TWI509570B - Vehicle unit OBU and vehicle binding method and system - Google Patents

Description

Method and system for binding vehicle unit OBU and vehicle

The invention belongs to the field of intelligent transportation technology, and in particular relates to a method and system for binding an onboard unit OBU and a vehicle.

The emergence of the ETC system (Electric Toll Collect) has changed the traditional way of manual charging, so that when the vehicle passes through the toll booth of a highway, bridge or tunnel, the payment process can be completed without parking, which greatly improves the process. The utilization of roads has increased the traffic speed of vehicles, reduced traffic congestion, and reduced carbon emissions to a certain extent. At the same time, it also reduces the labor demand of the toll station and reduces the operating cost of the toll lane. Non-stop charging methods are used by more and more countries and cities.

The ETC electronic non-stop charging system consists of a lane controller, a roadside unit RSU and an onboard unit OBU. The RSU (Road Side Unit) is an electronic toll collection device suspended in a toll lane. The controller, the security module, The microwave communication module and the power supply module are composed.

CAN (Controller Area Network) is developed by the German company BOSCH, which is famous for the research and development and production of automotive electronics. It has finally become an international standard and is one of the most widely used on-site busbars in the world. In North America and Western Europe, the CAN bus protocol has become the standard bus for automotive computer control systems and embedded industrial control LANs.

The On Board Unit (OBU) is a device that is installed in a vehicle to collect vehicle tolls when the vehicle passes through a toll road (or road and bridge). The toll collection fee is related to the vehicle type. The charging standard for trucks and buses is much higher than that of ordinary mini-cars. In order to avoid installation in small The vehicle-mounted OBU on the vehicle is moved to the cart and the vicious escape phenomenon occurs. The on-board unit OBU and the vehicle must have a binding device.

The existing technical solution: the traditional binding device is to install a mechanical tamper switch on the vehicle unit OBU, and the working principle is: the vehicle unit OBU is glued to the windshield with a strong adhesive, and the tamper switch at this time It is pressed and activated by an authorized professional distribution device, and this state is saved by the onboard unit OBU. When the onboard unit OBU is forcibly removed from the windshield, the tamper switch is bounced, and the onboard unit OBU is automatically sensed and saved in a disassembled state. At this time, the onboard unit OBU cannot be normally operated on any vehicle.

The drawback of mechanical tampering is that the vehicle unit OBU must be bonded to the vehicle, and the user is not allowed to install and disassemble it. It cannot meet the requirements of being easy to install, disassemble and be able to be bound to the vehicle. For example, when the onboard unit OBU and GPS are integrated, the user may move from the vehicle to another vehicle without the function of the onboard unit OBU. Just need to navigate.

In view of the deficiencies in the prior art, it is an object of the present invention to provide a method and system for binding an onboard unit OBU to a vehicle. The method and system can realize the binding function of the onboard unit OBU and the vehicle, and can make the onboard unit OBU detachable.

In order to achieve the above objective, the technical solution adopted by the present invention is: a method for binding an onboard unit OBU and a vehicle, comprising the steps of: setting a wireless communication module outside the OBU for acquiring and transmitting unique information of the vehicle, The wireless communication module and the onboard unit OBU are separated; the onboard unit OBU communicates with the wireless communication module outside the onboard unit OBU, and when the two are bound, the onboard unit OBU is external to the onboard unit OBU. The wireless communication module obtains the unique information of the vehicle and compares whether it is consistent with the unique information of the stored vehicle. If the transaction is consistently allowed, the transaction is stopped if it is inconsistent.

Further, the unique information of the vehicle is the engine number of the vehicle or the frame number of the vehicle.

Further, the method specifically includes the following steps: installing a wireless communication module outside the vehicle unit OBU on the bound vehicle, powering on the wireless communication module, and the wireless communication module reads the vehicle through the CAN bus interface interface. The only information; the onboard unit OBU is installed on the bound vehicle, and the issuing device sends a safety certification command to the onboard unit OBU; the onboard unit OBU receives the safety certification command, and then determines whether the authentication is passed, and if it fails the authentication, the abnormality ends. If the authentication is passed, the wireless communication module outside the OBU of the vehicle unit is sent to read the unique information of the vehicle; the wireless communication module outside the OBU of the vehicle unit receives the command, and sends the unique information of the vehicle to the onboard unit OBU; the vehicle unit OBU receives the vehicle The only information after safe storage, the entire process of the vehicle unit OBU and vehicle binding ends.

