JP2010122077A - Navigation method for ship, and navigation device for ship - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation method for a ship and a navigation device for the ship, capable of guiding a return-to-port start time corresponding to a sunset time, and guiding a route safely to a port to be returned. <P>SOLUTION: In the method, the position of a port to be returned by the ship is stored, and the present position of the ship is calculated, and the sunset time is acquired. Then, a distance and a required time from the present position to the port are calculated, and the return-to-port start time for starting return to the port is calculated based on the required time and the sunset time, and it is determined whether a present time becomes equal to the return-to-port start time or not, and when becoming equal, it is guided that the return-to-port start time has come. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention relates to a marine navigation method and marine navigation apparatus, and more particularly to a marine navigation method and navigation apparatus for guiding a port return start time according to sunset time and performing route guidance to a port to be ported.

  A navigation device installed in a moving body such as a ship calculates a current position using a signal received from a GPS (Global Positioning System) satellite, and displays a map around the current position on an LCD (Liquid Crystal Display) or the like. And a ship mark indicating the current position is superimposed on the map, and the current position and a map around the current position are presented to the user.

  Further, when the user sets the departure point and the destination, the navigation apparatus calculates a guidance route to the destination using the position information of the departure point and the destination, and displays the current position and the guidance on the display unit. By displaying the route, the user can be reliably guided to the destination. For example, if the current location is set as the departure point and the port to be returned (port return) is set as the destination, the guide route to the port return is displayed, so that the user can surely return to the port return. In addition, when the user sets the scheduled return time, the departure time can be set so that the user can arrive at the return place by the scheduled return time, and return start guidance from the current location can be performed.

  As described above, in the above-described conventional technique, the user sets the return port as the destination, or sets the return port and the scheduled return time, for example, so that the user can arrive at the return port at the scheduled return time. can do. By the way, even if the user sets the scheduled return time, the sunset time will change depending on the season and region, and if the weather is bad, the situation will be dark from early time, and the user will accurately set the sunset time. There is a possibility not to grasp. For this reason, before the user arrives at the return port, the area around the ship becomes dark or the weather deteriorates, causing an accident.

From the above, the purpose of the present invention is to consider the sunset time that changes according to the season and region, so that the user can return to the port before going dark and the route to the port of return so that the user can return to the port before dark. It is to return to the port of return without causing anxiety to the user and without an accident.
Another object of the present invention is to guide you to return to the port before the weather gets worse.

The present invention guides the user to the port to return to the port without causing anxiety in consideration of the sunset time that changes depending on the season and region and the deterioration of the weather around the port of return where the ship should return. A navigation method and a navigation device for a ship.
Ship navigation method The ship navigation method of the present invention includes a step of storing a position of a port to which a ship should return, a step of calculating a current position, a step of obtaining a sunset time, and from the current position to the port. A step of calculating a distance and a required time, a step of calculating a return port start time to return to the port based on the required time and the sunset time, a step of determining whether or not the current time and the return port start time are equal In the case where they are equal to each other, there is provided a step of guiding that the port return start time has been reached.

  The marine vessel navigation method of the present invention further includes a step of storing solar trajectory information, and a step of calculating sunset time based on the position of the port and the solar trajectory information.

  The marine vessel navigation method of the present invention further includes a step of acquiring weather information near the port, a step of determining whether or not the weather near the port at the sunset time is bad based on the weather information, If it is bad, the method includes a step of advancing the return port start time to a time when it can arrive before the weather deteriorates.

Ship navigation device The ship navigation device of the present invention includes a return port storage unit that stores a position of a port to which a ship should return, a current position calculation unit that calculates a current position, and a sunset that acquires a sunset time. A time acquisition unit; a distance calculation unit that calculates a distance from the current position to the port and a required time; and a return start time to return to the port based on the required time and the sunset time. A controller that determines whether or not the return port start time is equal, and controls to guide that the return port start time has been reached if they are equal.

  The marine vessel navigation device according to the present invention further includes a solar trajectory storage unit that stores solar trajectory information, and the sunset time acquisition unit calculates a sunset time based on the position of the port and the solar trajectory information. To do.

  The marine vessel navigation apparatus according to the present invention further includes a weather information acquisition unit that acquires weather information near the port, and the control unit further includes the weather near the port at the sunset time based on the weather information. If it is bad, the port return start time is advanced to a time when it can arrive before the weather gets worse.

