JPH01187412A - Meteological and maritime meteological data service equipment on board ship - Google Patents

Abstract

PURPOSE:To omit the communication of data of a sea area where the ship does not sail and to inputting data on a navigation scheduled day in an object sea area by minimizing a meteological and maritime meteological data input area through a communication satellite. CONSTITUTION:A meteological data input sea area determining circuit 13 determines a navigation scheduled sea area of three days starting on the current day according to ship position/ship speed data grasped by an operation state recognizing circuit 10 and channel data which is calculated and determined by a channel data generating circuit 11 and stored by a data recording circuit 12. A sent data composing circuit 14 generates sent data by the combination of the navigation scheduled sea area and the passage expected date. Then a data transmitting and receiving circuit 15 sends it to the communication satellite 5 and also receives meteological data from the satellite 5. Then a received data analyzing circuit 16 analyzes and then stores the data in the circuit 12. Here, a synthesizing circuit for displaying data 17 reads the meteological and maritime meteological data, channel data, and ship position data out of the circuit 12 to generate and display a display picture plane on a display device 18.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a marine meteorological and oceanographic data service device that is capable of providing weather and oceanographic data services onboard a ship.

[Conventional technology]

In conventional ships, it is possible to obtain information regarding the current state of the weather and sea conditions by weather fax, but this method makes it difficult to obtain forecasts and handle them as data.

Therefore, recently, devices have been developed that input weather and oceanographic data via communication satellites.

[Problem that the invention seeks to solve]

However, the above-mentioned method of inputting meteorological and oceanographic data via a communication satellite has a problem in that the amount of communication data increases and the line usage fee becomes expensive.

The current meteorological and oceanographic data is 2.5 degrees in latitude and longitude.
Considering that the service is provided in a 2.5° rectangular sea area unit and that the current state of weather technology is limited to forecasts up to three days in advance, data communication via communication satellites is expensive. It is necessary to keep the amount to the minimum necessary.

From this perspective, the present invention provides a marine meteorological and oceanographic data service that enables efficient and inexpensive meteorological and oceanographic data service onboard ships by minimizing the sea area for inputting meteorological and oceanographic data via communication satellites. The purpose is to provide equipment.

[Means for solving problems]

In order to achieve the above object, the marine meteorological and oceanographic data service device of the present invention includes: a route data generation circuit that generates route data; a storage circuit for route data and meteorological data;
a navigation status recognition circuit that grasps the ship position and speed; a weather data input sea area determination circuit that determines the sea area where weather data is input from a land-based meteorological data service source; a transmission data synthesis circuit that creates transmission data; Consists of a data transmitting/receiving circuit that sends data to a communication satellite and receives weather data from the communication satellite at the same time, a received data analysis circuit, and a display data synthesis circuit and display device that superimposes and displays weather data, route data, and ship position. It is characterized by being

[For production]

In the above-described marine weather and oceanographic data service device of the present invention,
Based on the ship's scheduled route and voyage speed plan, the ship calculates the sea areas (a collection of 2.5° x 2.5° rectangles) it plans to navigate up to, for example, three days in advance, and calculates the area corresponding to each sea area. The day's meteorological/oceanic conditions/forecast data is requested from the land-based weather data service source, and the data for the corresponding day for the ocean area is provided by the service source.

The input sea area for each day up to three days in advance, which is specified by the ship to the weather data service source, is also transmitted from the ship to the service source via the communication satellite.

By adopting the above measures, it is possible to minimize the target sea area, and it is also possible to capture only the data for the day the ship passes through each sea area.

〔Example〕

Hereinafter, a marine meteorological and oceanographic data service device as an embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing its overall configuration, and FIG. 2 is an explanation of its meteorological and oceanographic online input sea area determining means. It is a diagram.

As shown in FIG. 1, the onboard meteorological and oceanographic data service device l includes a route data generation circuit 11 that generates route data.
In addition, a data storage circuit 12 capable of storing route data and meteorological data is provided, as well as a navigation status recognition circuit 10 for ascertaining ship position and ship speed, and weather information from a host computer 7 as a land-based meteorological data service source. A meteorological data input sea area determining circuit 13 is provided for determining the sea area into which data is to be input.

