PoE Power Management via Shared Bus Prioritization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Power over Ethernet (PoE) systems face inefficiencies in power allocation, as they often supply the maximum power to all ports equally, leading to insufficient power for devices requiring maximum power and lack dynamic adjustment based on factors like temperature or system changes, and require complex software for management.
Innovation Solution
A power management system using a shared power-in-use bus and power allocation bus to prioritize power distribution across multiple ports, dynamically adjusting power supply based on actual usage and allocation thresholds, with no software required, ensuring higher priority devices maintain power while lower priority devices are disconnected or denied power when thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maximum power is supplied to all ports equally, then all devices receive sufficient power, but devices requiring maximum power may not receive enough and power allocation is inefficient
Solution Approach 1:
The patent implements local quality by assigning different power allocation characteristics to different ports based on their priority levels. High-priority ports receive power first and have higher allocation thresholds, while low-priority ports receive power later and have lower thresholds. This differential treatment ensures that devices requiring maximum power (typically high-priority devices like video conferencing systems) receive sufficient power, while overall power allocation efficiency is improved through prioritization.
2Ease of operation
If power allocation is managed with complex software, then precise control is achieved, but system complexity increases
Solution Approach 1:
The patent implements self-service by enabling the power supply system to automatically manage power allocation based on priority levels and thresholds without requiring complex software control. The system autonomously determines which ports receive power first and which receive power later based on their assigned priorities, and automatically adjusts power distribution when thresholds are exceeded. This eliminates the need for complex software while maintaining precise control over power allocation.
3Stability of the object's composition
If power is not dynamically adjusted, then system stability is maintained, but adaptability to system changes and environmental factors is reduced
Solution Approach 1:
The patent implements dynamics by enabling the power supply system to dynamically adjust power allocation based on real-time conditions while maintaining stable operation. The system dynamically responds to changes in power demand, temperature, and other environmental factors by adjusting which ports receive power and at what rates. The dynamic nature of the system allows it to adapt to changing conditions without compromising stability, as adjustments are made based on predefined priorities and thresholds that ensure orderly power distribution.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
System and methodology for managing power supplied to powered devices over communication links, such as Ethernet links. A power supply system (100) has multiple power supply ports for providing power (122) to respective powered devices via multiple communication links. A power-in-use bus (104) shared by the multiple power supply ports is configured for receiving a power-in-use signal representing total amount of power being used by the powered devices. Multiple port control circuits (110) associated with the power supply ports are responsive to the power-in-use signal for controlling supply of power to the respective powered devices.