Piezo Battery Deformation Sensing for Aerosol Device Safety
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Solution Overview
Problem
Existing aerosol delivery devices, such as electronic cigarettes, lack advanced electronics for enhanced usability and safety features, particularly in monitoring the power source's mechanical integrity and providing user feedback.
Innovation Solution
Incorporating a piezo sensor within the power source to detect deformation and generate an electrical response, which is used by processing circuitry to control the device's functionality, such as disabling operation or providing user feedback when mechanical stress or damage is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a piezo sensor is incorporated within the power source to detect deformation, then safety and reliability are improved, but device complexity increases
Solution Approach 1:
The piezo sensor is embedded within the power source housing, nesting the sensing component inside the existing power source structure. This integration approach adds safety functionality while minimizing external complexity and maintaining a compact form factor.
Solution Approach 2:
The piezo sensor automatically detects deformation of the power source and generates an electrical response that triggers protective actions without requiring external monitoring systems. The sensor enables the power source to self-monitor its own mechanical integrity.
2Reliability
If processing circuitry is added to control device functionality based on sensor data, then reliability is improved, but device complexity increases
Solution Approach 1:
The processing circuitry is integrated with the existing control system of the aerosol delivery device, merging the new deformation-detection functionality with existing control logic. This consolidation approach adds safety features while avoiding separate independent control systems that would increase complexity.
Solution Approach 2:
The processing circuitry receives electrical responses from the piezo sensor and uses this feedback to automatically adjust device operation or trigger protective measures. The feedback mechanism enables automatic safety responses without requiring complex user intervention systems.
3Measurement precision
If the piezo sensor is embedded within the electrochemical cell, then measurement precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The piezo sensor is positioned at specific locations within the power source where deformation is most indicative of safety concerns. This strategic placement optimizes detection accuracy while accommodating standard manufacturing tolerances, rather than requiring precision embedding throughout the entire electrochemical cell structure.
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
Enhances the safety and usability of aerosol delivery devices by ensuring safe operation and user awareness of the power source's condition, preventing potential hazards like battery fracture or malfunction.
Implementation Method 1
a piezo sensor operatively coupled with the power source and the processing circuitry, the piezo sensor configured to generate an electrical response to a deformation of the power source
Data Source
AI summary
An aerosol delivery device includes a power source and an aerosol production component that is powerable to produce an aerosol from an aerosol precursor composition. The aerosol delivery device also includes processing circuitry configured to switchably connect the power source to a load that includes the aerosol production component and thereby power the aerosol production component. A piezo sensor is operatively coupled with the power source and the processing circuitry. The piezo sensor is configured to generate an electrical response to a deformation of the power source, and the electrical response is indicative of a characteristic of the deformation. The processing circuitry is configured to control the aerosol delivery device based at least in part on the characteristic of the deformation indicated by the electrical response.