KR20010076510A - Power line communication local area network apparatus - Google Patents

Abstract

PURPOSE: A power line communication LAN(Local Area Network) is provided to construct a relay system for a mobile communication service at a low cost by using the existing power line. CONSTITUTION: A power line and ground line for each phase are connected to a power line communication units(200-1¯200-3), and a power line communication modem control unit(210) capable of connecting the Internet is connected to the power line of 3-phase 4-wire type. Each power line communication unit(200-1¯200-3) comprises a power line communication modem. The power line communication modem control unit(210) is a PC(Personal Computer) embedding three power line communication modem, and has a bridge function for forming a communication signal route and a routing function for connecting the communication unit of a power line LAN with the exclusive line of the external Internet(220).

Description

Power line communication LAN device {POWER LINE COMMUNICATION LOCAL AREA NETWORK APPARATUS}

The present invention relates to communication technology, and more particularly, to a power line communication LAN device.

In general, power line communication is a communication method using a power distribution line such as 110V / 220VAC or 380VAC as a communication line, and there is no need to install a separate communication line.

Such a power line communication has been conventionally proposed to build a cheap and simple data transmission system using an existing power line already installed in an existing facility as a data transmission path.

However, in the conventional transmission system using a power line, there is a problem in that the transmission speed of data and the reliability of the transmission data are deteriorated due to the influence of random noise of the connection devices and load fluctuations caused by on / off operation of the devices.

In addition, there is a conventional problem that the transmission distance is short, which is unsuitable for building a local area network (LAN).

Accordingly, an object of the present invention is to provide a power line communication LAN (LAN) device invented to enable internet access in order to improve the conventional problems.

It is also an object of the present invention to achieve a relay function for security / security check, information retrieval, home automation, factory automation and mobile communication services.

1 is a block diagram of a typical single-phase two-wire power line communication LAN.

2 is a configuration diagram of a three-phase four-wire power line communication LAN for the present invention.

3 is a block diagram showing a first embodiment of a power line communication unit in FIG.

4 is a block diagram showing a second embodiment of the power line communication unit in FIG.

Fig. 5 is a block diagram showing a third embodiment of the power line communication unit in Fig. 2;

Figure 6 is a block diagram showing a fourth embodiment of the power line communication unit in Figure 2;

7 is a configuration diagram showing a case where the present invention is applied to a plurality of buildings.

Figure 8 is a block diagram showing a first embodiment for a CCTV security network in the present invention.

Figure 9 is a block diagram showing a second embodiment for a CCTV security network in the present invention.

FIG. 10 is a configuration diagram when the embodiment of FIG. 9 is applied to a plurality of buildings in the present invention. FIG.

11 is a block diagram of a power line communication LAN for home automation in the present invention.

12 is a block diagram of a power line communication LAN for factory automation in the present invention.

Figure 13 is a block diagram of a power line communication LAN (LAN) for mobile communication relay in the present invention.

Explanation of symbols on the main parts of the drawings

200-1 to 200-N: power line communication unit 210: power line communication modem control unit

220: Internet 292: power line communication unit control unit

In the power line communication apparatus using a three-phase four-wire power line as a communication line in order to achieve the above object, the present invention is connected to any phase power line of the three-phase four-line power line to provide a control signal for driving the controlled device. A plurality of power line communication unit control units for transmitting and detecting and determining a control state at that time, and a communication path between the plurality of power line communication unit control units by a bridge function, and routing the plurality of power line communication unit control units to the Internet by a routing function. And a power line communication modem control unit for connection.

The plurality of power line communication unit controllers are characterized in that a plurality of power line communication units connected to the control target device are connected to each other by a single-phase two-wire power line.

The transmission signal between the plurality of power line communication units and the power line communication unit control unit, and the plurality of power line communication unit control unit and the power line communication modem control unit includes data and a unique identification number (ID) of the target side.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In general, the single-phase two-wire power line communication LAN (LAN) is configured by connecting the power line communication units 100-1 to 100-N in parallel to the power lines of the single-phase two-wire as shown in the configuration diagram of FIG.

The power line communication units 100-1 to 100-N are configured to output a transmission signal in the form of a frame including output data and a unique number (ID) of the target side power line communication unit.

Referring to the operation of the single-phase two-wire power line communication LAN as follows.

Signal connection between power line communication units 100-1 to 100-N connected in parallel on a single-phase two-wire power line depends on the presence or absence of a power line communication signal detected from the power line.

