JP6711785B2 - Information processing system, information processing apparatus, and program - Google Patents

Description

The present invention relates to an information processing system, an information processing device, and a program that perform information processing related to navigation of a ship.

Patent Document 1 discloses a marine navigation support server system using a wireless communication terminal such as a smartphone. The server system of Patent Document 1 includes a storage unit that stores navigation route information for each size of a ship, a wireless unit, and a control unit. The server system of Patent Document 1 refers to the tide information at the time of transmitting the route information to the wireless communication terminal, and, for example, regarding the route that the height difference between low tide and high tide is different, and there is a possibility of riding on a reef at low tide, It is disclosed that the route information to be transmitted is excluded or a warning is issued.

International Publication No. 2016/147463

Patent Document 1 does not disclose specific information processing for determining a route or the like which cannot be navigated at low tide by referring to the tide information at the time of presenting the route information. It was difficult to accurately present a route that can be navigated.

An object of the present invention is to provide an information processing system and an information processing apparatus capable of presenting a navigation route that can be navigated with high accuracy according to the tide condition.

An information processing system according to the present disclosure includes an information management device and an information processing device. The information management device manages route information indicating routes that the ship can navigate. The information processing device displays the route information acquired from the information management device. The information management device manages a plurality of pieces of route information in association with a plurality of tide levels based on tide level information indicating tide level time changes. The information processing device transmits information for identifying the tide level to the information management device, and obtains from the information management device the communication unit that acquires the specific route information that the vessel can navigate according to the tide level, and the specific route information. And a display unit for displaying.

An information processing device according to the present invention is a device that communicates information with an information management device.

According to the information processing system and the information processing apparatus according to the present invention, it is possible to accurately present a navigable route according to the tide state by using each route information associated with various tide levels based on the tide level information. it can.

FIG. 3 is a diagram for explaining the information processing system according to the first embodiment. Diagram showing the configuration of the mobile terminal in the information processing system Diagram showing the configuration of the server device in the information processing system Diagram for explaining various databases in the information processing system Diagram for explaining tide graph information in an information processing system Figure showing a display example of route information by the information processing system Sequence diagram for explaining the display processing of the route information in the first embodiment Sequence diagram for explaining the update processing of the route information in the first embodiment Diagram for explaining a method of generating route information in an information processing system Diagram for explaining the method of determining the route area in the route information The figure which shows the modification of the display of the route information by an information processing system. FIG. 3 is a diagram for explaining a modified example of the route information generation method.

Embodiments of an information processing system according to the present invention will be described below with reference to the accompanying drawings. In addition, in each of the following embodiments, the same components are denoted by the same reference numerals.

(Embodiment 1)
In the first embodiment, an information processing system 1 that performs guidance display of routes that the ship 10 can navigate will be described with reference to FIGS. 1 to 5.

As shown in FIG. 1, the information processing system 1 according to the present embodiment includes a mobile terminal 2, a server device 3, and an operation support device 11 for a ship 10. Hereinafter, the information processing system 1 is also referred to as the present system 1. In the present system 1, it is assumed that the passenger of the ship 10 carries the mobile terminal 2. The mobile terminal 2 and the server device 3 perform information communication via the network 15 such as the Internet. The mobile terminal 2 is configured to be able to perform information communication with a communication device in the ship 10, such as the operation support device 11.

The present system 1 acquires information regarding the navigation of the ship 10 via the mobile terminal 2 and stores the acquired information in the server device 3. Examples of the information regarding the navigation of the ship 10 include a trajectory log. The system 1 analyzes the information accumulated in the server device 3 to generate the route information indicating the route that the vessel 10 has traveled and is considered to be able to navigate. The route information is managed by the server device 3 and can be downloaded and displayed on the mobile terminal 2.

The maneuvering assistance device 11 is an example of an information processing device for assisting the maneuvering of the ship 10. The maneuvering assistance device 11 is mounted on the ship 10. The maneuvering support device 11 includes a communication unit that performs near field communication such as Wi-Fi (registered trademark) and Bluetooth (registered trademark), or a display unit that displays various types of information. The maneuvering support device 11 is communicatively connected to the mobile terminal 2 via the communication unit, transmits information regarding the ship 10 to the mobile terminal 2, and receives route information and the like from the mobile terminal 2. The steering assist device 11 may be omitted from the system 1 as appropriate.

The configurations of the mobile terminal 2 and the server device 3 according to the present embodiment will be described below.

(Mobile terminal 2)
The configuration of the mobile terminal 2 in the information processing system 1 will be described with reference to FIG.

The mobile terminal 2 is an example of the information processing device according to the present embodiment. The mobile terminal 2 is, for example, a smartphone, and may be various information processing devices such as a tablet terminal, a mobile phone, and a notebook PC (Personal Computer). As shown in FIG. 2, the mobile terminal 2 includes a terminal control unit 20, a terminal storage unit 21, a network communication unit 22, a device communication unit 23, an input unit 24, a display unit 25, and a position information acquisition unit. 26, and.

