JP2003214891A - System for supporting rescue of person falling overboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for supporting rescue of a person falling overboard capable of reliably storing the location of an accident of falling overboard for a ship provided with an absolute location detecting means such as a GPS receiver. <P>SOLUTION: The system for supporting the rescue of the person falling overboard is provided with a self-location detecting means (10), such as the GPS receiver, for detecting the absolute location of the ship as the location of one's own ship, a means (40) for announcing the occurrence of the accident of falling overboard, and a means (20) for saving information on the occurrence of falling overboard and automatically saving the update detected location of one's own ship and present time when the announcement of the occurrence of the accident of falling overboard is received. It is preferable that the location of the occurrence of falling overboard is displayed in a polar coordinate system in which the location of one's own ship is centered. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fallen person rescue support system for assisting search and rescue of fallen people from ships.

[0002]

2. Description of the Related Art Conventionally, for the purpose of preventing collision of a ship or the like, a radar device is used to detect the movement status of other ships around the ship and display them as polar targets around the ship as a target. It is known how to do it.

A GP which receives the current position and the current time of each satellite from three or more mobile satellites, calculates the ship position based on the satellite information and the reception time, and displays the GP.
S (Global Positioning System) is also rapidly spreading, and recently, due to the downsizing and cost reduction of its receivers, not only large and medium-sized ships such as freighters, passenger ships, fishing boats, but also yachts and motor boats for leisure Many are starting to be installed in small vessels. In the display device of this GPS receiver, the latitude / longitude (absolute position) of the ship is displayed as a position of the ship by a bright spot with an accuracy of several tens of meters on a nautical chart represented by the Mercator projection or the like. A structure has also been adopted in which the position of the ship, which changes with the navigation of the ship, is displayed while being stored in memory, so that the track of the ship is displayed on the nautical chart.

The specification of the patent application (Patent Document 1) entitled "Movement status detection system for moving body group" related to the applicant's earlier application discloses that a group of vessels that are in close proximity are detected by a GPS receiver. There is disclosed a configuration in which the respective positions of the respective ships are reported to each other by wireless communication, and the positions of the respective ships in addition to the positions of the respective ships are displayed on the nautical chart.

[0005] In small boats for leisure, passengers often accidentally fall into the sea, and even if they wear a life jacket, there is a risk of freezing death and fatigue death in low water temperature areas. Because of this, it is necessary to fight for the moment and rescue the fallen people. However, there is a problem that it is time-consuming to rescue people because it is difficult to visually recognize a person who has fallen into the water at night or under stormy weather. Conventionally, in a ship equipped with a GPS receiver, when such a waterfall accident occurs, the update of the own ship position is immediately stopped by operating the event key,
The ship's position where this update was stopped is regarded as the point where the waterfall accident occurred and was set as the target point for rescue (WPT). By displaying and on the enlarged nautical chart, a system is planned to support the maneuvering to make an express train to the target point.

[0006]

[Patent Document 1] Japanese Patent Laid-Open No. 3-354709

[0007]

In the above conventional GPS receiver, the set target point and the own ship position are displayed as absolute positions on the nautical chart. It is necessary to determine the distance and direction to the ship, that is, the relative positional relationship between the own ship and the falling point, which requires a great deal of skill in manipulating the ship, and there is a problem that it takes time to rescue.
Further, in the conventional GPS receiver, since the operation of the event key and the setting of the target point are manually performed when the waterfall accident occurs, there is a risk that the operation opportunity may be missed due to the rush of rescue work. There is a strong problem that it will cause a fatal hindrance to subsequent rescue operations.

[0008]

[Means for Solving the Problems] A water drop rescue support system according to the present invention includes a ship position detecting means for detecting the absolute position of a ship equipped with this system as a ship position, and a water drop accident occurrence. Means to report, and when receiving the notification of the occurrence of the water drop accident, the own ship position means automatically saves the latest own ship position and the current time detected as the water drop occurrence position and the water drop occurrence time. And means.

[0009]

The absolute position of the ship is detected by the ship position detecting means such as a GPS receiver. The latest detected own ship position and the current time are automatically saved as falling water occurrence information in response to an external report when a falling water accident occurs. Suitably, by calculating the distance and direction between the stored water drop occurrence position and the own ship position, the water drop occurrence position is converted into a relative position centered on the own ship position and displayed on polar coordinates. It

[0010]

FIG. 2 is a block diagram showing the configuration of a water faller rescue support system according to an embodiment of the present invention, which includes a position detecting section 10, a calculation / display processing section 20, a display section 30.
It is composed of an input / output unit 40. The position detector 10 includes a GPS receiver 11 and an input interface circuit 12, and the calculation / display processor 20 includes a CPU 21 and a data memory 22. The display unit 30 includes a drawing processor 31, a display memory 32, and a display device 33, and the input / output unit 40 includes an input / output interface unit 41 and a keyboard 42. The fallen person rescue support system of this embodiment is mounted on a ship.

