KR100671484B1 - Remote communication network system on internet using floating ip address and construction method thereof - Google Patents

Abstract

Network management equipment or module for a remote monitor/control system in the floating IP(Internet Protocol) environment Internet, and a communication method using the same are provided to communicate with nationwide remote places through the Internet, and correct a remote control program and offer after-sale services without visiting a remote or central monitoring room. The network management equipment or module(214,236) is installed to the central control room(200) and/or each remote place(230a-230n), and enables a remote or central control device allocated as a private fixed IP to receive communication data by converting a destination floating IP of the communication data into the private fixed IP according to a port number of the communication data received through the Internet(220). If the communication data transmitted from the central or remote control device corresponds to the central control room and/or each remote place, the network management equipment or module makes the communication data transferred through the Internet by changing the destination IP address into the matched floating IP in reference to a floating IP table.

Description

Network management equipment or network management module for remote monitoring and control system on the Internet in floating IP environment and communication method using the same

1 is a configuration block diagram of a remote monitoring and control communication system according to the prior art.

Figure 2 is a block diagram of a network management equipment or network management module for a remote monitoring and control system on the Internet of the floating IP environment according to an embodiment of the present invention.

3 is a flowchart illustrating a communication process of a remote monitoring control system using an internet network in a floating IP address environment according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: central monitoring room according to the prior art 120: Internet network

130: remote place according to the prior art

200: central monitoring room 220: Internet network

230: remote place

The present invention relates to a network management device or a network management module for a remote monitoring control system and a method for providing the same in a floating IP environment, and more particularly, to a remote automatic control system, a remote monitoring control system, an unmanned remote monitoring control system, Central monitoring of video signal and remote control signal using internet network that supports floating IP (Internet Protocol) address in TM / TC, TELEMETERING & TELECONTROL (hereinafter referred to as 'remote control device') The present invention relates to a system and a method for providing the same that enable real-time two-way communication between a control system and a remote site or a remote site.

Due to the rapid development of information and communication technology, the unmanned remote control device has been used in many fields where a person directly monitors and controls conventionally. Such unmanned remote control devices are used in various fields. In particular, the control equipment (eg, drain pumping station, pressurized pumping station, relay pumping station, water purification plant, In the field where automatic control equipment such as a drainage basin is used, the utilization thereof is gradually increasing.

The remote control device as described above is usually controlled by a programmable logic controller (PLC) due to the nature of automatic control, and the remote control device of a specific remote site (that is, an installation place of a facility controlled by the remote control device) is remotely controlled. Connected to the central monitoring system to control the device remotely, it transmits the information such as current status, abnormal situation, control status, etc. of the controlled equipment, and receives the command sent from the central monitoring system and controls according to the received command. To control the device.

Therefore, the remote control apparatus and the central monitoring control system are configured to be connected to each other to perform data communication. Conventionally, such a data communication network communicates in a RS-232 or RS-422 manner between a remote control device and a dedicated line modem using a dedicated line provided by a telecommunication company (for example, a dedicated line provided by KT), and a dedicated line. The modem is configured to communicate with the central surveillance control system of the central surveillance room via the Korea Telecom dedicated network. However, although the configuration of a communication network using such a dedicated line is common, such a configuration is a one-to-one correspondence between a central and a remote location, and a single central monitoring control system controls a plurality of remote sites, or The disadvantage is that direct communication is not possible. That is, when the remote site 1 and the remote site 2 want to communicate with each other, there is a problem that communication between remote sites is possible only by relaying communication at the central monitoring control system or gateway or TM master, and the central monitoring control system is installed. There is a problem in that communication with remote sites is not possible at other places, and a large number of leased lines must be managed.

In order to solve the problems of the prior art, the recent research and development of the remote control device using the Internet communication network is in progress. As a result of this research and development, the recently-proposed PLC (PROGRAMMABLE LOGIC CONTROLLER) has added TCP / IP protocol support function that enables Ethernet communication to enable data communication through the Internet communication network. Therefore, a remote monitoring and control network using an internet communication network has been proposed.