The terminal control unit 20 includes, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) that realizes a predetermined function in cooperation with software. The terminal control unit 20 controls the operation of the mobile terminal 2. The terminal control unit 20 reads out data and programs stored in the terminal storage unit 21 and performs various arithmetic processes to realize predetermined functions. The terminal control unit 20 may have various functions such as a clock function. The program executed by the terminal control unit 20 may be provided from the network 15 or the like, or may be stored in a portable recording medium.

The terminal control unit 20 may be composed of a dedicated electronic circuit designed to realize a predetermined function, or a hardware circuit such as a reconfigurable electronic circuit. The terminal control unit 20 may be composed of various semiconductor integrated circuits. Examples of various semiconductor integrated circuits include a CPU, MPU, microcomputer, DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), and the like. Hereinafter, the microcomputer is also referred to as a microcomputer.

The terminal storage unit 21 is a storage medium that stores programs and data required to realize the functions of the mobile terminal 2. The terminal storage unit 21 includes, for example, a flash memory. The terminal storage unit 21 includes, for example, a DRAM (Dynamic Random Access Memory) or an SRAM (Static Random Access Memory). The terminal storage unit 21 may temporarily store various information. The terminal storage unit 21 may be configured to function as a work area of the terminal control unit 20.

For example, the terminal storage unit 21 has a map information storage unit 40 and a locus log storage unit 41. The map information storage unit 40 is configured to store map information. The map information is information indicating a map. The map information may be stored in the map information storage unit 40 in advance, for example. The map information may be acquired from the server device 3 or the like via the network 15, for example. The locus log storage unit 41 is configured to be able to store history information indicating the history of the trajectory of the ship 10. The history information stored in the trajectory log storage unit 41 is transmitted to the server device 3, for example. The terminal storage unit 21 may hold tide graph information.

The network communication unit 22 is a module for connecting the mobile terminal 2 to the network 15 via a wireless or wired communication line. The network communication unit 22 is an example of a communication unit that performs communication according to a predetermined communication standard. The predetermined communication standard includes a communication standard such as IEEE (Institute of Electrical and Electronic Engineers) 802.3, IEEE 802.11a/11b/11g/11ac.

The device communication unit 23 is a module for communicatively connecting the mobile terminal 2 to an external device such as the operation support device 11. The device communication unit 23 is an example of a communication unit that performs communication according to a predetermined communication standard. The predetermined communication standard includes USB (Universal Serial Bus), HDMI (High-Definition Multimedia Interface), IEEE 1395, Wi-Fi (registered trademark), Bluetooth (registered trademark), and the like.

The input unit 24 is a user interface for inputting various operations by the user. In the present embodiment, the input unit 24 constitutes a touch panel together with the display unit 25. The input unit 24 is not limited to the touch panel, and may be a keyboard, a button, a switch, or a combination thereof. The input unit 24 is an example of an acquisition unit according to this embodiment.

The display unit 25 is composed of, for example, a liquid crystal display or an organic EL (Electro Luminescence) display. The display unit 25 displays various information such as route information.

The position information acquisition unit 26 is, for example, a GPS module that receives radio waves from a GPS (Global Positioning System) satellite and measures the latitude and longitude of the received point. The position information acquisition unit 26 may be configured not only by the GPS module but also by estimating the position from the gyro sensor, the acceleration sensor, and the propulsion of the ship 10, for example. The position information acquisition unit 26 may be configured to measure the altitude in addition to the latitude and longitude of the received point. Below, the information contained in the radio waves from the GPS satellites is also referred to as GPS information. The position information acquisition unit 26 is an example of a current position detection unit that detects position information indicating the current position such as the measured latitude.

(Server device 3)
Hereinafter, the configuration of the server device 3 in the information processing system 1 will be described with reference to FIG.

The server device 3 is an example of the information management device in the present embodiment. As shown in FIG. 3, the server device 3 includes a server control unit 30, a server storage unit 31, and a server communication unit 32.

The server control unit 30 includes, for example, a CPU or a GPU (Graphics Processing Unit) that realizes a predetermined function in cooperation with software. The server control unit 30 controls the operation of the server device 3. The server control unit 30 reads out data and programs stored in the server storage unit 31 and performs various arithmetic processes to realize predetermined functions. The server control unit 30 may have various functions such as a clock function. The program executed by the server control unit 30 may be provided from the network 15 or the like, or may be stored in a portable recording medium.

The server control unit 30 may be configured by a dedicated electronic circuit designed to realize a predetermined function, or a hardware circuit such as a reconfigurable electronic circuit. The server control unit 30 may be configured by various semiconductor integrated circuits such as CPU, GPU, TPU, MPU, microcomputer, DSP, FPGA, ASIC.

The server storage unit 31 is a storage medium that stores programs and data required to realize the functions of the server device 3. The server storage unit 31 includes, for example, an HDD (Hard Disk Drive) or an SSD (Solid State Drive). Moreover, the server storage unit 31 may be configured to include, for example, a DRAM or an SRAM. The server storage unit 31 may be configured to function as a work area of the server control unit 30, for example.

The server storage unit 31 stores, for example, a navigation record database 42, a guide route database 43, and a tide graph database 44. Below, "database" may be abbreviated as "DB". The navigation record DB 42 is a database for accumulating information on navigation records such as past trajectory logs of various ships. The guide route DB 43 is a database that manages route information to be guided to the mobile terminal 2 and the like. The guide route DB 43 is, for example, classified for each specific water area. The tide graph DB 44 is a database that manages tide level information that is configured by a tide graph that graphically shows the time change of the tide level in a specific water area.

