KR20140144541A - Universal Gateway System for NMEA 2000 - Google Patents

Abstract

The present invention relates to a universal gateway system for NMEA 2000, which enables users to monitor the information of ship status, transmitted through CAN communication network to user′s terminal connected to various communication interfaces and, more specifically, to a universal gateway system for NMEA 2000, comprising a CAN data receiving part which receives NMEA 2000 messages transmitted in a CAN packet from the CAN communication network; and a NMEA 2000 message analysis part which analyzes the NMEA 2000 message and a DB storage part which stores the same in the DB wherein the NMEA 2000 message can be seen while logged on if necessary.

Description

NMEA 2000 Universal Gateway System {Universal Gateway System for NMEA 2000}

The present invention relates to an NMEA 2000 general purpose gateway system, and more particularly, to an NMEA 2000 general purpose gateway system that provides a variety of communication network interfaces desired by a user to monitor the status information of a ship from a near or remote location.

Generally, as shown in FIG. 1, the NMEA 2000 is a communication network technology that supports connection between various input / output devices such as GPS, a weather sensor, a speedometer, an anemometer, and an engine existing in a ship, It is a standard protocol.

The physical layer uses CAN 2.0B (Carrier Sense Multiple Access / Collision Arbitration). The maximum number of connected nodes is 50 physical nodes (252 logical nodes), the maximum transmission rate is 250kbps, and the maximum transmission distance is 200m.

Under the SOLAS Convention, it is imperative to use new navigation communication equipment and certified products conforming to the International Electrotechnical Commission (IEC) standard. Here, the IEC selected NMEA 2000 as a standard network of the SOLAS ship.

The navigation communication equipment includes ECDIS (Electronic Chart Display and Information System), AIS (Automatic Identifier), VDR (VDR), BNWAS (Mission Watch Alarm System) Automatic Radar Plotting Aids) radar.

On the other hand, the demand for the electronic navigation system (e-navigation) in ships has been increasing recently, and e-navigation has been used for the purpose of safe and efficient navigation, It is a global standard for navigational systems that use the device as a whole and systematically.

The NMEA 2000 Gateway, which connects the various sensors and actuators in the ship with various external monitoring devices, supports only a single communication protocol and wired protocol, and independently build / operate the system according to the supplier or developer. And the compatibility of the system is not clear.

In other words, various portable IT devices supporting wireless communication (Wi-Fi, Bluetooth, etc.) have become popular and the demand for ship monitoring solution using wireless has been increasing.

Korean Patent No. 10-1090367 (Registration date November 30, 2011)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for converting the status information of a ship into various message formats of wired / NMEA 2000 general-purpose gateway that can monitor, and develop various supplementary services using state information of ship, connect existing navigation equipment for e-navigation and newly developed navigation equipment and electronic devices. The purpose of the system is to provide.

In order to accomplish the object of the present invention, an NMEA 2000 general purpose gateway system according to the present invention includes a NMEA 2000 general purpose gateway system for monitoring status information of a ship transmitted through a CAN communication network to a user terminal connected through various communication interfaces A gateway system, comprising: a CAN data receiver for receiving an NMEA 2000 message transmitted in CAN packet form from the CAN communication network; A NMEA 2000 message analysis and DB storage unit that analyzes the NMEA 2000 message and stores it in the DB so that the log can be viewed when necessary; A protocol switching unit for performing a switching function with a connected communication interface; An object protocol message generating and transmitting unit for generating a packet for the connected communication interface and transmitting the generated packet to the outside via the corresponding communication interface; A protocol message receiving unit for receiving a protocol message transmitted from a connected communication interface; A protocol message interpretation unit for analyzing the received protocol message; An NMEA 2000 message generation and DB storage unit for generating an NMEA 2000 message based on the analyzed protocol message, storing the message in the DB, and viewing a log when necessary; And a CAN data transmitter for converting the generated NMEA 2000 message into a CAN packet type for transmission.

The protocol switching unit of the present invention performs a switching function with a connected communication interface and may be an Ethernet or a Wi-Fi if Ethernet and Wi-Fi are connected and there is no other communication interface. And transmits the NMEA 2000 message. At the same time, when a plurality of communication interfaces are connected, the communication interface supports the respective communication protocols or supports only one protocol according to the priority order .

The communication interface of the present invention may be an Ethernet communication module, a universal serial bus (USB), a universal asynchronous receiver transmitter (UART), a Zig-Bee communication module, a Bluetooth communication module, a Wi- ) Communication module, a WCDMA (Wideband Code Division Multiple Access) communication module, and an LTE (long term evolution) communication module.

