JP2011175512A - Target identification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AIS device, allowing effective calling for a specific target by using a DSC radio set and reducing a load of the DSC radio set. <P>SOLUTION: The target identification device includes a receiving part for receiving AIS information including identification information; a storage part storing the AIS information received by the receiving part; a display part for displaying a sign of a target, based on the AIS information received by the receiving part; a selection operation part for selecting one sign from one or more signs displayed in the display part; an interface part for connecting the DSC radio set to the outside; a call designation operation part for receiving operation to designate the target which is identified by the sign selected by the selection operation part, as a call target; and a communication means for transferring the identification information of the target which is identified by the sign selected, when the call designation operation part is operated, to a communication machine. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a target identification apparatus that enables efficient target calling in cooperation with a communication device (for example, a DSC (Digital Selective Calling) radio device) having a calling function based on identification information.

  2. Description of the Related Art Automatic ship identification devices (AIS (Automatic Identification System) devices) have been put into practical use in order to prevent mutual collisions between ships and to facilitate control that grasps the movement of ships. The ship automatic identification device transmits its own AIS information (including identification information (MMSI code), ship name, position, course, speed, destination, etc.) using VHF band radio waves. A function to receive outgoing AIS information is provided.

  In addition, DSC radio devices are widely used overseas for safety communication of ships. The DSC radio is obtained by adding an automatic call function (DSC function) by digital communication to a VHF radio apparatus, and can be used for ship distress, emergency, safety communication, and the like.

  When a specific ship is called using a DSC radio, an MMSI (Maritime Mobile Service Identity) code that is identification information of the ship is required. Therefore, it has been proposed to selectively call the specific other ship using the MMSI code in the AIS information transmitted from the specific other ship and received by the AIS device of the ship (for example, Patent Documents). 1).

Japanese Patent No. 4203038

  The DSC wireless device of Patent Document 1 is a device that fetches and sorts AIS information of all ships, reads out the MMSI code from the AIS information selected by the user, and makes a call. In general, many wireless communication devices are equipped with a simple control unit (CPU), and there is a problem that it is excessively burdensome to perform analysis and sorting of such AIS information. In addition, it is inefficient to transfer all AIS information to the DSC radio that is the downstream apparatus when viewed from the AIS apparatus, and to accept the sort or specific ship (target) designation by the DSC radio.

  The present invention is effective for a specific target by transferring only identification information of a target (ship) selected by a user as identification information of a call target to a communication device having a calling function such as a DSC radio. It is an object of the present invention to provide a target identification device that enables simple calling and reduces the burden on a communication device.

  The invention of claim 1 is based on the receiving unit that receives target information including target identification information, the storage unit that stores the target information received by the receiving unit, and the target information received by the receiving unit. A communication unit having a display unit for displaying a sign, a selection operation unit for accepting an operation of selecting one sign from one or a plurality of signs displayed on the display unit, and a selective calling function using the identification information An interface unit for external connection, a call designation operation unit for accepting an operation for designating a target identified by the indicator selected by the selection operation unit as a call target, and the call designation operation unit when operated. Communication means for transferring the identification information of the target identified by the selected sign to the communication device.

  The present invention is further characterized in that the display unit can switch the display mode of the target sign to a plurality of different display modes.

  According to the present invention, in the above invention, the display unit displays a first display mode in which signs of all targets that have received the identification information are displayed, and a target that has received the identification information is narrowed down based on the target information. The target sign can be displayed in the second display mode in which only the target sign extracted by the narrowing down is displayed.

  Further, the present invention is the above invention, wherein the target information includes current position information of the target, and the display unit sets the target mark to a distance and direction from the device based on the current position information of the target. Displayed in a plotter format to be displayed at a corresponding position, and the selection operation unit selects the signs according to the operation in order of increasing or decreasing distance from the own device.

  According to this invention, the user can easily select a specific target by displaying on the display unit the sign of the target that has received the target information and accepting the operation by the selection operation unit. By transferring the identification information of the selected target to a communication device having a selective calling function using the identification information, it is possible to selectively call a specific target without imposing a burden on the communication device.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the front panel of the ship automatic identification device which is embodiment of this invention. It is a block diagram of the internal structure of the ship automatic identification device. It is a figure which shows the transition of the screen displayed on the display of the same ship automatic identification device. It is a flowchart which shows operation | movement when the DSC key of the ship automatic identification device is turned on.

  A ship automatic identification device (AIS device) according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view of a ship automatic identification device, and FIG. 2 is a block diagram of the ship automatic identification device. As shown in FIGS. 1 and 2, the ship automatic identification device 1 is connected to a DSC radio 2 to constitute another ship calling system.

