KR101143947B1 - Remote support services system over VSAT , VSAT Through Remote support services system - Google Patents

Abstract

The remote support service system of the ship equipment using the VSAT of the present invention, by improving the existing insufficient information and delayed information through the transmission of information between the ship and the land control center to support the safe and economical operation of the ship in advance It is possible to receive information on the vessel and the equipment in operation at the control center of the land in real time, so that the current accurate situation information about the vessel in operation is safe and secure. It is possible to operate economically, and to be able to take prompt countermeasures for failure information.

Description

Remote support services system of ship equipment using VTS {Remote support services system over VSAT, VSAT Through Remote support services system}

The present invention relates to a remote support service system for ship equipment using a satellite communication method of VSAT (Very Small Aperture Terminal, 'V') method including a VSAT antenna, and more specifically, through VSAT Real-time flight information (location, direction, speed) of the ship, weather information (wind direction, wind speed, humidity, temperature, atmospheric pressure, rainfall) through weather sensor, watcher information (name, job title) and danger information (watcher's drowsiness, fire) Whether it is distressed or not, container cargo information (cargo ship, loading port, unloading port, temperature of refrigerated container) and engine condition information of engine room (cylinder outlet temperature, supercharger rotation speed, exhaust temperature, air cooler air pressure, temperature, fuel) To transmit / receive the status information and alarm information about rack position) and ship navigation equipment (GPS, etc.) with the remote support system in the land control center configured in connection with the ship's onboard system. In addition, it displays the ship information based on the electronic chart and displays the above information, and forecasts the weather information transmitted from the Meteorological Agency or the meteorological company, and the danger situation, the port information, and the corrected route information around the ship through the weather sensor and system provided in each ship. Send and receive information on the ship, and in the event of a ship equipment failure, send and receive between the ship and the remote control center regarding the location and method of repair according to the manual. And it relates to a remote support service system of ship equipment using VTS that can automatically contact the repair company through the SMS service and mail transmission by mobile phone.

In general, although the data transmission is carried out through the INMARSAT (International Marine Satellite Organization) as a method for transmitting data between the ship and the land in the sea, such an communication method of the Inmarsat method has a limited amount of data to be transmitted. It is inconvenient to use because it is impossible to grasp the ship's status information in real time by using mailing method rather than real-time transmission method, and it is inconvenient to use. Inevitably, when a large amount of information is inevitably transmitted, a satellite service is required, resulting in a higher cost burden.
Moreover, only limited information is transmitted to existing information through satellite and other satellites, and there is a problem that the amount of information is too small to judge an emergency situation with the provided information, and thus make a wrong decision, and the weather around the ship in real time. There was a problem that the safety operation of the vessel is threatened because the information on the status and risk situation is not provided.
Therefore, even though it is a wide-band satellite communication method that can accommodate a large amount of data, the flat rate VSAT communication system that can overcome the limitations of communication due to a high communication rate, provides a large amount of information between each ship and a remote control center. By providing a communication environment capable of transmitting and receiving in real time, the ship's status information is transmitted to the remote support system equipped with the on-shore control system through fast and accurate real-time data communication, so that the ship equipment, engine room, cargo, and dangerous conditions can be monitored in real time. It analyzes and provides alarm information about abnormal conditions, related manuals and information on failure parts quickly in case of an error, inducing easy repair on site, and prompt mail and SMS service when repair is required by a maintenance company. Contact your maintenance company with a reminder service Easy to repair in the next marina was possible to build a system that is made.
Inmarsat's data transmission rate is 8 dollars per minute. Even if you use the Internet for one hour a day, it costs about 14 million won per month and transfer speed is only 64Kbps.
In contrast, VSAT is a next-generation ship's ultra-high speed communication satellite system to replace Inmarsok, a synonym for the existing ship communication, which provides land-based high-speed communication speed with maximum transmission speed of 1Mbps and monthly unlimited service to sailors and travelers. They can use various services such as surfing the internet, messenger service and real time broadcasting.
The table below compares tariffs for VSAT, INMARSAT and IRIDIUM.
According to this table, it can be seen that the communication method using the VSAT enables abundant data communication while reducing the communication cost by more than 50% compared to the in-market.

