Battery-Powered Camera Node Sleep Mode Protocol
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Solution Overview
Problem
Existing network cameras require continuous power sources and wired connections, limiting their discreet installation and long-term monitoring capabilities due to high power consumption and the need for frequent battery replacement or data transmission, which is costly and disruptive.
Innovation Solution
A network sensor system with self-contained, battery-operated camera nodes that use power-saving protocols and wireless communication to transmit high-resolution data to a central hub, operating in sleep mode to minimize power usage and extend battery life, allowing for undisturbed operation for up to three years without maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Internet cameras use wireless communication and battery power, then installation flexibility and discreet placement are improved, but power consumption increases and battery life is limited
Solution Approach 1:
The camera alternates between active imaging periods and sleep modes, periodically activating only when motion is detected or scheduled, thereby reducing overall power consumption while maintaining monitoring capability
Solution Approach 2:
The camera autonomously manages its power consumption by automatically transitioning between active and sleep states based on motion detection, eliminating the need for manual intervention and extending battery life
2Measurement precision
If Internet cameras transmit high-resolution image data, then data quality is improved, but power consumption and transmission time increase
Solution Approach 1:
The camera transmits high-resolution images only periodically when motion is detected or at scheduled intervals, rather than continuously, reducing total transmission power consumption while maintaining image quality when needed
Solution Approach 2:
The camera transmits partial data (motion-detected frames or scheduled images) rather than all captured images, reducing transmission volume and power consumption while maintaining sufficient monitoring effectiveness
3Ease of manufacture
If Internet cameras are placed in discreet locations without power sources, then installation simplicity is improved, but access for battery replacement becomes difficult
Solution Approach 1:
The camera autonomously manages its operation by automatically transitioning between active and sleep states based on motion detection, eliminating the need for manual battery replacement and maintenance intervention
Solution Approach 2:
The camera is designed with long-duration batteries and low-power operation from the outset, preemptively addressing the battery replacement issue by extending battery life to multi-year periods without requiring access to the device
4Use of energy by moving object
If motion detection is used to activate the camera, then power consumption is reduced, but detection accuracy and false positive rates become critical
Solution Approach 1:
A separate motion detection sensor acts as an intermediary that triggers camera activation, allowing the main camera sensor to remain in low-power mode while still enabling selective high-resolution capture when motion is detected
Solution Approach 2:
Motion detection occurs preliminarily before full camera activation, allowing the system to prepare for potential high-resolution imaging while maintaining low power consumption during periods of no activity
Data Source
AI summary
A network sensor system and protocol is provided. The network sensor system includes a sensor node that has a sensor for collecting high-resolution data, and a radio for transmitting that data to a central hub. The sensor node communicates to the hub with a wireless data link, and operators solely from a battery. Accordingly, the sensor node is autonomous, and has no wire connections, so may be discreetly and simply installed. The sensor node is normally operated in a power-saving sleep mode, and is minimally activated only for required periods of time. The sensor node may be activated responsive to a low power timer, or from another locally generated interrupt. The sensor node also implements power-saving transfer protocols to further reduce power needs. Many sensor nodes may be associated with a single central hub, and larger networked sensor systems may be arranged.