KR20120111228A - Data transmission method and system of ship and land using satellite communications - Google Patents

Abstract

PURPOSE: A data transmission method and system thereof are provided to prevent a ground system from overlappingly transmitting data to a ship system. CONSTITUTION: A ship system unit(20) transmits the collected ship data to a ground using satellite communication. The ship system unit receives the ground data from the ground using the satellite communication. A ground system unit(40) transmits the collected ground data to the ship system unit using the satellite communication. The ground system unit receives the ship data from the ship system using the satellite communication. A satellite system unit(30) connects to the wireless communication using a medium between the ship system unit and the ground system unit. [Reference numerals] (20) Ship system unit; (21) First system in a ship; (22) Second system in a ship; (23) Third system in a ship; (30) Satellite system unit; (40) Ground system unit; (41) First ground system; (42) Second ground system; (43) Third ground system; (50) Ship sensing apparatus; (60) Ground sensing apparatus

Description

Method for transmitting data between ship and land using satellite and its system {DATA TRANSMISSION METHOD AND SYSTEM OF SHIP AND LAND USING SATELLITE COMMUNICATIONS}

The present invention relates to a data transmission method and a data transmission system between systems, and more particularly, to a data transmission method and a system between a ship system and a land system using a satellite.

Ships collect a variety of information while sailing to exchange information with land systems. For example, the marine environment information (wave, wave, wind direction, wind speed, air pressure, etc.) of the surrounding sea, the state information of the main system inside the ship, the position information of the ship, shipping information, etc. are exchanged with each other.

The communication between the ship and the land system can be made through a satellite. For this purpose, the ship is provided with equipment or software program for satellite communication.

In general, satellite communication is slow and expensive. Therefore, in developing communication systems and communication software applied to satellite communication, efforts are being made to minimize data transmission amount, simplify communication route, or shorten data transmission time. In particular, since the same data is repeatedly transmitted in a plurality of systems on a ship or a land, it is a waste of unnecessary radio waves. Therefore, a ship and a land system are searching for a data transmission method for preventing such data from being duplicated.

However, since ships or land systems have existing systems that are built for the application of equipment or software for satellite communications, there is a need to minimize and minimize the cost of additional system equipment to prevent redundant transmission of data to existing systems. There is. Therefore, it is necessary to develop a data server configuration and data transmission method for preventing the duplication of data transmission between ship and land while maximizing the existing system.

Embodiments of the present invention provide a method and a system for preventing redundant transmission of data transmitted from a ship to a land system or from a land system to a ship while utilizing an existing data transmission system between a ship and a land using a satellite. .

In addition, the present invention provides a data transmission method and system for transmitting data through an efficient data transmission route to reduce communication costs or to cope with an abnormal situation of some or all of the data servers included in a ship or land system. I would like to.

According to an aspect of the present invention, in a ship-to-shore data transmission system using satellites, the collected ship data is transmitted to the land using satellite communication, or land data is received from the land using the satellite communication. A ship system unit; A land system unit configured to transmit the collected land data to the ship using the satellite communication or to receive the ship data from the ship using the satellite communication; And a satellite system unit for connecting the satellite communication between the ship system unit and the land system unit, wherein the ship system unit and the land system unit include: an information collection unit for collecting predetermined data; And a plurality of subsystems including a data storage to store and a data transceiver to transmit and receive data to and from the satellite through the satellite system by executing satellite operator transmission software provided by the satellite system. And a first sub-system for detecting and transmitting a state of each of the plurality of sub-systems provided in the unit and selecting a first sub-system which transmits and receives predetermined data through the satellite system unit. Inter-land data transmission system It is provided.

In addition, each of the plurality of sub-systems may detect a state of the plurality of sub-systems mutually to detect a normally operable sub-system, and the first sub-sub which transmits and receives predetermined data to the satellite among the normally-operable sub-systems. It may include a detection and control module for selecting a system.

The detection and control module may select the first subsystem by comparing an IP address size among the normally operable subsystems.

The detection and control module included in the second subsystem except the first subsystem among the normally operable subsystems may deactivate the transmission function of the data transmitter included in the corresponding subsystem.

In addition, the subsystem in normal operation may be a subsystem except for a subsystem in which all or some components of the subsystem do not operate or an error occurs among the plurality of subsystems. .

The satellite system unit may include a satellite operator server, a ship satellite antenna for relaying data transmission between the ship system unit and the satellite, and a land satellite antenna for relaying data transmission between the satellite and the land system unit.

The ship system unit or the land system unit may further include a data processor configured to process the information by outputting the ship data or the land data stored in the data storage unit.

