Aerosol Heater Control Using Cigarette Type Detection
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Solution Overview
Problem
Existing aerosol generating devices fail to optimize the heating process for different types of cigarettes, leading to an unsatisfactory smoking experience due to the use of a single temperature profile without considering the specific characteristics of the inserted cigarette.
Innovation Solution
An aerosol generating device that identifies the type of cigarette inserted and controls the heater's temperature profile based on the detected temperature change trends during a preheating section, using a controller to adjust heating in the smoking section accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single temperature profile is used for heater control, then the device structure is simple, but the smoking experience is unsatisfactory due to lack of optimization for different cigarette types
Solution Approach 1:
The system performs preliminary identification of cigarette type during a preheating section before the actual smoking section. By detecting temperature change trends in advance and identifying the cigarette type early, the system prepares the appropriate temperature profile beforehand, enabling optimized heating without adding significant complexity to the overall control structure
Solution Approach 2:
The temperature profile is made dynamic and adjustable based on the identified cigarette type. Instead of using a fixed single temperature profile, the system selects from multiple pre-defined temperature profiles (first, second, third temperature profiles) according to the detected cigarette characteristics, allowing the heating parameters to adapt dynamically to different cigarette types
2Ease of operation
If temperature profiles are tailored for each cigarette type, then smoking sensation is optimized, but the control system becomes more complex requiring cigarette type identification
Solution Approach 1:
The system performs self-identification of cigarette type by automatically detecting temperature change trends during the preheating section. No separate user input or manual selection is required - the system autonomously identifies the cigarette type based on the thermal characteristics observed during initial heating, and automatically selects the appropriate temperature profile for the smoking section
Solution Approach 2:
The system uses feedback from temperature sensors to monitor temperature change trends during preheating. By continuously detecting the thermal response of the cigarette to heating and comparing it against expected patterns, the system identifies the cigarette type and adjusts the subsequent heating profile accordingly, creating a closed-loop control system that optimizes smoking experience
3Extent of automation
If a preset temperature range is used for identification, then the identification process is simple, but the temperature control precision may be insufficient
Solution Approach 1:
The temperature detection process is segmented into distinct phases: a preheating section for identification and a smoking section for optimized heating. Within the preheating section, the system further segments the analysis by focusing on specific temperature change trends and patterns. This segmentation allows the system to use a preset temperature range for practical identification while maintaining sufficient precision by analyzing the temporal pattern of temperature changes rather than relying solely on absolute temperature values
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
Provides an optimized smoking sensation for each cigarette type without additional user input by tailoring the heating process to the specific characteristics of the inserted cigarette, enhancing user experience.
Implementation Method 1
a heater assembly configured to, when a cigarette is inserted into the aerosol generating device, heat the cigarette to generate an aerosol
Implementation Method 2
a temperature sensor configured to sense a temperature of the heater assembly in the preheating section and the smoking section
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
Provided are an aerosol generating device and a method of controlling the same. When a cigarette is inserted into an aerosol generating device, a heater assembly is used to heat the cigarette to generate an aerosol in a preheating section and a smoking section after the preheating section, a temperature sensor is used to sense a temperature of the heater assembly in the preheating section and the smoking section, and a controller is used to identify a cigarette type of the cigarette, based on a trend in a temperature change within a preset temperature range of the preheating section, and control heating of the heater assembly during the smoking section by using a temperature profile corresponding to the identified cigarette type.