First, when it is detected that there is no communication signal on the power line, the power line communication unit (for example, 100-1) that wants to transmit data among the power line communication units 100-1 to 100 -N transmits data to the target power line communication unit. In order to convert the data into a frame form by including the unique number (ID) of the target power line communication unit in the data, a transmission signal of the converted frame form is transmitted.

At this time, the power line communication unit 100-2 to 100-N extracts a unique number (ID) included in a transmission signal carried on a single-phase two-wire power line, and compares and determines whether the power line communication unit matches its own number.

Accordingly, when one of the power line communication units 100-2 to 100 -N (for example, 100 -N) determines that the unique number matches, the power line communication unit 100 -N is connected to the single-phase 2 by signal connection. Data is extracted from the transmission signal carried on the line power line.

If there is a communication signal in the single-phase two-wire power line as described above, the power line communication unit 100-1 retransmits data when the single-phase two-wire power line is idle after waiting for a predetermined time.

However, since transmission distances between the power line communication units 100-1 to 100 -N are different, collisions may occur when data is transmitted from each communication unit in some cases.

In this case, the transmitting side which detects the collision signal stops the data transmission for a while and then detects the use state of the single-phase two-wire power line again.

Accordingly, when it is determined that the power line is not in an idle state, retransmission of data is attempted.

On the other hand, the present invention constitutes a power line communication LAN (LAN) capable of internet access.

That is, the power line communication LAN of the present invention can connect the power line communication units 200-1 to 200-3 to the power line and the ground line in each of the power lines and the ground line as shown in FIG. The power line communication modem control unit 210 is connected to a three-phase four-wire power line.

The power line communication units 200-1 to 200-3 have power line communication modems, and signal connections are made in the same manner as in FIG.

The power line communication modem control unit 210 is a PC (PC) having three power line communication modems each having a unique number (ID), and forms a communication path between different single-phase two-wire power lines distributed from three-phase four-wire power lines. That is, it is configured to have a bridge function for forming a communication signal route, and a communication path formed between the communication unit of the power line LAN and the dedicated line of the external Internet 220, that is, a routing function for connecting the internal communication network and the external communication network. do.

Referring to the operation of the power line communication LAN for the present invention as follows.

Communication between the power line communication units 200-1 to 200-3 is performed by a bridge function provided in the power line communication modem control unit 210.

For example, when data is transmitted from the power line communication unit 200-1 to the power line communication unit 200-3, the power line communication modem control unit 210 executes a bridge function to perform the bridge function. It will form a communication path between (200-3).

Accordingly, data transmitted from the power line communication unit 200-1 is transmitted to the power line communication unit 200-3 via the power line communication modem control unit 210.

That is, the communication path between the different single-phase two-wire power lines distributed from the three-phase four-wire power line is formed by the bridge function of the power line communication modem control unit 210, and each of the power line communication units 200-1 to 200-3 is connected to each other. The power line communication modem control unit 210 is connected in the same manner as the configuration of FIG. 1 to perform communication in the same manner.

In addition, communication between the power line communication units 200-1 to 200-3 and the Internet 220 is performed by a routing function provided in the power line communication modem control unit 210.

For example, when the Internet 220 connection is requested from the power line communication unit 200-1, the power line communication modem control unit 210 executes a routing function to connect the power line communication unit 200-1 to the internet 220. ).

Accordingly, it is possible to perform a desired information search and information transmission from the Internet using the power line communication unit 200-1.

The power line communication units 200-1 to 200-3 may be configured as shown in FIGS. 3 to 6.

FIG. 3 is a block diagram of a first embodiment of a power line communication unit for implementing a PC communication network. As shown therein, a single phase two-wire power line is connected to a PC (through a power line communication modem 231 having a unique number (ID)). And a signal line for transmitting and receiving data between the power line communication modem 231 and the PC 232.

That is, the power line communication modem 231 transmits and receives data between the single-phase two-wire power lines in the PC 232 while supplying power to the PC 232.

Figure 4 is a block diagram of a second embodiment of a power line communication unit for implementing a CCTV network, as shown therein, a single-phase two-wire power line via a power line communication modem 241 having a unique number (ID) CCTV camera 243 It is configured to connect to the interface unit 242 for signal matching between the power line communication modem 241 and the CCTV camera 243.

FIG. 5 is a block diagram of a third embodiment of a power line communication unit for remote control or data measurement, as shown therein, for remotely measuring a single-phase two-wire power line via a power line communication modem 251 having a unique number (ID); It is connected to the drive control sensor / driver 253 and is configured by connecting the interface unit 252 for signal matching between the power line communication modem 251 and the sensor / driver 253.

