JP5254905B2 - Car sharing system - Google Patents

Description

  The present invention relates to a car sharing system in which a plurality of users share a vehicle.

  Conventionally, as this type of car sharing system, for example, there is a system described in Patent Document 1. FIG. 11 shows an outline of the car sharing system described in Patent Document 1. As shown in FIG. 11, in this car sharing system, if the user connects to the management server using, for example, the Internet connection function of the mobile terminal 5 and reserves the rental of the vehicle 6, Key information that can be used is transmitted from the management server 7 to the portable terminal 5 via the communication network. Further, the management server 7 transmits the same key information as the key information transmitted to the mobile terminal 5 to the vehicle 6 via the communication network, more specifically, to the in-vehicle device 61 mounted on the vehicle 6. And the common key information transmitted from the management server 7 is memorize | stored in the portable terminal 5 and the vehicle-mounted apparatus 61, respectively, and various vehicle operation by a user is attained. That is, if the user who possesses the portable terminal 5 approaches the vehicle 6, wireless communication is performed between the in-vehicle device 61 and the portable terminal 5, and the key information stored in each through the wireless communication matches. It is determined whether or not. When it is determined that the stored key information matches, various vehicle controls such as unlocking the door lock of the vehicle 6 or permitting the start of the in-vehicle engine are executed. The As described above, the vehicle 6 is equipped with a so-called smart entry system that can perform various vehicle operations by simply holding the portable terminal 5 without requiring a user's manual operation.

  On the other hand, as a system for performing various vehicle operations through wireless communication between the mobile terminal 5 and the vehicle 6, as shown in FIG. 12, for example, an operation provided in the mobile terminal 8 in addition to the smart entry system described above. There is a so-called keyless entry system in which a door lock of the vehicle 9 can be locked and unlocked by a user pressing the button 81. As such a keyless entry system, for example, there is a system described in Patent Document 2. FIG. 13 is a sequence chart showing the operation of a conventional general keyless entry system including the keyless entry system described in Patent Document 2.

  As shown in FIG. 13, in the keyless entry system, when the pressing operation of the operation button 81 is detected by the mobile terminal 8 (step S50), the mobile terminal 8 is determined according to the number of times the operation button 81 is pressed. The value of the key side rolling counter RCk is incremented (step S51). In addition, after incrementing the value of the key-side rolling counter RCk, the mobile terminal 8 generates a lock / unlock signal including an instruction to lock / unlock the door, an identification code, and the rolling counter RCk (step S52). This is transmitted to the in-vehicle device 91 (step S53). On the other hand, when the in-vehicle device 91 mounted on the vehicle 9 receives this locking / unlocking signal (step S60), it first determines whether or not there is a transmission error through a parity check or the like (step S61). If it is determined through this step S61 that there is no transmission error (step S61: YES), the identification code stored in the built-in memory and the identification signal included in the locking / unlocking signal match each other. It is determined whether or not (step S62). If it is determined that the identification codes match each other (step S62: YES), the value of the key-side rolling counter included in the locking / unlocking signal is stored in the built-in memory. It is determined whether or not the value is larger than the value of the rolling counter (step S63). If it is determined that the value of the key side rolling counter is larger than the value of the vehicle side rolling counter (step S63: YES), the value of the current key side rolling counter is stored in the memory as the value of the vehicle side rolling counter. While storing (step S64), the door is locked and unlocked (step S65). When there is a transmission error (step S61: NO), when the identification codes do not match each other (step S62: NO), or when the value of the key side rolling counter is less than or equal to the value of the vehicle side rolling counter (Step S63: NO), the value of the vehicle-side rolling counter is not updated, and the vehicle door is not locked or unlocked.

  According to such a keyless entry system, even if a third party intercepts a locking / unlocking signal transmitted from the portable terminal 8 and a third party tries to lock / unlock the vehicle door using the intercepted locking / unlocking signal, the portable terminal Once the door is locked and unlocked by 8, the value of the key-side rolling counter included in the intercepted locking / unlocking signal becomes equal to or less than the value of the vehicle-side rolling counter. For this reason, since the locking and unlocking of the door lock based on the unauthorized interception of the locking and unlocking signal can be prevented, a high security level can be secured.

