CN109362061B

CN109362061B - Shore-based watch and management system of VHF frequency band data exchange system

Info

Publication number: CN109362061B
Application number: CN201811393556.6A
Authority: CN
Inventors: 张尧; 曹建文; 夏耘; 张凤; 高祥武; 邓志均; 唐塞丽; 吴新峰; 阎岩; 许昶
Original assignee: China Academy of Launch Vehicle Technology CALT
Current assignee: China Academy of Launch Vehicle Technology CALT
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2021-08-10
Anticipated expiration: 2038-11-21
Also published as: CN109362061A

Abstract

A shore-based guard and management system of a VHF frequency band data exchange system comprises a central server, a data storage server, a man-machine management computer, time service equipment, alarm equipment and network equipment, wherein the central server can carry out maritime business management, system state management and time management. The time service equipment generates time service data and sends the time service data to the central server, the data storage server, the man-machine management server and the accessed VDES shore stations for time synchronization; the central server can receive external maritime business application data, analyze the external maritime business application data, send the analyzed data to the data storage server for storage, and send the analyzed data to the man-machine management server for real-time display; the system can be used as a shore-based management center of a VHF frequency band data exchange system (VDES), can perform management configuration and operation maintenance on the whole VDES communication network, and supports the service operation of the VDES system.

Description

Shore-based watch and management system of VHF frequency band data exchange system

Technical Field

The invention relates to a shore-based duty and management system of a VHF frequency band data exchange system. Belongs to the technical field of electronic information technology and maritime affairs.

Background

A VHF (very high frequency) data Exchange System (hereinafter, abbreviated as VDES) is the core of next-generation international maritime communications. The VDES is a complete set of communication system, which consists of a ship station, a shore station and a central management system, and is designed to provide higher and stronger data exchange capacity in maritime VHF mobile bands in the global range. VDES can meet the current needs of all data exchange services between ship-to-ship and ship-to-shore. In order to realize management configuration and operation maintenance of the whole VDES system and support service operation of the VDES system, the VDES system needs to be configured with a set of shore-based management system in a certain area, and the prior art cannot play roles in guarding and managing the VDES system in the area, monitor orderly operation of the VDES system, including monitoring all accessed shore stations and monitoring all ship stations in the area through the shore stations.

Disclosure of Invention

The technical problem solved by the invention is as follows: the shortcomings of the prior art are overcome, and the shore-based attendance and management system of the VHF frequency band data exchange system is provided aiming at the attendance and management requirements of the VDES system in the region, so that the management configuration and the operation maintenance of the whole VDES system can be realized, and the service operation of the VDES system is supported.

The technical solution of the invention is as follows: a shore-based duty and management system for a VHF band data exchange system, comprising: the system comprises a central server, a data storage server, a man-machine management computer, time service equipment, alarm equipment and network equipment.

The central server, the data storage server, the man-machine management server and the man-machine management computer are interconnected through network equipment; the central server generates a time synchronization signal provided by a GNSS ephemeris at system initialization and set time according to the satellite GNSS information, carries out time service on a VDES (vertical double-layer orbit) shore station and sends the time synchronization signal to time service equipment; the time service equipment generates time service data and sends the time service data to the central server, the data storage server, the man-machine management server and the accessed VDES shore stations for time synchronization; the central server can receive external marine service application data (including marine safety information, meteorological information and broadcast information), analyze (format-standardized analysis), send to the data storage server for storage, and send to the man-machine management server for real-time display; the central server can monitor and collect working data (original message data, chart data are stored according to an S57 file format) of an external VDES bank station in real time, extract fault alarm information, and judge (judge according to an appointed alarm code in the fault alarm information) system fault conditions according to the extracted fault alarm information; if the system has a fault, controlling external alarm equipment to carry out sound, light and short message alarm according to the judged system fault condition; the central server can realize data conversion with the VDES shore stations, perform identity authentication and access authorization on each access shore station, and receive and distribute maritime messages interacted with the VDES shore stations.

The VDES bank station can send the received ship station broadcast information (the ship station broadcast information comprises ship station voyage information and ship information) and the bank station state information (the bank station state information comprises the attribute of the bank station equipment and the state of a bank station channel) to the man-machine management server through the central server for display; and sending the data to a business service module for summarizing and filtering to obtain the required ship and shore station data.

The man-machine management server can receive the service data sending application of the central server and send the service data sending application to the man-machine management computer, and the approval condition of the man-machine management computer for sending application is fed back to the service module.

A central server, comprising: the system comprises a business service module, a system state watching and alarming service module, a shore station management service module and a system time service module.

And the business service module realizes data conversion with the marine business system, forwards the received marine business system data to the shore station management service module, and simultaneously reports the marine business data to the marine business system.

The system state guarding and alarm service module can monitor the network state between the VDES bank station and the bank-based guarding and management system, judge the integrity of the system, namely the fault condition, according to the bank station fault alarm information reported by the bank station management service module, and control the external alarm equipment to carry out sound, light and short message alarm according to different levels according to the judged system fault condition.

The shore station management service module is used as an interface to realize data conversion between the shore-based duty and management system and the VDES shore stations, perform identity authentication and access authorization on each access shore station, and receive and distribute maritime messages interacted between the VDES shore-based duty and management system and the VDES shore stations.

And the system time service module is used for carrying out time service on each operating system of the shore-based duty and management system and the VDES shore station at the system initialization and set time based on the satellite GNSS information.

And the system state watching and alarming service module monitors network states including on-off, time delay and each section of routing switching states between the VDES bank station and the bank-based watching and managing system.

The central server can perform maritime business management, system state management and time management.

The criterion for judging the integrity of the system, namely the fault condition, is as follows: if no fault code exists in the working data, the system is judged to be intact and has no fault, and if the fault code exists, the system is judged to be not intact, the system is judged to have a fault.

The shore station management service module can monitor and collect the working data of the external VDES shore station in real time, wherein the working data comprises original message data and chart data stored according to an S57 file format.

The shore station management service module is used as an interface to realize data conversion between the shore-based watch and management system and the VDES shore station, and the data conversion refers to the following steps: the shore-based duty and management system sends a control instruction through the shore station management service module, the control instruction is generated by the man-machine management server, the control instruction is used for controlling the VDES shore station to send marine safety information to the ship station, and the other way of the control instruction is as follows: and the service module receives a control command generated by an external marine service system, and the control command is used for controlling the VDES shore station to send marine safety information to the ship station.

