JP6548233B2 - User terminal - Google Patents

Description

  The present invention relates to a user terminal, and more particularly to a technology for providing useful information to a user of a motorized mobile.

  Determining whether or not to execute a desired action (for example, determining whether a destination can be reached) with the current battery remaining amount (SOC: also referred to as state of charge) can It is one of the points of interest to the users of EVs (Electric Vehicles). In particular, the current technology limits the amount of power that can be stored in the battery and the efficient charging of the battery. Therefore, whether or not the user's desired action is actually performed when driving the electric vehicle It is one of the important information.

  Patent Document 1 (Japanese Patent Laid-Open No. 2010-210271) discloses a technique for accurately determining whether an electric vehicle can arrive at a destination with the current battery remaining amount. In the technology described in this publication, the amount of power consumed by the vehicle accessory is estimated based on the environmental information of the route from the current location to the destination, and the electric vehicle is considered in consideration of the amount of power consumed by the vehicle accessory. Determines whether it is possible to arrive at the destination.

  The Patent Document 1 discloses that when it is determined that the destination can be reached, the battery remaining amount after reaching the destination is obtained, and the distance the electric vehicle can travel is calculated using the battery remaining amount after reaching the destination. ing. By displaying a value obtained by adding the distance that the electric vehicle can travel with the remaining battery capacity after reaching the destination to the route distance from the current location to the destination, it is displayed on the display as the travelable distance. The driver can easily recognize whether charging should be performed at proper timing, and convenience can be improved.

  However, according to the study of the inventors, it is possible to display the travelable distance obtained by adding the distance that the electric vehicle can travel and the route distance from the current position to the destination based on the remaining battery amount after reaching the destination. There is room for improvement in the approach in terms of providing more useful information for the determination of action that can be taken after the arrival of the destination.

Unexamined-Japanese-Patent No. 2010-210271

  Therefore, an object of the present invention is to provide a user terminal capable of providing the user with more useful information for determining action that can be performed after reaching the destination.

In one aspect of the present invention, a user terminal is a user terminal that communicates with an information providing device for a motorized mobile body. The user terminal transmits, to the information providing apparatus, a request for determining whether the electric mobile unit can reach the destination from the certain point from an SOC (state of charge) of the electric mobile unit at a certain point. When it is determined that the destination can be reached by the information providing device, the electric mobile body is set so as to surround the destination when it leaves the destination after reaching the destination. Display data indicating a plurality of reachable points reachable by the SOC of the motor-driven movable body at the certain point from the node included in the range of the next destination to the next destination, Display data in which a destination and the plurality of reachable points are both composed of node information is received from the information providing apparatus, and the plurality of reachable points are received based on the received display data. By connecting the reachable point between the adjacent Chi, a possible range reach up to the next destination is displayed on the screen when starting the destination.

The user terminal of another aspect of the present invention, when the distance between two of the destination of the plurality of reachable points are different, by connecting the reachable point adjacent to a non-circular shape, the arrival The possible range may be displayed on the screen.

  In the user terminal according to another aspect of the present invention, the reachable range may be displayed on the screen by further adding a route from the destination to the plurality of reachable points.

  In the user terminal according to another aspect of the present invention, the reachable range may be displayed on the screen by further adding a route from the certain point to the destination.

  In the user terminal of another aspect of the present invention, a portion inside the reachable range may be displayed in a different color tone from a portion outside the reachable range.

  In one aspect of the present invention, the motor-driven movable body information providing apparatus for providing information on the motor-driven movable body starts from the point at which the motor-driven movable body is located with respect to the SOC (state of charge) of the motorized mobile body at a certain point. Calculation means for calculating a plurality of reachable points that can be reached when leaving a destination after reaching a destination and a reachable range display screen in which a plurality of reachable points can be visually recognized And display data generation means for generating display data of

  The reachable range display screen preferably displays a closed curve passing through a plurality of reachable points. It is to be noted that the closed curve referred to here includes one configured by combining line segments. Here, when two of the plurality of reachable points have different distances from the destination, the closed curve is drawn as not being a circle.

  The reachable range display screen preferably displays a route from the destination to a plurality of reachable points, and the reachable range display screen displays a route from the departure point to the destination Is preferred. Furthermore, in the reachable range display screen, it is preferable that the inner part of the closed curve is displayed in a different color tone from the outer part of the closed curve.

  In one embodiment, the calculation means determines a plurality of next destinations so as to surround the destination, sets the destinations as the next departure place, and simulates the traveling of the motorized mobile body from the next departure place to the next destination. A traveling simulation is performed to calculate a plurality of reachable points as points which can be reached when departing from the next departure place on a route from the next departure place to each of the plurality of next destinations. In this case, the calculating means calculates the SOC of the motor-driven movable body at the destination, and the distance between the destination and the plurality of next destinations depends on the SOC of the motor-driven movable body at the destination. It is preferable to determine a plurality of next destinations.

  In addition, the calculation means performs traveling simulation using a road network model representing a road network with nodes representing intersections and links representing roads connecting the nodes, and the calculation means surround a destination. As described above, a plurality of next destination areas may be determined, and nodes included in each of the next destination areas may be determined as the next destination. At this time, the calculation means calculates the SOC of the motor-driven movable body at the destination so that the distance between the destination and each of the plurality of next destination ranges depends on the SOC of the motor-driven movable body at the destination. It is preferable to determine a plurality of next destination ranges. In addition, when the node of the road network model is not included in the specific next destination range among the plurality of next destination areas, the calculation means adjusts the size and / or position of the specific next destination range. May be

  In one embodiment, the calculation means sets the destination as the next departure place, determines a plurality of next destinations so as to surround the destination, and simulates the traveling of the motorized mobile body from the next departure place to the next destination. Running simulation using a road network model representing a road network with nodes representing intersections and links representing roads connecting the nodes, from the next departure point to each of a plurality of next destinations A plurality of reachable points may be calculated as reachable points when departing from the next departure place in the route to be reached. Here, the calculation means sets a plurality of next destination areas so as to surround the destinations, and at least one node of the road network model among the plurality of next destination areas determines the plurality of next destinations. For the next destination range to be included, any of at least one node is determined as the next destination, and among the plurality of next destination ranges, the road absence next destination range set in the area where there is no road For the above, it may be changed to include at least one node of the road network model to determine the next destination range after the change, and the node included in the next destination range after the change may be determined as the next destination . In this case, when the calculation means determines that it is possible to reach the next destination determined from the next destination range after the change from the next departure location by the driving simulation, the next destination and the road absence next destination range Preferably, the virtual reachable position located between the positions is determined, and the calculation means preferably determines the closed curve to pass through the plurality of reachable points and the virtual reachable position.