JP 2008-293235 A JP 2001-27063 A

  By the way, when the vehicle 9 equipped with the keyless entry system is used as a rental vehicle of the car sharing system described above, it is conceivable to use the identification code or the rolling counter as the key information of the car sharing system. However, when the rolling counter is used as the key information of the car sharing system as described above, the following problems cannot be ignored.

  First, as shown in FIG. 14, as an initial state, a vehicle-side rolling counter RCc indicated by a value of “AAAA” in hexadecimal is stored in the in-vehicle device, and a key-side rolling counter RCk having the same value is managed by the key-side rolling counter RCk. Assume that it is stored in the server 7. At this time, if the user A who has the portable terminal 5a reserves the rental of the vehicle, the key side rolling counter RCk is notified from the management server 7 to the portable terminal 5a, and this rolling counter is stored in the portable terminal 5a. The Thereafter, when the user A uses the mobile terminal 5a to lock and unlock the door multiple times during the vehicle usage period, the values of the vehicle side rolling counter RCc and the key side rolling counter RCk change to “AABB”. If the user A's usage period ends, the user A's usage state in FIG. Thereafter, if the user B who is the next user reserves the rental of the vehicle, the key-side rolling counter RCk indicated by the value “AAAA” is transmitted from the management server 7 to the portable terminal 5b of the user B. However, in this case, since the value of the key side rolling counter RCk stored in the mobile terminal 5b is smaller than the value of the vehicle side rolling counter RCc, the user B uses the mobile terminal 5b to lock and unlock the door. Will not be able to. This is because the management server 7 cannot grasp the value of the key-side rolling counter corresponding to the value of the vehicle-side rolling counter, even though the vehicle-side rolling counter is updated every time the user locks and unlocks the vehicle. Due to that.

  As described above, in the car sharing system, when a vehicle equipped with a keyless entry system is used as a rental vehicle, there is a possibility that a situation in which the door lock cannot be locked or unlocked may occur. It is something that leaves room.

  The present invention has been made in view of such circumstances, and the purpose thereof is to appropriately perform locking and unlocking of a door lock using a portable terminal, even when a vehicle equipped with a keyless entry system is used. It is to provide a car sharing system that can be used.

  In order to solve the above-mentioned problem, the invention according to claim 1 has an operation button operated when locking and unlocking the door lock of the vehicle, and is stored in the operation button when the operation button is operated. Update the value of the key-side rolling counter, generate a locking / unlocking signal including the key-side rolling counter, and wirelessly transmit the locking / unlocking signal, and are mounted on the vehicle and receive the locking / unlocking signal Comparing the key-side rolling counter included in the locking / unlocking signal with the value of the vehicle-side rolling counter stored in itself, updating the value of the vehicle-side rolling counter based on the comparison result, and An in-vehicle device that locks and unlocks the door lock, and manages the use status of the vehicle, and can perform wireless communication with the mobile terminal, and the use of the vehicle starts. Until the mobile terminal is notified of the value of the key-side rolling counter stored in the mobile terminal through the wireless communication and is stored in the mobile terminal after the use of the vehicle is completed. The present invention includes a management server that acquires and stores the value of the key-side rolling counter through the wireless communication.

  According to the same configuration, when the user ends the use of the vehicle, the value of the key-side rolling counter stored in the user's mobile terminal is acquired by the management server, and thus corresponds to the value of the vehicle-side rolling counter. The management server can grasp the value of the key-side rolling counter. Then, when the next user uses the vehicle following this user, the value of the key-side rolling counter stored in the management server is notified to the next user's portable terminal. The stored value of the key side rolling counter can be stored in the mobile terminal of the next user. That is, even if the user who uses the vehicle is switched, the value of the key-side rolling counter corresponding to the value of the vehicle-side rolling counter can be taken over between the portable terminals that each user has. The used door lock can be properly locked and unlocked.

  According to a second aspect of the present invention, in the car sharing system according to the first aspect, when the management server acquires the value of the key side rolling counter stored in the mobile terminal, the key side rolling A command to erase the counter value is notified to the portable terminal through the wireless communication, and the portable terminal erases the value of the key-side rolling counter stored in itself based on the notification of the command. The gist is to do.