The ship data may be information collected from the ship as data corresponding to at least one of ship navigation related information, ship surrounding information, state information of a ship internal system, and baggage information loaded on a ship.

The land data is data of any one or more of operator information related to the satellite operator or a ship company, ship related information of another ship company, and ship related information, and may be information collected from the land.

According to another aspect of the present invention, a ship system unit for transmitting ship data or receiving land data using satellite communication; A land system unit which transmits the land data or receives the ship data using the satellite communication; And a satellite system unit for connecting the satellite communication between the ship system and the system unit, wherein the ship system unit and the land system unit include an information collection unit for collecting predetermined data and storing predetermined data. A data transmission method comprising a plurality of subsystems including a data storage unit and a data transceiver for transmitting and receiving data to and from a satellite through the satellite system unit by executing satellite operator transmission software provided by the satellite system unit. A method comprising: a) detecting an operating state of each of the plurality of subsystems and extracting a normally operable subsystem; b) when there is one normally operating subsystem, the subsystem operating in an active mode for transmitting and receiving data to and from the satellite through the satellite system unit; c) When there are a plurality of normally operable subsystems and one active mode subsystem operating in the active mode, the first subsystem except for the active mode subsystem in the normally operable subsystem is configured to transmit the data transmission unit. Operating in a slave mode deactivating a function; d) when there are a plurality of normally operable subsystems and there are a plurality of active mode subsystems, only one of the plurality of activated mode systems operates in an active mode, and the other subsystems operate in a slave mode; Provided is a method of transmitting data between a ship and a land using a satellite.

In addition, each of the plurality of subsystems includes a detection and control module for detecting a state of the subsystem, the step a), the detection and control module, the whole or part of the subsystem among the plurality of subsystems; Subsystems can be extracted except for those that do not work or have errors.

In step d), when there are a plurality of active mode subsystems, the IP address sizes of the active mode subsystems are compared, and the subsystem having the minimum IP address size operates in the active mode, and the other subsystems are slaves. And operating in a mode.

Embodiments of the present invention can prevent data overlapping transmission between a ship and a land system that transmits and receives data using satellite communication, thereby reducing communication costs.

In addition, according to embodiments of the present invention, even under abnormal conditions of some systems or some data servers of a ship or a land system, various collected information can be smoothly transmitted without waste of propagation.

1 is a block diagram showing the configuration of a data transmission system between a ship and a land using a satellite according to an embodiment of the present invention.
2 is a block diagram showing a detailed configuration of the ship system unit 20 and the land system unit 40 in the data transmission system shown in FIG.
3 to 5 are block diagrams illustrating a data transmission flow in an abnormal situation of a data transmission system according to an embodiment of the present invention.
6 is a flowchart illustrating a method of selecting a ship system unit or a land system unit that executes data transmission in a data transmission system according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In addition, in the various embodiments, components having the same configuration will be representatively described in the first embodiment using the same reference numerals, and in other embodiments, only the configuration different from the first embodiment will be described.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

The "data server" described in this embodiment includes a server capable of collecting various related information in a ship or land network system and storing it in an accessible data storage or reading necessary information from the data storage. In the present invention, each ship or land system may include at least one data server.

In the present embodiment, the "satellite service server" includes a server built by an operator that mediates the exchange of information between a ship and a land.

In this embodiment, "satellite" includes satellites that are specifically used for maritime communication purposes.

The "satellite transmission software" described in this embodiment delivers information files stored in a ship or land system to a satellite operator server via a satellite, and downloads the information stored from the satellite operator's server to a data storage unit in another system. Includes application software designed to save.

"Ship data" described in this embodiment is all the data that can be collected by the ship side in relation to the operation of the vessel, such as ship navigation related information, ship surrounding information, the status information of the internal system of the ship, baggage information loaded on the ship Include.

In addition, "land data" includes all data that can be obtained onshore as information that can not be obtained from the vessel, such as carrier-related information, such as ship companies, satellite operators related to ship navigation, ship-related information of other companies.

1 is a block diagram showing the configuration of a data transmission system between a ship and a land using a satellite according to an embodiment of the present invention.

Referring to FIG. 1, the data transmission system of the present invention includes a ship system unit 20 configured in a ship, a land system unit 40 which is a network system of a land, and a ship system unit 20 and a land via a satellite 10. The satellite system unit 30 and the satellite 10 are processed to exchange information between the system unit 40.