As described above, the present invention is advantageous in that it is possible to monitor the state of a ship in / out of a ship or a remote place by converting the ship condition information into a message form of various wired / wireless communication protocols as needed.

In addition, the present invention is capable of developing various additional services using state information of a ship, and has an advantage that an existing navigation device for implementing an e-navigation can be connected to a newly developed navigation device and an electronic device.

1 is a schematic diagram of a conventional NMEA 2000 gateway system.
2 is a diagram illustrating a configuration of an NMEA 2000 general purpose gateway system according to the present invention.
3 is a diagram illustrating a configuration of an NMEA 2000 general purpose gateway according to the present invention.
4 is a diagram for explaining a process of generating a payload of a communication protocol according to the present invention.
5 is a view showing a ship monitoring screen according to the present invention.
FIG. 6 is a schematic view of a remote vessel management system utilizing Wi-Fi according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a configuration of an NMEA 2000 general purpose gateway system according to the present invention, FIG. 3 is a diagram illustrating a configuration of an NMEA 2000 general purpose gateway according to the present invention, and FIG. FIG. 5 is a view showing a state of a ship monitoring screen according to the present invention, FIG. 6 is a view schematically showing a remote vessel management system utilizing Wi-Fi according to the present invention, and FIG. to be.

2 to 6, the NMEA 2000 general purpose gateway system according to the present invention supports wired communication protocols such as Ethernet, USB, and serial (RS232) through the NMEA 2000 general purpose gateway 100, Wireless communication protocols such as Wi-Fi and Bluetooth are supported, and miniaturization, dustproofing, and moisture-proofing are designed considering the ship environment.

The NMEA 2000 general purpose gateway 100 includes a CAN data receiving unit 110, an NMEA 2000 message analyzing and DB storing unit 112, a protocol switching unit 114, an object protocol message generating and transmitting unit 116, a communication interface 130, A protocol message receiving unit 146, a protocol message analyzing unit 144, an NMEA 2000 message generating and DB storing unit 142, and a CAN data transmitting unit 140.

The CAN data receiving unit 110 receives the NMEA 2000 message in the form of a CAN packet and receives the NMEA 2000 message. The NMEA 2000 message analyzing and DB storage unit 112 stores the NMEA 2000 message And stores it in the DB so that the user can view the log when necessary.

The protocol switching unit 114 performs a switching function to the connected communication interface 130 as needed. For example, if the Ethernet and the Wi-Fi are connected and the other communication interface 130 is not provided, Fi to transmit the NMEA 2000 message. If necessary, the communication interface 130 may be connected to a plurality of the communication interfaces 130 at the same time. At this time, when Ethernet and Wi-Fi are connected at the same time, each communication protocol can be supported simultaneously or only one protocol can be supported according to priority.

The communication interface 130 may include an Ethernet communication module, a universal serial bus (USB), a universal asynchronous receiver transmitter (UART), a Zig-Bee communication module, a Bluetooth communication module, a Wi- ) Communication module, a WCDMA (Wideband Code Division Multiple Access) communication module, and an LTE (long term evolution) communication module.

The destination protocol message generating and transmitting unit 116 generates a packet for a connected communication interface, processes the packet, and operates in the opposite manner during reception. That is, the protocol message receiver 146 receives the protocol message transmitted from the connected communication interface, and the protocol message analyzer interprets the received protocol message.

The NMEA 2000 message generation and DB storage unit 142 generates an NMEA 2000 message based on the analyzed protocol message and stores the NMEA 2000 message in a DB so that a log can be viewed when necessary. The generated NMEA 2000 message is converted into a CAN packet and transmitted.

The NMEA 2000 data is received through the CAN physical layer, analyzes the received NMEA 2000 message, and stores it in the gateway DB for logging of the message.

It is possible to use a plurality of communication interfaces according to the necessity and switch for selecting a communication protocol to be connected to the outside is designed to be both a hardware type and a software type desirable.

In the present invention, as shown in FIG. 4, a message of the communication protocol is encapsulated by encapsulating the message of the NMEA 2000 into a payload of the corresponding communication protocol message.

Various types of wired and wireless client terminals such as a user terminal, for example, a cellular phone, a video phone phone, a smart phone, a notepad, a laptop computer, a tablet computer, Lt; / RTI >

Such a client terminal can provide a broadband communication service to a subscriber by interfacing with a network with a broadband connection, and it is possible to use a third generation based on WCDMA (Wideband Code Division Multiple Access), a fourth generation based on LTE (long term evolution) It is possible to provide a broadband communication service in a wireless environment supporting the Internet.

