HNB Device Capsule Reuse Detection via Preheat Power Monitoring
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Solution Overview
Problem
Heat-not-burn aerosol-generating devices face challenges in authenticating and detecting the integrity and reuse of capsules, which affects the quality and safety of the aerosol produced.
Innovation Solution
A non-combustible aerosol-generating device equipped with a controller that preheats an aerosol-forming substrate and determines its authenticity or degradation by comparing power levels, terminating power application or generating a fault indication if the capsule is deemed inauthentic or degraded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device uses simple capsule insertion without authentication, then ease of operation is improved, but reliability deteriorates due to inability to detect reused or inauthentic capsules
Solution Approach 1:
The device performs preliminary heating actions during a preheat period before actual aerosol generation. By applying power to the heater during this preheat phase and monitoring power consumption, the system detects capsule authenticity and integrity before the capsule is fully consumed, preventing reuse of compromised capsules
Solution Approach 2:
The controller monitors power consumption during the preheat period and compares it against expected thresholds. This feedback mechanism provides information about capsule authenticity and detects when a capsule has been previously heated or is inauthentic, enabling the device to reject compromised capsules
2Reliability
If the device implements power level monitoring during preheat, then reliability is improved through capsule authentication, but device complexity increases
Solution Approach 1:
The capsule itself provides authentication information through its power consumption characteristics during heating. The system leverages the capsule's inherent thermal and electrical properties to self-authenticate, eliminating the need for separate authentication hardware or complex verification mechanisms
Solution Approach 2:
The system monitors changes in power consumption parameters during the preheat period to detect capsule authenticity and reuse status. By tracking power level variations and comparing them against predefined thresholds, the device achieves reliable authentication using simple parameter comparison logic
3Measurement precision
If the device extends heating time for authentication, then measurement precision is improved, but productivity deteriorates due to longer operation cycles
Solution Approach 1:
The device applies excessive heating power during a limited preheat period to rapidly heat the capsule substrate. This partial heating action is sufficient for authentication purposes without completing full aerosol generation, enabling quick detection while maintaining measurement precision through controlled power application
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
Ensures the device only operates with authentic and unaltered capsules, maintaining aerosol quality and safety by preventing the use of reused or compromised materials.
Implementation Method 1
apply power to a heater to preheat an aerosol-forming substrate
Data Source
AI summary
A non-combustible aerosol-generating device includes a memory storing computer-readable instructions and a controller. The controller is configured to execute the computer-readable instructions to cause the non-combustible aerosol-generating device to: apply power to a heater to preheat an aerosol-forming substrate; determine whether a preheat monitor timer has exceeded a preheat timer threshold; determine whether the aerosol-forming substrate has been previously heated based on a comparison between a first threshold power level and an applied power to the heater in response to the preheat monitor timer having not exceeded the preheat timer threshold; and determine whether the aerosol-forming substrate has been previously heated based on a comparison between a second threshold power level and the applied power to the heater in response to the preheat monitor timer having exceeded the preheat timer threshold.