Further, after the initial legal binding is completed, a one-to-one binding relationship is established between the onboard unit OBU and the vehicle. When the onboard unit OBU passes through the charging area, the onboard unit OBU first receives the roadside unit RSU. BST signal (BST is the abbreviation of English Beacon Service Table, ie beacon service table), then the vehicle unit OBU receives the BST signal, and sends a command to read the engine number to the wireless communication module outside the vehicle unit OBU, and the vehicle unit OBU The wireless communication module receives the command, and sends the engine number of the vehicle to the onboard unit OBU. The vehicle unit OBU reads the engine number of the vehicle from the wireless communication module outside the vehicle unit OBU, and the engine stored in the safety storage module. Number comparison, if the two are consistent, Then, the onboard unit OBU replies to the roadside unit RSU and requests to continue the transaction; if the two are inconsistent, the onboard unit OBU replies to the roadside unit RSU and requests to terminate the transaction.

A system for binding an onboard unit OBU to a vehicle, comprising: an onboard unit OBU for binding to a vehicle and identifying it in an ETC system; and a wireless communication module separate from the onboard unit OBU for acquiring And send the vehicle unique information.

Further, the onboard unit OBU (1) includes a wireless transceiver unit (11), a control unit (12), a secure storage unit (13), a payment card, a microwave communication unit, and a power supply unit.

The wireless transceiver unit (11) of the onboard unit OBU (1) is configured to establish wireless communication with the wireless transceiver unit (21) in the wireless communication module (2) to obtain unique information of the vehicle and provide the vehicle. The unit OBU and the vehicle-bound wireless channel; the control unit (12) of the onboard unit OBU (1) is the central processor of the onboard unit OBU for controlling the wireless transceiver unit (11) and the security of the onboard unit OBU (1) The storage unit (13); the secure storage unit (13) is configured to store the key related to the issue and transaction of the onboard unit OBU, the system information file and the transaction information file, and also store the engine number information of the vehicle, and ensure that the information is not After the security certification, it will not be arbitrarily tampered with; the payment card is used to store the key of the secure payment, and the high-speed toll is paid after the roadside unit RSU is securely authenticated; the microwave communication unit is used to implement the onboard unit OBU and the roadside unit RSU. Wireless communication, including wireless transmitting part and wireless receiving part, The data sent by the roadside unit RSU and the receiving roadside unit RSU is a wireless channel for the issuance and transaction of the onboard unit OBU; the power supply unit is used for supplying power to the device, including a filter circuit, a multi-channel voltage regulator circuit, and Power management circuit.

Further, the wireless communication module (2) includes a wireless transceiver unit (21), a control unit (22), and a CAN bus interface (23); wherein the wireless communication unit of the wireless communication module (2) (21) for establishing wireless communication with the wireless transceiver unit (11) in the onboard unit OBU (1), receiving the command of the wireless transceiver unit (11) of the onboard unit OBU (1), and transmitting the vehicle uniquely according to the instruction requirements. Information, providing the vehicle unit OBU (1) and the vehicle-bound wireless channel; the wireless communication module (2) control unit (22) is the central processing unit of the wireless communication module (2) for reading and recognizing the CAN Vehicle unique identification information on the busbar, and information for controlling the wireless transceiver unit (21) to receive at least the wireless transceiver unit (11) of the onboard unit OBU(1) and the wireless transceiver unit for transmitting the onboard unit OBU(1) (11) Data; CAN bus interface (23) is used to: provide physical connection with the CAN bus of the vehicle.

The effect of the invention is that: the method of the invention can realize the binding function of the on-board unit OBU and the vehicle, and can make the on-board unit OBU detachable, and meet the equipment installation, disassembly and carrying, and can realize Confirmation with the legality of the vehicle makes it possible to integrate the onboard unit OBU application into the mobile device.

1‧‧‧Vehicle unit OBU

11‧‧‧Wireless transceiver unit

12‧‧‧Control unit

13‧‧‧Safe storage unit

2‧‧‧Wireless communication module

21‧‧‧Wireless transceiver unit

22‧‧‧Control unit

23‧‧‧CAN bus interface

S11~S13, S21, S221~S222, S23, S241~S242, S25~S28, S31~S39‧‧

1 is a structural diagram of the system in the specific implementation of the present invention; and FIG. 2 is a flowchart of the method in the specific implementation of the present invention; 3 is a flow diagram of a transaction using the method and system of the present invention.

The invention is further described below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1, a system for binding an in-vehicle device OBU to a vehicle includes the following means: an onboard unit OBU1 for binding with a vehicle and identifying it in an ETC system, and for acquiring and transmitting a unique vehicle The wireless communication module 2 of the information, wherein the wireless communication module 2 and the onboard unit OBU1 are separated.