  The ship automatic identification device 1 transmits AIS information of its own ship and receives AIS information of other ships using radio waves in the VHF band. The AIS information is information including data such as ship name, MMSI code, current position, course, speed, destination, and load.

  The ship automatic identification device 1 includes a display 30 and displays the received AIS information of other ships on the display 30. The display mode will be described later with reference to FIG. The user can operate the DSC radio 2 to call another ship by selecting the target icon or display column of the other ship displayed on the display 30 and turning on the DSC key 35. .

  In FIG. 1, a display 30 and a plurality of key switch groups 31 to 36 are provided on the front panel of the ship automatic identification device 1. The display 30 is a substantially square liquid crystal display, and is provided from the center of the front panel to the left. As described above, the display 30 displays information on other ships that navigate in the vicinity in various display forms. A confirmation (ENT) key 31 (hereinafter referred to as the ENT key 31) is provided on the upper right side of the front panel, an up / down key 32 is provided above and below, and a left / right key 33 is provided on the left and right thereof. In addition, a key switch group including a display mode (DISP MODE) key 34 and a clear (CLEAR) key 36 is provided in the central portion on the right side of the front panel, and a key switch group including a DSC key 35 is provided below the key switch group. ing. The up / down key 32 and the left / right key 33 are mainly used when an item displayed on the display 30 is selected, and the ENT key 31 is mainly used for an operation of determining a selection content. The display mode key 34 is used when switching the display mode of the AIS information of other ships shown in FIGS. The DSC key 35 is operated when instructing the DSC radio 2 to call the selected other ship. The clear key 36 is a key operated when the operation and display at that time are ended and the original state is restored.

  In FIG. 2, the ship automatic identification device 1 includes a CPU 10, a storage unit 11, a display unit 12, a key input unit 13, an external device interface unit 14, a GMSK modulation demodulation unit 15, a reception unit 16, a reception channel control unit 17, and a transmission channel. A control unit 18, a transmission unit 19, a transmission / reception switching unit 20, and a GPS positioning unit 21 are provided. An antenna 25 is connected to the transmission / reception switching unit 16. Further, the DSC radio 2 is connected to the external device interface 14 as described above.

  CPU10 controls operation | movement of the ship automatic identification device 1 whole. The storage unit 11 stores the AIS information of the own ship and stores the received AIS information of the other ship. The storage unit 11 also stores a call channel table described later (see FIG. 4). The display unit 12 includes a display 30 and displays information input from the CPU 10 on the display 30. The key input unit 13 includes key switch groups 31 to 36, detects a key operation by the user, and inputs it to the CPU 10. The external device interface unit 14 relays communication between the DSC radio 2 and the CPU 10. The GPS positioning unit 21 measures the position of the ship based on the radio wave of the GPS satellite received by the GPS antenna. The position information of the ship that has been measured is transmitted as part of the AIS information of the ship.

  The GMSK modulation demodulator 15 modulates the AIS information of the ship by GMSK (Gaussian minimum shift keying), which is a kind of continuous phase frequency shift keying, and is input from the receiver 16 ( The AIS information of another ship (GMSK modulated) is demodulated and input to the CPU 10. The receiver 16 inputs the received signal to the GMSK modulation demodulator 15. The reception channel control unit 17 sequentially switches the reception channel of the reception unit 16. Thereby, the receiving part 16 can receive the AIS information of the other ship currently transmitted to each channel. The receiving unit 16 and the receiving channel control unit 17 are provided in parallel in two systems, and circulate through the AIS channel in parallel to receive AIS information of other ships. A plurality of AIS channels are set at 25 KHz intervals in the VHF band near 160 MHz.

  The transmission channel control unit 18 sets a transmission channel for transmitting own ship AIS information. As for the transmission channel, an empty channel may be searched from the received content of the receiving unit 16 and the empty channel may be set as the transmission channel. The transmission unit 19 transmits the GMSK-modulated AIS information of the ship by shifting the frequency to the frequency band of the channel set by the transmission channel control unit 18. The transmission / reception switching unit 20 switches the antenna 25 to the transmission unit 19 side during transmission, and switches the antenna 25 to the reception unit 16 side during reception.

