Mobile Device Acceleration Sensor Power Control
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Solution Overview
Problem
Mobile devices face inefficiencies in power management and communication connectivity, as they constantly search for Wi-Fi base stations while in motion, leading to increased power consumption and reduced user convenience.
Innovation Solution
Incorporating an acceleration sensor to detect changes in movement states, a controller manages the communication unit's power, turning it off during motion and on when stationary, optimizing power usage and connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication unit constantly searches for Wi-Fi base stations, then communication connectivity is maintained, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the communication unit's operational state changeable based on movement conditions. The controller dynamically switches the communication unit between active and inactive states according to acceleration sensor data, allowing the system to adapt its power consumption characteristics to current operational needs while maintaining connectivity when necessary.
Solution Approach 2:
The patent changes the operational parameter of the communication unit (power state) based on movement parameters detected by the acceleration sensor. When movement is detected, the communication unit transitions to a low-power or inactive state; when stationary, it transitions to an active state for Wi-Fi base station searching, thus optimizing power consumption while maintaining communication capability.
2Use of energy by moving object
If the communication unit is turned off during motion, then power consumption is reduced, but communication connectivity may be lost
Solution Approach 1:
The patent implements feedback by continuously monitoring acceleration sensor data and using this information to control the communication unit's power state. The controller receives feedback from the acceleration sensor about movement conditions and adjusts the communication unit's operational state accordingly, creating a closed-loop control system that optimizes power consumption while maintaining connectivity when appropriate.
3Adaptability or versatility
If the communication unit searches for Wi-Fi base stations while moving, then connectivity opportunities are increased, but power is wasted unnecessarily
Solution Approach 1:
The patent applies preliminary action by detecting movement states in advance and proactively controlling the communication unit's power state before Wi-Fi base station searching would occur. The acceleration sensor detects movement conditions, and the controller preemptively switches the communication unit to a low-power state, preventing unnecessary power consumption before it can occur during base station searching.
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 reduces power consumption and enhances user convenience by intelligently managing communication unit power based on the device's movement state, ensuring efficient Wi-Fi connectivity when stationary.
Implementation Method 1
an acceleration sensor configured to detect acceleration value
Data Source
AI summary
A mobile phone according to an embodiment includes an acceleration sensor, a communication unit, and a controller. The acceleration sensor detects acceleration value. The communication unit performs communication. When determining that a moving state changes to a stopped state based on the acceleration value detected by the acceleration sensor, the controller is configured to cause power of the communication unit to turn on.