The VDES bank station can send the received ship station broadcast information and the bank station state information to the man machine management server through the bank station management service module for display; and sending the data to a business service module for gathering and filtering to obtain data required by the maritime personnel, wherein the required data comprises: ship track, ship static and voyage information, communication state of a ship, basic working state of a shore station, communication state and broadcast state of a shore station report;

the basic working state of the shore station comprises a shore station on or off state;

the communication state comprises whether the communication can be normally carried out with the guarding and management system or the ship station;

the bank station reports the broadcast state, the bank station sends messages to ships in the sea area at regular time, the control command can control the frequency of the messages, and the bank station reports the broadcast state and comprises whether the messages are sent to the ships in the sea area at regular time.

The data storage server, as a data storage and management center of the VDES system, has the following functions:

(1) network communication is achieved with other devices through a network device.

(2) Storing various original message data according to a text format, and storing chart data according to an S57 file format.

(3) And receiving and storing data sent by the shore station management service module, the business service module and the system display control service module, and reporting the state to the system state watching and alarming service module.

(4) And the business service module is supported to inquire, update, insert and store the stored data items.

(5) And recording a main working log in the operation process of the data storage server.

The man-machine management server realizes the man-machine interaction service function of the system through the system display control service module, and the function is as follows:

(1) network communication is achieved with other devices in the system through a network device.

(2) And receiving various data required to be displayed and reported by the shore station management service module, and analyzing, classifying, storing and displaying the data.

(3) And receiving a service data sending application or a data state of the service module, sending the service data sending application or the data state to the man-machine management computer, and feeding back an approval condition of a man-machine interface of the man-machine management computer to the service module.

(4) And receiving and displaying the system fault state reported by the system state guarding and alarm service module, and supporting the human-computer interface of the human-computer management computer to input an instruction to relieve the alarm.

(5) According to the input of a human-computer interface of a human-computer management computer, system parameter configuration and real-time control instructions are sent to a bank station management service module, and the selection and the sending of the required business formatted data are supported.

(6) And according to the input of a human-computer interface of the human-computer management computer, sending the marine business data to the shore station management service module, and supporting the selection and sending of the required business formatted data.

The traffic flow of the system comprises the following:

(1) the service flow initiated by the external maritime service system is sent to a VDES shore station through the central server and then sent to a VDES ship station, and the VDES ship station is installed on the ship.

(2) The service flow initiated by the man-machine management server comprises the following steps: the man-machine management server sends the business flow to the ship station, sends the business flow to the shore station and sends the business flow to the data storage server.

(3) Service flow initiated by ship station or reported regularly: initiated (or timed delivery) by the ship station to an external marine service system.

(4) Traffic flow initiated (or timed announcements) by the shore station: initiated (or periodically reported) by the shore station to the central server of the VDES shore-based watchman and management system.

VHF band data Exchange System VHF (very high frequency) data Exchange System (VHF Date Exchange System, hereinafter abbreviated as VDES) is the core of next generation international maritime communications. The VDES is a complete set of communication system, which consists of a ship station, a shore station and a central management system, and is designed to provide higher and stronger data exchange capacity in maritime VHF mobile bands in the global range. VDES can meet the current needs of all data exchange services between ship-to-ship and ship-to-shore.

The method is characterized in that the automatic management of the communication network time slot is realized by adopting a mode of summarizing and processing on the basis of the data reported by each ship station in a shore-based on-duty and management system, namely, the problem of switching time slot management among multiple shore stations by a VHF frequency band data exchange system and the time slot conflict of the automatic broadcast message and the broadcast message under specified conditions are solved.

The business service module, the system state guard and alarm service module, the shore station management service module and the system time service module in the central server are interconnected through a message queue bus, and the classified opening of data to different users is realized through combining the message queue with the authority setting of the central server, so that the expansibility and the maintainability of the shore base guard and management system facing different users are improved.

All operations of the user on-shore base guard and management system are initiated through the electronic chart in the man-machine management computer, configuration management operation of the selected elements is achieved through clicking of elements of a shore station and a ship station on the electronic chart provided by a display and control service module in the man-machine management server, and corresponding control instructions of the elements selected by the control points are automatically analyzed and sent to the selected elements through logic prestored in the display and control service module.

The display control service module in the man-machine management server has the logic control functions of ship station prestoring, such as ship track tracking, ship information display, ship station service message display, ship station information inquiry and display configuration.

The ship track tracking comprises two functions of track tracking on and track tracking off; the ship information display function automatically detects whether the target ship is a class A ship or a class B ship according to the information reported by the target ship and gives corresponding display options; the 'ship station service message display' function comprises 'message sending to ship', 'message display sent by ship' and 'historical message display'; the ship station information inquiry function comprises three functions of dynamic information inquiry, static information inquiry and UTC time inquiry, automatically detects whether a target ship is an A-type ship or a B-type ship according to the information reported by the target ship, and provides corresponding display options; the display configuration function comprises two functions of trace tracking and service message prompting.

The pre-storing control logic function of the man-machine management server display control service module to the shore station comprises the following steps: "shore station status display", "service message display", "communication monitoring", "device configuration", "display configuration". The "shore station status display" function includes four functions of "basic status display", "communication status display", "shore station report broadcast", "DGNSS broadcast (DGNSS denotes differential GNSS)"; the 'business message display' function comprises three functions of 'broadcasting messages to ships', 'received message display' and 'historical message display'; the "communication monitoring" function includes 5 functions of "basic status display", "assignment mode command transmission" (ITU 16), "ship station and shore station link management (FATDMA)" (ITU 20), "ship station and shore station channel management (management of ship stations is realized by configuration of shore stations)" (ITU 22), "group assignment command transmission" (ITU 23); the functions of the 'equipment configuration' comprise 6 functions of 'equipment basic state display', 'equipment alarm monitoring', 'equipment network state', 'equipment identity configuration', 'equipment peripheral configuration' and 'equipment restart'; the "display configuration" function includes two functions of "display of the coverage area of the shore station", "prompt of the shore station service message (prompt of success or failure of receiving the service message or sending the service message by the shore station)".

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention adopts the overall architecture of the central server, the data storage server, the man-machine management computer and the satellite navigation equipment, and realizes the integral integration of the functions of system service processing, data processing man-machine interaction, alarm detection and the like.

(2) Aiming at the problem of time slot switching management of a VHF frequency band data exchange system between multiple shore stations and multiple base stations and the problem of time slot conflict of an automatic broadcast message and a broadcast message under a specified condition, the invention adopts a mode of summarizing and processing the broadcast data in the system based on each ship station to realize the automatic management of the time slot of the communication network.

(3) The invention combines the bus technology with the system platform authority management technology, realizes the hierarchical opening of data to different users, and improves the system expansibility.