1 is a block diagram of a remote monitoring and control communication system using the Internet communication network using a fixed IP according to the prior art. Referring to Figure 1 will be described the configuration of a remote monitoring control communication system according to the prior art.

As shown in Figure 1, the remote control apparatus using the Internet communication network according to the prior art is composed of a central monitoring room 100, the Internet network 120 and at least one remote station 130.

The remote control device 134 of the remote station 130 supports only a fixed IP type internet communication protocol due to the characteristics of the remote control device. Therefore, the remote control device using the Internet communication network according to the prior art is configured using a fixed IP.

The central monitoring room 100 includes at least one central monitoring control system 102 and an Internet modem (ADSL modem, router, etc.) 110. The central monitoring control system 102 performs data communication with the controlled device (not shown) of the remote station 130 through the Internet modem 110, and transmits data (current state / special situation) from the remote station 130. / Control state, etc.) to analyze and control the remote station 130 if necessary to control the controlled device. The internet modem 110 receives a fixed IP from an Internet service provider such as Korea Telecom and performs internet communication.

 The remote station 130 is installed at a remote place where the controlled device is installed to remotely monitor and control the controlled device. Remote station 130 is composed of a remote control device 134, IP sharer 142, Internet modem 132 and the like. The remote control device 134 measures the state of the controlled device, performs automatic control, transmits data on the state of the controlled device to the central monitoring room 100 through the Internet modem 132, and provides a central monitoring. The control signal transmitted from the room 100 is received to control the controlled device. In addition, the Internet modem 132 is given a fixed IP from an Internet service provider such as Korea Telecom to perform the Internet communication.

In the communication system configured in this manner, the central monitoring room 100 and the remote station 130 are each provided with independent fixed IP addresses to perform communication. In addition, since it has a fixed IP address, a separate video server 136 and a video surveillance apparatus 138 are constructed in a separate remote location 130 using a port number, and a remote control device is used by an IP sharer 142. 134 and video surveillance systems 138 and 136 may be configured to communicate using a single fixed IP.

However, in the communication system using the fixed IP method according to the related art, since the central monitoring room 100 and the plurality of remote stations 130 must use the fixed IP, respectively, the router equipment and the Internet dedicated line are constructed in each of the central and remote sites. There should be a problem that the maintenance cost is expensive. In addition, due to the limited fixed IP resources, there is a problem in that it is not easy to obtain a fixed IP when using the Internet network of the Internet service company (Korea Telecom, Hanaro Telecom, Durnet, etc.).

The present invention is to solve the problems of the prior art as described above, by using the Internet communication network under the floating IP address environment to build a communication system of the remote monitoring control system to enable communication with remote locations anywhere in the country, the Internet, Enables remote control program modification and after-sales service without having to travel to remote or central monitoring room, and manages network for remote monitoring control system that can transmit video signal and remote control signal simultaneously through internet using floating IP environment. An object of the present invention is to provide an equipment or a network management module and a method of providing the same.

In order to achieve the object as described above, according to a preferred embodiment of the present invention, the private fixed IP address and the private fixed IP address set automatically or arbitrarily to all components of the central monitoring room and each remote station The floating IP address table is stored, the floating IP address table is updated in real time or periodically, and the network management device, the network management module, and the DNS server using the updated information (DYNAMIC DOMAIN NAME SERVICE SERVER, DDNS SERVER). A remote control communication system connected through an internet network, wherein the destination IP address of the communication data is privately set up in the central monitoring room and / or at each of the remote stations according to a port number of the communication data received through the internet network. Change to fixed IP address and retransmit through internal network. The remote control unit or the central control unit allocated to the fixed IP address receives the communication data, and the communication data sent from the remote control unit or the central control unit is received through the internal network, analyzed, and the corresponding communication result. If the data is communication data corresponding to the central monitoring room and / or each of the remote offices, the destination IP address is changed to the corresponding floating IP address with reference to the floating IP address table, and retransmitted through the internal network. A network management device for a remote monitoring control system or a network management device for a network management module or a network management module using the Internet of a floating IP environment for transmitting communication data is provided.

