JP2005300388A - Navigation program for voyage and device thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation program for voyage and device thereof capable of judging synthetically safe courses by making it possible to treat stranding and collision to the same as a dangerous positions, by evaluating collision danger with other vessels on an electronic charts at a predicted point of collision in guarding zone, utilizing information from both ARPA system and AIS system. <P>SOLUTION: Collision prediction is implemented by the use of both information on any other vessels acquired from AIS system and information on any other vessels acquired from ARPA. Therefore, escaping of information is reduced. In particular, quantitative expansion and automation of acquiring of other vessels information by means of future ARPA system, and expansion of loading duty of AIS system make the function concerned effective. Moreover, by defining the length as hours (minutes) and the width as distance (meters) in the watch extent (guarding zone) placed in the course direction of self-ship, an extent attention should be payed becomes reasonable shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a navigation navigation program and apparatus for predicting and displaying other ships entering the course of own ship by operating on a computer connected to an ARPA apparatus and an AIS apparatus.

  As a conventional ship collision prevention assistance device, a ship is extracted and tracked from a radar image, and its motion vector is obtained and displayed, and the closest distance to the target ship is obtained and its value is smaller than a predetermined value. There are known ARPA (Automatic Radar Plotting Aids) devices that emit alarms. The following Patent Documents 1 to 3 disclose a technique for obtaining a collision risk degree and a collision prediction point between the own ship and another ship using an ARPA device. Further, Patent Document 4 discloses a technique for determining a ship avoidance route by obtaining a collision risk using an ARPA device.

  Non-patent literature 1 also describes avoidance and collision prevention.

  A ship automatic identification system called an AIS (Automatic Identification System) apparatus is also known. An AIS device obligates a base station provided on land or a surrounding vessel station to transmit various transmission information from the vessel station provided on each vessel, and the AIS device acquires such transmission information. Is. As the transmission information, in addition to a ship number, a call code, a ship name, and the like that specify a ship, the position, course, speed, direction, destination, and the like of the ship can be acquired. Patent Document 5 listed below discloses a technique for displaying a target captured by an ARPA device and a target acquired using an AIS device on a screen in association with each other.

Furthermore, a technique for acquiring position information of the ship by a GPS (Global Positioning System) device is known.
Japanese Patent Laid-Open No. 7-246998 JP 11-272999 A JP 2000-128073 A Japanese Patent Laid-Open No. 9-22499 JP 2002-245599 A "Avoidance and collision prevention device", published by Kuruma Imazu, Naruyamado Shoten, December 8, 1984

  As described above, there is a conventional way of using the ARPA device to obtain the predicted point of collision between the ship and the other ship, but information from the AIS device is added to this and all other ship information from both devices is displayed. The device is not known. In Patent Document 5, the target captured by the ARPA device and the target acquired using the AIS device are displayed on the screen in association with each other. However, in consideration of the collision prevention between the own ship and the other ship, Absent.

  The present invention uses the information from both the ARPA device and the AIS device, and evaluates the collision risk with other ships on the electronic chart at the collision prediction point in the guard zone. It is an object of the present invention to provide a navigation program and device for navigation which can be handled in the same manner and thereby enable comprehensive judgment of a safe course.

  In order to achieve the above object, in the present invention, collision prediction is performed using both the other ship information acquired by the AIS apparatus and the other ship information acquired by the ARPA apparatus. This reduced information leakage. In particular, this function will become more effective due to the quantitative expansion and automation of the acquisition of other ship information by future ARPA devices, and the expansion of the duty range of AIS devices.

  Further, in the present invention, a warning range in the course of the ship's own course (guard zone) is defined as length (hours) and width (meters), so that the range of warning and attention should be rationalized. Shaped. In particular, it is possible to determine at a glance how many minutes the dangerous point in the direction of the ship's ship is on the fraction scale. In addition, by defining the width as a distance, the distance between safe ships can be estimated. Since the length is defined in units of time (minutes), the guard zone is displayed on the display by a length obtained by multiplying the speed of the ship at that time by the time.

