Battery-Powered Camera Resync via Dual Control Architecture
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Solution Overview
Problem
Existing Wi-Fi enabled, battery-powered cameras often remain out-of-sync with their base station due to network interference, leading to delayed re-association and increased power consumption during power cycle synchronization.
Innovation Solution
The camera employs a dual control architecture where a second control architecture periodically checks beacon frames to detect out-of-sync errors, waking the first control architecture for immediate re-sync with the access point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera performs power cycle synchronization to re-associate with the base station, then the out-of-sync state is corrected, but time delays occur and battery power is consumed
Solution Approach 1:
The system performs preliminary detection of the association state by checking beacon frames before a complete power cycle synchronization is needed. The second control architecture continuously monitors beacon frames to detect when the camera is no longer associated with the base station, enabling early intervention and faster re-association without waiting for a full power cycle timeout to occur.
Solution Approach 2:
The system uses feedback from beacon frame reception to monitor and detect the association state. When the second control architecture stops receiving beacon frames or detects association loss, it triggers a feedback signal to wake the first control architecture, enabling responsive re-association based on real-time network status rather than fixed timing cycles.
2Reliability
If the camera performs power cycle synchronization to re-associate with the base station, then the out-of-sync state is corrected, but battery power is consumed
Solution Approach 1:
The system performs preliminary detection of association loss through beacon frame monitoring before initiating full re-association procedures. By detecting the out-of-sync state early through the second control architecture's beacon frame analysis, the system can trigger targeted re-association only when necessary, avoiding unnecessary power consumption from continuous or premature synchronization attempts.
Solution Approach 2:
The second control architecture independently monitors beacon frames and detects association state without requiring the first control architecture to be active. This self-service monitoring capability allows the low-power architecture to maintain network status awareness and trigger re-association only when needed, optimizing battery usage by keeping the high-power first control architecture in sleep mode during normal operation.
3Use of energy by moving object
If the camera remains in idle state to conserve power, then battery life is extended, but out-of-sync errors are not detected
Solution Approach 1:
The control architecture is segmented into two distinct components: the first control architecture that consumes more power and handles full re-association operations, and the second control architecture that consumes less power and performs beacon frame monitoring. This segmentation allows the system to maintain reliable association state detection through the second architecture while keeping overall power consumption low by keeping the first architecture in idle state during normal operation.
Solution Approach 2:
The second control architecture periodically wakes to check beacon frames from the base station, performing lightweight association state detection at intervals rather than continuously. This periodic action maintains reliable detection capability while extending battery life by keeping the first control architecture in idle state between periodic checks, balancing power consumption with detection reliability.
Data Source
AI summary
A method of conserving a battery-powered electronic device is disclosed. The electronic device is wirelessly communicable with an access point over a wireless local area network. Also disclosed are an electronic device and a system for performing the method. The method includes causing a first control architecture to be in an idle state; while the first control architecture is in an idle state and with a second control architecture, receiving a beacon frame from the access point, the beacon frame including electronic device association information, checking the beacon frame if the electronic device is associated with the access point, and providing a wakeup signal to the first control architecture when the electronic device is dissociated. The method further includes communicating from the second control architecture to the first control architecture that the electronic device was dissociated from the access point.