JP2019008557A - Wireless communication device, wireless communication start method, and wireless communication program - Google Patents

Abstract

To provide a wireless communication device capable of starting wireless communication easily and quickly with respect to a ship found by visual inspection without keeping an eye on the ship.SOLUTION: A wireless communication device 1 includes a direction sensor 33, an own device position acquiring section 12, an AIS information acquiring section 11, a ship specifying section 15a, and a wireless communication section 13. The direction sensor 33 is disposed in a handset terminal 30 having a microphone 32 for voice communication and detects a direction pointed by the handset terminal 30. The own device position acquiring section 12 acquires the position of the own device. The AIS information acquiring section 11 acquires a position and MMSI of a ship existing around the own device. The ship specifying device 15a specifies the ship existing in the direction pointed by the handset terminal 30 on the basis of the direction detected by the direction sensor 33, the position of the own device and the position of the other ship. The wireless communication section 13 transmits a call signal by a DSC to the ship specified by the ship specifying device 15a using the MMSI acquired by the AIS information acquiring section 11.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to a wireless communication device that is provided on a ship and performs wireless communication with another ship.

  Conventionally, when a calling signal is transmitted to a ship using DSC, identification information (MMSI) for identifying the ship is required. Patent Documents 1 to 3 disclose techniques for assisting input of identification information when transmitting a calling signal by DSC.

  In Patent Document 1, an ID and a position transmitted by another ship to a base station are intercepted, and other ships existing around the ship are detected using a radar device. The inter-ship communication device of Patent Literature 1 specifies an ID based on intercepted information for a ship specified on a radar image. This inter-ship communication device uses the specified ID to make a call to start wireless communication with respect to the ship.

  Patent Document 2 is a configuration in which an AIS device and a DSC radio are connected. The AIS device displays AIS information received from surrounding ships in a plotter format or a list format. The AIS information includes ship identification information. In Patent Literature 2, when a ship is selected by the AIS device, the DSC radio performs a call using identification information included in the AIS information of the ship.

  Similar to Patent Document 2, Patent Document 3 acquires AIS information and displays it in a list format. At this time, the other ships are displayed in the order of the high possibility of approaching the ship. Thereby, the ship which should be called can be called quickly.

  Moreover, although it is not the technique regarding wireless communication, the technique which acquires the information of the said other ship by directing the remote control for operating marine equipment to the other ship is known (patent documents 4 and 5).

JP-A-10-84311 JP 2011-175512 A Japanese Patent No. 4203038 Japanese Patent Laid-Open No. 2006-88234 Japanese Patent Laid-Open No. 2006-90347

  However, in Patent Documents 1 to 3, it is necessary to specify a ship to be a target of wireless communication on a display screen. Therefore, for example, when it is desired to start wireless communication with a ship found visually, this ship has to be specified on the display screen, which is troublesome and cannot start wireless communication quickly.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is a radio that can start wireless communication easily and in a short period of time with respect to a ship that has been found by visual inspection, without keeping an eye on the ship. To provide a communication device.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to a first aspect of the present invention, a wireless communication device having the following configuration is provided. That is, this wireless communication device includes an orientation sensor, an own device position acquisition unit, a ship information acquisition unit, a ship identification unit, and a wireless communication unit. The direction sensor is disposed in a handy terminal having a microphone for voice calls, and detects the direction indicated by the handy terminal. The own device position acquisition unit acquires the position of the own device. The ship information acquisition unit acquires the position and MMSI of a ship existing around the ship. The ship specifying unit specifies a ship that exists in the direction indicated by the handy terminal based on the direction detected by the direction sensor, the position of the ship, and the position of the ship acquired by the acquisition unit. The wireless communication unit transmits a calling signal by DSC to the ship specified by the ship specifying unit using the MMSI.

  According to the second aspect of the present invention, the following wireless communication starting method is provided. That is, in this wireless communication start method, the following steps are performed. That is, the direction detected by the direction sensor arranged in the handy terminal having the microphone for voice call is acquired. Acquire the position of your aircraft. Acquire the ship position and MMSI around the ship. Based on the azimuth, the position of the own aircraft, and the position of the ship, a ship that exists in the azimuth indicated by the handy terminal is identified, and the MMSI is used for the identified ship by DSC. Send a ringing signal.

