KR20220162523A - A Development of Automatic Safety Navigation Support Service Providing System for Ships - Google Patents

Abstract

The present invention relates to an automatic safe sailing support system for a ship. The automatic safe sailing support system for a ship uses GPS, AIS, and first wireless communication equipment installed on a user ship to notify other ships which are small and medium ships in the vicinity of a collision risk by using second wireless communication equipment on the other ships and comprises: a location message processing module receiving location information of the user ship through the GPS, and receiving the locations of the other ships located in the vicinity of the user ship through the AIS to process the locations; a collision risk evaluation module analyzing a stepwise risk in accordance with the distance between the user ship and the other ships through the location message processing module; an automatic voice synthesis control module generating a voice synthesis message in accordance with the stepwise risk analyzed through the collision risk evaluation module; and a wireless communication control module outputting the voice synthesis message synthesized through the automatic voice synthesis control module to the first wireless communication equipment and transmitting the voice synthesis message to the second wireless communication equipment. Accordingly, a danger on the sea is identified in advance for safe sailing of a ship, and other ships in the vicinity are notified of a collision risk through voice synthesis message transmission without intervention of people to prevent collision accidents.

Description

A Development of Automatic Safety Navigation Support Service Providing System for Ships}

The present invention relates to an automatic safety navigation support system for ships, and more particularly, to identify maritime hazards in advance for the safe navigation of ships, and informs other ships of the risk of collision through the transmission of synthesized voice messages without human intervention. It relates to an automatic safety navigation support system for ships that can prevent accidents in advance.

In general, in the case of large ships such as tens or hundreds of tons of merchant ships, cargo ships, passenger ships, etc., most of them are equipped with an automatic identification system (AIS) adopted by the International Maritime Organization to prevent marine accidents. These AISs are mandated to be installed on large ships engaged in international or domestic voyages. In this way, AIS applied to large ships is equipped with sensors such as gyro compass and speed log to provide time, ship position, navigation data, etc., and the data input from the sensors and navigation related data It transmits data together, receives information from other vessels and the Vessel Traffic Service (VTS), and outputs it to the monitor, allowing the dynamics between ships or between ships in the Vessel Traffic Service (VTS) to be grasped.

The prior art to which such technology is applied is a vessel automatic identification system ( AIS interface unit for receiving in conjunction with AIS); a process unit for calculating collision avoidance information based on the fixed information and change information included in the AIS information of the own vessel and the fixed information and change information included in the received AIS information of another vessel; and the AIS information of the own ship and other vessels and at least a part of the collision risk prediction information calculated by the process unit are displayed on the electronic chart, and the other vessel scheduled to enter the collision risk range at the expected entry time is displayed on the electronic chart. A technology including; an electronic chart unit that is identifiable with other ships on the display is known.

In the case of AIS used in this prior art, it is generally used in large ships, but since the system is expensive equipment, it has a disadvantage that it is difficult to apply it to small and medium-sized ships. Accordingly, small and medium-sized ships are mainly equipped with very high frequency-digital selective calling (VHF-DSC) or single side band (SSB) equipment. In spite of various countermeasures, such as making it mandatory to mount various safety support equipment on small and medium-sized ships, the number of ship accidents caused by small and medium-sized ships is still not reduced. Therefore, there is a need for a technology capable of sending signals to prevent collisions between ships without having AIS in small and medium-sized ships.

Korea Intellectual Property Office Registration Patent No. 10-1800453

The present invention has been devised to solve the above problems, and for the safe navigation of a ship, it is possible to identify maritime hazards in advance and notify other ships of the risk of collision through the transmission of a synthesized voice message without human intervention to prevent collision accidents. It is to provide an automatic safety navigation support system for ships that can prevent it in advance.

The above purpose is to use the GPS, AIS, and first wireless communication equipment installed on the ship to inform other vessels, which are small and medium-sized ships, of the collision risk using the second wireless communication equipment installed on the other vessel. a location message processing module for receiving location information of the vessel through the GPS and receiving and processing the location of the other vessel located around the vessel through the AIS; a collision risk evaluation module that analyzes a risk level in each step according to the distance between the own vessel and the other vessel through the location message processing module; an automatic speech synthesis control module for generating a speech synthesis message according to the level of risk analyzed by the collision risk evaluation module; and a wireless communication control module outputting the speech synthesis message synthesized through the automatic speech synthesis control module to the first wireless communication equipment and transmitting the message to the second wireless communication equipment. Accomplished by a support system.

