Inductive Cigarette Detection for Safe Aerosol Heating Control
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Solution Overview
Problem
Aerosol generating apparatuses face safety issues due to unintended heating when a cigarette is not inserted, leading to potential burns from careless operation or user error, and there is a need for a method to ensure safe heating only when a suitable cigarette is present.
Innovation Solution
The apparatus includes a detector with a coil that measures current characteristic values using electromagnetic induction to determine if a cigarette is inserted, and a controller that compares these values with predetermined reference values to control the heating unit's operation, ensuring it only heats when a suitable cigarette is present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heating unit is activated without proper detection, then the apparatus can operate continuously, but user safety is compromised due to unintended heating and potential burns
Solution Approach 1:
The detector with coil performs preliminary detection of the cigarette's presence and characteristics before the heating unit is activated. The controller compares the detected current characteristic value with a reference value to confirm proper insertion, ensuring the heating operation only proceeds when a suitable cigarette is detected, thereby preventing unintended heating and ensuring user safety.
2Loss of energy
If the heating unit operates without verification, then the apparatus maintains continuous readiness, but energy is wasted heating without a cigarette
Solution Approach 1:
The detector continuously monitors the current characteristic value of the coil, providing feedback to the controller about the presence and suitability of the inserted cigarette. The controller uses this feedback to intelligently control the heating unit, activating it only when the detected value matches the reference value for a suitable cigarette, thereby eliminating wasteful heating while maintaining operational readiness.
3Measurement precision
If a simple presence detection method is used, then the device complexity is reduced, but measurement precision is insufficient to distinguish suitable cigarettes
Solution Approach 1:
The patent replaces complex mechanical or optical detection systems with an electromagnetic detection system using a coil and electromagnetic induction. This substitution achieves high measurement precision in distinguishing suitable cigarettes through electrical parameter measurement (current characteristic value comparison) while keeping the device structure relatively simple and maintenance-free.
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
This solution secures user safety by preventing heating unless a cigarette is correctly inserted, reducing wasteful heating and power consumption, and enhancing smoking satisfaction by ensuring the apparatus only operates with a suitable cigarette.
Implementation Method 1
a detector that includes a coil and measures a current characteristic value of a current flowing through the coil according to predetermined time information
Implementation Method 2
a heating unit configured to heat the cigarette
Data Source
AI summary
According to an embodiment, there is provided an aerosol generating apparatus including a case into which a cigarette including an electromagnetic inductor is insertable, a heating unit configured to heat the cigarette, a detector that includes a coil and measures a current characteristic value of a current flowing through the coil according to predetermined time information, and a controller that controls operation of the heating unit by comparing the current characteristic value measured by the detector with a predetermined reference current characteristic value, wherein the reference current characteristic value is set based on at least one current characteristic value measured by the detector.