Pressure Sensor Control in Vaping Devices for Low-Power Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic vaping devices lack efficient mechanisms to dynamically adjust power consumption based on ambient pressure changes, leading to potential inefficiencies and unnecessary energy usage.
Innovation Solution
Incorporating a pressure sensor, such as a MEMS sensor, to measure ambient pressure and adjust read request frequencies based on device operation modes, allowing for reduced power consumption in inactive states and efficient activation upon user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the pressure sensor continuously monitors ambient pressure at high frequency, then the device can detect pressure changes timely and respond to user activation, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the read request frequency based on operational mode. In active mode, high-frequency readings occur to enable timely detection of pressure changes and rapid user activation. In inactive mode, the frequency reduces to conserve power, resolving the contradiction between detection speed and energy consumption
Solution Approach 2:
The pressure sensor operates with periodic read requests rather than continuous monitoring. The controller selectively initiates read requests at different frequencies depending on whether the device is in active or inactive mode, enabling efficient power management while maintaining detection capability when needed
2Use of energy by moving object
If the read request frequency is reduced in inactive modes, then power consumption decreases, but pressure change detection latency increases
Solution Approach 1:
The system transitions between different operational states (active/inactive) with corresponding read request frequencies. When activation is detected or anticipated, the system switches to high-frequency mode, ensuring that the increased latency from low-frequency mode does not impact user experience during actual usage
Solution Approach 2:
The controller changes the temporal parameter (read request frequency) of the pressure sensor based on device state. This parameter adjustment optimizes the balance between power consumption and detection responsiveness, reducing latency concerns during inactive periods while maintaining low power usage
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 power management by reducing energy usage in inactive modes and ensuring timely activation in response to user demands, optimizing battery life and performance.
Implementation Method 1
a pressure sensor configured to measure a current ambient pressure
Implementation Method 2
the pressure sensor is a microelectromechanical system (MEMS) sensor
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.