Here, the automatic voice synthesis control module synthesizes the bearing and distance information between the own vessel and the other vessel calculated through the location message processing module and the level of risk determined through the collision risk evaluation module to generate a voice synthesized message. Preferably, the wireless communication control module activates (ON) or stops (OFF) the first wireless communication equipment and the second wireless communication equipment.

As described above, according to the present invention, maritime hazards can be identified in advance for the safe navigation of ships, and collision risks can be prevented in advance by informing other ships of the collision risk through the transmission of synthesized voice messages without human intervention. effect can be obtained.

1 is an explanatory diagram of an automatic safety navigation support system for ships according to an embodiment of the present invention;
2 is an explanatory diagram showing the distance according to the degree of risk by stage between the own ship and other ships;
3 is a photograph showing a GPS, AIS receiver and VHF equipment according to an embodiment,
4 is a test window of the automatic safety navigation support system for ships,
5 is a photograph of the laboratory in which the test was conducted,
6 to 8 are photos tested in the field,
9 is a photograph confirming that a voice synthesized message is transmitted to a VHF ship radio mounted on a ship.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. Since the accompanying drawings are only examples shown to explain the technical idea of the present invention in more detail, the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is an explanatory diagram of an automatic safety navigation support system for a ship according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the distance between a own vessel and another vessel according to the degree of risk by stage, and FIG. 3 is a GPS and AIS receiver according to an embodiment and VHF equipment, Figure 4 is a test window of the automatic safety navigation support system for ships, Figure 5 is a picture of the laboratory in which the test was conducted, Figures 6 to 8 are pictures tested in the field, Figure 9 is This is a picture confirming that a voice synthesized message is being transmitted to the VHF ship radio mounted on the ship.

In the case of large ships, to prevent collisions with nearby ships, GPS (global positioning system), which can determine the user's current location by receiving signals sent to satellites, and automatic vessel identification that confirms information on nearby ships It is equipped with equipment such as Automatic Identification System (AIS), marine traffic control system, or wireless communication equipment for voice communication with nearby ships. When another large ship comes within the collision risk range around such a large ship, a danger signal can be sent to the AIS installed in the large ship corresponding to the other ship to prevent collision between the own ship and other ships. However, if the other ship is a small or medium-sized ship rather than a large ship, there is a problem that the danger signal cannot be sent from the own ship to the other ship because the AIS corresponding to the expensive equipment is not installed.

Therefore, it is an object of the present invention to provide a technology capable of sending a danger signal to small and medium-sized ships without AIS installed using the automatic safety navigation support system for ships according to the present invention.

The automatic safety navigation support system 10 for ships according to the present invention uses GPS, AIS, and the first wireless communication equipment 20 installed on the own ship (1, own ship) to use other ships (2 , target ship) using the second wireless communication equipment 30 installed on the other ship 2 to inform the collision risk, as shown in FIG. 1, the location message processing module 100, collision risk evaluation module ( 200), an automatic voice synthesis control module 300 and a wireless communication control module 400.

The location message processing module (100, GPS/AIS message processing module) receives location information of the vessel (1) through the GPS installed in the vessel (1), and receives the location information of the vessel (1) through the AIS installed in the vessel (1). Corresponds to a configuration for receiving and processing the position of another ship 2 located in the periphery. In detail, through the location message processing module 100, the position information of the own vessel 1 is obtained through GPS for receiving the position of the own vessel 1 based on serial communication, and the location of other vessels 2 around it through AIS. After receiving and processing the information, the bearing and distance between the own ship (1) and the other ship (2) are calculated by linking the own ship location information and the other ship location information using the processed data.

In this way, after calculating the distance and bearing between the own vessel 1 and the other vessel 2 through the location message processing module 100, the corresponding information is output as a voice synthesis message through the automatic speech synthesis control module 300 to be described later. .

