Arrival time index calculation system and mobile body management system

Abstract

To provide an arrival time index calculation system and a mobile body management system which inexpensively and accurately support return of a lent movable body.SOLUTION: A system: sets a central position of stores s2, s2, s3 in a mesh F as a store representative point PS_F; sets the central position of rental cars c2, c3, c3 in a mesh A in which the store in the mesh F becomes a return destination as a vehicle representative point PC_A; and calculates a route R_A-F from the vehicle representative point to the store representative point, and expected arrival time of the store representative point when traveling the route by setting current time point as departure time (a). The system: calculates the route R_c3-s2 from a present position to the return destination store s2, and the expected arrival time of the store representative point when traveling the route by setting the current time point as the departure time, only about the rental car c3 in which a return deadline is the time before the time obtained by adding predetermined time to the expected arrival time of the route R_A-F, of the rental cars c1, c2, c3; and determines presence / absence of a risk of return delay on the basis of the expected arrival time (b).SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention mainly relates to a technique for assisting the return of a rented vehicle or other rented mobile object. [Background technology]

[0002] One known technology for assisting in the return of rental cars is one in which a navigation device installed in the rental car uses map data stored in the navigation device to search for a route to the return location and calculates the estimated time of arrival at the return location if the route is traveled, and if the estimated arrival time does not meet the return deadline, outputs a message to the rental car user urging them to extend the return deadline (for example, Patent Document 1).

[0003] Another known technology for assisting in the return of rental cars is one in which a rental car management server manages the location of each rental car by collecting the current location via communication from the rental car terminal installed in the rental car, calculates the required driving time for each rental car from the rental car's location to the return location of that rental car, and if the time obtained by subtracting the current time from the return deadline is insufficient compared to the required driving time, outputs a message to the rental car user informing them that the return deadline is approaching (for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-270960 A [Patent Document 2] JP 2004-295392 A Summary of the Invention [Problem to be solved by the invention]

[0005] According to the technology described above in which the navigation device installed in the rental car searches for a route to the return location and assists in returning the rental car, map data and a navigation device are required for each rental car. Moreover, the greater the number of rental cars, the greater the cost of installing navigation devices.

[0006] On the other hand, in the above-mentioned technology for supporting rental car returns in the rental car management server, in order to accurately calculate the required driving time for each rental car, it is necessary to use map data to search for a route from the rental car's location to the rental car's return location, and then calculate the required driving time for that route. In this case, however, a license fee for the map data is required according to the number of rental cars. And the more rental cars there are, the higher the cost of the license fee for this map data becomes. Also, the more rental cars there are, the greater the amount of processing required becomes.

[0007] Therefore, it is conceivable that the rental car management server could make a request to an external map service that provides a route and required driving time calculation service to obtain the required driving time to the return location for each rental car, but this would result in a usage fee for the map service depending on the number of requests, and the more rental cars there are, the higher the cost of using the map service would become.

[0008] Therefore, an object of the present invention is to support the return of rented mobile objects accurately and at a relatively low cost. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the present invention provides an arrival time index calculation system that calculates an index value of the arrival time of a plurality of moving bodies at a destination set for each of the moving bodies, the arrival time index calculation system comprising: a representative point setting means that sets a destination representative point in a first area including at least one destination, and sets a moving body representative point in a second area in which a plurality of moving bodies whose destinations within the first area are set are located; and an index value calculation means that calculates an estimated arrival time at the destination of a travel route searched for with the current time as the departure time, the moving body representative point as the departure point, and the destination representative point as the destination, as an index value of the arrival time at the destination of each moving body that is located in the second area and has a destination set in the first area.

[0010] Here, this arrival time index calculation system may be configured so that, in the representative point setting means, when the first area includes multiple destinations, the center of the multiple destinations is set as the destination representative point, and the center of multiple moving bodies located in the second area and having destinations within the first area set as the moving body representative point.