  According to the third aspect of the present invention, a wireless communication program having the following configuration is provided. That is, this wireless communication program performs the following processing. Processing for obtaining the direction detected by the direction sensor arranged in the handy terminal having the microphone for voice call is performed. A process of transmitting the azimuth to the wireless communication device is performed. After the calling signal by DSC is transmitted to the ship existing in the azimuth by the wireless communication device and wireless communication is started, a process of performing a voice call with the ship through the wireless communication device is performed.

  Thereby, when the ship which wants to start a wireless communication is found, this ship can be specified only by actually pointing with a handy terminal, without specifying the position of this ship on a display part. Therefore, for example, wireless communication can be started easily and for a short time with respect to a ship found visually, without taking an eye off the ship.

1 is a block diagram of a wireless communication device 1 according to an embodiment of the present invention. The perspective view of a radio | wireless communication apparatus. The flowchart which shows the process which starts radio | wireless communication with the ship which exists in the direction which a handset terminal points. The figure explaining the 1st attitude | position and 2nd attitude | position of a handset terminal. The figure explaining the process which specifies a ship from the detection result of a direction sensor. The figure which shows a mode that a selection screen is displayed on a handset terminal. The figure which shows a mode that a confirmation screen is displayed on a handset terminal. The flowchart which shows the process which starts the radio | wireless communication with the ship which exists in the direction which the handset terminal points to based on a modification.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a wireless communication device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the wireless communication device 1.

  The wireless communication device 1 is a device for performing DSC (Digital Selective Calling) communication and performing wireless communication (specifically, a voice call) between the local station and the partner station. The wireless communication device 1 is installed in, for example, a ship, a lighthouse and a port. That is, the radio communication device 1 can function as a land radio station (coast station) that communicates with a ship, for example, and can also function as a radio station (ship station) established on a ship. In the following description, communicating with a radio station established on another ship is simply referred to as communicating with another ship.

  As shown in FIG. 1, the wireless communication device 1 includes a wireless device body 10 and a handset terminal (handy terminal) 30. An AIS device 41 and a GPS receiver 42 are connected to the wireless communication device 1 (wireless device main body 10).

  The AIS device 41 uses the AIS (Automatic Identification System) to acquire other ship information (specifically, the position (absolute position), name, destination, etc. of the other ship, hereinafter referred to as AIS information)). To do. Specifically, the AIS device 41 receives AIS information transmitted by another ship via an AIS antenna (not shown). The AIS device 41 transmits AIS information of other ships to the wireless communication device 1. The AIS device 41 can also transmit AIS information of the ship.

  The GPS receiver 42 acquires the position of the own aircraft (own ship). Specifically, the GPS receiver 42 receives a positioning signal from a GPS satellite via a GPS antenna (not shown). The GPS receiver 42 obtains the position of the ship (specifically, the position of the GPS antenna, the absolute position of the earth reference) based on the positioning signal. The GPS receiver 42 transmits the calculated position of the ship to the wireless communication device 1. Note that the position of the ship may be obtained using a GNSS other than GPS.

  As shown in FIG. 1, the wireless device main body 10 includes an AIS information acquisition unit (ship information acquisition unit) 11, an own device position acquisition unit 12, a wireless communication unit 13, a main body calculation unit 15, and a main body display unit 16. And a main body operation unit 17 and a main body connection unit 18.

  The AIS information acquisition unit 11 acquires AIS information of other ships transmitted by the AIS device 41. The AIS information acquisition unit 11 outputs the AIS information acquired from the AIS device 41 to the main body calculation unit 15. In the present embodiment, the radio main unit 10 and the AIS device 41 are directly connected by a cable. The radio device main body 10 and the AIS device 41 may be connected via an inboard network (LAN).

  The own device position acquisition unit 12 acquires the position calculated by the GPS receiver 42 as the position of the own device (own device position acquisition step). The own aircraft position acquisition unit 12 outputs the position of the own ship acquired from the GPS receiver 42 to the main body calculation unit 15. In the present embodiment, the radio main body 10 and the GPS receiver 42 are directly connected by a cable. The radio device main body 10 and the GPS receiver 42 may be connected via an inboard network (LAN).