The GPS receiver 11 of the position detector 10 has three
Based on the information sent from more than one mobile satellite and received by an antenna (not shown) and the time of reception, the ship's position consisting of the latitude and longitude of this ship is calculated, and this ship's position data is input to an input interface circuit. The data is transferred to the CPU 21 of the calculation / display processing unit 20 via 12. The CPU 21 stores the own ship position data and the current time received from the position detection unit 10 in the data memory 22, and, before and after this, transfers the latest own ship position data to the drawing processor 31 of the display unit 30. Drawing processor 31 that received the ship position data
Creates an appropriate image to be displayed on the display screen at a position indicating the position of the ship, such as a bright spot or a figure of a ship, and writes it in the corresponding address of the display memory 32. The display device 33 is
The display data written in the display memory 32 is read at a predetermined cycle and displayed on a CRT, a liquid crystal panel or the like.

In parallel with the processing for displaying the own ship position, the CPU 21 outputs the latest own ship position data to the input / output unit 4.
The data is transferred to a wireless device (not shown) via the input interface circuit 41 of 0, and the position of the own ship is notified to other ships in the vicinity. The CPU 21 receives the position data of the other ship wirelessly transmitted from the other ship and received by the wireless device of this ship via the input / output interface circuit 41, stores the current time in the data memory 22. At the same time, it is transferred to the display unit 30 and displayed. As a result, on the display screen, as illustrated in FIG. 4, the track of the own ship and the tracks of other ships navigating around the ship are displayed together with the nautical chart including the latitude and longitude scales. As for the position of the own ship, a circle with a predetermined radius centering on the position of the ship is displayed in order to distinguish it from the positions of other ships.

The CPU 21 receives the heading transmitted from a navigation instrument (not shown) such as a gyro via the input / output interface circuit 41, and updates the heading stored in the data memory 22 with the latest data. To do.

When the occurrence of a waterfall accident is recognized by another crew member, the keyboard 42 and the emergency buttons installed at various places on the ship are operated, and a specific signal notifying that is sent via the input / output interface circuit 41. It is transferred to the CPU 21. Upon receiving this notification, the CPU 21 immediately
The flow shifts to the fallen person rescue support routine illustrated in the flowchart of FIG.

The CPU 21 uses the latest own ship position stored in the data memory 22 as a specific position (in this example, a falling position or a destination position to be rushed for rescue), and the current time as a specific position set time. (In this example, the time of occurrence of the falling water) is stored (step A), and a buzzer (not shown) is sounded via the input interface circuit 41 to issue an alarm of occurrence of the falling water inside the ship (step B). Subsequently, the CPU 21 instructs the display unit 31 to change the display to the water drop rescue support screen (step C), and transfers the specific position and the heading stored in the data memory to the display unit 30 (step D). . The display unit 3 which has received the display change command and the display data from the CPU 21.
0 changes the display screen in the normal time illustrated in FIG. 4 to the screen for assisting rescue of a fallen person in an emergency as illustrated in FIG. 1.

Next, the CPU 21 calculates and displays the ship speed including the direction and speed based on the latest several ship positions stored in the data memory 22 and the storage time added to these positions. (E). After this, CPU2
1 indicates whether or not a signal requesting to receive a new own ship position is issued from the position detecting unit 10 (step F), or a signal requesting to receive a new heading is issued from the interface circuit 41. Whether or not (step I), and further, whether or not the cancellation of the rescue support routine is instructed (step K) is mixed, the processes from step F to step K are repeated.

When the CPU 21 updates the own ship position with the new own ship position data received from the position detection unit 10, the CPU 21 stores the updated own ship position in the data memory 22 and transfers it to the display unit 30 (step G ), The updated distance from the ship's position to the specific position, the direction looking at the destination position from the ship's position, and the line connecting the ship's position and the destination position based on the calculated direction and bow direction. The azimuth of minutes is calculated as the target local position, and the calculated distance and direction and the target local position are transferred to the display unit 30 (step H). The drawing processor 31, which has received these data, updates the display position of the blinking bright point indicating the destination position based on the distance and the direction from the own ship position, and also updates the destination region position of the digital display. Further, when the CPU 21 updates the heading according to the new heading data received via the input / output interface circuit 41, the CPU 21 transfers the updated heading to the display unit to update the display (step J). .

