JP2016045738A - Sea visibility monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to keep truck of a visible range on the sea in a wide area.SOLUTION: A ship 2 cruising on the sea and a control facility 3 for controlling the navigation of the ship 2 are communicatively connected. The ship 2 includes a visibility measuring unit 21 for measuring a visible range and a positioning unit 22 for positioning the location of the ship, and sequentially transmits the visible range measured by the visibility measuring unit 21 and the location of the ship measured by the positioning unit 22 to the control facility 3 as it cruises.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a marine visibility monitoring system that measures and monitors visibility at sea.

  For example, a visibility meter is installed at a key point of an expressway, and a distance (visibility) that can be seen with the naked eye is measured. Among such visibility meters, optical visibility meters are known that are capable of highly accurate and stable measurement without being affected by contamination of the optical system, measurement environment, or aging (for example, Patent Document 1). This visibility meter irradiates the light beam from the light emitter, and arranges the light receiver in a direction inclined with respect to the optical axis of the light emitter in the irradiation region of the light beam. The two light receiving portions provided adjacent to the light receiver individually receive the beam light incident on the condenser lens from different directions, and calculate the visibility based on the light reception level.

JP 2001-116691 A

  By the way, at sea, a visibility meter is fixedly installed at a predetermined position, and when a fog or haze occurs and the visibility falls below a predetermined distance, the port controller activates navigation restrictions. . However, only visibility at a predetermined position can be acquired. For example, visibility in the entire port area cannot be obtained, and therefore it is difficult to properly execute navigation restrictions. In other words, there is a need for a system and apparatus that can always acquire the latest visibility in a wide area.

  In addition, as a method for measuring visibility at sea, researches have been conducted to observe the amount of sea fog generated from radar and calculate visibility from the obtained particle distribution. However, in the case of radar, it is necessary to direct the antenna beam horizontally to avoid sea surface reflection, so it is difficult to observe fog, that is, to measure visibility, in environments and conditions where precipitation particles are present. It becomes.

  Therefore, an object of the present invention is to provide a marine visibility monitoring system capable of grasping visibility at sea in a wide area.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a ship navigating the sea and a control facility for controlling the navigating of the ship are communicably connected, and the ship measures visibility. A visibility measuring means for positioning and a positioning means for positioning the own ship position, and the visibility measured by the visibility measuring means and the own ship position measured by the positioning means are sequentially controlled in accordance with navigation. It is a marine visibility monitoring system characterized by transmitting to equipment.

  According to this invention, the visibility is sequentially measured by the visibility measuring means as the ship navigates, and the own ship position is measured by the positioning means, and the visibility and the own ship position are transmitted to the control equipment.

  According to a second aspect of the present invention, in the marine visibility monitoring system according to the first aspect, the control facility has visibility information indicating visibility at each position based on the visibility received from the ship and the own ship position. Creating and distributing the visibility information to the ship.

  According to a third aspect of the present invention, in the marine visibility monitoring system according to the first or second aspect, the ship includes radar exploration means for exploring an object by radar, and the radar exploration means explores the object. A warning sound is generated when the distance from the ship position to the object is within a predetermined distance and the visibility at the ship position is less than the predetermined distance.

  According to a fourth aspect of the present invention, in the marine visibility monitoring system according to any one of the first to third aspects, the ships are connected to each other so that they can communicate with each other, the visibility measured by the visibility measuring means and the positioning means The ship position measured in step (3) is transmitted to another ship.

  According to the invention of claim 1, the visibility at each position (each ship position) is transmitted to the control equipment as the ship navigates, so the visibility at a number of points is acquired in the control equipment, It becomes possible to grasp the visibility at sea over a wide area. In addition, since the visibility and the ship position are sequentially transmitted from the ship, it is possible to grasp the latest visibility. As a result, for example, it becomes possible to know the latest visibility in the entire port area, and it becomes possible for the port controller to appropriately execute navigation restrictions.

  According to the invention of claim 2, the visibility information indicating the visibility at each position is distributed to the ship, so the visibility at each position can be grasped in the ship, and safer and more appropriate navigation is possible.

