CN113345122A - ETC vehicle information correction method and system - Google Patents
ETC vehicle information correction method and system Download PDFInfo
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- CN113345122A CN113345122A CN202110449022.6A CN202110449022A CN113345122A CN 113345122 A CN113345122 A CN 113345122A CN 202110449022 A CN202110449022 A CN 202110449022A CN 113345122 A CN113345122 A CN 113345122A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
Abstract
The invention provides an ETC vehicle information correction method and system, wherein the method comprises the following steps: after a first type of Road Side Unit (RSU) is connected with an on-board unit (OBU) of a vehicle, acquiring vehicle information from the OBU, and sending the received vehicle information to a portal control device; the RSU of the first type receives an information processing instruction from the portal control device, and interacts with the OBU based on the vehicle OBU correction information to change the OBU vehicle information under the condition that the received information processing instruction contains the vehicle OBU correction information; and after the RSU of the first type confirms that the OBU is modified, releasing a communication link between the RSU and the OBU, and disconnecting the RSU from the OBU. The invention can modify the wrong vehicle information in the OBU under the condition of no sense of a user, and does not need the user to operate in person, thereby greatly improving the user experience, preventing errors possibly brought by the user operation, and lightening the burden of manual operation of hall operators.
Description
Technical Field
The invention relates to the technical field of transportation, in particular to an ETC vehicle information correction method and system.
Background
The Electronic Toll Collection (ETC) system is the most advanced road and bridge toll collection mode at present. The special short-range microwave communication between an on-board unit (such as an on-board electronic tag (OBU)) installed on a vehicle and a Road Side Unit (RSU) antenna on an ETC lane of a toll station is used for carrying out background settlement processing with a bank by utilizing a computer networking technology, so that the purpose that the vehicle can pay road and bridge fees through the road and bridge toll station without parking is achieved. The OBU is used as a communication repeater interacting with the DSRC microwave antenna and an information storage unit of a vehicle, an ETC card is inserted into the OBU, vehicle information is written in the OBU and the ETC card, and after the RSU antenna detects the OBU on a highway, the vehicle information in the OBU and the ETC card is read, the vehicle information and the driving path information are obtained, so that ETC vehicle charging information is calculated based on the obtained information, and fee deduction is carried out.
However, when writing user information and vehicle information into the OBU for two-shot delivery at a business office, there is a possibility that an error may exist in the written vehicle information, for example, information written into the OBU may exist in any one of information such as a license plate number, a vehicle color, a vehicle size, vehicle load/seat number information (5 seats, 7 seats, 8 seats, and the like), a vehicle type (a first-type passenger vehicle, a second-type passenger vehicle, … …, a sixth-type passenger vehicle, and the like), a user type (including a general vehicle, a public service vehicle, a military vehicle, and the like), and during subsequent vehicle boarding, an error in the OBU two-shot information may be found by a highway inspection system and the like through vehicle image capture and the like, and an ETC user is prompted to modify the OBU. Under the condition, the method for correcting the ETC second-sending OBU information error is that an ETC user carries out offline modification to an ETC business hall, or the OBU user with the Bluetooth function applies online modification through APP, small programs and the like. If the ETC user is unwilling to cooperate or unwilling to spend time to modify the vehicle information, the information of the two OBUs of the ETC is difficult to be modified, so that inaccurate or other problems occur in charging and the like.
How to timely modify the ETCOBU secondary information is a problem to be solved.
Disclosure of Invention
In view of the above, embodiments of the present invention provide an ETC vehicle information correction method and system to obviate or mitigate one or more of the disadvantages of the related art.
One aspect of the present invention provides a vehicle information correction method including the steps of:
after a first type of Road Side Unit (RSU) is connected with an on-board unit (OBU) of a vehicle, acquiring vehicle information from the OBU, and sending the received vehicle information to a portal control device;
the RSU of the first type receives an information processing instruction from the portal control device, and interacts with the OBU based on the vehicle OBU correction information to change the OBU vehicle information under the condition that the received information processing instruction contains the vehicle OBU correction information;
and after the RSU of the first type confirms that the OBU is modified, releasing a communication link between the RSU and the OBU, and disconnecting the RSU from the OBU.