Fig. 6 is a block diagram of a fourth embodiment of a power line communication unit for an underground relay system of a mobile communication service, and as shown therein, a single-phase two-wire power line through a power line communication modem 261 having a unique number (ID); It is connected to the transmitter / receiver 263 and is configured by connecting the interface unit 262 for signal matching between the power line communication modem 261 and the transmitter / receiver 263.

The transmitter / receiver 263 is configured as a CDMA / TDMA transceiver.

Therefore, the case where the above embodiment is applied will be described with reference to FIGS. 7 to 13.

Fig. 7 is a block diagram of a power line communication LAN constructed in a plurality of (eg, K) buildings such as an apartment complex.

That is, the block diagram of FIG. 7 connects a power line communication modem control unit 210 capable of connecting the Internet 220 to a three-phase four-wire power line as shown in FIG. 2, and connects each phase of the three-phase four-wire power line to a plurality of buildings. In a proper connection therein, a plurality of (eg, K) buildings are provided with switchboards 271-1 to 271 -M on each floor in the building, and each of the switchboards 271-1 to 271 -M is configured in FIG. As shown in the drawing, N power line communication units 272-1 to 272-N each having a unique number ID are connected in parallel.

Each of the N power line communication units 271-1 to 271 -N provided in each floor of each building is a power line communication unit provided in each call room.

In this case, the signal connection between power line communication units in the same floor or the same building is made by the method of FIG.

At this time, the data frame transmitted to the transmission side power line communication unit includes transmission data and a unique number (ID) of the destination side power line communication unit.

Therefore, the signal connection between the power line communication unit on the transmission side and the destination side is made by recognizing the unique number ID.

In addition, a communication path between a plurality of buildings using different single-phase two-wire power lines distributed from three-phase four-wire power lines is made by a bridge function provided in the power line communication modem control unit 210.

Then, the connection between each of the (K * M * N) power line communication units and the Internet 220 provided in the plurality of buildings is made by a routing function provided in the power line communication modem control unit 210.

On the other hand, the security system network in a general home or office can be configured as shown in the example of FIG.

That is, Fig. 8 is connected to the power line communication unit 282 in which the power line communication units 283-1 to 283-P are connected in parallel to the Internet 280, and is connected to the outside through the signal breaker 284 and the switchboard 281. Configure to connect to the power line.

The power line communication unit 282 is configured as shown in the example of FIG. 3, and the power line communication units 283-1 to 283 -P are illustrated in FIG. 4 so that each of the P cameras respectively installed in an arbitrary place is connected. Configure together.

The signal breaker 284 is configured to block external transmission of internal signals transmitted from the power line communication units 283-1 to 283 -P while executing supply of the external power to the inside.

Therefore, the PC provided in the power line communication unit 282 reads the signal transmitted from the power line communication units 283-1 to 283 -P and displays the situation at each place on the monitor screen to check security and crime prevention. This is done.

The power line communication unit 282 may search for and transmit necessary information after accessing the Internet 280 using the PC.

In addition, as shown in FIG. 9, a system capable of internal security / security and Internet access is commonly configured by connecting each power line communication unit provided in a general home or office to the power line communication modem control unit 210 as shown in FIG. 7. can do.

That is, Figure 9 is connected to one port of the power line communication unit control unit 292 and the power line communication unit 293 to one port of the switchboard 291 through the signal breaker 294 and the other side of the power line communication unit control unit 292 The port is connected to the other port of the switchboard 292 through the signal breaker 294 to be connected to the power line communication modem control unit 210.

The power line communication modem control unit 210 is configured to perform a signal connection between a connection to the Internet 220 and a power line communication unit connected to power lines of different phases of a three-phase four-wire power line as shown in FIG.

The power line communication unit control unit 292 has a unique number ID1 and a power line communication modem 292-1 for performing internal security / security, and has a unique number ID2 for data communication with the outside. A PC 292-3 connected to the power line communication modem 292-2 and the power line communication modem 292-1 and 292-2 to perform an internal security / security function and data communication with the outside. ).

The signal breaker 294 is configured to block the external transmission of the internal signal transmitted from the power line communication unit 293 while executing the supply of the external power to the inside to prevent a collision between the internal signal and the Internet signal.

Embodiments of such a configuration may perform internal security / security functions and remote monitoring functions via an Internet connection.

