TWI592911B - Maritime distress notification method - Google Patents

Description

Maritime distress notification method

The invention relates to a method for emergency notification and landing return when a ship is in distress at sea, in particular to a long-distance wireless transmission notification method using mobile communication technology (3G, 4G) combined with marine geographic information system.

In recent decades, with the continuous development of navigation technology, Global Maritime Distress and Safety System (GMDSS), ECDIS, Global Position System (GPS), Automatic Radar Plotting Technologies such as Aids, ARPA)/Radar (Radar) have been widely used in Vessel Traffic System (VTS). The maritime community has long focused on improving and improving the performance of individual navigation devices in international commercial ports, which in turn has shifted to radio navigation, surveillance, and control VTS, and has evolved from semi-automated navigation systems to fully automated ocean information integration systems.

Because Taiwan is surrounded by the sea and the natural environment is superior, the coastline is very developed and surrounded by coral reefs. It is rich in marine fishery resources. There are many fishing boats in the harbor, making fishery resources an important economic activity and civilian production industry in Taiwan. However, fishing shipwreck accidents have been happening all the time. According to the second article of China's "Danger Prevention Law", "Shipwreck" is one of the major disasters of our government agencies. As for the definition of "seawreck" by Chinese government agencies, According to the current "Implementation Rules for Disaster Prevention Law" issued by the Ministry of the Interior and the "Shipwreck Disaster Prevention Business Plan" formulated by the Ministry of Communications under the "Disaster Prevention and Control Law", the shipwreck is defined as: ship failure, sinking, Stranding, collision, fire, explosion, leakage or other very serious accidents involving ships, crew or passenger ships.

Due to the limitations of space and facilities on board, Taiwan’s small fishing vessels are unable to install the relevant satellite systems. At present, mobile phones are limited by the restrictions of the base stations, and the distance of reception at sea is limited. Therefore, small fishing boats are currently lacking safety notifications. System, it is urgent to establish a safety notification system for small fishing vessels.

The main object of the present invention is to provide a maritime distress notification method using current mobile communication technology combined with a marine geographic information system, thereby constructing a low-cost and small-sized security early warning and rescue communication mechanism, which is suitable for general obstacles on board space and Small fishing boats and seesaws with limited facilities.

The secondary object of the present invention is to construct a platform for fishing vessel positioning, drawing and long-distance wireless transmission passages, thereby maintaining the navigation safety of small vessels.

In order to achieve the above purposes, the present invention mainly installs a mobile communication system and a marine geographic information system on a plurality of ships and a shore station, so that communication links can be established between the plurality of ships and the shore stations, and the plurality of ships are solved by the marine geographic information system. Relative position and distance from the shore.

The method for returning a maritime distress notice according to the present invention comprises: searching for a ship within a set distance range by a target ship, and placing all the ships in the range into the above marine geographic information system to establish a mobile communication network; the target ship is selected according to the departure time range. One of the inner vessels serves as a relay ship to establish a communication connection; the relay ship repeatedly establishes a plurality of relay points according to the conditions of the set distance and the escape time until the target ship and the shore are completed. The distress transmission path and the establishment of a return transmission path; the target ship continuously transmits a distress message within a set period, and transmits the distress message to the bank through the distress transmission path established by the plurality of relay ships The above-mentioned shore station receives the above-mentioned distress message and transmits a return message to the target ship through a return transmission path established by a plurality of relay ships.

Wherein, when the above marine geographic information system cannot find any ship that can be used as a relay point within the set distance range, it will return to the previous relay ship to re-search and establish a connection with another ship; When the latitude and longitude of the relay ship exceeds the above-mentioned shore station, the target ship will re-search to establish the above-mentioned distress transmission path and the return transmission path. In addition, when the above escape time is insufficient, the target ship or the relay ship will re-search for the relay point to establish a new distress transmission path and a return transmission path.

In a preferred embodiment, the set distance is 20 nautical miles, and the marine geographic information system is calculated by using one of the MGIS calculus equations or the GA calculus equation.

The invention is characterized in that a mobile communication network is established between a plurality of ships navigating at sea, and when a ship is accidentally killed, the marine geographic information system and the mobile communication system will search and filter to establish a relay ship to form a distress transmission path and return. The transmission path, so that the shore station can know the location and situation of the target ship's distress, and the follow-up emergency rescue procedure will be carried out by the shore station, and the target ship will be rewarded and reported, which is suitable for small fishing boats and seesaw vessels that generally hinder the space and facilities restrictions on board. .