The server communication unit 32 is a communication interface that performs communication according to a predetermined communication standard, and connects the server device 3 to the network 15 or an external device by communication.

Although an example of the configuration of the server device 3 has been described above, the server device 3 is not limited to this and may have various configurations. For example, the server device 3 may be an ASP (Application Server Provider) server or the like, and may execute various processes in cloud computing.

Various databases in the information processing system 1 according to the present embodiment will be described below with reference to FIGS. 4(a), 4(b), 4(c) and 5.

FIG. 4A shows an example of the navigation record DB 42. FIG. 4B shows an example of the trajectory log stored in the trajectory log storage unit 41. FIG. 4C shows an example of the guide route DB 43. FIG. 5 shows an example of the tide graph information stored in the tide graph DB 44.

In the example of FIG. 4A, the navigation record DB 42 records “trajectory log number”, “date”, and “departure time” in association with each other. The “trajectory log number” indicates the management number of the trajectory log. The date when the trajectory log is obtained is set in "date". The "departure time" represents, for example, the start time of recording the trajectory log. The "date" and the "departure time" are examples of information for identifying the tide level at the time when the trajectory log was obtained.

In the example of FIGS. 4A and 4B, the server device 3 manages the trajectory log accumulated in the server storage unit 31 in association with the navigation record DB 42 by the trajectory log number. As shown in FIG. 4B, the locus log records “time”, “latitude”, and “longitude” in association with each other.

In the example of FIG. 4C, the guide route DB 43 records a plurality of route information by associating “tide level” with “route information”. For the “tide level”, for example, a plurality of tide levels L1, L2, L3 are set at predetermined intervals. The predetermined interval is, for example, 10 cm. Hereinafter, it is assumed that L1>L2>L3. Each piece of route information indicates a route that can be navigated in the associated tide level and above.

In the tide graph information illustrated in FIG. 5, the vertical axis is the tide level and the horizontal axis is time. In the example of FIG. 5, the tide graph information represents the temporal change of the tide level for three days in a specific water area. The time range included in the tide graph information includes, for example, the past and the future based on the current time. In the present system 1, by referring to the tide graph information, it is possible to specify the tide level at the date and time when the trajectory log was obtained, and to specify the time zone in which the route information associated with various tide levels can be used. it can.

The tide graph information as described above may be periodically updated in the server device 3, or may be temporarily stored in the server storage unit 31 shown in FIG. The tide graph information may be acquired from outside the server device 3 via the server communication unit 32, or may be calculated by the server control unit 30. Part of the tide graph information may include the actual tide level actually measured via the network 15. For the current tide level actually measured, for example, tide level observation data measured by the Japan Coast Guard or the Japan Meteorological Agency may be used.

Further, the tide graph information as described above can be set separately for a plurality of geographical areas such as Osaka Bay and Tokyo Bay. In the following, the geographical area may be referred to as “region”. In this system 1, tide graph information regarding a plurality of areas may be used. In the following, an example will be described in which one area including a specific water area is used as the target for presentation of route information and tide graph information regarding the area is used.

The outline of the operation of the information processing system 1 according to this embodiment will be described below with reference to FIG.

In the information processing system 1 according to the present embodiment, the mobile terminal 2 downloads the route information from the server device 3 and displays the route information on the display unit 25 of the mobile terminal 2. FIG. 6A shows a first display example of the route information displayed on the display unit 25.

As shown in FIG. 6A, the current position icon 100 and the route image 61 are displayed on the map image 60. The current position icon 100 is an icon indicating the current position of the ship 10. The map image 60 is an image showing a map in a predetermined range including the current location of the ship 10 in the map information storage unit 40. The route image 61 is an image showing a route defined by the route information. The user can confirm the position and range of the navigation route, the positional relationship between the current position and the route, etc. by the route image 61 and the current position icon 100 displayed on the map image 60. The display unit 25 of the mobile terminal 2 may display the trajectory of the ship 10 on the map image 60 in addition to the current position icon 100 at predetermined intervals. The display unit 25 may display the departure place of the ship 10 on the map image 60 in addition to the current position icon 100.

In the present system 1, the navigation route DB 43 manages the route information by analyzing the data of the navigation result DB 42 so that the route indicated by the route information matches the range in which the vessel can travel. It is assumed that the range in which the ship 10 can navigate varies depending on the ebb and flow of the tide. FIG. 6B shows a second display example of the route information.

The display example of FIG. 6B is a display example of the corresponding route information one hour after the case of FIG. In the route image 62 of FIG. 6B, the range of a part of the region 63 from the route image 61 of FIG. 6A is narrowed. As described above, in order to link the route information displayed on the mobile terminal 2 with the time change of the tide level, in the present embodiment, as shown in FIG. 5, the tide graph information indicating the time change of the tide level is used. Manage. In the present embodiment, among the plurality of tide graph information in the tide graph DB 44, tide graph information of a specific area within a predetermined range from the position acquired by the position information acquisition unit 26 is selected.

