CN106603664B

CN106603664B - Vehicle key system

Info

Publication number: CN106603664B
Application number: CN201611159244.XA
Authority: CN
Inventors: 谢芳铃; 赵冀江
Original assignee: Continental Investment China Co ltd
Current assignee: Continental Investment China Co ltd
Priority date: 2016-12-15
Filing date: 2016-12-15
Publication date: 2020-04-10
Anticipated expiration: 2036-12-15
Also published as: CN106603664A

Abstract

Embodiments of the present invention provide a vehicle key system. The vehicle key system includes: network server, portable equipment, vehicle-mounted assembly. The network server is configured to grant permission to operate the specified vehicle to the portable device, and distribute a key to the authorized portable device and the in-vehicle component of the specified vehicle. The portable device communicates with the vehicle component offline using the key. According to the vehicle key system of the embodiment of the invention, the communication of the portable device with the vehicle can be ensured under a network-free environment.

Description

Vehicle key system

Technical Field

The invention relates to vehicle technology, in particular to a vehicle key system.

Background

Keyless entry and keyless start systems have been widely adopted in various vehicles. In one solution, network technology is used. The user communicates with the web server through a portable device (e.g., a smartphone), which then communicates with and controls the vehicle. However, in a closed environment such as a basement, communication between the portable device and the network server and/or communication between the network server and the vehicle may be limited due to poor network signals, which may increase waiting time of the user or cause a failure of the user to enter the vehicle. Network technologies have difficulty supporting applications within a closed environment such as a vault.

There is room for improvement in vehicle key systems.

Disclosure of Invention

Embodiments of the present invention provide a vehicle key system.

According to an aspect of the present invention, there is provided a vehicle key system including: network server, portable equipment, vehicle-mounted assembly. The network server is configured to grant permission to operate the specified vehicle to the portable device, and distribute a key to the authorized portable device and the in-vehicle component of the specified vehicle. The portable device includes: a first network module and a first communication module. The first network module is configured to transmit a request for granting the authority to operate the specified vehicle to the network server, and acquire the authority granted by the network server and the distributed key. The first communication module is configured to communicate offline with the in-vehicle component using the key. The on-board unit includes: a second network module, and a second communication module. The second network module is configured to obtain a key distributed by the network server. The second communication module is configured to communicate offline with the portable device using the key.

In an embodiment of the invention, the network server is configured to grant the portable device the right to operate the specified vehicle according to a setting of an owner of the specified vehicle.

In an embodiment of the invention, the rights include one or more of the following functions: unlock/open trunk, unlock/open door, start engine.

In an embodiment of the invention, the rights include a usage time limit for the function.

In an embodiment of the invention, the rights include a usage limit for the function.

In an embodiment of the invention, the key comprises one or more of the following: the method comprises the steps of initial key, communication link key, and authentication key of the portable device and the vehicle-mounted component.

In an embodiment of the present invention, the first communication module uses a bluetooth module and/or a near field communication module.

In an embodiment of the invention, the portable device further comprises: a first Bluetooth location module configured to communicate with a second Bluetooth location module of the in-vehicle component. The on-board unit includes: and the second Bluetooth positioning module. The second bluetooth location module is configured to communicate with the first bluetooth location module. The vehicle-mounted assembly is configured to measure the distance from the first Bluetooth positioning module to the second Bluetooth positioning module through the communication between the second Bluetooth positioning module and the first Bluetooth positioning module. And according to the distance, determining the position of the first Bluetooth positioning module, and according to the position of the first Bluetooth positioning module, executing corresponding vehicle operation under the authority.

In an embodiment of the present invention, the on-board assembly further comprises: a third Bluetooth positioning module and a fourth Bluetooth positioning module. The vehicle-mounted assembly is configured to measure distances from the first Bluetooth positioning module to the second Bluetooth positioning module, the third Bluetooth positioning module and the fourth Bluetooth positioning module through communication between the second Bluetooth positioning module, the third Bluetooth positioning module and the fourth Bluetooth positioning module and the first Bluetooth positioning module. And determining the position of the first Bluetooth positioning module according to the distance.