The unique information of the vehicle may be the engine number of the vehicle, or the frame number or other information of the vehicle. In this embodiment, the vehicle unique information is the engine number of the vehicle.

The onboard unit OBU1 includes a wireless transceiver unit 11, a control unit 12, a secure storage unit 13 and a payment card, a microwave communication unit and a power supply unit not shown in the figure; wherein the wireless transceiver unit of the onboard unit OBU1 11 is used to establish wireless communication with the wireless transceiver unit 21 in the wireless communication module 2 to obtain engine number information, and provide a wireless channel for the vehicle unit OBU1 and the vehicle binding; the control unit 12 of the vehicle unit OBU1 is the vehicle unit The central processing unit of the OBU1 is used for controlling the wireless transceiver unit 11 and the secure storage unit 13 and other modules of the onboard unit OBU1, including the code of the issuance process and transaction flow of the onboard unit OBU1; and the secure storage unit 13 for storage and onboard The unit OBU1 issues, the transaction-related key, the system information file and the transaction information file, and also stores the engine number information of the vehicle, and guarantees that this information will not be tampered with without security certification; the payment is not shown in the figure. The card is used to store the key of the secure payment, and after the roadside unit RSU is securely authenticated, the high-speed toll is paid; The microwave communication unit is configured to implement wireless communication between the onboard unit OBU1 and the roadside unit RSU, and includes a wireless transmitting part and a wireless receiving part, respectively for transmitting data to the roadside unit RSU and the receiving roadside unit RSU for transmitting the information, which is a vehicle. A wireless channel for the issuance and transaction of the unit OBU1; a power supply unit for supplying power to the onboard unit OBU1, including a filter circuit, a multi-channel voltage regulator circuit, and a power management circuit.

The wireless communication module 2 includes a wireless transceiver unit 21, a control unit 22, and a CAN bus interface 23; wherein the wireless transceiver unit 21 of the wireless communication module 2 is used for a wireless transceiver unit in the onboard unit OBU1. Establish wireless communication between 11 and receive the command of the wireless transceiver unit 11 of the vehicle unit OBU1, and send information according to the command requirements, such as engine number information, provide the wireless channel of the vehicle unit OBU1 and the vehicle binding; control of the wireless communication module 2 The unit 22 is a central processing unit of the wireless communication module 2, and is configured to read and recognize the unique identification information of the vehicle on the CAN bus, and to control the wireless transceiver unit 21 to receive at least the data of the wireless transceiver unit 11 of the onboard unit OBU1. And the wireless transceiver unit 11 data sent to the onboard unit OBU1; the CAN bus interface interface 23 is used to provide a physical connection between the wireless communication module 2 and the CAN bus of the vehicle.

In this embodiment, the wireless transceiver unit 11 in the in-vehicle unit OBU1 can perform wireless communication with the wireless transceiver unit 21 in the wireless communication module 2. When the two are required to be bound, the wireless communication module 11 in the onboard unit OBU1 is The wireless communication module 2 obtains the unique information of the vehicle and compares whether it is consistent with the unique information of the vehicle stored in the secure storage unit 13 in the onboard unit OBU1. If it is consistent, the transaction is allowed, and if not, the transaction is stopped.

The wireless communication module 2 is connected to the CAN busbar of the vehicle through the CAN bus interface 23, and can read the engine of the vehicle from the CAN busbar. No., and as the only information of the vehicle, the wireless communication module 2 will obtain the unique information from the CAN busbar every time the power is turned on, and the engine obtained from the busbar when it is moved from the car to the b car. The numbering also changes, thereby realizing the binding function of the wireless communication module 2 and the automobile. The working principle is as follows: the control unit 22 in the wireless communication module 2 periodically reads the data on the CAN bus, and The data is parsed, the engine number information is extracted, and saved to the inside of the control unit 22. The control unit 22 receives the command from the wireless transceiving unit 21, and if it is requesting to transmit the engine number command, transmits the engine number to the in-vehicle unit OBU1 via the radio transceiving unit 21.

How is the unique information of the vehicle in the onboard unit OBU obtained and stored safely? First, the initial installation of the onboard unit OBU is carried out at a designated installation point of the toll road operator, and secondly, it is carried out using a dedicated distribution device. The distribution device and the onboard unit OBU are securely authenticated before they can be bound. The unique information security of the vehicle is stored in the secure storage unit 13 in the onboard unit OBU.

