Autonomous PoE Node Maintains Lighting During Controller Outage
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Solution Overview
Problem
Conventional Power over Ethernet (PoE) lighting systems can deactivate or fail to turn on if the controller, such as a switch, goes offline, posing a safety risk for building occupants who need light to exit.
Innovation Solution
A node with a microprocessor that controls powered devices, such as lights or alarms, based on data received from a controller, and independently manages the devices if communication with the controller is interrupted, ensuring continuous functionality even when the controller is offline.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the system uses a centralized controller to manage powered devices, then the control functionality is improved, but the reliability deteriorates when the controller goes offline
Solution Approach 1:
The patent divides the centralized control system into distributed autonomous nodes. Each powered device is equipped with its own microprocessor that can independently make control decisions, segmenting the control authority from the centralized controller. This allows the system to maintain functionality even when the central controller is unavailable, as each node operates independently based on local conditions.
Solution Approach 2:
The microprocessor in each powered device is pre-programmed with control logic and algorithms before deployment. This preliminary action enables the device to autonomously execute control functions without real-time intervention from the central controller, ensuring continuous operation during controller outages. The device can independently monitor its state and make appropriate control decisions based on pre-established criteria.
2Measurement precision
If the system maintains constant communication with the controller, then the control precision is improved, but the complexity of the system increases
Solution Approach 1:
Each powered device performs self-monitoring and self-control through its integrated microprocessor. The device autonomously tracks its operational state, evaluates local conditions, and executes control actions without requiring continuous external commands. This self-service capability maintains precise control while eliminating the need for complex communication infrastructure and reducing system overall complexity.
Solution Approach 2:
The control system implements local decision-making at each powered device rather than centralized control. Each microprocessor is equipped with locally-stored control algorithms and parameters tailored to its specific device characteristics and operating conditions. This local quality approach enables precise control adapted to each device's specific needs while avoiding the complexity of centralized management.
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.