In addition, in order to achieve the above object, according to another preferred embodiment of the present invention, a communication system using the Internet network of a floating IP address environment, each remote station configured with the internal network and the central monitoring room configured with the internal network In the communication method of (a) a network management equipment or a network management module is provided in each of the internal network to transmit a floating IP address and a private fixed IP address of each of the remote offices and the central monitoring room through a DNS server Receiving and generating a corresponding floating IP address table, respectively; (b) the network management equipment or the network management module of the source receives / analyzes the data transmitted from the component of the source transmitting the data, and if necessary, converts the floating IP address table to a destination address composed of a specific private fixed IP address. Retransmitting to a corresponding destination floating IP address with reference to the Internet network through the internal network; (c) a network management device or a network management module of a remote office or central monitoring room having the destination floating IP address receives / analyzes the data and, if necessary, refers to the received floating IP address by referring to the floating IP address table. Retransmitting through the internal network by changing to a corresponding private fixed IP address; And (d) when the component receiving the data in step (c) returns, the network management equipment or network management module of the remote or central monitoring room having the destination floating IP address performs step (b). Provided is a remote monitoring and control system communication method using an internet network in a floating IP address environment.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment thereof.

2 is a block diagram illustrating a network management device or a network management module for a remote monitoring and control system using an internet network in a floating IP environment according to an embodiment of the present invention.

With reference to the accompanying drawings will be described in detail with respect to the network management equipment or network management module according to the present invention.

As shown in FIG. 2, the network management equipment 236 or the network management module 214 for a remote monitoring control system on the Internet in a floating IP environment according to an exemplary embodiment of the present invention is the central monitoring room 200 or a remote control. The cow 230 is provided.

More preferably, the remote control unit 230 includes a network management device implemented as hardware, and the central monitoring room 200 includes a central control unit 202 or a video surveillance control unit 204 constituting the central monitoring room 200. It can be configured and mounted on software. Since the network management device 236 and the network management module 214 are implemented only in hardware, or in software, only the differences between the network management device 236 and the software management device 236 will be described below. The configuration and function of the network management equipment or network management module according to the present invention will be described in detail.

The remote station 230a to 203n (hereinafter described with reference to 230a) is installed at a remote place where a controlled device (not shown) is installed to remotely monitor and control the controlled device, and the network management equipment according to the present invention is provided. As shown in FIG. 2, the remote station 230 may include an internet modem 210, an IP router 208, an internal network of a remote office 240, a network management device 236, and a remote control device 234. Can be.

The remote station 230 is assigned a constant floating IP address from the Internet operator server (not shown), all the components inside the remote station 230 is assigned a constant private fixed IP address. In more detail, the central monitoring room 200 according to the present invention is assigned a floating IP # 1, the components in the central monitoring room 200 (central control device 202, video surveillance control device 204, The printer 206, etc.) are assigned private fixed IP # 1-1 to private fixed IP # 1-n.

In addition, each remote station 230 according to the present invention is assigned a floating IP # 2 (flow IP of the remote station # 1 (230a)) to a floating IP # n (flow IP of the remote station # (n-1)) Based on the remote location # 1 230a, the components (remote control device 234, etc.) in the remote location # 1 230a are assigned private fixed IP # 2-1 to private fixed IP # 2-n. .

Hereinafter, the central monitoring room 200 (floating IP # 1, internal components: private fixed IP # 1-1 ~ private fixed IP # 1-n) and remote station # 1 (230a) (floating IP # 2, internal configuration) Element: Private fixed IP # 2-1 to private fixed IP # 2-n) A preferred embodiment of the network management equipment or network management module for the remote monitoring and control system on the Internet of the floating IP environment according to the present invention It demonstrates in detail.