  According to the same configuration, when a command to delete the value of the key side rolling counter is notified from the management server to the mobile terminal, the value of the key side rolling counter stored in the mobile terminal is deleted. After the use of the vehicle ends, it becomes possible to prevent an illegal act such as intercepting the value of the key side rolling counter stored in the portable terminal. For this reason, since it is possible to prevent unauthorized acts by a third party such as locking and unlocking the door lock using the intercepted value of the key side rolling counter, the security level can be increased.

  A third aspect of the present invention is the car sharing system according to the first or second aspect, wherein the portable terminal has a function capable of connecting to the Internet, and the management server Using the Internet connection function of the terminal, the value of the key side rolling counter is notified to the portable terminal, and the value of the key side rolling counter stored in the portable terminal is acquired. There is a summary.

  According to the configuration, the management server notifies the mobile terminal of the value of the rolling counter using the Internet connection function of the mobile terminal without newly providing a communication line between the mobile terminal and the management server, or The value of the rolling counter can be acquired from the portable terminal. For this reason, installation of the car sharing system according to claims 1 and 2 is facilitated.

  According to the car sharing system of the present invention, even when a vehicle equipped with a keyless entry system is used, the door lock can be appropriately locked and unlocked using the portable terminal.

The figure which shows typically the outline | summary about one Embodiment of the car sharing system concerning this invention. The top view which shows typically the outline | summary of the smart entry system and keyless entry system mounted in a vehicle about the car sharing system of the embodiment. The block diagram which shows the system structure about the car sharing system of the embodiment. The figure which shows typically the content memorize | stored in the memory about the portable terminal of the car sharing system of the embodiment. (A), (b) is a figure which shows typically the information memorize | stored in the database of the management apparatus about the car sharing system of the embodiment. The flowchart which shows the process sequence about the reservation reception process by the car sharing system of the embodiment. The flowchart which shows the process sequence about the reservation application process by the car sharing system of the embodiment. The flowchart which shows the process sequence about the return reception process by the car sharing system of the embodiment. The flowchart which shows the process sequence about the return application process by the car sharing system of the embodiment. The figure which shows typically transition of the vehicle side rolling counter and the key side rolling counter when the user A and the user B use a vehicle about the car sharing system of the embodiment. The figure which shows the outline | summary of the conventional car sharing system typically. The top view which shows typically the outline | summary of the conventional keyless entry system. The sequence chart which shows the operation example of the portable terminal and vehicle about the conventional keyless entry system. The figure which shows typically transition of the vehicle side rolling counter and the key side rolling counter when the user A and the user B use a vehicle about the conventional car sharing system.

  Hereinafter, an embodiment of a car sharing system according to the present invention will be described with reference to FIGS. First, with reference to FIG.1 and FIG.2, the outline | summary of the car sharing system concerning this embodiment is demonstrated.

  As shown in FIG. 1, in this car sharing system, a group is formed by a plurality of users A to D, and vehicles 2 shared by these users A to D are parked in a parking lot. Has been. Further, in this system, the users A to D possess the mobile terminals 1a to 1d, respectively, and connect to the management server 3 using the Internet connection function installed in the mobile terminals 1a to 1d. It is possible to make a reservation for rental. In this system, for example, when the user A reserves the rental of the vehicle 2 through the portable terminal 1 a, information necessary for using the vehicle 2 is notified from the management server 3 to the portable terminal 1 a via the communication network 4. Is done. Incidentally, the information necessary for using the vehicle 2 includes a vehicle identification code IDc unique to the vehicle 2, a key identification code IDk necessary for authenticating the portable terminal 1a, the communication algorithm AL, and the key side rolling counter. RCk and the like are included. Here, the communication algorithm AL indicates information necessary for wireless communication with the in-vehicle device 20, for example, a modulation / demodulation method or a bit format. And the information notified from the management server 3 is memorize | stored in the portable terminal 1a in this way, The utilization of the vehicle 2 by the user A is attained.