Furthermore, a transmission data synthesis circuit 14 that creates transmission data
is connected to the meteorological data input sea area determining circuit 13, and a data transmitting/receiving circuit 15 that sends the above transmission data to the communication satellite 5 and receives meteorological data from the communication satellite 5 at the same time.
is connected to the transmission data synthesis circuit 14.

A received data analysis circuit 16 is connected to the data transmission/reception circuit 15, and a display data synthesis circuit 17 for displaying meteorological data, route data, and ship position in a superimposed manner.
A display device 18 is connected to the data storage circuit 12 and the received data analysis circuit 16, and is connected to the display data synthesis circuit 17.

The ship position information from the positioning device 2 and the ship speed information from the speed log 3 are taken into the ship operation state recognition circuit 10, and the ship position information is thereby grasped.

The route data is determined by manual input in the route data generation circuit 11 or by calculation based on instructed navigation, and is stored in the data storage circuit 12 . Based on the route data and ship position/vessel speed data, the weather data input sea area determining circuit 13 determines the sea areas to be sailed on the current day, the next day, two days later, and three days later. These sets of scheduled navigation areas and scheduled passage dates are converted into a format that can be transmitted by the transmission data synthesis circuit 14, and then sent from the data transmission/reception circuit 15 to the communications satellite ship station 41, communications satellite 5, and communications satellite coast station 6. , is sent to a host computer 7 at the operating company as a source of weather data services.

In the host computer 7, meteorological and oceanographic situation/forecast data for the designated day in the designated sea area is extracted from the database and transmitted to the onboard meteorological and oceanographic data service device l via the communication satellite coast station 699 communication satellite and the communication satellite ship station 4. Ru.

The meteorological and oceanographic data is received by the data transmitting/receiving circuit 15, analyzed by the received data analyzing circuit 16, and then stored in the data storage circuit 12. The display data synthesis circuit 17 takes out weather and sea data, route data, and ship position data from the data storage circuit 12, creates a display screen, and displays it on the display device 18. □Information to be displayed overlappingly is as follows.
In addition, nautical chart information such as coastlines, latitude and longitude lines, meteorological and oceanographic statistical data (however, for sea areas input online from a weather data service company, online input data is displayed), etc. may be included.

FIG. 2 exemplifies the means for inputting meteorological and oceanographic data and determining the sea area, which plays a central role in the apparatus of the present invention. The route is R and the current ship position is P. If the current ship speed is maintained at The rectangle ABCD is considered to be the sea area for inputting meteorological and oceanographic data for the day. The intersection point P1 of this boundary line and the route is the above-mentioned P. By replacing , the input sea area for the next day, 2 days later, and 3 days later can be determined using the same concept.

〔Effect of the invention〕

As detailed above, in the marine weather and ocean data service device of the present invention, by minimizing the sea area where meteorological and ocean data is input via communication satellites, it is possible not only to eliminate the communication of data in areas where the ship is not navigating, but also to Even in ocean areas, it is possible to capture only the data for the day on which the cruise is scheduled, which has the advantage of keeping expensive communications satellite line usage charges to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of a marine meteorological and oceanographic data service device as an embodiment of the present invention.
The figure is an explanatory diagram of the meteorological and oceanographic online input sea area determining means. 1. Onboard meteorological and oceanographic data service device, 2. Positioning device, 3. Speed log, 4. I NMAR3AT ship station, 5. Communication satellite, 6. Communication satellite coast station, 7.
Host computer as a source of weather data services, 1
0... Navigation status recognition circuit, 11... Route data generation circuit, 12... Data storage circuit, 13... Weather data input sea area determination circuit, 14... Transmission data synthesis circuit, 15... Data transmission/reception circuit, 16.・Received data analysis circuit, 17・
-Display data synthesis circuit, 18...display device. Agent Patent Attorney Yoshihiko Iinuma

Claims (1)

[Claims] A route data generation circuit that generates route data, a storage circuit for route data and weather data, a navigation status recognition circuit that determines the ship's position and speed, and determines the sea area where weather data is input from a land-based weather data service source. A weather data input sea area determination circuit, a transmission data synthesis circuit that creates transmission data, a data transmission/reception circuit that transmits the transmission data to a communication satellite and receives weather data from the communication satellite at the same time, a reception data analysis circuit, and a transmission data synthesis circuit that creates transmission data. 1. A marine meteorological and oceanographic data service device comprising: a display data synthesis circuit and a display device for displaying route data and ship position in a superimposed manner.