[0011] According to this type of arrival time index calculation system, by using route search only once, the approximate arrival time at the destination of each mobile body that has a destination set within the first area when the mobile body departs for the destination at the current time can be calculated as the arrival time index value. In order to achieve the above object, the present invention provides a mobile object management system that manages the return deadlines of rented mobile objects, and includes a management server that manages the location and return deadlines of each mobile object. The management server includes a screening means and a return delay risk determination means. A geographical area to be targeted is divided into zones, and a zone in which a store to which a mobile object is to be returned is located is defined as a store-containing zone. Each zone in which a mobile object is to be returned to a store located in the store-containing zone is defined as a mobile object-containing zone. The screening means sets a store representative point in the store-containing zone, and for each mobile object-containing zone, sets a mobile object representative point in the mobile object-containing zone, and acquires an estimated arrival time at the destination of a travel route searched for with the mobile object representative point set as the current time as the departure point and the store representative point in the store-containing zone as the destination. For each mobile object located in the mobile object-containing zone and with the store in the store-containing zone as the return destination, extracts a mobile object whose estimated arrival time has a time margin shorter than a predetermined level with respect to the return deadline of the mobile object. In addition, the return delay risk determination means obtains, for each mobile object extracted by the screening means, an estimated arrival time at the destination of the travel route searched for, with the current time as the departure time, the location of the mobile object as the starting point, and the store to which the mobile object is to be returned as the destination, and determines whether or not there is a risk of a return delay of the mobile object based on the amount of time margin that the obtained estimated arrival time has in relation to the return deadline of the mobile object.

[0012] Here, this mobile object management system may be provided with a mobile terminal mounted on each mobile object and capable of communicating with the management server, and the management server may be provided with an alert means for causing the mobile terminal of a mobile object that has been determined by the return delay risk determination means to have a risk of a return delay to alert the user to the occurrence of a return delay of the mobile object.

[0013] In the above mobile object management system, when a plurality of stores are located within the store-containing area, the screening means may set the center of the plurality of stores as the store representative point. Furthermore, in the above mobile object management system, in the screening means, for each mobile object-containing area, when multiple mobile objects whose return destination is a store in the store-containing area are located within the mobile object-containing area, the center of the positions of that number of mobile objects may be set to the mobile object representative point.

[0014] In the above mobile object management system, the screening means may set the center of the store-containing area to the store representative point. In the above mobile object management system, the screening means may set the center of each mobile object containing area to the mobile object representative point. Furthermore, in the above mobile object management system, the screening means may set, for each mobile object contained area, a store in that mobile object contained area or a store contained area that is farthest from a mobile object representative point set in that mobile object contained area as a store representative point to be used for that mobile object contained area, and for each mobile object contained area, obtain an estimated arrival time at the destination of the travel route searched for, with the current time as the departure point set as the mobile object representative point and the set store representative point to be used for that mobile object contained area as the destination.

[0015] In addition, in the above mobile object management system, the screening means sets, for each mobile object-containing area, the position among the positions of a plurality of mobile objects that have a store in the store-containing area as their return destination, which is the farthest from the store-containing area or from a store representative point set for the store-containing area, as the mobile object representative point.

[0016] In addition, the above-mentioned mobile object management system may, in the screening means, use a service provided by an external service server to search for a route and calculate an estimated arrival time for the searched route, to obtain an estimated arrival time for the destination of the travel route searched for, with the current time as the departure time, the mobile object representative point set as the starting point, and a store representative point in the store-containing area as the destination, and, in the return delay risk determination means, use the service provided by the external service server to obtain an estimated arrival time for the destination of the travel route searched for, with the current time as the departure time, the position of the mobile object as the starting point, and the store to which the mobile object is to be returned as the destination.

[0017] Furthermore, the screening means may define each of the zones into which the geographical range is divided, in which a store to which a mobile object is to be returned is located, as a store-containing zone, and for each store-containing zone, define an zone in which a mobile object whose return destination is a store located in that store-containing zone is located as a mobile object-containing zone that corresponds to the store-containing zone, and set a store representative point within the store-containing zone for each of the store-containing zones. For each of the store-containing zones, a mobile object representative point is set within the mobile object-containing zone for each mobile object-containing zone corresponding to the store-containing zone, and an estimated arrival time is obtained for the destination of the travel route searched for with the mobile object representative point set as the current time as the departure point and the store representative point of the store-containing zone corresponding to the mobile object-containing zone as the destination. For each mobile object located in the mobile object-containing zone and whose return destination is a store in the store-containing zone corresponding to the mobile object-containing zone, a mobile object whose estimated arrival time has a time margin of less than a predetermined level with respect to the return deadline of the mobile object is extracted.