  The AIS information acquisition unit 11 and the own device position acquisition unit 12 are connectors for connecting the respective cables to the radio device main body 10 or parts for converting signals received via the respective cables. The wireless device main body 10 may be connected to the AIS device 41 and the GPS receiver 42 wirelessly instead of wired. In this case, an antenna or the like used for receiving these data corresponds to the AIS information acquisition unit 11 and the own device position acquisition unit 12.

  The wireless communication unit 13 is connected to the antenna 13a and performs processing related to radio waves transmitted and received between the ship and the other ship. The wireless communication unit 13 has a DSC function, and can request the start of wireless communication to a specific other ship using MMSI (identification number that is identification information for identifying a wireless station). Specifically, when the wireless communication unit 13 starts wireless communication with another ship, the wireless communication unit 13 transmits a call signal including the MMSI of the other ship, a channel (frequency) used in the wireless communication, an emergency level of communication, and the like to the outside. To do. The other ship responds to the calling signal and the channel used for the wireless communication is determined, so that it is possible to perform a voice call by wireless communication between the ship and the other ship.

  The main body calculation unit 15 is a calculation processing unit such as an FPGA, an ASIC, or a CPU. The main body calculation unit 15 is configured to execute various controls related to the wireless communication device 1 by reading a program stored in the ROM or the like into the RAM or the like and executing the program. For example, when the wireless communication is started, the main body calculation unit 15 performs a process of specifying the other ship selected by the user or a process of outputting the specified other ship's MMSI to the wireless communication unit 13.

  The main body display unit 16 is configured by a liquid crystal display, for example, and can display various information related to wireless communication. The content displayed on the main body display unit 16 is controlled by the main body calculation unit 15.

  The main body operation unit 17 is for performing an operation of designating a partner station to communicate with or designating a frequency used for communication with the partner station. The main body operation unit 17 includes, for example, a dial, numeric keys, arrow keys, a touch panel, and the like. An operation performed on the main body operation unit 17 is converted into an electric signal and output to the main body calculation unit 15.

  The main body connection unit 18 is a portion on the radio device main body 10 side among the portions related to the connection between the radio device main body 10 and the handset terminal 30. In the present embodiment, since the radio device main body 10 and the handset terminal 30 are connected by a cable, the main body connection unit 18 receives a connector for connecting this cable to the radio device main body 10 or via this cable. It is a part that performs conversion of the processed signal. The wireless device main body 10 and the handset terminal 30 may be connected wirelessly instead of wired. In this case, the antenna on the radio device main body 10 side for communicating with the handset terminal 30 corresponds to the main body connection unit 18. The radio device body 10 and the handset terminal 30 may be connected via an inboard network (wireless LAN, wired LAN).

  The handset terminal 30 is a terminal for a user to carry out a voice call with another ship. As long as the handset terminal 30 is a type that the user uses in his / her hand, the handset terminal 30 may be a type used by being placed on the user's ear or may be a type used by being positioned at the mouth. As shown in FIG. 1, a handset terminal 30 includes a speaker 31, a microphone 32, an orientation sensor 33, an inclination sensor (attitude detection sensor) 34, a terminal calculation unit 35, a terminal display unit 36, and a terminal operation unit. 37 and a terminal connection unit 38.

  The speaker 31 outputs sound in accordance with an electrical signal input from another ship via the wireless device main body 10. The microphone 32 acquires a voice such as a user's speech and outputs an electrical signal corresponding to the voice or the like. The speaker 31 and the microphone 32 are connected to the terminal calculation unit 35.

  The azimuth sensor 33 is configured to detect the azimuth pointed by the handset terminal 30 with an absolute azimuth based on the earth. As the direction sensor 33, for example, a magnetic direction sensor, a GPS compass, a gyro compass, or the like can be used. The azimuth pointed by the azimuth sensor 33 is the azimuth pointed by an imaginary line L1 (FIG. 2) from the base end to the tip end of the elongated casing. In other words, it is the direction indicated by the virtual line from the lower end to the upper end of the terminal display unit 36. In other words, on the front side of the handset terminal 30 (the surface on which the speaker 31, the microphone 32, the terminal display unit 36, the terminal operation unit 37, etc. (at least one) are arranged), this is the direction indicated by the upper side. The direction detected by the direction sensor 33 is output to the terminal calculation unit 35. In addition, if the azimuth | direction sensor 33 can detect the azimuth | direction which the handset terminal 30 points with respect to the bow azimuth | direction of a ship, the handset terminal 30 will be based on the detected azimuth | direction and the bow azimuth | direction acquired from the bow azimuth | direction sensor. It is also possible to calculate the absolute orientation of the earth reference.