(4) The invention adopts a mode that all operations of the system are initiated by the electronic chart, and the relevant elements are configured and managed by clicking and selecting various elements such as an electronic chart shore station, a ship station and the like provided by the system display and control service module, and the corresponding control instructions are automatically analyzed and sent to the relevant elements by background logic, so that the convenience and the intuition of operators on the management of the complex communication network system are realized.

(5) The invention can realize management configuration and operation maintenance of the whole VDES system and support the service operation of the VDES system.

Drawings

FIG. 1 is a diagram of a construction of a shore-based watch and management system of a VHF band data exchange system;

FIG. 2 is a flow chart of a business initiated by an external maritime system without operator confirmation;

FIG. 3 is a flow chart of a business initiated by an external marine system requiring operator confirmation;

FIG. 4 is a flow chart of a business initiated by the human management service to a ship station;

FIG. 5 is a flow chart of a business initiated by the SMSC to a shore station;

FIG. 6 is a flow chart of a business initiated by a ship station to an external marine system;

fig. 7 is a flow chart of a service initiated by a shore station to the system.

Detailed description of the preferred embodiment

The invention is described in further detail below with reference to the accompanying drawings and specific embodiments:

aiming at the comprehensive management task of the VHF frequency band data exchange system, a bank-based system which can manage and monitor a plurality of layers of equipment, channels, states, services and the like of the VHF frequency band data exchange system comprising a plurality of bank stations and ship stations is needed, so that the comprehensive management and control of the whole system are realized, and the reliable and safe operation of the VHF frequency band data exchange system is ensured. Therefore, a shore-based duty and management system of the VHF frequency band data exchange system is designed, and the specific implementation is as follows:

the invention relates to a shore-based duty and management system of a VHF frequency band data exchange system, which comprises: the system comprises a central server, a data storage server, a man-machine management computer, time service equipment, alarm equipment and network equipment.

The central server, the data storage server, the man-machine management server and the man-machine management computer are interconnected through network equipment; the central server generates a time synchronization signal provided by a GNSS ephemeris at system initialization and set time according to satellite GNSS information, performs time service on a VDES bank station and sends the time synchronization signal to time service equipment; the time service equipment generates time service data and sends the time service data to the central server, the data storage server, the man-machine management server and the accessed VDES shore stations for time synchronization.

The central server can receive external marine service application data (the marine service application data comprises marine safety information, meteorological information, broadcast information and the like), performs standard formatting analysis, sends the data to the data storage server for storage, and sends the data to the man-machine management server for real-time display; the central server can monitor and collect the working data (the working data is original message data, chart data is stored according to S57 file format) of the external VDES bank station in real time, the fault alarm information is extracted according to the appointed field appointed by both parties, and the system fault condition is judged according to the extracted fault alarm information and the fault code appointed by both parties; if the fault occurs, controlling external alarm equipment to carry out sound, light and short message alarm according to different safety and reliability levels according to the judged system fault condition, relating to the alarm of the highest safety fault by adopting sound, light, electricity and short messages, relating to the alarm of general safety faults by adopting sound, light and electricity, relating to the alarm of general reliability faults by adopting sound and light means, and relating to the alarm of state change by adopting sound means; the central server can realize the conversion from the shore station access data to the central processing data between the central server and the VDES shore stations, perform identity authentication and access authorization on each access shore station according to IP addresses, equipment serial numbers, firmware versions and other multi-means, and receive and distribute maritime messages (including maritime service messages appointed by international maritime organizations such as tide information, chart information, safety text information and the like) interacted with the VDES shore stations.

The VDES bank station can send the received information such as the ship station voyage number information and the ship information broadcasted by the ship station and the bank station state information such as the attribute of the bank station equipment and the channel state of the bank station to a man-machine management server through a central server for displaying; and the ship information is sent to a business service module to be gathered and recorded into a database, and the same ship information provided by a plurality of shore stations is filtered according to the time sequence to obtain the required ship and shore station data, which can be the ship country, call sign, destination, working state of the shore station and the like.

The man-machine management server can receive the business data transmission application of the central server, which relates to the key business, and send the application to the man-machine management computer, and feed back the approval condition of the man-machine management computer to the transmission application to the business service module.

A central server, comprising: the system comprises a business service module, a system state monitoring and alarming service module, a shore station management service module and a system time service module;

and the business service module is used for realizing data conversion from an XML format to a binary sequence with an external marine system, transmitting the received marine business system data (including marine business system data such as tide information, chart information, safety text information and the like broadcasted to the ship bank) to the shore station management service module, and simultaneously reporting the marine business data (including marine business system data such as tide information, chart information, safety text information and the like broadcasted to the external marine system) to the marine business system.

The system state guarding and alarm service module can monitor the network states (including on-off, time delay and routing switching states) between the VDES bank station and the bank-based guarding and management system, judge the integrity of the system, namely the fault condition, according to fault alarm information reported by the bank station management service module, judge four events of highest safety fault, general reliability fault and state change reminding, and control external alarm equipment to alarm by sound, light and short messages according to different levels according to the judged system fault event. The alarm system relates to the alarm of the highest safety fault by adopting sound, light, electricity and short messages, relates to the alarm of general safety faults by adopting sound, light and electricity, relates to the alarm of general reliability faults by adopting sound and light means, and relates to the alarm of state change by adopting sound means.

The shore station management service module is used as an interface to realize the data conversion from the user-defined binary data to the IEC standard format between the shore-based guard and management system and the VDES shore stations, perform identity authentication and access authorization on each access shore station, and receive and distribute maritime affair messages interacted between the VDES shore-based guard and management system and the VDES shore stations.

The VDES bank station can send the received information (including ship static information, dynamic information, voyage information and the like) broadcasted by the ship station and the state information (including the state of equipment of the bank station, the communication state of the bank station and the like) of the bank station to a human machine management server through a bank station management service module for displaying; and sending the ship information to a business service module for gathering and recording the ship information into a database, and filtering the same ship information provided by a plurality of shore stations according to a time sequence to obtain data required by maritime personnel, wherein the required data can comprise: ship track, ship static and voyage information, communication state of a ship, basic working state of a shore station, communication state and broadcast state of a shore station report;

(1) network communication is realized through the network equipment and other equipment such as a central server, a man-machine management server and the like.

(1) network communication is realized with other devices such as a central server, a data storage server and the like in the system through network devices.

(2) And receiving various data required to be displayed and reported by the shore station management service module, and completing the analysis, classified storage and display from IEC normalized data to user-defined binary data.

(3) And receiving a service data sending application or a service operation key data state of the service module, sending the service data sending application or the service operation key data state to the human-computer management computer, and feeding back the approval condition of a human-computer interface of the human-computer management computer to the service module.

(4) And receiving and displaying the system fault state after classification and judgment by the system state guarding and alarm service module, and supporting a human-computer interface input instruction of a human-computer management computer to relieve the alarm.