As shown in FIG. 5, the tide level becomes high or low during the day. The tide level changes daily. For example, on a high tide day, the tide level will be higher at high tide and lower at low tide than on other days. The tide graph information reveals time zones with the same tide level for various tide conditions on each day. In the present system 1, the tide graph information can be used to manage the route information of routes that can be navigated for each tide level. Hereinafter, details of the operation of the information processing system 1 according to the present embodiment will be described.

(Display processing of route information)
In the information processing system 1 according to the present embodiment, the mobile terminal 2 transmits the information for identifying the tide level to the server device 3 in order to display the route information according to the tide level at the time of navigation, and the corresponding route Download information. The display processing of the route information will be described with reference to FIG.

FIG. 7 is a sequence diagram for explaining the display processing of the route information in the present embodiment. The process shown in FIG. 7 is started, for example, when a predetermined program is started up on the mobile terminal 2 or when a predetermined user operation is input.

First, the mobile terminal 2 acquires, for example, time information indicating the current date and time (step 1). Below, step may be displayed by S. The time information acquired in step 1 is an example of information for identifying the tide level during navigation. The navigation time is, for example, a time point at which the route information is displayed. In addition, the mobile terminal 2 acquires, for example, position information indicating the current position (S2). The position information acquired in step S2 is an example of information for identifying the tide level during navigation. Either step 1 or step S2 may be performed first. Further, the position information and the time information may be acquired simultaneously from the GPS information.

Next, the terminal control unit 20 of the mobile terminal 2 transmits a request for route information together with the acquired time information and position information to the server device 3 via the network communication unit 22 (S3). The request for route information by the mobile terminal 2 includes, for example, identification information of the mobile terminal 2.

The server device 3 receives the route information request, the time information, and the position information from the mobile terminal 2 via the network 15 (S11).

Next, the server device 3 identifies the tide level at the time of navigation based on the received time information, position information, and tide graph information (S12). Specifically, the server device 3 selects the tide graph information of a specific area including the position indicated by the received position information from the plurality of tide graph information in the tide graph DB 44. The server device 3 calculates the tide level corresponding to the date and time indicated by the received time information in the graph of the selected tide graph information.

Next, the server device 3 acquires the route information according to the identified tide level from the plurality of route information in the guide route DB 43 (S13). For example, the server device 3 acquires route information associated with the tide level closest to the calculated tide level in the guide route DB 43. The server device 3 may acquire the route information associated with the closest tide level within the calculated tide level or lower.

Next, the server device 3 transmits the acquired route information to the mobile terminal 2 via the network 15 (S14). At this time, the server device 3 refers to the identification information or the like in the received request and transmits information to the mobile terminal 2 that transmitted the request.

The terminal control unit 20 of the mobile terminal 2 receives the route information from the server device 3 via the network communication unit 22 (S4).

Next, the mobile terminal 2 displays the received route information on the display unit 25 (S6). For example, the terminal control unit 20 of the mobile terminal 2 refers to the map information 40 stored in the terminal storage unit 21 and displays the map image 60 and the route image 61 of the route indicated by the received route information as latitude and longitude. Are displayed so as to be displayed on the display unit 25.

Next, the terminal control unit 20 of the mobile terminal 2 determines whether or not there is a time change at the time of navigation, that is, a change in the date and time for which the route information is displayed (S6). For example, when the user inputs an operation of designating the changed date and time into the input unit 24, or when a predetermined period (for example, 5 minutes) has elapsed while the route information is being displayed (S5), the terminal control unit 20 It is determined that there is a time change during navigation (YES in S6).

When the terminal control unit 20 determines that there is a time change at the time of navigation (YES in S6), it performs the process of step 1 and subsequent steps based on the time information indicating the changed date and time. At this time, the mobile terminal 2 acquires new route information from the server device 3 (S4) and displays it on the display unit 25 (S5).

The terminal control unit 20 determines whether or not an operation for ending the display of the route information has been input to the input unit 24, for example, when there is no particular time change during navigation (NO in S6) (S7). When the display end operation has not been input (NO in S7), the terminal control unit 20 repeats the processing from step S5 and continues to display the route information.

When the terminal control unit 20 determines that the operation of ending the display has been input (YES in S7), the process illustrated in FIG. 7 ends.

According to the above processing, the tide level at the time of navigation is specified from the tide graph information in response to the request from the mobile terminal 2 (S12, S22), and the route information according to the appropriate tide level at various dates and times is sent to the mobile terminal 2. It is downloaded and displayed (S4, S5). Further, by changing the time during navigation (YES in S6), the route information displayed on the display unit 25 can be changed as shown in FIGS. 6(a) and 6(b). In the present embodiment, when using the tide graph information of a plurality of areas, the server device 3 determines the area including the place indicated by the received position information, and identifies the tide level using the determined tide graph information of the area. be able to.

In the above description, the example in which the mobile terminal 2 acquires time information as information for identifying the tide level during navigation has been described (S1). The above-mentioned information for specifying the tide level is not limited to this. For example, when the place where the ship 10 travels is specified, the position information may not be included.