  The tilt sensor 34 includes a gyro sensor, an acceleration sensor, or the like, and detects the posture (tilt) of the handset terminal 30. The attitude of the handset terminal 30 is the rotation angle of each of the three directions of the handset terminal 30. The attitude of the handset terminal 30 detected by the tilt sensor 34 is output to the terminal calculation unit 35.

  The terminal calculation unit 35 is a calculation processing unit such as an FPGA, an ASIC, or a CPU. The terminal computing unit 35 is configured to execute various controls related to the handset terminal 30 by reading a program stored in a ROM or the like into a RAM or the like and executing the program.

  The terminal display unit 36 is configured by a liquid crystal display, for example, and can display various information related to wireless communication. The content displayed on the terminal display unit 36 is controlled by the terminal calculation unit 35.

  The terminal operation unit 37 is for performing operations such as adjusting the volume during a voice call and instructing the start and end of a voice call. The terminal operation unit 37 includes, for example, a dial, numeric keys, arrow keys, a touch panel, and the like. The operation performed on the terminal operation unit 37 is converted into an electric signal and output to the terminal calculation unit 35.

  Next, processing for starting wireless communication with another ship designated by the user will be described with reference to FIGS. In the present embodiment, it is possible to start wireless communication for another ship that exists in the direction indicated by the handset terminal 30 without specifying another ship using another display unit or the like. Thereby, it is possible to start wireless communication easily and quickly with respect to another ship found visually. Hereinafter, detailed processing will be described with reference to the flowchart of FIG.

  The terminal computing unit 35 first determines whether or not the vessel instruction mode is being executed (S101). The ship instruction mode is a mode that is executed when the other ship that starts wireless communication is instructed using the handset terminal 30. The handset terminal 30 has, for example, a voice call mode as a mode other than the ship instruction mode. The voice call mode is a mode executed when performing a voice call by wireless communication. In the marine vessel instruction mode, as shown in FIG. 4, it is considered that the handset terminal 30 is used in a posture in which the virtual line L1 faces the horizontal direction (hereinafter referred to as a first posture). On the other hand, in the voice call mode, it is considered that the handset terminal 30 is used in a posture in which the virtual line L1 faces the vertical direction (hereinafter referred to as a second posture). In consideration of the above points, in the present embodiment, when it is detected based on the detection result of the tilt sensor 34 that the first posture or a posture similar to the first posture is detected, the terminal calculation unit 35 sets the ship instruction mode to Control to be executed. In order to prevent the vessel instruction mode from being executed without the intention of the user, it is detected that the posture has become the first posture or a similar posture under a certain condition (for example, a state where a predetermined key is pressed). In such a case, the boat instruction mode can be executed.

  When the ship instruction mode is being executed, the terminal calculation unit 35 determines whether or not a confirmation operation has been performed on the terminal operation unit 37 (S102). The confirmation operation is an operation for confirming the direction indicated by the handset terminal 30. The user sets the handset terminal 30 to the ship instruction mode, and performs a confirmation operation in a state where the handset terminal 30 is directed to another ship that desires to start wireless communication. The confirmation operation is an operation of pressing a predetermined button, for example. When the confirming operation is performed, the terminal computing unit 35 outputs the orientation detected by the orientation sensor 33 at the timing when the confirming operation is performed to the radio device main body 10 (specifically, the body computing unit 15) (S103). .

  The main body calculation unit 15 creates a ship list and updates it at a predetermined timing. A ship list | wrist is a list | wrist which shows the MMSI and position, etc. of the other ship which exists around the own ship. In the present embodiment, the names of other ships are also described in this ship list. The main body calculation unit 15 creates a ship list based on the AIS information acquired from the AIS device 41 via the AIS information acquisition unit 11, and updates the ship list at a predetermined frequency. In addition, since the range in which the AIS information transmitted by other ships reaches is limited, the number of other ships input to the main body calculation unit 15 is not so large. Therefore, the main body calculation unit 15 creates a ship list in which all the acquired AIS information is described. Instead of this configuration, other ships in the vicinity of the ship may be extracted, and a ship list composed only of the extracted other ships may be created.