  That is, as shown in FIG. 2, when the user A who has the portable terminal 1 a operates the operation button 11 provided on the portable terminal 1 a in a state where the user A is positioned around the vehicle 2, A locking / unlocking signal is transmitted to 20, so that the door lock of the vehicle can be locked or unlocked. On the other hand, if the user A who has the portable terminal 1a enters the outside communication area A1 set around the vehicle 2, a request signal and a response are transmitted between the in-vehicle device 20 mounted on the vehicle 2 and the portable terminal 1a. Signals are exchanged, and the in-vehicle device 20 authenticates the portable terminal 1a. And the door lock of the vehicle 2 is unlocked on the condition that authentication of the portable terminal 1a is materialized. Further, when the user A carrying the portable terminal 1a enters the in-vehicle communication area A2 set in the passenger compartment, the request signal and the response signal are exchanged between the in-vehicle device 20 and the portable terminal 1a. Also at this time, authentication of the portable terminal 1a by the in-vehicle device 20 is performed. Then, when the user presses the engine switch 21 installed in the vicinity of the steering device T in a state where the authentication of the mobile terminal 1a is established, the engine is started. Thus, the vehicle 2 is equipped with both the smart entry system and the keyless entry system described above.

  FIG. 3 is a block diagram showing the system configuration of such a car sharing system. Next, the configuration and operation of the system will be described more specifically with reference to FIG. Since the mobile terminals 1a to 1d have the same structure, only the configuration of the mobile terminal 1a is illustrated in FIG. 3 for convenience, and the configurations of the other mobile terminals 1b to 1d are illustrated in FIG. The illustration is omitted because it is the same as the configuration.

  As shown in FIG. 3, the in-vehicle device 20 receives a response signal and an unlocking signal transmitted from the portable terminal 1a together with a transmission unit 22 for transmitting the request signal to the communication areas A1 and A2. A receiving unit 23 is provided. And the transmission control of the request signal by the transmission part 22 and the processing of the response signal and the locking / unlocking signal received through the reception part 23 are performed collectively through the communication control part 24 similarly provided in the vehicle-mounted device 20. Incidentally, the communication control unit 24 includes a non-volatile memory 24a, in which the vehicle identification code IDc and the key identification code IDk used for authentication of the portable terminal 1a are stored. A vehicle-side rolling counter RCc is also stored. The in-vehicle device 20 is also provided with a door lock motor 25 for locking and unlocking the door lock, and an engine control unit 26 that performs overall control of the engine. The vehicle control is performed by executing various vehicle controls such as locking / unlocking the door lock by driving the door lock motor 25 or starting the engine through the engine control unit 26 when the pressing operation of the engine switch 21 is detected. It is executed in an integrated manner through the section 27. Incidentally, the communication between the communication control unit 24 and the vehicle control unit 27 and the communication between the vehicle control unit 27 and the engine control unit 26 are performed using CAN (Controller Area Network) communication or the like. Has been done.

  On the other hand, the mobile terminal 1 a receives a request signal transmitted from the in-vehicle device 20, transmits a response signal based on the reception of the request signal, or locks / unlocks based on the operation of the operation button 11. A transmission / reception unit 12 for transmitting a signal is provided. In addition, the mobile terminal 1a is provided with a microphone 13, a speaker 14, and a display unit 15 such as a liquid crystal display that are used for a telephone function, an Internet connection function, and the like. The operation button 11 provided on the portable terminal 1a is a part that is pressed by the user when inputting a telephone number, various operations for connecting to the Internet, and locking and unlocking the vehicle door. Function. And the process of the audio | voice information input from the microphone 13 and the detection of the press operation of the operation button 11 are performed through the control part 16 similarly provided in the portable terminal 1a. Incidentally, the control unit 16 is also a part that controls the speaker 14 and the display unit 15. The control unit 16 can communicate with the management server 3 from the transmission / reception unit 12 via the communication network 4 via the Internet. Further, the control unit 16 includes a non-volatile memory (here, flash PROM) 16a, and information communicated from the management server is stored in the memory 16a. Specifically, as shown in FIG. 4, a key side rolling counter RCk is stored in the first storage area R1 in which the memory 16a can be read and written, and writing is possible. In the second storage area R2 accessible only by 1a, the vehicle identification code IDc, the key identification code IDk, and the communication algorithm AL are stored. The control unit 16 performs the above-described request signal processing, transmission control of response signals and locking / unlocking signals, and the like according to the communication algorithm AL stored in the memory 16a.

