Emergency Beacon Mesh Control for Networked Lighting Outages
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Solution Overview
Problem
Recent updates to regulations such as UL924 have changed how emergency lighting is managed in networked devices, requiring active detection of power loss and continuous operation, posing challenges in ensuring all fixtures receive the emergency beacon message and form a complete mesh network during power outages.
Innovation Solution
The implementation of an emergency beacon device that actively detects power loss and broadcasts emergency signals to specific network components, enabling them to operate in an emergency mode while disabling mesh forwarding in non-emergency devices, allowing for real-time testing of emergency setups without full power disruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If emergency beacon devices broadcast emergency signals to all network components, then all emergency fixtures can receive signals, but normal power devices may interfere with mesh network communication during emergency mode
Solution Approach 1:
The patent applies local quality by differentiating the behavior of network components based on their power source status. Normal power devices disable mesh forwarding functionality when receiving emergency beacon signals, while emergency power devices continue to forward messages. This selective differentiation ensures that emergency signals reach all emergency fixtures without interference from normal power devices, resolving the contradiction between reliable signal delivery and network interference.
2Productivity
If mesh network components continue forwarding messages during emergency mode, then network communication is maintained, but emergency signal priority and reliability are compromised
Solution Approach 1:
The patent implements dynamics by enabling normal power devices to dynamically change their mesh forwarding state based on emergency beacon signals. When an emergency beacon is detected, normal power devices transition from active message forwarding to disabled forwarding, while emergency power devices maintain their forwarding capability. This dynamic state change ensures emergency signal priority and reliability during emergency mode while maintaining network communication productivity during normal operation.
3Reliability
If emergency mode is activated building-wide, then all emergency fixtures respond, but selective area control and testing capability are reduced
Solution Approach 1:
The patent applies segmentation by dividing the building into multiple controllable zones, each with its own emergency beacon device and network component group. Each segment can independently detect emergency conditions and activate emergency mode locally, allowing selective area control. This segmentation enables reliable emergency fixture response within each zone while maintaining the versatility to control different areas independently based on specific emergency conditions.
Data Source
AI summary
Systems and methods for managing an emergency mode of operation in a network system having network components in a many-to-many, peer-to-peer network. The network components include emergency beacons, emergency-enabled controlled devices, and normal power devices. In an emergency test mode of operation, the normal power devices disable their peer-to-peer forwarding functionality, such that these devices do not forward messages during a subsequent trigger of emergency state. Subsequently, the emergency beacons trigger an emergency mode of operation in the emergency-enabled controlled devices.