1 is a flow chart of a method for reporting maritime distress in accordance with the present invention; FIG. 2 is a schematic diagram of establishing a relay point using an MGIS calculus equation according to the present invention; and FIG. 3 is a schematic diagram of establishing a relay point using a GA calculus equation according to the present invention.

For a better understanding and understanding of the structure, the use and the features of the present invention, the preferred embodiments are described in detail with reference to the drawings as follows: the invention is mainly in the A mobile communication system and a Marine Geographic Information System (MGIS) are installed to enable communication between multiple ships and shore stations, and the marine geographic information system solves multiple ships and shore stations. Vessel dynamics and mobile relay communication networks.

The above-mentioned mobile communication system is set as the fourth generation of mobile phone mobile communication technology standards (abbreviated as 4G); and the above marine geographic information system is combined with the marine image and geographic information system (Geographic Information System, GIS)'s attribute database provides real-time ship monitoring functions. It uses the maximum relative speed and relative azimuth between the fishing vessel and the merchant vessel as the spatial reference value. It combines the various escapes of various fishing gears and fishing methods for the time reference. value.

However, the aforementioned mobile communication system is for illustrative purposes only and is not limited, that is, the above mobile communication system may also adopt the previous 3G mobile communication technology standard or the future 5G mobile communication technology standard.

Among them, the above marine geographic information system integrates the traditional steps of digitizing the digital chart, constructing the converted spatial data and establishing the attribute database, and the above-mentioned traditional chart digitalization uses manual methods to record each chart in words. The manual drawing tool is drawn into a digital map of the ocean through a digital version, a computer and a plotter, and uses the system software of the Arc View geographic information system as a layer analysis and database management operation.

The above-mentioned construction conversion space data system emphasizes the stacking relationship of each object in the figure. When the layer is nested, it is necessary to be able to identify the position and directionality of each object and the connection of the surrounding objects, and the spatial data is divided into three types. Form: Point, Line, Polygon.

The establishment of the above attribute database includes: electronic chart, marine environment data, ocean current (surface current) data, tide current data, route channel data, port facilities data, navigation aids, navigation data, current situation information, real-time dynamic information of the port, shipwreck Data bank, weather forecast data, historical meteorological data, land bank database, chart water depth database, important road database, lamp float database, etc.

After the relevant attribute data is collected, the related data table is established in the marine geographic information system. Each picture sign (point, line, surface) has its special meaning, and the latitude and longitude position is accurately indicated by the function of the marine geographic information system. Digitalized Taiwan's chart.

Referring to FIG. 1 , the maritime distress notification method of the present invention comprises: (A) searching for a ship within a set distance range by a target ship, and placing all the ships in the range into the above marine geographic information system to establish a mobile communication network. (B) The above-mentioned target ship establishes a communication connection as one of the ships in the selected range according to the departure time; (C) the above-mentioned relay ship repeatedly establishes a plurality of conditions according to the above-mentioned set distance and escape time conditions. a relay point until the establishment of a distress transmission path and a return transmission path between the target ship and the shore; (D) the target ship continuously transmits a distress message within a set period, and transmits the distress message through the plural The distress transmission path established by the relay ship is transmitted to the above-mentioned shore station; (E) The above-mentioned shore station receives the above-mentioned distress message and transmits a return message to the target ship through a return transmission path established by a plurality of relay ships.

The above marine geographic information system adopts one of MGIS calculus equations or GA (Genetic Algorithm) calculus equations, wherein the MGIS calculus equation is a known position of the shore station AIS center, and determines the relay information transmitted by the next relay station. The GA calculus equation is based on the direction of the communication range around the relay station. It is estimated whether the designated mobile relay communication station can be used as the next relay station. After the final selection, the data is continuously transmitted until it reaches the shore AIS center. In addition, the above set distance is 20 nautical miles, and the above set period is 30 seconds to send a distress message.

When the above marine geographic information system cannot find any ship that can be used as a relay point within the set distance, it will return to the previous relay ship to re-search and establish a connection with another ship; in addition, when returning to the previous one When the latitude and longitude of the ship exceeds the above-mentioned shore, the above-mentioned target ship will re-search for the above-mentioned distress transmission path and return transmission path.

In addition, when the above-mentioned escape time is insufficient, the above-mentioned target ship or relay ship will also search for the relay point again to establish a new distress transmission path and return transmission path, thereby ensuring that the relay ship can escape the set distance. The connection will still be automatically re-established so that the above-mentioned shore station can still communicate with the above-mentioned target ship.

Furthermore, the above-mentioned distress message is sent by the above-mentioned target ship, including the original ship information (such as: ship name, longitude, latitude, time, ship status and notes), and finally, when the above-mentioned shore station receives the transmission through the plurality of relay ships The last distress message, at this time, the last distress message contains the original ship information, a plurality of relay data (such as ship name, longitude, latitude, relay time, relay station escape time and notes, etc.).

