JP2017203733A - Cruisable range display device, cruisable range display method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a "cruisable range display device", a "cruisable range display method" and a "program" capable of drastically reducing a processing load in obtaining a vehicle cruisable range.SOLUTION: The cruisable range display device, method and program acquire prediction information obtained by associating a plurality of nodes constituting a road network with the predicted cruising power remaining value at a past time point about each of the plurality of nodes (S20), calculate a rate of change of a remaining cruising power from the past time point to the present time point (S22, S24), calculate a predicted cruising power remaining value at the present time point of a node by using the calculated rate of change of the remaining cruising power and the predicted cruising power remaining value at the past time point, and generate cruisable range information representing a cruisable range at the present point time by using the calculated predicted cruisable power remaining value at the present time point (S23, S28).SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cruising range display device that displays a cruising range of a vehicle, a cruising range display method, and a program.

  A technique for displaying a cruising range of a vehicle in a spider web shape on a map is known (see, for example, Patent Document 1). In Patent Document 1, by using a plurality of road map data having different levels of detail according to the remaining cruising capacity such as a battery remaining amount and obtaining a cruising route, the load when calculating the cruising route is reduced. Obtaining techniques are disclosed. Specifically, when the remaining battery level is less than the first threshold value (10%), the most detailed third road map data is selected, and when the remaining battery level is greater than or equal to the first threshold value (10%) and less than the second threshold value (20%), It is possible to select the second road map data having a lower level of detail than the three road map data, and to select the first road map data having a lower level of detail than the second road map data at a second threshold (20%) or more. (Paragraphs [0047] to [0049]). Thereby, it is possible to reduce the calculation load as compared with a case where a cruising route is obtained only from the third road map data having a high degree of detail.

JP 2014-35215 A

  However, when determining the cruising range of a vehicle that accompanies movement, the same processing (for example, the above-described calculation or the like) is performed repeatedly (for example, periodically) to cope with the movement of the vehicle. Therefore, as described above, although the processing load is reduced by using road map data with a low level of detail, the same processing must be repeated for a wide range of road networks in the road map data. The processing load when determining the possible range is still large.

  The present invention has been made in view of such circumstances, and a cruising range display device, a cruising range display method, and a program capable of dramatically reducing the processing load when determining the cruising range of a vehicle. Is to provide.

  A cruising range display device according to the present invention is a cruising range display device that displays a cruising range of a vehicle, and includes a plurality of nodes constituting a road network and a past time point for each of the plurality of nodes. A storage unit that stores prediction information associated with a predicted cruising surplus value, and reads out the prediction information from the storage unit to obtain a predicted cruising surplus value at the past time point. And calculate the predicted cruising reserve value at the current time of the node using the calculated change rate of the cruising reserve power and the predicted estimated cruising reserve value at the past time point. Generated by the information processing means, information processing means for generating cruising range information representing the cruising range at the current time point using the calculated predicted cruising surplus value at the current time point, A configuration and display means for displaying a cruising range at the current time based on the cruising range information.

  With such a configuration, the current time of the nodes constituting the road network using the rate of change of the remaining cruising power from the past time point to the current time point and the predicted cruising remaining power value at the past time point stored in advance. The predicted cruising surplus value at is calculated, and cruising range information indicating the cruising range at the current time is generated using the calculated predicted cruising surplus value at the current time, and the generated cruising range information is generated. Based on this, the cruising range at the current time is displayed on the display means. Therefore, it is possible to obtain the predicted cruising surplus value of each node at the current time point using the predicted cruising surplus power value at the past time point without newly obtaining from the beginning. That is, when obtaining the cruising range, the processing can be simplified as compared with the case of newly obtaining all from the beginning.

  In the cruising range display device according to the present invention, the information processing means determines whether or not the vehicle is moving from the past time point to the current time point, and when it is determined that the vehicle is not moving Alternatively, the change rate of the remaining amount of actual fuel from the past time point to the current time point of the vehicle may be set as the rate of change of the remaining cruising power.