  On the other hand, as shown in FIG. 3, the management server 3 is provided with a network communication unit 31 for performing Internet communication with the mobile terminal 1 a via the communication network 4 and a database 32. . Incidentally, as shown in FIGS. 5 (a) and 5 (b), the database 32 stores the usage date, usage time, and usage status of the vehicle 2 as well as the vehicle identification code IDc, key, and the like. An identification code IDk, a key-side rolling counter RCk, and a communication algorithm AL are stored. The communication control of the network communication unit 31 and the writing and reading of data to and from the database 32 are performed through the control unit 33 that is also provided in the management server 3.

  In this car sharing system, if the user operates the operation button 11 of the portable terminal 1a as necessary to lock and unlock the door, the portable terminal is operated in the same manner as the sequence chart illustrated in FIG. 1a and the vehicle-mounted apparatus 20 operate | move. That is, the control part 16 of the portable terminal 1a will increment the value of the key side rolling counter RCk, if operation of the operation button 11 is detected. Further, the control unit 16 generates a locking / unlocking signal including the key identification code IDk and the key-side rolling counter RCk, and transmits the generated locking / unlocking signal to the in-vehicle device 20 via the transmission / reception unit 12. When the receiving unit 23 of the in-vehicle device 20 receives the locking / unlocking signal, the receiving / locking signal is transmitted to the communication control unit 24. As a result, the communication control unit 24 collates the key identification code IDk included in the locking / unlocking signal with the key identification code IDk stored in the memory 24a. Determine whether or not. When it is determined that the mutual identification codes match, the value of the key-side rolling counter RCk is compared with the value of the vehicle-side rolling counter RCc stored in the memory 24a. If it is determined that the value is larger than the value of the vehicle-side rolling counter RCc, a command to lock and unlock the door is notified to the vehicle control unit 27. Then, when a command for locking and unlocking the door is notified, the vehicle control unit 27 performs locking and unlocking of the door by driving the door lock motor 25.

  By the way, the user A uses the Internet connection function of the portable terminal 1a to access the reservation page of the management server 3, specifically the date and time for using the vehicle 2, the page for inputting the user, etc. 2 loan reservations can be made. In addition, the user A can perform a return procedure of the vehicle 2 by accessing the return page of the management server 3 from the mobile terminal 1a.

  Next, referring to FIG. 6 and FIG. 7, when the user A accesses the reservation page of the management server 3 from the portable terminal 1 a and makes a rental reservation for the vehicle 2, the control is performed through the control unit 33 of the management server 3. The reservation acceptance process that is performed and the reservation application process that is executed through the control unit 16 of the mobile terminal 1a will be described.

  Here, FIG. 6 shows a processing procedure of the reservation acceptance process executed through the control unit 33 of the management server 3 as a flowchart. First, a specific procedure of the process will be described with reference to FIG. explain. The process shown in FIG. 6 is executed when the reservation page of the management server 3 is accessed from the portable terminal 1a.

  As shown in FIG. 6, in this reservation receiving process, first, the reservation page information necessary for displaying the reservation page on the display unit 15 is notified to the portable terminal 1a (step S10), and the reservation page information is input to the reservation page. It is determined whether or not the notified information is notified from the portable terminal 1a (step S11). And when it is judged that the information input into the reservation page was notified from the portable terminal 1a (step S11: YES), whether or not the vehicle 2 can be lent based on the input information. Is determined (step S12). Specifically, when there is no reservation at the input rental date and time, it is determined that the vehicle 2 can be lent out. If it is determined that the vehicle 2 cannot be lent (step S12: NO), the reservation page information is notified again to the portable terminal 1a (step S10), and the user is prompted to change the rent date and time.

  On the other hand, when it is determined that the vehicle 2 can be lent (step S12: YES), the information input on the reservation page is stored in the database 32 (step S13). Following the processing of step S13, the vehicle identification code IDc, the key identification code IDk, the key side rolling counter RCk, and the communication algorithm AL are read from the database 32 (step S14), and the read data is converted into key information. Is notified to the portable terminal 1a, and the control unit 33 ends the series of processes.

