Abstract: A method and a device used for remote control by optical fiber signals and power over Ethernet includes a power sourcing equipment (PSE) outputting a direct current (DC) via at least one network cable to at least one powered device (PD). When the PSE receives a second restarting signal from a signal controller, the PSE stops supplying power to the at least one PD. An optoelectric signal converter converts an optical signal from an Ethernet Switch to a digital signal for the signal controller. When the optical signal is determined by the signal controller to be interrupted after a first time duration passes, the signal controller outputs the second restarting signal to the PSE for restarting. After restarting, the PSE re-powers the at least one PD. The at least one PD is restarted remotely without requiring working personnel at the location of the at least one PD, improving restarting efficiency.

Abstract: A hot swapping protection device for Power over Ethernet which has a state setting switch group, an interface circuit, a power supply device, a packet switching controller, multiple isolation coil sets, and multiple connectors. The packet switching controller receives a digital state value P2 of the interface circuit and a digital signal P1 of the state setting switch group and bitwise compares P1 and P2 so as to output a command to control the DC voltage outputs of the power supply device. The power supply device has a digital power controller and an analog power controller having multiple voltage output terminals for providing DC voltages to the multiple connectors. Before removing a cable connected to a connector, all voltage output states of the voltage output terminals corresponding to the connector are set to a cutoff state, so that sparks generation can be avoided during subsequent cable plug-in and unplugging.

Abstract: A hot swapping protection device for Power over Ethernet which has a state setting switch group, an interface circuit, a power supply device, a packet switching controller, multiple isolation coil sets, and multiple connectors. The packet switching controller receives a digital state value P2 of the interface circuit and a digital signal P1 of the state setting switch group and bitwise compares P1 and P2 so as to output a command to control the DC voltage outputs of the power supply device. The power supply device has a digital power controller and an analog power controller having multiple voltage output terminals for providing DC voltages to the multiple connectors. Before removing a cable connected to a connector, all voltage output states of the voltage output terminals corresponding to the connector are set to a cutoff state, so that sparks generation can be avoided during subsequent cable plug-in and unplugging.