Ethernet Power Sourcing Equipment With Dynamic PoE Voltage Selection
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Solution Overview
Problem
Existing Ethernet-based power sourcing equipment struggles to simultaneously supply power to both standard and non-standard powered devices due to lack of adaptability and compatibility, leading to inefficiencies in power distribution.
Innovation Solution
The Ethernet-based power sourcing equipment includes a control module to determine device type and power mode, a management module to manage power provisioning, and a power selection module to output appropriate voltages, enabling simultaneous power supply to standard and non-standard devices through MOS transistors and diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the power sourcing equipment supports only standard PoE, then it can reliably supply power to standard powered devices, but it cannot supply power to non-standard powered devices
Solution Approach 1:
The power sourcing equipment is designed to support multiple power supply modes including standard PoE (802.3af/at/bt) and non-standard PoE (PASSIVE PoE) simultaneously. The system includes multiple power conversion modules that can convert input voltage to different output voltages (e.g., 48V for standard PoE and 24V for non-standard PoE), enabling a single device to serve both standard and non-standard powered devices reliably
Solution Approach 2:
The power sourcing equipment dynamically adjusts its power supply parameters based on detection of the connected powered device type. The control module detects whether the connected device is standard or non-standard PoE and automatically switches between appropriate power conversion modes, ensuring reliable power delivery while maintaining versatility
2Adaptability or versatility
If the power sourcing equipment supports only non-standard PoE, then it can supply power to non-standard powered devices, but it cannot supply power to standard powered devices
Solution Approach 1:
The power sourcing equipment incorporates multiple power conversion modules capable of operating in both standard PoE and non-standard PoE modes. The system can convert input voltage to 48V for standard PoE devices and to 24V for non-standard PoE devices, ensuring that a single piece of equipment can reliably support both device types without requiring separate power sourcing equipment for each standard
Solution Approach 2:
The control module dynamically detects the type of powered device connected and automatically switches between standard PoE and non-standard PoE power supply modes. This dynamic adaptation ensures reliable power delivery to whichever device type is connected while maintaining the ability to support both standard and non-standard devices
3Adaptability or versatility
If the power sourcing equipment uses a single power conversion module, then the device structure is simple, but it cannot supply power to both standard and non-standard powered devices simultaneously
Solution Approach 1:
The power conversion function is divided into multiple independent power conversion modules, each specialized for a specific power supply mode (standard PoE or non-standard PoE). This segmentation allows each module to handle specific voltage conversion tasks efficiently while the control module coordinates their operation, achieving multi-mode support without creating a single overly complex conversion circuit
Solution Approach 2:
Multiple power conversion modules are integrated into a single power sourcing equipment unit, each capable of operating independently or in coordination with others. This modular approach enables the system to provide both standard PoE (48V) and non-standard PoE (24V) power supply capabilities while maintaining relatively simple individual module designs that can be manufactured and maintained separately
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 the same power sourcing equipment to supply power to both standard and non-standard devices, enhancing compatibility and efficiency in power distribution.
Implementation Method 1
a first power conversion module, being configured to convert the first voltage into a second voltage
Implementation Method 2
enabling simultaneous power supply to standard and non-standard devices through MOS transistors and diodes
Data Source
AI summary
The present application relates to Ethernet-based power sourcing equipment capable of supporting both standard and non-standard powered devices It includes: a control module for, determining the device specifications (I.e., device type, operating power and target power supply mode of a powered device) and outputting corresponding control signal a management module for managing a power provisioning status and a power output of respective ports, according to instructions of the control module; a first power module for providing a first voltage; a first power conversion module for converting the first voltage into a second voltage; a power selection module for controlling the first voltage or the second voltage to be output through the voltage output terminal, according to the output control signal of the control module.