  Note that each of the plurality of reachable points may be calculated as a point at which the SOC of the motor-driven movable body is a specific value.

  Also, as an example, the “certain point” is the current position where the motor-driven movable body is currently located, and the SOC of the motor-driven movable body given to the calculation means is the SOC of the current motor-driven movable body.

  In another aspect of the present invention, a motorized mobile information providing method for providing information related to a motorized mobile object is a destination from a point at which the motorized mobile is at an SOC (state of charge) of the motorized mobile at a specific point. Calculating a plurality of reachable points that can be reached when leaving the destination after reaching a destination, and for displaying a reachable range display screen in which the plurality of reachable points can be visually recognized. Generating display data.

  In one embodiment, calculating the plurality of reachable points comprises: determining a plurality of next destinations so as to surround the destination; setting the destination as the next departure; and starting from the next departure. The method may further comprise the step of performing a driving simulation that simulates the driving of the motorized mobile unit to a destination. In this case, it is preferable that a plurality of reachable points be calculated as a reachable point when departing from the next departure place in a route reaching each of the plurality of next destinations from the next departure place by traveling simulation. .

  Another aspect of the present invention provides a program used to provide information on a motorized mobile body. The program is capable of reaching the SOC (state of charge) of the motorized mobile at a certain point, which can be reached when the motored mobile leaves the destination after reaching the destination from the certain point. The computing device is caused to execute a step of calculating points and a step of generating display data for displaying a reachable range display screen in which a plurality of reachable points can be visually recognized.

  In one aspect of the present invention, display data for displaying a reachable range display screen in which the user terminal can visually recognize a plurality of reachable points of the motor-driven movable body through the network from the EV management system Is received, and the EV management system is configured to determine a state of charge (SOC) of the motorized mobile at a certain point after the motorized mobile reaches a destination from the certain point Calculation means for calculating the plurality of reachable points reachable when leaving the destination, and for displaying the reachable range display screen in which the plurality of reachable points are visually recognizable And display data generation means for generating display data, wherein the calculation means determines a plurality of next destinations so as to surround the destination, and sets the destination as the next departure place. Running simulation simulating the traveling of the motor-driven movable body from the next departure place to the next destination, and the next departure place in a route to reach each of the plurality of next destinations from the next departure place To calculate the plurality of reachable points as reachable points when departing from the road, and the calculation means represents a road network by nodes representing intersections and links representing roads connecting the nodes. The traveling simulation is performed using a road network model, and the calculation means determines a plurality of next destination areas so as to surround the destination, and the nodes included in each of the next destination areas are used as the next objects. It is a user terminal determined as the ground.

  In one embodiment, in the above-mentioned user terminal, the reachable range display screen displays a closed curve passing through the plurality of reachable points.

  In one embodiment, in the above user terminal, the closed curve is not a circle when two of the plurality of reachable points have different distances from the destination.

  In one embodiment, in the above-mentioned user terminal, a route from the destination to the plurality of reachable points is displayed on the reachable range display screen.

  In one embodiment, in the above-mentioned user terminal, a route from the certain point to the destination is displayed on the reachable range display screen.

  In one embodiment, in the above-mentioned user terminal, in the reachable range display screen, a portion inside the closed curve is displayed in a different color tone from a portion outside the closed curve.

  In one embodiment, in the above-mentioned user terminal, the calculation means calculates the SOC of the motor-driven movable body at the destination, and the distance between the destination and the plurality of next destinations is the destination. The plurality of next destinations are determined so as to depend on the SOC of the motor-driven movable body at.

  In one embodiment, in the above-mentioned user terminal, the calculation means calculates the SOC of the motor-driven movable body at the destination, and the distance between the destination and each of the plurality of next destination ranges is the destination. The plurality of next destination ranges are determined such that the distance depends on the SOC of the motor-driven movable body.

  In one embodiment, in the above-described user terminal, when a node of the road network model is not included in a specific next destination range among the plurality of next destination areas, the calculation unit is configured to: Adjust the size and / or position of the destination range.

  In one embodiment, in the above user terminal, the calculation means sets the destination as the next departure place, determines a plurality of next destinations so as to surround the destination, and the next departure place from the next departure place A driving simulation that simulates the driving of the motorized mobile object to a destination is executed using a road network model that represents a road network with nodes representing intersections and links representing roads connecting the nodes. Calculating a plurality of reachable points as reachable points when departing from the next departure place in a route to reach each of the plurality of next destinations from the next departure place; A plurality of next destination areas are set so as to surround a plurality of next destinations, and at least one of the plurality of next destination areas of the road network model is set. For the next destination area including the second node, any one of the at least one node is determined as the next destination, and a road is set in an area where there is no road among the plurality of next destination areas. With regard to the existing next destination range, it is changed to include at least one node of the road network model to determine a changed next destination range, and a node included in the changed next destination range is determined to be the next The destination is determined as the destination, and the calculation means determines that the next destination, which is determined from the next destination after the change from the next destination, can be reached from the next destination by the traveling simulation. And a virtual reachable position located between the position of the road absence next destination area and the position of the road absence next place, and the calculation means determines the closed curve by the plurality of reachable points and the virtual reachable position. Determined as over to.

  In one embodiment, in the above-described user terminal, each of the plurality of reachable points is calculated as a point at which the SOC of the motor-driven movable body is a specific value.

  In one embodiment, in the above-mentioned user terminal, the certain point is a current position where the motorized mobile body is currently located, and the SOC of the motorized mobile body given to the calculation means is the current position. It is SOC of the said electrically-driven mobile body.

  In one embodiment, in the above-mentioned user terminal, the calculation means determines a plurality of next destinations so as to surround the destination, sets the destinations as the next departure place, and the next departure place from the next departure place A driving simulation is performed to simulate the traveling of the motor-driven movable body to the destination, and the route from the next departure point to each of the plurality of next destinations is reached when departing from the next departure point A plurality of specific condition reachable points among the plurality of reachable points are calculated as possible and points satisfying different conditions, and the plurality of specific conditions reachable to the reachable range display screen A first closed curve passing through a plurality of first specific condition reachable points satisfying a first condition of the different conditions among the different points among the points; and the plurality of specific condition reachable points Of the second closed curve passing through the second specific condition reachable point of the second condition is satisfied more of different conditions are displayed.

