JPS6132200A - Cource minitor for ship - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a route monitoring device for monitoring the route of a ship.

Prior Art When ships are currently navigating, they manually select a nautical chart of the necessary surrounding sea area, and manually plot the own ship's position measured by radar, ship position measuring device, etc. on the chart one by one to determine the own ship's position. The navigator determines the risk of running aground by checking the nautical charts for shallow waters, reefs, etc.

In addition, regarding collision prevention, the navigator uses his experience and judgment to check other vessels from radar images, use radar collision prevention aids, and check the surrounding conditions by keeping watch. The reality is that the danger of collision is avoided.

For this reason, in congested sea areas or narrow channels where ships are navigating, it is necessary to deploy many people such as lookout personnel, radar monitoring personnel, and nautical chart personnel. This made it difficult to ensure safe navigation.

OBJECT OF THE INVENTION Therefore, the present invention aims to improve the disadvantages of the route monitoring work that has been carried out during the operation of conventional ships as described above, and to
The purpose is to greatly improve the navigational safety of ships by preventing collisions with other ships and groundings.

- Furthermore, it is an object of the present invention to provide a ship route monitoring device that reduces the number of personnel and enables one-man watch or no-man watch even in narrow sea areas or narrow waterways where ships are navigating.

Structure of the Invention A ship route monitoring device according to the present invention displays a digitized nautical chart and digitized information around the ship detected by a ship position information detection device in a superimposed manner on a display device. The system is unique in that it is configured to clearly monitor the situation around the ship by superimposing it on the screen.

Example DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to illustrated embodiments.

The route monitoring device installed on a ship is shown in FIG. 1, and its block diagram is shown in FIG.

A ship position measurement station 1 that uses radio navigation as the ship position information detection device A, a radar 2 that detects the surrounding sea, a gyro compass 4 and a log 6 for obtaining navigation information of the own ship, and a log 6 for obtaining seabed depth information. A sounding probe 5 and a sonar 7 for collecting information on underwater obstacles are installed on the hull.

Sonar 7 is installed at the bow of the ship to monitor the forward and lateral directions of the ship, but in order to compensate for the orientation of ultrasonic sound rays due to temperature differences, temperature sensors (not shown) are installed at two points near the hull waterline and the bottom of the ship. ) to estimate the temperature difference at each water depth and perform temperature compensation for the ultrasonic sound beam.

The chart digitizing device B is composed of a line sensor (or video camera) 3, a digitizing unit 11, and a storage unit 13. This nautical chart digitizing device B uses a line sensor 3 to read an existing nautical chart in advance, converts it into digital data using a digitizing unit 11, and stores it in a storage unit 13 as a digital nautical chart.

Further, the calculation display section C is composed of a data processing unit 16, a high-density CR7 display unit 8, a navigation channel selection unit 15, and a danger determination unit 17.

Among them, the data processing unit 16 includes the ship position measuring device 1,
Measurement data from the gyro compass 4, sounding instrument 5, and log 6 are input, and the video signals from the radar 2 and sonar 7 are also digitized.10. After quantizing the video or drawing elements in 12, the data processing unit 16.

Further, a large number of digital nautical charts stored in advance in the storage unit 13 are read into the data processing unit 16 after a navigation channel selection unit 15 searches for a necessary sea area, as will be described in detail later.

A high-density CR7 display unit 8 connected to the output side of the data processing unit 16 displays various data superimposed within the data processing unit 16 on a CRT in high-density color.
The display provides the operator with real-time processed surrounding information.

The navigation route selection unit 15 also includes a route designation input section 1.
4 is connected, and the operator inputs the route designation input section 14.
When the navigation route of the own ship is specified, the navigation route selection unit 15 retrieves the corresponding digital nautical chart from the storage unit 13 and outputs it to the data processing unit 16.

Furthermore, the danger determination unit 17 is the data processing unit 1
Based on the data superimposed in step 6 and displayed on the high-density CR7 display unit 8, the possibility of the own ship running aground or colliding with another ship is determined. When the danger judgment unit 17 judges that the situation around the own ship is dangerous, the danger judgment unit 17 displays the dangerous part on the high-density CR7 display unit 8, and further issues an alarm from the danger judgment output section 18. This alerts the operator and outputs dangerous ship position data.

