JP2004190233A - Automobile electronic key system, automobile electronic key server, automobile electronic key control process and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic key system capable of contributing to the smooth management of a vehicle for a service such as a car sharing or the like using one vehicle by a plurality of drivers. <P>SOLUTION: When an automobile electronic key server accepts a terminal ID, the vehicle ID and a using period to be required from a user's terminal, an available period is set on the basis of a reservation state of the vehicle and the using period to be required specified by the vehicle ID, a server key and a terminal key realizing confirmation in comparison with the available period are issued, a server key is kept, and when a key allotter section allotted to a user terminal specifying the terminal key with the terminal ID and the terminal key and the vehicle ID are received from a mobile divide, the server key kept by the key allotter section for an automobile specified by the vehicle ID and the terminal key received from the mobile device are still within a range of the available period, and as a result of comparison, on condition that the confirmation is realized, an unlocking signal transmission section for transmitting an unlocking signal instructing an unlocking of the vehicle to the mobile device. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle electronic key system, a vehicle electronic key server, a vehicle electronic key control method, and a program. In particular, the present invention relates to a vehicle electronic key system, a vehicle electronic key server, a vehicle electronic key control method, and a program that contribute to smooth vehicle operation in car sharing.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an attempt has been made to introduce a car sharing program for sharing a car with a plurality of members (for example, see Non-Patent Documents 1 and 2).
[0003]
[Non-patent document 1]
Traffic Ecology and Mobility Foundation, “Car Sharing Social Experiment Page”, [online], [Search November 26, 2002], Internet <URL: http: // www. ecomo. or. jp / topix / johounet04. html>
[Non-patent document 2]
Daihatsu Motor Co., Ltd., "car sharing", [online], [searched on November 26, 2002], Internet <http: // www. daihatsu. co. jp / its / sharing / stop. htm>
[0004]
[Problems to be solved by the invention]
However, in a service in which one vehicle is used by a plurality of people, such as car sharing, there has been a problem that as the number of users increases, smooth vehicle operation becomes difficult.
[0005]
Therefore, an object of the present invention is to provide a vehicle electronic key system, a vehicle electronic key server, a vehicle electronic key control method, and a program that can solve the above-mentioned problems. This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous embodiments of the present invention.
[0006]
[Means for Solving the Problems]
That is, according to the first embodiment of the present invention, an on-vehicle device for controlling unlocking of an automobile, a user terminal functioning as an electronic key for unlocking the automobile, and a key server for issuing key data of the electronic key are provided. In the vehicle electronic key system, the user terminal transmits the terminal ID for specifying the user terminal, the vehicle ID of the vehicle input from the user who wants to use the vehicle, and the desired use period to the key server, An issuance request unit for requesting issuance of a terminal key, which is key data for distribution to a user terminal, and a server key, which is key data to be held by the key server, and a terminal key is received from the key server and received. A key transmitting / receiving unit for transmitting the terminal key to the vehicle-mounted device when the user uses the car, and the key server receives the terminal ID, the vehicle ID, and the desired use period from the user terminal. Setting the usable period of the vehicle based on the reservation status of the vehicle specified by the vehicle ID and the desired use period, issuing a terminal key and a server key for which authentication is established by verification in the usable period, and issuing the server key The key distribution unit that stores the key and distributes the issued terminal key to the user terminal specified by the terminal ID, and is specified by the received vehicle ID when the vehicle ID and the terminal key are received from the vehicle-mounted device. On the condition that both the server key issued and stored by the key distribution unit and the terminal key received from the vehicle-mounted device are within the usable period, and that the verification is successful as a result of verification, An unlock signal transmitting unit that transmits an unlock signal instructing the unlocking of the terminal to the in-vehicle device specified by the vehicle ID, wherein the in-vehicle device receives the terminal key from the user terminal, Key to vehicle ID Having a transfer unit for transferring the key server together and unlocking unit for unlocking the motor vehicle when receiving the unlock signal from the key server.
[0007]
The key server further has a use record database that stores the use record of the automobile by the user in association with the terminal ID, and the key distribution unit uses the use record database based on the terminal ID received from the user terminal. User's use record may be extracted, and the usable period may be set based on the extracted use record.
[0008]
The usage record is the payment ability of the user based on the payment record of the usage fee of the vehicle.If the payment record extracted from the use record database is lower than the predetermined standard, the key distribution unit sets the usable period to a certain period. You may set within.
[0009]
The usage record is the accident history of the user.If the key distribution unit determines from the accident record extracted from the use record database that the accident by the user is biased to a specific time zone, the key distribution unit A valid terminal key may be issued in a time zone excluding a specific time zone.
[0010]
The in-vehicle device transmits the mileage in the use to the key server together with the vehicle ID as a use record when the user has finished using the car, and the key server uses the mileage for the use based on the received mileage. May be calculated, and the calculated usage fee may be displayed on the user terminal specified by the terminal ID.
[0011]
The in-vehicle device transmits the current position of the vehicle and the vehicle ID to the key server at the time when the use of the vehicle by the user is completed, and the key server determines that the vehicle identified by the received vehicle ID has the received current position. The fact that the vehicle is parked may be displayed on another user terminal.
[0012]
The in-vehicle device transmits the presence or absence of an accident in the use and the vehicle ID to the key server when the use of the vehicle by the user is completed. The fact that the vehicle specified by the ID cannot be used may be displayed on another user terminal. The in-vehicle device may lock the vehicle when determining that the distance from the user terminal is equal to or greater than a predetermined value.