In the embodiment of the invention, the second Bluetooth positioning module is positioned on the left side of the vehicle, the third Bluetooth positioning module is positioned on the right side of the vehicle, and the fourth Bluetooth positioning module is positioned on the trunk side of the vehicle.

In an embodiment of the present invention, the second bluetooth positioning module comprises: the timing module is configured to record transmission time required by the transmission of the Bluetooth signals between the second Bluetooth positioning module and the first Bluetooth positioning module; and the calculating module is configured to calculate the distance between the second Bluetooth positioning module and the first Bluetooth positioning module according to the transmission time and the transmission speed of the Bluetooth signals.

In an embodiment of the present invention, the second bluetooth positioning module further comprises: and the Bluetooth signal strength detection module is configured to detect the strength of the Bluetooth signal sent by the first Bluetooth positioning module. The calculation module is also configured to calculate a distance between the second bluetooth positioning module and the first bluetooth positioning module according to the strength of the bluetooth signal.

In an embodiment of the invention, the calculation module is configured to set the distance calculated from the transmission time and the speed of the bluetooth signal transmission as the first distance measurement. Setting the distance calculated from the intensity of the bluetooth signal as a second distance measurement value. And performing a weighted average of the first distance measurement and the second distance measurement to obtain a distance calculation.

According to the vehicle key system of the embodiment of the invention, the communication of the portable device with the vehicle can be ensured under a network-free environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, it being understood that the drawings described below relate only to some embodiments of the present invention and are not limiting thereof, wherein:

FIG. 1 is a schematic block diagram of a vehicle key system of an embodiment of the present invention;

fig. 2 is a schematic flowchart of a control method of a vehicle key system of the embodiment of the invention;

FIG. 3 is a schematic block diagram of a vehicle key system including a plurality of portable devices of an embodiment of the present invention;

FIG. 4 is a flowchart of the owner of the vehicle setting the authority for the user in the vehicle key system shown in FIG. 3;

fig. 5 is a schematic diagram of a structure for positioning a portable device in the vehicle key system of the embodiment of the invention;

FIG. 6 is a flow chart of the architecture shown in FIG. 5 for locating a portable device;

FIG. 7 is a schematic block diagram of a Bluetooth positioning module configuration of the in-vehicle assembly;

fig. 8 is a schematic flow chart of distance measurement and calculation by the structure shown in fig. 7.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, also belong to the scope of protection of the invention.

Fig. 1 is a schematic block diagram of a vehicle key system provided by an embodiment of the present invention. As shown in fig. 1, a vehicle key system 1 includes: a network server 2, a portable device 3 and a vehicle-mounted component 4. The network server 2 is configured to grant the portable device 3 the authority to operate the specified vehicle, and distribute the key to the authorized portable device 3 and the vehicle-mounted component 4 of the specified vehicle. The portable device 3 includes: a first network module 31, and a first communication module 32. The first network module 31 is configured to transmit a request for granting the authority to operate the specified vehicle to the network server 2, and acquire the authority of the network server 2, and the distributed key. The first communication module 32 is configured to communicate offline with the in-vehicle component 4 using a key. The on-board unit 4 includes: a second network module 41, and a second communication module 42. The second network module 41 is configured to obtain the key distributed by the network server 2. The second communication module 42 is configured to communicate offline with the portable device 3 using the key.

According to the vehicle key of the embodiment of the invention, the network server 2 performs operations of granting the authority and distributing the key on line, so that the safety can be ensured. The portable device 3 and the in-vehicle component 4 perform off-line communication, and the off-line communication is point-to-point communication without the support of networks such as the internet, a local area network and the like, so that convenience can be ensured. In this way, reliable operation of the vehicle by the user can be realized in a non-network environment in a garage or other areas.

The portable device 3 may be a dedicated device, such as a customized electronic key, or may be an electronic device that is already available to the user, such as a smart phone. In the case of using a smartphone, the network module and the communication module already configured on the smartphone can be utilized. At this time, only the application program needs to be installed on the smart phone, and the smart phone can be used as a key of a vehicle, so that convenience is provided.

