PoE Switch Power Management via Data-Triggered Activation
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Solution Overview
Problem
Power-over-Ethernet (PoE) systems consume high power even when devices are in a standby state, as they need to remain alert for Ethernet activity, leading to increased energy consumption.
Innovation Solution
An apparatus that powers electrical consumers via a data connection, using a controller to activate power only when data is received, allowing devices to deactivate and reduce power consumption, with features like state storage for power status and adaptive power management based on data commands and consumption thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the electrical consumer remains powered on to stay alert for Ethernet activity, then the device can react quickly to data transmission, but power consumption increases
Solution Approach 1:
The system performs preliminary actions by buffering incoming data packets at the PoE switch before the electrical consumer is powered on. When data arrives at a powered-off device, the switch stores the data temporarily and activates power only when needed for transmission, eliminating the need for continuous alert state while maintaining response capability.
Solution Approach 2:
The PoE switch acts as an intermediary between the network and the electrical consumer. It monitors data traffic, buffers packets destined for powered-off devices, and coordinates power activation with data transmission timing, allowing the consumer to remain off while ensuring no data is lost.
2Use of energy by moving object
If the electrical consumer is deactivated to reduce power consumption, then energy efficiency improves, but the device cannot receive or respond to data transmissions
Solution Approach 1:
The system performs preliminary actions by buffering incoming data packets at the PoE switch before the electrical consumer is powered on. When data arrives at a powered-off device, the switch stores the data temporarily and activates power only when needed for transmission, eliminating the need for continuous alert state while maintaining response capability.
Solution Approach 2:
The system uses feedback mechanisms where the electrical consumer can signal its power state and data readiness to the PoE switch. The switch monitors this feedback and dynamically adjusts power supply timing, ensuring power is provided only when data transmission is required, thus maintaining reliability while reducing power consumption.
3Use of energy by moving object
If the PoE switch continuously monitors and manages power states of multiple devices, then power optimization is achieved, but system complexity increases
Solution Approach 1:
The PoE switch integrates multiple functions into a single device: data switching, power management, data buffering, and device state monitoring. This multi-functionality allows the switch to optimize power consumption across multiple electrical consumers without requiring separate control systems for each device, managing complexity through consolidation rather than proliferation.
Data Source
AI summary
The invention relates to an apparatus (1) for powering an electrical consumer (3, 4, 5) via a data connection (6, 7, 8). The apparatus comprises a power supply (2) for supplying power to the electrical consumer via the data connection, a data receiving unit (9) for receiving data to be sent to the electrical consumer, and a controller (10) for activating the supply of power to the electrical consumer via the data connection, if data to be sent to the electrical consumer have been received and the supply of power to the electrical consumer is deactivated. The electrical consumer itself does therefore not need to receive power from the apparatus, in order to stay alert to be able to react on data connection activity, thereby reducing the power consumption.