Further, instead of the time information (S1) acquired by the mobile terminal 2, the date and time (S11) when the server device 3 receives the above request may be clocked. That is, the route information request itself from the mobile terminal 2 may be used as information for identifying the tide level during navigation. When the server device 3 measures the date and time when the request is received, the server device 3 may include a time counting unit.

Further, in step S5 described above, the terminal control unit 20 may further display the current location icon 100, as shown in FIGS. 6(a) and 6(b). For example, the terminal control unit 20 acquires the position information from the position information acquisition unit 26, superimposes the current position icon 100 on the position corresponding to the position information acquired in the above image, and displays the current position icon 100 on the display unit 25. For example, the terminal control unit 20 may obtain position information at predetermined time intervals and perform display control so as to move the current position icon 100 in real time.

(Route information update process)
In the information processing system 1 according to the present embodiment, the route information used in the route information display process shown in FIG. 7 is managed by the server device 3. Specifically, the server device 3 collects trajectory logs from various mobile terminals 2 and the like together with information for identifying the tide level during navigation. The server device 3 generates and updates route information according to the tide level based on the collected information. An example of the route information update process will be described with reference to FIGS.

FIG. 8 is a sequence diagram for explaining the route information updating process in the information processing system 1. FIG. 8 illustrates an example of an update process in which the route information is updated when the trajectory log is uploaded from the mobile terminal 2 to the server device 3.

First, the mobile terminal 2 records a trajectory log while the ship 10 is in transit (S21). For example, in the mobile terminal 2, the position information acquisition unit 26 receives GPS information at predetermined time intervals and outputs the position information and time information indicated by the GPS information to the terminal control unit 20. The position information is, for example, latitude and longitude. The position information may include altitude in addition to latitude and longitude. The predetermined time interval for the position information acquisition unit 26 to acquire GPS information is, for example, 1 second. The terminal control unit 20 sequentially associates the time, the latitude, and the longitude with each other and records them in the terminal storage unit 21 as a trajectory log. The recording of the trajectory log is repeated until, for example, the user inputs an end operation.

Next, the mobile terminal 2 transmits the locus log at predetermined time intervals to the server device 3 via the network communication unit 22 (S22).

The server device 3 receives the trajectory log from the mobile terminal 2 via the network 15 (S31).

Next, the server device 3 sets a new trajectory log number and the like in the navigation record DB 42 and records the received trajectory log (S32).

Next, the server device 3 refers to the tide graph DB 44 and identifies the route information to be updated among the plurality of route information of the specific water area in the guide route DB 43 (S33). The route information in the guide route DB 43 is generated and updated using, for example, a trajectory log whose tide level is within a predetermined range below the associated tide level. The predetermined range is, for example, 10 cm.

Specifically, in step S33, the server device 3 first calculates the tide level at the date and time of the trajectory log on the graph of the tide graph information. For example, if the calculated tide level is greater than or equal to L3 and less than or equal to L2, the server device 3 identifies the route information associated with the tide level “L2” in the guidance route DB 43 of the specific water area as the update target.

Next, the server device 3 updates the specified route information (S34). For example, when the route information corresponding to the tide level “L2” is to be updated, the server device 3 refers to the tide graph information and calculates a time section in which the tide level is L3 or more and L2 or less in the past predetermined period. .. The predetermined period is, for example, one year. Further, the server device 3 refers to the date and the departure time in the navigation record DB 42, and searches the trajectory log associated with the date and time within the calculated time section. Based on the searched trajectory log, the server device 3 generates new route information so that the trajectory based on the trajectory log is included in the route.

FIG. 9 is a diagram for explaining a method of generating route information. For example, as shown in FIG. 9A, the server device 3 traces a plurality of loci indicated by each searched locus log in a two-dimensional coordinate system of latitude and longitude. The server device 3 may trace a locus of a predetermined number of times or more among the retrieved locus logs. The server device 3 manages the locus for each predetermined area (section). The server device 3 determines the area 70 presented as the route range in the route information, as shown in FIG. 9B, based on the traced trace.

FIG. 10 is a diagram for explaining a method of determining the route area 70 in the route information. As shown in FIGS. 10A and 10B, the route area 70 is determined using, for example, a mesh that divides the two-dimensional coordinate system into regions of a predetermined size. Each of the plurality of meshes is set, for example, in a rectangular shape having the same size. The size of the mesh is appropriately set, for example, from the viewpoint of the resolution of the route information 61 of the route information shown in FIG. The size of the mesh is set to display, for example, 5 km×5 km. The size of the mesh may be set to display 20 m×20 m, for example. The size of the mesh is not limited to being set in terms of resolution. The size of the mesh may be set to a plurality of sizes for each ship 10 according to the size of the ship 10. Each of the plurality of meshes is configured to be displayed as a layer on the map image 60 as a layer. Each of the plurality of meshes is arranged on the map image 60 so as not to overlap each other. Each of the plurality of meshes has longitude information and latitude information so as not to overlap on the map image 60. Each of the plurality of meshes has, for example, the center of the rectangular mesh or the longitude and latitude information of the four corners of the rectangular mesh. Each mesh can be displayed on the map image 60 so that the longitude information and the latitude information of each mesh and the longitude information and the latitude information in the map image 60 respectively match.