The internet modem 210 performs data communication through the internet network 220, and generally, an ADSL MODEM used for internet communication may be used. The internet modem 210 is located between the internet network 220 and the IP sharer 208, and transmits data transmitted through the internet network 220 to the IP sharer 208, and is transmitted from the IP sharer 208. The communication data including the destination or source floating IP address is transmitted to the central monitoring room 200 or another remote location 230 having the corresponding floating IP address through the Internet network 220.

The IP sharer 208 constitutes a remote office internal network 240 and relays internal data communication between each device of the remote office 230, and the remote office internal network 240 manages each device (ie, network management) within the remote office. Equipment 236, remote control 234, etc.).

The network management equipment 236 is installed in the remote station 230 to relay / control data communication using the floating IP address and the private fixed IP address. The network management equipment 236 according to the present invention includes a fixed fixed IP address and a fixed fixed IP address which are automatically or arbitrarily set in all components of the central monitoring room 200 and each remote station 230. When the address table is stored and the floating IP address table is changed, the network management equipment 236 updates and uses the floating IP address table in real time through the DNS server 222. That is, the network management equipment 236 transmits its floating IP address change information to the DC server 222 of the fixed IP address when the floating IP address assigned to it is changed, and receives the DL The server 222 transmits corresponding floating IP address change information to the central monitoring room 200 and each remote station 230 constituting the remote control system. The central monitoring room 200 and the network management equipment 236 of each remote station 230 receiving this update the stored floating IP address table so that the correct floating IP address table is always maintained. In the same process, the network management equipment 236 receives the floating IP address change information of the central monitoring room 200 or another remote station 230 from the DNS server 222 to update the stored floating IP address table. do.

Here, the floating IP address table is a table in which a private IP address set automatically or arbitrarily and a floating IP address corresponding to the private fixed IP address are structured and stored. For example, the private fixed IP addresses (private fixed IP # 2-1 to private fixed IP # 2-n) of each component included in the remote location # 1 230a are the floating IPs of the remote location # 1 230a. Corresponding to the address, the components having private fixed IP # 2-1 to private fixed IP # 2-n are structured and stored corresponding to floating IP # 2. Accordingly, the network management device 236 refers to the floating IP address table as described above, and changes the IP address of the destination to which the communication data is to be transmitted to the corresponding floating IP address.

The network management equipment 236 receives data transmitted from the outside (that is, the central monitoring room 200 or another remote location 230) to the remote location 230 through the Internet network 220, and receives the received communication data. The remote control device assigned to the private fixed IP address by changing the destination floating IP address (the floating IP address of the corresponding remote station) of the communication data to the private fixed IP address according to the port number of the communication station and retransmitting it through the internal network 240 of the remote station ( 234 to receive the corresponding communication data.

The remote control apparatus 234 automatically controls a corresponding controlled device (not shown) according to the received data, or collects information such as the state of various controlled devices (not shown) to monitor the central monitoring room 200 or the like. Transfer to another remote location. Such a remote control device 234 may be used a control device such as a PLC (PLC), such a configuration of the remote control device 234 is further adopted because the configuration of the remote control device 234 according to the prior art The above detailed description will be omitted.

The central monitoring room 200 according to the present invention may include an internet modem 210, a central monitoring room internal network 212, an IP router 208, a network management module 214, and a central control unit 202. . The configuration and functions of the Internet modem 210, the IP sharer 208, the central monitoring room internal network 212 are described in the above-described Internet modem 210 of the remote office 230, the IP sharer 208, the remote office internal network ( 240, the description is omitted.