The first communication module 32 may use any one or more wireless communication technologies, such as radio frequency, bluetooth, and/or near field communication, among others. When the portable device 3 is an existing electronic device of the user, such as a smart phone, the existing resources can be fully utilized by selecting the bluetooth module and/or the near field communication module. It will be appreciated that the above modules, such as the bluetooth module and the near field communication module, may be used simultaneously to take advantage of the different communication means at different communication distances and provide the same reliable communication when the distance between the user and the vehicle changes.

Fig. 2 is a schematic flowchart of a control method of a vehicle key system provided by an embodiment of the present invention. As shown in fig. 2, the vehicle key system control method includes the steps of: s201, the portable device transmits a request for granting the authority to operate the designated vehicle to the web server. S202, the network server grants the authority to operate the specified vehicle to the portable device, and distributes the key to the authorized portable device and the specified vehicle. S203, the portable module and the designated vehicle use the key to communicate.

In step S201, the portable device of the user transmits a request for granting the authority to operate the designated vehicle to the web server. This process may be initiated by the user, for example, the user operating a key on the portable device to initiate the portable device sending a request to the network server. In case the portable device is a smartphone, the keys may be buttons in corresponding control software running on the smartphone. The user sends the request only when needed, which can reduce power consumption. It should be appreciated that this process may also be automated by the portable device, which may communicate with the network server at predetermined times to send a request to grant permission. For example, the predetermined time may be any time when the control software is started or set by the user, or any time when the portable device detects that good communication with the network server is possible.

In step S202, the web server grants the authority to operate the specified vehicle to the portable device, and distributes the key to the authorized portable device and the specified vehicle.

After receiving the request from the portable device, the network server may perform authentication using the user identification information included in the request information. In case the authentication is passed, different rights are granted to the portable device. The rights may include one or more of the following functions: unlocking/opening the trunk, unlocking/opening the doors, starting the engine. For example, if the user only needs to open the trunk to access the items, the user is not granted the authority to open the vehicle door and start the engine.

The key is distributed by the network server instead of being fixedly stored in the portable device, so that the network server can update the key at any time to improve the security. Further, the key may correspond to a privilege, e.g., a higher level privilege may correspond to a longer key.

In step S203, the portable module and the designated vehicle use key communication. In the case where the network server has distributed the key to both the portable device and the in-vehicle component, the portable module and the designated vehicle communicate using the key. The key may be used in a unified manner or individually for each step of initiating communication, encrypting communication data, verifying both parties' identities, and the like, and thus, the key may include one or more of the following: an initial key, a communication link key, an authentication key of the portable device and the in-vehicle component, and the like. It should be understood that embodiments of the present invention are not limited to the number of keys used, and that the communication may be accomplished using only one key.

Fig. 3 is a schematic block diagram of a vehicle key system including a plurality of portable devices of an embodiment of the present invention. The network server 2 can distribute the key to a plurality of portable devices 3, and therefore, the vehicle key system of the embodiment of the invention also facilitates sharing of the vehicle. For example, the owner of the vehicle may store a configuration file to the web server via the owner's portable device 300 to inform the web server of the vehicle's rights that the user may obtain. After the user sends a request to the web server through the user's portable device 301, the right granted by the web server can be obtained. The owner does not need to hand over the physical key with the user, and the convenience is improved. The identification method of the network server 2 for the user's identity may be a combination identification method of an account name and a password.

In one practical application, the configuration file may include the information in table 1, table 2, and table 3.

TABLE 1 Authority of first and second users for a vehicle

TABLE 2 Authority of third and fourth users for vehicle

TABLE 3 postal operator Authority for vehicle

In the above table, for an account, one or more authenticated vehicles may be under the account name of one user, or a vehicle may not be owned, and only the vehicle usage rights shared by other users may be used. In an embodiment, it may be set that account information requires real-name authentication, and that vehicles owned under the account name also need to provide detailed information.

After a user logs in an account of the user through a mobile phone or other portable equipment 3 and establishes communication with the vehicle-mounted component 4, the functions of opening a vehicle door, starting an engine and the like can be used without other entity keys. The owner may grant the authority of the vehicle under its name to another user, and in general, it may be defined that only authenticated owners have the authority to grant the authority of the vehicle under their name to other users.

For vehicles, the vehicle has a unique number identifying the authenticated vehicle, which is stored in the on-board assembly 4.