According to the present invention, the sunset time that changes according to the season and the region is taken into account, and the user is guided to the return port start time and the route to the return port so that the user can return to the port before dark. It is possible to guide to the port of return without causing anxiety and without accidents.
In addition, according to the present invention, the weather information in the vicinity of the return port is acquired, and when the weather at the arrival time at the return port is bad, the return port start time is set so that it can arrive at the return port before the weather worsens Because I did it, I can guide you so that you can return to the port before the weather worsens.

(A) Outline of the Present Invention FIG. 1 is a schematic explanatory view of the present invention, wherein 1 is a display screen of a display unit of a marine navigation device (not shown), 2 is a ship mark indicating the current position of the ship, and 3 is a ship mark. Map of 2 nearby, 4 is a return port start time, 5 is a message to inform that the return port start time is reached, 6 is a confirmation button operated when confirming message 5, 7 is a route guidance arrow, 8 is a sunset It's time. The confirmation is input by a touch panel, but may be input by an operation unit such as a hard key not displayed. The return port is stored by the user.

  The current position is calculated from the GPS signal, the sunset time is calculated from the current position and the solar orbit data, and weather information in the vicinity of the return port is obtained. Thereafter, the distance from the current position to the port of return and the required time are calculated, and the port return start time to the port of return is calculated so that the user can return to the port before sunset based on the required time and the sunset time. Next, it is determined whether or not the weather at the time of arrival at the port of return is rain based on the weather information. If it is not rain, a map 3 is displayed on the display screen 1 as shown in FIG. The ship mark 2 and the return port start time 4 are superimposed on the map 3 and displayed. Next, it is determined whether or not the current time and the return port start time are equal. If they are equal, a map 3 is displayed on the display screen 1 as shown in FIG. The ship mark 2, the message 5, the confirmation button 6, and the arrow 7 are displayed in a superimposed manner, and a voice guidance is given to the user indicating that the port return start time has been reached. After that, the display of FIG. 1B is continued until the user presses the confirmation button 6 and the voice guidance is given every predetermined time. When the user presses the confirmation button 6, the display shown in FIG. As shown, the map 3 is displayed on the display screen 1, the ship mark 2, the arrow 7 and the sunset time 8 are superimposed on the map 3, and guidance to the port of return is started. In addition, when the weather at the return port start time is rainy, the return port start time is changed based on the weather information so that it can arrive at the return port before the weather deteriorates, and thereafter, the set return start port is set. Based on the time, we will guide you to return to port.

  Note that the sunset time can be tabled and obtained from the table. For example, for each prefecture with the sea, every 10 days, a table of sunset times for one year is prepared, and the sunset time is acquired from the table of the prefecture where the departure port (return port) is located.

  As described above, since the sunset time and the weather deterioration are taken into consideration, the port return start time is guided, so that the user can be guided to the port of return without anxiety and without an accident.

(B) Embodiment FIG. 2 is a system configuration diagram including a marine navigation apparatus according to an embodiment of the present invention, and is composed of, for example, a weather information transmission unit 50 and a navigation apparatus 20 existing at a return port. Information transmitted from the weather information transmitting unit 50 will be described later.
In the navigation device 20, the GPS signal 21 uses a satellite navigation system, and a signal received from the satellite is input to the current position calculation unit 22. The current position calculation unit 22 calculates the current position based on the input signal. The recording medium 23 is a map storage medium for storing map data, and the reading unit 24 reads map data around the current location stored in the recording medium 23 based on the current position calculated by the current position calculating unit 22, The data storage unit 25 temporarily stores the map data. The map image generation unit 26 generates a map image corresponding to the map data. The return port storage unit 27 stores a port to which the ship should return, and is set by the user as a return port, for example.

  The distance calculation unit 28 calculates the distance from the current position to the port of return and the required time based on the current position calculated by the current position calculation unit 22 and the position of the port return stored in the port return storage 27. . The required time is calculated assuming that the aircraft is navigating at a normal speed (for example, 10 km / h). The solar trajectory storage unit 29 stores solar motion trajectory data, and the sunset time acquisition unit 30 stores the return port location information stored in the return port storage unit 27 and the solar trajectory storage unit 29 stores. The sunset time of the return port is calculated on the basis of the moving orbit of the sun. The weather information receiving unit 31 receives weather information (information content will be described later) in the vicinity of the return port transmitted from the weather information transmitting unit 50.

