Aerosol Heater Moisture Sensing for Used Consumable Detection
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Solution Overview
Problem
Consumables for aerosol generation devices, such as tobacco sticks, lose structural integrity and moisture after use, leading to potential device malfunction, safety issues, and poor taste, necessitating a method to differentiate between new and used consumables to prevent continued use.
Innovation Solution
An aerosol generation device with a monitoring unit to track moisture content and thermal profiles during heating, using sensors and controllers to detect deviations from predetermined values, generating control signals to interrupt device operation if the consumable is not new.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the consumable is used beyond its intended duration, then the device can continue to operate, but the structural integrity of the consumable deteriorates and safety issues arise
Solution Approach 1:
The monitoring unit measures the observable (such as electrical resistance, capacitance, or other physical properties) before and during heating to predict moisture content in advance. This preliminary detection allows the system to identify consumable depletion before structural failure occurs, enabling preventive interruption of operation.
Solution Approach 2:
The control unit continuously receives feedback from the monitoring unit about the observable parameters and compares them against predetermined thresholds. This closed-loop feedback mechanism enables real-time detection of consumable state changes and automatic interruption when depletion is detected, maintaining reliability throughout the usage duration.
2Productivity
If the consumable is heated repeatedly, then aerosol generation continues, but the moisture content decreases leading to poor taste and degraded performance
Solution Approach 1:
The monitoring unit provides continuous feedback on moisture content (inferred from observable measurements) during aerosol generation. The control unit uses this feedback to detect when moisture content falls below predetermined levels, automatically interrupting heating to prevent taste degradation and maintain consistent product quality throughout the consumable's lifecycle.
3Device complexity
If no monitoring system is implemented, then the device structure remains simple, but safety issues arise from broken consumables causing electrical shorts or flames
Solution Approach 1:
The monitoring unit performs preliminary measurements of the observable before heating begins and during operation to predict consumable state. This advance detection of depletion conditions allows the control unit to interrupt operation before safety hazards such as electrical shorts or flames can occur, providing a cost-effective safety mechanism.
Solution Approach 2:
The monitoring unit acts as an intermediary between the heating system and the consumable, continuously measuring physical properties (electrical resistance, capacitance, or other observables) that indicate consumable state. This intermediary detection system provides early warning of depletion without requiring direct contact with the consumable structure, enabling safe operation.
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
Prevents the use of depleted consumables, enhancing safety and reliability by ensuring only new consumables are used, maintaining device performance and user experience.
Implementation Method 1
The monitoring unit is arranged for monitoring an observable indicative of a moisture content of the aerosol substrate during a heating of the aerosol substrate
Implementation Method 2
The monitoring unit is arranged for monitoring an observable indicative of a moisture content of the aerosol substrate during a heating of the aerosol substrate
Implementation Method 3
a heating arrangement for heating the aerosol substrate
Implementation Method 4
a heating arrangement for heating the aerosol substrate
Data Source
Figure 1
Figure 2
Figure 3~4A
AI summary
An aerosol generation device comprising a receptacle for receiving a consumable comprising an aerosol substrate; a heating arrangement for heating the aerosol substrate; and a controller. The controller comprises a monitoring unit for monitoring an observable indicative of a moisture content of the aerosol substrate during a heating of the aerosol substrate; a detection unit for detecting, based on the monitored observable, an indication that the moisture content is different from a predetermined moisture content; and a signaling unit for generating, based on the detected indication, a control signal for interrupting an operation of the device. A method for controlling an aerosol generation device and a computer program.