[0013]
The key server further has a use record database that stores the use record of the automobile by the user in association with the terminal ID, and the key distribution unit uses the use record database based on the terminal ID received from the user terminal. User's use record, and based on the extracted use record, further sets the usable area of the vehicle by the user, issues a valid terminal key in the usable period and the usable area, When the terminal key is received from the user terminal, the current position of the vehicle is transferred to the key server together with the terminal key, and the unlocking signal transmission unit of the key server receives the terminal key and the current position from the transfer unit. At this time, when it is further satisfied that the received current position is within the valid usable area of the terminal key, an unlock signal may be transmitted to the vehicle-mounted device.
[0014]
According to the second aspect of the present invention, an automobile equipped with an in-vehicle device that controls unlocking of an automobile, a user terminal that functions as an electronic key that unlocks the automobile, and a key server that issues key data of the electronic key In an electronic key system, a user terminal transmits a terminal ID for specifying a user terminal, a vehicle ID of a vehicle input by a user who wants to use the vehicle, and a desired period of use to a key server, so that the user terminal can be mounted on the vehicle. An issuance request unit for requesting issuance of an in-vehicle key, which is key data for distribution to a device, and a terminal key, which is key data for distribution to a user terminal, and a terminal key is received from a key server. A key transmitting / receiving unit that transmits the terminal key to the in-vehicle device when the user uses the automobile, and the key server receives a terminal ID, a vehicle ID, and a desired use period from the user terminal. vehicle D. The available period of the vehicle is set based on the reservation status of the vehicle and the desired period of use specified in D. A vehicle key and a terminal key for which authentication is established by verification in the available period are issued, and the vehicle key is assigned to the vehicle ID. And a key distribution unit that distributes the terminal key to the user terminal specified by the terminal ID, and the vehicle-mounted device receives and stores the vehicle-mounted key from the key server. And when the terminal key is received from the user terminal, both the vehicle key stored in the vehicle key storage unit and the terminal key received from the user terminal are within the usable period, and the result of the verification is And an unlocking section for unlocking the vehicle on condition that the authentication is established.
[0015]
According to the third aspect of the present invention, an automobile electronic key server that issues key data of an automobile electronic key includes, from a user terminal of a user who wants to use an automobile, a terminal ID for specifying the user terminal; When the vehicle ID specifying the car and the desired use period are received, the usable period of the car is set based on the reservation status of the car specified by the vehicle ID and the desired use period, and the comparison is performed in the usable period. A key distribution unit that issues a server key and a terminal key for which authentication is established, stores the issued server key, and distributes the issued terminal key to a user terminal specified by the terminal ID; When the terminal key and the vehicle ID are received from the in-vehicle device to be transferred, the server key issued and stored by the key distribution unit for the vehicle specified by the received vehicle ID, and the terminal received from the in-vehicle device Unlock is transmitted to the in-vehicle device specified by the vehicle ID, provided that both are within the usable period and that the authentication is successful as a result of the verification, A signal transmission unit.
[0016]
According to a fourth aspect of the present invention, an in-vehicle device step for controlling unlocking of a vehicle, a user step for obtaining and using an electronic key for unlocking the vehicle, and a server for issuing key data of the electronic key The user step is input from the user to the key server that issues key data, the terminal ID specifying the user terminal of the user who wants to use the vehicle, and the user. By transmitting the vehicle ID of the automobile and the desired use period, an in-vehicle key that is key data for distribution to an in-vehicle device that controls unlocking of the automobile, and a terminal that is key data for distribution for a user terminal An issue requesting step for requesting issuance of a key; and a key transmitting / receiving step for receiving a terminal key from a key server and transmitting the received terminal key to an in-vehicle device when a user uses an automobile. The server step, when receiving the terminal ID, the vehicle ID, and the desired use period from the user terminal, determines the available period of the vehicle based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. Set, issue the in-vehicle key and terminal key that are authenticated by the verification during the usable period, distribute the in-vehicle key to the in-vehicle device specified by the vehicle ID, and send the terminal key to the user terminal specified by the terminal ID. The in-vehicle device step has a distribution step of distributing the in-vehicle key. The in-vehicle key step includes receiving and storing the in-vehicle key from the key server, and storing the in-vehicle key and the user when the terminal key is received from the user terminal. An unlocking step of unlocking the vehicle on condition that both the terminal key received from the terminal is within the usable period and that the authentication is established as a result of the collation.
[0017]
According to the fifth aspect of the present invention, an in-vehicle device step for controlling unlocking of an automobile, a user step for acquiring and using an electronic key for unlocking the automobile, and a server for issuing key data of the electronic key The user step is input from the user to the key server that issues key data, the terminal ID specifying the user terminal of the user who wants to use the vehicle, and the user. An issuance requesting the issuance of a terminal key, which is key data for distribution to a user terminal, and a server key, which is key data to be held by a key server, by transmitting a vehicle ID and a desired use period of an automobile. A requesting step, and a key transmitting and receiving step of receiving the terminal key from the key server and transmitting the received terminal key to an in-vehicle device that controls unlocking of the vehicle when the user uses the vehicle. The server step, when receiving the terminal ID, the vehicle ID, and the desired use period from the user terminal, determines the available period of the vehicle based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. A distribution step of setting, issuing a terminal key and a server key for which authentication is established during the usable period, storing the issued server key, and distributing the issued terminal key to the user terminal specified by the terminal ID When the vehicle ID and the terminal key are received from the in-vehicle device, the server key issued and stored in the distribution step for the vehicle identified by the received vehicle ID and the terminal key received from the in-vehicle device are both An unlock signal for instructing unlocking of the vehicle is transmitted to the on-vehicle device specified by the vehicle ID on condition that the authentication is established within the usable period and the verification result. An unlocking signal transmitting step, wherein the in-vehicle device step includes, when a terminal key is received from the user terminal, transferring the received terminal key to the key server together with the vehicle ID; and an unlocking signal from the key server. Unlocking the vehicle when the information is received.