  In another aspect of the present invention, the motor-driven movable body is a motor-driven movable body that provides probe information to an EV management system via a wireless communication network, and the EV management system is configured to operate the electric motor at a certain point. Calculation of a plurality of reachable points that can be reached when the motorized mobile body leaves the destination after reaching the destination from the certain point, with respect to SOC (state of charge) of the mobile body Means, and display data generation means for generating display data for displaying a reachable range display screen in which the plurality of reachable points can be visually recognized, the calculation means surrounding the destination Thus, a driving simulation is performed in which a plurality of next destinations are determined, the destination is set as the next departure place, and the traveling of the motor-driven movable body from the next departure place to the next destination is simulated. And calculating the plurality of reachable points as reachable points when departing from the next departure place in a route from the next departure place to each of the plurality of next destinations; The traveling simulation is performed using a road network model representing a road network by a node representing an intersection and a link representing a road connecting the nodes, and the calculation means is configured to surround the destination. A plurality of next destination areas are determined, and a node included in each of the next destination areas is determined as the next destination.

  In one embodiment, in the above-described motor-driven movable body, a closed curve passing through the plurality of reachable points is displayed on the reachable range display screen.

  In one embodiment, in the above-mentioned motor-driven movable body, the closed curve is not a circle when two of the plurality of reachable points have different distances from the destination.

  In one embodiment, in the above-described motor-driven movable body, a route from the destination to the plurality of reachable points is displayed on the reachable range display screen.

  In one embodiment, in the above-described motor-driven movable body, a route from the certain point to the destination is displayed on the reachable range display screen.

  In one embodiment, in the motor-driven movable body described above, in the reachable range display screen, the inner portion of the closed curve is displayed in a color tone different from that of the outer portion of the closed curve.

  In one embodiment, in the motor-driven movable body, the calculation means calculates an SOC of the motor-driven mobile body at the destination, and a distance between the destination and the plurality of next destinations is the purpose. The plurality of next destinations are determined so as to be dependent on the SOC of the motorized mobile unit on the ground.

  In one embodiment, in the motor-driven movable body, the calculation means calculates an SOC of the motor-driven movable body at the destination, and a distance between the destination and each of the plurality of next destination ranges is the purpose. The plurality of next destination ranges are determined such that the distance depends on the SOC of the motor-driven movable body on the ground.

  In one embodiment, in the motor-driven movable body described above, when a node of the road network model is not included in a specific next destination range among the plurality of next destination areas, the calculation unit is configured to Adjust the size and / or position of the next destination range.

  In one embodiment, in the motor-driven movable body, the calculation means sets the destination as a next departure place, determines a plurality of next destinations so as to surround the destination, and starts the next departure place from the next departure place. A driving simulation that simulates the driving of the motorized moving object to the next destination is executed using a road network model that represents a road network with nodes that represent intersections and links that represent roads that connect the nodes. Calculating a plurality of reachable points as reachable points when departing from the next departure place in a route from the next departure place to each of the plurality of next destinations; In the determination of the plurality of next destinations, a plurality of next destination ranges are set so as to surround the destinations, and at least one of the road network models in the plurality of next destination ranges is selected. Is determined as the next destination, and there is no road set in an area where there is no road among the plurality of next destination areas. The next destination range is changed to include at least one node of the road network model to determine a changed next destination range, and a node included in the changed next destination range is determined to be the next purpose. If it is determined as the ground, and the calculation means determines that the next destination, which is determined from the next destination area after the change, can be reached from the next departure place by the traveling simulation, The virtual reachable position located between the positions of the road absence next destination area is determined, and the calculation means passes the closed curve through the plurality of reachable points and the virtual reachable position. Decide to.

  In one embodiment, in the motor-driven movable body described above, each of the plurality of reachable points is calculated as a point at which the SOC of the motor-driven mobile body is a specific value.

  In one embodiment, in the motor-driven movable body described above, the certain point is a current position where the motor-driven movable body is currently located, and the SOC of the motor-driven movable body given to the calculation means is currently And the SOC of the motorized mobile unit.

  In one embodiment, in the motor-driven movable body, the calculation means determines a plurality of next destinations so as to surround the destination, sets the destinations as the next departure place, and starts the next departure place from the next departure place. A driving simulation is performed to simulate the traveling of the motorized mobile unit to the next destination, and the route from the next departure point to each of the plurality of next destinations is departed from the next departure point. A plurality of specific condition reachable points among the plurality of reachable points are calculated as reachable and point satisfying different conditions, and the plurality of specific conditions are reached on the reachable range display screen. A first closed curve passing through a plurality of first specific condition reachable points which satisfy a first condition of the different conditions among the possible points, and the plurality of specific condition reachable points A second closed curve appears to pass through the Chino second specific condition reachable point of the second condition is satisfied more of the different conditions.

  According to the user terminal of the present invention, it is possible to provide the user with more useful information for determining the action that can be performed after reaching the destination.

FIG. 1 is a conceptual diagram showing the configuration of an EV management system that functions as a motor-driven movable body information provision device according to an embodiment of the present invention. FIG. 7 is a diagram showing an example of a configuration of a host computer provided in an EV management center in the present embodiment. It is a figure which shows the example of a structure of the traffic flow simulator in this embodiment. It is a conceptual diagram which shows the example of a road network model. FIG. 6 is a functional block diagram showing data processing by a host computer in the present embodiment. It is a flow chart which shows data processing by a traffic flow simulator in this embodiment. It is a figure which shows the example of the setting of the next destination range in this embodiment. It is a figure which shows the example of the setting of the next destination in this embodiment. It is a figure which shows the example of calculation of the reachable point in this embodiment. It is a figure which shows the example of the reachable range display screen in this embodiment. It is a figure which shows the other example of the reachable range display screen in this embodiment. It is a figure which shows the further another example of the reachable range display screen in this embodiment. In this embodiment, it is a conceptual diagram explaining the underestimation problem of a reachable range which may arise when the next destination range is set as the area (for example, the sea) where a road does not exist. It is a conceptual diagram which shows the solution method of the problem of underestimation of a reachable range in this embodiment.