  With such a configuration, when it is determined that the vehicle is not moving, the rate of change in the remaining fuel capacity is the rate of change in the remaining cruising power. This can be obtained, and the processing load can be further reduced.

  In the cruising range display device according to the present invention, the cruising range includes a first cruising range that is within a predetermined angle range with respect to the moving direction of the vehicle, and a second that is outside the predetermined angle range. The information processing means determines whether or not the vehicle is moving from the past time point to the current time point, and if it is determined that the vehicle is moving, The first cruising range is set using the predicted cruising surplus value at the current time point, and the peripheral portion of the cruising range at the past time point corresponding to outside the predetermined angle range is crushed. The correction area corrected according to the rate of change of the remaining power is set as the second cruising range, and cruising range information representing the first cruising range and the second cruising range is generated. be able to.

  With such a configuration, the cruising range has a first cruising range that is within a predetermined angle range with respect to the moving direction of the vehicle, and a second cruising range that is outside the predetermined angle range, If it is determined that the vehicle is moving, the first cruising range is set using the predicted cruising surplus value at the current time point, and is outside the range of a predetermined angle with respect to the moving direction of the vehicle. A correction region in which the peripheral portion of the cruising range at the past corresponding to is corrected according to the rate of change of the cruising remaining power is set as the second cruising range, and the first cruising range and the second cruising range are set. Since the cruising range information representing the range is generated, the second cruising range can be obtained simply and easily using the cruising range at the past time point, and the cruising range at the past time point is used. The processing load is further reduced compared to Rukoto can.

  In the cruising range display device according to the present invention, the information processing means may be configured such that a formation region formed based on a node having the predicted cruising surplus value equal to or greater than a predetermined value is the cruising range. .

  With such a configuration, a formation region formed based on a node whose predicted cruising surplus value is equal to or greater than a predetermined value becomes a cruising range, so that a predetermined value can be set as appropriate to allow a margin in the cruising range. it can.

  A cruising range display method according to the present invention is a cruising range display method for displaying a cruising range of a vehicle, and includes a plurality of nodes constituting a road network and a past time point for each of the plurality of nodes. Predictive information associated with the predicted cruising reserve value is acquired, the rate of change in cruising reserve power from the past time point to the current time point is calculated, and the calculated rate of change in cruising power and the prediction at the past time point are calculated. The predicted cruising remaining power value at the current time point of the node is calculated using the cruising remaining power value, and the cruising range at the current time point is expressed using the calculated predicted cruising remaining power value at the current time point. An information generation step for generating cruising range information; and a display step for displaying the cruising range at the current time point based on the cruising range information generated by the information generation step. It is obtain things.

  A program according to the present invention is a program for causing a computer to execute a process in a cruising range display device that displays a cruising range of a vehicle, and a plurality of nodes constituting a road network and each of the plurality of nodes Obtaining prediction information associated with predicted cruising surplus values at past time points, calculating a rate of change of cruising surplus power from the past time point to the current time point, and calculating the rate of change of the cruising surplus power and the past The predicted cruising surplus value at the current time point of the node is calculated using the predicted cruising surplus value at the time point, and the predicted cruising surplus power value at the current time point is calculated using the calculated predicted cruising surplus power value at the current time point. An information generation step for generating cruising range information representing a cruising range, and cruising at the current time point based on the cruising range information generated by the information generation step It is intended to execute a display control step of displaying the coverage area on the display unit to the computer.

  According to the cruising range display device, the cruising range display method and the program according to the present invention, it is possible to simplify the processing when obtaining the cruising range as compared with the conventional case, so the cruising range of the vehicle. It is possible to reduce the processing load at the time of obtaining.