  In the present invention, the collision prediction point is calculated on the condition of the speed of the other ship, the course and the own ship speed. When there is a collision prediction point in the guard zone, a predetermined mark is displayed. If the conditions do not change, the predicted collision point in the direction of the ship's own course will be at a substantially constant position, so it is possible to reduce the risk by avoiding that point in advance.

  In addition, by displaying on the electronic chart the locations where there is a risk of collision with other ships, it is possible to make a comprehensive judgment on the safety course. For example, ENC and HCRF, which are international standards, are used for electronic charts. It is possible to easily confirm the grounding danger with the latest electronic chart.

  According to the present invention, by using information from both the ARPA device and the AIS device, the risk of collision with other ships is evaluated on the electronic chart at the predicted collision point in the guard zone, so that the grounding and the collision are detected. It is possible to treat it as a dangerous place in the same way, and thus it is possible to make a comprehensive judgment of the safe course.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram for explaining the operation of the navigation navigation program and apparatus according to the present invention. A GPS receiver 101, an ARPA device 102, and an AIS device 103 are connected to the PC 120. The connection interface between these devices 101 to 103 and the PC 120 is not particularly limited. By executing the navigation program for navigation according to the present invention on the PC 120, each function described below is realized. In FIG. 1, blocks indicated by bold lines indicate processing by the navigation program for navigation, and other blocks indicate data. However, although the display data generation unit 116 shows processing by a program, the data to be handled is shown in a normal thickness because it is illustrated.

  First, information input from the GPS receiver 101 is decoded by the GPS decoder 104 and captured as own ship information 108. The own ship information 108 includes own ship position information, speed information, course information, and the like. An output signal from the ARPA device 102 is decoded by the ARPA decoder 105, and similarly, an output signal from the AIS device 103 is decoded by the AIS decoder 106, and both are taken in as other ship information 109. Specifically, the other ship information 109 includes position information, speed information, course information, and the like of the other ship. Nautical chart information 107 is stored in advance in a hard disk of the PC 120 or the like.

  The guard zone shape calculation process 110 is a process for calculating the guard zone information 111 based on the own ship information 108. The guard zone information 111 is a range in which a warning range in the course direction of the ship is defined by a time (minute) and a width by a distance (meter) based on the current position, speed, and course. The predicted collision point calculation process 112 calculates a predicted collision point 113 between the own ship and the other ship based on the own ship information 108 and the other ship information 109. The predicted collision point may be calculated by an arbitrary method on the condition of the speed and course of the other ship and the speed of the ship.

  The grounding risk area intersection determination process 114 is a process for determining whether or not there is a grounding risk point in the guard zone based on the chart information 107 and the guard zone information 111. The obtained grounding danger point is passed to the display data generation unit 116. The predicted collision point intersection determination process 115 is a process for determining whether there is a predicted collision point with another ship in the guard zone based on the guard zone information 111 and the predicted collision point information 113. The obtained collision risk position information is passed to the display data generation unit 116.

  The display data generation unit 116 generates display data to be displayed on the PC 120 based on the information passed from the intersection determination processes 114 and 115. The danger information (grounding point or collision point) 116-1, target information (position information) 116-2 of own ship and other ships, chart information 116-3, and the like are displayed.

  FIG. 2 shows a display example displayed on the display of the PC 120 by the process shown in FIG. In the window 200, land information 201 from the chart information 107 and shoals 202 that are stranded danger areas are displayed. 210 indicates the current position of the ship, and 211 indicates the track of the ship. Reference numeral 212 denotes a guard zone. The guard zone 212 is obtained by the guard zone shape calculation unit 110 based on the current position, speed, and course of the own ship 210. The guard zone 212 displays scales 212-1, 212-2, 212-3,... In minutes in terms of the length direction, that is, the course direction of the ship. Scale 212-1 indicates own ship position one minute after the present time, scale 212-2 indicates own ship position two minutes after the present time, scale 212-3 indicates own ship position three minutes after the present time, and so on. It is. The width direction of the guard zone 212 is a predetermined metric width. The user can arbitrarily specify how many minutes the guard zone is in the length direction and how many meters the guard zone is in the width direction.