  Based on the ship list, the azimuth input from the handset terminal 30 in step S103, and the position of the own aircraft detected through the own device position acquisition unit 12, the main body calculation unit 15 (the vessel specifying unit 15a). The other ship existing in the direction detected by the direction sensor 33 is specified (S104). Hereinafter, a specific description will be given with reference to FIG. The position of the other ship described in the ship list is an absolute position. The position of the ship detected by the GPS receiver 42 is also an absolute position. Therefore, as shown in FIG. 5, the user's instruction can be grasped by extending a virtual line (instructed azimuth line) from the position of the ship to the azimuth detected by the azimuth sensor 33. However, the position of the other ship described in the ship list indicates a predetermined point (for example, the position of the GPS antenna or the center position of the other ship) of each other ship. Is very unlikely to overlap. Therefore, in this embodiment, a specific area is created based on the indicated azimuth line, and other ships located in the specific area are specified.

  Specifically, when the direction of the indicated azimuth line is A, the area from A−α to A + α is set as the specific area. In the present embodiment, a distance condition is also set as the condition for the specific region. Because, in this embodiment, since it is assumed that the user visually indicates the other ship that is found by the handset terminal 30, the distance at which the other ship can be visually recognized can be set as the distance condition of the specific range. The other ship designated by the user can be specified more accurately. For example, when the distance at which other ships can be visually recognized is B, the range in which the distance from the aircraft is closer to B is set as the specific area. The method for setting the specific area is not limited to the above (for example, the distance condition may be eliminated). Further, without using the concept of the specific distance, for example, a distance from another ship to the indicated bearing line may be obtained, and the other ship having the distance within a threshold value may be specified.

  Next, the main body calculation unit 15 determines whether there are a plurality of identified other ships (S105). When there are a plurality of other ships identified, as shown in FIG. 6, the main body calculation unit 15 instructs the terminal calculation unit 35 to display a selection screen on the terminal display unit 36 (S106). A selection screen is a screen for making a user select (confirm) the other ship which starts radio | wireless communication among the specified some ship. Moreover, in this embodiment, the information regarding other ships is displayed on the selection screen so that the user can select other desired ships. Information about other ships includes MMSI, name, distance from own ship, direction from own ship, and the like. In addition, as information regarding other ships, other information (for example, destinations of other ships) may be further displayed, or display of some of the information described above may be omitted.

  Moreover, in this embodiment, the display order of the other ship in the selection screen is defined based on the information regarding the other ship. In the example shown in FIG. 6, other ships are displayed in order of increasing distance from the ship. That is, since the other ships are displayed side by side from the top to the bottom, the ship closest to the ship is displayed at the top. The display order of other ships may be determined based on other information (for example, the size of the ship) instead of the distance from the own ship. Moreover, the structure which can switch the information which determines the display order of another ship according to a user's instruction | indication (operation) may be sufficient. After the user selects another ship that performs wireless communication, the terminal calculation unit 35 transmits information specifying the other ship selected (determined) by the user to the main body calculation unit 15.

  Moreover, the main body calculating part 15 determines whether the specified ship is one, when there are not two or more specified other ships (S107). When the identified ship is one, as shown in FIG. 7, the main body calculation unit 15 instructs the terminal calculation unit 35 to display a confirmation screen on the terminal display unit 36 (S108). The confirmation screen is a screen for allowing the user to confirm whether or not to start wireless communication with the identified ship. In the present embodiment, information on other ships is also displayed on the confirmation screen, similarly to the selection screen. Thereby, the user can confirm whether the ship which he pointed is specified. The terminal calculation unit 35 transmits information specifying the other ship confirmed (determined) by the user to the main body calculation unit 15.

  Further, when the identified ship is zero (NO in step S107), the main body calculation unit 15 causes the terminal calculation unit 35 to display on the terminal display unit 36 that the ship has not been detected. An instruction is given (S109).