First, in case of internal security / security, the PC 292-3 provided in the power line communication unit control unit 292 connects the power line communication modem 292-1 with the power line communication unit 293, a CCTV camera (not shown). It can receive the image data monitored by.

Accordingly, the PC 292-3 reads the imaging data transmitted from the power line communication unit 293 to display a security / security situation in a general home or office on a monitor screen.

In the remote monitoring function through the Internet, the user connects the power line communication modem control unit 210 by connecting to the Internet 220 from a remote place and requests a connection to the power line communication unit control unit 292.

At this time, the power line communication modem control unit 210 connects the Internet 220 and the power line communication modem 292-2 provided in the power line communication unit control unit 292 by a routing function if it meets a request such as a password. .

Accordingly, the user drives the PC 292-3 remotely to check the internal security / security situation monitored from the CCTV camera connected to the power line communication unit 293.

In addition, when installing a CCTV camera for security / crime prevention and management for a plurality of buildings (for example, K) such as an apartment complex, power line communication LAN (LAN) can be configured as shown in FIG.

FIG. 10 is configured in the same manner as in FIG. 7 except that the external power line is directly connected to the power line communication unit controller 312 and connected through a switchboard.

That is, FIG. 10 is a power line communication modem control unit 210 capable of connecting the Internet 220 to a three-phase four-wire power line as shown in FIG. 2 and properly connecting each phase of the three-phase four-wire power line in a plurality of buildings. In the case of a plurality of (e.g., K) buildings, each floor has three switchboards 311-1 to 311-M, and each of the switchboards 311-1 to 311-M has two internal and external switches. A power line communication unit control unit 312 having a unique number (ID) is connected, and an external power line is directly connected to the power line communication unit control unit 312.

Here, although one power line communication unit control unit 312 is illustrated as being connected to each switchboard 311-1 to 311 -M provided in each room of each floor, in reality, the number of rooms in each floor (for example, N) As many as are connected.

The power line communication unit controller 312 is configured as shown in FIG.

Accordingly, the embodiment configured as shown in FIG. 10 can check the security / security situation inside each room, as well as the power line communication unit controller 312 installed in each building by the bridge function of the power line communication modem control unit 210. This enables communication between the teams, allowing them to check the security / method status of each building in the management office.

That is, to check the security situation in a complex building such as an officetel PC (PC) provided in the power line communication unit control unit 312 to the power line communication modem control unit 210 by using the power line to capture the image data received from the CCTV camera By transmitting, the management office manages security / security checks inside the building.

In this case, the power line communication modem control unit 210 performs a bridge function for signal connection between an office and a management room connected to three phase four wire power lines in different phases.

In addition, since the power line communication modem for the Internet connection is provided in the power line communication unit controller 312, the user connects to the power line communication modem control unit 210 through the Internet 220 at a remote location, and then installs the power line communication in his / her call room. By connecting to the unit control unit 312 and driving the PC (PC) provided in the power line communication unit control unit 312 it is possible to check the internal security / security situation monitored by the CCTV camera.

That is, in FIG. 10, the power line communication unit controller 312 performs the same operation as that of FIG. 9.

In addition, a plurality of power line communication units may be connected to the power line communication unit control unit illustrated in FIG. 9 to configure a power line communication LAN for home appliance automation and information as shown in FIG.

That is, FIG. 11 shows the power line communication unit control unit 322 connected in parallel to the switchboard 321 and the signal breaker 324 connected in series, and Q power line communication units 323-to one port of the power line communication unit control unit 322. 1 to 323-Q are connected in parallel, and the other port of the power line communication unit control unit 322 is connected to any one port of the power line communication modem control unit 210.

The power line communication modem control unit 210 is configured to perform a signal connection between a connection to the Internet 220 and a power line communication unit connected to power lines of different phases of a three-phase four-wire power line as shown in FIG.

The power line communication unit controller 322 has a unique number ID1 and a power line communication modem 322-1 for performing internal security / security, and has a unique number ID2 for data communication with the outside. PC (322-3) connected to the power line communication modem (322-2) and the power line communication modem (322-1) (322-2) to perform internal security / security functions and data communication with the outside. ).

The power line communication units 323-1 to 323-Q are equipped with a power line communication modem and an interface unit, and are each equipped with a CCTV camera, a lamp, a security / alarm device, an air conditioner, a TV / VTR, a curtain, a refrigerator, a heater, and a heater. To configure.