[0018]
According to the sixth aspect of the present invention, a program for a computer that issues key data of an electronic key for a vehicle includes, from a user terminal of a user who wants to use the vehicle, a terminal ID for specifying the user terminal; When the vehicle ID specifying the car and the desired use period are received, the usable period of the car is set based on the reservation status of the car specified by the vehicle ID and the desired use period, and the comparison is performed in the usable period. A key distribution function that issues a server key and a terminal key for which authentication is established, stores the issued server key, and distributes the issued terminal key to a user terminal specified by the terminal ID, and a received terminal key that is a vehicle ID. When the terminal key and the vehicle ID are received from the in-vehicle device to be transmitted together with the server key, the key distribution unit issues and stores the server key issued and stored for the vehicle identified by the received vehicle ID, and The unlock signal for instructing the unlocking of the automobile is transmitted to the in-vehicle device specified by the vehicle ID on condition that all of the terminal keys thus obtained are within the usable period and that the authentication is established as a result of the verification. And an unlocking signal transmission function to be performed by the computer.
[0019]
Note that the above summary of the present invention does not list all of the necessary features of the present invention, and a sub-combination of these features may also be an invention.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described through embodiments of the present invention. However, the following embodiments do not limit the invention according to the claims, and all of the combinations of the features described in the embodiments are described. Is not necessarily essential to the solution of the invention.
[0021]
FIG. 1 shows a configuration of an automobile electronic key system 100 according to the first and second embodiments. The vehicle electronic key system 100 aims at realizing smooth vehicle operation in a service in which one vehicle is used by a plurality of people, such as car sharing. The vehicle electronic key system 100 includes an automobile electronic key system 100 that controls unlocking of the automobile 200, a user terminal 120 that functions as an electronic key that unlocks the automobile 200, A key server 50 is connected to the device 10 and issues key data of an electronic key. The key server 50 is operated by the operating company 132 that provides the car sharing service according to the present embodiment.
[0022]
Further, the automobile electronic key system 100 is connected to the key server 50 via the network 80, and guarantees the credit of the user who wants to join this service. And a mobile phone operator 134 that provides the communication service of the present invention. Furthermore, the vehicle electronic key system 100 may further include a personal computer 130 that accesses a site of the operating company 132 to apply for a subscription to the service and confirm the reservation status of the vehicle.
[0023]
A user who wishes to use the service accesses the homepage of the operating company 132 using the personal computer 130 or the user terminal 120 and applies for a subscription to the service. The insurance company 136 checks the credit status, accident history, and the like of the user who has applied for the service, gives a guarantee, and contacts the operating company 132. The operating company 132 receives the guarantee of the insurance company 136, registers the information of the user, and prepares to provide the service to the user through the homepage. Using the personal computer 130 or the user terminal 120, the user downloads registration information indicating the authority to use the service from the homepage and stores the information in a recording medium such as an IC chip of the user terminal 120.
[0024]
The operating company 132 displays available vehicles and the date and time on a homepage in consideration of the operation status and the reservation status of the managed automobile. The user uses the user terminal 120 or the personal computer 130 to apply for a reservation for the desired automobile 200. The key server 50 distributes valid key data within the reserved period to the user terminal 120, and excludes the reserved automobile 200 from the list of available vehicles. The user terminal 120 stores the distributed key data in a built-in IC chip or the like.
[0025]
The user terminal 120 transmits the stored key data to the in-vehicle device 10 when using the automobile 200 reserved by the user. When the key data transmitted to the vehicle-mounted device 10 is authenticated, the vehicle-mounted device 10 unlocks the automobile 200. The user drives the automobile 200 to the destination, for example, and abandons. If there is no problem in the condition of the abandoned vehicle, the operating company 132 registers the vehicle in a list of vehicles that can be reserved. The operating company 132 transmits billing data corresponding to the usage status of each user to the mobile phone operator 134. The mobile phone operator 134 collects a billing amount according to the billing data received from the operating company 132 at the time of collecting the telephone charge, and pays it to the operating company 132.
[0026]
According to the above-described vehicle electronic key system 100, since the vehicle 200 is unlocked using a valid electronic key within the reserved period, the user continues to use the vehicle 200 beyond the reservation period. Can be prevented. Therefore, the operating company 132 can smoothly operate the vehicle. In addition, since the insurance company 136 guarantees the credit of the user when the user subscribes to the service, the operating company 132 can avoid the risk of non-payment by the user. In addition, since the usage fee of the service can be collected in accordance with the charge of the mobile phone, both the user and the operating company 132 can easily settle the usage fee. That is, according to the vehicle electronic key system 100 according to the present embodiment, a service in which one vehicle is used by a plurality of persons, such as car sharing, can be smoothly operated.
