PoE Startup Sequencing for Multiple High-Powered Components
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Solution Overview
Problem
Existing Power over Ethernet (PoE) systems are limited in power capacity, preventing simultaneous operation of multiple devices that exceed the maximum wattage threshold, such as computers with multiple monitors, due to voltage and current limitations.
Innovation Solution
A power management protocol that staggers the startup of multiple components connected to a single PoE cable, adjusting power consumption by delaying the startup times of devices to maintain total power draw below the system's maximum wattage threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple high-powered components are connected to a single PoE cable, then device functionality and versatility are improved, but the system exceeds the maximum wattage threshold due to combined power requirements
Solution Approach 1:
The patent implements a startup sequencing mechanism that activates components in a predetermined order rather than simultaneously. The system identifies all connected components, determines their power requirements, and establishes a startup sequence that staggers power consumption peaks. This preliminary planning of the activation sequence allows the system to eventually run all high-powered components while preventing simultaneous power draws that would exceed PoE cable limits.
2Loss of time
If all components are activated simultaneously at startup, then system readiness time is reduced, but the power surge exceeds PoE system capacity
Solution Approach 1:
The patent employs periodic activation of components rather than simultaneous activation. The system implements a time-based sequencing mechanism where components are activated in successive time periods during startup. This periodic action spreads the power demand over time, preventing power surges that would exceed PoE system capacity while still achieving full system operation. The sequencing ensures that at any given moment, the active components remain within power limits.
3Reliability
If the PoE system limits power to stay within wattage thresholds, then cable safety and reliability are improved, but the system cannot support multiple high-powered devices simultaneously
Solution Approach 1:
The patent implements dynamic power management that adjusts power allocation based on the operational state of components. Rather than imposing static power limits that prevent multiple devices from connecting, the system dynamically sequences power delivery during startup and monitors power consumption during operation. This dynamic approach allows the system to support multiple high-powered devices while maintaining cable safety through controlled activation sequences and continuous power monitoring.
Data Source
AI summary
A system and method of powering up multiple electronic components that are connected to a single cable of a PoE system, wherein combined startup power requirements of the electronic components surpass available power. A threshold wattage is selected that is no greater than the maximum wattage of the PoE system. The controller is powered on at an initial time point. A first of a plurality of monitors is powered on at a delayed time point after the initial time point. Subsequent monitors are powered up at subsequent time periods that are staggered in time. The sum of the wattages at any given time is maintained below the threshold wattage of the PoE system. By having the ability to alter the delay periods between component startups, the power consumption for the overall system can be adjusted.