Hybrid Data/Power Link Routing for Multi-Node PoE Distribution
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Solution Overview
Problem
The inefficiency of using dedicated cables for Power-over-Ethernet (PoE) loads becomes unwieldy as power requirements increase, particularly in arbitrarily configured networks where multiple devices with varying power demands and data communication needs are connected.
Innovation Solution
A method for distributing DC power and routing data through hybrid data/power links, utilizing a controller device to create a power distribution map and data routing map, allowing multiple PoE loads to be powered and connected efficiently within a network, with nodes capable of receiving or transmitting power and data independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated cables are used for each PoE load, then power delivery reliability is improved, but device complexity and cable management become unwieldy
Solution Approach 1:
The patent merges power delivery and data communication functions into a single hybrid cable system. Multiple PoE loads are connected to a single PoE source through shared hybrid cables that carry both power and data signals, eliminating the need for separate dedicated power cables for each device.
Solution Approach 2:
The hybrid cable serves multiple functions simultaneously: it provides power delivery, data communication, and device discovery capabilities. The cable infrastructure is designed to handle both PoE power signals and Ethernet data signals through the same physical medium, reducing overall system complexity.
2Productivity
If multiple PoE loads are connected through a single hybrid cable, then cable efficiency is improved, but power distribution control becomes more difficult
Solution Approach 1:
The system implements feedback mechanisms where PoE loads communicate their power requirements and status back to the PoE source through the data communication channel. The source uses this feedback information to dynamically adjust power allocation and distribution across multiple devices sharing the same cable infrastructure.
Solution Approach 2:
The power distribution system is designed to be dynamic rather than static. The PoE source can reallocate power capacity among multiple loads based on real-time demands, device priorities, and available power budget, allowing flexible adaptation to changing network conditions without requiring dedicated fixed connections.
3Adaptability or versatility
If hybrid data/power links are used for multiple devices, then installation flexibility is improved, but signal interference risk increases
Solution Approach 1:
The hybrid cable's signal transmission is segmented into separate channels: power signals use specific wire pairs while data signals use other wire pairs. This segmentation isolates power and data pathways, preventing mutual interference while allowing both functions to operate simultaneously through the same physical cable.
Solution Approach 2:
The system uses communication protocols and control mechanisms as intermediaries to coordinate power and data transmissions. These intermediary layers manage the interaction between power delivery and data communication, ensuring that both functions operate harmoniously without causing harmful interference to each other.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient power distribution and data routing in complex networks, reducing cable requirements and enhancing flexibility by using existing hybrid data/power links for both power and data transmission, optimizing network performance and scalability.
Implementation Method 1
Different frequencies are used for the power and the data signals
Data Source
AI summary
A method for execution in a central controller comprises obtaining an interconnection topology for a plurality of nodes interconnected via hybrid data/power links; obtaining a power distribution map associated with the topology; and causing DC power to be distributed to the nodes via the links according to the power distribution map. Also, such a node in which there is at least one power-receiving port and at least one power-transmitting port, a controller and power switching circuitry. The controller operates based on power drawn from a portion of the DC power received via the power-receiving port. The controller determines a destination of data packets received via any of the ports and outputting those of the received data packets that are not destined for the network device via another one of the ports. The controller also causes the power switching circuitry to output via plural power-transmitting ports respective portions of the received DC power received at the power-receiving port.