[0027]
FIG. 2 shows an internal configuration of the vehicle electronic key system 100 according to the first embodiment. The user terminal 120 according to the present embodiment transmits, to the key server 50, a terminal ID for specifying the user terminal 120, and a vehicle ID and a desired use period of the vehicle 200 input from a user who wants to use the vehicle 120. By doing so, the issuance request unit 12 for requesting issuance of a terminal key, which is key data for distribution to the user terminal 120, and a server key, which is key data to be held by the key server 50, And a key transmitting / receiving unit for transmitting the received terminal key to the in-vehicle device 10 when the user uses the automobile 200.
[0028]
The key server 50 receives the terminal ID, the vehicle ID, and the desired use period from the reservation unit 16 that manages the reservation for each vehicle and the user terminal 120, and reserves the car 200 specified by the vehicle ID. And setting a usable period of the vehicle 200 based on the desired use period, issuing a terminal key and a server key for which authentication is established by collation in the usable period, storing the issued server key, and storing the issued terminal key. The key distribution unit 18 that distributes to the user terminal 120 specified by the terminal ID and the key distribution unit 18 that receives the vehicle ID and the terminal key from the in-vehicle device 10 for the vehicle 200 specified by the received vehicle ID On condition that both the server key to be issued and stored and the terminal key received from the in-vehicle device 10 are within the usable period, and that the verification is successful, Unlocking signal instructing the unlocking of 200 and a unlocking signal transmission unit 32 for transmitting to the vehicle-mounted device 10 identified by the vehicle ID.
[0029]
Further, the key server 50 has a use record database 30 that stores the use record of the automobile by the user in association with the terminal ID, and the key distribution unit 18 uses the use record database based on the terminal ID received from the user terminal 120. The usage record of the user may be extracted from the record database 30, and the usable period may be set based on the extracted use record. The use record database 30 may acquire the use record for each user from the mobile phone operator 134 and the insurance company 136. Thereby, the key server 50 can determine a user who has a high risk of hindering the vehicle operation based on the use record, and can set a usable period so as to reduce the risk.
[0030]
Further, the key server 50 has a usage fee calculation unit 34 that calculates a usage fee according to the usage results. The usage fee calculation unit 34 displays the calculated usage fee on the user terminal 120. Further, in order to request the collection of the usage fee, the fee data is transmitted to the mobile phone operator 134.
[0031]
The in-vehicle device 10 includes a transfer unit 40 that transfers the received terminal key to the key server 50 together with the vehicle ID when the terminal key is received from the user terminal 120, and an automobile that receives the unlock signal from the key server 50 And an unlocking section 22 for unlocking the lock 200. The in-vehicle device 10 further includes a positioning unit 42 that measures the position of the vehicle 200 and transmits the position to the transfer unit 40 and the key server 50, an accident detection unit 44 that detects an accident caused by the vehicle 200 and transmits the accident to the key server 50, And a travel distance measurement unit 46 for measuring the travel distance of the key server 200 and transmitting the measured travel distance to the key server 50.
[0032]
Thereby, the in-vehicle device 10 can transmit the operation status of the automobile 200 and the usage record of each user to the key server 50. Thus, the key server 50 can more smoothly operate the vehicle.
[0033]
Further, the in-vehicle device 10 includes a terminal detection unit 48 that transmits a locking signal for locking the automobile 200 to the unlocking unit 22 when detecting that the distance from the user terminal 120 is equal to or greater than a predetermined value. Thus, the vehicle-mounted device 10 locks the vehicle 200 when the user carrying the user terminal 120 is separated from the vehicle 200 by a predetermined distance or more.
[0034]
Therefore, the vehicle electronic key system 100 determines whether or not the user can satisfy the available period and the available area set for each user when the user once leaves the vehicle 200 and tries to get into the vehicle 200 again. Check again. As a result of the confirmation, if any of the conditions is not satisfied, the vehicle 200 is not unlocked, and the unsatisfied condition is displayed on the user terminal 120 as an error message.
[0035]
The recording medium 60 stores a program that causes the key server 50 to operate the reservation unit 16, the key distribution unit 18, the usage record database 30, the unlock signal transmission unit 32, and the usage fee calculation unit 34. As another method, the key server 50 may acquire such a program via a communication line.
[0036]
As described above, according to the vehicle electronic key system 100 according to the first embodiment, the unlocking of the vehicle 200 can be controlled according to the available period assigned to each user. Therefore, the operating company 132 can smoothly operate the vehicle. Further, since the key server authenticates the key data, the load on the vehicle-mounted device 10 can be reduced.
[0037]
FIG. 3 shows an internal configuration of an automobile electronic key system 100 according to the second embodiment. This embodiment is the same as the first embodiment described with reference to FIG. 2 except for the following description. The key distribution unit 18 included in the key server 50 issues an in-vehicle key, which is key data for distribution to the automobile 200, instead of the server key in the first embodiment. Then, the issued vehicle-mounted key is distributed to the vehicle-mounted device 10 specified by the vehicle ID.
[0038]
The in-vehicle device 10 receives the in-vehicle key from the key server 50 and stores it. The in-vehicle key stored in the in-vehicle key storage 20 when the terminal key is received from the user terminal 120 is used. An unlocking unit 22 that unlocks the automobile 200 on condition that both the terminal key received from the user terminal 120 and the terminal key are within the usable period and that the authentication is established as a result of the verification. The information on the available period may be included in the data of the vehicle key and the terminal key, or may be distributed as a separate file together with the vehicle key and the terminal key.