In some embodiments of the present invention, said interacting with said OBU based on said vehicle OBU revision information to alter OBU vehicle information comprises: the RSU of the first type sends a first request to the OBU and receives a random number returned by the OBU based on the first request; the RSU of the first type obtains a message authentication code through encryption calculation by a PSAM card based on the received random number, and sends a vehicle information writing request carrying OBU correction information and the message authentication code to the OBU; and receiving a vehicle information write response from the OBU.
In some embodiments of the invention, the method further comprises: and in the case that the received information processing instruction contains an instruction for ending transaction, the RSU of the first type releases a communication link with the OBU and disconnects the connection with the OBU.
In some embodiments of the invention, prior to obtaining vehicle information from the OBU, the method further comprises: the RSU of the first type sends a Beacon Service Table (BST) frame, and receives a returned Vehicle Service Table (VST) frame from the OBU, wherein the VST frame contains OBU system information; and sending the OBU system information to the portal control device.
In some embodiments of the invention, the RSU of the first type acknowledges completion of an OBU modification upon receipt of a vehicle information write response from the OBU.
In some embodiments of the invention, the step of obtaining vehicle information from the OBU comprises: the RSU of the first type sends a vehicle information acquisition request to the OBU; and receiving the OBU vehicle information returned by the OBU, wherein the OBU vehicle information is sent in a ciphertext mode.
In some embodiments of the invention, the method further comprises: after receiving a vehicle information writing response from the OBU, sending a vehicle information acquisition request to the OBU to acquire vehicle information from the OBU; receiving vehicle information from the OBU, and sending a vehicle information writing state indication carrying the received vehicle information to the portal control device; and after receiving a response aiming at the vehicle information writing state indication from the portal control device, the RSU of the first type confirms that the modification of the OBU is completed.
In some embodiments of the invention, the vehicle information comprises vehicle information in an EF01 file of the OBU; the RSU of the first type is a billing RSU or a vehicle information modification specific RSU.
In another aspect of the present invention, a vehicle information correction system is provided, which includes a memory and a processor, wherein the memory stores computer instructions, and the processor is used for executing the computer instructions stored in the memory, and when the computer instructions are executed by the processor, the system realizes the steps of the method.
In another aspect of the present invention, a computer-readable storage medium is also provided, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the method as set forth above.
The vehicle information correction method and the vehicle information correction system can correct wrong vehicle information in the OBU under the condition of no sense of a user, and do not need the user to operate in person, so that the user experience is greatly improved, the error possibly brought by the user during operation is prevented, and the burden of manual operation of hall operators is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a flowchart illustrating an ETC vehicle information correction method according to an embodiment of the present invention.
Fig. 2 is a timing chart of the ETC vehicle information correction method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
The invention provides an ETC vehicle information correction method, which aims to solve the problems of poor user experience and low efficiency in the modification process when ETC label secondary-sending vehicle information is wrong in the prior art. As shown in fig. 1, an ETC vehicle information correction method according to an embodiment of the present invention includes the steps of:
in step S110, after the RSU of the first type is connected to the OBU of the vehicle, the vehicle information is acquired from the OBU, and the received vehicle information is sent to a gantry control apparatus (e.g., a gantry controller).
In the prior art, the RSU is typically used for charging deduction transactions. In the embodiment of the invention, the ETC expressway is also provided with the RSU which is specially used for modifying the vehicle information in the OBU, namely the RSU of the first type (the RSU special for modifying the vehicle information) and can be provided with one RSU special for modifying the vehicle information every several deduction transaction RSUs. In an alternative embodiment of the present invention, a toll RSU may also be used as the RSU that modifies the vehicle information. Hereinafter, the RSU refers to an RSU for correcting the OBU vehicle information, if not specifically stated.
In this embodiment of the present invention, the process of the RSU detecting the OBU and establishing a connection with the OBU of the vehicle may include:
step 1.1, RSU sends Beacon Service Table (BST) frame;
step 1.2, the OBU returns a Vehicle Service Table (VST) frame to the RSU based on the received BST frame, wherein the VST frame contains the OBU system information.
Steps 1.1 and 1.2 are mainly used for establishing a communication link between the RSU and the OBU, negotiating communication parameters and negotiating application parameters, and acquiring system information of the OBU, where the system information is generally stored in an EF01 file under an ESAM module root directory in the OBU.
The flow of communicating the link between the RSU and the OBU through the BST frame and the VST frame and obtaining the system information of the OBU is the same as the existing flow, and is not described herein again.