  When the ship to start wireless communication is determined in step S106 and step S108, the main body calculation unit 15 reads out the MMSI of this ship from the ship list (S110). Then, the wireless communication unit 13 is instructed to transmit a DSC paging signal using the read MMSI (S111). Thereby, when there is a response from the other ship of the transmission destination, wireless communication is established, and a voice call with the other ship pointed by the user with the handset terminal 30 becomes possible.

  Next, a modification of the above embodiment will be described. In the description of this modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted. In this modification, the process (step S106 in the above embodiment) performed when a plurality of other ships are specified as a result of the ship specifying unit 15a specifying another ship in the specific region is different from that in the above embodiment. Other processes are the same as those in the above embodiment. Therefore, the flowchart of FIG. 8 is different from the flowchart of FIG. 3 only in steps S206-1 and S206-2. Therefore, only the processes of steps S206-1 and S206-2 will be described below.

  In Step S206-1, main part operation part 15 specifies the other ship which exists in the shortest distance from an own machine among the specified other ships. In step S206-2, a confirmation screen (a screen similar to FIG. 7) is displayed for the other ship specified in step S206-1 (the other ship present at the closest distance from the own ship). That is, in this modified example, when a plurality of other ships are specified, the user does not select which other ship to communicate with, and after the confirmation by the user, a call signal is sent to the nearest other ship from the own ship. It is the structure which transmits. Thereby, compared with the case where a selection screen like FIG. 6 is displayed, wireless communication can be started rapidly.

  As described above, the wireless communication device 1 according to the present embodiment includes the direction sensor 33, the own device position acquisition unit 12, the AIS information acquisition unit 11, the ship identification unit 15a, and the wireless communication unit 13. And a wireless communication start method is performed. The direction sensor 33 is disposed in the handset terminal 30 having the microphone 32 for voice call, and detects the direction indicated by the handset terminal 30. The own device position acquisition unit 12 acquires the position of the own device. The AIS information acquisition unit 11 acquires the position and MMSI of a ship existing around the aircraft. The ship specifying unit 15a specifies a ship that exists in the direction indicated by the handset terminal 30 based on the direction detected by the direction sensor 33, the position of the ship, and the position of the ship acquired by the AIS information acquisition unit 11. To do. The wireless communication unit 13 transmits a calling signal by DSC to the ship specified by the ship specifying unit 15a using the MMSI acquired by the AIS information acquisition unit 11.

  Thereby, when the ship which wants to start a wireless communication is found, this ship can be specified only by actually pointing with the handset terminal 30, without specifying the position of this ship on a display part. Therefore, for example, wireless communication can be started easily and for a short time with respect to a ship found visually, without taking an eye off the ship.

  Further, in the wireless communication device 1 of the present embodiment, the handset terminal 30 includes a terminal operation unit 37 that performs a confirming operation for confirming the pointing direction. The ship specifying unit 15 a specifies a ship existing in the direction detected by the direction sensor 33 at the timing when the confirmation operation is performed on the terminal operation unit 37.

  This makes it clear which direction the ship wants to communicate with the ship, so that the ship desired by the user can be accurately identified.

  In addition, the wireless communication device 1 of the present embodiment includes a terminal display unit 36 provided in the handset terminal 30. Information on the ship specified by the ship specifying unit 15 a is displayed on the terminal display unit 36 before the calling signal is transmitted by the wireless communication unit 13.

  Thereby, the user can confirm whether or not the ship he / she desires is the transmission destination of the calling signal.

  Further, in the wireless communication device 1 of the present embodiment, the terminal display unit 36 displays a confirmation screen for transmission of the calling signal to the ship. The wireless communication unit 13 transmits a call signal by the DSC after an instruction to start wireless communication with the ship displayed on the terminal display unit 36 is input.

  Thereby, since a call signal is transmitted after making it confirm with a user, it can prevent starting wireless communication to an incorrect vessel.

  In the wireless communication device 1 of the present embodiment, when the ship specifying unit 15a specifies a plurality of ships, the terminal display unit 36 displays information about the ship for each ship, and the destination of the call signal by DSC A selection screen for accepting selection of the ship to be set is displayed.

  Thereby, even if there are a plurality of ships in the direction indicated by the handset terminal 30, the calling signal can be transmitted to the ship desired by the user.