As for the authority, the degree of control over the vehicle is distinguished by the authority. The owner of the certificate has complete control right for the vehicle, and the functions of unlocking/opening a trunk, unlocking/opening a vehicle door, starting an engine, monitoring the state of the vehicle and the like are included. For these functions, a time limit of use, and a number of times limit of use may be set.

In the embodiment, the vehicle-mounted component 4 can be an electronic module in a vehicle, and is integrated with a bluetooth module and/or a near field communication module to realize communication between the vehicle-mounted component and a mobile phone; the WIFI/mobile communication network module (such as a 3G, 4G and 5G network module) is integrated to realize communication with the network server 2; and the GPS module is integrated, so that the vehicle can be positioned.

The on-board unit 4 may have a control circuit directly connected to the actuator of the vehicle to perform the above-described functions, but this may make the structure of the on-board unit 4 complicated. Therefore, the vehicle-mounted component 4 CAN be connected in a CAN network of a vehicle and actively interacts and communicates with the vehicle body through the CAN, and then information of the vehicle body interacts with the mobile phone. For example, the vehicle-mounted component 4 transmits the user's request for the control of the vehicle door, the control of the vehicle window, the control of the engine, and the like to the corresponding controller through the CAN network, and the corresponding vehicle controller controls the actuator of the vehicle to realize the above-mentioned functions.

In this practical application, it is the carrier that can gain the authority to open the trunk once in 8 hours, according to the configuration of the owner, by communicating with the network server 2, to place the carrier's letter or carrier item in the trunk of the vehicle. The carrier can also perform a GPS location for the vehicle within 8 hours for more convenient location of the vehicle.

Also in this practical application, the first user may be a car rental company and the fourth user may be a customer of the car rental company. The client applies for renting the vehicle within 72 hours from the vehicle renting company through the network, and the process can be finished at the mobile phone end instantly. And the car rental company can send the position information of the rentable car to the customer for the customer to select when receiving the car rental intention of the customer. After the car rental company receives the application and authorizes the client, the client can use the car within 72 hours to obtain the authority of opening the car door, opening the luggage compartment, starting the engine and positioning the car by GPS.

Fig. 4 is a flowchart of setting authority for a user by an owner of a vehicle in the vehicle key system shown in fig. 3. In step S401, the owner sets the authority of the user. The owner may operate software on the owner's portable device 300 and the web server 2 may maintain the associated configuration file. In step S402, the web server grants an authority to the user according to the setting. Upon receiving a request for granting permission from any one of the users, the network server 2 can authenticate the identity of the user and look up permission settings associated with the user in the configuration file to grant corresponding permission to the user.

In an embodiment of the present invention, the network server is configured to grant the portable device the authority to operate the specified vehicle according to the setting of the owner of the specified vehicle, improving the security while ensuring the convenience.

In addition, if an accurate positioning function cannot be provided when the smart phone is used as a vehicle key, it is difficult to realize a function that requires accurate determination of the relative position of the key and the vehicle. For example, functions such as keyless entry and keyless start cannot be realized.

Fig. 5 is a schematic diagram of a structure for positioning a portable device in the vehicle key system of the embodiment of the invention. Fig. 6 is a flow chart of the architecture shown in fig. 5 for locating a portable device.

As shown in fig. 5, the portable device 3 further includes: a first bluetooth positioning module 33 configured to communicate with a second bluetooth positioning module 43 of the in-vehicle assembly 4. The on-board unit 4 includes: a second bluetooth positioning module 43. The second bluetooth positioning module 43 is configured to communicate with the first bluetooth positioning module 33. The on-board assembly 4 is configured to measure the distance from the first bluetooth positioning module 33 to the second bluetooth positioning module 43 through the communication of the second bluetooth positioning module 43 with the first bluetooth positioning module 33. And determines the position of the first bluetooth positioning module 33 according to the distance, and performs the corresponding vehicle operation under the authority according to the position of the first bluetooth positioning module 33.