Also, the client terminal can provide a short-range communication service by interfacing with a network in a short-distance connection. The local area communication service at this time may be a wireless local area communication service such as Ethernet or Wi-Fi.

A necessary NMEA 2000 data payload is generated in the corresponding client terminal (PC, smart phone, tablet, etc.) as shown in FIG. 4, and a corresponding protocol data packet is generated based on the generated NMEA 2000 payload .

The NMEA 2000 general gateway receives the corresponding protocol data packet, analyzes the received protocol message to extract the NMEA 2000 message, stores the extracted NMEA 2000 message in the gateway DB, and transmits the extracted NMEA 2000 message to the NMEA 2000 message via the CAN interface 2000 network.

In addition, since the present invention provides scalability of the NMEA 2000 as shown in FIG. 5, the NMEA 2000 is limited to a length of 200 m and a maximum of 50 nodes, for example, logically, to 252, A bridge and a gateway for connecting subnetworks between devices installed separately by group are provided.

Providing a vessel management solution for in-vessel and remote vessels using terminals supporting wireless communication, it is possible to provide a system for monitoring and managing the in-vessel devices through a web browser, The Nomadic device can provide a remote real-time monitoring service using, for example, a notebook, a smart pad, or a tablet PC.

As shown in FIG. 6, by providing a remote real-time vessel management solution for a plurality of vessels, it is possible to transmit a plurality of vessel information anchored in a port to a central management center and an authorized user via a Wi-Fi AP, Can provide a real-time monitoring service utilizing the real-time monitoring service.

As described above, according to the present invention, it is possible to monitor the condition of a vessel in / out of a ship or a remote place by creating a new service using the NMEA 2000 general purpose gateway, and to remotely monitor a user of an expensive ship, It is possible to provide new services such as maintenance service for these vessels by utilizing the function of remote monitoring of the status of each vessel in the port where the vessels are anchored.

Further, the present invention provides a high-value-added IT convergence-type vessel by providing a connection function between an existing navigation device for implementing an e-navigation and a newly developed navigation device and an electronic device.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. , Alteration, substitution or addition, etc.

100: NMEA 2000 general purpose gateway 110: CAN data receiving section
112: NMEA 2000 message analysis and DB storage unit 114: Protocol switching unit
116: destination protocol message generation and transmission unit 120: database (DB)
130: Communication interface 140: CAN data transmitter
142: NMEA 2000 message generation and DB storage unit 144: Protocol message interpretation unit
146: protocol message receiver

Claims (3)

1. An NMEA 2000 general purpose gateway system for monitoring status information of a ship transmitted through a CAN communication network to a user terminal connected through various communication interfaces,
The NMEA 2000 general purpose gateway comprises: a CAN data receiving unit for receiving an NMEA 2000 message transmitted in the CAN packet form from the CAN communication network;
A NMEA 2000 message analysis and DB storage unit that analyzes the NMEA 2000 message and stores it in the DB so that the log can be viewed when necessary;
A protocol switching unit for performing a switching function with a connected communication interface;
An object protocol message generating and transmitting unit for generating a packet for the connected communication interface and transmitting the generated packet to the outside via the corresponding communication interface;
A protocol message receiving unit for receiving a protocol message transmitted from a connected communication interface;
A protocol message interpretation unit for analyzing the received protocol message;
An NMEA 2000 message generation and DB storage unit for generating an NMEA 2000 message based on the analyzed protocol message, storing the message in the DB, and viewing a log when necessary; And
A NMEA 2000 general purpose gateway system including a CAN data transmitter for converting the generated NMEA 2000 message into a CAN packet form for transmission.
The method according to claim 1,
The protocol switching unit performs a switching function with a connected communication interface. If the Ethernet and the Wi-Fi are connected and there is no other communication interface, the protocol switching unit may be configured to use either Ethernet or Wi-Fi The NMEA 2000 message is transmitted by selecting a communication interface, and when a plurality of communication interfaces are connected at the same time, each communication protocol is supported at the same time or only one protocol is supported according to a priority order. Gateway system.
3. The method according to claim 1 or 2,
The communication interface may include an Ethernet communication module, a universal serial bus (USB), a universal asynchronous receiver transmitter (UART), a Zig-Bee communication module, a Bluetooth communication module, a Wi- , A WCDMA (Wideband Code Division Multiple Access) communication module, and an LTE (long term evolution) communication module.

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