Title:
STRANDING PREVENTIVE ALARM DEVICE FOR VESSEL
Document Type and Number:
Japanese Patent JP2934575
Kind Code:
B2
Abstract:
PURPOSE: To enable the proper and speedy judgement for the danger of stranding, free from uselessness, by carrying out the judgement for the danger in consideration of the position and direction of an own vessel, vessel speed, and the refuge line elements.
CONSTITUTION: A stranding preventing alarm device is equipped with a position measuring device 11 for measuring the position of an own vessel, speedometer 12 for measuring the speed of the own vessel, gyuro 13 for detecting the direction (bow direction) of the own vessel, and a marine chart data base 14 storing the data of the stranding refuge lines joining the points of the equal water depth in the danger of stranding. A stranding danger judging device 15 sets the rectangular including the own vessel which is determined according to the size of the vessel and the vessel speed, in the advance direction of the vessel, on the basis of the position of the own vessel which is obtained from the position measuring device 11, direction of the own vessel obtained by the gyro 12, and the speed signal of the own vessel supplied from the speedometer 13, and judges if the bent point of the stranding refuge line read out from the marine chart data base 14 is set in the rectangular region or not, or the bent lines of the stranding refuge lines cross or not, and if the danger of stranding is judged, an alarm signal is outputted to the stranding alarm generating device 16, and an alarm is transmitted.
Inventors:
MATSUDA KAZUO
KUGA HIROMI
KUGA HIROMI
Application Number:
JP31366393A
Publication Date:
August 16, 1999
Filing Date:
December 14, 1993
Export Citation:
Assignee:
MITSUBISHI JUKOGYO KK
International Classes:
G01C21/00; B63B43/18; B63B49/00; G01S7/48; G08G3/02; (IPC1-7): B63B43/18; B63B49/00; G01C21/00; G01S7/48; G08G3/02
Domestic Patent References:
| JP5715096A | ||||
| JP5157577A |
Attorney, Agent or Firm:
Takehiko Suzue