  FIG. 1 is a conceptual diagram showing the configuration of an EV management system 10 that functions as an electrically-driven mobile information providing apparatus according to an embodiment of the present invention. The EV management system 10 includes a host computer 1 provided in an EV management center (EVC: Electric Vehicle Management Center) and a traffic flow simulator 2.

  The host computer 1 has a function of grasping and managing the state of the electric vehicle, more specifically, the state of the electric vehicle 3, and a function of providing various information related to the electric vehicle 3 to the user (EV user) of the electric vehicle 3. And. Specifically, the host computer 1 communicates with the electric vehicle 3 via the wireless communication network 5 and collects probe information from the electric vehicle 3. Here, the probe information is information indicating the state of each electric vehicle 3 and includes, for example, information indicating a battery capacity (SOC: State of Charge) and position information indicating the current position of each electric vehicle 3. There is.

  In addition, the host computer 1 is communicably connected to the user terminal 4 operated by the EV user via the network 6. As the user terminal 4, for example, a personal computer 4 a may be used, or a mobile phone, a smartphone or another mobile terminal 4 b may be used. The host computer 1 receives the request from the user terminal 4 and provides the user terminal 4 with information on the electric vehicle 3 corresponding to the request. As will be described in detail later, in the present embodiment, the host computer 1 provides the user terminal 4 with information on whether the electric car 3 can arrive at the destination, and after the electric car 3 arrives at the destination, It is configured to transmit display data for displaying the reachable range display screen indicating the reachable range to the user terminal 4.

  The traffic flow simulator 2 is a computer used to simulate the traveling of the electric vehicle 3. Based on the driving simulation of the electric car 3, it is judged whether the electric car 3 can arrive at the destination, and after the electric car 3 arrives at the destination, it will be reached when leaving the destination as the next departure place The possible range is calculated.

  FIG. 2 is a diagram showing an example of the configuration of the host computer 1. The host computer 1 includes an arithmetic unit 11, an input unit 12, a display unit 13, an external interface 14, and a storage unit 15. The computing device 11 performs various data processing for managing the electric vehicle 3 and various data processing for providing information on the electric vehicle 3 to the user terminal 4. As the arithmetic device 11, for example, one or more CPUs (central processing units) may be used. The input device 12 is operated by the manager of the host computer 1 and receives data input by various operations. The display device 13 displays various images when the host computer 1 operates. The input device 12 and the display device 13 function as a man-machine interface of the host computer 1.

  The external interface 14 is an interface for connecting to an external communication unit (for example, the wireless communication network 5, the network 6). The host computer 1 communicates with the traffic flow simulator 2, the electric vehicle 3, and the user terminal 4 via the external interface 14.

  The storage unit 15 stores a program for operating the arithmetic unit 11 and also stores various data necessary for data processing by the arithmetic unit 11. In the present embodiment, the EV management server software 16 and the EV information providing server software 17 are installed in the storage device 15, and the EV management database 18 is stored in the storage device 15.

  The EV management server software 16 is a program for causing the host computer 1 to function as an EV management server that manages the electric vehicle 3. The EV management server has a function of collecting probe information from the electric vehicles 3, associating the collected probe information of each electric vehicle 3 with the vehicle ID of each electric vehicle 3, and storing the probe information in the EV management database 18.

  The EV information provision server software 17 is a program for causing the host computer 1 to function as an EV information provision server that provides the user terminal 4 with information related to the electric vehicle 3. In the present embodiment, the EV information provision server provides the user terminal 4 with information on whether the electric vehicle 3 can arrive at the destination, and after reaching the destination, reaches the location where the electric vehicle 3 can reach. It has a function of transmitting display data for displaying the possible range display screen to the user terminal 4. The EV information provision server may be implemented as a web server.

  The host computer 1 may not be implemented as a single computer, but may be implemented as a series of computing resources (network, server, storage, application) for realizing cloud computing.

  FIG. 3 is a diagram showing an example of the configuration of the traffic flow simulator 2. The traffic flow simulator 2 includes an arithmetic unit 21, an input unit 22, a display unit 23, an external interface 24, and a storage unit 25. The arithmetic unit 21 performs various data processing for driving simulation of the electric vehicle 3. As the arithmetic device 21, for example, one or more CPUs (central computing units) may be used. The input device 22 is operated by the manager of the traffic flow simulator 2 and receives data input by various operations. The display device 23 displays various images when the traffic flow simulator 2 operates. The input device 22 and the display device 23 function as a man-machine interface of the traffic flow simulator 2.

  The external interface 24 is an interface for connecting to an external communication unit. The traffic flow simulator 2 communicates with the host computer 1 via the external interface 24.

  The storage unit 15 stores a program for operating the arithmetic unit 21 and also stores various data necessary for data processing by the arithmetic unit 21. In the present embodiment, the traffic flow simulation program 26 is installed in the storage device 15, and the road network model 27 is stored.

  The traffic flow simulation program 26 is a program that causes the arithmetic device 21 to execute traveling simulation of the electric vehicle 3. When it is judged by the driving simulation by the traffic flow simulation program 26 whether or not the electric vehicle 3 can arrive at the destination, and after the electric vehicle 3 arrives at the destination, the vehicle departs from the destination as the next departure place The reachable range is calculated. Here, the traffic flow simulation program 26 has a function of simulating the traffic flow generated when a large number of vehicles (including the electric vehicle 3) travel on the road. Therefore, it can be determined whether the electric vehicle 3 can arrive at the destination in the situation where the traffic flow exists, and after the electric vehicle 3 arrives at the destination, the situation where the traffic flow exists The reachable range is calculated when leaving the destination as the next departure place.

  The road network model 27 is a model that simulates a road network, and is used for traveling simulation by the traffic flow simulation program 26. FIG. 4 is a schematic view showing the contents of the road network model 27. As shown in FIG. The road network model 27 includes links 28 and nodes 29. The road network is represented by links 28 and nodes 29. The node 29 represents an intersection, and the link 28 represents a road connecting two intersections (that is, a road connecting the nodes 29). In each link 28, information indicating the structure of the road (for example, information indicating the number of lanes, presence / absence of the left / right lane, etc.) is set. Further, in the node 29, information representing the structure of the intersection (information representing the presence or absence of installation of a traffic light, etc.) is set. Further, the altitude can be set for each node 29, and the gradient of the road corresponding to the link 28 connecting the two nodes 29 can be determined from the difference between the altitudes of two adjacent nodes 29. By determining the gradient of the road corresponding to the link 28, it is possible to accurately calculate the amount of power consumed by the electric vehicle 3 when traveling on the road. Furthermore, weather (fine, rain, snow) and temperature can be set in the road network model 27. This makes it possible to estimate the amount of power consumed by vehicle accessories (air conditioners, heaters, wipers, etc.) installed in the electric vehicle 3, and contributes to accurately calculating the amount of power consumed by the electric vehicle 3. Do.