  Further, in the wireless communication device 1 of the present embodiment, the terminal display unit 36 displays the vessels side by side in an order based on the information about the vessels on the selection screen.

  Thereby, the user can specify easily the ship which wants voice communication from the ship displayed on the selection screen.

  Further, in the wireless communication device 1 of the modified example, when the ship specifying unit 15a specifies a plurality of ships, the wireless communication unit 13 does not accept the selection of the ship and performs DSC on the ship closest to the own ship. The ringing signal by is transmitted.

  Since there is a high possibility that the user desires to transmit a calling signal to a ship close to the aircraft, the user's trouble can be reduced by performing the above processing. Furthermore, for a ship close to the ship, for example, for the purpose of collision avoidance, a call signal is transmitted immediately, which is more preferable.

  Further, in the wireless communication device 1 of the present embodiment, the AIS information acquisition unit 11 acquires the position of the ship and the MMSI based on the AIS information received by the AIS device 41.

  Thereby, the position of a ship and MMSI can be acquired easily.

  In the wireless communication device 1 of the present embodiment, the handset terminal 30 can execute a ship instruction mode for instructing a ship that is a target of wireless communication and a voice call mode for performing a voice call. The ship instruction mode and the voice call mode are switched based on the detection result of the inclination sensor 34 that detects the attitude of the ship.

  Thereby, the specific start of a ship and a subsequent voice call can be performed smoothly.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  <Handy Terminal> The handset terminal 30 described in the above embodiment is an example, and may be configured not to include the terminal display unit 36, for example. Further, the handset terminal 30 may not be elongated (for example, substantially square in front view). Even in this case, for example, the direction indicated by the upper end in front view can be handled as the direction indicated by the handset terminal. Further, the speaker 31 can be omitted from the handset terminal 30. In this case, the handset terminal 30 is used to acquire the user's voice or the like (converts the voice or the like into an electrical signal), and the communication partner's voice is provided at a place other than the handset terminal 30 (for example, the radio main body 10) Output from the speaker.

  <Main body computing unit 15 and terminal computing unit 35> It has been explained that the terminal computing unit 35 may perform at least part of the processing described as being performed by the main body computing unit 15 in the above embodiment, or that the terminal computing unit 35 performs. The main body calculation unit 15 may perform at least part of the processing. For example, the main body calculation unit 15 may perform processing for specifying a ship that exists in the direction indicated by the handset terminal 30.

  <Omission of Confirmation Screen and Selection Screen> In the above embodiment, the confirmation screen or the selection screen is displayed after the ship is specified, but this processing may be omitted. That is, the configuration may be such that the call signal is transmitted without the user's confirmation after the ship is identified. Thereby, wireless communication can be started in a shorter time. In order to avoid sending a calling signal to an incorrect ship, it is preferable to perform this process only when only one ship is specified or when the degree of urgency is high.

  <Other Ship Information Display Before Confirming Operation> In the above embodiment, the information on the other ship is displayed on the confirmation screen or selection screen after the vessel is specified, but the other ship information is displayed before the confirming operation. It may be a configuration. That is, the handset terminal 30 transmits the azimuth detected by the azimuth sensor 33 to the radio main body 10 even before the confirmation operation is performed, and wirelessly transmits information on other ships existing in the azimuth indicated by the handset terminal 30 at the present time. Obtained from the machine body 10 and displayed on the terminal display unit 36.

  <Acquisition method of MMSI other than AIS> For example, when a system is constructed that periodically receives the current position and MMSI from a ship in a predetermined area and transmits it to the ship in the area, instead of AIS This system can be used.

  <Application to portable terminal> In the above embodiment, an example using the handset terminal 30 which is a part (slave unit) of the wireless device main body 10 as the “handy terminal” has been described. If it is a simple terminal, another terminal can be used as a handy terminal. For example, a mobile terminal such as a smartphone can be used as a “handy terminal”. In this case, the portable terminal transmits the azimuth pointed to by the portable terminal to the radio device main body 10 using a built-in azimuth sensor (transmission step). Further, the mobile terminal and the wireless device main body 10 are connected by a wireless LAN or the like, and perform a voice call with another ship using a microphone and a speaker of the mobile terminal (voice call step). When a mobile terminal such as a smartphone is used as a handy terminal, the handy terminal has a built-in GNSS antenna and GNSS receiver, and the GNSS receiver performs calculation to obtain the position of the own device. May be. Moreover, the structure which a handy terminal communicates with the exterior and acquires the present position and MMSI of a ship directly may be sufficient.

