JPH0212011A - Device for supporting ship-navigation - Google Patents

Abstract

PURPOSE:To maneuver a ship so as to make the deviation zero while watching a display and to prevent possibility of grounding on a reef by providing a gyro compass, electromagnetic log, and initial ship position setting circuit. CONSTITUTION:While a ship is on voyage, course information signal (a) from a gyro compass 1, speed information signal (b) from an electromagnetic log 2, and the own ship position initial value signal (c) from a initial ship position setting circuit 3 are inputted to a ship position calculation circuit 4. The circuit 4 finds the then position of its own ship based on the signals a-c. Then the own ship position information signal (d) is inputted to an arithmetic operation circuit 6 together with the signals (a) and (b). Course changing point information signal e1 and e2 are inputted to the circuit 6 from a planned route set circuit 5 based on the signals (a) and (d). Moreover, a deviation information signal (f) is outputted from the circuit 6 together with the signal (b) and inputted to a display 7. The display 7 displays the route for navigation based on the signals (f) and (b). Thus the ship can be maneuvered so that the deviation can be made zero.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ship maneuvering aid device used to aid navigation of ships and the like.

[Conventional technology]

As maritime transport becomes larger and faster, ensuring safe navigation of ships is an urgent issue.

Traditionally, the technology aimed at ensuring safe navigation has been to set the ship's planned route on a nautical chart, then periodically measure the ship's current position using radar or a sextant, and then record the measurement results with the results. By comparing the planned route with the planned route on the nautical chart, deviations in the ship's position from the planned route can be found, and the deviations can be corrected by maneuvering the ship.

[Problems to be solved by invention C] Since the above-mentioned conventional technology measures the ship's position discretely, it is possible for the own ship to deviate significantly from the planned route due to the influence of disturbances such as tidal currents when not measuring the ship's position. There are many cases where this happens. Therefore, each time the ship's position is measured, the set course for the next waypoint must be determined on the nautical chart and the ship is maneuvered, which poses the risk of running aground.
Furthermore, since the ship must be maneuvered to correct the deviation each time the ship's position is measured, it has the disadvantage of high fuel consumption. Furthermore, there is the disadvantage that a crew member is required to measure the ship's position.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide a ship maneuvering aid device that has free operability to ensure navigation safety.

[Means to solve the problem]

The ship maneuvering aid device of the present invention includes: a gyro compass that outputs course information; an electromagnetic log that outputs speed information; an initial position setting circuit that outputs initial value information of own ship position; and the course information, speed information, and initial position information. A ship position calculation circuit that inputs value information at regular time intervals and outputs own ship position information calculated based on this information along with the course information and speed information, and a planned route setting that stores way point information on the planned route. input the ship's position information, course information, and speed information from the ship position calculation circuit at the fixed time intervals, and based on these information, the next waypoint and the previous waypoint are determined from the planned route setting circuit. An arithmetic circuit that calculates the deviation between the planned route connecting these two waypoints and the ship's own position by inputting point information, and outputs the deviation information together with the speed information; It is characterized by comprising a display device that displays a road display for ship maneuvering corresponding to the deviation information that is input at a certain time interval, and at the same time displays the road at a speed corresponding to the speed information. shall be.

〔Example〕

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

FIG. 1 is a block diagram of a ship maneuvering assist device according to an embodiment of the present invention.

As shown in FIG. 1, the ship maneuvering aid device includes a gyro compass 1, an electromagnetic log 2, an initial ship position setting circuit 3, a ship position calculation circuit 4, a planned route setting circuit 5, a calculation circuit 6,
and a display 7.

The gyro compass l measures the course that the ship is sailing, and has a function of outputting the measured course to the ship position calculation circuit 4 as a course information signal a.

The electromagnetic log 2 measures the speed at which the ship is sailing, and has a function of outputting the measured speed to the ship position calculation circuit 4 as a speed information signal.

The initial ship position setting circuit 3 determines the own ship position (m degrees,
The initial value of the ship position (longitude) is outputted to the ship position calculation circuit 4 as the own ship position initial value signal C.

The ship position calculation circuit 4 samples and inputs the course information signal a from the gyro compass 1, the speed information signal from the electromagnetic log 2, and the own ship position initial value signal C from the initial ship position setting circuit 3 at regular time intervals T. , time T, course information signal a,
The current own ship position (latitude, longitude) is calculated based on the speed information signal C and the own ship position initial value signal C. The ship position calculation circuit 4 also has a function of outputting the own ship position information signal d indicating the own ship position information obtained by calculation, the course information signal a and the speed information signal S to the calculation circuit 6 at the time interval T. has.

The planned route setting circuit 5 stores way point information (latitude, longitude) on the planned route in advance.

The way-point information is stored in the planned route setting circuit 5 by sequentially inputting the way-point information from the start point to the end point of the planned route into the planned route setting circuit 5. This planned route setting circuit 5 has a function of outputting the waypoint information to the arithmetic circuit 6 at the time interval T as a waypoint information signal e.