The signal breaker 324 is configured to block external transmission of internal signals transmitted from the power line communication units 323-1 to 323-Q while supplying the external power to the interior, thereby colliding with internal signals and the Internet signal. To prevent.

Therefore, the embodiment of Fig. 11 drives the PC 322-3 provided in the power line communication unit controller 322 to control a CCTV camera, a lamp, a security / alarm device, an air conditioner, a TV / VTR, a curtain, a refrigerator, ... After generating a control signal for driving a home appliance, such as a heating device, and transmits it to each of the power line communication units 323-1 to 323-Q through the power line communication modem 322-2. It will perform many functions such as checking, turning lights on / off, hanging curtains and / or alerting subscribers in case of a disaster or disaster.

In addition, the power line communication modem control unit 322 is provided with a power line communication modem (322-1) can be connected to the Internet 210 through the power line communication modem control unit 210, so that the subscriber can perform the above functions even from a remote location. have.

Meanwhile, a power line communication LAN for factory automation may be configured as shown in FIG. 12 in the same manner as the home automation.

That is, FIG. 12 connects a three-phase four-wire power line to a global controller 335 connected to a PC 336 for a data server capable of accessing the Internet 337, and a plurality of layers of each phase power line of the three-phase four-wire power line. In connection with each of the M floors, the switchboard 331, the local controller 332, the power line communication units 333-1 to 333-3, and the signal breaker 334 are provided in each of the plurality of floors.

The switchboard 331, the local controller 332, the power line communication units 333-1 to 333-3, and the signal breaker 334 have power lines provided with any phase power lines in the switchboard 331 and the local controller 332. A signal breaker 334 connected to the communication modem 332-1 and connected to the switchboard 331 is connected to a power line communication modem 332-2 provided in the local controller 332 and a power line communication unit 333-. 1 to 333-3).

The power line communication unit 333-1 to 333-3 includes a power line modem 251, an interface unit 252, and a sensor / drive unit 253 as shown in FIG. 5 to drive a mechanical device and check its driving state. do.

Therefore, in the embodiment of Fig. 12, when the control signal including the unique number (ID) of the power line communication unit is generated from the local controller 332, the power line communication units 333-1 to 333-3 are the unique number ID. Determine if is your own number.

At this time, the power line communication unit (for example, 333-1) having a unique ID (ID) among the power line communication units 333-1 to 333-3 may transmit a control signal received from the power line communication modem 251 to the interface unit 252. ) Is matched and transmitted to the sensor / drive unit 253.

Accordingly, the sensor / drive unit 253 drives the mechanical device by the control signal.

After that, when the sensor / drive unit 253 detects the driving state of the mechanical device, the power line communication unit 333-1 converts the interface unit 252 into a suitable signal form and converts the power line communication modem 251 into the power line communication modem 251 through the power line. And transmits to the controller 332.

At this time, the signal transmitted from the power line communication unit 333-1 is blocked by the signal breaker 324 to be transmitted to the outside and is transmitted only to the local controller 332.

Accordingly, the local controller 332 can know the driving state of the mechanical device by reading the signal transmitted from the power line communication unit 333-1.

On the other hand, since the local controller 332 provided in each layer is connected to an arbitrary phase power line, the control signal from the global controller 335 is received by the power line communication modem 332-1 to receive the power line communication units 333-1 to 333. -3), and conversely, the driving state of the mechanical device can be transmitted to the global controller 335 through the power line communication modem 332-1.

Since the PC 336 for data server that can be connected to the Internet 337 is connected to the global controller 335, it is possible to connect to the Internet using the local controller 332.

In addition, the present invention can be configured as shown in Figure 13 the power line communication LAN (LAN) for mobile communication service relay.

That is, Fig. 13 is a three-phase four-wire power line connected to the three-phase four-wire power line to the power line communication modem control unit 210 capable of connecting to the Internet 220 to the underground power line communication units 340-1 to 340-M. Arbitrary phase power line of is configured by properly connecting to the underground relay power line communication unit (340-1 ~ 340-M) and the ground relay power line communication unit 350.

The power line communication modem control unit 210 is composed of a PC (PC) and three power line communication modems each having a unique number, and a bridge function and the Internet to form a communication path between each phase power line of a three-phase four-wire power line. And a routing function for accessing 220.

The power line communication units 340-1 to 340 -M are constituted by a power line communication modem 261, an interface unit 262, and a transmitter / receiver 263 which are assigned a unique number as in FIG. 6.