As shown in FIG. 2, a specific implementation manner of a method for binding an onboard unit OBU and a vehicle includes the following steps: setting a wireless communication module outside the OBU for acquiring and transmitting unique information of the vehicle, the module and The onboard unit OBU is separated; the onboard unit OBU communicates with the wireless communication module outside the onboard unit OBU. When the two units need to be bound, the onboard unit OBU obtains the unique information of the vehicle from the wireless communication module outside the onboard unit OBU. And compare whether it is consistent with the unique information of the stored vehicle, if it is consistent, the transaction is allowed, and if it is inconsistent, the transaction is stopped.

The wireless communication module outside the OBU of the vehicle unit is installed on the bound vehicle S11, and the wireless communication module is powered on and the S12 is started. The wireless communication module reads the engine number S13 through the CAN bus interface interface; and installs the onboard unit OBU in the Bounded vehicle on S21, car single The issuing device of the meta-OBU sends a security authentication command S221 to the on-board unit OBU; the in-vehicle unit OBU receives the security authentication command S222, and then determines whether the authentication passes through S23, and if the authentication fails, the abnormality ends S241, and if the authentication passes, the vehicle-mounted unit OBU The wireless communication module sends an instruction to read the engine number S242; the wireless transceiver unit in the wireless communication module outside the vehicle unit OBU receives the command S25, and sends the engine number S26 to the onboard unit OBU; the onboard unit OBU receives the engine number and is safe. The entire flow of the storage S27, the onboard unit OBU and the vehicle binding ends S28.

As shown in FIG. 3, after the initial legal binding is completed, a one-to-one binding relationship is established between the onboard unit OBU and the vehicle. When the onboard unit OBU passes through the charging area, the onboard unit OBU first receives the roadside unit. The BST (Beacon Service Table) signal S31 sent by the RSU, and then the vehicle unit OBU receives the BST signal S32, and sends an instruction S33 for reading the engine number to the wireless communication module outside the vehicle unit OBU, the onboard unit OBU The external wireless communication module receives the command S34, and sends the vehicle engine number S35 to the vehicle unit OBU. The vehicle unit OBU reads the engine number S36 of the vehicle from the wireless communication module outside the vehicle unit OBU, and stores it in the secure storage mode. The pre-stored engine number comparison S37 in the group, if the two are consistent, the onboard unit OBU returns to the roadside unit RSU, requesting to continue the transaction S39; if the two are inconsistent, the onboard unit OBU returns to the roadside unit RSU, requesting to terminate the transaction S38.

It should be understood by those skilled in the art that the present invention is not limited to the embodiments of the present invention. Other embodiments of the present invention will be made by those skilled in the art in the light of the technical scope of the present invention. The scope of the present invention is defined by the claims and their equivalents.

1‧‧‧Vehicle unit OBU

11‧‧‧Wireless transceiver unit

12‧‧‧Control unit

13‧‧‧Safe storage unit

2‧‧‧Wireless communication module

21‧‧‧Wireless transceiver unit

22‧‧‧Control unit

23‧‧‧CAN bus interface

Claims (10)

