Inhaling Device User Recognition via Puff Behavior
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Solution Overview
Problem
Current electronic cigarettes lack a mechanism to prevent unauthorized use, particularly by minors, and existing user identification systems are too bulky or expensive for integration into small devices.
Innovation Solution
A method and device that authenticate users based on their puffing behavior by recording and comparing gas flow measurements with a user-specific puff signature, enabling or disabling device operation based on a correlation score, and allowing multiple users to be authorized with customizable operation settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional user identification systems (fingerprint, face recognition, etc.) are integrated into inhaling devices, then user authentication capability is improved, but device size and cost increase
Solution Approach 1:
The patent extracts the authentication function from complex identification systems and implements it using only the existing gas flow sensor data. By taking out the authentication capability from bulky systems and embedding it in the simple act of puff detection, the solution achieves user verification without adding physical complexity or cost to the device
Solution Approach 2:
The patent creates a digital copy of the user's puffing behavior pattern as a unique identifier. Instead of using physical biometric data (fingerprints, facial features), the system copies the characteristic gas flow pattern of each user's puffing style and uses this digital replica for authentication, eliminating the need for complex physical sensors
2Ease of operation
If no user identification mechanism is implemented, then device simplicity is maintained, but unauthorized use cannot be prevented
Solution Approach 1:
The system uses the user's own natural puffing behavior as the authentication mechanism. The user's unique gas flow pattern, which naturally occurs during normal operation, serves as the identification key. This self-service approach allows the device to authenticate users without adding external complexity or requiring the user to interact with additional authentication components
Solution Approach 2:
The gas flow sensor, originally designed solely to detect puffing for device operation control, is given a dual function: it continues to detect puffs for aerosol generation while simultaneously capturing unique authentication data. This multi-functionality allows the same component to serve both operational and security purposes without adding extra hardware
Data Source
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AI summary
A method of controlling operation of an inhaling device, the inhaling device comprising a gas flow path through which gas can be drawn by the action of a user puff, a gas flow sensor within the gas flow path and a memory, the method comprising: recording gas flow measurements from the gas flow sensor; comparing the gas flow measurements with the user puff signature stored in memory to provide a correlation score; and enabling or disabling further operation of the device based on a value of the correlation score. This method allows an inhaling device, such as an electrically operated smoking device or a medical inhaler to authenticate a user of the device based on a detected puffing behaviour.