[0018] According to the mobile object management system as described above, for each store-containing area where a mobile object is located and whose return destination is a store in the store-containing area, route search is used once to obtain an approximate arrival time for each mobile object whose return destination is a store in the store-containing area if the mobile object departs from the return destination store at the current time, and mobile objects whose approximate arrival time has a time margin for the return deadline that is shorter than a predetermined level are extracted. Then, route search is used for each of the extracted mobile objects to obtain an accurate estimated arrival time for the return destination store if the mobile object departs from the return destination store at the current time, and the presence or absence of a risk of a late return is determined.

[0019] Therefore, compared to using route search for each mobile object to determine whether or not there is a risk of a late return, the number of times route search is used is smaller, the processing volume is smaller, and the cost is lower, but the determination can be made with the same accuracy as when route search is used for each mobile object. Effect of the Invention

[0020] As described above, according to the present invention, it is possible to assist in the return of rented mobile objects at a relatively low cost and with high accuracy. [Brief description of the drawings]

[0021] [Figure 1] 1 is a block diagram showing a configuration of a vehicle management system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram showing a configuration of a vehicle terminal according to an embodiment of the present invention. [Diagram 3] 2 is a block diagram showing a configuration of a vehicle position information management server according to the embodiment of the present invention. FIG. [Figure 4] FIG. 13 is a diagram showing a mesh used in the return alert process according to the embodiment of the present invention. [Diagram 5] 5 is a flowchart showing a target vehicle mesh setting process according to the embodiment of the present invention. [Figure 6]1 is a flowchart showing a screening process according to an embodiment of the present invention. [Figure 7] 10 is a flowchart showing a detailed determination process according to the embodiment of the present invention. [Figure 8] FIG. 11 is a diagram illustrating a process example of a return alert process according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a configuration of a vehicle management system 100 according to an embodiment of the present invention. As shown in the figure, the vehicle management system 100 includes a vehicle terminal 1 installed in each rental vehicle, a store management terminal 2 installed in each store where the rental vehicle is rented or returned, and a vehicle position information management server 3. The vehicle terminal 1 and the vehicle position information management server 3, and the shop management terminal 2 and the vehicle position information management server 3 can communicate with each other via a WAN 4 that includes a mobile communication network and the Internet. In addition, the vehicle position information management server 3 can use the services of an external map service server 5 via the WAN 4. The map service server 5 provides map services such as providing map information, route search, and calculating estimated arrival times and required driving times. Next, the configuration of the vehicle terminal 1 is shown in FIG. The vehicle terminal 1 is a terminal that is fixedly installed in a rental car, or is a terminal that is rented out together with a rental car from each store and installed in the rental car. As shown in the figure, the vehicle terminal 1 is equipped with a GNSS receiver 11 that locates its position by satellite positioning, a mobile communication device 12 that performs mobile communications, a voice output device 13 that outputs voice messages, and a control unit 13 that controls each of the above components. The control unit 13 periodically transmits the measured position of the GNSS receiver 11 to the vehicle position information management server 3 via the WAN 4 by mobile communication using the mobile communication device 12. Furthermore, when the control unit 13 receives an instruction to output a return alert from the vehicle position information management server 3, it causes the audio output device 13 to output a voice message encouraging the user to return the rental car, such as "The time to return the rental car is approaching." A display device may be provided in the vehicle terminal 1, and when the control unit 13 receives an instruction to output a return alert, it may be configured to display on the display device a message calling the user's attention that the return time is approaching, instead of or in addition to outputting the voice message. Next, the configuration of the vehicle position information management server 3 is shown in FIG. As shown in the figure, the vehicle location information management server 3 includes a vehicle location management unit 31, a return alert processing unit 32, a store management unit 33, a vehicle rental status management unit 34, a vehicle status information providing unit 35, a Web API 36 that makes the store management unit 33, the vehicle rental status management unit 34 and the vehicle status information providing unit 35 available from the store management terminal 2 as a browser-based system, and a WAN interface 37 that provides communication functions for each unit via the WAN 4.

