PoE Lighting Node Control During Controller Outages
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Solution Overview
Problem
Conventional Power over Ethernet (PoE) lighting systems face safety issues when controllers go offline, as lights may deactivate or fail to turn on, potentially leaving occupants without necessary illumination.
Innovation Solution
A node with a microprocessor is designed to control powered devices, such as lights or alarms, based on data received from a controller, and can operate independently if communication with the controller is interrupted, ensuring continued functionality even if the controller goes offline by setting a predetermined dim level or executing a script.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses centralized controller management for PoE devices, then control precision and energy management are improved, but system reliability deteriorates when the controller goes offline
Solution Approach 1:
The patent divides the centralized control system into distributed intelligent nodes. Each PoE device or group of devices is assigned a local microprocessor that can independently make control decisions, segmenting the monolithic controller into multiple autonomous units that maintain operation even when others fail.
Solution Approach 2:
The microprocessors are pre-programmed with control algorithms and decision-making logic before deployment. When communication with the central controller is lost, these pre-loaded instructions enable immediate autonomous operation without requiring real-time commands, ensuring continuous reliability.
2Reliability
If the system implements autonomous operation capability in nodes, then system reliability is improved during controller failures, but device complexity increases
Solution Approach 1:
The patent implements universal microprocessors in each node that can perform multiple functions: normal controlled operation when the central controller is active, and autonomous decision-making when communication is lost. This multi-functionality adds reliability without requiring separate dedicated hardware for each mode.
Solution Approach 2:
Each node is equipped with self-service capabilities through embedded microprocessors that can independently monitor device status, manage power distribution, and execute control decisions without external intervention. This self-sufficiency enhances reliability while keeping individual node complexity manageable through integration.
Data Source
AI summary
Example embodiments relate to a node and a method of controlling devices connected to the node. In example embodiments the devices may be, but are not required to be, lights.