The ship system unit 20 is connected to the ship detection device 50 provided in the ship to sense various information when the ship sails, and transmits the detected information to each system of the ship system unit 20. The ship sensing device 50 is not particularly limited, and ship data, in particular, ship-related information such as position, speed, direction, direction, weather, and navigation information for ship navigation, ship state information such as engine status, fuel status, And a plurality of detection means capable of detecting baggage information loaded on the ship, fire or disaster related information about the ship, and the like. Therefore, the ship detecting device 50 includes a means for measuring all information necessary for the operation of the ship, such as a GPS device, a speed measuring device, a wind direction measuring device, a weather observation device, a fire monitoring device attached to the ship, The specification of the sensing means will be omitted.

Information detected from the ship sensing device 50 may be all delivered to each of the subsystems included in the ship system unit 20. That is, in FIG. 1, the ship system unit 20 includes ship sub-systems such as a ship first system 21, a ship second system 22, and a ship third system 23. All information detected by the ship sensing device 50 is delivered. Since the ship system unit 20 implements a multiplexing system for the stability of information exchange between the ship and the land, it is possible to construct an appropriate number of ship sub-systems according to the ship size, the sailing time, the importance of the information, and the like. The ship subsystems are connected to enable mutual wireless or wired communication. The ship subsystems may include at least one or more data servers for data transmission, but preferably, one data server may be included in one sub ship subsystem.

Each of the ship subsystems may detect an abnormal situation, that is, a situation in which a normal function is not performed due to a failure or a partial error, or detect an operation mode of an active or standby mode of the system. Detailed configuration of the ship sub-system will be described in FIG.

The satellite system unit 30 is a means for mediating data transmission between the satellite 10 and a ship or a land system. Although not shown in FIG. 1, a satellite antenna server, a ship antenna for transmitting and receiving data from the ship system unit 20, or It may include a satellite communication terminal, a land antenna or a satellite communication terminal for transmitting and receiving data from the land system unit 40. The satellite operator server may be a server operated by a ship company or a server operated by a mail service provider, and may be hardware that processes data transmitted through an antenna or a satellite communication terminal of a ship or a land according to a specification of satellite communication. And software.

Meanwhile, the land system unit 40 may exchange data with the ship system unit 20 through the satellite 10 via the satellite system unit 30. The land system unit 40 is composed of a plurality of land subsystems, and as shown in FIG. 1, the land system unit 40 may include a land first system 41, a land second system 42, and a land third system 43. . Similarly, since the land system 40 implements a multiplexing system for the stability of information exchange between the ship and the land, an appropriate number of land subsystems may be constructed according to the stability of the land network and the importance of information. The land subsystems are connected to enable mutual wireless or wired communication.

Detailed configuration of the land subsystems will be described with reference to FIG. 2.

The land system unit 40 receives the land data obtained from the land sensing device 60. That is, all land subsystems included in the land system unit 40 receive land data obtained from the land sensing device 60.

The land detection device 60 collectively refers to a means for collecting or detecting information, and in particular, a means for collecting information necessary for voyage of a ship delivered from a server of a ship company, a means for acquiring information related to a ship navigation destination, and a ship navigation waypoint Means for receiving information that can be obtained onshore, such as information, environmental information near a ship route, transport information of another ship company, and the like, but are not necessarily limited thereto.

FIG. 2 shows a detailed configuration of the ship system 20 and the land system 40 in the data transmission system shown in FIG. That is, the detailed structure of the ship 1st system 21 and the ship 2nd system 22 of the ship system part 20, and the land 1st system 41 and the land 2nd system 42 of the land system part 40 ) Is shown in detail. 2 illustrates only two subsystems as subsystems, but is not limited thereto.

In FIG. 2, the ship first system 21, the ship second system 22, the land first system 41, and the land second system 42 are information collection units 211, 221, 411, 421, and data storage units 213, 223, 413, 423, respectively. , And data transmission / reception units 214, 224, 414, and 424.

The information collection units 211, 221, 411, and 421 receive vessel or land related information sensed or collected from a sensing device outside the system, and transmit the information to the data storage units 213, 223, 413, and 423.

The information collectors 211, 221, 411, 421 include detection and control modules 212, 222, 412, 422, and the detection and control module 212, 222, 412, 422 detects system states between subsystems and prioritizes operations among a plurality of subsystems according to the subsystem detection information. Determine the rank to set the operation mode of the subsystem. The sub-system selected under the control of the detection and control module 212, 222, 412, 422 transmits or receives information collected from the ship or land system by satellite communication. In the embodiment of FIG. 2, the detection and control modules 212, 222, 412, 422 are configured as one means, but are not necessarily limited thereto, and the detection module and the operation of each subsystem are checked to check the operating state, failure or error of each subsystem. It can be configured separately into a control module that determines the priority and controls the operation of the overall system.

