Pressure Sensor Integration for Aerosol Article and Puff Detection
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Solution Overview
Problem
Aerosol generating devices face challenges in reducing size due to the need for separate sensors to detect aerosol generating article insertion and user puffs, increasing design restrictions.
Innovation Solution
An aerosol generating apparatus uses a single pressure sensor to determine both aerosol generating article insertion and user puffs by monitoring pressure changes in an accommodation portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate sensors are provided to detect article insertion and user puffs, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The pressure sensor is designed to perform multiple detection functions: it detects both article insertion/removal events and user puff events by monitoring pressure changes in the accommodation portion. This multi-functional approach eliminates the need for separate sensors, reducing device complexity while maintaining detection reliability through a single integrated sensing mechanism.
Solution Approach 2:
The patent combines the functions of article detection and puff detection into a single pressure sensor system. By merging these previously separate sensing functions into one component, the overall device complexity is reduced while the integrated pressure monitoring continues to provide reliable detection for both operations.
2Measurement precision
If separate sensors are provided for article detection and puff detection, then measurement precision is improved, but device size increases
Solution Approach 1:
The pressure sensor serves dual purposes by detecting both article presence and user puffs through pressure change analysis. This eliminates the need for multiple separate sensors, thereby reducing device size while maintaining precise detection capabilities for both article insertion and puff events through the same sensing component.
Solution Approach 2:
By merging article detection and puff detection functions into a single pressure sensor, the patent reduces the overall device size. The integrated sensor eliminates the space required for multiple separate sensors while continuing to provide precise measurement for both detection tasks through unified pressure monitoring.
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 approach allows for a reduction in device size by eliminating the need for multiple sensors, while effectively detecting article insertion and puffs.
Implementation Method 1
a pressure sensor configured to detect pressure in the accommodation portion
Data Source
AI summary
According to an embodiment, an aerosol generating apparatus includes an accommodation portion configured to accommodate an aerosol generating article, a pressure sensor configured to detect pressure in the accommodation portion, and a controller configured to determine whether the aerosol generating article is inserted into or removed from the accommodation portion and whether a user's puff has occurred on the aerosol generating article, based on whether pressure detected by the pressure sensor is increased or reduced from a reference value.