| 摘要 |
PURPOSE: A wireless communication apparatus of an electric train system is provided to install wireless access points within an inside of the electric train and use an ultra-high speed wireless data communication and the Internet by using a wireless LAN(Local Area Network) card of a notebook computer/PDA(Personal Digital Assistant). CONSTITUTION: A PLC(Power Line Communication) hub(31) is connected to a line connected to a main circuit filter(16) of the first circuit divide switch(15) and then performs a power line communication hub function. A UTP(Unshield Twisted Pair) cable(32) makes the PLC hub(31) and a wireless LAN AP(Access point)(33) connected with each other. The wireless LAN AP(33) is connected to the PLC hub(31) through the UTP cable(32), performs a wireless access point function and has wireless main/sub antennas(34,35). The first router makes the PLC hub(31) and the wireless LAN AP(33) connected each other and performs a data communication distribution traffic process. A wireless LAN bridge is connected to the first router, has wireless main/sub antennas(34,35) and then performs a wireless LAN bridge function. The second router makes the PLC hub(31) and the wireless LAN bridge connected to an Internet network and then performs a data communication distribution traffic process.
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