[0023] The vehicle position management unit 31 manages the current position of each rental car based on the measured position transmitted from the vehicle terminal 1 of each rental car. The return alert processing unit 32 detects rental cars that have a risk of late return, instructs the vehicle terminal 1 of the detected rental car to output a return alert, and performs return alert processing to register the occurrence of a risk of late return of the detected rental car in the vehicle rental status management unit 34. The store management unit 33 receives registration of information about each store, such as the name and location, from the store management terminal 2 and manages this information. The vehicle rental status management unit 34 receives settings for each rental car from the store management terminal 2, including the rental period including the return deadline, the return store, and whether or not the car will be returned, and manages whether or not each rental car is currently on loan, the rental period for each currently on loan, and the return store. In addition, the vehicle rental status management unit 34 manages, for each rental car, the status of the period overdue if the return deadline has passed, and the occurrence of a risk of late return registered by the return alert processing unit 32. Next, the vehicle status information providing unit 35 transmits to the store management terminal 2 a management screen displaying a list of the status of each rental car managed by the vehicle rental status management unit 34, and causes the store management terminal 2 to display it. In addition, in response to an operation of the store management terminal 2, the vehicle status information providing unit 35 transmits to the store management terminal 2 a map screen showing the current position of the specified rental car, which is managed by the vehicle position management unit 31, on a map, and causes the store management terminal 2 to display it.

[0024] In addition, when the occurrence of a risk of a late return is registered by the return alert processing unit 32, the vehicle condition information providing unit 35 causes the store management terminal 2 to output an alert of the occurrence of a risk of a late return of the rental car in a form that allows the rental car to be identified, such as in the form of a pop-up display. Next, the shop management terminal 2 is provided with a Web browser for using the vehicle position information management server 3 as a browser-based system. Hereinafter, the return alert process that is periodically performed by the return alert processor 32 of the vehicle position information management server 3 will be described. First, the mesh used in the return alert process will be described. Figure 4 shows an example of this mesh. As shown in the figure, a mesh is each square that divides the geographical range covered by the vehicle management system 100 into squares of a certain area (for example, 10 km x 10 km) in the longitude and latitude directions, and nine meshes, A to I, are shown in Figure 4. Each store and each rental car is located within one of the meshes, and in the example shown, stores s1, s2, and s3 are located within mesh F, and stores s4 and s5 are located within mesh G. In addition, rental cars c1, c2, c3, and c4 are located within mesh A, rental cars c5 and c6 are located within mesh C, and rental cars c7 and c8 are located within mesh H.

[0025] Here, in this figure, the return destination for rental cars c1, c3, c4, c7, and c8, shown in white, is one of stores s1, s2, or s3 within mesh F, the return destination for rental cars c2, c5, and c6, shown in black, is one of stores s4 or s5 within mesh G, and the return destination for rental car c3 is store s3 within mesh F.

[0026] The return alert process is carried out as follows, based on the location of each store managed by the store management unit 33, the location of each rental car managed by the vehicle location management unit 31, and the return store and return deadline of each rental car managed by the vehicle rental status management unit 34. That is, in the return alert process, each mesh in which a store exists is set as a target store mesh, and a target vehicle mesh setting process is performed for the target store mesh. In the case of Figure 4, the meshes in which stores exist are mesh F and mesh G, so a target vehicle mesh setting process is performed with mesh F as the target store mesh, and a target vehicle mesh setting process is performed with mesh G as the target store mesh. FIG. 5 shows the procedure for this target vehicle mesh setting process. As shown in the figure, in this target vehicle mesh setting process, the center coordinates of the positions of each store in the target store mesh are set as the store representative point (step 502). The center coordinates of each store position can be calculated as the average of the coordinates of each store position. Next, among the rental cars currently being rented out and for which a store within the target store mesh is the return destination, those for which a return alert output has not been instructed to be sent to the vehicle terminal 1 within a specified period are set as vehicles to be screened (step 504). For example, if the target store mesh is mesh F in Fig. 4 and no rental car has been instructed to output a return alert to the vehicle terminal 1 within a predetermined period, then rental cars c1, c3, c4, c7, and c8, which are returned to stores s1, s2, and s3 in mesh F, will be the vehicles to be screened. Also, as shown in Fig. 8a, the centers of stores s1, s2, and s3 are set as the store representative point PS_F.

[0027] Next, each mesh in which the screening target vehicle exists is set as a target vehicle mesh, and screening processing is performed for the target vehicle mesh (step 506). As described above, when the rental cars c1, c3, c4, c7, and c8 in Figure 4 are the vehicles to be screened, mesh A and mesh H in which the vehicles to be screened are located become the target vehicle meshes, and a screening process is performed with mesh A as the target vehicle mesh and a screening process is performed with mesh H as the target vehicle mesh, respectively.

[0028] Then, when the screening process has been completed for all the target vehicle meshes, the target vehicle mesh setting process ends. Next, the procedure of the screening process performed for each target vehicle mesh in step 506 of the target vehicle mesh setting process is shown in FIG. As shown in the figure, in the screening process, the center coordinates of the screening target vehicle position within the target vehicle mesh are set as a vehicle representative point (step 602). The center coordinates of the screening target vehicle position can be obtained as the average of the coordinates of the positions of each screening target vehicle.