  The control unit 32 controls the navigation device 20 as a whole, calculates the return port start time that can return to the port before the sunset time of the present invention, which will be described later, or before the weather worsens, and guides the user to the return port start time. , Etc. The ROM 33 stores various software. In addition to the control software, various control programs such as (1) guidance route search software and (2) route guidance software are stored. The RAM 34 temporarily stores guidance route data and various processing results.

  The guide route generation unit 35 searches for the guide route and inputs the guide route to the image composition unit 37. The message generator 36 generates a guidance message or the like that visually guides the return port start time and sunset time calculated by the control unit 32 to the user, and inputs the message to the image composition unit 37. The image composition unit 37 synthesizes the map image generated by the map image generation unit 26, the guidance route input from the guidance route generation unit 35, the guidance message generated by the message generation unit 36, and the like on the display unit 38. input. The display unit 38 displays the composite image input from the image composition unit 37. When the return port start time calculated by the control unit 32 is reached, the guide voice generating unit 39 generates a guide voice that indicates that the return port start time has been reached, and inputs the guide voice to the guide unit 40. Outputs the inputted guidance voice. The operation unit 41 can perform various operations. For example, the operation unit 41 is used by a user to confirm a guidance message of a return start time of the present invention.

FIG. 3 is an explanatory diagram of weather information transmitted from the weather information transmitting unit 50 and received by the weather information receiving unit 31.
The weather information transmitted / received includes at least weather information of the port to be returned to the ship, which is stored in the return port storage unit 27. For example, in FIG. 3, the weather until a predetermined time after each port return time is included, and based on this, the control unit 32 determines whether the weather at the scheduled arrival time at the port return is rainy, If it is not rain, the port return start time is not changed, and if it is raining, the port return start time is changed to a port return start time that can be reached before the weather in the port returns.

  FIG. 4 is a processing flow of the navigation device according to the embodiment of the present invention. Hereinafter, description will be made with reference to FIG. It is assumed that the return port to be returned to the port has already been set by the user and stored in the return port storage unit 27.

  First, the GPS receiving unit 21 calculates the current position from the received GPS signal (step S401), and the sunset time calculating unit 30 calculates the position information of the return port and the solar motion orbit data stored in the solar orbit storage unit 29. Based on the above, the sunset time is calculated (step S402).

  Next, the weather information receiving unit 31 acquires the weather information transmitted by the weather information transmitting unit 50 as shown in FIG. 3 (step S403), and the distance calculating unit 28 calculates the current position calculated in S401 and the return port storage unit 27. The distance from the current position to the return port and the required time are calculated based on the location information of the return port stored in (Step S404), and before the sunset time from the required time and the sunset time. The return start time at which return can be made is calculated (step S405).

  Next, the control unit 32 determines whether the weather at the time of arrival at the port of return (= (port return start time) + (time required)) is rain based on the weather information (step S406). Advances to S407, and in case of rain, advances to S412.

  In S406, when it is not raining, the control unit 32 displays the map 3, the ship mark 2 and the port return start time 4 near the current position on the display screen 1 as shown in FIG. 1A. The display unit 38 displays as shown in FIG. 1A (step S407).

  Thereafter, the control unit 32 determines whether or not the current time has reached the port return start time (step S407). If yes, the process proceeds to S409, and if not, returns to S401 and repeats the same processing.

  In S408, when the current time becomes the port return start time, the control unit 32 displays the map 3, ship mark 2, message near the current position on the display screen 1 as shown in FIG. 5. Instructed to display the confirmation button 6 and the arrow 7 of the guidance route, and instructed the guidance voice generating unit 39 to generate a voice guidance for guiding the user that the return port start time has been reached. 37 is displayed as shown in FIG. 1B, and the guide unit 40 guides that the return time has come (step S409).

  Next, the control unit 32 determines whether or not a confirmation operation to the operation unit 41 such as the confirmation button 6 has been performed (step S410). If the confirmation operation has been performed, the process proceeds to S411 and the confirmation operation is performed. If not, the process returns to S409.

  In S410, when the confirmation operation is performed, the control unit 32 displays on the display unit 38 the map 3 near the current position, the ship mark 2, and the guidance route arrow on the display unit 38 as shown in FIG. 7 and sunset time 8 are instructed to be displayed, and the display unit 38 displays them as shown in FIG. 1C (step S411).

  In S410, when the confirmation operation is not performed, the process returns to S409, the control unit 32 instructs the guidance voice generating unit 39 to perform voice guidance every predetermined time, and the guide unit 40 has reached the return start time. The effect is guided (step S411).