  Like the host computer 1, the traffic flow simulator 2 is not implemented as a single computer, but may be implemented as a series of computing resources (network, server, storage, application) for realizing cloud computing. Good.

  Subsequently, an operation of the EV management system 10 of the present embodiment, in particular, data processing in the host computer 1 and the traffic flow simulator 2 will be described. In the present embodiment, the EV information providing server operating on the host computer 1 uses information indicating whether or not the electric vehicle 3 can reach the destination from the departure point (which may be the current point) as the user terminal 4 of the EV user. To provide. In addition, the EV information provision server displays a reachable range display screen that displays the reachable range of the electric vehicle 3 when the electric vehicle 3 arrives at the destination and then departs from the destination as the next departure place. An operation of providing display data for display to the user terminal 4 is performed. The user terminal 4 receives the display data and displays the reachable range display screen.

  One feature of the reachable range display screen is a point where it is confirmed that the electric car 3 can reach when the electric vehicle 3 departs from the destination as the next departure place by the travel simulation by the traffic flow simulator 2 (hereinafter referred to as “reach ) Is generated so as to be visually recognizable. As an example, the reachable point is the SOC of the battery at a specific value (0%) when the electric vehicle 3 arrives at the destination, then departs from the destination and reaches each of the reachable points. It may be determined as a point that may be In one embodiment, the specific value is set to 0% (i.e., the remaining power of the battery is zero). In this case, when the electric vehicle 3 arrives at the destination and then leaves the destination again as the next departure point, the remaining energy of the battery of the electric vehicle 3 becomes zero (ie, the reachable point) It will be defined as a point where the SOC is 0%). An example of such a reachable range display screen is illustrated in FIG. 11 (details will be described later).

  According to such a reachable range display screen, the EV user can know in detail the reachable range from the destination when the electric vehicle 3 tries to move further after arriving at the destination. This is useful for the EV user to judge the action that can be taken after reaching the destination.

  Hereinafter, the operation of the host computer 1 as an EV information providing server will be described in detail. FIG. 5 is a functional block diagram showing an example of the operation of the host computer 1 as an EV information providing server.

  The user terminal 4 has a function of sending to the host computer 1 a reachability determination request 41 inquiring whether the electric vehicle 3 can arrive at the destination according to the operation by the EV user. When the EV information provision server is a web server, such a function may be realized by accessing the web site provided by the EV information provision server by the web browser of the user terminal 4. The reachability determination request 41 includes user information and destination information indicating a destination. The user information includes a vehicle ID identifying the electric vehicle 3. If the user wishes to know the current position of the electric vehicle 3 (the current position) and whether the electric vehicle 3 can arrive at the destination for the current SOC, the reachability determination request 41 indicates that May be included. Also, when it is desired that the electric vehicle 3 at a specific departure position at a specific departure time departs from the departure position at a specific SOC, it is desired to know whether the electric vehicle 3 can reach the destination. The reachability determination request 41 may include information indicating that, departure time information indicating a departure time, departure point information indicating a departure point position, and SOC information indicating the specific SOC. For example, if you want to know whether it is possible to arrive at a destination after performing a full charge at a specific charge station, the reachability determination request 41 must have an origin location indicating the position of the charge station and an SOC of 100%. Are generated to include SOC information indicating.

  When the host computer 1 receives the reachability determination request 41, the host computer 1 performs input information processing 31. Specifically, in the input information processing 31, the EV management database 18 is searched using the vehicle ID included in the user information of the reachability determination request 41, and the latest probe of the electric vehicle 3 corresponding to the vehicle ID Information 43 is obtained. In FIG. 5, user information used to search the EV management database 18 is indicated by reference numeral 42. The latest probe information 43 acquired includes information indicating the current SOC of the electric vehicle 3 and current location information indicating the current position of the electric vehicle 3. In the input information processing 31, a simulation request 44 including the information obtained in the input information processing 31 (that is, the reachability determination request 41 and the latest probe information 43) is created, and the simulation request 44 is input data for the simulation. It is handed over to the creation process 32.

  In the simulation input data creation process 32, input data 45 having a data format compatible with the traffic flow simulator 2 is created based on the simulation request 44. The input data 45 includes departure point information indicating the position of the departure point, destination information indicating the position of the destination, and SOC information indicating the SOC of the electric vehicle 3 at the departure point. The input data 45 is delivered to the traffic flow simulator 2.

  Here, the method of creating the input data 45 differs depending on the content of the reachability determination request 41 included in the simulation request 44. When the reachability determination request 41 indicates that it is desired to know whether the current position of the electric vehicle 3 (the current position) and the current vehicle can reach the destination, the current SOC Starting point information is generated to indicate the current position of the electric vehicle 3 indicated in the probe information, and SOC information of the input data 45 is generated to indicate the SOC indicated in the latest probe information. That is, with the current position of the electric vehicle 3 as the departure point, input data 45 is generated to determine whether the current SOC can reach the destination. On the other hand, when the reachability determination request 41 indicates that it is desired to know whether the electric vehicle 3 can arrive at the destination for the specific electric vehicle 3 position (departure position) and the specific SOC, Starting point information is generated to indicate the specific position, and SOC information of the input data 45 is generated to indicate the specific SOC. That is, the input data 45 is generated to determine whether the destination can be reached when the specific position is the departure point and the SOC of the electric vehicle 3 is the specific SOC at the departure point.

  The traffic flow simulator 2 performs traveling simulation based on the delivered input data 45, and returns simulation result data 46 indicating the result of the traveling simulation to the host computer 1. In the travel simulation, the road network model 27 stored in the storage device 25 of the traffic flow simulator 2 is used.

  FIG. 6 is a flow chart showing processing by the traffic flow simulator 2. First, when driving simulation is performed (step S01) and the electric vehicle 3 has the SOC at the departure point indicated by the departure point information as the SOC indicated by the SOC information, the destination point information from the departure point It is determined whether or not the destination indicated in can be reached (step S02). If it is determined that the destination can not be reached in the driving simulation, a point (power failure point) at which the SOC of the battery of the electric vehicle 3 is 0% is recorded (step S09), information indicating that the destination can not be reached, And, simulation result data 46 is generated so as to include the power failure point information indicating the power failure point. The missing point information may include a traveling time required to travel from the departure point to the missing point. In this case, it is displayed on the user terminal 4 that the destination can not be reached and the power failure point obtained by the driving simulation.

