Inhaler Power Supply PCB Layout for Static Noise Isolation
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Solution Overview
Problem
Existing power supply units for aerosol generation devices do not adequately protect controllers from external noise such as static electricity, leading to potential malfunction or failure.
Innovation Solution
The power supply unit incorporates a design where the controller is isolated from external noise by mounting it on a separate circuit board away from components that can introduce external noise, such as the receptacle and operation switch, which are mounted on different circuit boards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the controller is mounted close to components like receptacle and operation switch to simplify the device structure, then device complexity is reduced, but the controller becomes vulnerable to external noise such as static electricity causing malfunction or failure
Solution Approach 1:
The device is divided into multiple circuit boards: the first circuit board contains noise-sensitive components (controller, MCU), while the second circuit board contains noise-generating components (receptacle, operation switch). This segmentation physically separates components to prevent noise interference while maintaining overall device integration.
Solution Approach 2:
The controller and other noise-sensitive components are extracted from the same circuit board as the receptacle and operation switch. By placing the controller on a separate first circuit board while the receptacle and operation switch remain on the second circuit board, the design extracts vulnerable components from the noise-prone environment.
2Reliability
If the controller is isolated from noise-sensitive components by mounting on separate circuit boards to improve reliability, then the controller is protected from external noise, but the device structure becomes more complex
Solution Approach 1:
Different regions of the device have different functional qualities: the first circuit board is designed with high noise sensitivity (housing the controller), while the second circuit board is designed with higher noise tolerance (housing receptacle and switches). This local quality differentiation optimizes each region for its specific functional requirements.
Solution Approach 2:
The circuit boards themselves act as intermediaries that provide both electrical connection and physical separation. The separation between first and second circuit boards creates a natural noise barrier while still allowing necessary signal and power transmission between components.
Data Source
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AI summary
An inhaler comprising a detachable heating unit; a power supply; a case; a chassis accommodated in an internal space of the case; a plurality of magnets arranged with a gap therebetween and held by the chassis; an inner member covering a side surface of the chassis; an outer member covering an outer surface of the inner member, wherein the outer member is replaceably fixed to the case by said plurality of magnets held by the chassis so as to cover an outer surface of the inner member.