After the RSU obtains the OBU system information, the RSU may further read (acquire) the vehicle information in the OBU. As an example, the step of obtaining vehicle information from the OBU may comprise:
and 2.1, the RSU sends a vehicle information acquisition request to the OBU.
And 2.2, receiving the OBU vehicle information returned by the OBU through the response message.
In some embodiments of the present invention, the vehicle information acquisition request message in step 2.1 may be a getsecure request message, and the response message returned by the OBU may be, for example, getsecure response, and the OBU vehicle information carried in the message is preferably sent in a ciphertext manner.
And after the RSU acquires the vehicle information from the OBU, the RSU sends the received vehicle information to the portal control device. The portal control device can download and locally store OBU vehicle correction data from the background server, and the OBU vehicle correction data can comprise all OBU vehicle information data of vehicles needing to be corrected in a national range or a license plate range of a preset region (such as a license plate range of a province or a license plate range of a city). The portal control device can compare the currently received OBU vehicle information with the pre-stored OBU vehicle correction data, and if the OBU vehicle correction information corresponding to the currently received OBU vehicle information is found in the pre-stored OBU vehicle correction data, it is determined that the OBU vehicle information of the current vehicle needs to be corrected. And if the OBU vehicle correction information corresponding to the currently received OBU vehicle information cannot be found in the pre-stored OBU vehicle correction data, determining that the OBU vehicle information of the current vehicle does not need to be corrected. For example, the comparison between the received OBU vehicle information and the stored OBU vehicle correction data may be performed by comparing identification information such as a license plate number or user information, but the present invention is not limited thereto.
And if the portal control device determines that the OBU vehicle information of the current vehicle needs to be corrected, sending an information processing instruction containing vehicle OBU correction information to the RSU so as to instruct to correct the vehicle information in the OBU. As an example, a predefined C9 message may be utilized as an information processing instruction indicating a correction to the vehicle information in the OBU.
And if the portal control device determines that the OBU vehicle information of the current vehicle does not need to be corrected, sending an information processing instruction containing a transaction ending instruction to the RSU so as to instruct to release the communication with the OBU. As an example, a predefined C2 message may be utilized as an information processing instruction indicating an end transaction.
And step S120, the RSU receives an information processing instruction from the portal control device, and interacts with the OBU based on the vehicle OBU correction information to change the OBU vehicle information under the condition that the received information processing instruction contains the vehicle OBU correction information.
More specifically, if the portal control apparatus instructs to modify the vehicle information of the OBU, the OBU vehicle information may be modified by interacting with the OBU based on the vehicle OBU modification information by:
step 3.1 the RSU sends a first request (e.g. a transferchannel. request message) to the OBU.
Step 3.2 the RSU receives the random number returned by the OBU through a response (e.g. a transfer channel. response message) to the first request.
And 3.3, the RSU carries out encryption calculation by the PSAM card through an encryption algorithm based on the received random number to obtain an MAC (message authentication code), and sends a vehicle information writing request carrying OBU correction information and the message authentication code to the OBU.
And after receiving the OBU correction information and the message identification code, the OBU verifies the message based on the identification code, modifies the vehicle information in the OBU based on the OBU correction information after the verification is passed, and sends a response aiming at the vehicle information writing request to the RSU so as to indicate that the OBU vehicle information is successfully corrected. The RSU will thus receive a vehicle information write response from the OBU.
In another embodiment of the present invention, in case that the information processing instruction received by the RSU includes an instruction to end the transaction, the RSU releases the communication link with the OBU, and disconnects the communication link with the OBU.
And step S130, after the RSU of the first type confirms that the OBU is modified, releasing a communication link with the OBU, and disconnecting the communication link with the OBU.
In an embodiment of the present invention, the RSU confirms that the modification of the OBU is completed after receiving the vehicle information write response from the OBU.
In another embodiment of the present invention, the information processing instruction transmitted from the gantry control apparatus to the RSU may include a vehicle information read-back instruction in addition to the vehicle OBU correction information, in which case the ETC vehicle information correction of the present invention further includes the steps of:
and 4.1, after receiving the vehicle information writing response from the OBU, the RSU continuously sends a vehicle information acquisition request to the OBU so as to acquire the vehicle information from the OBU again.
And 4.2, receiving the OBU vehicle information returned by the OBU through the response message again.