The server control unit 30 sets, in the region 70 of the route, a mesh through which a predetermined number or more of loci of the locus log pass among a plurality of meshes included in the two-dimensional coordinate system. The predetermined number is set to, for example, one. The server control unit 30 calculates the number of trajectories to be passed, that is, the passing frequency, for each mesh set in the route area 70. The passing frequency of each mesh corresponds to the past navigation results of the ship. The server control unit 30 associates the calculated passage frequency with the mesh set in the route area 70 to generate route information. As a result, when the route information is displayed (S5 in FIG. 7), it is possible to highlight the mesh having a high passing frequency as shown in FIG. 10(b). The highlighting can be performed by changing the lightness, the saturation, the hue, or the like.

Returning to FIG. 8, the server device 3 updates the guide route DB 43 by rewriting with the newly generated route information (S34), and ends the route information updating process shown in FIG.

According to the above processing, the information processing system 1 can appropriately manage the route information according to the tide level based on the tide graph information.

In the above description, an example of using the time information of the departure date and time as the information for identifying the tide level at the time of the navigation recorded in the trajectory log has been described, but the present invention is not limited to this, and one information included in the trajectory log Alternatively, the times at a plurality of points may be used as the target for identifying the tide level.

Further, the position information acquired by the mobile terminal 2 in the trajectory log may be used for identifying the tide level in the server device 3. For example, when managing the route information using a plurality of tide graph information relating to different regions, the server device 3 determines the region including the place where the trajectory log is sailed based on the above position information, and makes a determination. The tide level is identified by referring to the tide graph information of the area. The server device 3 may manage the route information for each area using different guide route DBs for each area having different tide graph information.

In the above description, an example in which the corresponding route information is updated when the trajectory log is uploaded has been described. The route information update process is not limited to this, and various route information may be updated at predetermined intervals, for example. The predetermined cycle may be, for example, every day.

For example, the server device 3 records the received trajectory log at any time during the period between the update timings and accumulates it in the navigation record DB 42. The server device 3 updates each route information by using the trajectory log in the past predetermined period based on the update timing. The server device 3 may record a set of used trajectory logs each time the route information is updated, for example. At the time of the next update, the server device 3 may use the newly obtained trajectory log instead of the older trajectory log of the trajectory logs used last time to update the route information.

In the above description, the route information generated in step S34 includes the passage frequency of the route. The route information may further include other information. For example, information indicating the travel time taken when the ship 10 travels along the route may be included.

For example, in step S34, the server control unit 30 waits for each mesh in the route to reach each mesh from a predetermined reference position (specific mesh, etc.) based on the time information recorded in the trajectory log. Calculate the time difference. The server control unit 30 can include the time difference calculated for each mesh in the route information as information indicating the travel time. When a plurality of trajectories pass through the same mesh, the server control unit 30 may calculate the average value of the travel time of each trajectory. When a plurality of trajectories pass through the same mesh, the server control unit 30 may calculate a moving time of a typical trajectory.

According to the above-mentioned route information, the mobile terminal 2 can display the travel time together with the route of the route information as shown in FIG. 11 in the process of displaying the route information.

When the mobile terminal 2 acquires the route information including the travel time in step S4 of FIG. 7, the terminal control unit 20 determines, for example, based on the current time, the current position, and the travel time for each mesh included in the route information. A mesh that arrives at a predetermined time interval from the current position is calculated. The predetermined time interval may be 10 minutes, for example. As a result, the display unit 25 can display the travel time on the route image 61 of the route information as shown in FIG. 11 (S5).

In the above description, as shown in FIG. 10, an example in which the route information is generated using the mesh has been described, but the route information may be generated without using the mesh. This modification will be described with reference to FIG.

In the modification of FIG. 12, the server control unit 30 determines, for example, as shown in FIG. 12A, whether or not a plurality of traced traces (FIG. 9A) are within a predetermined width W1. To determine. When the server control unit 30 determines that it is within the range of the predetermined width W1, as shown in FIG. 12B, the route is set so that the loci are summarized in the route information. The server control unit 30 counts the number of trajectories within the range of the predetermined width W1. The server control unit 30 sets the width of the route in the route information to be thicker as the number of counted trajectories increases, as shown in FIGS. 12(c) and 12(d). Thereby, when the route information is displayed (S5 in FIG. 7), the route information can be displayed on the display unit 25 or the like so that the width of the route becomes thicker according to the passing frequency of the ship. The information processing system 1 may be configured to collect a plurality of traced trajectories for each predetermined threshold value.

As described above, the information processing system 1 according to the present embodiment includes the server device 3 and the mobile terminal 2. The server device 3 manages route information indicating routes that the ship can navigate. The mobile terminal 2 displays the route information acquired from the server device 3. The server device 3 manages a plurality of pieces of route information in association with a plurality of tide levels based on tide graph information, which is an example of tide level information indicating tide level changes over time. The mobile terminal 2 transmits the information for identifying the tide level to the server device 3, and acquires from the server device 3 the specific route information on which the ship according to the specific tide level can navigate, and the network communication unit 22. And a display unit 25 that displays the route information of the. According to the present system 1, by using the route information associated with various tide levels based on the tide level information, it is possible to accurately present the routes that can be navigated according to the tide state.