The calculation circuit 6 first generates a waypoint information signal e indicating the next waypoint relative to the current own ship position based on the course information signal a and the own ship position information signal d input from the ship position calculation circuit 4.
The way point information signal e2 indicating the previous way point is inputted from the planned route setting circuit 5, and then the way point information signal e,
The distance between the line segment connecting the two waypoints indicated by and e and the current own vessel position indicated by the own vessel position information signal d is calculated, and the deviation information signal [indicating this distance] is displayed together with the speed information signal. The signal is output to the device 7 at time intervals T.

The display device 7 displays the road display for the own ship to return to the planned route based on the deviation information signal f input from the calculation circuit 6, and also displays the road display on the screen of the display device 7 based on the input speed information signal f. It has the function of moving from top to bottom.

Next, the operation of the ship maneuvering assist device according to this embodiment will be explained.

During navigation, the course information signal a from the gyro compass 1, the speed information signal from the electromagnetic log 2, and the own ship position initial value signal C from the initial ship position setting circuit 3 are sent to the ship position calculation circuit 4 at time intervals T. input. Based on the course information signal a, the speed information signal S, and the own ship position initial value signal C, the ship position calculation circuit 4 determines the own ship position at that time. Therefore, the own ship position is determined and updated at intervals of time T.

This own ship position information signal d is manually input to the calculation circuit 6 along with the course information signal a and the speed information signal. Waypoint information signals e and 82 are input to the calculation circuit 6 from the planned route setting circuit 5 based on the course information signal a and own ship position information signal d. The waypoint information signals C8 and c2 correspond to the next waypoint P and the previous waypoint Q, as shown in FIGS. 2 and 4. The arithmetic circuit 6 calculates the turning points e1 and 02.
and the own ship position information signal d, the distance between the own ship position R and the line segment l connecting the waypoints P-Q, that is, the deviation Δp from the planned route, is calculated. A deviation information signal f indicating the deviation Δl is output from the arithmetic circuit 6 at time intervals T together with the speed information signal, and is manually input to the display 7.

The display 7 displays the deviation information signal f input at time intervals T.
Indicates road display for vessel maneuvering based on the speed information signal and speed information signal. For example, if the own ship deviates to the right from line segment 1 (i.e., the planned route) by a deviation Δp as shown in FIG. It is displayed shifted to the left by Δl from the course. Further, since the deviation information signal f and the speed information signal S are inputted to the display 7 at the time interval T, the road display 7a changes every moment at the time interval T, so that the ship's own position can be recognized almost continuously. Furthermore, since the road display 7a moves from top to bottom in response to the speed information signal, the ship's own speed can be visually recognized. In addition, when the own ship deviates to the left from the planned route by a deviation Δl as shown in FIG. 4, the road display 7a is deviated by Δl from the current course as shown in FIG. It will be displayed shifted to the right.

〔Effect of the invention〕

As explained above, the ship maneuvering aid device of the present invention is based on the own ship's position calculated by the ship's position calculation circuit based on the course information from the gyro compass, the speed information from the electromagnetic log, and the own ship's position initial value information from the initial ship position setting circuit. The position information is input to the calculation circuit along with the course information and speed information, and the calculation circuit calculates and displays the deviation between the ship's position and the planned route based on this information and the way point information from the planned route setting circuit. The structure is such that the device displays the road display for ship maneuvering in real time based on this deviation information and speed information, resulting in the following effects.

(b) It is possible to maneuver the ship so that the deviation is zero while watching the display, and there is no risk of running aground.

(b) It is possible to navigate on a route that is almost the same as the planned route, and the fuel consumption is lower than before.

(c) Ship position measurement is performed automatically and does not require a crew member to measure the ship position.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a ship maneuvering aid device according to an embodiment of the present invention, FIGS. 2 and 4 are schematic diagrams showing deviations between own ship position and planned route, and FIGS. FIG. 4 is a screen diagram of a road display corresponding to FIGS. 2 and 4 shown by the display device of FIG. 1; 1... Gyro compass 2... Electromagnetic log 3... Initial ship position setting circuit, ship position calculation circuit, planned route setting circuit, calculation circuit, indicator

Claims (1)

[Claims] (1) A gyro compass that outputs course information, an electromagnetic log that outputs speed information, an initial position setting circuit that outputs initial value information of own ship's position, and a gyro compass that outputs course information, speed information, and initial value information for a certain period of time. a ship position calculation circuit that outputs own ship position information input at intervals and calculated based on this information together with the course information and speed information; a planned route setting circuit that stores way point information on the planned route; Own ship position information, course information, and speed information are input from the calculation circuit at the fixed time intervals, and based on these information, information on the next way point and the previous way point is input from the planned route setting circuit. an arithmetic circuit that calculates the deviation between the planned route connecting these two waypoints and the own ship's position and outputs it as deviation information together with the speed information; death,
A ship maneuvering assist device comprising: a display device that displays a road display for ship maneuvering corresponding to the deviation information at the constant time interval, and causes the road to proceed at a speed corresponding to the speed information.