Aerosol Cartridge Coupling Detection via Heater Temperature Feedback
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Solution Overview
Problem
Aerosol-generating devices face challenges in improving gas flow efficiency and accurately determining cartridge coupling, as well as managing data based on cartridge state.
Innovation Solution
The device includes a cartridge with a chamber for liquid storage, a wick, and a heater, where a controller monitors temperature variations to determine cartridge coupling and manage data accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the cartridge is detached from the body, then the heater temperature cannot be monitored accurately, but the device cannot determine whether the cartridge is coupled or not
Solution Approach 1:
The system uses its own heater temperature monitoring capability to detect cartridge coupling status. When the cartridge is coupled, the heater temperature can be monitored; when detached, the temperature cannot be monitored. This self-service approach eliminates the need for separate detection mechanisms.
Solution Approach 2:
The controller continuously monitors heater temperature and uses this feedback to determine cartridge coupling status. The temperature monitoring serves dual purposes: both heating control and coupling detection, creating a closed-loop feedback system that resolves the detection problem without additional complexity.
2Adaptability or versatility
If the heater is used for both heating and temperature monitoring, then the dual function is achieved, but the temperature monitoring may be affected by heating interference
Solution Approach 1:
The controller monitors the heater temperature at specific timing points (before heating starts and during heating) to establish baseline temperature values. This preliminary monitoring allows the system to distinguish between temperature changes caused by heating and those indicating cartridge coupling status.
Solution Approach 2:
The system performs temperature monitoring at selected intervals rather than continuously, and uses temperature thresholds to determine coupling status. This partial monitoring approach reduces the impact of heating interference while maintaining sufficient detection accuracy.
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 enhances gas flow efficiency and accurately detects cartridge coupling, enabling effective data management based on cartridge state.
Implementation Method 1
a heater configured to heat the wick
Implementation Method 2
a wick connected to the chamber and a heater configured to heat the wick
Data Source
AI summary
An aerosol-generating device is disclosed. The aerosol-generating device of the disclosure includes a cartridge having a chamber formed therein to store a liquid, a body coupled to the cartridge, and a controller. The cartridge includes a wick connected to the chamber and a heater configured to heat the wick. The controller monitors the temperature of the heater for a predetermined time when the body and the cartridge are coupled to each other, and determines whether the cartridge is a cartridge in use based on variation in the temperature of the heater for the predetermined time.