  According to the invention of claim 3, when the ship and the object are close to within a predetermined distance and the visibility at the ship position is not more than the predetermined distance, that is, when it cannot be confirmed with the naked eye even when approaching the predetermined distance. A warning sound is emitted. For this reason, it is possible to prevent contact between the ship and the object even in a situation where visibility is poor.

  According to the invention of claim 4, since information including visibility and own ship position is transmitted and received between the ships, it is possible to grasp the visibility at sea in each ship in a wide area. Moreover, the range which can be communicated can be expanded by relaying information between ships and communicating with control equipment. Furthermore, by sharing information by communicating between military and fishing fleets, it is possible to operate on a small limited network.

1 is a schematic configuration diagram illustrating a marine visibility monitoring system according to an embodiment of the present invention. It is a schematic block diagram of the ship in the marine visibility monitoring system of FIG. It is a figure which shows the display state of the visibility on the monitor of the ship of FIG. It is a figure which shows the relationship between the distance of the ships in embodiment of this invention, and visibility.

  The present invention will be described below based on the illustrated embodiments.

  1 to 4 show an embodiment of the present invention, and FIG. 1 is a schematic configuration diagram showing a marine visibility monitoring system 1 according to this embodiment. This marine visibility monitoring system 1 is a system that measures and monitors visibility at sea, and a vessel 2 that navigates the ocean and a control facility (VTMS control center) 3 that controls the navigation of the vessel 2 can communicate freely. Further, the ships 2 are connected to each other so as to be able to communicate with each other.

  Here, in this embodiment, the case where the visibility in the sea in the harbor W is measured and monitored will be mainly described, and a plurality of ships 2 sail in the bay W.

  A plurality of buoys (buoys) 101 are arranged on the sea in the gulf W, and a fixed visibility meter 102 is installed in a part of the buoy 101 and a predetermined place on the gulf. This fixed visibility meter 102 has a configuration equivalent to the visibility measurement unit 21 of the ship 2 described later, and periodically measures visibility, and the measurement result (visibility value) and position (or identification information) are determined on a predetermined location on the shore. Is transmitted to the nearest VTS station 103 among the VTS (Vessel Traffic System) stations 103 installed in the network. Further, each VTS station 103 transmits the received visibility value and the position of the fixed visibility meter 102 to a VTMS (Vessel Traffic Management System) station 31 of the control equipment 3.

  As shown in FIG. 2, the ship 2 mainly includes a visibility measurement unit (visibility measurement unit) 21, a positioning unit (positioning unit) 22, a radar search unit (radar search unit) 23, a monitor unit 24, and a horn. A unit 25 and a central processing unit 26 for controlling them are provided. Here, the visibility measuring unit 21 and the positioning unit 22 may not be provided in all the ships 2, and may be provided only in some of the ships 2. In other words, it is sufficient that at least one ship 2 in navigation is provided. Moreover, the ship 2 provided with the visibility measuring part 21 and the positioning part 22 may be a ship for visibility measurement, and may be a general merchant ship.

  The visibility measuring unit 21 is a visibility meter that measures the visibility at the current location, and may be any type of visibility meter such as a transmittance method, a forward scattering method, and a backscattering method. It consists of a forward scattering type visibility meter.

  The positioning unit 22 measures the own ship position, that is, the current location. In this embodiment, the positioning unit 22 is composed of a GPS (Global Positioning System), and calculates the latitude and longitude of the current location based on a received signal from a GPS satellite. .

  The radar search unit 23 is a device that searches for an object (target) using a radar. Specifically, by transmitting pulsed radio waves from the antenna and receiving reflected waves from other objects such as other ships 2 around the antenna, the object is explored and up to the object. The distance is calculated.

  The monitor unit 24 is a display that displays a search result by the radar search unit 23 and visibility information to be described later, and the horn unit 25 is a device that emits an alarm sound toward the outside of the ship 2.

  And the ship 2 provided with the visibility measuring part 21 and the positioning part 22 is the ship's position measured by the visibility measured by the visibility measuring part 21 and the positioning part 22 sequentially with the navigation of the ship 2. Sent to control facility 3 That is, the visibility and the ship position are periodically measured and measured, and transmitted to the nearest VTS station 103. In response to this, the visibility and the ship position are transmitted from the VTS station 103 to the VTMS station 31 of the control equipment 3.