(5) According to the input of a human-computer interface of a human-computer management computer, real-time control instructions such as parameter configuration of a system working mode, channel management and the like, networking synchronous time service, position broadcasting and the like are sent to a bank station management service module, and the selective sending of business formatted data required by safety information, position reports and the like is supported.

(6) According to the input of a human-computer interface of a human-computer management computer, marine business data (including marine business system data such as tide information, chart information and safety text information broadcasted to an external marine system, marine business system data such as tide information, chart information and safety text information broadcasted to a ship bank) are transmitted to a shore station management service module, and the selection and transmission of required business formatted data are supported.

The traffic flow of the system comprises the following:

(1) various service flows initiated by an external maritime service system and represented by maritime information broadcasting are sent to a VDES shore station through a central server and then sent to a VDES ship station, and the VDES ship station is arranged on a ship (as shown in figures 2 and 3)

(2) The service flow initiated by the man-machine management server comprises the following steps: the man-machine management server sends various service flows represented by system management information broadcasting to the ship station, various service flows represented by shore station equipment management to the shore station, and various service flows represented by data query to the data storage server.

(3) Traffic flows, represented by ship station position reports, initiated by ship stations or reported regularly: initiated (or timed delivery) by the ship station to an external marine service system.

(4) A traffic flow initiated by the shore station (or reported regularly), represented by a shore station status broadcast: initiated (or periodically reported) by the shore station to the central server of the VDES shore-based watchman and management system.

The business service module, the system state guard and alarm service module, the shore station management service module and the system time service module in the central server are interconnected through the message queue bus, and the message queue for uniformly transmitting the bottom data of the system is combined with the authority setting of the central server, so that the classified opening of the data to different users is realized, and the expansibility and the maintainability of the shore base guard and management system facing different users are improved.

All operations of inquiring, modifying, controlling and the like of the user on-shore base duty and management system are initiated through an electronic chart in a man-machine management computer, the configuration management operation of the selected elements corresponding to the interface character description is realized through clicking of elements of a shore station and a ship station on the electronic chart provided by a display and control service module in a man-machine management server, and the corresponding instructions of inquiring, modifying, controlling and the like of the elements selected by the control points are automatically analyzed and sent to the selected elements through prestored logics in the display and control service module.

The ship track tracking comprises two functions of track tracking opening and track tracking closing; the ship information display function automatically detects corresponding fields according to the ship information reported by the target ship, judges whether the target ship is a class A ship or a class B ship and provides corresponding display options; the ship station service message display function comprises a function of sending a message to a ship, displaying the message sent by the ship and displaying ship history messages; the ship station information query function comprises three functions of ' dynamic information query ' (querying dynamic information such as ship speed and course), static information query ' (querying static information such as ship name and call sign) and ' UTC time query ' (querying universal time of a ship station), and automatically detects whether a target ship is an A-type ship or a B-type ship according to information reported by the target ship and gives corresponding display options; the display configuration function comprises two functions of track tracing (realizing historical track tracing of a specified ship) and business message prompting (prompting of a marine business message).

The pre-storing control logic function of the man-machine management server display control service module to the shore station comprises the following steps: "shore station state display" (shore station equipment state, communication state, etc.), "service message display" (prompt of marine service message), "communication monitoring", "equipment configuration" (power supply mode, IP address, password setting, etc.), "display configuration". The "bank station status display" function includes four functions of "basic status display" (device name, firmware number, deployment time, etc.), "communication status display" (time slot occupancy, future time slot allocation table, etc.), "bank station report broadcast" (bank station name, bank station position, bank station type, etc.), "DGNSS broadcast (DGNSS stands for differential GNSS)"; the 'business message display' function comprises three functions of 'broadcasting messages to ships', 'received message display' and 'historical message display'; the "communication monitoring" function includes 5 functions of "basic status display" (summary status such as time slot occupancy rate), "assignment mode command transmission" (ITU 16), "ship station and shore station link management (FATDMA)" (ITU 20), "ship station and shore station channel management (management of ship stations is realized by configuration of shore stations)" (ITU 22), "group assignment command transmission" (configuration of communication status of all ship stations within a certain range) (ITU 23); the functions of the equipment configuration comprise 6 functions of equipment basic state display (equipment name, working voltage, working current and the like), equipment alarm monitoring, equipment network state (segment connection, delay and the like), equipment identity configuration (user name, user data and the like), equipment peripheral configuration (interfaces for debugging, such as serial ports, network ports and the like) and equipment restart; the "display configuration" function includes two functions of "display of the coverage area of the shore station", "prompt of the shore station service message (prompt of success or failure of receiving the service message or sending the service message by the shore station)".

FIG. 1 is a schematic diagram of the system of the present invention. A shore-based guard and management system of a VHF frequency band data exchange system comprises a central server, a data storage server, a man-machine management computer, time service equipment and network equipment.

The central server is a service center of the whole set of system, realizes network communication with other devices in the network through network equipment, runs 4 modules of a service module, a system state watching and alarming service module, a shore station management service module and a system time service module, is started and operates automatically, and supports self-recovery integrity monitoring. The service module, the system state guarding and alarming service module and the shore station management service module are accessed through the system display control service module on the man-machine management server, so that man-machine interaction is realized. The function and interaction design of the 4 modules is as follows:

1. business service module

(1) Providing an interface between the system and an external marine service system and a data conversion function;

(2) the received external maritime business data are forwarded to a shore station management service module:

1) dividing according to the business process:

for data items which do not need to be approved by the system display and control service module, directly forwarding the data items to the shore station management service module;

for data items needing to be approved by the system display and control service module, the forwarded data abstract and the forwarding state are firstly reported to the system display and control service module, and the data are forwarded to the shore station management service module after being approved by the system display and control service module.

2) Dividing according to data types:

broadcasting maritime business service set data (including hydrometeorology information, navigation warning information, search and rescue information, piloting business and the like of specific region temperature, air pressure, humidity index and the like expressed in a special binary data form) for maritime safety information, and converting the maritime safety information into IEC (international electrotechnical commission) messages or custom messages;

and converting the data of the electronic chart maritime affair service set into a self-defined message.

(3) Broadcasting data to an external maritime business system:

providing a data request of a ship station or a system display and control service module to an external marine business system;

and reporting the received various marine business data to an external marine business system.

(4) The function of requesting the data storage service module for the electronic chart data stored in the system is provided;

(5) providing various data to be stored to a data storage service module, wherein the data comprise text data input by an external maritime business system, an electronic chart abstract (a chart number, a request user, a broadcasting mode and time) and the like;

(6) and recording main working logs in the running process of the module.