It is a block diagram which shows an example of a structure of the cruising range display apparatus which concerns on embodiment of this invention. It is a figure for demonstrating an example of a structure of a road network. It is a figure which shows an example of a structure of prediction information. It is a flowchart which shows an example of the flow of the process by the cruising range display apparatus which concerns on embodiment of this invention. It is a figure for demonstrating an example of the setting of the cruising range. It is a figure for demonstrating an example of the setting of the cruising range when the vehicle is not moving. It is a figure for demonstrating an example of the setting of the cruising range in case the vehicle is moving. It is a figure which shows an example of the display of the cruising range.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  A cruising range display device (hereinafter abbreviated as a display device) 100 shown in FIG. 1 is an in-vehicle device mounted on a vehicle, and displays the cruising range of the vehicle (a range in which the vehicle can travel from the current position). To do. Note that the display device 100 may be an electronic device such as a smartphone or a tablet used in the vehicle. As illustrated, the display device 100 includes a processing unit 10, a reception unit 11, a storage unit 12, a display unit 13, and an operation unit 14.

  The processing unit 10 (information processing means according to the present embodiment) is configured by a computer unit (for example, including a CPU). The processing unit 10 is connected to a receiving unit 11 so that the processing unit 10 can acquire various information received by the receiving unit 11. The receiving unit 11 is configured to be able to receive position information such as GPS (Global Positioning System) information and traffic jam information based on VICS (registered trademark). For example, the position information has a configuration in which attributes such as the current time and attributes such as the vehicle position (latitude, longitude) are associated, and the traffic congestion information includes the time such as the transmission time and the attributes such as the congestion road around the vehicle. It has an associated configuration.

  The processing unit 10 is connected to a storage unit 12 (storage means according to the present embodiment) such as a hard disk drive that stores various information such as information used for processing in the processing unit 10 and programs. The storage unit 12 stores map information (electronic map data) as information used for processing in the processing unit 10. The map information may be stored in advance in the storage unit 12, or acquired and updated via the network by the reception unit 11 under the control of the processing unit 10, and stored in the storage unit 12. It may be.

  The map information has road information related to the road network as shown in FIG. The road information includes, as information constituting the road network, link information representing road links (L1, L2,...) On an electronic map, and end points such as start points and end points of road links associated with each link information. Node information representing nodes (N1, N2,...). For example, each link information is composed of attribute information related to road links such as road ID, road name, road type, speed limit, road length, road width, road gradient, etc. Each node information includes node ID, node name (for example, , Intersection name, etc.), node type (for example, intersection, dead end, etc.), node coordinate values (latitude and longitude), and other attribute information related to the node.

  In the storage unit 12 shown in FIG. 1, as information used for processing in the processing unit 10, each of a plurality of nodes constituting the road network as shown in FIG. Prediction information having a configuration in which the remaining amount of fuel and the traffic congestion amount of each node are associated with each other is stored. The predicted fuel remaining amount is basically static information that does not change over time, and remains when the vehicle is driven from the current position to the position corresponding to each node (without considering traffic consumption). The remaining fuel amount (ratio (%) of the remaining fuel amount when the full tank state is 100%) is shown. Congestion consumption is dynamic information that changes over time, and indicates the amount of fuel consumed due to traffic congestion than normal (the ratio of fuel consumption (%) when the full tank is 100%). ing. The processing unit 10 reads the prediction information from the storage unit 12 to predict that the fuel will remain when it is assumed that the vehicle has traveled from the current position to the position corresponding to each node (considering traffic consumption). The remaining amount (ratio (%) of the remaining amount of fuel when the full tank state is 100%) can be acquired (calculated) as a predicted cruising surplus value. For example, in the case of the node N2 in FIG. 3, the predicted cruising surplus value is 25% (predicted remaining fuel amount) −5% (congestion consumption) = 20% (predicted cruising surplus value). The generation of the prediction information will be described in detail when the processing by the processing unit 10 described later is described.