As shown in FIG. 1, the falling water rescue assistance screen displayed on the display unit 31 is drawn with polar coordinates centered on the ship's position displayed in a graphic of the ship, with the heading of the ship directly above. The specific position (destination position) is displayed there as a bright spot that blinks with an appropriate size. In addition, a circle with a predetermined radius centered on the ship's position is displayed on the screen as a scale of distance. The radius of this circle is 0.5 nautical miles, 1 nautical mile, and 2 nautical miles.
It is appropriately changed by a command from the keyboard 42 such as nautical miles. When the blinking bright point indicating the specific position deviates from the outside of the circle that is the scale of the distance, it is displayed in a state of circumscribing the circle while keeping the direction from the center.

Further, at the upper part of the screen, the position of the own ship and the position of the destination are digitally displayed by latitude and longitude, and the heading, the target region position, and the distance from the position of the own ship to the destination are also digitally displayed. . Further, a vector indicating the speed of the ship is displayed at the ship position at the center of the polar coordinates. That is, the length of this vector represents the speed of the ship, and the direction of this vector represents the traveling direction of the ship. This traveling direction does not necessarily coincide with the bow direction because the ship is affected by tidal currents and waves. In addition, the display screen shows the time when the waterfall occurred, the current time,
The elapsed time from the time of occurrence of water fall is also digitally displayed.

The operator of this vessel refers to the display screen of FIG. 1 and steers the steering wheel to steer the vessel toward the destination position. Along with this, the direction of the bow and the direction of the velocity vector approach the target regional position, and the ship sails toward the destination position. When it is determined in step K that the cancellation command has been issued from the keyboard 42 due to the end of rescue of the person who dropped the water, the original display screen shown in FIG. 4 is restored, and the rescue of the person who dropped the person is performed. The support routine is complete.

Although the drop-water rescue assistance system according to the present invention has been described with reference to the embodiment, the present invention can be variously modified and implemented. Of such modified embodiments, only the main ones are listed below.

In place of the configuration in which the CPU 1 detects the own ship speed from the change with time of the own position detected by the GPS receiver, the GP
A configuration in which the S receiver detects the own ship speed by utilizing the Doppler effect and transfers it to the CPU 1.

[0023] Instead of displaying the heading right above the screen, the north is displayed directly above the screen.

For a ship such as a gyroscope which is not equipped with a heading detection instrument, a structure in which the ship speed direction is directly above instead of the heading direction and is displayed on the screen.

[0025] Instead of displaying the direction of the specific position as viewed from the own ship as the target local position, the absolute direction of the line segment connecting the own ship and the specific position is displayed as the target local position.

A configuration in which the vector display of the ship speed shown in FIG. 1 is omitted.

Instead of detecting the absolute position of the ship by the GPS receiver, the position of the ship is detected by measuring radio waves such as various types of Loran.

[0028]

As described in detail above, the own position is detected by the fallen person rescue support system, the GPS receiver, etc. according to the present invention, the specific position is saved in accordance with an external command, and the saved specific position is saved. By calculating the distance and direction between the ship and its own position, this specific position is converted to a relative position centered on this moving body and displayed on the polar coordinates including the rear of the ship. This eliminates the need for the operator to determine the distance and direction from the display screen to the target location of the water drop, that is, the relative positional relationship between the ship and the water drop point, so that even an unskilled person can easily, swiftly, and surely operate the ship.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an example of a display screen of a fallen person rescue support system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a fallen person rescue support system of the above embodiment.

FIG. 3 is a flowchart for explaining an example of calculation / display processing by the CPU 21 of the fallen water rescue support system of FIG.

FIG. 4 is a conceptual diagram showing an example of a display screen by the fallen person rescue support system of FIG.

[Explanation of symbols]

10 Position detector 11 GPS receiver 20 Arithmetic / display processing unit 30 Display 40 I / O section

Continued front page    F term (reference) 2F029 AA04 AB01 AB07 AC02 AC04                       AC06 AC08 AC09 AC18                 5H180 AA25 BB15 FF04 FF22 FF25                       FF32

Claims (4)

[Claims] 1. A drop water rescue support system mounted on a ship, comprising: own ship position detecting means for detecting the absolute position of the ship as the own ship position; means for reporting the occurrence of a water drop accident; When receiving the notification of the occurrence of the accident, the own ship position detecting means is provided with a water drop occurrence information storage means for automatically saving the latest own ship position and the current time detected as the water drop occurrence position and the water drop occurrence time A rescue support system for fallen people. 2. The falling water occurrence position according to claim 1, wherein the distance and direction between the falling water occurrence position stored by the falling water occurrence information storage means and the own ship position detected by the own ship position detection means are calculated. A fallen person rescue support system characterized by comprising display means for converting the ship's position into a relative position centered on the ship's position and displaying it on polar coordinates. 3. The drop-water rescue support system according to claim 2, further comprising display means for displaying the speed of the ship in a vector format at the center of the polar coordinates. 4. A water drop person rescue support system, wherein the display means sets polar coordinates with the heading or the heading of the ship directly above.