Induction Susceptor Calibration for Aerosol Temperature Control
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Solution Overview
Problem
Conventional aerosol generating devices face challenges in accurately calibrating optimal control criteria for replaceable heating units due to manufacturing tolerances, requiring manual user input and increasing power consumption for automatic calibration.
Innovation Solution
An aerosol generating device with a power supply unit, power conversion unit, induction coil, and controller that determines the temperature of a replaceable susceptor by generating an alternating magnetic field, allowing for automatic calibration based on a preset power profile and reference current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic calibration is implemented to eliminate manual user input, then ease of operation is improved, but power consumption increases due to periodic detection of heating unit replacement
Solution Approach 1:
The controller performs calibration detection at specific periodic intervals (e.g., when a predetermined number of puffs are accumulated or at scheduled times) rather than continuously monitoring. This periodic action reduces power consumption while still achieving reliable calibration timing.
Solution Approach 2:
The system automatically detects heating unit replacement and initiates calibration without requiring manual user input or intervention. The controller monitors detection signals from the heating unit and autonomously determines when calibration is needed, eliminating the need for users to manually trigger calibration procedures.
2Measurement precision
If calibration is performed for each replaceable heating unit to account for manufacturing tolerances, then temperature determination accuracy is improved, but device complexity increases due to additional calibration operations
Solution Approach 1:
The system automatically detects heating unit replacement and initiates calibration without requiring manual user input or intervention. The controller monitors detection signals from the heating unit and autonomously determines when calibration is needed, eliminating the need for users to manually trigger calibration procedures.
Solution Approach 2:
The controller uses detection signals from the heating unit to feedback information about replacement status and calibration requirements. This feedback mechanism enables the system to automatically adjust its operation based on the specific heating unit installed, maintaining accuracy without increasing user-facing complexity.
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 accurate temperature determination and automatic calibration of replaceable heating units, reducing power consumption and improving user convenience.
Implementation Method 1
an induction coil configured to receive the AC power and generate an alternating magnetic field
Implementation Method 2
a first susceptor that is replaceably inserted into an insertion space and is configured to generate heat due to the alternating magnetic field generated by the induction coil
Data Source
AI summary
When a first susceptor is extracted from an insertion device and then a second susceptor different from the first susceptor is inserted into the insertion space, an aerosol generating device controls a power supply unit according to a preset power profile to obtain calibration reference current corresponding to a calibration reference temperature of the second susceptor, and determines a temperature of the second susceptor based on the calibration reference temperature and the calibration reference current.