  The ship automatic identification device having the above configuration transmits AIS information of its own ship and receives AIS information of other ships. The received AIS information of the other ship is stored in the storage unit 11 and displayed on the display 30. The display mode is, for example, a mode as shown in FIGS. While the AIS information of the other ship is displayed, the user selects any one of the target signs (the icon of the other ship or the AIS information display field of the other ship) using the up / down key 32, and the DSC key 35 Is turned on, the CPU 10 creates a command including the target MMSI code and the communication channel, and transmits the command to the DSC radio 2. With this command, the DSC radio 2 transmits a call message to the target (other ship: partner station). When the DSC radio 2 establishes communication with the partner station, the DSC radio 2 shifts the channel to the designated call channel and enables the user to talk.

  FIG. 3 is a diagram showing a display example on the display 30. 3A to 3D are diagrams showing various display modes of received AIS information. 3E to 3G are diagrams showing examples of display modes when the DSC key 35 is pressed.

  FIG. 3A shows a display example in the plotter format. FIG. 3B shows a display example of a list format. FIG. 3C shows a display example in the approaching ship list (danger list) format. FIG. 3D shows an example of a detailed display screen of AIS information of one target (other ship). These display modes are sequentially switched by operating the display mode key 34.

  When the apparatus is turned on, a plotter format screen shown in FIG. 3A is displayed by default. The ▲ graphic displayed in the center of the circle is an icon indicating the ship, and the △ graphic displayed in the circle is a target icon indicating the other ship. In this display mode, when the user operates the up / down key 32, the display range can be switched in the range of 0.125 nautical miles to 24 nautical miles. Further, when the user operates the left / right key 33, the target icons can be selected in order of closeness or distantness. Specifically, when the user operates the right key 33R, the target icons are selected in ascending order, and when the user operates the left key 33L, the target icons are selected in ascending order. A square shape displayed in the upper left corner of the screen is a target box 51 that is a shape surrounding the currently selected target icon. When the selection of the target icon is switched by a user operation, the display position of the target box 51 is also switched.

  When the ENT key 31 is turned on while any target icon is selected, the display mode is displayed on the detailed display screen (FIG. 3D) of the AIS information of the other ship identified by the target icon. Transition.

  In addition, when the DSC key 35 is turned on while any target icon is selected, the process proceeds to a process of calling the other ship identified by the target icon using the DSC radio 2, and the display The display mode of 30 shifts to FIG.

  When the display mode is switched by the display mode key 34 and when the display range is switched by the operation of the up / down key 32, the selection of the target icon is canceled and no target icon is selected.

  FIG. 3B is a diagram showing an example of a display screen in a list list (TARGET LIST) format. On this screen, a list of information on other ships (targets) that are currently receiving the AIS information is displayed. In this list, among the AIS information, the target MMSI code or ship name, distance (RNG), and direction (BRG) distance with respect to the traveling direction are displayed. AIS information is displayed line by line in order from the closest target. The display area for each line is a target mark of the present invention. When the user operates the up / down key 32 in a state where the list is displayed, targets (rows on which AIS information is displayed) are sequentially selected up and down.

  FIG. 3C is a diagram showing an example of a display screen in the approaching ship list (DNGER LIST) format. The approaching ship list is a list in which only ships (dangerous targets) that are likely to approach within a certain range among other ships (targets) that have received AIS information are extracted. For example, within one hour (TCPA ≦ 1h), within 6 nautical miles (CPA ≦ 6 nm) is extracted and displayed as a dangerous target. This list displays the target MMSI code or ship name, CPA, and TCPA, one line per ship, in the AIS information. The display area for each line is a target mark of the present invention.

  In the figure, AIS information (rows) is sorted in ascending order of CPA, but the user can re-sort TCPA in ascending order by operating the right key 33R. Further, when the user operates the left key 33L, it can be sorted again in ascending order of CPA. When the user operates the up / down key 32 in a state where the approaching ship list is displayed, targets (rows in which AIS information is displayed) are sequentially selected up and down.

  In the display modes of FIGS. 3B and 3C, when the ENT key 31 is turned on while any target is selected, the display mode is the AIS of the other ship identified by the target icon. The detailed information display screen (FIG. 3D) is displayed. Further, when the DSC key 35 is turned on while any target is selected, the process proceeds to a process of calling the other ship identified by the target using the DSC radio 2, and the display 30 The display mode shifts to FIG.

  When the display mode is switched by the display mode key 34, the selection of the target icon is canceled and no target is selected.

  FIG. 3D is a diagram illustrating an example of a detail (DETAIL) display screen. The detail display screen is composed of a plurality of pages (for example, six pages), and all of the AIS information is displayed on the plurality of pages. The page displayed on the display 30 can be switched by the user operating the left / right key 33 while the detail display screen is displayed.

