KR20040062219A - Power Line Communication IP Router - Google Patents

Abstract

PURPOSE: A PLC(Power Line Communication) IP sharer is provided to transmit/receive a communication information signal through a power line, in order to share one approved IP in various PCs, thereby being easily constructed with the use of a home power line without constructing another LAN. CONSTITUTION: An IP sharer(10) receives a communication information signal, and connects the received signal to various user PCs through an LAN. A PLC module(20) communicates with the various user PCs in power line to transceive the communication information signal in connection with the IP sharer(10). A power line coupling unit(30) inserts the communication information signal into the power line in connection with the PLC module(20). The PLC module(20) comprises as follows. An I/O interface inputs/outputs the communication information signal. A signal processing unit/EEPROM modulates/demodulates/codes the signal. An analog front end converts the information signal, filters/amplifies the signal, and controls a gain.

Description

Power Line Communication IP Router

In general, power lines are basic network networks installed anywhere in the world, and engineers around the world have made constant efforts to use them as communication networks.

If the power line is secured through a communication network, it is not necessary to establish a separate communication network, which will drastically reduce labor and LAN material costs, and will also lower the user fee, which will be able to spread the Internet at a low price to many people who are marginalized from information and communication benefits.

Looking at the principle of power line communication, the electricity of AC flows through the wires coming into our home, and the high-frequency communication information signals of several hundred KHz ~ several tens of KHz are put together on the wires, and the communication terminal selects only the communication information signal from the electric wires, This is how you make it available.

The present invention relates to a power line communication IP router, and adds a power line communication output port to an existing IP router.

Existing IP sharer is a product created by the desire to have a separate server computer and set various properties and to connect multiple computer terminals to the Internet using one public IP. By adding a communication output port to replace a power line with a LAN, it eliminates the hassle of constituting a communication network, making it easier to configure the network, and also has great advantages in preventing monetary and time conservation and damage to the building aesthetics.

The power line communication IP router of the present invention is equipped with a network address translation function for automatically allocating a private IP so that multiple PCs can share one public IP assigned from an Internet service provider (ISP). Connected to an IP router and connected to it, a PLC (Power Line Communication) module that transmits / receives communication information signals with a subscriber PC so that the power line can be used as a LAN, and a power line coupling unit that inserts the synchronized signals into the power line. It consists of.

1 is a block diagram schematically illustrating an existing IP router scheme.

Memory block that contains firmware that automatically allocates private IP through the Ethernet physical layer receiver through the Ethernet physical layer receiver, and is embedded in the memory block connected to the physical layer receiver. Main controller that assigns and controls private IP to each computer terminal using firmware, and a display device that displays it, and a private IP at the rear of the main controller and the physical layer receiver. It consists of a Port Switch Controller that controls switching and Ethernet LAN Port that is connected to several subscriber PCs and LAN.

The present invention intends to develop a power line communication IP router, which is an essential technology for building an internal communication network or network using a power line, and a technology having an existing IP sharer, that is, a technology that allows multiple PCs to share one public IP with each other, Its purpose is to accept network address translation technology that automatically grants virtual IP, and to develop a power line communication terminal and a power line communication matching unit to utilize the power line as a communication network.

1 is an explanatory diagram illustrating a conventional IP router;

2 is a block diagram schematically illustrating a configuration of a power line communication IP router according to the present invention;

3 is a detailed block diagram of the item 20 sector in FIG. 2;

4 is a detailed block diagram of the item 30 section in FIG.

* Explanation of symbols for the main sectors in the drawing

10: Existing IP Router

20: PLC Module

30: Power Line Coupling Unit

201: I / O Interface

202: Signal Processing Unit, EEPROM

203: Analog Front End

301: Matching Transformer

302: Power Off Capacitor

303: Surge Protector

The power line communication IP router according to the present invention for achieving the above object is a PLC module capable of communicating with a user PC, a power line connected to the existing IP router and the existing IP router to receive the communication information signal and the existing IP router, and Characterized in that it consists of a Power Line Coupling Unit for inserting the communication information signal from the PLC Module to the power line.

Hereinafter, a power line communication IP router of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram schematically illustrating a configuration of a power line communication IP router according to the present invention.

As shown, the power line communication IP sharer receives the communication information signal and connects the signal to a plurality of user PCs in a LAN, and the IP sharer 10 is connected to the IP sharer 10 and the communication information signal. It consists of a PLC Module (20) that communicates with a plurality of user PCs on a power line, and a Power Line Coupling Unit (30) connected to the PLC Module (20) to insert a communication information signal into the power line.

FIG. 3 is a detailed block diagram of the above-described FIG. 2, item 20 section, which shows a communication information signal as a PLC module 20 which allows communication information signals from the IP router 10 to communicate with multiple user PCs on a power line. I / O Interface 201 for input and output, Signal Processing Unit / EEPROM 202 for converting, demodulating and encrypting data, and Analog Front End 203 for connecting to Power Line Coupling Unit 30. do.

That is, the signal input from the existing IP router 10 is data-signaled and encrypted, amplified by the Power Line Coupling Unit 30 through the BPF (Band Pass Filter) through the DAC (Digital Analog Converter), and through the power line. Signals received from several PCs are passed through AGP (Auto Gain Control) through BPF (Band Pass Filter), and then output through the ADC (Analog Digital Converter) to the existing IP router 10.

FIG. 4 is a detailed block diagram of the aforementioned section of FIG. 2, item 30, which is a circuit for creating an optimal state for inserting a communication information signal from the PLC module 20 into a power line in order to exchange with multiple PCs. Matching transformer 301 which receives a signal from the circuit 20 and performs impedance matching, and a power cut-off capacitor 302 which inserts the signal from the matching transformer 301 into a household power line and cuts off the AC component and voltage of the household power line. And a surge protector 303 which protects the PLC module 20 from an instantaneous voltage transmitted to the power line between the matching transformer 301 and the power interruption capacitor 302.

As described above, according to the power line communication IP sharer of the present invention, by transmitting and receiving a communication information signal through a power line, without establishing a separate LAN so that multiple PCs can share one public IP with each other. It can be easily built using household power lines.

In addition, through this technology, there is an advantage that can be used as an alternative to the coaxial network, telecom, CCTV, cable TV as well as the Internet.

Claims (3)

In the home or office network or LAN construction method PLC module which is connected to IP router which receives WAN (communication network) signal and communicates communication information signal with several user PCs through power line; And a power line communication IP router connected to the PLC module and configured to insert a communication information signal into a power line. The method of claim 1, wherein the PLC Module, I / O Interface for inputting and outputting communication information signal output from IP router; Signal Processing Unit / EEPROM for dataizing, modulating, demodulating and encrypting communication information signals; Power line communication IP router with analog front end that converts communication information signal from analog to digital or digital to analog, filtering, amplifying and adjusting gain. The method of claim 1, wherein the power line coupling unit, Matching transformer which accepts the signals transmitted and received from the PLC module 20 and performs impedance matching; A power cut-off capacitor which inserts a signal from the matching transformer into a home power line and cuts off an AC component and a voltage of the home power line; And a surge protector configured to protect the PLC module (20) from an instantaneous voltage delivered to a power line between the matching transformer and the power interruption capacitor.