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An object of the present invention is to solve this problem, and based on the above-described VSAT communication method, by transmitting and receiving large-capacity high-quality data information between each ship and the land control center in real time by TCP / IP method of the ship at a remote location. It is to provide a remote support service system for ship equipment using VTS that can support the operation.
VSAT is a satellite transceiver that provides information to subscribers using satellite as a medium. It means a satellite communication base station that uses a very small antenna. The performance of satellites and earth stations has greatly improved with the development of satellite communication technology. As the frequency of GHZ) is used, it is possible to use a small antenna to communicate smoothly. It has been used in areas or environments where the ground network is unavailable, or as a backup system in case of terrestrial communication failure due to communication failure or natural disaster. .
The remote support service system of ship equipment using VTS of the present invention enables the real-time ship status monitoring based on the electronic chart by using the VSAT, and various weather information such as typhoons, air pressure valleys, wind direction, and wind speed around the ship. By providing the control center in real time, it will support the safe operation of the ship.
Still another object of the present invention is to enable remote support for equipment in a ship, and the ship's flight manager can respond appropriately to emergency situations (fire, hijacking, and extreme weather) through remote support for equipment in a ship. It is possible to cope with the danger situation by providing weather information on the flight route from the land control center, and monitor the status of the ship in real time in the land control center, It is to provide a remote support service system for ship equipment using VTS capable of providing a countermeasure.

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The above problems, in the ship status transmission module for transmitting the ship status information to the data receiving and analysis module of the remote support system through the VSAT (Very Small Aperture Terminal) installed on the ship in the status information processing module of the remote support system An in-ship system having a VSAT satellite communication transmitter / receiver configured to receive data transmitted by the data transmission module and perform alarm signal processing by the processed data; And a data reception and analysis module for receiving and analyzing data transmitted from the ship status transmission module of the VSAT satellite communication transmission / reception unit and including a remote support server, and a data transmission module for transmitting data to the data reception and alarm processing module. A data processing and transmitting / receiving unit configured to process information received from the data receiving and analyzing module and data received from the meteorological information processing unit, and a state information processing module to transmit the processed data to the data transmitting module; Receives and processes the weather information for each route and the remote support data processing unit consisting of a DB server that stores and manages the data processed by the status information processing module, the electronic chart processing unit, the ship management function unit, and other setting function units. Weather information processing unit having a route information processing and display unit for transmitting to the processing module, port display function, Electronic chart processing unit that performs and manages port information display function, GRID display function, national name display function, ship information management function, ship information display function, ship equipment management function, and route information display function. And remote support service system of ship equipment using VTS, characterized in that it comprises a remote support system having an alarm information setting, manual server setting, other setting function for performing the equipment setting function,
The state information processing module 31 starting signal analysis; Determining, by the state information processing module, whether the internal humidity signal for the ship equipment is in a normal range;
Determining whether a power input signal is in an ON state when the internal humidity signal is in a normal range; Determining whether the internal temperature signal of the equipment is in the abnormal state range if the power input signal state is in the ON state; Determining whether the LAN SIGNAL signal enters a normal range when the internal temperature signal is not within an abnormal range; Determining whether a CHECKSUM signal is in an abnormal state range when it is determined that the signal enters a normal range state; If the CHECKSUM signal is not within the range of the abnormal state, expressing it as a normal signal in the ship information display function 134 of the ship management function; In the step of determining, the internal humidity signal is abnormal range, or the power input signal state is not in the ON state range, or the internal temperature state signal is in the abnormal state range, or the LAN SIGNAL signal is in the normal state range If it does not come in, or if the CHECKSUM signal is in the abnormal state range step represented by the abnormal signal in the ship information display function of the ship management function; The signal analysis method comprising the step of transmitting the signal represented by the abnormal signal in the data transmission module of the in-vehicle system and the alarm processing module as an error signal from the data transmission module through the VSAT It is solved by the remote support service method.

The remote support service system of the vessel equipment using the V according to the present invention, through the real-time information transmission and reception between the vessel and the land control center to improve the lack and delay of existing information and to perform the support for the safe and economical operation of the vessel As a result, it is possible to prevent accidents in advance and to receive real-time information on the status and equipment of the vessel in operation at the control center of the land, thus supporting safe and economical operation and providing trouble information. A quick response to the problem will also be effective.