In the present embodiment, the server device 3 may manage the route information according to the tide level for each region based on the tide level information regarding a plurality of regions (geographical regions). The mobile terminal 2 may further include a position information acquisition unit 26 that acquires position information indicating the current position. The network communication unit 22 may acquire route information according to the tide level of a specific area. As a result, it is possible to accurately present a navigation route that can be navigated according to the state of the tide that changes depending on the region.

In the present embodiment, the tide graph information, which is an example of tide level information, is composed of a tide graph. In the present system 1, the route information can be displayed so as to be linked to the time change of the tide level in the tide graph information.

In this embodiment, the information for identifying the tide level at the time of navigation includes information indicating at least one of the date and time and the place of the navigation. The tide level at the time of navigation can be specified based on such information, and the route information according to the specified tide level can be presented.

In the present embodiment, the mobile terminal 2 further includes an input unit 24 that inputs time information by a user operation. The display unit 25, in response to the input time information, Ru change the route information to be displayed. As a result, the user can confirm the change of the route according to the ebb and flow of the tide in the present system 1.

In the present embodiment, the display unit 25 may display the travel time during which the ship 10 corresponding to the ship information travels on the route in the route information (FIG. 11).

In the present embodiment, the route information may include a plurality of meshes in the route information. The display unit 25 may display the route information such that the mesh having a higher passing frequency of the ship 10 is emphasized. The display unit 25 displays the route information such that, for example, the mesh having a higher passing frequency has a higher brightness as the highlighting. The highlighting of the mesh is not limited to this. For example, the mesh having a higher passing frequency may have a lower lightness or the tint may be changed.

In the present embodiment, the display unit 25 may display the route information such that the width of the route increases according to the frequency of passage of the ship 10.

In the present embodiment, the mobile terminal 2 may further include a map information storage unit 40 that stores map information indicating a map. The display unit 25 may display the route image 61 of the route indicated by the route information on the map image 60 by the map information storage unit 40.

In the present embodiment, the mobile terminal 2 may further include a position information acquisition unit 26 as a current position detection unit that detects the current position of the ship 10. The display unit 25 may display the current position of the ship 10 along with the route indicated by the route information by the current position icon 100 or the like.

In the present embodiment, a program executed by the terminal control unit 20 to realize the functions of the mobile terminal 2 as described above may be provided. Further, a program executed by the server control unit 30 to realize the function of the server device 3 may be provided. For example, a program for the mobile terminal 2 that displays specific route information on the display unit 25 among the plurality of route information indicating the route of the ship 10 may be provided. The plurality of route information is associated with the tide level based on the tide level information indicating the temporal change of the tide level. The display unit 25 displays specific route information on which the ship 10 can navigate according to the tide level.

(Other embodiments)
In each of the above embodiments, the route information is managed in association with the tide level based on the tide graph information. Since it is considered that the routes that a ship can navigate vary among ships, the route information may be managed based on the ship information indicating the classification of the ship such as the size and model of the ship. For example, in the information processing system 1, various types of ship information can be acquired from the operation support device 11 of the ship 10 via the mobile terminal 2 and appropriately uploaded to the server device 3. The server device 3 manages the route information for each classification of the vessels based on the vessel information indicating the classification of the vessels, so that various vessels can accurately present the routes that can be navigated according to various tide levels. ..

In each of the above-described embodiments, in the route information update process (FIG. 8), the mobile terminal 2 generates a trajectory log and uploads it to the server device 3 (S23). Not limited to this, for example, the mobile terminal 2 may sequentially transmit the position information to the server device 3, and the server device 3 may generate the trajectory log.

In each of the above embodiments, in the process of displaying the route information (FIG. 7), the mobile terminal 2 receives the route information corresponding to the specific route from the server device 3 based on the request for the route information (S3) ( S4). Not limited to this, the mobile terminal 2 collectively downloads a plurality of route information from the server device 3 based on a route information request, and specifies the route information to be displayed from the downloaded route information. Good. For example, the tide graph information may be stored in the terminal storage unit 21, and the terminal control unit 20 may refer to the tide graph information to specify the tide level at the time of display.

For example, when the tide graph information is stored in the mobile terminal 2, the mobile terminal 2 may transmit a request for a trajectory log and route information to the server device 3 together with information indicating a specific tide level. The information indicating such a specific tide level is an example of information for the server device 3 to specify the tide level during navigation.

In each of the above embodiments, the route information is displayed on the display unit 25 of the mobile terminal 2. However, the present invention is not limited to this, and the route information may be displayed on the display unit of the operation support device 11 of the ship 10, for example. .. Further, the various functions of the mobile terminal 2 described above may be realized in an information processing device such as the driving support device 11. For example, the operation support device 11 may include a position information acquisition unit to detect the current location of the ship 10, or may include a network communication unit to perform information communication with the server device 3 via the network 15. .. The information processing device according to the present embodiment is not limited to the mobile terminal 2 and the operation support device 11, and various information processing devices may be used.

