Auto power controller of external equipment on valid check

A power controller for at least one piece of external equipment, the power controller being connected to the external equipment and to a serial console or a terminal through a network, comprising:

• a main unit for determining if an abnormality has occurred in the external equipment and for controlling supply of power to the external equipment;
• an expansion unit for resetting power of the external equipment determined by the main unit as being in an abnormal status;
• wherein the main unit comprises:
• a console port unit providing an interface for connection with the serial console, linking the serial console with the external equipment and providing connection to the external equipment through a serial port;
• a network adaptor unit providing an interface for connection with the terminal through a network and providing connection to the external, equipment through a Local Area Network (LAN);
• an expansion unit interface providing an interface for transmitting signals to and receiving signals from the expansion unit;
• and
• a control unit for controlling operation of the console port unit, the network adaptor unit, and the expansion unit interface, and for controlling supply of power to the external equipment;
• wherein the expansion unit comprises:
• at least one power connection unit for supplying power to the external equipment;
• a switch driving unit for switching supply of power from the power connection unit to the external equipment under control of the control unit of the main unit;
• and
• a power connection determination unit for determining whether the power connection unit supplies power to the external equipment, and consequently for transmitting a power connection determination signal to the main unit;
• and
• wherein the control unit of the main unit
• transmits an external equipment status checking request signal received from the serial console or the terminal to the external equipment;
• transmits the external equipment status checking signal received from the external equipment in response to the external equipment status checking request signal to the serial console or the terminal;
• and
• transmits a power reset request signal to the expansion unit through the expansion unit interface when a reset command is received from the serial console or the terminal, and the switch driving unit of the expansion unit resets power of the external equipment in response to the power reset request signal.