1 is a block diagram of a remote support service system of ship equipment using the V of the present invention
2 is a device interlocking flowchart of a ship system and a land remote support system according to an embodiment of the present invention;
3 is a normal, abnormal check flowchart of the system equipment in ships according to an embodiment of the present invention
Figure 4 is a block diagram of the configuration of the main function of the remote support system according to an embodiment of the present invention
5 is a relationship diagram of a database table of a remote support system for equipment information and status information according to an embodiment of the present invention.
6 is a view showing a main screen of the remote support system according to an embodiment of the present invention.

In order to achieve the above object, the remote support system (A) of ship equipment using the V of the present invention, as well as the basic information and real-time position, orientation, speed information of the ship as well as the current state and abnormal state of the ship equipment By receiving the real-time status information through the VSAT on the screen of each functional unit of the remote support system (C) provided in the control center of the land, to quickly grasp the ship's status information, and to deal with any problems in the ship It is possible to provide location information service support and up-to-date manual service to the equipment A / S company on the nearest land from the ship's location.
Hereinafter, a method of supporting real-time information monitoring and maintenance of a ship through VSAT according to an embodiment of the present invention will be described with reference to the accompanying drawings. However, the illustrated drawings and the following descriptions are merely exemplary embodiments of the present invention, and various modifications and changes may be made without departing from the gist of the present invention.
1 is a block diagram of a remote support service system of ship equipment using VTS as an embodiment of the present invention.
According to the embodiment, the remote support service system (A) of the ship equipment using the V,
Located in the ship, the collected ship status information is received and analyzed in the data processing and transmission / reception unit (2) provided in the remote control system (C) of the land control center through the VSAT installed in the ship and onshore control centers. Receives the data transmitted by the data transmission module 22 and the ship status transmission module 11 for transmitting to the module 21 and the data processed by the status information processing module 31 of the remote support system (C) An in-ship system (B) having a VSAT satellite communication transceiver 1 comprising a data receiving and alarm processing module 12 for performing alarm processing; and
Located in the control center of the land, the data reception and analysis module 21 and the state information processing module for receiving and analyzing the data transmitted from the ship state transmission module 11 of the VSAT satellite communication transmission and reception unit 1 ( A data processing and transmitting / receiving unit (2) comprising a data transmission module (22) for receiving the data processed in (31) and transmitting data to the data receiving and alarm processing module (12); A state information processing module 31 for processing the data transmitted from 21 and the data received from the meteorological information processing unit 4, and transmitting the processed data to the data transmission module 22 and the DB server 32; To the DB server 32 which stores and manages the data processed by the state information processing module 31 and the data of the electronic chart processing unit 5, the ship management function unit 6, and other setting function unit 7. Remote support data processing section 3 and the weather information for each route Weather information processing section 4 having a route information and display unit 41 for receiving and processing and transmitting and displaying to the state information processing module 31, port display function, port information display function, GRID display function, Electronic chart processing unit (5) to perform and manage the country name display function, ship information management function, ship information display function, ship equipment management function, route management function (6) to perform the route information display function, alarm information setting, manual And a remote support system (C) having a miscellaneous setting function unit (7) that performs server setting and equipment setting functions.
For example, when the signal of the GPS equipment which is the equipment in the ship is not output, the ship state transmission module 11 with the signal non-output alarm in the data receiving and analysis module 21 of the remote support system (C) described above. Transmit signal non-output information, the cause of the information is analyzed in the data receiving and analysis module 21 and the status information processing module 31, the information on the repair and action for the GPS equipment obtained as a result of the analysis is the data The transmission module 22 is transmitted to the onboard system B, and this information is finally provided to the flight manager.
The VSAT satellite communication transmitting and receiving unit 1 is a ship system system (B) set in the ship, the ship state transmission module 11 for transmitting the equipment status data of the ship to the remote support system (C) using the VSAT, Data reception and alarm processing module 12 for receiving data from the data transmission module 22 provided in the remote support system (C) for receiving and processing the transmitted data, and displaying an alarm using the received data. Is made of.