The network management module 214 is a software module mounted in the central control unit 202. The network management module 214 relays data communication between the central monitoring room 200 and each remote station 230 using a private fixed IP address and a floating IP address. Done. At this time, it will be apparent to those skilled in the art that the network management module 214 may be implemented as a separate network management device (not shown) rather than a module type mounted on a specific central control device 202. The network management module 214 performs the same function as the network management equipment 236 of the remote station 230 described above, and will not be described in further detail because there is only a difference in a simple implementation method.

The central control unit 202 is assigned a floating IP address and port number from the network management module 214 and performs data communication with the remote control unit 234 of the remote station 230 to remotely control the remote control unit 234. Control. In addition, the central control unit 202 receives the communication data transmitted from the remote control unit 234 to diagnose the current state of the remote control unit 234, and if the maintenance of the remote control unit 234 requires maintenance It can be configured to provide information and the like.

The DNS server 222 according to the present invention has a fixed IP address and is always connected to the Internet network to exchange information such as an IP address table at any time from each remote station 230 and the central monitoring room 200. Can be. A mobile IP address table for each fixed station IP and a floating IP address corresponding to the private stationary IP of each component of each remote office 230 and the central monitoring room 200, and the remote office 230 or the central monitoring room When the floating IP address of the 200 is changed, the changed floating IP address is received in real time from the remote station 230 or the central monitoring room 200, and the floating IP address table is updated, and the updated floating IP address is centrally monitored. It is transmitted to the room 200 and / or each remote station (230).

In addition, the central monitoring room 200 according to the present invention may further include a video surveillance control device 204, the remote station 230 may further include a video surveillance device (238).

The video surveillance apparatus 238 is configured to be directly connected to the network management equipment 236 by a coaxial cable or a communication cable, and generates video surveillance data for monitoring the status of a remote location and transmits the data to the network management equipment.

The network management device 236 receives / analyzes communication data received from the Internet 240, and when the communication data includes a port number related to the monitoring device, a pan / tilt of the video surveillance device or Video surveillance apparatus control such as audio signal processing is performed. In addition, the surveillance video data is input to the network management equipment 236 through the cable from the video surveillance apparatus 238, the network management equipment 236 processes the input surveillance video data according to a predetermined algorithm image of the central monitoring room The monitoring control device 204 is transmitted.

That is, the network management equipment 236 according to the present invention is to perform the role of the video server of the video surveillance system that is generally used. Since the configuration of the video server follows the conventional technology, further detailed description thereof will be omitted.

When the central monitoring room 200 is equipped with a video surveillance control device 204, the video surveillance control device 204 reproduces the video surveillance data received from the network management equipment 236 according to a predetermined algorithm and stores in the storage device. And, if necessary, to transmit the data to control the video surveillance device 238 of the remote.

Hereinafter, an operation process of the network management equipment according to the present invention taking the above configuration will be described in detail by way of example.

In this case, the floating IP address of the central monitoring room 200 is the floating IP # 1, the remote IP address of the remote station # 1 (230a) is the fixed IP of the remote control device in the floating IP # 2, remote station # 1 (230a) It is assumed that the IP address is private fixed IP # 2-1, the port number is 6001, and the video surveillance processing port number in the remote location # 1 230a is 6002.

First, in the case where communication data is transmitted from the central monitoring room 200 to the remote location # 1 230a, when the communication data is transmitted from the central monitoring room 200 to the floating IP # 2, the remote location # 1 (230a) of the The network management device 236 receives / analyzes the communication data transmitted to the address of the floating IP # 2 through the Internet network 220 and controls the video surveillance apparatus 238 according to the port number, or the floating IP # 2. Change to the private fixed IP # 2-1 corresponding to the port number described above is to be retransmitted through the remote small internal network 240.

Looking at this process in more detail, first, the Internet modem 210 of the remote station # 1 (230a) receives the communication data having the address of the floating IP # 2 through the Internet network 220, and the communication data (IP sharer ( 208). The IP sharer 208 transmits the corresponding communication data to the network management equipment 236 through the remote small internal network 240.

