Processor Validated Wakeup System Using RF Pulse Analysis
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Solution Overview
Problem
Existing power management systems for wireless networks consume unnecessary battery power due to periodic wake-ups and time-consuming synchronization processes, even when devices are in sleep mode.
Innovation Solution
A system with a transceiver and processor that validates wake-up signals by analyzing RF pulses, transitioning from sleep mode to active mode only upon valid signal validation, minimizing power consumption by using a non-powered RF detector and directional coupler for passive signal conversion to DC pulses, and powering up components only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver powers up on a schedule to check for signals, then the device can receive external requests, but battery power is consumed during periodic wake-ups
Solution Approach 1:
The system is divided into two separate components: a wake-up receiver that remains in sleep mode and a main transceiver that is fully powered. The wake-up receiver handles only the function of detecting wake-up signals, while the main transceiver handles data communication. This segmentation allows the main transceiver to remain powered off during idle periods, eliminating periodic power consumption while maintaining the ability to receive requests.
Solution Approach 2:
A wake-up receiver acts as an intermediary component between the external environment and the main transceiver. It remains in a low-power state and only activates the main transceiver when a valid wake-up signal is detected. This intermediary approach allows the system to maintain reliability for receiving external requests while minimizing battery power consumption during idle periods.
2Ease of operation
If the receiver powers up on a schedule, then the device can be available to receive signals, but time is lost during synchronization and security verification
Solution Approach 1:
The wake-up receiver performs preliminary action by continuously monitoring for wake-up signals in a low-power state without requiring full system activation. When a wake-up signal is detected, only the necessary components are activated, avoiding the time-consuming process of full synchronization and security verification that would occur with scheduled wake-ups. The system is available to receive signals through the wake-up receiver's continuous monitoring capability.
3Use of energy by moving object
If the processor validates wake-up signals by analyzing pulses, then power consumption is reduced by avoiding unnecessary wake-ups, but the validation process requires processor activation
Solution Approach 1:
The wake-up receiver performs only the minimal necessary action of detecting and validating wake-up signal pulses without fully activating the processor. The validation mechanism analyzes specific pulse characteristics to determine if a wake-up signal is legitimate, activating the processor only when validation succeeds. This partial action approach reduces power consumption while maintaining security against false wake-ups.
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 significantly reduces power consumption during non-use periods, extending battery life and reducing synchronization times by ensuring only valid wake-up signals activate the system.
Implementation Method 1
the system comprises an RF detector for converting the RF wake up signal to DC pulses to be evaluated with processor
Data Source
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AI summary
A system includes a transceiver for receiving a wake up signal from a wireless communication device. A processor is operatively connected to the transceiver and to a memory. The memory includes instructions recorded thereon that, when read by the processor, cause the processor to transition from a sleep mode to an active mode and power up the transceiver upon validation of the wake up signal.