The data processing unit and the transmitting / receiving unit 2 are provided in a remote support system (C) provided in a control center on land, and are provided with a remote support server that performs networking with the inboard system (B) and other vessels, and Data reception and analysis module 21 for decrypting and branching the encrypted data transmitted from the VSAT satellite communication transmission and reception unit 1 set in the internal system B and the status information processing of the remote support data processing unit 3. It consists of a data transmission module 22 for transmitting the data transmitted from the module 31 back to the VSAT satellite communication transceiver 1 of the ship.
The remote support data processing unit (3) is set in the remote support system (C) and analyzes the data according to the equipment status, performs error processing on the result, and processes status information for alarm processing for weather information and route information. The module 31, the electronic chart processing unit 5, the ship management function unit 6, and the other setting function unit 7 is a DB server 32 is stored and managed.
The meteorological information processing unit 4 includes weather information processing and display unit 41 for each route that receives and processes weather information for each route of the corresponding ship, and transmits the processed data to the state information processing module 31.
The meteorological information processing unit 4, the electronic chart processing unit 5, the ship management function unit 6, and other setting function unit 7 is a weather information display function 120, the electronic chart display function 120 shown in FIG. , Ship management function 130, and other setting function (140).
Figure 2 is a remote interlocking flowchart of the equipment of the onboard system (B) and the remote support system (C) equipment of the land control center through the VSAT of an embodiment of the present invention.
That is, the step (S1) of operating the remote support system (C), the step of executing the remote support S / W installed in the data processing and transmission and reception unit (2) of the system (S11), the initial values are set In step S12, the environment setting memory in Config.ini of the DB server 32 is stored, and the weather information processing unit 4 checks the latest weather information and stores it on the internal memory of the weather information processing unit 4 ( S13), the database is initialized by the state information processing module 31, the database of the DB server 32 is initialized to prepare to store information (S14), the data receiving and analysis module 21 for data processing for remote support And a step (S15) in which the remote support server (not shown) provided in the transceiver unit 2 attempts to connect (S15), and the data processing and analysis module 21 determines whether the server connection connector is connected ( S16), Reconnect if the connector is not connected At step S161, when the connector is connected in step S16, the data reception and analysis module 21 turns on the power of the ship equipment (S17), and the information received from the ship state transmission module 31 is The state information processing module 31, which is processed by the data receiving and analyzing module 21 and receives the processed data, determines whether there is an equipment abnormal signal among the signals input from the equipment (S18). In the ship information display function 134, the step of displaying the information on the equipment abnormal state on the screen (S19), if there is no error is made of the step of displaying information on the screen on the screen (S20).
The remote support service system (A) of the ship equipment using VTS according to the present invention is a communication method using a VSAT satellite antenna and communicates by TCP / IP method and the remote support server and client set in the remote support system (C) It is composed of internal system (B), connected to the network through satellite communication, and uses a server having a static IP (Global Static IP).
The remote support service system (A) of the ship equipment using the V according to the present invention after confirming the power supply and communication status of the remote support system (C) and the communication status of the ship equipment and VSAT modem of the in-vehicle system (B) If the above items are in a normal state, the equipment information of the ship is received without abnormality and displayed on the remote support system (C) of the land, and if there is an error, an alarm signal according to the abnormal state is transmitted to the in-ship system (B).
Figure 3 is a flowchart for checking the normal and abnormal signals by performing a signal analysis process for each equipment performed before the monitoring of the ship equipment information in the remote support system (C) according to an embodiment of the present invention, Normal and abnormal signals for internal humidity, power status, internal temperature, LAN SIGNAL and CHECKSUM are digital for the normal and abnormal ranges of humidity, voltage / current, temperature, signal value and calculation result value according to the characteristics of each equipment. The value is set in advance in the DB server 32, the check progress step is also input to the state information processing module 31 as a program in advance. That is, when data is transmitted from the ship state transmission module 11 of the inboard system B to the onshore remote support system C via VSAT, the state information processing module 31 of the remote support system C performs signal analysis. Starting (S2), determining whether the internal humidity signal for the ship equipment is in the normal range (S21); Determining whether the power input signal is in the ON state when the internal humidity signal is in the normal range (S22); Determining whether the internal temperature signal of the equipment is in the abnormal state range when the power input signal state is in the ON state (S23); Determining whether the LAN SIGNAL signal enters a normal