2. System state on duty and alarm service module

(1) Monitoring network states between the shore stations and the system, wherein the network states comprise on-off, time delay, routing switching states of all sections and the like, and analyzing and judging the network connection state between the system and each shore station subsystem;

(2) analyzing and judging the integrity and the fault condition of the system according to the shore station fault alarm information reported by the shore station management service module;

(3) according to the periodic statistics of the modules, the running state, the throughput, the interaction times and the interaction result between the modules and the external modules, the integrity and the fault condition of the system are analyzed and judged:

analyzing and judging the integrity and the fault condition of the system according to the state reported by the shore station management service module;

analyzing and judging the integrity and the fault condition of the system according to the state reported by the business service module;

analyzing and judging the integrity and the fault condition of the system according to the state reported by the data storage service module;

and analyzing and judging the integrity and the fault condition of the system according to the state reported by the system display control service module.

(4) Controlling external alarm equipment to carry out sound, light and short message alarm according to different levels according to the analyzed and judged system fault condition;

(5) reporting the system fault state to a system display and control service module;

(6) according to the system display control service module or the instruction input on the alarm peripheral, the alarm is relieved;

(7) submitting the fault and the processed fault data to a data storage service module for formatted storage;

(8) and recording main working logs in the running process of the module.

3. Shore station management service module

(1) Providing an interface between the system and a shore station subsystem and a data conversion function;

(2) performing identity authentication and access authorization on each access shore station;

(3) receiving, processing and distributing IEC messages and custom messages interacted between the system and the shore station subsystem, comprising the following steps:

receiving real-time and off-line original data reported by each shore station, submitting the real-time and off-line original data to a data storage system service module for storage, wherein the original data can be stored according to a text format;

filtering repeated messages reported by multiple shore stations;

processing heartbeat packet messages and bank station login messages, and reporting the connection state to a system state watching and alarming service module;

distributing the filtered original message to related users (a man-machine interaction management service module, a business service module, a data storage service module, a system state watch and alarm service module);

and receiving and forwarding data sent by the business service module or the man-machine interaction management service module to the shore station.

(4) And recording main working logs in the running process of the module.

4. System time service module

(1) Based on the GNSS information, each operating system of the system and the shore station subsystem is timed at system initialization (or at intervals).

(2) The system time service module runs on the operating system and outside the message queue bus, and time service to the shore station subsystem is not needed through the shore station management module.

The data storage server realizes network communication with other devices in the network through the network device. The data storage server runs a data storage system service module. The data storage service module preferably starts a source database to store formatted data, stores various original message data according to a text format, and stores chart data according to an S57 file format. The function and interaction design of the data storage system service module is as follows:

(1) receiving and storing data sent by the shore station management service module, the business service module and the system display control service module;

(2) supporting query, update, insertion and storage of data items;

(3) reporting the state to a system state watch and alarm service module;

(4) and recording main working logs in the running process of the module.

The man-machine management server realizes network communication with other devices in the network through the network device. The man-machine management server operation system display control service module has the following module functions and interaction design:

(1) receiving various data required to be displayed and reported by the shore station management service module, and analyzing, classifying, storing and displaying the data;

(2) receiving an external maritime affair service data sending application or a data state of the service module, and feeding back the approval of the human-computer interface to the service module;

(3) receiving and displaying a system fault state reported by a system state watching and alarming service module, and supporting an interface to input an instruction to relieve an alarm;

(4) according to the input of a human-computer interface, sending a system parameter configuration and real-time control instruction to a shore station management service module to support the selective sending of specific service formatting;

(5) according to the input of a human-computer interface, marine business data are sent to a shore station management service module, and the specific business formatting, selection and sending are supported;

(6) and recording main working logs in the running process of the module.

The man-machine management computer realizes network communication with the man-machine interaction server through the network equipment, and realizes man-machine interaction operation.

The time service equipment adopts Beidou-2/GPS dual-mode satellite signals to provide satellite time for the central server, and further provides a time system for the whole subsystem.

A bank-based guard and management system of a VHF frequency band data exchange system, the operation business flow comprises four types of business flow initiated by an external maritime system, business flow initiated by a man-machine management service, business flow initiated by a ship station (or reported regularly), and business flow initiated by a bank station, and the system is specifically designed as follows:

1. traffic flow initiated by external maritime system

The service flows initiated by the external maritime system are all sent to the ship station and are divided into two types which do not need the confirmation of operators and need the confirmation of the operators, and the list of the service flows is shown as follows.

Table 1 list of traffic flows initiated by external maritime systems

The service flow chart is shown in the attached figures 2 and 3 of the specification.

2. Traffic flow initiated by man-machine management service

The service flow initiated by the man-machine management service is divided into a service flow to a ship station, a service flow to a shore station and a service flow to a data management server, and a service flow list is shown as follows.

TABLE 2 traffic flow initiated by Man-machine management service

The service flow chart is shown in the attached figures 4 and 5 of the specification.

3. Traffic flow initiated (or timed) by ship station

The service flow initiated by the ship station (or reported regularly) is all sent to the external maritime system, and the service flow list is shown as follows.

Table 3 list of traffic flows initiated by ship station (or reported regularly)

The service flow chart is shown in the attached figure 6 of the specification.

4. Traffic flow initiated by a shore station

The business flow initiated by the shore station is all sent to the shore-based duty and management system, the main content is to realize the state monitoring of the shore station, including the data retransmission after the temporary interruption of the network connection, and the business flow is as follows.

Table 4 list of traffic flows initiated by a shore station

The service flow chart is shown in the attached figure 7 of the specification.

The shore-based duty-on and management system of the VHF frequency band data exchange system adopts a time slot management mode of a VDES communication system to realize automatic management of communication network time slots for sending custom messages to ship stations by the system by adopting a mode of summarizing and processing data reported by the ship stations in the system. The specific scheme is as follows:

1. and allocating time slots occupied by the timing broadcast to the shore stations accessed by each shore-based guard and management system. And with every 5 minutes as a period, completing the configuration of the time slot occupied by the timed broadcast information of each shore station by adopting an IEC message DLM, and completing the configuration of the time slot of the ship end corresponding to the time slot occupied by the timed broadcast information of each shore station by adopting an IEC message ECB.

2. And counting and recording time slots occupied by all the shore stations accessed by the shore-based guard and management system to form a complete time slot occupation map of each shore station.

3. The shore-based on-duty and management system operator inputs the message sent to the ship station, and the system automatically calculates the required time slot according to the message length.

4. And respectively measuring and calculating the relative distance between the target ship station and each shore station according to the geographical position of the target ship station, and selecting the shore station with the closest relative distance as the target shore station to send a message to the ship station.