[0029] Then, a route search request is issued to an external map service server 5 that provides the above-mentioned map service, with the vehicle representative point as the departure point, the store representative point as the destination, and the departure time as the current time, thereby obtaining the estimated arrival time for the route (step 604). 4 is the target store mesh, mesh A is the target vehicle mesh, and the screening target vehicles in mesh A are rental cars c1, c3, and c4, the centers of the rental cars c1, c3, and c4 are set to the vehicle representative point PC_A as shown in Fig. 8a. Then, in accordance with the request, the map service server 5 searches for a route R_A-F from the vehicle representative point PC_A to the store representative point PS_F of the target store mesh F, calculates an expected arrival time at the store representative point PS_F when driving from the vehicle representative point PC_A to the store representative point PS_F along the route R_A-F with the current time as the departure time, and provides this to the return alert processing unit 32.

[0030] Here, this estimated arrival time represents the approximate arrival time at each return destination store of rental cars c1, c3, and c4 if they depart for each return destination store at the current time, and therefore can be used as an index value of the arrival time. Therefore, once the estimated arrival time is acquired (step 604), it is checked whether there is any vehicle that is likely to be a late return among the screening target vehicles in the target vehicle mesh based on the estimated arrival time (step 606). Here, a screening target vehicle whose return deadline is earlier than the estimated arrival time + a predetermined time is considered to be a screening target vehicle that is likely to be a late return. The predetermined time is set to a time sufficient to travel diagonally across two meshes (for example, 30 minutes if the mesh size is 10 km x 10 km).

[0031] Then, if there is no vehicle that shows a probability of late return among the screening target vehicles within the target vehicle mesh, the screening process ends. On the other hand, if there are any screening target vehicles that indicate a possibility of late return, each of the screening target vehicles that indicate a possibility of late return is treated as a target vehicle, and detailed judgment processing is performed on each of the target vehicles (step 608). Therefore, for example, if the target store mesh in Figure 4 is mesh F and the target vehicle mesh is mesh A, and the screening target vehicles within mesh A that have a probability of late return are rental cars c1 and c3, a detailed judgment process is performed with rental car c1 as the target vehicle, and a detailed judgment process is performed with rental car c3 as the target vehicle.

[0032] Then, when the detailed determination process has been completed for all target vehicles, the screening process ends. Next, the procedure of the detailed determination process performed for each target vehicle in step 608 of the screening process is shown in FIG. As shown in the figure, a route search request is issued to an external map service server 5 that provides the above-mentioned map service, with the target vehicle as the departure point, the store where the target vehicle is to be returned as the destination, and the departure time as the current time, thereby obtaining the estimated arrival time for the route (step 702).

[0033] Here, for example, if the target vehicle is the rental car c3 in Figure 4 and the store to which the rental car c3 is to be returned is store s2, the map service server 5, in accordance with the request, searches for route R_c3-s2 from the position of the rental car c3 to store s2, as shown in Figure 8b, and calculates the estimated time of arrival at store s2 when driving from the position of the rental car c3 to store s2 along the route R_c3-s2, using the current time as the departure time, and provides this to the return alert processing unit 32.

[0034] Returning to Fig. 7, next, when the estimated arrival time is acquired (step 702), it is checked whether there is a risk of late return of the target vehicle (step 704). Here, it is assumed that there is a risk of late return if the return deadline of the target vehicle is before the estimated arrival time + margin time. The margin time is, for example, about 0 to 10 minutes.

[0035] Then, if there is no risk of late return of the target vehicle, the detailed judgment process is terminated. On the other hand, if there is a risk of a late return, the vehicle terminal 1 of the target vehicle is instructed to output a return alert (step 706). Also, the occurrence of a risk of a late return of the target vehicle is registered in the vehicle state information providing unit 35 (step 708), and the detailed determination process is terminated. Here, as described above, the vehicle terminal 1 that has been instructed to output a return alert outputs a voice message or display encouraging the return of the rental car, such as "The rental car return time is approaching," from the audio output device 13. In addition, the vehicle condition information providing unit 35, in which the occurrence of a risk of a late return has been registered, causes the store management terminal 2 to output an alert of the occurrence of a risk of a late return of the rental car in a form that allows the target vehicle, the rental car, to be identified, such as in the form of a pop-up display.