range when the internal temperature signal is not within an abnormal range (S24); Determining whether the CHECKSUM signal is in an abnormal state range when it is determined that the LAN SIGNAL signal enters a normal range state (S25); If the CHECKSUM signal is not within the range of the abnormal state, expressing it as a normal signal in the ship information display function 134 of the ship management function 6 (S26); In steps S21, S22, S23, S24 and S25, the internal humidity signal is in an abnormal range, or the power input signal state is not in an ON range, or the internal temperature state signal is in an abnormal state range. If the LAN SIGNAL signal does not enter the normal state range, or if the CHECKSUM signal is the abnormal state range (S27) represented by the abnormal signal in the ship information display function 134 of the ship management function (6); The signal for each device through the data receiving and alarm processing module 12 of the in-vehicle system B as an error signal from the data transmission module 22 via the VSAT and the signal represented by the abnormal signal (S28). Perform analysis and feed back. The signal analysis sequence program for each device can be modified to suit the site situation.
4 is a configuration of main functions of the meteorological information processing unit 4, the electronic chart processing unit 5, the ship management function unit 6, and other setting function unit 7 of the remote support system C as an embodiment of the present invention. Is a block diagram showing the following. The electronic chart display function 110 of the electronic chart processor 5 includes a port display, port information, GRID information, and a country name display. The meteorological information display function 120 of the meteorological information processing unit 4 is composed of a display function for typhoons, air pressure valleys, wind direction / wind speed. The ship management function 130 of the ship management function 6 is composed of a ship information management function, ship information display function, ship equipment management function, route information display function. The miscellaneous setting function 140 of the miscellaneous setting function unit 7 includes alarm information setting (E-MAIL, SMS), manual server setting, and equipment setting function.
In the ship management function 130, the ship information management function 131, IMO Number, ship name, call name, nationality name, shipping company name, port number, ship type, satellite communication IP, a function of setting the ship equipment management function 132 consists of new equipment input, equipment parts replacement notification, parts replacement application / management, manual registration / modification / deletion, step-by-step inspection status setting, remote equipment inspection function, and route information display function 133 is for displaying route information. The ship information display function 134 consists of a real time vessel information display, ship equipment status information display, ship engine room information display, cargo status display function.
The remote service system (A) of the ship maintenance using the V of the present invention can be displayed electronically, express the position and status information of all communicable vessels in real time, and manage the vessel information (ship basic information, equipment Information, route information) and other settings.
5 shows a relationship diagram of the DB server 32 for the mission equipment information and the status information of the remote support system C as an embodiment of the present invention, and is usefully used when maintaining the equipment as a support system module. Can be.
As a table constituting the DB server 32, the BRIDGE SYSTEM table 200 includes ID, SYSTEM name, model, manufacturer, warranty period, installation date, A / S company, person in charge, photo, manual, It consists of an alarm and an alarm cycle, and the MAKER table 210 for the manufacturer is composed of ID, manufacturer, country, address, phone number, email, office address, and mobile communication number, and the ASCOMPANY table 220 is for AS company. ID, A / S company name, country, address, email, office address, mobile communication number, OFFICER table 230 is composed of ID, office name, address, telephone number, email address, mobile communication number. The PARTLIST table 240 is composed of an ID and a part ID, and the PART table 241 connected to the PARTLIST table 240 is composed of an ID, a part name, a manufacturer, a production date, an alarm, and an alarm cycle.
In addition, the INSTALL MANUAL 250, the INSTRUCT MANUAL 260, and the SERVICE MANUAL table 270 are composed of ID, manual name, issue date, version, and size, respectively.
The relation diagram of the DB server 32 is a ship organically linked to the manufacturer information, information on the maintenance company, information on the parts for the equipment, installation manual, operation manual, service manual information used during maintenance The equipment information is displayed and managed. For example, if you look at the manufacturer block, ID, manufacturer name, country, address, phone number, email, administrator, mobile number is displayed.
6 is a view showing the main screen 300 of the remote support system (C) as an embodiment of the present invention, the information obtained by the implementation procedure of Figs. It is displayed in real time, and can inform the ship of the location and condition of the fault according to the identified state, and also provides a manual for the relevant part to support safe navigation. On the screen, the equipment status display screen 310 is composed of ECDIS, GPS, RADAR, GYRO COMPASS, SPEED LOG power, system, signal status display screen, weather information display selection screen 320 in the air pressure, wind direction, typhoon The electronic screen display screen 330 includes a screen for displaying a chart corresponding to an area to be operated.