After the subsequent shore station determines that the mobile relay network is still complete and transmitable according to the escape time calculation of each relay station, the confirmation return report is sent to the target ship, and the return message includes the land data (eg, name, longitude, latitude, reception time, Status confirmation and notes, etc.).

Referring to Figure 2, when the above-mentioned target ship encounters a sea problem, the target ship will send a distress message to the surrounding ship through the MGIS algorithm, and subsequent fishing boats will confirm whether the distress call is received, if no ship receives it. In case of distress call, the distress message will be continuously sent by route B until another ship receives the call. When the ship receives the distress call, the ship will be used as a relay point to receive the distress message of the preceding ship and send other relay ships. And the ship's message; when the relay ship has not yet contacted the shore station, the relay point will be established by route A.

When the target ship establishes multiple relay points to be able to contact the shore station, the shore station will calculate the data of all ships to calculate whether the return path is still in the escape time. If it is not within the escape time, the shore station will not be able to transmit the return. The message is given to the target ship, and the target ship will re-send the distress message to establish a new distress transmission path. However, if the escape time is sufficient, the shore station will provide the return message to the target ship by the same return transmission path to achieve the notification and return of the distress. Let the shore station further assist in the search and rescue of ships in distress.

Referring to Figure 3, when the target ship encounters a sea problem, the target ship will send a distress message to the surrounding ship through the GA algorithm, and will search for the ship within 20 nautical miles of each other between the target ship and the land position. To establish a relay point, if there is no ship within 20 nautical miles, the signal will continue to be sent by path A until a complete connection can be established.

Finally, the equipment used in the marine distress notification of the present invention includes a marine geographic information system, a radio transceiver, a smart transceiver control chip, a transceiver antenna, a GPS module and an antenna, and a display screen. The above marine geographic information system is used to display the vessel dynamics and the mobile relay communication network; the above wireless The electrical transceiver is used for transmitting and receiving signals and information between the target ship and the relay ship and to the shore; the smart transceiver control chip is used for the MGIS calculation and the GA calculation of the ship information and the calculation escape time indicator and the related mobile relay network. Management and assignment; the transceiver antenna is used for receiving and transmitting information by the transceiver; the GPS module and the antenna are used for calculating the position and speed of the target ship and the relay ship; the display screen is used to display the smart radio relay station to establish the distress Notification and return information.

The above-mentioned embodiments are merely intended to be illustrative of the present invention and are not intended to limit the scope of the invention, and the various modifications and modifications made by those skilled in the art in accordance with the scope of the invention and the description of the invention are still It is included in the scope of the following patent application.

no.

Claims (6)

A method for reporting maritime distress, in which a mobile communication system and a marine geographic information system are installed in a plurality of ships and a strait, so that communication links can be established between the plurality of ships and the shore, and the marine geographic information system is used to solve the plurality of ships and shores. The relative position and distance between the stations, the method comprises: A. searching for a ship within a set distance range by a target ship, and placing all the ships in the range into the above marine geographic information system to establish a mobile communication network; The above-mentioned target ship establishes a communication connection as one of the ships in the selected range according to the departure time; C. The above-mentioned relay ship repeatedly establishes a plurality of relay points according to the conditions of the set distance and the escape time, until The above-mentioned target ship and the shore station complete the establishment of a distress transmission path and a return transmission path; D. the target ship continuously transmits a distress message within a set period, and the distress message is established through the plurality of relay ships. The distress transmission path is transmitted to the above-mentioned shore station; E. the above-mentioned shore station receives the above distress message and will return The message is transmitted back to the target ship through the return transmission path established by the plurality of relay ships. According to the maritime distress notification method of claim 1, wherein the set distance is 20 nautical miles. According to the maritime distress notification method described in claim 1, wherein the marine geographic information system is calculated by using one of the MGIS calculus equations or the GA calculus equation. According to the maritime distress notification method according to claim 1, wherein when the marine geographic information system does not find any ship that can be used as a relay point within a set distance, it will return to the previous relay ship and search again. Establish a connection with another ship. According to the maritime distress notification method of claim 4, wherein when the latitude and longitude of the returned previous relay ship exceeds the above-mentioned land, the target ship will re-search to establish the above-mentioned distress transmission path and the return transmission path. According to the maritime distress notification method described in claim 1, wherein when the above-mentioned escape time is insufficient, the target ship or the relay ship will re-search for the relay point to establish a new distress transmission path and a return transmission path.