Wearable Screen Wake-Up via Illuminance and Motion Detection
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Solution Overview
Problem
Wearable devices often unnecessarily turn on their screens due to user movements, reducing their endurance capabilities as they wake up from lifting operations, such as greeting, which is not intended for device usage.
Innovation Solution
A screen wake-up method that monitors illuminance and motion characteristics to determine if a user intentionally interacts with the device, only turning on the screen when specific contact conditions are met, using an ambient light sensor and motion sensors to differentiate between intended use and accidental movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the screen is woken up by identifying user lifting operations, then the screen can be activated when the user needs to use the device, but the screen is unnecessarily turned on during non-usage lifting operations (e.g., greeting), reducing device endurance
Solution Approach 1:
The patent introduces an ambient light sensor as an intermediary detection component that monitors illuminance changes at a specific position on the wearable device. This intermediary sensor provides additional information to distinguish between intentional wake-up gestures and incidental movements, allowing the system to make more accurate decisions about when to activate the screen, thereby reducing unnecessary energy consumption while maintaining responsive wake-up functionality
2Device complexity
If the screen wake-up relies solely on motion detection, then the implementation is simple, but the accuracy of distinguishing intentional use from accidental movement is insufficient
Solution Approach 1:
The patent merges two different detection approaches: ambient light sensing (monitoring illuminance changes) and motion sensing (monitoring acceleration changes). By combining these two independent detection mechanisms, the system achieves higher measurement precision in identifying intentional contact operations. The ambient light sensor detects blockage of light at a specific position, while the motion sensor detects characteristic acceleration patterns, and both must indicate a contact operation for the screen to wake up, significantly reducing false activations
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 method ensures the screen only wakes up when the user intends to use the device, reducing unnecessary energy consumption and enhancing the endurance of wearable devices by accurately matching wake-up events with user needs.
Implementation Method 1
performing an illuminance monitoring operation on a set position of the wearable device to obtain illuminance data
Implementation Method 2
monitoring a motion characteristic parameter of the wearable device includes: obtaining acceleration data of the wearable device
Data Source
AI summary
A screen wake-up method, which is applied to a wearable device. The method includes: when a screen of a wearable device is in a turned-off state, performing an illuminance monitoring operation on a set position of the wearable device to obtain illuminance data (S10); identifying a contact operation corresponding to the set position according to the illuminance data (S20); and when the contact operation satisfies the set contact condition corresponding to screen wake-up, controlling the screen to be switched to a turned-on state (S30). Further disclosed are a wearable device and a readable storage medium, which may improve the endurance capabilities of the wearable device.