  FIG. 7 is a flowchart showing the procedure of the reservation application process executed through the control unit 16 of the portable terminal 1a. Next, referring to FIG. 7, the specific procedure of the process is shown. explain. 7 is executed when the reserved page information is transmitted from the management server 3. This process is also executed in the same manner in the portable terminals 1b to 1d.

  As shown in FIG. 7, in this reservation application process, first, the reservation page is displayed on the display unit 15 based on the reservation page information (step S20), and whether the user A has completed the input to the reservation page. It is determined whether or not (step S21). Specifically, for example, after the user A inputs the user and the usage time on the reservation page, when the part displayed as “reservation complete” on the reservation page is operated by the user, the input to the reservation page is not performed. It is determined that it has been completed. When it is determined that the user has completed the input to the reservation page (step S21: YES), the input information is notified to the management server 3 (step S22). Thereafter, it is determined whether or not the reservation page information is notified again (step S23). When the reservation page information is notified again (step S23: YES), the reservation page is displayed again on the display unit 15. (Step S20), the user is prompted to change the lending date and time. On the other hand, if the key information is notified from the management server 3 (step S24: YES) without the reservation page information being notified again (step S23: NO), the notified key information is stored in the memory 16a. (Step S25), this series of processes is terminated once.

  Next, referring to FIG. 8 and FIG. 9, when the user A accesses the return page of the management server 3 from the portable terminal 1 a and performs the return procedure of the vehicle 2, the return reception executed through the management server 3 A process and the return application process performed through the control part 16 of the portable terminal 1a are each demonstrated.

  Here, FIG. 8 is a flowchart showing the processing procedure of the return acceptance process executed through the control unit 33 of the management server 3. Next, referring to FIG. 8, a specific procedure of the processing is shown. Will be explained. 8 is executed when the return page of the management server 3 is accessed from the mobile terminal 1a.

  As shown in FIG. 8, in this return acceptance process, first, return page information necessary for displaying the return page on the display unit 15 is notified to the portable terminal 1a (step S30), and a return application is made. It is determined whether or not the mobile terminal 1a has been notified of the fact (step S31). When the mobile terminal 1a notifies that the return application has been made (step S31: YES), the memory 16a of the mobile terminal 1a is accessed to acquire the value of the key-side rolling counter RCk (step S31). S32) The value of the acquired key side rolling counter RCk is stored in the database 32 (step S33). Then, following the process of step S33, a key information deletion command is notified to the portable terminal 1a (step S34), and the control unit 33 ends the series of processes.

  FIG. 9 is a flowchart showing the processing procedure of the return application process executed through the control unit 16 of the portable terminal 1a. Next, with reference to FIG. explain. The process shown in FIG. 9 is executed when return page information is transmitted from the management server 3. This process is also executed in the same manner in the portable terminals 1b to 1d.

  As shown in FIG. 9, in this return application process, first, a return page is displayed on the display unit 15 based on the return page information (step S40), and it is determined whether or not a return application has been made by the user. (Step S41). Specifically, for example, when the part displayed as “return application” on the return page is operated by the user, it is determined that the user has made a return application. If it is determined that a return application has been made by the user (step S41: YES), the management server 3 is notified that the return application has been made (step S42), and a key is sent from the management server 3. It is determined whether or not an information erasure command has been notified (step S43). Subsequently, when it is determined that the key information deletion command is notified from the management server 3 (step S43: YES), the key information stored in the memory 16a, that is, the vehicle identification code IDc, the key identification code IDk. Then, the key-side rolling counter RCk and the communication algorithm AL are deleted (step S44), and the control unit 16 ends this series of processing.

  FIG. 10 shows an example of the operation of the car sharing system based on these processes. In the situation where the user A uses the vehicle 2 and the user B uses the vehicle 2, the vehicle-side rolling counter RCc and the key-side rolling counter RCk It shows the transition of values. Here, as an initial state, a vehicle-side rolling counter RCc indicated by a value of “AAAA” in hexadecimal is stored in the in-vehicle device 20 (more specifically, the memory 23a), and a key-side rolling consisting of the same value. Assume that the counter RCk is stored in the management server 3 (more specifically, the database 32).