At this time, the GPS and AIS installed in the vessel 1 are interlocked and message processing is performed based on IEC 61162-1/2 (NMEA 0183), an international standard for ship navigation communication equipment interface. That is, data is transmitted through the RS-422 serial communication interface (4800 bps, no pari show one stop bit) defined in the corresponding standard. Received data is generally called a sentence, and the message structure of the sentence is defined by a formatter. Among tense format specifiers (GGA, GLL, RMC, etc.), the RMC (recommended minimum specific GNSS data) message is processed to extract location information such as latitude and longitude of own ship (1). In addition, among message IDs 1 to 27 in VDM (AIS VHF data-link message), which is a format designator received from AIS, IDs 1 to 3 (class A) and 18 (class A) related to position reports B) is used to obtain other line location information.

The collision risk evaluation module (200, collision risk analysis module) is a configuration that analyzes the risk by stage through the location message processing module 100, and the ship (1) through the location of the ship (1) and the location of the other ship (2) The calculated information of the distance and direction between the ship and the other ship 2 is received through the location message processing module 100, and the risk level is analyzed in each step through the distance and direction. Since the other ships (2) are small and medium-sized ships with better maneuverability than large ships, the criterion is applied so that the collision risk distance is closer than that of large ships. At this time, the calculation of the distance between the two points corresponding to the own ship (1) and the other ship (2) should minimize distortion by considering the characteristics of the round earth, rather than calculating the distance between planes. Therefore, the distance between the own ship 1 and the other ship 2 can be implemented using Mercator's projection/meridional parts, which are widely applied in electronic chart-related systems such as ECDIS.

The distance corresponding to the staged risk of the own ship 1 and the other ship 2 is divided into a total of five stages from stage 0 to stage 4, as shown in FIG. Level 0 is that the distance between the own vessel (1) and the other vessel (2) exceeds 2 nautical miles (NM) and corresponds to a normal state. don't This is because if the voice synthesized message is broadcast to other ships 2 separated by more than 2 nautical miles, there is a possibility of affecting the operation of other ships 2 that are far away or other ships 2 in the vicinity in areas with relatively high traffic volume. .

Next, step 1 is a state of attention, with a 1.5 to 2 nautical mile gap between the own ship (1) and another ship (2), and step 2 is a state of 1 to 1.5 nautical miles in a warning state. applicable Level 3 is a serious state, with an interval of 0.5 to 1 nautical mile, and level 4 is an extremely serious state, in which the distance between the own ship (1) and the other ship (2) is less than 0.5 nautical miles, and corresponds to a very close state.

The automatic voice synthesis control module (300, automatic TTS control module) is configured to generate a voice synthesis message according to the level of risk analyzed by the collision risk evaluation module 200, and the interval between the own ship (1) and the other ship (2) Different synthesized voice messages are generated according to the level of risk subdivided into stages 0 to 4 through

The automatic voice synthesis control module 300 voices the bearing and distance information between the own vessel 1 and the other vessel 2 calculated through the location message processing module 100 and the level of risk determined through the collision risk evaluation module 200 Synthesized and outputs a voice synthesized message, through which the crew members of the own ship (1) and other ships (2) can check accurate and detailed information. This voice synthesized message corresponds to the basic sentence frame, "Our ship is approaching your ship at a distance of X miles in the direction of Y, so please OO." After substituting the warning in step 4 to OO, it synthesizes and outputs the voice.

As shown in the collision risk (CR) in Table 1, the risk level according to the distance between the own ship (1) and the other vessel (2) is divided into a total of five levels from level 0 to level 4, and the distance corresponding to each level Define and apply criteria to analyze risk and evaluate collision risk by stage.

crash
risk situation Distance (NM) synthesized voice message 0 usually more than 2 - normal none One Attention 1.5 to 2 ~ Please note. caution ~ caution. 2 Note 1 to 1.5 ~ Please note. warning ~ warning. 3 caution 0.5 to 1 ~ Please note. serious ~ serious. 4 serious less than 0.5 ~ Please be very careful. extremely serious ~ extremely serious.

When the risk level for each step is analyzed through the collision risk evaluation module 200, a voice synthesized message of the comment shown in Table 1 is generated according to the risk level. At this time, either Korean or English is selected for the voice synthesis message, or both Korean and English are voice synthesized according to the case, so that the message can be delivered to other ships.