  As shown in FIG. 1, the processing unit 10 further includes a display unit 13 configured by an LCD or the like and a touch panel on the display unit 13, and an operation unit used for inputting processing instructions and various information. 14 is connected. The display unit 13 (display unit according to the present embodiment) displays various information such as an image representing a cruising range of the vehicle based on processing (described later) in the processing unit 10 under the control of the processing unit 10. .

  The processing unit 10 is connected to a vehicle information management device 200 that is an external device, and is configured so that the processing unit 10 can acquire various types of information output from the vehicle information management device 200. Specifically, the vehicle information management device 200 is a remaining amount that represents a fuel remaining value for vehicle travel (a battery remaining value in the case of an electric vehicle) measured by a sensor in response to a request from the processing unit 10. Various information related to the vehicle such as information, fuel consumption information regarding the fuel consumption (electric cost in the case of an electric vehicle) representing the cruising distance characteristics of the vehicle, and the like are output. Note that the fuel consumption information may be acquired via the network by the receiving unit 11 under the control of the processing unit 10 or may be stored in the storage unit 12 in advance. Moreover, you may comprise so that the user of the display apparatus 100 may acquire by inputting or selecting using the operation part 14. FIG. Furthermore, the vehicle type of the vehicle may be determined, and fuel consumption information corresponding to the determined vehicle type may be acquired. The vehicle type can be determined by acquiring vehicle type information representing the vehicle type from the vehicle information management device 200. The vehicle type information may be acquired by the receiving unit 11 or the operation unit 14 in the same manner as the fuel efficiency information.

  The display device 100 configured as described above performs the processing described below. In the display device 100, when a function for displaying a cruising range is activated by an operation of the operation unit 14 or the like, the processing unit 10 executes processing described below according to the procedure shown in FIG. The processing unit 10 executes the following processing at an appropriate timing (for example, periodically using a time measuring function) in order to appropriately display the cruising range of the vehicle accompanying movement. Here, the processing by the processing unit 10 may be performed by hardware or may be realized by software using a program.

  First, the processing unit 10 acquires various information used for processing to be described later (S11). Specifically, the processing unit 10 controls the receiving unit 11 to acquire position information indicating the current position of the vehicle and traffic congestion information indicating the traffic congestion situation around the vehicle, and controls the storage unit 12 to acquire map information. At the same time, the vehicle information management device 200 is requested to provide information, and the remaining amount information, fuel consumption information, and the like are acquired.

  Next, the processing unit 10 controls the storage unit 12 to determine whether or not prediction information is stored in the storage unit 12 (S12). In the case of the first processing, since the prediction information is not stored, the determination is NO. In the case of the second and subsequent processes, a YES determination is made. If it is determined in step S12 that the prediction information is not stored (NO), the processing unit 10 extracts a route starting from the current position of the vehicle from the road network of the map information, and the extracted route The terminal node is specified (S13).

  Next, the processing unit 10 calculates the cruising distance of the vehicle using the remaining amount information and the fuel consumption information (S14). At this time, the cruising range may be determined in consideration of items that affect the cruising range such as road gradient, number of passengers, and weather. Thus, by adjusting the cruising range according to each item, it is possible to calculate an accurate cruising range according to each item. Then, the processing unit 10 calculates the predicted remaining fuel amount at the identified node using the calculated cruising distance and road information, and relates the calculated predicted fuel remaining amount to the identified node. Is stored in the storage unit 12 (S15). At this time, the processing unit 10 determines the traffic condition of the extraction route based on the traffic information, and when it is determined that the traffic is in traffic, sets the traffic consumption according to the traffic level, and identifies the identified node and its traffic consumption. Predictive information is generated in association with the quantity.

