Hall Effect Current Sensor for Aerosol Device Power Control
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Solution Overview
Problem
Existing aerosol delivery devices, such as electronic cigarettes, face challenges in efficiently controlling heating elements to vaporize aerosol precursors without causing over-current or over-voltage conditions, which can lead to unsafe operation.
Innovation Solution
The integration of Hall effect current sensors and a microprocessor to monitor and control the current through conductors connected to heating elements, allowing for precise power management by activating or deactivating the heating element based on measured current levels and calculating a simple moving average power to maintain optimal operation within set power parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating element is activated to vaporize aerosol precursor composition, then the aerosol generation function is improved, but the risk of over-current or over-voltage conditions increases
Solution Approach 1:
The system continuously monitors current through the heating element using a Hall effect sensor and adjusts power delivery based on real-time measurements. The microprocessor receives feedback signals from the sensor and modulates the power supply to maintain current within safe operating limits, preventing over-current conditions while sustaining effective vaporization.
Solution Approach 2:
A Hall effect current sensor is introduced as an intermediary component between the power source and heating element. This non-contact sensor measures current by detecting the magnetic field around the conductor, providing safety monitoring without electrical contact, thus isolating the control circuit from high-current pathways while maintaining reliable over-current protection.
2Reliability
If a Hall effect current sensor is integrated to monitor current, then the operational safety is improved, but the device complexity increases
Solution Approach 1:
The Hall effect sensor serves as a non-intrusive intermediary that measures current without breaking the electrical circuit or requiring series connection. By detecting the magnetic field generated by current flow, the sensor provides monitoring capability while maintaining circuit integrity and minimizing modifications to the existing power delivery pathway.
Solution Approach 2:
The system replaces traditional mechanical current sensing methods (such as shunt resistors or series-connected current transformers) with a magnetic field-based Hall effect sensor. This substitution eliminates the need for direct electrical contact with high-current paths, reducing wear, heat generation, and circuit disruption while providing accurate current measurement for safety control.
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 solution ensures safe and efficient vaporization of aerosol precursors by preventing over-current or over-voltage conditions, enhancing the reliability and safety of the aerosol delivery device.
Implementation Method 1
a Hall effect current sensor positioned proximate a conductor of the one or more conductors, and configured to measure to a current through the conductor
Implementation Method 2
a heating element; a control component configured to operate in an active mode in which the control component is configured to control the heating element to activate and vaporize components of the aerosol precursor composition
Data Source
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AI summary
An aerosol delivery device is provided that includes a housing defining a reservoir configured to retain aerosol precursor composition. The aerosol delivery device also includes a plurality of electronic components interconnected by or connected to one or more conductors, and these electronic components include a heating element, a control component and a Hall effect current sensor. The control component is configured to operate in an active mode in which the control component is configured to control the heating element to activate and vaporize components of the aerosol precursor composition. The Hall effect current sensor is positioned proximate a conductor of the one or more conductors, and configured to measure to a current through the conductor. And the control component is configured to control operation of at least one functional element of the aerosol delivery device in response to the current so measured.