Aerosol Cover Contact Electrode Detection Against Heating Noise
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Solution Overview
Problem
Aerosol generating devices face recognition errors when determining if the cover is detached due to heating noise interference, which can lead to user safety issues and inaccurate connection states between electrodes.
Innovation Solution
The device employs a physical method using contact electrodes on the main body and cover, with magnetic substances, to determine the cover's attachment status by detecting signal level changes, ensuring accurate electrical connections and improved connection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an inductive sensor is used to determine whether the cover is detached, then the detection function is provided, but recognition errors occur due to heating noise
Solution Approach 1:
The patent replaces the inductive sensor (electromagnetic field-based detection) with a mechanical contact electrode system. The contact electrodes physically contact the cover when attached, providing a mechanical detection method that is immune to heating noise interference, thus resolving the contradiction between detection functionality and reliability under heating conditions.
2Reliability
If contact electrodes are used to determine cover attachment, then detection reliability is improved, but connection accuracy between electrodes may be insufficient
Solution Approach 1:
The patent introduces a conductive adhesive as an intermediary substance between the contact electrodes and the cover. This adhesive ensures reliable electrical connection and improves contact accuracy by filling gaps and ensuring uniform contact pressure, while maintaining the mechanical detection reliability of the cover attachment status.
3Measurement precision
If magnetic substances are added to electrodes, then connection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges the magnetic substance function directly into the contact electrode structure by coating or embedding magnetic particles in the conductive adhesive layer. This integration improves connection accuracy through magnetic attraction forces without requiring separate magnetic components, thus minimizing the increase in device complexity.
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 effectively reduces recognition errors caused by heating noise and enhances the connection accuracy between the electrodes, ensuring reliable operation and user safety by physically confirming the cover's detachment.
Implementation Method 1
a controller configured to determine that the cover is mounted on the main body when the 1-1st contact electrode and the 1-2nd contact electrode are electrically connected to each other
Implementation Method 2
connection accuracy of an electrode arranged in a semi-exterior portion and an electrode arranged in a cover and an operating method of the aerosol generating device, according to an embodiment, includes transmitting an output signal of a high level to a general-purpose input and output terminal, receiving an input signal through the general-purpose input and output terminal, and determining, based on a change of the input signal, whether or not the cover and the main body are coupled to each other
Data Source
AI summary
An aerosol generating device includes: a main body including a semi-exterior portion on a surface of which a 1-1st contact electrode and a 1-2nd contact electrode are formed to be apart from each other; a cover detachably coupled to the main body and including a 2-1st contact electrode corresponding to the 1-1st contact electrode and a 2-2nd contact electrode corresponding to the 1-2nd contact electrode; and a controller configured to determine that the cover is mounted on the main body when the 1-1st contact electrode and the 1-2nd contact electrode are electrically connected to each other.