Adaptive Power Sourcing Equipment for Mixed Ethernet Device Compatibility
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Solution Overview
Problem
Existing Ethernet power sourcing equipment (PSE) systems are incompatible with both one-pair and two-pair Ethernet-powered devices, leading to communication failures when devices of different types are connected, as they require matching types of PSE and powered devices (PD) for proper power and data delivery.
Innovation Solution
The introduction of adaptive PSE and PD systems that can detect the type of connected device and adjust power delivery accordingly, allowing either type-1 or type-2 configurations, ensuring compatible power and data transmission by activating the appropriate power switches and circuits based on detected device types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a PSE is designed for power and data delivery to a type-1 device, then type-1 devices can be properly powered and communicate, but type-2 devices cannot be supported
Solution Approach 1:
The PSE is designed to support multiple device types (type-1 and type-2) through a single unified interface. The system can detect the connected device type and automatically configure the appropriate power delivery mode, eliminating the need for separate PSE configurations for different device types and enabling universal compatibility.
Solution Approach 2:
The PSE incorporates dynamic detection and switching capabilities that allow it to adapt its power delivery configuration in real-time based on the connected device type. The system can switch between type-1 and type-2 power delivery modes dynamically, providing flexibility and adaptability without requiring manual reconfiguration.
2Adaptability or versatility
If a PSE within the switch is designed for power and data delivery to a type-2 device, then type-2 devices can be properly powered and communicate, but type-1 devices cannot be supported
Solution Approach 1:
The PSE automatically detects the type of connected device and configures the appropriate power delivery mode without requiring user intervention. The system performs self-diagnosis and self-configuration, eliminating the need for users to manually set or configure the PSE for different device types, thereby simplifying operation.
Solution Approach 2:
The system incorporates detection mechanisms that provide feedback about the connected device type to the PSE controller. Based on this feedback, the PSE automatically adjusts its power delivery configuration to match the requirements of the connected device, ensuring proper operation without manual setup.
3Reliability
If users must know a priori which jacks work with type-1 and which jacks work with type-2 to make correct connections, then proper power and data delivery can be ensured, but system usability and ease of deployment are reduced
Solution Approach 1:
The PSE performs preliminary detection of the connected device type before initiating power delivery. By detecting and configuring the appropriate power mode in advance, the system ensures reliable power delivery without requiring users to have prior knowledge of device type requirements or to manually configure connections.
Data Source
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AI summary
A power sourcing equipment is connected to a powered device via a cable. The power sourcing equipment is configured to provide power to different types of devices. The power sourcing equipment has a control system for determining the type of powered device that is connected to the cable and furnishes power in response to the determination. Also described is a powered device capable of establishing communication with PSEs of multiple types.