1 wireless communication device 10 wireless device body 11 AIS information acquisition unit (ship information acquisition unit)
12 Self-machine position acquisition part 13 Wireless communication part 15 Main body calculating part 15a Ship specific part 30 Handset terminal (handy terminal)
31 Speaker 32 Microphone 33 Direction sensor 34 Tilt sensor (Attitude detection sensor)
35 Terminal Calculation Unit 36 Terminal Display Unit 37 Terminal Operation Unit

Claims (12)

An orientation sensor that is disposed on a handy terminal having a microphone for voice calls and detects the orientation indicated by the handy terminal;
The own device position acquisition unit that acquires the position of the own device;
A ship information acquisition unit that acquires the position and MMSI of a ship existing around the ship;
Based on the azimuth, the position of the own aircraft, and the position of the ship, a ship specifying unit that specifies a ship existing in the azimuth indicated by the handy terminal;
A wireless communication unit that transmits a calling signal by DSC using the MMSI to the ship specified by the ship specifying unit;
A wireless communication device comprising: The wireless communication device according to claim 1,
The handy terminal includes a terminal operation unit for performing a confirming operation for confirming a pointing direction,
The said ship specific | specification part specifies the ship which exists in the azimuth | direction which the said azimuth | direction sensor detected at the timing when the said confirmation operation was performed by the said terminal operation part. The wireless communication device according to claim 1 or 2,
A terminal display unit provided in the handy terminal;
Information on a ship specified by the ship specifying unit is displayed on the terminal display unit before a call signal is transmitted by the wireless communication unit. The wireless communication device according to claim 3,
The terminal display unit displays a confirmation screen about the transmission of the calling signal to the ship,
The wireless communication unit transmits a calling signal by DSC after an instruction to start wireless communication with a ship displayed on the terminal display unit is input. The wireless communication device according to claim 4,
The said terminal display part displays the selection screen which displays the information regarding a ship for every said ship, and receives selection of the ship set as a transmission destination of the calling signal by DSC, when the said ship specific | specification part specifies several ships. A wireless communication device characterized by: The wireless communication device according to claim 5,
The said terminal display part arranges and displays the said ship side by side in the order based on the information regarding a ship in the said selection screen, The radio | wireless communication apparatus characterized by the above-mentioned. The wireless communication device according to any one of claims 1 to 3,
When the ship specifying unit specifies a plurality of ships, the wireless communication unit transmits a calling signal by DSC to a ship closest to the own ship without accepting selection of the ship. Wireless communication device. The wireless communication device according to any one of claims 1 to 7,
The wireless communication device includes a wireless device main body having at least the wireless communication unit, and a handset terminal for performing a call,
A wireless communication device using the handset terminal as the handy terminal. The wireless communication device according to any one of claims 1 to 8,
The said ship information acquisition part acquires the position and MMSI of a ship based on the AIS information which the AIS apparatus received, The radio | wireless communication apparatus characterized by the above-mentioned. The wireless communication device according to any one of claims 1 to 9,
The handy terminal can execute a ship instruction mode for instructing a ship that is a target of wireless communication and a voice call mode for performing a voice call, and the detection result of the attitude detection sensor that detects the attitude of the handy terminal The radio communication device according to claim 1, wherein the ship instruction mode and the voice call mode are switched. Obtain the direction detected by the direction sensor placed on the handy terminal that has a microphone for voice calls,
Get the position of your aircraft,
Obtain the ship position and MMSI around the ship,
Based on the azimuth, the position of the own aircraft, and the position of the ship, a ship that exists in the azimuth indicated by the handy terminal is specified,
A wireless communication start method, comprising: transmitting a paging signal by DSC to the identified ship using the MMSI. A process of acquiring a direction detected by a direction sensor arranged in a handy terminal having a microphone for voice calls;
A process of transmitting the azimuth to a wireless communication device;
A process of performing a voice call with the ship via the wireless communication device after a call signal by DSC is transmitted to the ship existing in the direction by the wireless communication device and wireless communication is started;
A wireless communication program comprising:

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