The data storage unit 213, 223, 413, 423 is connected between the information collecting units 211, 221, 411, 421 and the data transmitting and receiving units 214, 224, 414, 424 and periodically receives and stores data from the information collecting units 211, 221, 411, 421. In addition, ship or land system data transmitted through the satellite 10 and the satellite system unit 30 is also received and stored through the data transmission and reception unit (214, 224, 414, 424).

Data received and stored from the information collecting units 211, 221, 411, and 421 are output from the data storage units 213, 223, 413, and 423 when the corresponding sub system is controlled in the active mode, and transmitted to the satellite system unit through the data transmitting / receiving units 214, 224, 414, 424. On the other hand, the data received by the data transmission and reception unit (214, 224, 414, 424) by satellite communication is stored in the data storage unit (213, 223, 413, 423) and stored in the data storage unit (213, 223, 413, 423) and the information is processed if necessary. Although the data processing module for extracting and processing information from the data storage units 213, 223, 413, and 423 is not illustrated in FIG. 2, the data processing module may be configured to be included in the information collection unit or separately.

The data transmission / reception unit 214, 224, 414, 424 is an information transmission means that enables data exchange between ships or lands using satellite operator transmission software that downloads and executes a program from the satellite operator server or the satellite system unit 30. In the past, since the ship system unit 20 or the land system unit 40 exchanged information through satellite communication using one satellite operator transmission software, the ship system unit 20 or the land system unit 40 exchanged information. Even if a multiplexed data server is built for security or system stabilization, a problem with the satellite operator's transmission software may cause serious consequences that the entire system cannot operate. Therefore, according to an embodiment of the present invention, the data transmission / reception unit 214, 224, 414, 424 is executed in the plurality of sub-system of the ship system unit 20 or the land system unit 40 running the satellite operator transmission software. Therefore, even if an error occurs in the satellite operator transmission software of a specific data transmission / reception unit or a problem occurs in a specific one of a plurality of sub-systems, the data transmission / reception unit of the other sub-systems transmits without interruption in exchange of stored information by satellite communication. Can be received or received, allowing the data transmission system to operate reliably.

3 to 5 are block diagrams illustrating a data transmission flow when a failure or an abnormal situation occurs in a specific configuration of a data transmission system according to an exemplary embodiment illustrated in FIG. 2.

When the ship system unit 20 is composed of two ship subsystems, namely, the ship first system 21 and the ship second system 22, the detection and control modules 212 and 222 of the information collection unit in each ship subsystem. ) Detect the operation of the opponent ship subsystem. Detection and control modules 212 and 222 detect errors or failures of components as well as operational mode states of other ship subsystems. That is, the detection and control module 212 of the first ship system 21 and the detection and control module 222 of the second ship system 22 communicate with each other while the operation mode of the sub-system of the opponent is active mode. Detect in real time whether it is in slave mode or idle mode that does not operate due to an error or failure.

In this case, the active mode is a mode in which all components included in the ship sub-system operate, and the ship sub-system which is an active mode among the plurality of ship sub-systems operates as the main to transmit information collected from the ship to the land system. Conversely, information conveyed via satellite communication from the land system is received at the ship's subsystem in active mode as the main.

In addition, the slave mode is a mode in which all the components included in the ship subsystem do not operate. In particular, the data transmission / reception unit in which the satellite transmission software is executed does not operate or is in a standby state. Therefore, the slave subsystem in slave mode can receive and store the information collected from the ship sensing device due to the operation of the information collector and the data storage, but cannot exchange information with the land system. This is to control the subsystem in order to prevent unnecessary data redundant transmission.

On the other hand, when any one of the plurality of ship sub-system is a failure or the operation of some components in the ship sub-system abnormal state can be detected in the idle mode in which the ship sub-system does not operate. Under the idle mode, data collection, transmission, storage, and the like cannot be performed until a faulty or broken part is rectified to a normal state.

3 illustrates a case where an error occurs in the data transmission / reception unit 224 of the second system 22 of the ship system unit 20.

Accordingly, the detection and control module 212 of the ship first system 21, which was detecting the ship second system 22 through information exchange with the detection and control module 222 of the ship second system 22, may The operation mode of the ship 1st system 21 which is the said ship sub-system which it belongs to is set to an active mode. In the embodiment of FIG. 3, since each system unit is configured to have only two subsystems, when the other subsystem is in an error state, the remaining subsystems are automatically set to the active mode. However, unlike the case of FIG. Including a plurality of sub-systems detected as being error-free, it is necessary to select a subsystem to operate in an active mode in a predetermined prioritization method. An example of a specific method of selecting an operation mode in which a data transceiver is operated between a plurality of subsystems to process data transmission or reception through a satellite will be described with reference to FIG. 6.