  In addition, each ship 2 has a function of storing visibility information distributed from the control equipment 3 to be described later in a memory, and displaying the visibility at a point / position designated on the monitor unit 24 on the monitor unit 24. That is, the visibility information includes visibility at each position on the sea and is stored and updated in the memory each time it is received from the control facility 3. When the position P is designated on the map (including the radar image) displayed on the monitor unit 24, the visibility R at the position P is read from the memory and displayed on the monitor unit 24.

  For example, as shown in FIG. 3, when the first position P1 is designated, a circle having a radius of visibility R1 at this point P1 is displayed. Similarly, when the second position P2 is designated, A circle whose radius is the visibility R2 at this point P2 is displayed. In addition, circles having radii of visibility R1 and R2 are displayed, and visibility R1 and R2 are numerically displayed. Here, in this embodiment, as long as an operation for clearing the display is not performed, the visibility R in which the position P is designated is displayed on the same screen at the same time. As a result, it is possible to easily and appropriately grasp which position P has the long or short visibility R, and it is possible to select an appropriate navigation route.

  Further, each ship 2 searches for an object by the radar exploration unit 23, and when the distance from the ship position to the object is within a predetermined distance and the visibility at the ship position is less than the predetermined distance. A warning sound is emitted from the horn unit 25. That is, as shown in FIG. 4, when the ship 2 and the object (other ship 2) are close to the predetermined distance L and the visibility R from the ship 2 is equal to or less than the predetermined distance L, that is, the predetermined distance When the opponent cannot be confirmed with the naked eye even when approaching L, an alarm is sounded. Thereby, even if the ship 2 and the other ship 2 etc. are approaching to the closest distance L, even if they cannot be confirmed with the naked eye, the opponent (other ship 2) can be notified of the approach by the alarm sound.

  Here, the predetermined distance is set based on a distance that may cause a contact if sailing as it is, a distance that can be avoided by hearing an alarm sound, and the like. The visibility at the ship position may be the visibility measured by the visibility measurement unit 21 in the ship 2 provided with the visibility measurement unit 21, or the visibility information distributed from the control equipment 3 may be used. May be. On the other hand, the ship 2 that does not include the visibility measuring unit 21 uses the visibility of the visibility information distributed from the control facility 3.

  The control equipment 3 includes a VTMS station 31 and a control server 32 that can communicate with each other, and based on the visibility received from each fixed visibility meter 102, the visibility received from each ship 2, and the own ship position. It has a function of creating visibility information indicating visibility and delivering this visibility information to the ship 2. That is, every time the VTMS station 31 receives visibility and position from the fixed visibility meter 102 or the ship 2, visibility information (distribution) is stored and updated so that visibility at the relevant point on the sea is displayed. Figure). In this way, the visibility information always indicates the latest visibility at each position.

  And visibility information is distributed to each ship 2 by the control server 32 which is a Web server which distributes various information. At this time, the visibility information may be distributed from the control server 32 to each ship 2 periodically or may be distributed by each ship 2 accessing the control server 32 and acquiring the visibility information. Good. Further, the ships 2 to be distributed include all the ships 2 that can communicate with the control equipment 3 regardless of whether or not the visibility measuring unit 21 is provided.

  Next, the operation of the marine visibility monitoring system 1 having such a configuration will be described.

  First, the visibility is periodically measured by each fixed visibility meter 102, and the measurement result is transmitted to the control equipment 3, and the ship 2 provided with the visibility measuring unit 21 and the positioning unit 22 is periodically operated while navigating. The visibility and the own ship position measured and measured are transmitted to the control equipment 3. In response to this, the visibility information is created and updated by the VTMS station 31 of the control facility 3, and the visibility information is distributed to each ship 2 by the control server 32 as described above.

  In each ship 2, the distributed visibility information is stored in the memory, and when the position P is designated on the map displayed on the monitor unit 24, the visibility R at the position P is changed to the monitor unit as shown in FIG. 24. Further, as shown in FIG. 4, the radar exploration unit 23 searches for an object (another ship 2 or the like), the distance from the ship position to the object is within a predetermined distance L, and the ship When the visibility R at the position is equal to or less than the predetermined distance L, an alarm sound is emitted from the horn unit 25.

