Sleeping Device Wake-Up via RF Signal Lock
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Solution Overview
Problem
Electronic devices in sleep mode often lose functionality and cannot receive network updates or perform tasks like recording instructions, necessitating a balance between power conservation and maintaining functionality.
Innovation Solution
A sleeping device can be configured to lock onto a predetermined RF frequency and detect changes in signal characteristics, such as signal-to-noise ratio or power levels, as a wake-up signal, allowing it to awaken dynamically while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a device is placed in sleep mode to conserve power, then power consumption is reduced, but the device loses functionality and cannot receive network updates or perform tasks
Solution Approach 1:
The device is segmented into different operational states: fully awake state for complete functionality, sleep mode for power conservation with limited functionality, and wake configuration for selective activation. The RF tuner is locked to a predetermined frequency while other components remain deactivated, allowing the device to maintain minimal functionality for receiving wake signals while conserving power.
Solution Approach 2:
The device performs preliminary action by locking the RF tuner to a predetermined RF frequency before entering sleep mode. This preliminary configuration allows the device to be ready to receive wake signals without requiring full system activation, thus maintaining functionality while conserving power.
2Reliability
If a device remains fully active to maintain functionality, then the device can receive network updates and perform tasks, but power consumption increases
Solution Approach 1:
The device applies partial action by activating only the necessary components for receiving wake signals (RF tuner locked to predetermined frequency) while leaving other components (digital decoder, processor) deactivated. This partial activation maintains minimal functionality for network communication while significantly reducing power consumption compared to full activation.
3Reliability
If a device uses conventional wake-up methods requiring full activation, then the device can receive wake signals, but power consumption increases and functionality is lost during sleep
Solution Approach 1:
The wake-up capability is extracted from the full system activation process. The RF tuner is locked to a predetermined frequency and configured to detect specific signal patterns independently of the main processing system. This extraction allows the device to receive wake signals without requiring full system activation, thus maintaining wake-up capability while reducing power consumption.
Data Source
AI summary
Disclosures related to waking a sleeping device while minimizing active components needed to receive a remote wakeup request. In one aspect, devices having an RF tuner, may be configured to detect a digital or an analog signal variation or change in RF signal characteristics. Further, the variation or change may be interpreted as a wakeup signal.