5. And automatically reserving the time slot required for sending the message to the ship station according to the calculation result of the required time slot length and the strategy of taking the continuous longest time slot in the rest time slots except the time slot occupied by all the selected shore stations.

6. The shore-based duty and management system sends the time slot required for sending the message to the ship station through the shore station to the selected shore station through the IEC message TSA, and then sends the time slot to the selected shore station through the IEC message VDM, so that the designated ship station is broadcast.

The shore-based duty and management system of the VHF frequency band data exchange system adopts a message queue combined with a system platform authority management technology to realize the hierarchical opening of data to different users.

The message queue is used as the basis of data exchange of all modules in the shore-based watch and management system, so that the message queue becomes the middleware of an upper-layer service module and a bottom-layer data, the response speed of the system and the throughput of the system are improved, and convenience is brought to the standardization aspect of development and upgrading of an application module. And through a message bus, the interactive contents among the modules are converted into a standard XML format for transmission, and the data required to be stored by the modules are unified into standard formatted data for storage.

In the whole life cycle from the system development to the online operation to the operation maintenance, system users can be divided into a maritime management user, a communication management user, a system manager and an application developer according to actual needs. The maritime management user faces to the maritime business, focuses on the operation of the maritime business, opens all functions of the business service module for the system, and displays and controls related functions of the service module for the system. The communication management user mainly focuses on the communication state of the ship and the shore station, and the system opens all functions of the shore station management service module and opens related functions of the system state watching and alarming service module and the system display control service module. The system administrator faces the operation of the shore-based watch and management system, and opens a storage service module for a general administrator, a system state watch and alarm service module, a message queue module and a storage service module for a super administrator. The application developer focuses on system troubleshooting and secondary development for system maintenance and upgrading, and the system opens a message queue module and a storage service module for the system.

TABLE 5 user analysis Table

A bank-based duty and management system of a VHF frequency band data exchange system realizes configuration management operation of relevant elements by operators through clicking of various elements such as an electronic chart shore station, a ship station and the like provided by a system display and control service module, and automatically analyzes and sends corresponding control instructions to the relevant elements through background logic.

The ship station left key operation menu comprises 5 primary menus of 'ship track', 'ship information', 'service message', 'inquiry' and 'display configuration', and each menu is associated with related background service logic.

1. The two-level menu of the ship track comprises two options of track tracking on and track tracking off. It should be possible to support tracking multiple vessels simultaneously.

2. The ship information menu automatically detects whether the target ship is a class A ship or a class B ship according to the information reported by the target ship, and gives corresponding display options. For a class A ship, a secondary menu of 'ship information' comprises two options of 'dynamic information' (ITU messages 1, 2 and 3) and 'static and voyage information' (ITU message 5); for a class B vessel, the two-level menu of "vessel information" includes two options "dynamic information" (ITU message 18) and "static information" (ITU message 24). The system automatically distinguishes A, B types of ships according to ITU messages 3 and 5(A types) and ITU messages 18 and 24 reported by the ship stations.

3. The second-level menu of the 'service message' comprises three options of 'message sending to ship', 'message sending by ship' and 'history message', and all the options comprise corresponding third-level menus. The "send message to ship" is used for the system operator to send addressing messages to the corresponding ship, and the three-level menu comprises three options of "AIS message" (ITU messages 12 and 13), "ASM message" (ITU messages 6 and 7) "VDE message". The function of sending messages to ships is to have the capability of simultaneously sending messages to multiple ships; the 'ship-sent message' is used for receiving and displaying all messages sent by a corresponding ship (to a shore station) by a system, and a three-level menu of the 'ship-sent message' comprises three options of 'AIS messages' (ITU messages 12, 13 and 14), 'ASM messages' (ITU messages 6, 7 and 8) and 'VDE messages', wherein messages recorded in a menu or a dialog box of the 'ship-sent message' are messages which are unread by the system, the read messages are not displayed any more, a yellow prompt lamp appears at a ship icon when the system (corresponding to the shore station) receives a new AIS message, a red prompt lamp appears at the ship icon when the system (corresponding to the shore station) receives a new ASM message, and a green prompt lamp appears at the ship icon when the system (corresponding to the shore station) receives a new VDE message; the historical message is used for displaying the historical message record between the corresponding ship and the system, and the ship can jump to the corresponding interface after clicking.

4. The 'inquiry' secondary menu comprises three options of 'dynamic information', 'static information' and 'UTC time', and the menu automatically detects whether the target ship is a class A ship or a class B ship according to the information reported by the target ship, gives the same display option, and has different background processing logics. For the A-type ship, clicking a dynamic information option to initiate an ITU 15 message inquiry No. 3 message, clicking a static information option to initiate an ITU 15 message inquiry No. 5 message, and clicking an UTC time option to initiate an ITU 10 message inquiry No. 11 message; for the B-type ship, clicking the dynamic information option to initiate an ITU 15 message inquiry message No. 18, clicking the static information option to initiate an ITU 15 message inquiry message No. 24, and clicking the UTC time option to initiate an ITU 10 message inquiry message No. 11. The system subsystem automatically distinguishes A, B types of ships according to ITU 3 messages, ITU 5 messages (A types), ITU 18 messages and ITU 24 messages (B types) reported by the ship stations.

5. The secondary menu of the display configuration comprises two options of track tracking and service message prompting. The 'track following' is used for configuring the ship track display state and comprises two options of 'color configuration' and 'clearing'. "color configuration" is used to configure the color of the ship trajectory and "clear" is used to clear the ship trajectory that has been plotted on the chart. The service message prompt is used for configuring the display states of prompt lamps of service messages and comprises three options of turning on, turning off and setting all the prompt lamps to be read.

The shore station left key operation menu comprises 5 primary menus of 'shore station state', 'service message', 'communication monitoring', 'equipment configuration' and 'display configuration', and each menu is associated with related background service logic. And after the shore station is selected, the coverage range of the shore station is displayed on the chart in a transparent mode.

1. The two-level menu of "land station status" is four options of "basic status", "communication status", "land station report broadcast", "DGNSS broadcast". The "basic state" is used to display basic information of the shore station such as unique identification of the shore station, MMSI number, device type, device vendor, location, network state between the center and the shore station, and the like. Displaying an exclamation mark icon on the shore station icon when the communication state is abnormal, wherein only the shore station icon is in a normal state, and the exclamation mark icon is not displayed; the 'communication state' is used for displaying basic information of the communication state of the shore station such as VDL load, farthest action distance, farthest ship station MMSI and the maximum number of ships, and displaying and configuring a RATDMA switch (in BCE) and a sending condition report switch (in SPO); the 'bank station report broadcast' is used for displaying and configuring broadcasting of ITU message 4, and a dialog box can pop up after clicking. The dialog box comprises switch setting and broadcasting interval setting of the shore station report broadcasting, and displays main contents in the ITU message 4 including last-time transmission time, position accuracy and the like; the "DGNSS broadcast" is used to display and configure the broadcast of ITU message 17, and a dialog box may pop up after clicking. The dialog box includes the on-off setting and the broadcasting interval setting of the DGNSS broadcast, and displays the main contents in the ITU message 17 including the last time of transmission, the latitude and longitude, and the like.

