POE Diagnostic Powering Device for Automated Ethernet Testing
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Solution Overview
Problem
Conventional testing methods for Ethernet powered devices are costly, complex, and invasive, often relying on interoperability testing which does not assure proper device performance under all network interface conditions, making it challenging to precisely stimulate and measure detection and classification parameters, especially for data-link classifications with higher resolution settings.
Innovation Solution
A POE test solution that establishes a connection between the Ethernet powered device and a diagnostic powering device, applies power, and supervises power negotiation, measuring electrical parameters while configuring operational states, allowing for automated testing and eliminating the need for invasive connections or specialized test modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional interoperability testing is used to assess Ethernet powered devices, then testing can be performed with existing equipment, but the testing is costly, complex, and invasive, and does not assure proper device performance under all network interface conditions
Solution Approach 1:
The patent introduces a diagnostic powering device as an intermediary tool between the power-sourcing equipment and the Ethernet powered device under test. This diagnostic device simplifies the testing process by providing a user-friendly interface and automated control, reducing the complexity and cost of conventional testing while ensuring reliable performance assessment through comprehensive parameter measurement and control.
2Measurement precision
If traditional physical layer testing methods are used, then device performance can be assessed, but the testing requires expensive and complex support equipment and is laborious
Solution Approach 1:
The diagnostic powering device is designed as a multi-functional instrument that can perform various testing operations including power delivery, detection, classification, and parameter measurement. By consolidating these functions into a single device with a user-friendly interface, the patent reduces the need for multiple expensive support equipment while maintaining high measurement precision for detection and classification parameters.
3Adaptability or versatility
If data-link classification protocols are used with higher resolution settings, then power allocation adjustment capability is improved, but the testing becomes more challenging due to higher resolution requirements
Solution Approach 1:
The diagnostic powering device incorporates feedback mechanisms that continuously monitor power consumption and delivery parameters during data-link classification negotiations. The device automatically adjusts test parameters based on real-time feedback from the Ethernet powered device, making it easier to detect and measure power consumption at high resolution settings while maintaining the adaptability needed for power allocation adjustment.
4Productivity
If automated testing is implemented, then testing efficiency is improved, but the testing equipment must precisely stimulate and measure detection and classification parameters
Solution Approach 1:
The diagnostic powering device performs preliminary configuration and setup of test parameters before automated testing begins. It pre-establishes the necessary control settings for power delivery and measurement, ensuring that when automated testing starts, the equipment is already configured to precisely stimulate and measure detection and classification parameters without requiring complex real-time adjustments.
Data Source
AI summary
An apparatus to test an Ethernet powered device includes a processor including a power negotiation supervisor, a DC power source, a first interface having an Ethernet medium dependent interface and a coupling circuit that inserts DC power onto one or more wire pairs of the first interface. The apparatus further includes a first bridging circuit, a measuring circuit to measure characteristics of DC power delivered to Ethernet powered device. The DC power source is configurable over a range of voltage levels including a plurality of operating voltages which are applied to the Ethernet powered device and the power negotiation supervisor processes power negotiation protocol messages.