  The other ships are displayed based on the acquired other ship information 109 as indicated by triangles 221 to 223 for the AIS other ships and circle 224 for the ARPA other ships. For the other ships 221 and 222 whose predicted collision points cross the guard zone 212, the straight lines of the navigation routes 232 and 234 are displayed in the course direction of these other ships, respectively, and the predicted collision points are indicated by cross marks 233 and 235. To display. Thereby, the other ship which may collide in a guard zone can be recognized clearly. For other ships that do not have a predicted collision point in the guard zone, only a triangle mark or a circle mark is displayed, so the screen does not become complicated.

The block diagram which shows operation | movement of the navigation program for navigation which concerns on this invention The figure which shows the example of a display displayed by the navigation program of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... GPS receiver, 102 ... ARPA device, 103 ... AIS device, 104 ... GPS decoder, 105 ... ARPA decoder, 106 ... AIS decoder, 107 ... Nautical chart information, 108 ... Own ship information, 109 ... Other ship information, 110 ... Guard zone shape calculation processing, 111 ... Guard zone information, 112 ... Collision prediction point calculation processing, 113 ... Collision prediction point information, 114 ... Stranding risk region intersection determination processing, 115 ... Collision prediction point intersection determination processing, 116 ... Display data generation 116-1, ... danger information (grounding point, collision point), 116-2 ... own ship / other ship target information (position information), 116-3 ... nautical chart information, 120 ... PC.

Claims (3)

By operating on a computer connected to a GPS receiver, ARPA device, and AIS device,
Means for acquiring own ship information including the position, speed, and course of the ship by an output signal from the GPS receiver;
Means for capturing output signals of the ARPA device and the AIS device and acquiring other ship information including the position, speed, and course of the other ship;
Storage means for storing nautical chart information;
Based on the own ship information, means for obtaining a guard zone that is a warning range in the traveling direction of the own ship;
Based on the own ship information and the other ship information, means for obtaining an expected collision point where the own ship and the other ship are expected to collide,
Means for determining, based on the chart information and the guard zone information, whether a stranded danger area intersects the guard zone;
Means for determining whether a predicted collision point intersects the guard zone based on the predicted collision point and the guard zone information;
Display of nautical chart based on the nautical chart information, display of own ship based on the own ship information, display of other ships based on the other ship information, and collision with the stranded danger area in the guard zone obtained by the intersection determination means A navigation program for navigation, which realizes a means for displaying a predicted point. A navigation device for navigation connected to a GPS receiver, an ARPA device, and an AIS device,
Means for acquiring own ship information including the position, speed, and course of the ship by an output signal from the GPS receiver;
Means for capturing output signals of the ARPA device and the AIS device and acquiring other ship information including the position, speed, and course of the other ship;
Storage means for storing nautical chart information;
Based on the own ship information, means for obtaining a guard zone that is a warning range in the traveling direction of the own ship;
Based on the own ship information and the other ship information, means for obtaining an expected collision point where the own ship and the other ship are expected to collide,
Means for determining, based on the chart information and the guard zone information, whether a stranded danger area intersects the guard zone;
Means for determining whether a predicted collision point intersects the guard zone based on the predicted collision point and the guard zone information;
Display of nautical chart based on the nautical chart information, display of own ship based on the own ship information, display of other ships based on the other ship information, and collision with the stranded danger area in the guard zone obtained by the intersection determination means A navigation device for navigation, comprising means for displaying a predicted point. In the navigation navigation program according to claim 1 or the navigation navigation device according to claim 2,
The means for obtaining the guard zone defines the length direction of the guard zone by the length of the time unit designated by the user, and defines the width direction of the guard zone by the distance designated by the user. Navigation program or navigation device for navigation.

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