[0036] The embodiment of the present invention has been described above. The store representative point in the above embodiment may be the center of a target store mesh, or the vehicle representative point in the above embodiment may be the center of a target vehicle mesh. Furthermore, the vehicle representative point in the above embodiment may be the position of the vehicle to be screened that is located farthest from the store representative point or the target store mesh. In the above embodiment, the store representative point may be set for each screening process performed for each target vehicle mesh, rather than in the target vehicle mesh setting process. That is, for example, in each screening process, the vehicle representative point of the target vehicle mesh or the position of the store in the target store mesh that is located farthest from the target vehicle mesh may be set and used as the store representative point.

[0037] As described above, in this embodiment, for one mesh (target store mesh) in which stores are located, the map service is used once for each mesh (target vehicle mesh) in which rental cars are located, with a store in the target store mesh as the return destination store, to obtain the approximate arrival time at the return destination store of each rental car, which is returned to a store in the target store mesh, if the rental car departs from the return destination store at the current time, and to determine whether or not there is a possibility of a late return of each rental car. Then, for only those rental cars for which a possibility of a late return is present, the map service is used to obtain the estimated arrival time at the current time of departure at the return destination store with high accuracy, and to determine whether or not there is a risk of a late return.

[0038] Therefore, according to this embodiment, the risk of late return can be determined with the same accuracy as when a map service is used for each rental car, with less use of the map service, less processing volume, and lower cost than when a map service is used for each rental car to determine whether or not there is a risk of late return.

[0039] In the above embodiment, the estimated arrival time is obtained using a map service provided by the external map service server 5 in step 604 of the screening process in Fig. 6 and step 702 of the detailed determination process in Fig. 7, but this may be achieved by providing the vehicle location information management server 3 with a function for route search and calculating the estimated arrival time for the searched route, and having the vehicle location information management server 3 itself calculate the estimated arrival time. Even in this way, it is possible to obtain the effect of being able to determine the presence or absence of a risk of return delay with the same accuracy as when a route search is performed for each rental car, with less processing volume than when a route search is performed for each rental car and when a calculation of the estimated arrival time is performed for each rental car.

[0040] In addition, the above embodiments have been described as managing the location and return deadline of a rental car, and notifying the rental car user or manager of the occurrence of a risk of late return, but this embodiment can be similarly applied to cases where the location and return deadline of any mobile object that is rented and used, such as a shared car, rental bike, rental bicycle, or rented personal mobility, is managed, and the user or manager of the mobile object is notified of the occurrence of a risk of late return of the mobile object. [Explanation of symbols]

[0041] 1...vehicle terminal, 2...store management terminal, 3...vehicle position information management server, 4...WAN, 5...map service server, 11...GNSS receiver, 12...mobile communication device, 13...audio output device, 13...control unit, 31...vehicle position management unit, 32...return alert processing unit, 33...store management unit, 34...vehicle rental status management unit, 35...vehicle status information providing unit, 36...Web API, 37...WAN interface, 100...vehicle management system.

Claims

1. An arrival time index calculation system that calculates an index value of an arrival time of a plurality of moving bodies at a destination set for each of the moving bodies, comprising: a representative point setting means for setting a destination representative point within a first area including at least one destination, and setting a moving body representative point within a second area in which a plurality of moving bodies having destinations set within the first area are located; An arrival time index calculation system characterized by having an index value calculation means for calculating an estimated arrival time at a destination of a travel route searched for with the current time as the departure time, the moving body representative point as the starting point, and the destination representative point as the destination, as an index value of the arrival time at the destination of each moving body located within a second area and having a destination within a first area.

2. 2. The arrival time index calculation system according to claim 1, The arrival time index calculation system is characterized in that, when the first area includes multiple destinations, the representative point setting means sets the center of the multiple destinations as the destination representative point, and sets the center of multiple moving bodies located in the second area and having destinations within the first area as the moving body representative point.