On the other hand, except for the sub system selected as the active mode, the other sub-systems operate in the slave mode and do not perform data transmission processing through satellite communication, but collect and store data as an auxiliary subsystem. In the embodiment of FIG. 3, the ship second system 22 is set to the idle mode because there is an error in the data transmitting / receiving unit 224, but as another example, the information collecting unit 221 is set to the slave mode. And the data storage unit 223 may be set to operate.

Then, the data is extracted from the data storage unit 213 of the ship first system 21 set to the active mode and transferred to the data transceiver 214. The data transceiver 214 transmits data to a satellite via a ship satellite antenna or satellite terminal (not shown) included in the satellite system unit 30. The satellite 10 transmits the data to the land system unit 40 through the satellite operator server of the satellite system unit 30 and the land satellite antenna or the terminal. The land system portion 40 is composed of two land subsystems, namely the land first system 41 and the land second system 42, the data being the land first system 41 and the land second system 42. Each data transmission and reception unit 414 and 424 are transmitted. Data transmitted to the data transmission / reception units 414 and 424 is stored in the data storage units 413 and 423, and then extracted and processed by the data processing unit (not shown) when necessary.

In the embodiment of FIG. 3, it is assumed that the state of the land subsystem included in the land system unit 40 is normal when the detection and control modules 412 and 422 of the land subsystems 41 and 42 detect each other.

Since the detection and control modules 412 and 422 of the onshore first system 41 and the onshore second system 42 receive the data differently from those of the ship system that transmits the data, the detection and control module 412 and 422 respectively detect only the normal operation of the mutual system and the active mode. Alternatively, operation settings such as slave mode may not be controlled. Therefore, the data transmission / reception units 414 and 424 and the data storage units 413 and 423 of each of the terrestrial first system 41 and the terrestrial second system 42 may operate to process the received data. However, the present invention is not limited thereto, and each of the detection and control modules 412 and 422 determines the land subsystem operating in the active mode, and then transmits the data received through the satellite system unit 30 only through the land subsystem in the active mode. Of course it can be set to handle.

In the block diagram of FIG. 3, the data flow sequence represented by the arrow is representative of the process transmitted from the ship system unit 20 to the land system unit 40, and if data is transmitted from the land system unit 40 to the ship system unit ( 20), it is passed in the reverse direction of the arrow. However, in this case, since the land system 40 transmits data, the land subsystem, i.e., the detection and control modules 412 and 422 of the land first system 41 and the land second system 42, respectively, are active. The terrestrial subsystem operating in the mode is determined, and only the terrestrial subsystem set in the active mode may transmit terrestrial data through a data transceiver to which satellite transmission software is applied.

4 illustrates a path through which land data is transmitted when an error occurs in the data transmission / reception unit 414 of the land first system 41 of the land system unit 40.

The detection and control module 422 of the terrestrial second system 42, which has been detecting the terrestrial first system 41 through information exchange with the detection and control module 412 of the terrestrial first system 41, belongs to Control the operation mode of the land second system 42, which is the land sub-system, to the active mode, and transmit the land data to the satellite 10 through the data transmission / reception unit 424 of the land second system 42 in the active mode. To send. The transmission path of the transmitted land data proceeds in the direction of the arrow in FIG. 4, and these paths are different from the transmission path of the ship data in FIG. In addition, the process of setting the operation mode of the land sub-system in the detection and control module 422 of the land second system 42 is the same as that described with reference to FIG.

FIG. 5 shows that the data transceiver 224 of the ship 2 system 22 of the ship system unit 20 and the data transceiver 414 of the onshore first system 41 of the land system 40 are shown in FIG. In all cases, an error occurs and the data transmission process is not performed.

Referring to FIG. 5, the detection and control module 212 of the ship first system 21 and the detection and control module 422 of the land second system 42 are each a relative ship subsystem 22 and a land subsystem. The abnormal situation of the data transmission / reception part of 41 is detected and confirmed, and the operation mode of the said ship 1st system 21 and the land 2nd system 42 is set to an active mode, and it controls.

Ship data is transmitted and stored from the information collection unit 211 of the first vessel system 21 to the data storage unit 213 along the first path (SD), the data transmission and reception unit 214 for executing the satellite operator transmission software ) Is transmitted to the satellite 10 via the satellite antenna of the satellite system unit 30. Then, the ship data is transmitted from the satellite 10 to the satellite operator server of the satellite system unit 30 and the land antenna, and the data transmission / reception unit 424 of the terrestrial second system 42 in the active mode of the land system unit 40. Is received). Then the ship data transmitted from the data transmission and reception unit 424 is stored in the data storage unit 423 of the land system unit 40. The vessel data may be output at a specific time required and processed by the data processor. The land data is the first system of the ship system unit 20 of the ship system unit 20 which is in an active mode in the land second system 42 of the land system unit 40 along the second path LD in the same manner as the process of the ship data. Is passed to 21.