As shown in fig. 6, the process of performing positioning starts at step S601, and the portable device performs bluetooth communication with the in-vehicle component. When the portable device 3 is a smart phone or the like, since the bluetooth communication technology is widely applied to the smart phone or the like, it is not necessary to add an additional positioning module to the portable device 3. In step S602, the distance from the portable device to the in-vehicle component is measured according to bluetooth communication. The measured distance is set to r 1. In step S603, the position of the portable device is determined according to the distance. Taking the second bluetooth positioning module 43 as the center of the circle and r1 as the radius, it can be known that the first bluetooth positioning module 33 is located at one position on the circle. Based on such position information, the vehicle can be brought into a state of preparatory work. For example, the door may be unlocked upon determining that the portable device 3 enters a predetermined range around the vehicle.

Further, as shown in fig. 5, in the embodiment of the present invention, the vehicle-mounted component 4 may further include: a third bluetooth positioning module 44 and a fourth bluetooth positioning module 45. The on-board assembly 4 is configured to measure the distance from the first bluetooth positioning module 33 to the second bluetooth positioning module 43, the third bluetooth positioning module 44 and the fourth bluetooth positioning module 45 through the communication of the second bluetooth positioning module 43, the third bluetooth positioning module 44 and the fourth bluetooth positioning module 45 with the first bluetooth positioning module 33. And determines the location of the first bluetooth location module 33 based on the distance.

The distances obtained by measurement are set to be r1, r2 and r3 respectively, a first circumference is obtained by taking the second bluetooth positioning module 43 as the center of a circle, r1 as the radius, a second circumference is obtained by taking the third bluetooth positioning module 44 as the center of a circle, r2 as the radius, a third circumference is obtained by taking the third bluetooth positioning module 45 as the center of a circle and r3 as the radius, and the three circumferences are intersected at one point, which is the position of the first bluetooth positioning module 33. Based on this accurate position information, the vehicle can be made to enter more states. For example, when the portable device 3 is located on the cab side, the door of the cab can be unlocked while the other doors are kept closed. The portable device 3 can unlock the trunk when it is located on the trunk side. When the portable device 3 is located in the vehicle, the control of the engine can be unlocked.

In the embodiment of the present invention, it may be set that: the second bluetooth positioning module is located the vehicle left side, and the third bluetooth positioning module is located the vehicle right side, and the fourth bluetooth positioning module is located vehicle luggage compartment side. This can facilitate confirmation of the positional relationship between the portable device 3 and the vehicle door, the luggage compartment, and the like. It should be understood that other numbers and other arrangements may be used.

The specific ranging method is further described below.

Fig. 7 is a schematic block diagram of the bluetooth positioning module structure of the in-vehicle assembly. As shown in fig. 7, taking the second bluetooth positioning module 43 as an example for explanation, the second bluetooth positioning module 43 includes: a timing module 432 configured to record a transmission time required for the bluetooth signal to be transmitted between the second bluetooth positioning module 43 and the first bluetooth positioning module 33; a calculating module 431 configured to calculate the distance between the second bluetooth positioning module 43 and the first bluetooth positioning module 33 according to the transmission time and the speed of the bluetooth signal transmission.

In the above-described configuration, when the distance from the portable device to the in-vehicle module is measured based on the bluetooth communication, first, the transmission time required for the transmission of the bluetooth signal between the portable device and the in-vehicle module is recorded. Still taking the second bluetooth positioning module 43 as an example, at this time, the transmission time required for the bluetooth signal to be transmitted between the second bluetooth positioning module 43 and the first bluetooth positioning module 33 needs to be acquired.

Under the condition that the clock offsets of the first bluetooth positioning module 33 and the second bluetooth positioning module 43 do not affect the ranging accuracy, the transmission time can be obtained only by one signal transmission, specifically, the sending party (e.g., the first bluetooth positioning module 33) writes the sending time in the sent data, and the receiving party (e.g., the second bluetooth positioning module 43) records the receiving time. The receiving side can acquire the transmission time by using the receiving time and the sending time obtained by analyzing the sent data.