  On the other hand, when it is determined that the destination can be reached, the processes of steps S03 to S08 are performed. In the process of steps S03 to S08, after the electric vehicle 3 arrives at the destination, processing is performed to calculate a reachable point (that is, a reachable point) when leaving the destination as the next departure place. . Here, the number of reachable points calculated in steps S03 to S08 is plural, and the plural reachable points are calculated so as to be located in various directions with respect to the destination and surround the destination. Be done. The processes of steps S03 to S08 will be described below.

  First, the destination indicated in the destination information of the input data 45 is set as the departure place (next departure place) in the next traveling simulation (step S03). Furthermore, a plurality of next destination ranges are set so as to surround the next departure place (that is, the destination indicated in the destination information of the input data 45). Here, the next destination range is the range of the position set as the destination in the next driving simulation. It should be noted that the next destination range is automatically set by the traffic flow simulator 2 and is not specified by the user. As understood from the following description of the process, the next destination range is only a range set to select a destination temporarily set for calculation of the reachable point. However, the number of next destination ranges set may be variably adjusted by the user.

  FIG. 7 shows an example of the next destination range set in step S03. In step S01, a driving simulation is performed to determine whether the departure point 51 can reach the destination 52. In step S02, it is determined that the departure point 51 can reach the destination 52 from the route 53.

  In this case, a plurality of next destination areas 54 are radially set to surround the destination 52 (i.e., the next departure place). Here, the next destination range 54 is sufficiently away from the next departure place, and is set at a position where the electric vehicle 3 is not expected to reach the position within the next destination range from the next departure place. In one embodiment, the next destination range 54 may be set as a circle or regular polygon of a certain size. In the example of FIG. 7, each next destination range 54 is set as a circle whose center is located on a circle 60 centered on the destination 52. Here, the radius of the circle 60 is determined based on the SOC of the electric vehicle 3 at the destination 52 and compared to the length of the line segment corresponding to the possible travel distance estimated from the SOC of the electric vehicle 3 at the destination 52 It is set large enough. Most simply, the radius of the circle 60 may be determined by multiplying the SOC of the electric vehicle 3 at the destination 52 by a predetermined coefficient.

  Subsequently, it is determined whether or not the node 29 of the road network model 27 exists in each of the next destination areas 54 (step S05). If there is a next destination range 54 in which the node 29 does not exist, adjustment is performed for the next destination range 54 (step S06). Adjustment of the next destination range 54 is performed by changing the size and position of the next destination range 54. For example, when the next destination range 54 is set as a circle, the adjustment of the next destination range 54 may be performed by changing the position of the center of the circle and / or the radius of the circle. When the next destination range 54 is set as a regular polygon, the adjustment of the next destination range 54 may be performed by determining the position of the center of the regular polygon and / or the distance from the center to the vertex of the regular polygon. You may go by changing. The adjustment of the next destination range 54 is repeated until each next destination range 54 is set so that at least one node 29 is included in each next destination range 54.

  After the next destination range 54 is determined so that at least one node 29 is included in each next destination range 54, as shown in FIG. It is determined (step S07). If there is only a single node 29 in a certain next destination area 54, that node 29 is determined as the next destination 55. On the other hand, when there are a plurality of nodes 29 in a certain next destination area 54, one of them is selected as the next destination 55. As a result, the next destination 55 is also determined to surround the destination 52 (the next departure point).

  Subsequently, a driving simulation is performed to simulate the traveling of the electric vehicle 3 from the next departure point (i.e., the destination 52) to the next destination 55 (step S08). As the SOC at the next departure point, the SOC of the electric vehicle 3 at the destination 52 obtained in the traveling simulation at step S01 is used.

  Here, since the next destination range is determined sufficiently away from the next destination in step S04, in the driving simulation of step S08, a power failure point (between the next departure place and the next destination) ( That is, the point at which the SOC is 0% should be determined. A point on the route from the next departure point to the power shortage point is a point judged to be reachable when the destination point is left as the next departure point. One of the points on the route from the next departure point to the power failure point (excluding the next departure point, including the power failure point) is calculated as the "reachable point".

  The reachable point may be determined as a power failure point, or may be determined as a point at which the SOC is a specific value (for example, 20%). Also, the reachable point may be determined as a point that can be reciprocated from the next destination (that is, a point that can be reached from the next destination and returned to the next destination again). In addition, the reachable point is determined as a point on the route from the next departure point to the power shortage point and arriving at the time when a predetermined elapsed time (for example, 30 minutes) has elapsed starting from the next departure point May be Furthermore, the reachable point may be determined as a point on the route from the next departure point to the power shortage point, which point will be reached when traveling from the next departure point and traveling a predetermined travel distance.

  FIG. 9 is a diagram showing an example of the reachable points 57 determined for each of the next destinations 55. As shown in FIG. The point reachable from the next departure point (ie, the destination point 52) through the route 56 is determined as the reachable point 57. In the traveling simulation of step S08, the route 56 which can reach each reachable point 57 from the next departure place is specified, and further, the traveling time and / or time required to reach each reachable point 57 from the next departure place The travel distance is also calculated.

  The reachable point 57 calculated by the driving simulation in step S08, the associated information (eg, SOC at the reachable point 57, the route 56 which can reach each reachable point 57 from the next departure point, and the next) The travel time required to reach each reachable point 57 from the departure point is recorded (step S09), and the processing by the traffic flow simulator 2 is completed.

  Further, the result of processing by the traffic flow simulator 2 is returned to the host computer 1 as simulation result data 46. The simulation result data 46 includes arrival availability information indicating whether or not the electric vehicle 3 can reach the destination indicated in the destination information from the point of origin indicated in the departure point information. . In addition, the simulation result data 46 indicates a reachable point (a point judged to be reachable when the electric vehicle 3 arrives at the destination and then departs from the destination as the next departure point). It contains possible point data. Also, the simulation result data 46 includes information related to the reachable point 57 (e.g., SOC at the reachable point 57, a route 56 by which each reachable point 57 can be reached from the next departure point, and Travel time required to reach each reachable point 57 may be included. Furthermore, the simulation result data 46 may include information indicating the position of the next destination 55 set in step S07.