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A. Remote support service system of ship equipment using VTS
B. Onboard system C. Remote support system (land control center)
1. VSAT satellite communication transmitter and receiver 11. Vessel status transmission module
12. Data receiving and alarm processing module 2. Server data processing and sending / receiving unit
21. Data Processing and Analysis Module 22. Data Transmission Module
3. Remote support data processing unit 31. Status information processing module
32. DB Server 4. Weather Information Processing Unit
41. Weather information processing and display unit for each route 5. Electronic chart processing unit
6. Ship management function 7. Other setting function
100. Display, setting, management function of remote support system
110. Electronic chart display function 120. Weather information display function
130. Ship management function 131. Ship information management function
132. Ship equipment management function 133. Route information display function
134. Vessel Information Display Function 140. Other Setting Function
200. Bridge system table 210. Maker table 220. AScompany table 230. Officer table
240. Parts list table
241. Parts table 250. Installation manual table
260. Instruction Manual Table 270. Service Manual Table
300. Remote Support Service System Main Screen 310. Equipment Status Display Screen
320. Weather information display selection screen 330. Electronic chart display screen

Claims (2)

In the remote support service system of ship equipment consisting of an onboard system (B) installed in a ship and a remote support system (C) installed at a remote control center, the remote support service system (A) of ship equipment using VT is ,
Ship status transmission module 11 and the remote support system (C) for transmitting the ship status information to the data receiving and analysis module 21 of the remote support system (C) through the VSAT (Very Small Aperture Terminal) installed on the ship VSAT satellite communication transmission consisting of a data receiving and alarm processing module 12 for receiving the data processed by the state information processing module 31 of the data transmission module 22 to perform the alarm signal processing. An in-ship system (B) having a receiver (1); And
Receives and analyzes the data transmitted from the ship state transmission module 11 of the VSAT satellite communication transmission and reception unit 1, and a data reception and analysis module 21 having a remote support server and the data reception and alarm processing module. A data processing and transmitting / receiving unit (2) comprising a data transmission module (22) for transmitting data to (12), information transmitted from the data receiving and analysis module (21) and received from the weather information processing unit (4). Processing the data, and transmitting the processed data to the data transmission module 22, the state information processing module 31, the data processed by the state information processing module 31, the electronic chart processor 5, the ship A remote support data processing unit 3 comprising a management function unit 6, a DB server 32 for storing and managing data of the other setting function unit 7, and a state information processing module by receiving and processing weather information for each route. Route-specific information processing and display to 31 Weather information processing unit (4) having two parts, port display function, port information display function, GRID display function, electronic chart processing unit (5) for performing and managing the country name display function, ship information management function, ship information display function , A remote management system (C) comprising a ship management function (6) for carrying out ship equipment management, a route information display function, and other setting functions (7) for performing alarm information setting, manual server setting, and equipment setting function (C). Remote support service system of the ship equipment using the V, characterized in that it comprises a).
In the remote support service method of the ship equipment using VTS, the output signal analysis method of the ship equipment, the data reception of the remote support system (C) via the VSAT from the ship state transmission module 11, which is the in-vehicle system (B) And when the status information data is received by the analysis module 21 receives the received status information,
Starting signal analysis by the state information processing module 31 (S2);
Determining, by the state information processing module 31, whether the internal humidity signal for the ship equipment is in a normal range (S21);
Determining whether the power input signal is in the ON state when the internal humidity signal is in the normal range (S22);
Determining whether the internal temperature signal of the equipment is in the abnormal state range when the power input signal state is in the ON state (S23);
Determining whether the LAN SIGNAL signal enters a normal range when the internal temperature signal is not within an abnormal range (S24);
Determining whether the CHECKSUM signal is in an abnormal state range when it is determined that the LAN SIGNAL signal enters a normal range state (S25);
If the CHECKSUM signal is not within the range of an abnormal state, expressing it as a normal signal in the ship information display function 134 of the ship management function unit 6 (S26);
In the step of determining, the internal humidity signal is abnormal range, or the power input signal state is not in the ON state range, or the internal temperature state signal is in the abnormal state range, or the LAN SIGNAL signal is in the normal state range If it is not entered or the CHECKSUM signal is in the abnormal state range step (S27) represented by the abnormal signal in the ship information display function 134 of the ship management function (6); V, characterized in that it comprises the step (S28) of receiving the data and the alarm processing module 12 of the in-vehicle system (B) as an error signal from the data transmission module 22 through the VSAT. Remote support service method of ship equipment using SMT

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