerosol generating device using microwaves and control method thereof

Publication Date: 2026.01.21 KT&G CO LTD

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AI summary

An aerosol generating device includes a oscillator configured to generate a microwave, a resonator including an accommodation space accommodating an aerosol generating article, the resonator configured to heat the aerosol generating article by resonating the microwave, a power monitoring unit configured to measure a reflected microwave reflected from the resonator and input to the oscillator, and a processor configured to determine a type of the aerosol generating article based on the reflected microwave measured by the power monitoring unit.