Under the condition that the influence of the clock offset of the first bluetooth positioning module 33 and the second bluetooth positioning module 43 on the ranging precision cannot be ignored, the ranging precision can be improved through multiple times of communication. Specifically, the receiving side (e.g., the second bluetooth positioning module 43) may first send the inquiry information and record the sending time, and the sending side (e.g., the first bluetooth positioning module 33) waits for a predetermined time interval after receiving the inquiry information and then sends the response information. The receiving side receives the response information and records the receiving time. By using the time ranging, the influence of the clock offset on the ranging accuracy can be reduced after subtracting the predetermined waiting time of the transmitting side from the time interval between the transmitting time and the receiving time, that is, the time required for the bluetooth signal to be transmitted from the transmitting side to the receiving side and then returned from the receiving side to the transmitting side. This process can also be performed multiple times to improve accuracy.

Then, after the transmission time is obtained, the distance between the portable device and the vehicle-mounted component can be calculated according to the transmission time and the transmission speed of the Bluetooth signal.

In an embodiment of the present invention, the second bluetooth positioning module 43 may further include: a bluetooth signal strength detecting module 433 configured to detect the strength of the bluetooth signal transmitted by the first bluetooth positioning module 33. The calculation module 431 is further configured to calculate the distance between the second bluetooth positioning module 43 and the first bluetooth positioning module 33 according to the strength of the bluetooth signal.

Accordingly, measuring the distance from the portable device to the in-vehicle component according to the bluetooth communication may further include: the strength of a bluetooth signal transmitted by a portable device is detected. And calculating the distance between the portable equipment and the vehicle-mounted assembly according to the strength of the Bluetooth signal.

According to the above configuration, when the portable device 3 is a device such as a smartphone, it is possible to perform ranging for the portable device 3 without changing the hardware of the portable device 3. Therefore, the smart phone of the user can be used for the functions of complete keyless entry and keyless starting without modification.

In the embodiment of the invention, any one of the distance measuring modes can be directly used for obtaining the distance for positioning, and the distances measured by different distance measuring modes can be further fused to improve the precision of distance measuring and positioning.

Fig. 8 is a schematic flow chart of distance measurement and calculation by the structure shown in fig. 7. As shown in fig. 8, the calculation module 431 may be configured to perform the following steps: s801, setting a distance calculated from the transmission time and the speed of the bluetooth signal transmission as a first distance measurement value L1; s802, setting the distance calculated according to the strength of the Bluetooth signal as a second distance measurement value L2; s802, a weighted average is performed on the first distance measurement value and the second distance measurement value to obtain a distance calculation value L.

The first bluetooth positioning module 33 and the second bluetooth positioning module 43 are still exemplified. Generally, when the distance between the two is less than a first threshold (e.g., 1m), the time for the bluetooth signal to travel between the two will be too short (e.g., less than 1ns) to be accurately measured, and thus ranging cannot be performed according to the transmission time and the speed of transmission of the bluetooth signal. At this time, L may be made L2, i.e., L2 weight is set to 1. When the distance between the two is greater than a second threshold (e.g., 10m), the attenuation of the bluetooth signal will be too large to be measured according to the strength of the bluetooth signal. At this time, L may be made L1, i.e., L1 weight is set to 1. While the weight of L2 may be increased stepwise and the weight of L1 decreased during the change of the distance between the two from the second threshold to the first threshold. The specific weight value can be obtained through experiments, and the embodiment of the invention is not further limited. For example, if the measurement result is L1 ═ 5m and L2 ═ 5.1m, it is determined that the actual distance between the two is in the vicinity of the position intermediate between the first threshold and the second threshold, and the weight of L1 is set to 0.5 and the weight of L2 is set to 0.5, resulting in L ═ 5.05 m.

According to the vehicle key system provided by the embodiment of the invention, a portable device such as a smart phone can be used as a vehicle key, so that the vehicle can be conveniently operated. The application programs of the smart phone and the like are convenient to expand, and the owner and/or the user can know the vehicle body information, the vehicle position and the like in a long distance. And the network server is used for strictly managing the authority and the secret key, so that the safety is improved. The authority and the secret key are convenient to distribute, the number of users of the vehicle is easy to increase, and the use efficiency of the vehicle is improved.