[0039]
According to the vehicle electronic key system 100 according to the present embodiment, the in-vehicle device 10 collates the terminal key received from the user terminal 120 with the in-vehicle key stored in the in-vehicle device. And it is possible to quickly determine whether or not authentication is possible.
[0040]
FIG. 4 is an example of a data format of the usage record database 30. The use record database 30 stores the record of use of the automobile 200 by the user in association with the terminal ID. An example of the terminal ID is a telephone number of a mobile phone. Examples of actual use results are the “number of uses”, “total mileage”, “accident history”, “skill level” of driving, and “payment ability” of the service. The “accident history” includes the “place” and “date and time” of the accident. In addition, the “skill level” is evaluated by, for example, classifying the traveling distance without accident obtained from the traveling history and the accident history. The “payment ability” is evaluated by the operating company 132 based on, for example, the result of paying the use price using this service. Alternatively, the mobile phone operator 134 may evaluate the mobile phone fee based on the payment result of the mobile phone fee and notify the key server 50 of the evaluation.
[0041]
The key server 50 can determine for each user the risk that the user will hinder the smooth operation of the vehicle by referring to such a usage record database 30. Thereby, when the user requests the reservation of the car, the key server 50 can restrict the use conditions for each user in order to reduce the degree of the risk.
[0042]
FIG. 5 is an example of a communication sequence by the in-vehicle device 10, the key server 50, and the user terminal 120 according to the first embodiment. First, when the user operates the user terminal 120 to request issuance of key data (S200), the issuance requesting unit 12 transmits a desired use period, a terminal ID, and a vehicle ID to the key server 50 (S202). ). When the key distribution unit 18 of the key server 50 receives the desired use period, the terminal ID, and the vehicle ID from the user terminal 120, the key distribution unit 18 refers to the reservation unit 16 based on the received vehicle ID to reserve the corresponding vehicle. The situation is confirmed (S204).
[0043]
The key distribution unit 18 confirms the usage record of the user by referring to the use record database 30 based on the received terminal ID (S206). Then, based on the desired use period received from the user terminal 120 and the confirmed reservation status and use results, the available period and available area for the user are set (S208).
[0044]
In step 208, the key distribution unit 18 limits the usable period for the user to a certain period, for example, when the payment ability as the usage record is lower than a predetermined standard. When the user's ability to pay is low enough to make the service unsuitable, the key distribution unit 18 may set the usable period to zero. As a result, the risk of non-payment by the user is reduced.
[0045]
In step 208, when the key distribution unit 18 determines that the accident by the user is biased to a specific time zone based on, for example, an accident history as a use record, the key distribution unit 18 determines a time zone excluding the specific time zone. Set as available period. As a result, the possibility of an accident by the user can be reduced, and the risk that the operation of the vehicle is disabled due to the accident can be reduced.
[0046]
In step 208, if the key distribution unit 18 determines that the accident by the user is biased to a specific area based on, for example, an accident history as a use record, the key distribution unit 18 extracts the area excluding the specific area. Is set as an area that can be used by users. The key distribution unit 18 may set the usable area of the user within a predetermined distance from the home based on the number of times of use, the total mileage, or the skill level as the use result.
[0047]
Next, the key distribution unit 18 issues a server key and a terminal key for which authentication is established by collation in the set available period, available time zone, and available area (S210), and stores the issued server key. On the other hand (S212), the terminal key is distributed to the user terminal 120 specified by the terminal ID (S214).
[0048]
The key transmitting / receiving unit 14 of the user terminal 120 receives the terminal key from the key server 50 and writes the terminal key on a recording medium such as an IC chip. Then, when the user requests to unlock the automobile 200 (S216), the terminal key and the terminal ID are transmitted to the in-vehicle device 10 (S218).
[0049]
The transfer unit 40 of the in-vehicle device 10 transfers the received terminal key, the current position measured by the positioning unit 42, the vehicle ID, and the terminal ID to the key server 50 in response to receiving the terminal key from the user terminal 120. (S220).
[0050]
When receiving the terminal key, the current position, and the vehicle ID from the transfer unit 40, the unlock signal transmission unit 32 of the key server 50 issues the key distribution unit 18 for the automobile 200 specified by the received vehicle ID. When both the server key to be stored and the terminal key received from the in-vehicle device 10 satisfy the usage conditions such as the available period, the available time, and the available area, and as a result of the verification, the authentication is established. (S224: Yes), an unlock signal for instructing unlocking of the automobile 200 is transmitted to the in-vehicle device 10 specified by the vehicle ID (S230). In step 224, when at least one of the use condition and the authentication is not satisfied (S224: No), the unlock signal transmitting unit 32 transmits an error message to the user terminal 120 (S226), and the user terminal 120 An error message is displayed to the user (S228).
[0051]
Upon receiving the unlocking signal from the unlocking signal transmitting unit 32, the unlocking unit 22 of the in-vehicle device 10 unlocks the automobile 200 (S232). Then, the user drives the automobile 200. When the user is likely to violate the assigned availability condition, the in-vehicle device 10 warns the user to comply with the availability condition. The availability condition for each user may be included in the key data, or may be distributed from the key server 50 as separate data associated with the key data.
[0052]
For example, if the driving is continued at a predetermined point in time before the available time zone for each user is exceeded, the in-vehicle device 10 issues a warning to the user that driving should be terminated. Also, when the vehicle 200 is traveling in a direction beyond the available area at a predetermined point just before the driver's available area, the user is requested not to cross the available area. Give a warning. According to such an automobile electronic key system 100, it is possible to prevent a user from violating an availability condition.