In each of the above-described embodiments, the information processing device transmits the information for identifying the tide level during navigation to the information management device, and acquires the route information according to the tide level from the information management device. Such an information management device does not necessarily have to be used, and for example, a plurality of tide level information may be set in advance in an information processing device such as the operation support device 11.

That is, an information processing device that displays route information indicating a route that a ship can navigate is a display unit that displays route information, a control unit such as a processor that controls the display unit, and tide level information that indicates a temporal change in tide level. A storage unit that stores the tide level based on the route and the route information in association with each other may be provided. The control unit acquires information for identifying the tide level, for example, by measuring the current time, positioning GPS information, or inputting by the user. The control unit refers to the information stored in the storage unit and displays the route information according to a specific tide level on the display unit. Also by this, it is possible to accurately present the navigable route according to the tide condition.

Further, a program executed by the control unit to realize the function of the information processing apparatus as described above may be provided.

In each of the above-described embodiments, an example has been described in which the display unit 25 displays one route image associated with a specific tide level based on the identified route information. The display unit 25 may display a route image associated with a specific tide level and a route image associated with a temporally advanced future tide level. For example, the information processing device may display the route image at the current time, and simultaneously display the route image after 10 minutes based on the tide graph information as another route information. The information processing apparatus pre-reads the guidance display of the route that the ship 10 can navigate by displaying the route image associated with the current tide level and the route image associated with the future tide level on the display unit 25 at the same time. It can be carried out. When the information processing apparatus simultaneously displays the route image based on the current tide level and the route image based on the future tide level on the display unit 25, for example, in order to clarify the difference between the different route images, for example, Future route images can be shown with colored dashed lines.

Although the specific embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and the like, and various modifications may be made within the scope of the present invention. Good. For example, an appropriate combination of the contents of the above individual embodiments can be an embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1 Information processing system 2 Mobile terminal 20 Terminal control unit 21 Terminal storage unit 22 Network communication unit 23 Equipment communication unit 24 Input unit 25 Display unit 26 Position information acquisition unit 3 Server device

Claims (9)

An information processing system comprising: an information management device that manages route information indicating a route of a ship; and an information processing device that displays the route information acquired from the information management device,
The information management device,
In association with the tide level information indicating the time change of the tide level, manage a plurality of the route information for each predetermined tide level,
The information processing device,
A time information acquisition unit that acquires time information indicating the date and time,
The time information for specifying the tide level is transmitted to the information management device, and the specific route information that allows the vessel to navigate in accordance with the predetermined tide level from the tide information based on the time information is specified. A communication unit acquired from the information management device,
A display unit for displaying the specific route information ,
The display unit includes a specific the route information in the first time, that displays simultaneously on the specific and the route information in the second time after a predetermined time from the first time, the manner in which each of the difference becomes clear An information processing system characterized by the above. The information management device manages the route information according to the tide level for each region, based on the tide level information regarding a plurality of geographical regions,
The information processing device further includes a position information acquisition unit that acquires position information indicating a current position,
The information processing system according to claim 1, wherein the communication unit acquires the route information according to the tide level of the specific area. The information processing system according to claim 1, wherein the information management device manages the route information for each classification of the ship based on the ship information indicating the classification of the ship. The information processing apparatus further includes an input unit for inputting the time information by a user operation,
The information processing system according to any one of claims 1 to 3, wherein the display unit changes the route information to be displayed according to the time information. In the route information, the route is composed of a plurality of meshes,
The information processing system according to any one of claims 1 to 4, wherein the display unit displays the route information such that a mesh having a higher passing frequency of the ship is emphasized. The information processing system according to claim 5, wherein the display unit displays the route information such that a mesh having a higher passing frequency has a higher brightness. The information processing system according to any one of claims 1 to 4, wherein the display unit displays the route information so that the width of the route increases according to the frequency of passage of the ship. .. An information processing device that communicates information with an information management device that manages route information indicating a route that a ship can navigate,
A plurality of the route information managed by the information management device, for each predetermined tide level, is associated with tide level information indicating a temporal change of the tide level,
A time information acquisition unit that acquires time information indicating the date and time,
The time information specifying the tide level is transmitted to the information management device, and the specific route information corresponding to the predetermined tide level is acquired from the information management device from the tide level information based on the time information. Communication department,
A display unit that displays the specific route information acquired by the communication unit ,
The display unit includes a specific the route information in the first time, that displays simultaneously on the specific and the route information in the second time after a predetermined time from the first time, the manner in which each of the difference becomes clear An information processing device characterized by the above. Of a plurality of route information indicating the route of the ship, a program for an information processing device for displaying the specific route information on a display unit,
The plurality of route information is managed for each predetermined tide level, in association with tide level information indicating a temporal change in tide level,
A time information acquisition unit that acquires time information indicating the date and time,
Communication for transmitting the time information for specifying the tide level to the information management device, and for acquiring from the information management device the specific route information according to the predetermined tide level from the tide information based on the time information Function as a department,
The display unit displays the specific route information that the vessel can navigate in accordance with the tide level , and the display unit determines the specific route information at a first time and a predetermined time after the first time. And a program for realizing the function of the information processing apparatus, which simultaneously displays the specific route information at the second time and in a manner in which the difference between them becomes clear .

Images