Ship reverse-run detection system, ship reverse-run detection method, and recording medium storing ship reverse-run detection program

Patent metadata

Field	Value
Publication number	US-2018354598-A1
Application number	US-201816054297-A
Country	US
Kind code	A1
Filing date	Aug 3, 2018
Priority date	Feb 10, 2016
Publication date	Dec 13, 2018
Grant date	—

Abstract

A ship reverse-run detection system includes a memory, and a processor coupled to the memory, wherein the processor is configured to: detect a direction of change in a position of a ship based on position information of the ship which is detected by a position detection device which is mounted on the ship, specify a traveling direction associated with a navigation region of the ship which is specified based on the position information, by referring to a storage which stores the navigation region and the traveling direction in association with each other, and detect reverse run of the ship in the navigation region based on the magnitude of an angle between the direction of the change and the traveling direction.

First claim

What is claimed is:

1 . A ship reverse-run detection system comprising:
a memory; and a processor coupled to the memory, wherein the processor is configured to: detect a direction of change in a position of a ship based on position information of the ship which is detected by a position detection device which is mounted on the ship; specify a traveling direction associated with a navigation region of the ship which is specified based on the position information, by referring to a storage which stores the navigation region and the traveling direction in association with each other; and detect reverse run of the ship in the navigation region based on the magnitude of an angle between the direction of the change and the traveling direction.

2 . The ship reverse-run detection system according to claim 1 , wherein the processor transmits, when a reverse run of the ship is detected, information indicating an occurrence of the reverse run and information of an identification of the ship regarding the reverse run to a specific destination.

3 . The ship reverse-run detection system according to claim 1 , wherein the processor detects a reverse run of the ship in the navigation region when the magnitude of the angle is within a specific range and a continuous migration length of the ship is a specific length or more.

4 . The ship reverse-run detection system according to claim 3 , wherein the specific length is 30 meters or more.

5 . The ship reverse-run detection system according to claim 1 , wherein the processor detects a reverse run of the ship in the navigation region when the magnitude of the angle is equal to or larger than a specific angle exceeding 90°.

6 . The ship reverse-run detection system according to claim 1 , wherein the processor detects a reverse run of the ship in the navigation region when the magnitude of the angle exceeds 160° or 165°.

7 . A ship reverse-run detection method comprising:
detecting, by a computer, a direction of change in a position of a ship based on position information of the ship which is detected by a position detection device which is mounted on the ship; specifying a traveling direction associated with a navigation region of the ship which is specified based on the position information, by referring to a storage which stores the navigation region and the traveling direction in association with each other; and detecting reverse run of the ship in the navigation region based on the magnitude of an angle between the direction of the change and the traveling direction.

8 . The ship reverse-run detection method according to claim 7 , further comprising:
transmitting, when a reverse run of the ship is detected, information indicating an occurrence of the reverse run and information of an identification of the ship regarding the reverse run to a specific destination.

9 . The ship reverse-run detection method according to claim 7 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle is within a specific range and a continuous migration length of the ship is a specific length or more.

10 . The ship reverse-run detection method according to claim 9 , wherein the specific length is 30 meters or more.

11 . The ship reverse-run detection method according to claim 7 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle is equal to or larger than a specific angle exceeding 90°.

12 . The ship reverse-run detection system according to claim 7 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle exceeds 160° or 165°.

13 . A non-transitory computer-readable recording medium storing a ship reverse-run detection program which causes a computer to execute a process, the process comprising:
detecting a direction of change in a position of a ship based on position information of the ship which is detected by a position detection device which is mounted on the ship; specifying a traveling direction associated with a navigation region of the ship which is specified based on the position information, by referring to a storage which stores the navigation region and the traveling direction in association with each other; and detecting reverse run of the ship in the navigation region based on the magnitude of an angle between the direction of the change and the traveling direction.

14 . The non-transitory computer-readable recording medium according to claim 13 , further comprising:
transmitting, when a reverse run of the ship is detected, information indicating an occurrence of the reverse run and information of an identification of the ship regarding the reverse run to a specific destination.

15 . The non-transitory computer-readable recording medium according to claim 13 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle is within a specific range and a continuous migration length of the ship is a specific length or more.

16 . The non-transitory computer-readable recording medium according to claim 15 , wherein the specific length is 30 meters or more.

17 . The non-transitory computer-readable recording medium according to claim 13 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle is equal to or larger than a specific angle exceeding 90°.

18 . The non-transitory computer-readable recording medium according to claim 13 , wherein a reverse run of the ship is detected in the navigation region when the magnitude of the angle exceeds 160° or 165°.

Assignees

• Fujitsu Ltd

Inventors

• Adachi Takayuki

Classifications

• B63B49/00

  Arrangements of nautical instruments or navigational aids (nautical measuring instruments G01C; radio navigation, analogous arrangements using other waves G01S) · CPC title

• B63H25/00 Primary

  Steering; Slowing-down otherwise than by use of propulsive elements (using movably-installed outboard propulsion units B63H20/00); Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements · CPC title

• B63H2025/045

  making use of satellite radio beacon positioning systems, e.g. the Global Positioning System [GPS] · CPC title

• G08G3/00 Primary

  Traffic control systems for marine craft (marking of navigational route B63B22/16, B63B51/00) · CPC title