[0053]
When the use of the automobile 200 by the user is completed (S234: Yes), the in-vehicle device 10 displays the vehicle ID and the terminal ID, the fact that the use of the automobile 200 by the terminal user is completed, and the actual use result by the user. The data is transmitted to the key server 50 (S236). For example, the mileage measuring unit 46 transmits the mileage as the usage record to the key server 50 together with the vehicle ID and the terminal ID. The vehicle-mounted device 10 locks the vehicle 200 after confirming that the user has left the vehicle 200 (S237).
[0054]
The key server 50 calculates a usage fee for the use based on the received travel distance (S238), transmits the calculated usage fee to the user terminal 120 specified by the terminal ID (S240), and 120 displays the received usage fee (S242). Thus, the user can immediately confirm the usage fee when the use of the automobile 200 ends.
[0055]
In step 236, the key server 50 may receive the current position of the car 200 as the usage record and display on the other user terminal 120 that the car 200 is parked at the received current position. This allows another user to confirm the current position of the automobile 200 from the user terminal 120 when the use by the previous user is completed.
[0056]
In step 236, the key server 50 may receive the presence or absence of the accident as the use result. Then, when the fact that the accident has been received is received, the fact that the vehicle specified by the received vehicle ID cannot be used may be displayed on another user terminal 120. Thus, another user who plans to use the vehicle 200 can move on to the next action, for example, rebooking another vehicle or canceling the use of the vehicle. Finally, the use record database 30 of the key server 50 updates and stores the use record of the user (S244). This ends the communication sequence.
[0057]
According to the communication sequence according to the present embodiment, the use condition for each user is set based on the reservation status and the use record, and the unlocking of the automobile 200 is performed using key data that is valid according to the set use condition. , And the operating company 132 can smoothly operate the automobiles owned.
[0058]
FIG. 6 is an example of a communication sequence by the in-vehicle device 10, the key server 50, and the user terminal 120 according to the second embodiment. First, when issuance of key data is requested (S100), the issuance request unit 12 transmits a desired use period, a terminal ID, and a vehicle ID to the key server 50 (S102). The key distribution unit 18 of the key server 50 refers to the reservation unit 16 based on the received vehicle ID, and checks the reservation status of the automobile 200 (S103). Then, the key distribution unit 18 sets a usable period based on the desired use period and the reservation status (S104). The key distribution unit 18 issues an in-vehicle key and a terminal key that are authenticated by the verification during the set available period (S106), transmits the issued in-vehicle key to the in-vehicle device 10 specified by the vehicle ID, To the user terminal 120 specified by the terminal ID (S108).
[0059]
The in-vehicle key storage unit 20 of the in-vehicle device 10 receives and stores the in-vehicle key from the key server 50 (S110). The key transmitting / receiving unit 14 of the user terminal 120 receives the terminal key from the key server 50, writes the terminal key on a recording medium such as an IC chip, and when the user requests to unlock the automobile 200 (S112), the terminal ID and The terminal key is transmitted to the vehicle-mounted device 10 (S114). In response to receiving the terminal ID and the terminal key from the user terminal 120, the unlocking unit 22 uses both the vehicle key stored in the vehicle key storage unit 20 and the terminal key received from the user terminal 120. If it is within the possible period and the authentication is established as a result of the collation (S116: Yes), the vehicle is unlocked (S118).
[0060]
In step 116, if at least one of the terminal key and the vehicle key is not within the usable period or the authentication is not established as a result of the collation (S 116: No), the unlocking unit 22 transmits an error message to the user terminal 120. (S120). The user terminal 120 that has received the error message from the unlocking unit 22 displays the content of the error message (S122). Subsequent operations are the same as steps 234 to 244 described with reference to FIG. This is the end of the communication sequence.
[0061]
According to the above communication sequence, the in-vehicle device 10 collates the terminal key received from the user terminal 120 with the in-vehicle key stored therein, so that it is not necessary to refer to the key server 50 at the time of collation. Accordingly, the vehicle electronic key system 100 according to the present embodiment can quickly perform user authentication.
[0062]
As described above, the present invention has been described using the embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above embodiment. It is apparent from the description of the appended claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.
[0063]
As is clear from the above description, according to the first and second embodiments of the present invention, in a service in which a single vehicle is used by a plurality of people, such as car sharing, a vehicle that is smooth even if the number of users increases. An automobile electronic key system that can be operated can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an automobile electronic key system 100 according to first and second embodiments.
FIG. 2 is a block diagram showing an internal configuration of the vehicle electronic key system 100 according to the first embodiment.
FIG. 3 is a block diagram showing an internal configuration of an automobile electronic key system 100 according to a second embodiment.
FIG. 4 is an example of a data format of a usage record database 30;
FIG. 5 is an example of a communication sequence by the in-vehicle device 10, the key server 50, and the user terminal 120 according to the first embodiment.
FIG. 6 is an example of a communication sequence by the in-vehicle device 10, the key server 50, and the user terminal 120 according to the second embodiment.