  As shown in FIG. 10, if the user A who has the portable terminal 1a reserves the rental of the vehicle, the key-side rolling counter RCk is notified from the management server 3 to the portable terminal 1a, and the rolling counter RCk Is stored in the portable terminal 1a. After that, when the user A performs locking and unlocking of the door lock a plurality of times using the portable terminal 1a during the vehicle usage period, the values of the vehicle side rolling counter RCc and the key side rolling counter RCk change to “AABB”. Then, if user A makes a return application, the user A is in a state at the end of use in the figure. That is, the value of the key side rolling counter RCk corresponding to the value of the vehicle side rolling counter RCc is stored in the management server. For this reason, if user B who is the next user reserves rental of the vehicle, the mobile terminal 1b of user B stores the key-side rolling counter RCk indicated by the value “AABB”. The value of the side rolling counter RCc and the value of the key side rolling counter RCk can be made to coincide with each other. Thus, in the car sharing system according to the present embodiment, even if the user using the vehicle is switched, the value of the key-side rolling counter corresponding to the value of the vehicle-side rolling counter is transferred from the portable terminal 1a to the portable terminal 1b. Therefore, the user B can appropriately lock and unlock the door lock using the portable terminal 1b.

  In the present embodiment, for example, when a return application for the vehicle 2 is made, key information such as the vehicle identification code IDc and the key-side rolling counter RCk stored in the portable terminal 1a is erased. Eavesdropping of key information by a person can be prevented accurately. For this reason, it is possible to prevent unauthorized actions such as unlocking and unlocking door locks by unauthorized use of key information by third parties or starting on-vehicle engines, thus increasing the security level. You can also do it.

As described above, according to the car sharing system according to the present embodiment, the following effects can be obtained.
(1) When a rental reservation for the vehicle 2 is made, the key-side rolling counter RCk is read from the database 32 of the management server 3 and notified to the portable terminals 1a to 1d, and a return application for the vehicle 2 is made. The value of the key-side rolling counter RCk stored in the portable terminals 1a to 1d is stored in the database 32 of the management server 3. As a result, the management server 3 can grasp the value of the key-side rolling counter RCk corresponding to the value of the vehicle-side rolling counter RCc, and the value of the key-side rolling counter RCk can be determined for each portable terminal 1a-1d Will be able to take over between. For this reason, it becomes possible to appropriately lock and unlock the door lock using the mobile terminals 1a to 1d.

  (2) When a return application for the vehicle 2 is made, the management server 3 notifies the mobile terminal 1a of a key information deletion command, and deletes the key information stored in the mobile terminal 1a based on the notification. I did it. Thereby, since interception of the key information by a third party can be prevented accurately, the security level can be increased.

  (3) Communication is performed between the mobile terminals 1a to 1d and the management server 3 using the Internet connection function installed in the mobile terminals 1a to 1d. Thereby, since it is not necessary to newly provide a communication line between the portable terminals 1a to 1d and the management server 3, it is easy to install the car sharing system.

  (4) The key information is notified to the portable terminals 1a to 1d when the vehicle rental reservation by the users A to D is completed. Thereby, since the users A to D can use the vehicle immediately after completing the lending reservation, the convenience of the users A to D is improved.

In addition, the said embodiment can also be implemented with the following forms which changed this suitably.
In the above embodiment, when the rental reservation of the vehicle 2 by the users A to D is completed, the key information is notified to the portable terminal 1a. However, the timing when the key information is notified to the portable terminals 1a to 1d is described. If it is a period until the users A to D actually start using the vehicle 2, it can be changed as appropriate.

  In the above embodiment, the key information stored in the mobile terminals 1a to 1d is deleted when the return application is made by the users A to D, but the keys stored in the mobile terminals 1a to 1d are deleted. About the time which erases information, if user AD is after the time of applying for a return, it can change suitably. However, from the viewpoint of security, it is desirable to delete the key information stored in the mobile terminals 1a to 1d when the return application is made by the users A to D.

  -In above-mentioned embodiment, although portable terminal 1a-1d was a versatile thing which has a telephone function etc., it replaces with this, for example, is a thing for exclusive use used only for performing various operations of vehicles, for example. There may be. Further, when such a dedicated portable terminal is used, there is a possibility that the Internet connection function is not installed in the portable terminal. In that case, it is effective to newly provide a communication line between the portable terminal and the management server 3.