Furthermore, in the case where the portable device 3 is a smartphone or the like, ranging for the portable device 3 can be achieved without any change to the hardware of the portable device 3. Therefore, the smart phone of the user can be used for the functions of complete keyless entry and keyless starting without modification.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A vehicle key system comprising: a network server, a portable device, a vehicle-mounted component;

the portable device includes: a first network module and a first communication module;

the on-board unit includes: a second network module and a second communication module;

wherein, in the stage that the owner of the vehicle sets the authority of the user to the vehicle:

the owner of the vehicle stores a configuration file to a network server so as to inform the network server of the authority of the vehicle which can be obtained by one or more users respectively; the permissions include a usage time limit for a function;

wherein, at the stage of granting the portable device the right to specify the vehicle:

the first network module is configured to send a request for granting a right to operate a specified vehicle to the network server online;

the network server is configured to: verifying an identity of a user of the portable device; searching for permission settings related to a user of the portable device in a configuration file if the authentication is passed; in the case that there is a related authority setting, granting an authority to operate a specified vehicle to the portable device on line according to the authority setting, and distributing a key to the authorized portable device and the vehicle-mounted component of the specified vehicle;

the first network module is also configured to acquire the authority granted by the network server and the distributed key on line; and is

The second network module is configured to acquire the secret key distributed by the network server online;

wherein, in the phase of using the specified vehicle by the portable device:

the first communication module is configured to communicate offline with the in-vehicle component using the key; and is

The second communication module is configured to communicate offline with the portable device using the key.

2. The vehicle key system of claim 1, the rights comprising one or more of the following functions: unlock/open trunk, unlock/open door, start engine.

3. The vehicle key system of claim 2, the rights comprising a usage limit for the function.

4. The vehicle key system of claim 1, the key comprising one or more of: the method comprises the steps of initial key, communication link key, and authentication key of the portable device and the vehicle-mounted component.

5. The vehicle key system according to claim 1, the first communication module using a bluetooth module and/or a near field communication module.

6. The vehicle key system of claim 1, wherein the portable device further comprises: a first Bluetooth location module configured to communicate with a second Bluetooth location module of the in-vehicle component;

the on-board unit includes: a second Bluetooth positioning module; the second Bluetooth location module is configured to communicate with the first Bluetooth location module; the vehicle-mounted assembly is configured to measure the distance from the first Bluetooth positioning module to the second Bluetooth positioning module through the communication between the second Bluetooth positioning module and the first Bluetooth positioning module; and according to the distance, determining the position of the first Bluetooth positioning module, and according to the position of the first Bluetooth positioning module, executing corresponding vehicle operation under the authority.

7. The vehicle key system according to claim 6,

the on-board unit further includes: a third Bluetooth positioning module and a fourth Bluetooth positioning module; the vehicle-mounted assembly is configured to measure distances from the first Bluetooth positioning module to the second Bluetooth positioning module, the third Bluetooth positioning module and the fourth Bluetooth positioning module through communication between the second Bluetooth positioning module, the third Bluetooth positioning module and the fourth Bluetooth positioning module and the first Bluetooth positioning module; and determining the position of the first Bluetooth positioning module according to the distance.

8. The vehicle key system according to claim 7,

the second Bluetooth positioning module is located on the left side of the vehicle, the third Bluetooth positioning module is located on the right side of the vehicle, and the fourth Bluetooth positioning module is located on the side of the trunk of the vehicle.

9. The vehicle key system of claim 6, wherein the second Bluetooth location module comprises:

a timing module configured to record a transmission time required for a bluetooth signal to be transmitted between the second bluetooth positioning module and the first bluetooth positioning module;

a calculating module configured to calculate a distance between the second Bluetooth positioning module and the first Bluetooth positioning module according to the transmission time and the speed of Bluetooth signal transmission.

10. The vehicle key system of claim 9, wherein the second bluetooth location module further comprises: a Bluetooth signal strength detection module configured to detect the strength of the Bluetooth signal transmitted by the first Bluetooth positioning module;

the calculation module is further configured to calculate a distance between the second bluetooth positioning module and the first bluetooth positioning module according to the strength of the bluetooth signal.

11. The vehicle key system of claim 10, wherein the calculation module is configured to set a distance calculated from the transmission time and a speed of bluetooth signal transmission as a first distance measurement; setting the distance calculated according to the intensity of the Bluetooth signal as a second distance measurement value; and performing a weighted average of the first distance measurement and the second distance measurement to obtain a distance calculation.