Here, it is preferable to use TTS (text to speech) for the automatic speech synthesis control module 300 that generates the speech synthesis message. TTS is a method of realizing human voice through a computer program, and almost all words and sentences are voiced. Since can be easily implemented, the corresponding information is received according to the degree of risk analyzed through the collision risk evaluation module 200, and a synthesized voice message is generated.

The wireless communication control module (400, VHF control module) outputs the voice synthesis message synthesized through the automatic voice synthesis control module 300 to the first wireless communication equipment 20 and transmits it to the second wireless communication equipment 30. With the configuration, it also serves to operate (ON) or stop (OFF) the first wireless communication equipment (20).

In the usual situation where the other ship 2 where the risk of collision is detected is not found around the own ship 1, it exists in a state where the first wireless communication equipment 20 is turned off through the wireless communication control module 400, and then the other ship ( 2) When approaching within the collision risk range of the own vessel 1, the wireless communication control module 400 receives a signal from the collision risk evaluation module 200 and turns on the first wireless communication equipment 20. Thereafter, when the first wireless communication equipment 20 is operated and transmission of the synthesized voice message is completed, the first wireless communication equipment 20 is turned OFF again through the wireless communication control module 400 .

In some cases, the wireless communication control module 400 operates (ON) or stops (OFF) the first wireless communication equipment 20 of the own ship 1 as well as the second wireless communication equipment 30 of the other ship 2. can also be controlled. That is, the wireless communication control module 400 can control ON or OFF the first wireless communication equipment 20 and the second wireless communication equipment 30 at the same time.

In this way, after turning on the first wireless communication equipment 20 and the second wireless communication equipment 30, the synthesized voice synthesized message through the automatic voice synthesis control module 300 is output to the first wireless communication equipment 20 and It is transmitted to the second wireless communication equipment (30). In the case of other ships (2), which are small and medium-sized ships, unlike the private ship (1), which is a large ship, they do not include AIS and are mainly equipped with only the second wireless communication equipment (30) corresponding to a radio, and such second wireless communication equipment (30) Use to notify the crew members of the other vessel (2) of the risk of collision. At this time, a voice synthesis message is synthesized through the automatic voice synthesis control module 300 according to the level of risk according to the distance between the own ship 1 and the other ship 2, and the synthesized message is not only sent to the other ship 2, but the ship ( 1) A voice synthesized message is also output to the ship 1 using the first wireless communication equipment 20 so that the sailors present in the ship can hear it.

In detail, the wireless communication control module 400 is controlled through three types of commands, such as PTT ON or OFF, output 1W or 25W, and channels 1 to 99 based on serial communication. Therefore, after the voyage safety support voice synthesized message is determined according to the analyzed level of risk, the wireless communication control module 400 switches the first wireless communication equipment 20 and the second wireless communication equipment 30 to the ON state to synthesize Allows voice synthesized messages to be broadcast. At this time, when the first wireless communication equipment 20 and the second wireless communication equipment 30 are kept ON for a short period of time, there may be a situation in which communication is cut off while transmitting a synthesized voice message, and after maintaining sufficient spare time, voice Even if the transmission of the synthesized message is finished, if it is not returned to the OFF state, there is a possibility of interfering with other ships' communication. Accordingly, when transmission of the synthesized voice message is completed, a flag variable is set to control the first wireless communication equipment 20 and the second wireless communication equipment 30 to return to the OFF state.

Here, the first wireless communication equipment 20 and the second wireless communication equipment 30 are preferably very high frequency-digital selective calling (VHF-DSC), which are essential to small and medium-sized ships. It is not limited to this.

As described above, an embodiment of testing the automatic safety navigation support system for a ship according to the present invention will be described in detail as follows.