  In the above embodiment, the car sharing system according to the present invention is applied to the vehicle 2 equipped with both the keyless entry system and the smart entry system, but instead, for example, only the keyless entry system is installed. It can also be applied to a vehicle. Incidentally, when the car sharing system according to the present invention is applied to a vehicle equipped with only a keyless entry system, it is necessary to appropriately change the contents of the key information.

In the above embodiment, the door lock is unlocked and unlocked on the condition that the value of the key side rolling counter is larger than the value of the vehicle side rolling counter. Instead, for example, the key side rolling counter The door lock may be locked / unlocked on condition that the value and the value of the vehicle-side rolling counter match each other. The point is that the door lock may be locked and unlocked based on the comparison between the value of the vehicle-side rolling counter and the value of the key-side rolling counter.
(Appendix)
Next, a technical idea that can be grasped from the above embodiment and its modifications will be additionally described.

  (A) In the car sharing system according to claim 2, the management server obtains the key side rolling counter from the portable terminal and instructs the portable terminal to erase the value of the key side rolling counter. The car sharing system is characterized in that notification to the vehicle is made when the use of the vehicle ends. According to this configuration, the value of the key-side rolling counter stored in the mobile terminal can be erased when the user finishes using the vehicle. Will be able to prevent. For this reason, the security level can be further increased.

  (B) In the car sharing system according to any one of claims 1 to 3 and appendix i, the management server is stored in the vehicle on the condition that reservation for use of the vehicle is made. The car sharing system is characterized in that the key side rolling counter is notified to the portable terminal. According to this configuration, when the user reserves the use of the vehicle, the value of the rolling counter is notified to the user's mobile terminal, so that the user can use the vehicle immediately after completing the reservation. . For this reason, a user's convenience comes to improve.

  RCc: vehicle side rolling counter, RCk: key side rolling counter, 1a to 1d, 5, 5a, 5b, 8 ... mobile terminal, 2, 6, 9 ... vehicle, 3, 7 ... management server, 4 ... communication network, 11 , 81 ... operation buttons, 12 ... transmission / reception part, 13 ... microphone, 14 ... speaker, 15 ... display part, 16, 33 ... control part, 16a ... memory, 20, 61, 91 ... in-vehicle device, 21 ... engine switch, 22 DESCRIPTION OF SYMBOLS ... Transmission part, 23 ... Reception part, 24 ... Communication control part, 24a ... Memory, 25 ... Door lock motor, 26 ... Engine control part, 27 ... Vehicle control part, 31 ... Network communication part, 32 ... Database.

Claims (3)

An operation button that is operated when unlocking and unlocking the door of the vehicle is updated, and the value of the key-side rolling counter stored therein is updated as the operation button is operated, and the key-side rolling counter is updated. A mobile terminal that generates a lock / unlock signal including
A comparison is made between the key-side rolling counter included in the locking / unlocking signal and the value of the vehicle-side rolling counter stored in the vehicle and the vehicle-side rolling counter stored in the vehicle when the locking / unlocking signal is received. An in-vehicle device for updating the value of the vehicle-side rolling counter based on the above, and for locking and unlocking the door lock;
While managing the usage status of the vehicle, it is possible to perform wireless communication with the mobile terminal, and the key-side rolling counter stored in itself can be stored in the period until the usage of the vehicle is started. Management of notifying the mobile terminal of the value through the wireless communication and acquiring and storing the value of the key-side rolling counter stored in the mobile terminal after the use of the vehicle is completed through the wireless communication Server,
Car sharing system with When the management server acquires the value of the key side rolling counter stored in the mobile terminal, the management server notifies the mobile terminal of an instruction to delete the value of the key side rolling counter through the wireless communication. The car sharing system according to claim 1, wherein the portable terminal erases the value of the key-side rolling counter stored therein based on the notification of the command. The mobile terminal has a function capable of connecting to the Internet, and the management server uses the Internet connection function of the mobile terminal to send the value of the key-side rolling counter to the mobile terminal. 3. The car sharing system according to claim 1, wherein the car sharing system is configured to notify and acquire a value of the key-side rolling counter stored in the mobile terminal.

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