  In addition, when the DSC key 35 is turned on while the detail display screen is displayed, the process proceeds to a process of calling the other ship currently displaying details using the DSC radio 2 and the display 30 displays The mode shifts to FIG.

  If the user operates the clear key 36 while the detail screen is displayed, the detail screen display is terminated and the display mode immediately before (FIGS. 3A to 3C) is restored.

  The display contents of FIGS. 3E to 3G will be described together with the flowchart of FIG.

  FIG. 4A is a flowchart showing a call instruction operation when the user turns on the DSC key 35. In this process, it is monitored that the DSC key 35 is always turned on (S1). When the DSC key 35 is turned on (YES in S1), it is determined whether any one target on the display 30 is currently selected (S2). If the target is selected (YES in S2), the process proceeds to S4. If no target has been selected (NO in S2), a display indicating that no target has been selected is displayed for a certain period of time (S3), and then the display on the display 30 is restored to the original screen (FIGS. 3A to 3D). ) And return to S1.

  In S4, the channel selection screen shown in FIG. In the channel selection screen of FIG. 3E, candidates for call channels are displayed. The user confirms the channel number displayed on the channel selection screen, and turns on the DSC key 35 again if the call channel is acceptable.

  The DSC radio 2 calls the partner station (target) on the normal channel 16 (156.8 MHz) and automatically moves to the call channel when communication is established.

  If the user changes the call channel, the up / down key 32 is operated. The storage unit 11 stores a call channel table as shown in FIG. In the call channel table, call channel numbers are written in a desired order, and are set in advance by the user. In the screen display of FIG. 3E, every time the up / down key 32 is operated, the CPU 10 raises / lowers the call channel in the order described in this table.

  When the call channel is switched by operating the up / down key 32 (YES in S6), the command (channel number) transmitted to the DSC radio 2 is changed and the display of the channel selection screen in FIG. 3 (E) is also changed. (S7), return to S4.

  When the DSC key 35 is turned on again in S5, a call command including the MMSI code of the ship selected as the target and the call channel number set at that time is transmitted to the DSC radio 2 via the external connection interface 14. (S8) A screen (FIG. 3 (F)) indicating that a call is in progress is displayed on the display 30 (S9).

  When the call command is transmitted, the DSC radio transmits a call message to the partner station identified by the MMSI code. When the DSC 2 receives a response from the partner station and communication is established, a message indicating that communication has been established is sent from the DSC radio 2 (YES in S10). Then, the display 30 is switched to a screen (FIG. 3G) indicating that communication has been established. Thereafter, when the clear key 36 is turned on (YES in S12), the display on the display 30 is returned to the original mode (FIGS. 3A to 3D) (S13), and the process returns to S1.

  When the clear key 36 is turned on in the display of FIGS. 3E and 3F, the call by the DSC radio 2 is stopped and the display on the display 30 is restored to the original mode (FIGS. 3A to 3). Return to (D)) and return to S1.

  In the above embodiment, although the ship automatic identification device which is a target identification device which targets a ship was demonstrated, a target is not limited to a ship. Moreover, the system which acquires target information is not limited to AIS.

DESCRIPTION OF SYMBOLS 1 Ship automatic identification device 2 DSC radio | wireless machine 30 Display 31 ENT key 32 Up / down key 33 Left / right key 34 Display mode key 35 DSC key 51 Target box

Claims (4)

A receiving unit for receiving target information including target identification information;
A storage unit for storing target information received by the reception unit;
Based on the target information received by the receiving unit, a display unit for displaying the target sign;
A selection operation unit that receives an operation of selecting one sign from one or a plurality of signs displayed on the display unit;
An interface unit for externally connecting a communication device having a selective calling function using the identification information;
A call designation operation unit for accepting an operation for designating a target identified by the sign selected by the selection operation unit as a call target;
A communication means for transferring the identification information of the target identified by the sign selected at that time to the communication device when the call designation operation section is operated;
A target identification device comprising:   The target identification device according to claim 1, wherein the display unit can switch a display mode of the target sign to a plurality of different display modes.   The display unit displays a first display mode for displaying signs of all targets that have received the identification information, and narrows down the targets that have received the identification information based on the target information, and targets extracted by the narrowing down The target identification device according to claim 2, wherein the target sign is displayed in a second display mode in which only the sign of the target is displayed. The target information includes current position information of the target,
Based on the current position information of the target, the display unit displays the target sign in a plotter format that displays the target in a position corresponding to the distance and direction from the device,
The target identification device according to any one of claims 1 to 3, wherein the selection operation unit selects the sign in order of increasing or decreasing distance from the device according to an operation.

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