  Returning to FIG. 5, when the simulation result data 46 is returned to the host computer 1, the map display processing 33 for generating the display data 47 for displaying the reachable range display screen is performed. Here, as described above, the reachable range display screen refers to the reachable range of the electric vehicle 3 when the electric vehicle 3 arrives at the destination and then departs from the destination as the next departure place. It is a screen to be displayed. The display data 47 is sent to the user terminal 4, and the reachable range display screen corresponding to the display data 47 is displayed on the user terminal 4.

  FIG. 10 is a diagram showing an example of the reachable range display screen. On the reachable range display screen of FIG. 10, a departure point 51, a destination 52, a route 53 connecting the departure point 51 and the destination 52, a reachable point 57, and a boundary 58 are illustrated. In the example of FIG. 10, the boundary line 58 is illustrated as a closed curve passing through the reachable point 57 and surrounding the destination 52 (ie, the next departure point). The closed curve used as the boundary line 58 can be most simply constructed by connecting line segments connecting adjacent reachable points 57. Also, the closed curve used as the boundary line 58 may be drawn as any approximate curve, for example, a Bezier curve with the reachable point 57 as a control point. The order of the Bezier curve may be appropriately determined in consideration of the accuracy of the boundary line 58 and the number of reachable points 57. In FIG. 10, the boundary line 58 is configured by connecting the reachable points 57 adjacent to each other by a curve formed by connecting a plurality of line segments.

  Further, the reachable range that can be reached from the next departure point may be displayed on the reachable range display screen. In this case, the reachable range may be displayed by displaying the inside of the boundary 58 in a color tone different from that of the portion outside the boundary 58.

  The boundary line 58 may not necessarily be displayed. If a sufficient number of reachable points 57 are shown, the user can practically recognize the reachable range reachable from the next departure place. Also, only the boundary line 58 may be displayed, and the mark indicating the reachable point 57 may not be illustrated. Even in this case, the reachable point 57 can be visually recognized as a position where the road forming the route 56 and the boundary 58 intersect.

  FIG. 11 shows another example of the reachable range display screen. As illustrated in FIG. 11, the next destination 55 determined in step S07 may be displayed on the reachable range display screen. However, as described above, since the next destination 55 is not a point set by the user (it is a point automatically set by the traffic flow simulator 2), it is necessary to display the next destination 55 Note also the thinness.

  FIG. 12 shows still another example of the reachable range display screen. In the driving simulation in step S08 of the present embodiment, for each power failure point, a plurality of reachable points are determined under different conditions between the next departure point and the power failure point, and are shown on the reachable display screen. Also good. In this case, the reachable point corresponding to the same condition may be connected by a closed curve on the reachable range display screen to show the reachable range as a chart similar to the radar chart. The parameters used to determine the reachable point include the SOC, the elapsed time after departure from the next departure location, and the travel distance after departure from the next departure location.

  In the example of FIG. 12, in the traveling simulation, a point where the SOC is the first value (for example, 10%) is determined as the reachable point 571 and the SOC is the second value different from the first value (for example, , 20%) are determined as reachable points 572. The latitude and longitude information of the reachable points 571 and 572 is stored in the storage unit 25 of the traffic flow simulator 2. The boundary line 581 passes through the reachable point 571, passes through the reachable point 57, and is illustrated as a closed curve surrounding the destination 52 (ie, the next departure point). Similarly, boundary line 582 is illustrated as a closed curve passing through reachable point 572 and surrounding destination 52 (ie, the next departure point). In the example of FIG. 12, reachable points are calculated for two SOC values, but reachable points may be calculated for three or more SOC values.

  A similar reachable range display screen may be created for the elapsed time after departure from the next departure point. Using FIG. 12 as an example, a point whose elapsed time after departure from the next departure point is the first value (for example, one hour) is determined as the reachable point 571 and the elapsed time is the first value. A point which is a second value different from (eg, 45 minutes) is determined as the reachable point 572. Furthermore, a similar reachable range display screen may be created for the traveling distance after departure from the next departure place. A point at which the traveling distance after departure from the next departure point is a first value (for example, 20 kilometers) is determined as the reachable point 571, and the traveling distance is different from the first value (for example, a second value) , 15 km) is determined as the reachable point 572.

  Thus, the data processing performed in the host computer 1 and the traffic flow simulator 2 to display the reachable range display screen on the user terminal 4 is completed.

  According to the operation of the EV management system 10 of the present embodiment as described above, information on whether the electric vehicle 3 can arrive at the destination is provided to the user, and after arriving at the destination, the purpose thereof It is possible to provide the user with a reachable range display screen indicating the reachable range of the electric vehicle 3 when the ground is made the next departure place. The reachable range display screen displays a reachable point determined to be reachable by the simulation taking into consideration the actual travel route and the travel state, and this determines the action that can be performed after the destination is reached. More useful for

It should be noted here that, since the plurality of reachable points are obtained by the driving simulation, the straight line distances from the destination (the next departure place) may not be the same.
That is, two of the plurality of reachable points may have different linear distances from the destination.
In such a case, the closed curve forming the boundary 58 will not be displayed as a circle.
The reachable point can not be calculated in detail with the method of calculating the reachable distance when starting from the destination based on the SOC after reaching the destination (without performing simulation), for example, After arriving at the ground, the reachable range when leaving the destination can only be displayed as a circle. Thus, in the present embodiment, a reachable range display screen showing a more detailed reachable range is obtained in consideration of the actual travel route and the travel state. This contributes to providing the user with more useful information for determining action that can be taken after reaching the destination.

  In the calculation of the reachable point 57 according to the above-described procedure and the generation of the reachable range display screen, in the case where the next destination range 54 is set to an area where there is no road, for example, in the sea, in step S04. In addition, the reachable range may be displayed narrower than the reachable range from the next departure point. FIG. 13 shows such a problem.

  For example, in FIG. 13, it is assumed that the next destination range 54A is set to the sea. In this case, since the node 29 of the road network model 27 does not exist in the next destination range 54A, it is necessary to adjust the next destination range in steps S05 and S06. Then, as a result of adjustment of the next destination range, as shown in FIG. 13, the next destination range includes the next destination range 54A initially set and the next departure point (ie, the destination 52). It may be set at a position between and near the coastline. In such a case, the next destination 55A corresponding to the next destination range 54A is not sufficiently separated from the next departure place (i.e., the destination 52), and according to the driving simulation in step S08, the next purpose is the next goal The result may be that the ground 55A can be reached.