[Explanation of symbols]
Reference Signs List 10 in-vehicle device, 12 issuance request unit, 14 key transmission / reception unit, 16 reservation unit, 18 key distribution unit, 20 in-vehicle key storage unit, 22 unlocking unit, 30 usage database, 32 unlocking signal transmission unit, 34 usage charge calculation Unit, 40 transfer unit, 42 positioning unit, 44 accident detection unit, 46 mileage measurement unit, 48 terminal detection unit, 50 key server, 60 recording medium, 80 network, 100 car electronic key system, 120 user terminal, 130 personal Computers, 132 Operating Companies, 134 Mobile Phone Operators, 136 Insurance Companies

Claims (14)

An automobile electronic key system including an in-vehicle device that controls unlocking of an automobile, a user terminal that functions as an electronic key that unlocks the automobile, and a key server that issues key data of the electronic key,
The user terminal,
A terminal ID for specifying the user terminal, and a vehicle ID and a desired use period of the vehicle input from a user who wants to use the vehicle are transmitted to the key terminal by transmitting them to the key server. A terminal key that is key data for, and an issuance request unit that requests issuance of a server key that is key data to be held by the key server;
A key transmitting and receiving unit that receives the terminal key from the key server, and transmits the received terminal key to the in-vehicle device when the user uses the vehicle,
The key server,
When the terminal ID, the vehicle ID, and the desired use period are received from the user terminal, the use of the vehicle is determined based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. A possible period is set, the terminal key and the server key for which authentication is established by the collation in the usable period are issued, the issued server key is stored, and the issued terminal key is specified by the terminal ID. A key distribution unit for distributing to the user terminal,
When the vehicle ID and the terminal key are received from the in-vehicle device, the server key issued and stored by the key distribution unit for the vehicle specified by the received vehicle ID is received from the in-vehicle device. An unlocking signal for instructing unlocking of the automobile is specified by the vehicle ID on condition that both the terminal key and the terminal key are within the usable period and the verification is successful. Having an unlock signal transmission unit for transmitting to the in-vehicle device,
The in-vehicle device,
A transfer unit that, when receiving the terminal key from the user terminal, transfers the received terminal key to the key server together with the vehicle ID.
An electronic lock system for unlocking the automobile when the unlock signal is received from the key server. The key server further includes a use result database that stores the use result of the vehicle by the user in association with the terminal ID,
The key distribution unit extracts the use record of the user from the use record database based on the terminal ID received from the user terminal, and further determines the usable period based on the extracted use record. The vehicle electronic key system according to claim 1, wherein The usage record is the payment ability of the user based on the payment record of the vehicle usage fee,
The vehicle electronic device according to claim 2, wherein the key distribution unit sets the usable period within a certain period when the paying ability extracted from the usage record database is lower than a predetermined standard. Key system. The use result is an accident history of the user,
The key distribution unit, when it is determined from the accident history extracted from the use record database that the accident by the user is biased to a specific time zone, the specific time zone in the available period The vehicle electronic key system according to claim 2, wherein the valid terminal key is issued in a time period excluding. The in-vehicle device, when the use of the car by the user is finished, transmits the travel distance in the use to the key server together with the vehicle ID as the use result,
The key server calculates a usage fee for the use based on the received travel distance, and displays the calculated usage fee on the user terminal specified by the terminal ID. 3. The vehicle electronic key system according to 2. The in-vehicle device transmits the current position of the vehicle and the vehicle ID to the key server at the time when the user has finished using the vehicle,
3. The vehicle electronic device according to claim 2, wherein the key server displays on another user terminal that the vehicle identified by the received vehicle ID is parked at the received current position. 4. Key system. The in-vehicle device transmits, to the key server, the presence or absence of an accident in the use and the vehicle ID at the time when the use of the car by the user ends.
The method according to claim 2, wherein the key server displays, on another user terminal, the fact that the use of the vehicle identified by the vehicle ID is not possible, when the fact that an accident has occurred in the use is received. The vehicle electronic key system according to claim 1. The vehicle electronic key system according to claim 2, wherein the on-vehicle device locks the vehicle when determining that a distance from the user terminal is equal to or greater than a predetermined value. The key server further includes a use result database that stores the use result of the vehicle by the user in association with the terminal ID,
The key distribution unit, based on the terminal ID received from the user terminal, extracts the use record of the user from the use record database, and based on the extracted use record, Further setting the available area of the car, issuing the terminal key valid in the available period and the available area,
The transfer unit of the in-vehicle device, when receiving the terminal key from the user terminal, together with the terminal key, transfer the current position of the vehicle to the key server,
The unlocking signal transmitting unit of the key server, when receiving the terminal key and the current position from the transfer unit, the received current position is within the valid available area of the terminal key The vehicle electronic key system according to claim 1, wherein the unlock signal is transmitted to the on-vehicle device when is further satisfied. An automobile electronic key system including an in-vehicle device that controls unlocking of an automobile, a user terminal that functions as an electronic key that unlocks the automobile, and a key server that issues key data of the electronic key,
The user terminal,
A terminal ID for specifying the user terminal, and a vehicle ID and a desired use period of the vehicle input from a user who wants to use the vehicle, are transmitted to the key server, so as to be distributed to the vehicle-mounted device. An issuance request unit that requests issuance of an in-vehicle key that is key data and a terminal key that is key data for distribution for the user terminal,
A key transmitting and receiving unit that receives the terminal key from the key server, and transmits the received terminal key to the in-vehicle device when the user uses the vehicle,
The key server,