A method for binding an onboard unit OBU and a vehicle, comprising the steps of: mounting an onboard unit OBU on a bound vehicle, wherein the onboard unit OBU is configured to enable the ETC system to identify the onboard unit OBU; The wireless communication module outside the vehicle unit OBU is separately mounted on the vehicle, wherein the wireless communication module is connected to the CAN bus of the vehicle, and the vehicle unique information of the vehicle can be read from the CAN bus of the vehicle. And transmitting the unique information of the vehicle to the onboard unit OBU by wireless; and the onboard unit OBU communicates with the wireless communication module outside the onboard unit OBU, wherein when the two are bound, the onboard unit OBU is The wireless communication module outside the OBU of the vehicle unit obtains the unique information of the vehicle, and compares whether it is consistent with the unique information of the stored vehicle. If the vehicle is consistent, the transaction is allowed, and if not, the transaction is stopped. A method of binding an onboard unit OBU and a vehicle according to claim 1, wherein the vehicle unique information is an engine number of the vehicle. A method of binding an onboard unit OBU and a vehicle according to claim 1, wherein the vehicle unique information is a frame number of the vehicle. The method for binding the vehicle unit OBU and the vehicle according to claim 2 or 3, wherein the method comprises the following steps: powering on the wireless communication module, and the wireless communication module reads the unique vehicle through the CAN bus interface interface. The issuing device sends a security authentication command to the onboard unit OBU; the onboard unit OBU receives the security authentication command, and then determines whether the authentication is passed. If the authentication fails, the abnormal end is ended. If the authentication is passed, the issuing unit is outside the OBU. The wireless communication module sends an instruction for reading unique information of the vehicle; The wireless communication module outside the onboard unit OBU receives the instruction for reading the unique information of the vehicle, and sends the vehicle unique information to the onboard unit OBU; the onboard unit OBU receives the unique information of the vehicle and stores it securely, the onboard unit The entire process of binding the OBU to the vehicle ends. The method of binding the onboard unit OBU and the vehicle according to claim 4, wherein after the initial legal binding is completed, a one-to-one binding relationship is established between the onboard unit OBU and the vehicle, when the onboard unit is When the OBU passes through the charging area, the in-vehicle unit OBU first receives the BST signal sent by the roadside unit RSU; the in-vehicle unit OBU receives the BST signal, and sends the reading to the wireless communication module outside the in-vehicle unit OBU for reading the vehicle. The instruction of the information; the wireless communication module outside the OBU of the onboard unit receives the instruction for the unique information of the vehicle, and transmits the unique information of the vehicle to the in-vehicle device; the onboard unit OBU is outside the onboard unit OBU The wireless communication module reads the unique information of the vehicle of the vehicle, and compares with the unique information of the vehicle stored in the secure storage module. If the two are consistent, the in-vehicle device replies to the roadside unit RSU and requests to continue the transaction. If the two are inconsistent, the in-vehicle device replies to the roadside unit RSU and requests to terminate the transaction. A system for attaching an onboard unit OBU to a vehicle, comprising: an onboard unit OBU (1) for being placed on a bound vehicle to be bound to the vehicle and for causing the ETC system to identify the onboard unit OBU And a wireless communication module (2) for being disposed on the vehicle separately from the onboard unit OBU (1), wherein the wireless communication module (2) is connected to the CAN bus of the vehicle, capable of The vehicle's CAN busbar reads the vehicle's unique information on the vehicle and wirelessly transmits the vehicle's unique information to the onboard unit OBU(1). The vehicle-mounted unit OBU and the vehicle-bound system of claim 6, wherein the vehicle unique information is the frame number of the vehicle. The vehicle-mounted unit OBU and the vehicle-bound system of claim 6, wherein the vehicle unique information is an engine number of the vehicle. The vehicle-mounted unit OBU and the vehicle-bound system as claimed in claim 7 or 8, wherein the on-board unit OBU (1) comprises a wireless transceiver unit (11), a control unit (12), a secure storage unit (13), and a payment card. a microwave communication unit and a power supply unit; wherein the wireless transceiver unit (11) of the onboard unit OBU (1) is configured to establish wireless communication with the wireless transceiver unit (21) in the wireless communication module (2), so that Obtaining the unique information of the vehicle, providing the vehicle unit OBU and the wireless channel bound to the vehicle; the control unit (12) of the onboard unit OBU (1) is a central processor of the onboard unit OBU (1), Controlling the wireless transceiver unit (11) of the onboard unit OBU (1) and the secure storage unit (13); the secure storage unit (13) for storing gold related to the issuance and transaction of the onboard unit OBU (1) The key, the system information file and the transaction information file also store the unique information of the vehicle of the vehicle, and ensure that the information is not arbitrarily tampered with without security authentication; the payment card is used to store the key of the secure payment. After the roadside unit RSU is securely certified, pay the high-speed toll The microwave communication unit is configured to implement wireless communication between the onboard unit OBU (1) and the roadside unit RSU, and includes a wireless transmitting portion and a wireless receiving portion for respectively transmitting data to the roadside unit RSU and receiving the The information sent by the roadside unit RSU is the wireless channel for the issuance and transaction of the onboard unit OBU; The power supply unit is configured to provide power supply for the onboard unit OBU (1), including a filter circuit, a multi-channel voltage regulator circuit, and a power management circuit. The vehicle-mounted unit OBU and the vehicle-bound system according to any one of claims 6 to 8, wherein the wireless communication module (2) comprises a wireless transceiver unit (21), a control unit (22), and a CAN bus interface. (23); wherein the wireless transceiver unit (21) of the wireless communication module (2) is configured to establish wireless communication with the wireless transceiver unit (11) in the onboard unit OBU (1), and receive the onboard unit OBU (1) an instruction of the wireless transceiver unit (11), and transmitting vehicle unique information according to the instruction, providing the vehicle unit OBU(1) and the wireless channel bound to the vehicle; the wireless communication module (2) The control unit (22) is a central processing unit of the wireless communication module (2) for reading and identifying the unique information of the vehicle on the CAN bus, and for controlling the wireless of the wireless communication module (2) The transceiver unit (21) receives at least the data of the wireless transceiver unit (11) of the onboard unit OBU (1) and the wireless transceiver unit (11) data sent to the onboard unit OBU (1); the CAN bus interface interface (23) for: providing a physical connection with the CAN bus.