That is, in the mobile communication service relay, the embodiment of FIG. 13 uses an existing power line without installing a separate dedicated communication cable in an underground space such as an underpass, an underground mall, or an underground parking lot, where a mobile communication service is difficult to provide. It is to.

Therefore, referring to the operation of the embodiment of Fig. 13, when the transceiver 263 receives the radio signal, the power line communication unit 350 converts the interface unit 265 into a signal suitable for the power line communication modem 261, and the power line communication. The modem 261 transmits the signal to the single-phase two-wire power line.

At this time, the power line communication modem control unit 210 executes the bridge function to include a unique number of the power line communication units 340-1 to 340-M provided in each basement floor in the signal received from the power line communication unit 350. After performing the bridge function, the bridge function is transmitted to the power line communication units 340-1 to 340-M.

Accordingly, when the power line communication modem 261 receives the signal transmitted through the single-phase two-wire power line, the power line communication units 340-1 to 340 -M have a signal form suitable for the transceiver 263. By converting and transmitting the radio signal to the underground space, the transceiver 263 can receive the service provided by the corresponding subscriber who purchased the mobile terminal.

On the contrary, when the subscriber requests a service such as a call using a mobile terminal, the power line communication unit (for example, 340-1) located in the same basement space among the power line communication units 340-1 to 340-M may be configured to include a transceiver 263. The transmission signal from the mobile terminal is received and the interface unit 262 converts the signal into a signal form suitable for the power line communication modem 261.

At this time, when the power line communication modem 261 is transmitted to the single-phase two-line power line is transmitted to the power line communication unit 350 by the bridge function of the power line communication modem control unit 210.

Accordingly, when the power line communication modem 261 receives the transmission signal, the power line communication unit 350 is matched by the interface unit 262 and then transmitted to the space by the transceiver 263 in case of a call. To provide call services.

In addition, as an example of a subscriber in an underground space, if a subscriber currently in the basement 1 floor requests an Internet connection to a mobile communication terminal, the power line communication unit 340-1 transmits it to the power line communication modem control unit 210 and the power line communication. The modem control unit 210 executes a routing function to connect with the Internet 220 so as to enable communication connection between the subscriber's mobile communication terminal on the first basement floor and the Internet 220.

As described in detail above, the present invention provides a relay for a mobile communication service such as a management / security system, a home appliance information system, a factory automation system, and the Internet of a general home or apartment or office using an existing power line without separately installing a transmission line. It is effective to build the system at low cost.

Claims (10)

A plurality of power line communication unit controllers connected to any phase power line of the three-phase four-wire power line and transmitting a control signal for driving the controlled device to the plurality of power line communication units and detecting and determining the control state at that time; And a power line communication modem control unit which is connected to a four-wire power line and forms a communication path between the plurality of power line communication unit control units by a bridge function and connects the plurality of power line communication unit control units to the Internet by a routing function. Power line communication LAN device. The power line communication unit control unit comprises a first power line communication modem for communicating with the plurality of power line communication units, and a second power line communication modem for communicating with the power line communication modem control unit. Power line communication LAN device characterized in that. The power line communication of claim 2, wherein the plurality of power line communication unit controllers transmit external power to the plurality of power line communication units and include a signal breaker for preventing a collision between an internal transmission signal and an external transmission signal. LAN device. The power line communication LAN apparatus according to any one of claims 1 to 5, wherein the transmission signal comprises a unique identification number (ID) of a target side in transmission data. The power line communication LAN apparatus according to claim 1, wherein a connection is made by recognizing a unique identification number. 3. The power line communication unit according to claim 1 or 2, wherein the plurality of power line communication units are configured to communicate with a power line communication modem for supplying single-phase power to the power line communication unit control unit and for transmission signal matching between a control target device and the power line communication modem. Power line communication LAN device characterized by comprising an interface unit. The power line communication LAN device of claim 6, wherein the control target device is configured as a CCTV camera to achieve a security / security function. 7. The power line communication LAN apparatus of claim 6, wherein the controlling device comprises a transmission / reception relay for mobile communication. 3. The power line communication modem control unit has a unique identification number, each of the three power line communication modems for data input and output with a plurality of power line communication unit controllers, and a server PC for Internet connection. Power line communication LAN device, characterized in that consisting of. The power line communication LAN device according to claim 1 or 2, wherein the power line communication unit control unit further comprises a local controller, and the power line communication modem control unit further comprises a global controller to configure factory automation.