Therefore, the data transmission system according to the present invention can safely exchange data without loss of ship or land data even if an error or failure occurs in the data transmission / reception unit on which the satellite operator transmission software is executed. In addition, unlike the embodiment of FIG. 5, when a ship or a land system includes a plurality of sub-systems, the sub-systems are detected by using a detection and control module, and a sub-system that satisfies a predetermined condition is selected to be active. Drive in mode to control ship or land data.

FIG. 6 is a flowchart illustrating a method of selecting a ship subsystem or a land subsystem that performs data transmission in each detection and control module in such a ship or land system.

6 is a flowchart illustrating a sub system that directly transmits and receives data through satellite communication on the assumption that the ship system unit or the land system unit includes a plurality of ship subsystems or land subsystems, respectively, in the data transmission system according to an exemplary embodiment of the present invention. The process of selecting a system is shown.

First, each sub-system of the ship system unit 20 or the land system unit 40 may be initially set to operate in a slave mode state (S1).

Therefore, each ship sub-system or land sub-system receives the ship data or land data collected from the external sensing device to process the basic data acquisition process to store the data in the data storage. In other words, it is set up to only participate in the collection and storage of the most basic ship or land data.

Then, when data exchange through satellite communication between the ship and the land is required, the detection and control module 212, 222, 412, 422 provided in the information collection unit 211, 221, 411, 421 of each ship subsystem or the land sub-system detects the execution of other systems. Start (S2). That is, it detects whether a plurality of subsystems except for the corresponding subsystem including the corresponding detection and control module are executed. The detection method is to share state information in mutual subsystems through a detection and control module, but is not limited thereto.

The detection and control module inquires whether another system is detected at a specific time (S3), and if the other system fails or is confirmed as running due to an error in a specific configuration, the corresponding detection and control module is included. The subsystem is set to operate in an active mode (S9). That is, in this case, since all other systems fail or are not executed at a predetermined time, the corresponding sub-system operates in the active mode alone.

In this case, the specific time may mean the current time in order to detect in real time, but may also mean a time which is arbitrarily set or reserved in some cases. In addition, the specific time may be a predetermined time point or may mean a period having an arbitrarily set time interval.

If the process proceeds to the step S9 because all the plurality of sub-systems except for the corresponding subsystem is not detected execution, if the execution is detected even in a plurality of sub-system should proceed to the next step S4. When the process proceeds to step S9, the corresponding subsystem is operated in an active mode to transmit or receive ship or land data alone through the data transceiver. A plurality of subsystems in which the remaining executions are stopped need to be repaired and repaired in order to function normally where a failure or error occurs.

When the execution of at least one other subsystem is detected, the state of the corresponding subsystem including the detection and control module currently detecting the other subsystem is re-checked (S4).

In other words, it checks again whether the currently detected subsystem is operating in the active mode or the slave mode.

If the corresponding subsystem is set to the slave mode in the initial stage or is still in the slave mode even after the process has elapsed, the process proceeds to step S5.

It is determined whether a system in an active mode exists among other detected sub-systems while operating in the slave mode (S5). That is, the detection and control module checks the state mode information transmitted through the internal intercommunication to determine whether there is a subsystem set to the active mode.

If at least one other subsystem set to the active mode is detected in step S5, the corresponding subsystem proceeds to step S8, and the subsystem continues to operate in the slave mode.

If at least one subsystem set in the active mode is not detected, the process proceeds to step S7 and the size of the IP address is compared between the corresponding subsystem operating in the slave mode and another subsystem (S7).

That is, when the detection and control module operates to detect other sub-systems and the other sub-systems detected by the sub-system are all in slave mode, the sub-system having the smallest IP address size is compared with each other by comparing the IP address sizes. Determine. In particular, the IP address size is compared by one-to-one correspondence with a plurality of other subsystems based on the corresponding subsystem.

If the IP address size of the corresponding subsystem is larger than the IP address size of the other subsystem, the process proceeds to step S8 and the subsystem is maintained in the slave mode.

On the contrary, if the IP address size of the corresponding subsystem is smaller than the IP address size of the other subsystem, the process proceeds to step S9 and the subsystem operates in the active mode.

