Mobile Device Orientation Detection Reducing Power Consumption
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Solution Overview
Problem
Modern mobile devices consume excessive power due to sensor activation during periods of movement, even when not in use, leading to unnecessary battery drain.
Innovation Solution
A method utilizing an accelerometer to detect movement and calculate the orientation of a mobile device, maintaining the display and image capture device in an off state unless the device is determined to be in a landing position, thereby reducing power consumption by minimizing false activations and using only accelerometer data to conserve battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensors are activated to detect movement and rotation, then the mobile device can respond to user actions, but the device consumes excessive power during periods when not in use
Solution Approach 1:
The system dynamically adjusts sensor activation based on device state. The accelerometer continuously monitors device movement and orientation, activating the display and image capture device only when the device is determined to be in a viewing orientation (landing position), rather than maintaining constant sensor activation
Solution Approach 2:
The system uses the accelerometer data to automatically determine device orientation and trigger appropriate actions without user intervention. The device self-manages power consumption by autonomously deciding when to activate or deactivate components based on its own motion state
2Ease of operation
If the display and image capture device are activated upon any movement detection, then the device responds to user actions, but false activations occur during incidental movements
Solution Approach 1:
The system implements a feedback mechanism where the accelerometer continuously provides orientation data, the system processes this data to determine if the device is in a landing position, and adjusts component activation accordingly. This closed-loop approach ensures activation occurs only when appropriate viewing orientation is detected
Solution Approach 2:
The system changes the parameter for activation from simple movement detection to orientation-based activation. By monitoring the specific parameter of device orientation (landing position determination) rather than just movement presence, the system distinguishes between intentional user actions and incidental movements
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 approach effectively reduces power consumption by ensuring the image capture device and display remain off during non-viewable orientations, thereby extending battery life and minimizing false activations due to incidental movements.
Implementation Method 1
detecting, via an accelerometer within a mobile device, movement of the mobile device
Data Source
AI summary
A method, a mobile device, and a computer program product for determining orientation of a mobile device. The method includes detecting, via an accelerometer, movement of a mobile device and calculating, by a processor, an orientation of the mobile device based on accelerometer data received from the accelerometer as the mobile device is moving. The method further includes tracking the orientation of the mobile device as the mobile device moves over a period of time and maintaining an image capture device and a display in an off state, while the mobile device is moving. The method further includes determining if the mobile device is in a landing position, based, at least partially, on the calculated orientation of the mobile device and in response to determining that the mobile device is not in the landing position, continuing to maintain the image capturing device in the off state such that power consumption of the mobile device is reduced.