When the terminal ID, the vehicle ID, and the desired use period are received from the user terminal, the use of the vehicle is determined based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. Set a possible period, issue the on-vehicle key and the terminal key for which authentication is established by collation in the available period, distribute the on-vehicle key to the on-vehicle device specified by the vehicle ID, and Having a key distribution unit for distributing to the user terminal specified by the terminal ID,
The in-vehicle device,
An in-vehicle key storage unit that receives and stores the in-vehicle key from the key server,
When the terminal key is received from the user terminal, both the vehicle key stored in the vehicle key storage unit and the terminal key received from the user terminal are within the available period, And an unlocking section for unlocking the automobile on condition that the authentication is established as a result of the collation. An automobile electronic key server that issues key data of an automobile electronic key,
When a terminal ID for specifying the user terminal, a vehicle ID for specifying the vehicle, and a desired use period are received from a user terminal of a user who wants to use the vehicle, the terminal is specified by the vehicle ID. A usable period of the vehicle is set based on the reservation status of the vehicle and the desired use period, a server key and a terminal key for which authentication is established by collation in the usable period are issued, and the issued server key is issued. A key distribution unit that stores and distributes the issued terminal key to the user terminal specified by the terminal ID;
When the terminal key and the vehicle ID are received from an in-vehicle device that transfers the received terminal key together with the vehicle ID, the key distribution unit issues and stores the automobile identified by the received vehicle ID. The server key and the terminal key received from the in-vehicle device are both within the usable period, and as a result of the collation, an open instruction for unlocking the vehicle is provided. An unlock signal transmitting unit that transmits a lock signal to the in-vehicle device specified by the vehicle ID. A vehicle electronic key control method comprising: an in-vehicle device step for controlling unlocking of a vehicle; a user step for acquiring and using an electronic key for unlocking the vehicle; and a server step for issuing key data of the electronic key. And
The user step comprises:
Transmitting, to a key server that issues the key data, a terminal ID for specifying a user terminal of a user who wants to use the vehicle, and a vehicle ID and a desired use period of the vehicle input by the user; An issuance requesting step for requesting issuance of an in-vehicle key that is key data for distribution to an on-vehicle device that controls unlocking of the vehicle and a terminal key that is key data for distribution for the user terminal. When,
A key transmitting / receiving step of receiving the terminal key from the key server, transmitting the received terminal key to the in-vehicle device when the user uses the vehicle,
The server step comprises:
When the terminal ID, the vehicle ID, and the desired use period are received from the user terminal, the use of the vehicle is determined based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. Set a possible period, issue the on-vehicle key and the terminal key for which authentication is established by collation in the available period, distribute the on-vehicle key to the on-vehicle device specified by the vehicle ID, and Having a delivery step of delivering to the user terminal specified by the terminal ID,
The in-vehicle device step includes:
An in-vehicle key storing step of receiving and storing the in-vehicle key from the key server,
When the terminal key is received from the user terminal, both the stored in-vehicle key and the terminal key received from the user terminal are within the usable period, and as a result of verification, And an unlocking step of unlocking the vehicle on condition that the following condition is satisfied. A vehicle electronic key control method comprising: an in-vehicle device step for controlling unlocking of a vehicle; a user step for acquiring and using an electronic key for unlocking the vehicle; and a server step for issuing key data of the electronic key. And
The user step comprises:
Transmitting, to a key server that issues the key data, a terminal ID for specifying a user terminal of a user who wants to use the vehicle, and a vehicle ID and a desired use period of the vehicle input by the user; According to, an issuance requesting step of requesting issuance of a terminal key that is key data for distribution to the user terminal, and a server key that is key data to be held by the key server,
A key transmitting / receiving step of receiving the terminal key from the key server, transmitting the received terminal key to an in-vehicle device that controls unlocking of the vehicle when the user uses the vehicle,
The server step comprises:
When the terminal ID, the vehicle ID, and the desired use period are received from the user terminal, the use of the vehicle is determined based on the reservation status of the vehicle specified by the vehicle ID and the desired use period. A possible period is set, the terminal key and the server key for which authentication is established by the collation in the usable period are issued, the issued server key is stored, and the issued terminal key is specified by the terminal ID. Delivering to the user terminal,
Upon receiving the vehicle ID and the terminal key from the in-vehicle device, the server key issued and stored in the distribution step for the vehicle identified by the received vehicle ID, and received from the in-vehicle device Both the terminal key is within the usable period and, as a result of the collation, an unlocking signal for instructing unlocking of the automobile is specified by the vehicle ID on condition that the authentication is established. Unlocking signal transmission step of transmitting to the in-vehicle device,
The in-vehicle device step includes:
A transfer step of, when receiving the terminal key from the user terminal, transferring the received terminal key to the key server together with the vehicle ID;
An unlocking step of unlocking the automobile when the unlock signal is received from the key server. A computer program for issuing key data of an automobile electronic key,
When a terminal ID for specifying the user terminal, a vehicle ID for specifying the vehicle, and a desired use period are received from a user terminal of a user who wants to use the vehicle, the terminal is specified by the vehicle ID. A usable period of the vehicle is set based on the reservation status of the vehicle and the desired use period, a server key and a terminal key for which authentication is established by collation in the usable period are issued, and the issued server key is issued. A key distribution function of storing and distributing the issued terminal key to the user terminal specified by the terminal ID;
When the terminal key and the vehicle ID are received from an in-vehicle device that transfers the received terminal key together with the vehicle ID, the key distribution unit issues and stores the automobile identified by the received vehicle ID. The server key and the terminal key received from the in-vehicle device are both within the usable period, and as a result of the collation, an open instruction for unlocking the vehicle is provided. A program for causing a computer to realize an unlocking signal transmission function of transmitting a lock signal to the on-vehicle device specified by the vehicle ID.

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