On the other hand, if the current state of the corresponding subsystem is set to the active mode in the step S4, the process proceeds to step S6.

In step S6, it is determined whether there is an active mode system among other subsystems detected by the corresponding subsystem (S6).

If no other subsystem set to active mode is detected at step S6, the subsystem proceeds to step S9, and the subsystem is still operated in the active mode.

However, if at least one sub-system set to the active mode is detected at step S6, the process proceeds to step S7 to compare the size of the IP address between the corresponding sub-system operating in the active mode and the other sub-system operating in the active mode (S7).

In this case, even if a plurality of other sub-systems operating in the active mode are detected, the size of the IP address may be compared with the corresponding sub-system in one-to-one correspondence.

If the IP address size of the corresponding subsystem is larger than the IP address size of another subsystem in step S7, the process proceeds to step S8 and the subsystem is changed from the active mode to the slave mode.

On the contrary, if the IP address size of the corresponding subsystem is smaller than the IP address size of another subsystem, the process proceeds to step S9 to maintain the active mode.

As can be seen in the flowchart of FIG. 6, if one subsystem is set to the active mode, the subsystem is continuously provided unless a subsystem in the active mode is detected as a subsystem having an IP address smaller than the subsystem. The active mode state will be maintained by looping through the flowchart of FIG. 6.

Referring to FIG. 6, a sub-system capable of comparing the corresponding sub-system with a plurality of other sub-systems detected through the steps S3 to S6 according to a predetermined priority selection condition and finally operating in an active mode at the present time point. Select your system. Sub-systems that do not correspond to the priority selection condition will operate in slave mode.

In the embodiment of FIG. 6, the size of the IP address of each subsystem is compared as the priority selection condition. In other words, the smaller the IP address size, the more active the main mode is selected. If the IP address size is smaller than the IP address of another subsystem detected, the corresponding subsystem is selected and operated. will be. Otherwise, the subsystem goes to step S8 to maintain slave mode.

The priority selection condition for setting the active mode in step S7 of FIG. 6 may be variously set in addition to the contrast of the IP address size and is not particularly limited. For example, it can be selected by comparing the size of the storage capacity of the subsystem or by comparing the order of download or execution date of the satellite transmission software.

An example will be described to help understand the mode selection process of FIG. 6.

Subsystems of ship systems include sub-systems A, B, C, and D, and those subsystems that detect other subsystems are considered to be A.

At this time, the A subsystem is initially set to the slave mode (S1).

When the A subsystem detects whether another subsystem is running at a specific time (S3), only the B and C subsystems are detected when the D subsystem fails.

If all of the B, C, and D subsystems are not detected because of a failure or error, the A subsystem is switched to the active mode in step S9.

If only the D subsystem fails, the process proceeds to step S4, where the status of the A subsystem is checked once again. In this case, since the A subsystem is still in the slave mode, the process proceeds to step S5 to acquire the state modes of the B and C subsystems. If either of the B and C subsystems is in active mode, then the A subsystem goes to step S8 to maintain slave mode. However, if both B and C subsystems are slave mode, the process proceeds to step S7 to compare the IP address sizes between the slave mode A, B, and C subsystems. The subsystem A is reset to the active mode only when the IP address of the subsystem A is the smallest compared to the B and C subsystems based on the subsystem A, respectively.

 Sub-system A changed to active mode in step S9 goes back to step S2 to continuously detect whether other systems are running. When the other system is detected in step S3, it checks its own setting mode in step S4. In this case, since the sub-system A is an active mode, it inquires about the state mode of the other subsystem detected in the step S6.

In this example, if both B and C subsystems are in slave mode, the A subsystem goes back to step S9 to repeat the process.

If either of the B and C subsystems, or both B and C subsystems are in active mode, go to step S7 to compare IP address sizes between the subsystems in active mode.

If the IP address of the A subsystem is smaller than the IP address of the B or C subsystem in the active mode, the process proceeds to step S9 and remains in the active mode. If the IP address of the B or C subsystem is smaller than the IP address of the A subsystem, the A subsystem goes to step S8 and changes to slave mode.

The present invention has been described above in connection with specific embodiments of the present invention, but this is only an example and the present invention is not limited thereto. Those skilled in the art can change or modify the described embodiments without departing from the scope of the present invention, and such changes or modifications are within the scope of the present invention. In addition, the materials of each component described in the specification can be easily selected and replaced by a variety of materials known to those skilled in the art. Those skilled in the art will also appreciate that some of the components described herein can be omitted without degrading performance or adding components to improve performance. In addition, those skilled in the art may change the order of the method steps described herein depending on the process environment or equipment. Therefore, the scope of the present invention should be determined by the appended claims and equivalents thereof, not by the embodiments described.