The network management device 236 receives and analyzes corresponding communication data transmitted from the IP sharer 208, and when the port number of the communication data is 6002, pan / tilt of the video surveillance apparatus 238 according to the received communication data or Image surveillance control such as audio signal processing is performed. On the other hand, when the port number of the received communication data is 6001, the destination address of the received communication data is changed from the floating IP # 2 to the private fixed IP # 2-1 of the remote controller 234 corresponding to the port number 6001. The small internal network 240 is retransmitted, and the remote control device 234 receives communication data through the remote small internal network 240.

Second, when communication data is transmitted from the remote control device 234 of the remote station # 1 (230a) to the central monitoring room (200).

The network management equipment 236 receives communication data that should be transmitted from the remote control device 234 to the central monitoring room 200 through the remote office internal network 240. The network management device 236 analyzes the received communication data, and when the communication data is communication data that should be transmitted to the central monitoring room 200 connected through the Internet network 220, the network management equipment 236 refers to the floating IP address table. The destination address is changed and retransmitted to the remote small internal network 240. That is, when the communication data is data to be transmitted to the central monitoring room 200, the destination address of the communication data is changed to the floating IP # 1 and retransmitted. The retransmitted communication data is transmitted to the Internet network 220 through the IP sharer 208 and the Internet modem 210, the central monitoring room 200 is the corresponding data including its floating IP # 1 address Internet network Received via 220.

The process of performing data communication between the central monitoring room 200 and the remote station 230 using the network management module 214 of the central monitoring room 200 is also performed in the same process as the above-described process.

3 is a flowchart illustrating a communication process of a remote monitoring control system using an internet network in a floating IP address environment according to an embodiment of the present invention.

With reference to the accompanying Figure 3 will be described in detail the communication process of the remote monitoring and control communication system according to an embodiment of the present invention.

The network management module 214 of the central monitoring room 200 and the network management equipment 236 of each remote office 230 are connected to the central monitoring room 200 and each remote office through the DDNS server 222. A private fixed IP address set automatically or randomly to all components of 230 and a floating IP address table corresponding to the private fixed IP address are configured / updated (S300).

Next, the network management equipment 236 or the network management module 214 of the origin transmitting the data receives / analyzes the data transmitted from the components (central control device 202, remote control device 234, etc.). When the data is data to be transmitted to the central monitoring room 200 or the remote station 230 connected through the Internet network 220, the destination address composed of a specific private fixed IP address is referred to by referring to the floating IP address table. The IP address is changed to the floating IP address and retransmitted to the Internet network 220 through the internal network 212 or 240 and then transmitted to the destination (S302).

The network management equipment 236 or the network management module 214 of the remote or central monitoring room having the destination floating IP address receives the transmitted data (S304), analyzes the received data (S306), and displays a port number. If the communication data associated with the video surveillance apparatus 238, the control related to the video surveillance apparatus 238, such as processing the pan / tilt (PAN / TILT) or audio signal (S308), the port number, etc. are remote or central monitoring If it corresponds to another component in the room 200, the received destination floating IP address is changed to a corresponding private fixed IP address with reference to the floating IP address table and retransmitted through the internal network 212 or 240 (S310). The component corresponding to the port number receives data transmitted to its private fixed IP address through the internal network 212 or 240 (S312).

If, in step S312, the component receiving the data returns to the origin, the network management equipment 236 or the network management module 214 of the remote or central monitoring room performs the step S302 to return the data to the origin. Retransmit to (S314).

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, according to the present invention, a remote monitoring and control communication system is constructed using the Internet of the floating IP address environment, and the remotely controlled devices (water supply facilities: pressurized water, drainage, water purification plants, etc. Facility: relay pumping station, sewage treatment plant, etc. Gansang sewage facility: village water supply, sewage sewerage, etc.) It has the advantage of real-time communication using the Internet of floating IP address environment between remote control system and central controller. In addition, according to the present invention, there is an advantage in that a plurality of remote monitoring and control systems can be centrally or distributedly managed using a separate terminal (laptop, personal computer, etc.) using the Internet instead of a central control device. In addition, according to the present invention by using the same Internet communication network video signal and remote control signal has the advantage that can significantly reduce the maintenance cost according to the existing high-speed dedicated line network construction. In addition, according to the present invention can be connected to a remote place anywhere in the country by using the Internet network has the advantage that it is possible to follow-up management of the remote control device installed in the remote place without going to the field.