  In S406, when the weather at the time of arrival at the port of return is rainy, the control unit 32 changes the port return start time so that it can arrive at the port of return before the weather gets worse (step S412), and proceeds to S407. The process after S407 is performed.

In the above, whether the weather is good or bad is determined based on whether it is raining or not, but it is also possible to determine whether the weather is good or bad by including wind power.
In the above description, the weather information is considered (S406, S412). However, it is not always necessary to consider it. In the case of a child, S406 and S412 are not necessary.

  In this embodiment, the sunset time of the return port is calculated based on the position information of the return port and the sun's motion trajectory data, but the correspondence table of the sunset time of the prefecture where the return port is located is You may make it memorize | store and acquire this sunset time, In such a case, the sunset time for every 10 days of this return port is memorize | stored, for example.

As described above, according to the present embodiment, the sunset time that changes according to the season and the region is taken into consideration, and the return port start time and the route to the return port are presented to the user so that the user can return to the port before dark. Therefore, it is possible to guide to the port of return without causing anxiety to the user and without an accident.
Further, according to the present embodiment, the weather information in the vicinity of the return port is acquired, and when the arrival time at the return port is bad, the return time is set so that the return to the return port can be reached before the weather deteriorates. Because I did it, I can guide you so that you can return to the port before the weather worsens.

It is a schematic explanatory drawing of this invention. 1 is a system configuration diagram including a marine navigation apparatus according to an embodiment of the present invention. It is explanatory drawing of the weather information transmitted from the weather information transmission part 50, and received by the weather information reception part 31. FIG. It is a processing flow of the navigation apparatus of the Example of this invention.

Explanation of symbols

1 Display screen of the display unit of the navigation system for ships 2 Ship mark indicating the current position of the ship at time 3 Map around the ship mark 2 4 Return port start time 5 Message to inform that the return port start time has been reached 6 Confirm message 5 7 Confirmation button to be operated at the time of operation 7 Route guidance arrow 8 Sunset time 21 GPS receiving unit 22 Current position calculating unit 23 Recording medium 24 Reading unit 25 Map data storing unit 26 Map image generating unit 27 Return port storing unit 28 Distance calculating unit 29 Solar orbit storage unit 30 Sunset time calculation unit 31 Weather information reception unit 32 Control unit 33 ROM
34 RAM
35 Guide route generator 36 Image generator 37 Image compositing unit 38 Display unit 39 Guide voice generator 40 Guide unit 41 Operation unit

Claims (6)

In a navigation method for a ship that calculates a route that a ship should travel and outputs information including the obtained route,
Memorizing the position of the port where the ship should return;
Calculating the current position;
Step to get the sunset time,
Calculating a distance and a required time from the current position to the port;
Calculating a return port start time to return to the port based on the required time and the sunset time;
Determining whether or not the current time and the port return start time are equal;
If they are equal, a step to inform that the return time has come.
A navigation method for a ship, comprising: A step of storing solar trajectory information;
Calculating a sunset time based on the position of the port and the solar trajectory information;
The marine navigation method according to claim 1, further comprising: And obtaining weather information near the port;
Determining whether or not the weather near the port at the sunset time is bad based on the weather information;
If the weather is bad, the step of advancing the return port start time to a time that can arrive before the weather worsens,
The marine navigation method according to claim 1, further comprising: In a navigation device for a ship that calculates a route that a ship should travel and outputs information including the obtained route to a display unit,
A return port storage unit that stores the position of the port where the ship should return,
A current position calculator for calculating the current position;
A sunset time acquisition unit for acquiring the sunset time;
A distance calculation unit for calculating a distance and a required time from the current position to the port;
Based on the required time and the sunset time, the return port start time to be returned to the port is calculated, and it is determined whether or not the current time and the return port start time are equal. A control unit that controls to guide that,
A marine navigation device comprising: Furthermore, a solar trajectory storage unit for storing solar trajectory information is provided,
The sunset time acquisition unit calculates a sunset time based on the position of the port and the sun trajectory information.
The marine navigation device according to claim 4, wherein: In addition, a weather information acquisition unit for acquiring weather information near the port,
The control unit further determines whether or not the weather near the port at the sunset time is bad based on the weather information, and if so, arrives at the return port start time before the weather gets worse. Advance to the time when you can
The marine navigation device according to claim 4, wherein:

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