  At this time, if the next destination 55A is determined as the reachable point, and the boundary 58 is determined using the next destination 55A and the adjacent reachable point 57A, the reachable range may be underestimated. This is because the area 59 in the triangle having the next reachable point 57A, the center of the next destination area 54A, and the next destination 55A as its apex originally includes an area reachable from the next departure point. It is because it gets.

FIG. 14 is a conceptual diagram illustrating a solution to the underestimated coverage problem in one embodiment. The next destination range is set between the first destination range 54A set first and the next origin (ie, the destination 52), and the next destination 55A is selected from the next destination range, and It is assumed that the result of the traveling simulation at step S08 is that the next destination 55A can be reached from the next departure point. In this case, the position between the next destination 55A and the position of the next destination range 54A initially set, more specifically, the position of the next destination 55A and the next destination range 54A initially set (for example, If the next destination range 54A is a circle or a regular polygon, a virtual reachable position 61 is set at a position on a line segment 62 connecting the center 54Aa). Preferably, the virtually reachable position 61 is determined so that the distance ΔL between the virtually reachable position 61 and the next destination 55A satisfies the relationship of the following equation (1):
ΔL = {L1 / (SOC02−SOCd2)} × SOCD2 (1) where L1 is a distance traveled along the route 56A from the destination 52 (the next departure place) to the next destination 55A, SOCo2 is the SOC at arrival at the destination 52 calculated in the traveling simulation at step S01, and SOCd2 is the SOC at the next destination 55A calculated in the traveling simulation at step S08.

In this case, the boundary line 58 may be determined as a curve (closed curve) passing through the virtual reachable position 61 and the adjacent reachable point 57A. In FIG. 13, the portion 58 a of the boundary line 58 between the adjacent reachable point 57 A and the virtual reachable position 61 is constituted by a line segment connecting the reachable point 57 A and the virtual reachable position 61. The case is illustrated.
Portion 58a of boundary line 58 may be a curve.

  By thus determining the virtual reachable position 61 and the boundary 58, underestimation of the reachable range can be suppressed. Specifically, according to the method of determining the virtual reachable position 61 and the boundary 58 described above, a triangular area 63 having the next reachable point 57A, the next destination 55A and the virtual reachable position 61 as apexes It will be illustrated as an area within the boundary line 58 (i.e. reachable area). The area 63 is an area which is considered to be actually reachable. Therefore, by including the area 63 as an area inside the boundary 58, underestimation of the reachable range can be suppressed. In addition, when the result that it can arrive to the following destination 55A is obtained by the driving simulation of step S08, calculation of the virtual reachable position 61 and the determination of the boundary line 58 by such a procedure are performed. There is no need.

  Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the embodiments described above. It will be apparent to those skilled in the art that the present invention can be practiced with various modifications.

  For example, although the embodiment in which the host computer 1 and the traffic flow simulator 2 perform data processing using different hardware resources is described above, the host computer 1 and the traffic flow simulator 2 have the same hardware. It may be implemented as a system that uses wear resources.

  Further, although the embodiment in which the reachable range display screen is generated using the host computer 1 and the traffic flow simulator 2 has been described above, other devices (for example, The navigation system can perform the operations performed in the host computer 1 and the traffic flow simulator 2. However, in the case where the traffic flow simulator 2 is used as in the present embodiment, a traffic flow generated by a large number of vehicles (including the electric car 3) traveling on the road is simulated, and the traffic flow is present. It can be determined whether the electric vehicle 3 can arrive at the destination in the situation. In addition, in the present embodiment, in a situation where there is a traffic flow, after the electric vehicle 3 arrives at the destination, the reachable range display screen showing the reachable range when leaving the destination as the next departure place is displayed. Can be generated. These contribute to providing more accurate information.

  In the above embodiment, an example in which the electric vehicle is used as the motor-driven movable body is given. However, the present invention mounts a battery such as a battery-powered motorcycle, and uses the electricity stored in the battery It should be noted that the present invention can be applied to a motor-driven movable body that drives drive wheels.

1: host computer 2: traffic flow simulator 3: electric vehicle 4: user terminal 4a: personal computer 4b: portable terminal 5: wireless communication network 6: network 10: EV management system 11: computing device 12: input device 13: display device 14: external interface 15: storage device 16: EV management server software 17: EV information provision server software 18: EV management database 21: arithmetic device 22: input device 23: display device 24: external interface 25: storage device 26: traffic flow Simulation program 27: Road network model 28: Link 29: Node 31: Input information processing 32: Simulation input data creation processing 33: Map display processing 41: Reachability determination request 42: User information 4 3: probe information 44: simulation request 45: input data 46: simulation result data 47: display data 51: departure place 52: destination 53: route 54, 54A: next destination range 54Aa: center 55: next destination 55A: Next destination 56: route 56A: route 57: reachable point 57A: reachable point 58: boundary line 58a: part 59: area 60: circle 61: virtual reachable position 62: line segment 63: area

Claims (5)

A user terminal for communicating with an information providing apparatus to a motorized mobile body, comprising:
The user terminal is
Sending a request to the information providing device to determine whether the electric mobile unit can reach the destination from the certain point from SOC (state of charge) of the electric mobile unit at a certain point;
When it is determined that the destination can be reached by the information providing device, the electric mobile body is set so as to surround the destination when it leaves the destination after reaching the destination. Display data indicating a plurality of reachable points reachable by the SOC of the motor-driven movable body at the certain point from the node included in the range of the next destination to the next destination, Receiving from the information providing apparatus display data in which a destination and the plurality of reachable points are both composed of node information;
By connecting adjacent reachable points among the plurality of reachable points based on the received display data, the reachable range to the next destination is displayed on the screen when leaving the destination. User terminal. When two of the plurality of reachable points have different distances from the destination, the reachable range is displayed on the screen by connecting adjacent reachable points in a non-circular shape. User terminal described in. The user terminal according to claim 1 or 2, wherein a route from the destination to the plurality of reachable points is further added to display the reachable range on the screen. The user terminal according to claim 3, wherein a route from the certain point to the destination is further added, and the reachable range is displayed on the screen. The user terminal according to any one of claims 1 to 4, wherein a part inside the reachable range is displayed in a different color tone from a part outside the reachable range.

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