PSE-PD Combination Unit for Multi-Device Inline Power Management
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Solution Overview
Problem
Existing wired data telecommunications networks face challenges in providing redundant power and data delivery, especially when equipment failures occur, as they are typically designed to power a single device and lack efficient mechanisms for managing power resources across multiple devices.
Innovation Solution
A PSE-PD combination unit that adapts its electrical characteristics to request and manage inline power, allowing power to be allocated and shared among multiple devices in a daisy chain configuration, ensuring efficient power utilization and availability by tracking consumed power and granting requests based on available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PSE is designed to power a single device, then power delivery reliability to that device is ensured, but the system cannot provide power to multiple devices or offer redundancy when equipment failures occur
Solution Approach 1:
The patent implements a daisy-chain architecture where each PSE-PD combination unit serves dual functions: it acts as a powered device (PD) receiving power from upstream and as a power sourcing equipment (PSE) providing power to downstream devices. This multi-functionality enables a single PSE to power multiple devices through the chain while maintaining reliability through redundant power paths.
Solution Approach 2:
The system segments the power delivery function across multiple identical units, where each unit in the daisy chain can independently function as both PSE and PD. This segmentation allows power to be distributed to multiple devices while any single unit failure does not compromise the entire system, as other units can continue operating.
2Use of energy by moving object
If power is allocated to multiple devices in a daisy chain, then power resource utilization efficiency improves, but the complexity of managing power allocation and tracking consumed power increases
Solution Approach 1:
The patent incorporates feedback mechanisms where each PSE-PD combination unit monitors and reports its power consumption status to upstream units. The PSE tracks the cumulative power consumed by each device in the chain and dynamically adjusts power allocation based on available resources, preventing overallocation and ensuring efficient utilization.
Solution Approach 2:
Each unit in the daisy chain autonomously manages its own power consumption and participates in power allocation decisions for downstream devices. The system distributes the power management burden across all units rather than centralizing it, reducing the complexity burden on any single component while maintaining efficient resource utilization.
Data Source
AI summary
A power sourcing equipment-powered device (PSE-PD) combination unit requests inline power from a connected PSE or other PSE-PD combination unit by having the PD portion of the PD-PSE combination unit adapt its electrical characteristics, if necessary, to obtain the maximum power available. The PD-PSE combination device keeps track of available power less power consumed locally with a summation unit. A PSE manager unit grants PD power requests from downstream devices based upon the available power left (e.g., original PSE power less losses less local consumption).