  As described above, according to the marine visibility monitoring system 1, the visibility at each position is transmitted to the control equipment 3 along with the navigation of the ship 2 including the visibility measuring unit 21 and the positioning unit 22. In the facility 3 and the like, visibility at a number of points can be acquired, and visibility at sea can be grasped in a wide area. In addition, since the visibility and the ship position are sequentially transmitted from the ship 2, it is possible to grasp the latest visibility. As a result, it becomes possible to obtain the latest visibility in the entire port area, and it becomes possible for the port controller to appropriately execute navigation restrictions.

  Further, since visibility information indicating visibility at each position is distributed to each ship 2, visibility at each position can be grasped in each ship 2, and safer and more appropriate navigation is possible. In addition, when the position P is designated on the map displayed on the monitor unit 24, the visibility R at the position P is displayed on the monitor unit 24. Therefore, the visibility R at each position P can be easily and appropriately grasped. .

  Furthermore, when the ship 2 and the object (the other ship 2) are close to within a predetermined distance and the visibility at the ship position is not more than the predetermined distance, that is, when the distance to the predetermined distance cannot be confirmed with the naked eye Since an alarm sound is generated, it is possible to prevent contact between the ship 2 and the object even in a situation where visibility is poor.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the ship 2 includes one visibility measuring unit 21, but may include a plurality of visibility measuring units 21. For example, the visibility measuring unit 21 may be disposed at the bow and stern of the ship 2.

  In addition, each ship 2 may be provided with a device and a program for selecting and formulating a navigation route that ensures the visibility is a predetermined distance or more based on the visibility information, that is, the visibility of each position. Navigation is possible. At this time, such a program may be incorporated into a program for selecting and formulating a low fuel consumption navigation route based on wind and wave conditions.

  Moreover, although the case where the control equipment 3 includes the VTMS station 31 was explained, the control equipment is a facility for monitoring a ship to which a shipowner, a ship management company, a military, etc. belong, a weather company or an educational institution, etc. It may be a facility for collecting information for use.

  Furthermore, between the ships 2, information including the measured visibility and the measured ship position may be transmitted to the nearby ships 2. Thereby, since the information including the visibility and the own ship position is transmitted and received between the ships 2, it is possible to grasp the visibility at sea in each ship 2 in a wide area. Moreover, the range which can be communicated can be expanded by relaying information between the ships 2 and communicating with the control equipment 3. Furthermore, by sharing information by communicating between military and fishing fleets, it is possible to operate on a small limited network.

1 Sea Visibility Monitoring System 2 Ship 21 Visibility Measurement Unit (Visibility Measurement Means)
22 Positioning part (Positioning means)
23 Radar exploration part (radar exploration means)
24 monitor unit 25 horn unit 26 central processing unit 3 control equipment 31 VTMS station 32 control server 101 buoy
102 Fixed visibility meter 103 VTS station W Harbor P Position R Visibility

Claims (4)

A ship navigating at sea and a control facility for controlling the navigating of the ship are connected to each other freely.
The ship includes visibility measuring means for measuring visibility and positioning means for measuring the position of the ship, and the visibility measured by the visibility measuring means and the self-measured by the positioning means in order with navigation. Sending the ship position to the control facility;
This is a marine visibility monitoring system. The control equipment creates visibility information indicating visibility at each position based on the visibility received from the ship and the ship position, and distributes the visibility information to the ship.
The marine visibility monitoring system according to claim 1. The ship includes radar exploration means for exploring an object using a radar. The radar exploration means explores the object, the distance from the ship position to the object is within a predetermined distance, and the ship When the visibility at the ship position is less than the predetermined distance, a warning sound is emitted.
The marine visibility monitoring system according to any one of claims 1 and 2. The ships are communicatively connected,
The ship transmits the visibility measured by the visibility measuring means and the own ship position measured by the positioning means to another ship.
The marine visibility monitoring system according to any one of claims 1 to 3, wherein:

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