<Example>

As shown in FIG. 3 (a), the receiving equipment was configured in the laboratory, and an AIS receiver and GPS were installed in an open space. At this time, Kumho Marine Tech's GA-660 product was used for GPS, and CIS 100B Class B model was used for AIS receiver. In addition, the voice synthesis engine was developed using the VoiceText engine, and the VHF broadcasting equipment utilized the GCSC VHF System. The STR-6000B product was used as a VHF radio to check whether the automatic safety navigation support system 10 for ships was normally received from the other ship side, and these devices are shown in FIG. 3 (b). During VHF broadcasting and reception, development was carried out after installing a dummy rod (termination) that attenuates the VHF transmission output instead of an antenna so as not to interfere with the communication of other ships sailing around the actual area (VHF transmission and reception is possible at short distances).

In addition, the components of the automatic safety navigation support system for ships (10) were developed based on the C# language using Visual Studio 2019 Professional development tools in the Microsoft Windows 10 Pro 64-bit operating system. Since the VoiceText TTS engine is based on the C++ language, various functions in the DLL file were imported into the C# environment and utilized.

As shown in FIG. 4, the automatic safety navigation support system 10 for ships receives encapsulated AIS data and outputs it to a list view, and when an item is selected, 6-bit decoding is performed so that detailed information can be checked. composed. On the left, the data received from GPS is processed to check the position information of the ship, and when the item received in the list view is selected, the distance and direction are expressed using the location information of other ships in the AIS mage. Other functions include serial communication setting to link with GPS/AIS receiver, file saving of received GPS/AIS data, initialization of data displayed in list view, program termination, limit on the number of received messages, AIS message for reporting ship position There are selective reception of only IDs 1 to 3 and setting a limit on the number of received data.

First, after configuring the environment as shown in FIG. 5 in a laboratory located near Busan New Port, the test was conducted. After processing the message received from GPS and AIS, the automatic safety navigation support system 10 for ships developed through this process generates an automatic voice message and transmits it through VHF broadcasting equipment, and maritime VHF radio (assuming equipment mounted on other ships) ), it was confirmed that it was normally received.

In addition, a field test of the automatic safety navigation support system 10 for ships developed using two 9.77-ton ships in the sea around Gunsan City was conducted as shown in FIGS. 6 to 8. At this time, the test was conducted at different distances according to the risk of collision defined in Table 1, and as a result, the voice synthesis-based automatic navigation safety support message was transmitted from the test VHF radio and the VHF ship radio mounted on the actual ship as shown in FIG. It was verified that the output was normal.

In this way, when the automatic safety navigation support system 10 for ships according to the present invention is applied to large ships, maritime hazards can be grasped in advance for safe navigation of ships, and small and medium-sized ships without AIS do not require human intervention. It is possible to prevent a collision accident in advance by notifying the risk of collision through the transmission of a synthesized voice message.

The present invention is not limited to the above embodiments, and the scope of application is diverse, and various modifications and implementations are possible without departing from the gist of the present invention claimed in the claims.

1: Charity
2: batting line
10: Automatic safety navigation support system
20: first wireless communication equipment
30: second wireless communication equipment
100: location message processing module
200: collision risk evaluation module
300: automatic speech synthesis control module
400: wireless communication control module

Claims (3)

In the automatic safety navigation support system for ships that informs other ships, which are small and medium-sized ships, of a collision risk using the second wireless communication equipment installed on the other ship using GPS, AIS and the first wireless communication equipment installed on the own ship,
a location message processing module that receives location information of the vessel through the GPS and receives and processes the location of the other vessel located around the vessel through the AIS;
a collision risk evaluation module that analyzes a risk level in each step according to the distance between the own vessel and the other vessel through the location message processing module;
an automatic speech synthesis control module for generating a speech synthesis message according to the level of risk analyzed by the collision risk evaluation module; and
and a wireless communication control module outputting the speech synthesized message synthesized through the automatic speech synthesis control module to the first wireless communication equipment and transmitting it to the second wireless communication equipment. system. According to claim 1,
The automatic speech synthesis control module,
Automatic safety navigation for ships, characterized in that a voice synthesized message is output by voice synthesis of the azimuth and distance information between the own vessel and the other vessel calculated through the location message processing module, and the level of risk determined through the collision risk evaluation module. support system. According to claim 1,
The wireless communication control module,
The automatic safety navigation support system for ships, characterized in that for activating (ON) or stopping (OFF) the first wireless communication equipment and the second wireless communication equipment.

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