Vaping Pressure Sensor Control for Battery and Heat Management
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Solution Overview
Problem
Electronic vaping devices lack efficient mechanisms to dynamically adjust power consumption based on ambient pressure changes, leading to potential over-heating and inefficient battery usage.
Innovation Solution
Incorporating a microelectromechanical system (MEMS) pressure sensor and a controller that adjusts the read request frequency for ambient pressure measurements, determining a baseline pressure, and switching between active and reduced power modes based on pressure changes, thereby optimizing power usage and preventing over-heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous pressure monitoring is implemented to detect ambient pressure changes, then device reliability and safety are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of pressure sensor read request frequency based on operational mode. In active mode, the controller increases read request frequency to frequently monitor pressure changes for safety-critical operations. In reduced power mode, the controller decreases read request frequency to minimize power consumption while maintaining adequate safety monitoring. This dynamic frequency adjustment resolves the contradiction between reliability and power consumption.
Solution Approach 2:
The patent changes the parameter of pressure measurement frequency based on device state. The controller adjusts the read request frequency parameter from the pressure sensor according to whether the device is in active or reduced power mode. This parameter change allows the system to optimize the balance between safety monitoring (reliability) and energy usage (power consumption) under different operating conditions.
2Speed
If high frequency pressure readings are taken to quickly detect pressure changes, then response time is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the read request frequency to match operational requirements. During active vaping operations, high frequency readings are performed to quickly detect pressure changes and respond rapidly. During idle or reduced power states, the frequency is lowered to conserve battery energy. This dynamic adaptation resolves the trade-off between detection speed and power consumption.
Solution Approach 2:
The patent implements periodic pressure readings with variable periods based on operational mode. Instead of continuous high-frequency monitoring, the system uses periodic sampling at adjusted intervals. In active mode, shorter periods enable rapid detection; in reduced power mode, longer periods reduce energy consumption while maintaining acceptable response capability.
3Ease of operation
If the device operates in active mode continuously to maintain responsiveness, then user experience is improved, but battery life decreases
Solution Approach 1:
The controller dynamically switches between active mode and reduced power mode based on detected pressure changes and operational context. This dynamic mode switching allows the device to maintain responsiveness when needed (improving ease of operation) while conserving battery life during periods when full responsiveness is less critical. The system adapts its operational state to balance user experience and battery duration.
Solution Approach 2:
The patent applies partial action by using reduced power mode with lower read request frequencies during periods when full active monitoring is not required. Instead of continuously operating at full performance level, the system uses just enough monitoring frequency to maintain acceptable functionality, thereby extending battery life while preserving adequate responsiveness.
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 enables the electronic vaping device to efficiently manage power consumption, reduce the risk of over-heating, and extend battery life by dynamically adjusting operational modes in response to ambient pressure changes.
Implementation Method 1
a pressure sensor configured to measure a current ambient pressure
Data Source
AI summary
At least one example embodiment discloses a section of an electronic-vaping device including a pressure sensor configured to measure a current ambient pressure, the pressure sensor further configured to output the current ambient pressure measurement in accordance with a read request frequency, and a controller configured to determine a mode of operation of the electronic-vaping device, control the read request frequency based on the determined mode of operation, and detect a threshold pressure change based on the current ambient pressure and a baseline pressure.