Network Switch Power Management Circuit for Backup Operation
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Solution Overview
Problem
Network switches face reliability issues during power outages as they rely heavily on secondary power sources, which can fail, disrupting communication between connected computing devices.
Innovation Solution
A network switch and computing device system where the network switch receives power from a primary source and includes a power management circuit that draws power from network cables connected to computing devices, allowing it to continue operating during primary power source failures by utilizing surplus power from these devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a network switch uses a primary power source only, then the device complexity is reduced, but the reliability deteriorates during power outages
Solution Approach 1:
The patent combines multiple power sources (primary power source and secondary power sources from connected computing devices) into a unified power supply system for the network switch. The power management circuit integrates these diverse power sources and automatically selects or combines them to maintain switch operation during power outages, thereby improving reliability while managing complexity through intelligent integration.
Solution Approach 2:
The network cables that originally served only for data transmission are made multi-functional by enabling them to carry both data and power (Power over Ethernet capability). This allows connected computing devices to serve as secondary power sources for the network switch, eliminating the need for dedicated backup power infrastructure and improving reliability without proportionally increasing device complexity.
2Reliability
If a dedicated secondary power source is used for the network switch, then the reliability during power outages is improved, but the device complexity and cost increase
Solution Approach 1:
The network switch system provides its own backup power capability by utilizing power from the connected computing devices themselves. Instead of requiring an external dedicated backup power source, the system serves its own power needs through the existing infrastructure, with the power management circuit automatically drawing power from connected devices when the primary power source fails.
Solution Approach 2:
The existing network cables and connected computing devices are made multi-functional to serve both data transmission and power supply purposes. This eliminates the need for separate dedicated backup power infrastructure, reducing complexity while maintaining reliability during power outages.
3Adaptability or versatility
If power is drawn from network cables connected to computing devices, then the dependence on dedicated secondary power sources is reduced, but the power management complexity increases
Solution Approach 1:
The power management circuit implements feedback mechanisms to monitor the status of the primary power source and the power availability from connected computing devices. Based on this feedback, the circuit automatically adjusts its power drawing strategy, selecting the appropriate power source or combination of sources to maintain switch operation while managing the complexity through intelligent control.
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
This solution ensures the network switch operates reliably during power outages, matching the reliability of connected computing devices, by reducing dependence on dedicated secondary power sources and utilizing unused power from multiple devices for backup power.
Implementation Method 1
a communication medium configured to conduct operating power for the network switch
Data Source
AI summary
A network switch includes a power connection configured to receive power from a primary power source and at least two ports. At least a first one of the ports is configured to connect to a first network interface of a first computing device through a communication medium configured to conduct operating power for the network switch. The first network interface is configured to draw electrical power from a power supply of the first computing device and provide, through the network cable, at least a portion of the drawn electrical power as the operating power. A switching circuit is configured to route network data between the ports and a power management circuit coupled at least to the first port. The power management circuit is configured to draw at least a portion of the operating power from the first port, and power the switching circuit using the drawn power responsive to a detected failure of the primary power source.