2. The second-level menu of the 'service message' comprises three options of 'broadcasting message to ship', 'received message' and 'historical message', and all the options comprise corresponding third-level menus. The "broadcast message to ship" is used for the system operator to send broadcast messages to all ships within communication coverage of the shore station, and the three-level menu comprises three options of "AIS message" (ITU message 14), "ASM message" (ITU message 8) "VDE message". The function of sending messages to ships is to have the capability of simultaneously sending messages to multiple ships; the 'received message' is used for displaying all messages received by the shore station, and the three-level menu comprises three options of 'AIS message' (ITU messages 12, 13 and 14), 'ASM message' (ITU messages 6, 7 and 8) and 'VDE message', and the messages recorded in the menu or dialog box of the 'received message' are all messages which are not read by the system, and the read messages are not displayed any more. For receiving a new AIS message, a yellow prompt lamp appears at the position of the shore station icon, for receiving a new ASM message, a red prompt lamp appears at the position of the shore station icon, and for receiving a new VDE message, a green prompt lamp appears at the position of the shore station icon; the history message is used for displaying history message records sent and received by the shore station, and can jump to a corresponding interface after clicking.

3. The secondary menu of "communication monitoring" is 5 in total "basic status", "assign mode command" (ITU message 16), "link management (FATDMA)" (ITU message 20), "channel management (for ship station)" (ITU message 22), "group assign command" (ITU message 23). The "basic state" includes 5 options of "basic case", "extended configuration", "timeslot state", "communication state report", "reset", wherein the "basic case" displays basic information of the communication state of the shore station, such as VDL load, farthest range, farthest ship station MMSI, maximum ship number, display and configuration of the ramtdma switch (in IEC message BCE), sending condition report switch (in IEC message SPO), etc., and the displayed information is more detailed than the "communication state" in the "shore station state" option; the 'extended configuration' is used for realizing the function of IEC message BCE sentences; the time slot state is used for displaying the time slot condition in the network by combining with IEC message FSR, TSA and other statements related to the time slot, and the interface can reflect the time slot occupation reservation condition by a graphical interface; the communication state report is used for realizing the function of an IEC message SPO statement; the reset is used for realizing the Restart function in the IEC message CAB statement.

4. The secondary menu of the device configuration is 6 options of basic state, alarm monitoring, network state, identity configuration, peripheral configuration and restart. The "basic state" is used for displaying and configuring basic information of the unique identifier, MMSI number, position, device type, device manufacturer, manufacturer serial number, software version, hardware version, universal base station configuration (IEC message BCF) and the like. The information displayed here should be more detailed than the "base status" under the "shore station status" option. For a system administrator, the system administrator has the right to change the related information, and a general user can only view the unauthorized change. The alarm monitoring is used for realizing the functions of IEC message ADS, ALR and other alarm related statements. The "network state" is used for displaying the connection state between the system and the shore station, and is used for realizing the functions of heartbeat monitoring, the network state of the shore station and network configuration statements. The identity configuration is used for displaying and configuring a user name and a password of the shore station. The peripheral configuration is used for realizing the configuration function of the serial peripheral of the bank station. The restart is used for realizing the Reset function in the IEC message CAB statement.

5. The secondary menu of the display configuration comprises two options of coverage area display and service message prompt. The "coverage area display" is used for configuring the display state of the shore station coverage area, and comprises 3 options of "on", "off" and "color configuration". The service message prompt is used for configuring the display states of prompt lamps of service messages and comprises three options of turning on, turning off and setting all the prompt lamps to be read.

The invention adopts the overall architecture of the central server, the data storage server, the man-machine management computer and the satellite navigation equipment, and realizes the integral integration of the functions of system service processing, data processing man-machine interaction, alarm detection and the like.

Aiming at the problem of switching time slot management between multiple shore stations and multiple base stations and the problem of time slot conflict of automatic broadcast messages and specified condition broadcast messages in a VHF frequency band data exchange system, the invention adopts a mode of summarizing and processing the broadcast data in the system based on each ship station to realize the automatic management of the communication network time slot, and realizes the hierarchical opening of the data to different users and the improvement of the system expansibility by combining a bus technology and a system platform authority management technology.

The invention adopts a mode that all operations of the system are initiated by the electronic chart, and the relevant elements are configured and managed by clicking various elements such as an electronic chart shore station, a ship station and the like provided by the system display and control service module, and the corresponding control instructions are automatically analyzed and sent to the relevant elements through background logic, so that the convenience and the intuition of operators on the management of the complex communication network system are realized, the management configuration and the operation maintenance of the whole VDES system can be realized, and the service operation of the VDES system is supported.

The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Those skilled in the art will recognize that the invention may be practiced without these specific details.

Claims

1. A shore-based guard and management system for a VHF frequency band data exchange system, comprising: the system comprises a central server, a data storage server, a man-machine management computer, time service equipment, alarm equipment and network equipment;

the central server, the data storage server, the man-machine management server and the man-machine management computer are interconnected through network equipment; the central server generates a time synchronization signal provided by a GNSS ephemeris at system initialization and set time according to the satellite GNSS information, carries out time service on a VDES (vertical double-layer orbit) shore station and sends the time synchronization signal to time service equipment; the time service equipment generates time service data and sends the time service data to the central server, the data storage server, the man-machine management server and the accessed VDES shore stations for time synchronization; the central server can receive external maritime business application data, analyze the external maritime business application data, send the analyzed data to the data storage server for storage, and send the analyzed data to the man-machine management server for real-time display; the central server can monitor and collect the working data of the external VDES bank station in real time, extract fault alarm information and judge the system fault condition according to the extracted fault alarm information; if the system has a fault, controlling external alarm equipment to carry out sound, light and short message alarm according to the judged system fault condition; the central server can realize data conversion with the VDES shore stations, perform identity authentication and access authorization on each access shore station, and receive and distribute maritime messages interacted with the VDES shore stations;

the VDES bank station can send the received ship station broadcast information and the bank station state information to the man-machine management server through the central server for display; and sending the data to a business service module for gathering and filtering to obtain the required ship and shore station data;

the man-machine management server can receive the service data sending application of the central server and send the service data sending application to the man-machine management computer, and the approval condition of the man-machine management computer for sending the application is fed back to the service module;

wherein:

the business service module realizes data conversion with the marine business system, forwards the received marine business system data to the shore station management service module, and simultaneously reports the marine business data to the marine business system;

the system state guarding and alarm service module can monitor the network state between the VDES bank station and the bank-based guarding and management system, judge the integrity of the system, namely the fault condition, according to the fault alarm information of the bank station reported by the bank station management service module, and control the external alarm equipment to carry out sound, light and short message alarm according to different levels according to the judged fault condition of the system;

the shore station management service module is used as an interface, data conversion between the shore-based duty and management system and the VDES shore stations is realized, identity authentication and access authorization are carried out on each access shore station, and maritime messages interacted between the VDES shore-based duty and management system and the VDES shore stations are received and distributed;

2. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: and the system state watching and alarming service module monitors network states including on-off, time delay and each section of routing switching states between the VDES bank station and the bank-based watching and managing system.

3. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the central server can perform maritime business management, system state management and time management.

4. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the criterion for judging the integrity of the system, namely the fault condition, is as follows: if no fault code exists in the working data, the system is judged to be intact and has no fault, and if the fault code is judged to be not intact, the system is judged to be faulty.

5. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the shore station management service module can monitor and collect the working data of the external VDES shore station in real time, wherein the working data comprises original message data and chart data stored according to an S57 file format.

6. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the shore station management service module is used as an interface to realize data conversion between the shore-based watch and management system and the VDES shore station, and the data conversion refers to the following steps: the shore-based duty and management system sends a control instruction through the shore station management service module, the control instruction is generated by the man-machine management server, the control instruction is used for controlling the VDES shore station to send marine safety information to the ship station, and the other way of the control instruction is as follows: and the service module receives a control command generated by an external marine service system, and the control command is used for controlling the VDES shore station to send marine safety information to the ship station.

7. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the VDES bank station can send the received ship station broadcast information and the bank station state information to the man machine management server through the bank station management service module for display; and sending the data to a business service module for gathering and filtering to obtain data required by the maritime personnel, wherein the required data comprises: ship track, ship static and voyage information, communication state of a ship, basic working state of a shore station, communication state and broadcast state of a shore station report;

8. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the data storage server, as a data storage and management center of the VDES system, has the following functions:

(1) network communication is realized with other equipment through network equipment;

(2) storing various original message data according to a text format, and storing chart data according to an S57 file format;

(3) receiving and storing data sent by the shore station management service module, the business service module and the system display control service module, and reporting the state to the system state watching and alarming service module;

(4) the business service module is supported to inquire, update, insert and store the stored data items;

9. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the man-machine management server realizes the man-machine interaction service function of the system through the system display control service module, and the function is as follows:

(1) network communication is realized with other devices in the system through the network device;

(2) receiving various data required to be displayed and reported by the shore station management service module, and analyzing, classifying, storing and displaying the data;

(3) receiving a service data sending application or a data state of the service module, sending the service data sending application or the data state to the man-machine management computer, and feeding back an approval condition of a man-machine interface of the man-machine management computer to the service module;

(4) receiving and displaying a system fault state reported by the system state guarding and alarm service module, and supporting a human-computer interface input instruction of a human-computer management computer to relieve an alarm;

(5) according to the input of a human-computer interface of a human-computer management computer, system parameter configuration and real-time control instructions are sent to a shore station management service module, and the selective sending of the required business formatted data is supported;

10. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the traffic flow of the system comprises the following:

(1) the method comprises the following steps that a service flow initiated by an external maritime service system is sent to a VDES shore station through a central server and then sent to a VDES ship station, and the VDES ship station is installed on a ship;

(2) the service flow initiated by the man-machine management server comprises the following steps: the man-machine management server sends the service flow to the ship station, sends the service flow to the shore station and sends the service flow to the data storage server;

(3) service flow initiated by ship station or reported regularly: initiating to an external maritime business system by a ship station;

(4) traffic flow initiated by the shore: the method is initiated to a central server of a VDES shore-based watchman and management system by a shore station.

11. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the VHF frequency band data exchange system is the core of the next generation of international maritime communication, the VDES is a whole set of communication system, consists of a ship station, a shore station and a central management system, can provide data exchange capacity on maritime VHF mobile bands in the global range, and can meet the requirements of all data exchange services between the current ship-to-ship and the ship-to-shore;

12. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the business service module, the system state guard and alarm service module, the shore station management service module and the system time service module in the central server are interconnected through a message queue bus, and the classified opening of data to different users is realized through combining the message queue with the authority setting of the central server, so that the expansibility and the maintainability of the shore base guard and management system facing different users are improved.

13. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: all operations of the user on-shore base guard and management system are initiated through the electronic chart in the man-machine management computer, configuration management operation of the selected elements is achieved through clicking of elements of a shore station and a ship station on the electronic chart provided by a display and control service module in the man-machine management server, and corresponding control instructions of the elements selected by the control points are automatically analyzed and sent to the selected elements through logic prestored in the display and control service module.

14. A shore-based attendance and management system for a VHF band data exchange system according to claim 7, wherein: the display control service module in the man-machine management server has the logic control functions of ship station prestoring, such as ship track tracking, ship information display, ship station service message display, ship station information inquiry and display configuration;

the ship track tracking comprises track tracking opening and track tracking closing functions; the ship information display function automatically detects whether the target ship is a class A ship or a class B ship according to the information reported by the target ship and provides corresponding display options; the ship station service message display function comprises a message sending function, a message display function and a history message display function, wherein the message sending function is used for sending a message to a ship; the ship station information inquiry function comprises three functions of dynamic information inquiry, static information inquiry and UTC time inquiry, and automatically detects whether the target ship is a class A ship or a class B ship according to the information reported by the target ship and provides corresponding display options; the display configuration function comprises a track tracking function and a service message prompting function.

15. A shore-based watch and management system for VHF band data exchange system according to claim 1, wherein: the pre-storage control logic function of the man-machine management server display control service module to the shore station comprises the following steps: the method comprises the steps of shore station state display, service message display, communication monitoring, equipment configuration and display configuration; the shore station state display function comprises a basic state display function, a communication state display function, a shore station report broadcast function and a DGNSS broadcast function; the service message display function comprises three functions of broadcasting messages to ships, displaying received messages and displaying historical messages; the communication monitoring function comprises basic state display, assignment mode command sending, ship station and shore station link management, ship station and shore station channel management and group assignment command sending functions; the device configuration function comprises a device basic state display function, a device alarm monitoring function, a device network state function, a device identity configuration function, a device peripheral configuration function and a device restarting function; the display configuration function comprises a shore station coverage area display function and a shore station service message prompting function.