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Systems and Methods for Detecting Powered or Powering Device Configuration Via Ethernet Connection
Systems and Methods for Detecting Powered or Powering Device Configuration Via Ethernet Connection
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机译:通过以太网连接检测受电或受电设备配置的系统和方法
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摘要
Provided is a method for detecting a PoE (power over Ethernet) device comprising applying a positive polarity of a first current source to one of a first and second data pairs of an Ethernet connection to a powered device (PD) and a negative polarity of the first current source to the other of the first and second data pairs, applying a positive polarity of a second current source to a first spare pair of the Ethernet connection and a negative polarity of the first current source to a second spare pair of the Ethernet connection, simultaneously measuring a first voltage across the first current source and a second voltage across the second current source, discontinuing application of the first current source and measuring a third voltage across the second current source, and determining a configuration of the PD using the measured first, second and third voltages.
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