Low-Power Wireless Camera Failover for Reliable Video Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless cameras in security systems face challenges in maintaining reliable video data transmission due to network disruptions, particularly when the primary communication link fails, leading to potential gaps in monitoring and increased power consumption.
Innovation Solution
The camera system employs dual communication modules, including a high-bandwidth wifi module and a low-power sub-GHz module, allowing it to switch to a backup cellular network via a base station when the primary wifi connection fails, and selectively sends image frames based on analysis to conserve power and ensure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera uses a high-bandwidth wifi module for video data transmission, then the data transmission quality is improved, but the power consumption increases
Solution Approach 1:
The camera dynamically switches between wifi and cellular communication modules based on network availability and operational needs. The system activates the high-bandwidth wifi module when available for quality video transmission, and transitions to the low-power cellular module when wifi is unavailable or to conserve battery power, making the communication system adaptable rather than static
Solution Approach 2:
The system changes the operational parameters of communication by switching between different communication protocols and modules (wifi vs. cellular). This parameter change allows the camera to optimize the balance between transmission quality and power consumption based on environmental conditions and battery status
2Reliability
If the camera switches to a backup cellular network when the primary wifi connection fails, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The cellular communication module serves as an intermediary backup system that activates when the primary wifi communication path fails. This intermediary component ensures continuous communication capability without requiring complete system redesign, as it integrates with the existing camera architecture through shared processing and power management
3Productivity
If the camera continuously monitors and analyzes image frames to select which to send, then the data transmission efficiency is improved, but the processing time and energy consumption increase
Solution Approach 1:
Instead of processing and transmitting all captured image frames, the system selectively transmits only certain frames that meet specific criteria (such as containing motion or significant changes). This partial action approach reduces the total number of transmissions, optimizing the balance between monitoring effectiveness and power consumption
Solution Approach 2:
The camera performs self-service by autonomously analyzing its own captured frames and making intelligent decisions about which frames warrant transmission. The system uses onboard processing to identify significant events and selectively upload only those frames, reducing reliance on continuous cloud-based analysis and minimizing unnecessary data transmission
Data Source
AI summary
A location monitoring system, such as an alarm system employed at a house or other location, can include a wireless, battery-operated camera. The camera can have a low power mode in which all components other than a low power communications module are deactivated. The camera can be activated by a signal received by the low power communications module, and the camera can establish a direct communications link with, and send video image data to, a remote server. Where the camera/server direct communications link is inoperable, a link to a local controller is established, and at least a portion of the video image data sent to the controller, which can send a portion of the video image data via an alternate network.