10: satellite 20: ship system part
30: satellite system portion 40: land system portion
50: ship detection device 60: land detection device

Claims (12)

In the ship-to-shore data transmission system using satellite,
A ship system unit configured to transmit the collected ship data to the land using satellite communication or to receive land data from the land using the satellite communication;
A land system unit configured to transmit the collected land data to the ship using the satellite communication or to receive the ship data from the ship using the satellite communication; And
Includes a satellite system unit for connecting the satellite communication between the ship system unit and the land system unit,
The ship system unit and the land system unit,
Data collection unit for collecting predetermined data, data storage unit for storing predetermined data, and data transmission / reception for transmitting and receiving data to and from the satellite through the satellite system unit by executing satellite operator transmission software provided by the satellite system unit. Including a plurality of subsystems comprising a portion,
Selecting a first sub-system which transmits / receives predetermined data through the satellite system unit from among sub-systems which detect each state of each of the plurality of sub-systems provided in the corresponding system unit. Data transmission system between ship and land. The method of claim 1,
Each of the plurality of subsystems,
A detection and control module configured to detect states of the plurality of subsystems to mutually detect a normally operable subsystem, and to select the first subsystem that transmits and receives predetermined data to the satellite among the normally operable subsystems. A data transmission system between a ship and a land using a satellite, characterized in that. The method of claim 2,
The detection and control module,
And selecting the first sub-system by comparing an IP address size among the sub-operable sub-systems. The method of claim 2,
The detection and control module included in the second sub-system other than the first sub-system among the normally operable sub-systems respectively deactivates the transmission function of the data transmission unit included in the corresponding sub-system. System for transmission of data between land and land. The method of claim 1,
The normal operating sub-system is a sub-system except for a sub-system in which all or a part of the sub-system is not operated or an error occurs among the plurality of sub-systems. . The method of claim 1,
The satellite system unit,
A satellite comprising a satellite operator server, a ship satellite antenna for relaying data transmission between the ship system unit and the satellite, and a land satellite antenna for relaying data transmission between the satellite and the land system unit. Data transmission system between ship and land. The method of claim 1,
The ship system unit or the land system unit,
And a data processing unit for outputting and processing information by outputting ship data or land data stored in the data storage unit. The method of claim 1,
The vessel data,
Data transmitted between at least one of ship navigation related information, ship surrounding information, ship's internal system information, and baggage information loaded on a ship, which is information collected from the ship. system. The method of claim 1,
The land data,
Data transmitted between the ship and the land using the satellite, characterized in that the information collected from the land as at least one of the operator information associated with the satellite operator or the ship company, ship-related information of the other ship company, and ship-related information. system. A ship system unit for transmitting ship data or receiving land data using satellite communication; A land system unit which transmits the land data or receives the ship data using the satellite communication; And a satellite system unit for connecting the satellite communication between the ship system and the system unit.
The ship system unit and the land system unit, an information collection unit for collecting predetermined data, a data storage unit for storing predetermined data, and the satellite operator transmission software provided by the satellite system unit to execute predetermined satellite data to the predetermined satellite In the data transmission method of a data transmission system including a plurality of sub-system including a data transmission and reception unit for transmitting and receiving to a satellite via a system unit,
a) extracting a normally operable subsystem by detecting an operating state of each of the plurality of subsystems;
b) when there is one normally operating subsystem, the subsystem operating in an active mode for transmitting and receiving data to and from the satellite through the satellite system unit;
c) When there are a plurality of normally operable subsystems and one active mode subsystem operating in the active mode, the first subsystem except for the active mode subsystem in the normally operable subsystem is configured to transmit the data transmission unit. Operating in a slave mode deactivating a function; And
d) if there are a plurality of normally operable subsystems and there are a plurality of active mode subsystems, only one of the plurality of active mode systems operates in an active mode, and the other subsystems operate in a slave mode; Method of transmitting data between ship and land using satellite. The method of claim 10,
Each of the plurality of subsystems includes a detection and control module for detecting a state of the corresponding subsystem,
The step a)
And detecting, by the detection and control module, a sub-system except for a sub-system in which all or a part of the sub-system is not operated or an error occurs among the plurality of sub-systems. To transfer data between them. The method of claim 10,
Step d)
When there are a plurality of active mode subsystems, the IP address sizes of the active mode subsystems are compared, the subsystem having the smallest IP address size operates in the active mode, and the other subsystems operate in the slave mode. Method of transmitting data between a ship and a land using a satellite, characterized in that it comprises a step.

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