  Here, an example of a route extraction procedure will be described with reference to FIG. The route is extracted by tracing the link L1 starting from the current position on the road network, and storing the predicted remaining fuel amount and traffic consumption at that time in the node N1, and the predicted cruising surplus value at that time is predetermined. If the value (in this embodiment, 10%) or more, the extraction target is extended to each link (link L2, L3, L4) connected to the node N1, and the subsequent nodes (nodes N2, N3, N4) This is done by repeating the same procedure.

  Thus, the extraction of the route is repeated until the predicted cruising surplus value becomes less than a predetermined value (10%) when the vehicle is considered to have traveled the route by the extracted road link. Accordingly, the cruising possible route of the vehicle having the predicted cruising surplus value equal to or greater than the predetermined value (10%) is formed in a network shape that spreads radially like a mesh around the current position. The predetermined value is set as appropriate and may be 0%. However, by setting the predetermined value to a value larger than 0%, an actual cruising distance of the vehicle can be given a margin.

  Based on the extraction of the cruising route, the processing unit 10 has the predicted cruising surplus value of the identified node equal to or greater than a predetermined value (10%) after storing the prediction information in step S15 as shown in FIG. It is determined whether or not (S16). If it is determined that the predicted cruising surplus value is equal to or greater than the predetermined value (10%) (YES in S16), the processing unit 10 determines whether all nodes that can be cruising routes have been selected (S17). ), If it is determined that all nodes have not been selected (NO), the process returns to step S13. If it is determined in step S16 that the predicted cruising surplus value is less than the predetermined value (10%) (NO) or if it is determined in step S17 that all nodes have been selected (YES), the processing unit 10 Generates cruising range information representing the cruising range set based on the predicted cruising surplus value of each node (S18). Specifically, as shown in FIG. 5, the processing unit 10 is formed by connecting nodes (N5, N7, N6,...) Whose predicted cruising reserve value is a predetermined value (10%) with a single stroke. The formed area is set as the cruising range.

  By the way, as shown in FIG. 4, when it is determined in step S12 that there is prediction information (YES), the processing unit 10 reads and acquires the prediction information from the storage unit 12, thereby obtaining each node in the previous process. Is obtained (calculated) (S20), and then it is determined whether or not the vehicle has moved from the time of the previous processing (the past time according to the present embodiment) to the current time (S21). . If it is determined that the vehicle is not moving (NO in S21), the processing unit 10 uses the fuel remaining value (actual fuel remaining amount) that is an actual measurement value at the time of the previous processing and the current time. Then, the rate of change of the remaining cruising power is calculated (S22). For example, if the vehicle is a gasoline car and the previous fuel remaining value was 10 liters (100%), but the current fuel remaining value was 9 liters, The rate of change is “−10%”. That is, 10% of the fuel is consumed in the idling state. Then, the processing unit 10 generates cruising range information representing the cruising range at the current time using the calculated change rate (S23). For example, when the cruising range is set by the cruising route shown in FIG. 5 at the time of the previous processing and the change rate of the cruising remaining power is “−10%”, FIG. As shown, the predicted cruising reserve value of each node is subtracted by 10%, and the predicted cruising reserve value at the current time point is calculated. Then, a newly formed formation region connecting the nodes (N2, N4, N3,...) Whose calculated predicted cruising surplus value is a predetermined value (10%) is defined as a cruising range at the current time point. The settable range information that represents the range that can be reached is generated.

  On the other hand, as shown in FIG. 4, when it is determined in step S21 that the vehicle has moved (YES), the processing unit 10 selects a predetermined node (for example, the node closest to the current position of the vehicle). Then, the rate of change of the cruising surplus power is calculated using the predicted cruising surplus power values at the time of the previous processing and the current time of the selected node (S24). For example, when the predicted remaining fuel amount at the time of the previous process is 30%, but the predicted fuel remaining amount at the current time point is 25%, the change rate of the remaining fuel amount is “− 5% ".