Claims (4)

A private fixed IP address and a floating IP address table corresponding to the private fixed IP address are automatically or arbitrarily set in the central monitoring room and all components of each remote station, and the floating IP address table is updated in real time or periodically. In the remote control communication system in which the network management equipment, the network management module and the DNS server (DYNAMIC DOMAIN NAME SERVICE SERVER, DDNS SERVER) using the updated information is connected through an internet network, Installed in the central monitoring room and / or at each of the remote locations, the destination IP address of the communication data is changed to a private fixed IP address according to the port number of the communication data received through the Internet network, and retransmitted through the internal network. The remote control unit or the central control unit assigned to the private fixed IP address receives the communication data, and the communication data sent from the remote control unit or the central control unit is received through the internal network, analyzed, and analyzed as a result. If the communication data is communication data corresponding to the central monitoring room and / or each of the remote offices, the destination IP address is changed to the corresponding floating IP address with reference to the floating IP address table, and then retransmitted through the internal network to allow the Internet. Allow communication data to be transmitted to the network, The remote office further includes a video surveillance device installed at the remote office and connected to the network management equipment through a cable to generate video surveillance data for monitoring the state of the remote office and to transmit the video surveillance data to the network management equipment. The network management equipment processes the video surveillance data inputted from the video surveillance apparatus according to a predetermined algorithm and transmits the data to the central surveillance room in real time, and analyzes the communication data received through the internet network to port numbers related to video surveillance processing. In the case of performing the video surveillance apparatus control such as pan / tilt (PAN / TILT) or audio signal processing of the video surveillance apparatus, and if the port number is a port number used by other components in the remote place as described above Characterized in that the processing, The central surveillance room is a video surveillance control apparatus for reproducing the video surveillance data received from the network management equipment according to a predetermined algorithm and storing in the storage device, and transmitting data for controlling the video surveillance value of the remote station if necessary. Network management equipment or network management module for the network management equipment or network management module for the remote monitoring and control system on the Internet of the floating IP environment, characterized in that it further comprises. delete In the communication method of the communication system in which each remote office where the internal network is configured and the central monitoring room where the internal network is configured use the Internet network of the floating IP address environment, (a) A network management device or a network management module is provided in each internal network to transmit / receive a floating IP address and a private fixed IP address of each of the remote offices and the central monitoring room through a DNS server. Generating respective IP address tables; (b) the network management equipment or the network management module of the source receives / analyzes the data transmitted from the component of the source transmitting the data, and if necessary, converts the floating IP address table to a destination address composed of a specific private fixed IP address. Retransmitting to a corresponding destination floating IP address with reference to the Internet network through the internal network; (c) a network management device or a network management module of a remote office or central monitoring room having the destination floating IP address receives / analyzes the data and, if necessary, refers to the received floating IP address by referring to the floating IP address table. Retransmitting through the internal network by changing to a corresponding private fixed IP address; And (d) If the component receiving the data in step (c) returns, the network management equipment or network management module of the remote or central monitoring room having the destination floating IP address performs step (b). , The remote station further includes a video surveillance device, In the step (c), the network management equipment of the remote station receives the data, and analyzes the received data to process the PAN / TILT or the audio signal if the port number is the communication data related to the video surveillance apparatus. Performing control related to the video surveillance apparatus, and if the port number corresponds to another component in the remote location, performing the step (c), remote monitoring using the Internet network of the floating IP address environment. Control system communication method. delete

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