3. A mobile object management system for managing a return deadline of a rented mobile object, A management server that manages the location and return deadline of each moving object is provided. The management server includes a screening means and a return delay risk determination means, A geographical area to be targeted is divided into zones in advance, and a zone in which a store to which the mobile object is to be returned is located is defined as a store-containing zone. A zone in which a mobile object to be returned to a store located in the store-containing zone is located is defined as a mobile object-containing zone. The screening means comprises: a store representative point is set within the store-containing area, and for each mobile object-containing area, a mobile object representative point is set within the mobile object-containing area, and an estimated arrival time is obtained for the destination of the travel route searched for, with the current time as the departure point and the set mobile object representative point as the destination, and a store representative point in the store-containing area as the destination; and for each mobile object located in the mobile object-containing area and having a store in the store-containing area as the return destination, a mobile object whose estimated arrival time has a time margin of less than a predetermined level with respect to the return deadline of the mobile object is extracted; The return delay risk determination means A mobile object management system characterized in that, for each mobile object extracted by the screening means, an estimated arrival time at the destination of the travel route searched for is obtained, with the current time as the departure time, the location of the mobile object as the starting point, and the store to which the mobile object is to be returned as the destination, and whether or not there is a risk of a delay in the return of the mobile object is determined based on the amount of time margin between the estimated arrival time and the return deadline of the mobile object.

4. 4. The mobile object management system according to claim 3, a mobile terminal mounted on each of the mobile objects and capable of communicating with the management server; The management server is characterized in that it has an alert means for causing the mobile terminal of a mobile object that the return delay risk determination means has determined to be at risk of a return delay to alert the user to the delay in returning the mobile object.

5. 4. The mobile object management system according to claim 3, A mobile object management system characterized in that, when a plurality of stores are located within the store-containing area, the screening means sets the center of the plurality of stores as the store representative point.

6. 4. The mobile object management system according to claim 3, A mobile object management system characterized in that, for each mobile object-containing area, when multiple mobile objects whose return destination is a store in the store-containing area are located within the mobile object-containing area, the screening means sets the center of the positions of the multiple mobile objects as the mobile object representative point.

7. 4. The mobile object management system according to claim 3, A mobile object management system characterized in that the screening means sets the center of the store-containing area to the store representative point.

8. 4. The mobile object management system according to claim 3, A mobile object management system characterized in that the screening means sets the center of each mobile object containing area as the mobile object representative point for each mobile object containing area.

9. 4. The mobile object management system according to claim 3, The screening means comprises: For each mobile object containing area, a store in the mobile object containing area or a store containing area farthest from the mobile object representative point set in the mobile object containing area is set as a store representative point to be used for the mobile object containing area; A mobile object management system characterized in that for each mobile object-containing area, the current time is set as the departure time, the mobile object representative point is set as the starting point, and the store representative point used for the mobile object-containing area is set as the destination, and an estimated arrival time is obtained for the destination of the travel route searched for.

10. 4. The mobile object management system according to claim 3, A mobile object management system characterized in that, for each mobile object-containing area, the screening means sets the mobile object representative point to the location among multiple mobile objects that have a store in the store-containing area as their return destination, that is the farthest from the store-containing area or from a store representative point set for the store-containing area.

11. 4. The mobile object management system according to claim 3, the screening means acquires an estimated arrival time at a destination of a travel route searched for, using a service provided by an external service server for searching for a route and calculating an estimated arrival time for the searched route, the travel route being searched for with the current time as the departure point set as the mobile object representative point and the store representative point in the store-containing area as the destination, The return delay risk assessment means is a mobile object management system characterized in that it uses the service provided by the external service server to obtain an estimated arrival time at the destination of the travel route searched for, with the current time as the departure time, the position of the mobile object as the starting point, and the store to which the mobile object is to be returned as the destination.

12. A mobile object management system according to claim 3, 4, 5, 6, 7, 8, 9, 10 or 11, The screening means comprises: Each of the zones into which the geographical range is divided and in which a store to which a mobile object is to be returned is located is defined as a store-containing zone, and for each store-containing zone, a zone in which a mobile object to be returned to a store located in the store-containing zone is located is defined as a mobile object-containing zone corresponding to the store-containing zone, A mobile object management system characterized in that for each of the store-containing areas, a store representative point is set within the store-containing area, and for each mobile object-containing area corresponding to the store-containing area, a mobile object representative point is set within the mobile object-containing area, and an estimated arrival time is obtained for the destination of a travel route searched for, with the current time as the departure point and the set mobile object representative point as the destination, and with a store representative point in the store-containing area corresponding to the mobile object-containing area as the destination, and for each mobile object located in the mobile object-containing area and having a store in the store-containing area corresponding to the mobile object-containing area as the return destination, the system extracts mobile objects whose estimated arrival time relative to the return deadline of the mobile object is shorter than a predetermined level.

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