  Next, the processing unit 10 determines whether or not the calculated change rate is equal to or greater than a threshold (± 10% in the present embodiment) (S25), and is greater than or equal to the threshold (± 10%) (YES). If it is determined, the process proceeds to step S13, and a predicted cruising surplus value for a new cruising route is calculated. Thereby, even if it is a case where change rate is as large as a threshold value (10%) or more, a cruising range can be set appropriately. Although the flow is omitted here, if the rate of change is close to zero (for example, less than ± 5%), it is assumed that the change in the cruising range is small, and the cruising range at the time of the previous processing is left as it is. It is good also as the range which can be continued at the time. This greatly simplifies the processing. If it is determined in step S25 that the calculated rate of change is not equal to or greater than the threshold value (± 10%) (NO), the processing unit 10 mainly uses the vehicle front region as shown in FIG. A region within a range of a predetermined angle with respect to the moving direction (for example, ± 45 ° with respect to the traveling direction as shown) is set as the first cruising range (S26), and mainly the rear region of the vehicle A region outside the predetermined angle range with respect to the moving direction of the vehicle is set as the second cruising range (S27).

  Here, the first cruising range is set using the rate of change and the predicted cruising surplus value at the time of the previous process, as in the process in step S23 described above. Specifically, processing similar to the processing in step S23 is performed for the nodes within the predetermined angle range described above. On the other hand, the second cruising range is set by correcting the cruising range according to the change rate using the cruising range in the previous process. That is, as shown in FIG. 7, each end point T constituting the peripheral portion of the cruising range in the previous process is corrected according to the rate of change of the cruising remaining power (moving toward the current vehicle position (inward). The correction area formed by reducing the image is set as the second cruising range. The cruising range in the previous process can be obtained using the prediction information. Then, the cruising range information representing the cruising range (the first cruising range and the second cruising range) obtained by combining the first cruising range and the second cruising range is generated (S28).

  After generating the cruising range information in steps S18, S23, and S28, the processing unit 10 controls the display unit 13 to set the cruising range as illustrated in FIG. 8 based on the generated cruising range information. The displayed image is displayed on the display unit 13 (S19), and the process is terminated. In FIG. 8, the thinnest line (thin line) indicates a road that is not a cruising route, and the thicker line indicates that the route is a cruising route. The boundary of whether or not it is a cruising range (two-dot chain line) and the indication of whether or not it is a cruising route may be performed according to the color difference, not the line type such as the thickness of the line, This may be done for both line types and color differences. In addition, display division (for example, color division) may be performed in more detail according to the predicted cruising surplus value. Thereby, the user can easily grasp the relationship between the fuel consumption and the cruising range.

  According to the display device 100 as described above, the predicted cruising surplus value at the past time (the time of the previous processing) is used without newly obtaining the predicted cruising surplus value of each node at the current time from the beginning. Can be obtained. That is, when obtaining the cruising range, the processing can be simplified as compared with the case of newly obtaining all from the beginning, and the processing load for obtaining the cruising range can be reduced.

  Further, when setting the cruising range, the formation range formed based on the node whose predicted cruising surplus value is equal to or greater than the predetermined value (10%) becomes the cruising range, so that the cruising range should have a margin. Can do.

  Further, if it is determined in step S21 that the vehicle has not moved (NO), the rate of change obtained by the change in only the fuel remaining value, which is the actual measurement value, is set as the rate of change in the cruising reserve power. The rate of change of remaining power can be determined simply and easily, and the processing load can be further reduced.

  If it is determined in step S21 that the vehicle is moving (YES), the first cruising range is set using the predicted cruising surplus value at the current time, and the vehicle is moved. A correction region obtained by correcting the peripheral portion of the cruising range at a past time corresponding to outside the range of the predetermined angle with respect to the direction according to the rate of change of the cruising remaining power is set as the second cruising range, Since the cruising range information indicating the cruising range and the second cruising range is generated, the second cruising range can be obtained simply and easily, and the processing load can be further reduced.