Function In the above configuration, when using this device, when the operator operates the route designation input section 14 according to the navigation route plan, the navigation route selection unit 15 inputs the information to the storage unit 13.
The data processing unit 16. searches the digital nautical charts stored in advance in the data processing unit 16, and automatically selects a navigation waterway of a scale corresponding to the specified route in the convergence area or the ocean. C is input.

This data processing unit 16 automatically superimposes and matches the coastline on the radar image from the radar 2 inputted through the digitization unit with the overseas line on the nautical chart, determines the own ship's position, and displays the displayed contents in Figure 3. As shown in the example, high density CR7
It is displayed on the display unit 8. Similarly, other ships are automatically detected and tracked from the radar 2 output input through the digitization unit 10, and the ship position, course, and speed are vectorized as data on the other ship (2) and converted into high-density C
It is displayed on the R7 display unit 8.

Here, if the danger determination unit 17 determines that there is a risk of collision with a ship, a warning is issued from the danger determination output section 18, and at the same time, a mark is displayed on the high-density CR7 display unit 8 as shown in In addition, to determine the danger of the coordinates, the 20m isowater line (an example of a dangerous water depth that differs depending on the ship) is read from the digital nautical chart and displayed as shown in ■. distance) and TCPA
Even when the (closest approach time) is reached, a warning and data are output from the danger judgment output unit 18 to avoid running aground on shallow water or reefs.

Furthermore, the image of the sonar 7 is digitized by the digitization unit 12, corrected according to the ambient conditions of the ultrasonic sound ray in the data processing unit 16, and displayed on the high-density CR7 display unit 8 as shown in ■. Similarly, CPA and TCPA will issue warnings to prevent grounding.

The remaining ship position measuring device 1 constituting the ship position information detection device A,
Gyro Co.: The outputs of the Nopass 4, sounding probe 5, and log 6 are also processed by the data processing unit 16 at the same time as the radar 2 output, and are used to accurately understand own ship ■, and determine the current position of own ship ■. Depth is also displayed as ■.

The high-density CR7 display unit 8, which displays such various information, uses color displays to identify the coastline ■, constant depth lines ■, navigational markers ■, own ship ■, other ships ■, ■, underwater obstacles ■, etc., so that the operator can It is structured so that it can be clearly judged.

Effects of the Invention The embodiment of the ship route monitoring device according to the present invention is as described above, and can achieve the following effects.

The nautical chart, the situation of other ships, and underwater obstacle information are superimposed and displayed on the display, allowing you to quickly and accurately judge the situation around your own ship and navigate while avoiding collisions with other ships or grounding. It is possible to improve safety and reduce the number of ship operating personnel.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a ship equipped with the device of the present invention, FIG. 2 is a block diagram of an embodiment, and FIG. 3 is a schematic diagram showing a display example of a high-density CR7 display unit. A...Ship position information detection device, B...Nautical chart digitization device, C...Calculation display unit, 1...Ship position measurement device, 2
... Radar, 3... Line sensor, 4... Gyro/compass, 5... Sounding instrument, 6... Log, 7...
...Sona, 8...High-density CR7 display unit, 10
, 11.12... digitization unit, 13...
Memory unit 13.14...route designation input section, 15.
...Navigation waterway selection unit, 16...Data processing unit, 17...Danger judgment unit, 18...Danger judgment output unit.

Claims (1)

[Scope of Claims] A ship position information detection device mounted on a ship and detecting information around the ship; and a nautical chart digitization device that digitizes an existing nautical chart to create a digital nautical chart and stores it as digital data. , Search and input the digital nautical chart of the sea area where the ship is located from the chart digitization device, input the output of the ship position information detection device, digitize it, superimpose it on the digital nautical chart, and display it on the built-in display unit. What is claimed is: 1. A vessel route monitoring device, comprising: a calculation display unit that monitors a situation around the ship by means of the superimposed display on a display unit built into the calculation display unit.