  The present invention is not limited to the embodiments described above, and various modifications can be made. For example, the numerical values, units, and the like in the above-described embodiments are examples, and these can be set as appropriate.

  As described above, the cruising range display device, the cruising range display method, and the program according to the present invention can simplify the processing when determining the cruising range as compared with the conventional case, so that This has the effect of reducing the processing load when determining the cruising range, and is useful as a cruising range display device, a cruising range display method, and a program for displaying the cruising range of the vehicle.

DESCRIPTION OF SYMBOLS 10 Processing unit 11 Receiving part 12 Storage part 13 Display part 14 Operation part 100 Navigable range display apparatus 200 Vehicle information management apparatus

Claims (6)

A cruising range display device for displaying a cruising range of a vehicle,
Storage means for storing prediction information in which a plurality of nodes constituting a road network and predicted cruising surplus values at past times for each of the plurality of nodes are associated;
Reading the prediction information from the storage means to obtain a predicted cruising surplus power value at the past time point, calculating a rate of change of cruising surplus power from the past time point to the current time point, and calculating the change in the calculated cruising surplus power A predicted cruising surplus value at the current time of the node using the rate and a predicted cruising surplus value at the past time, and using the calculated predicted cruising surplus value at the current time Information processing means for generating cruising range information representing the cruising range at the time of
A cruising range display device comprising: display means for displaying the cruising range at the current time point based on the cruising range information generated by the information processing means.   The information processing means determines whether or not the vehicle is moving from the past time point to the current time point, and when it is determined that the vehicle is not moving, from the past time point of the vehicle. 2. The cruising range display device according to claim 1, wherein a rate of change in the remaining amount of actual fuel up to the current time point is used as a rate of change in the remaining cruising power. The cruising range has a first cruising range that is within a predetermined angle range with respect to the moving direction of the vehicle, and a second cruising range that is outside the predetermined angle range,
The information processing means determines whether or not the vehicle is moving from the past time point to the current time point. If it is determined that the vehicle is moving, the predicted continuation at the current time point is determined. The first cruising range is set using a surplus power value, and a peripheral portion of the cruising range at the past time point corresponding to outside the range of the predetermined angle is corrected according to a change rate of the cruising surplus power. The cruising range display according to claim 1 or 2, wherein a correction range is set as the second cruising range, and cruising range information representing the first cruising range and the second cruising range is generated. apparatus.   The cruising range display device according to any one of claims 1 to 3, wherein the information processing unit sets the formation range formed based on a node having the predicted cruising surplus value equal to or greater than a predetermined value as the cruising range. A cruising range display method for displaying a cruising range of a vehicle,
Obtaining prediction information in which a plurality of nodes constituting the road network and predicted cruising surplus values at each past time for each of the plurality of nodes are associated, and the cruising surplus power from the past time point to the current time point is acquired; Calculating the rate of change, calculating the predicted cruising reserve value at the current time of the node using the calculated rate of change of the cruising reserve and the predicted cruising reserve value at the past time point, and calculating the current An information generating step of generating cruising range information representing the cruising range at the current time point using the predicted cruising surplus value at the time point;
A cruising range display method comprising: a display step of displaying the cruising range at the current time point based on the cruising range information generated by the information generation step. A program that causes a computer to execute processing in a cruising range display device that displays a cruising range of a vehicle,
Obtaining prediction information in which a plurality of nodes constituting the road network and predicted cruising surplus values at each past time for each of the plurality of nodes are associated, and the cruising surplus power from the past time point to the current time point is acquired; Calculating the rate of change, calculating the predicted cruising reserve value at the current time of the node using the calculated rate of change of the cruising reserve and the predicted cruising reserve value at the past time point, and calculating the current An information generating step of generating cruising range information representing the cruising range at the current time point using the predicted cruising surplus value at the time point;
A program for causing a computer to execute a display control step of causing a display means to display a cruising range at the current time point based on the cruising range information generated by the information generation step.

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