Here, step 4.1 and step 4.2 may be the same as step 2.1 and step 2.2 described above, and are not described herein again.
And 4.3, the RSU sends a vehicle information writing state indication carrying the vehicle information received again to the portal control device.
In step 4.3, the vehicle information carried in the vehicle information writing state indication may be the vehicle information which is successfully modified or the vehicle information which is not successfully modified; and if the modification is successful, the portal control device deletes the OBU correction information of the corresponding vehicle from the currently stored OBU vehicle correction data and updates the OBU correction information to the background server in time. If the modification is unsuccessful, the portal control device continuously keeps the OBU correction information of the corresponding vehicle in the currently stored OBU vehicle correction data. As a response to the vehicle information writing status indication, the mast control apparatus may return a response instruction, which may be, for example, a C1 instruction, or a C2 instruction, to the RSU.
Step 4.4 the RSU receives a response from the mast control means to the vehicle information write status indication.
The RSU receives a response to the vehicle information writing status indication from the gantry control apparatus, and confirms that the OBU modification is completed.
Based on the response instruction of the portal control device, the RSU releases the link and disconnects the communication link with the OBU.
In some embodiments of the present invention, after the RSU receives a Vehicle Service Table (VST) frame containing the OBU system information returned by the OBU, the RSU may send the OBU system information to the portal control apparatus through a message (e.g., a B3 message). Accordingly, the portal control apparatus may return a C1 instruction (continue transaction instruction) indicating to continue the transaction to the RSU.
Based on the ETC vehicle information correction method, the modification of the ETC vehicle information in the OBU can be automatically completed through the communication established between the specific RSU and the OBU, and a user does not need to perform any operation, so that the purpose of improving the user experience is achieved.
In another embodiment of the present invention, after the vehicle information in the OBU is modified, the background server may be used to send a vehicle information modification prompt message to the user side corresponding to the vehicle user, so as to inform the user that the vehicle information is modified.
Fig. 2 is a timing chart of the ETC vehicle information correction method according to an embodiment of the present invention, and as shown in fig. 2, the ETC vehicle information correction method according to the embodiment includes the following steps:
step 1-step 2: and (5) initializing the flow.
In step 1, the portal controller sends an initialization command C0 to the RSU to initialize the RSU.
The RSU serves as a server side, monitors a communication port after being started, waits for connection of the portal controller, the portal controller initiates a TCP connection request, and after the TCP connection is established, the portal controller can start communication of the RSU. The door frame controller actively sends an initialization command C0 to set initialization parameters (such as power, lane mode, station-crossing information processing mode, etc.) so as to initialize the RSU.
In step 2, after receiving the initialization command, if the initialization is successful, the RSU returns to the B0 frame as a response command.
After the RSU is connected with the portal controller, the RSU can send heartbeat to the portal controller at regular time to inform the portal controller that the TCP is in a good connection state and carries the running state information of the RSU.
Step 3-4: and establishing a communication link between the RSU and the OBU.
In step 3, the RSU sends a Beacon Service Table (BST) frame.
In step 4, the OBU receives the BST frame and returns a Vehicle Service Table (VST) frame to the RSU, wherein the VST frame contains the OBU system information.
Step 5-step 6: and transmitting the OBU system information frame.
At step 5, the RSU sends a cart-unit info frame (frame B2) to the gantry controller, which carries the OBU system information.
In step 6, the portal controller receives the B2 frame and returns a C1 command to the RSU carrying an indication to continue subsequent operations, the C1 command indicating that the RSU is to be acknowledged and that continued processing is required of the OBU to indicate to the RSU to perform further operations to process the OBU. In this step, if the OBU itself is found not to be in the local correction data, it is not necessary to read the vehicle information in the tag, and the link may be disconnected directly through the command of C2. If the OBU is found to have been processed within a certain time (typically set to 3 minutes), then to avoid repeated processing, it is sufficient to send a C2 command to disconnect the link.
And 7-8, obtaining the OBU vehicle information.
In step 7, the RSU sends getsecure. request (getsecure. rq) to the OBU.
And 8, after receiving the GetSecure.Rq, the OBU returns a response message GetSecure.Rq (GetSecure.response), and the OBU vehicle information in the form of the ciphertext carried in the message.
Step 9-step 10: and an OBU vehicle information correction confirmation flow, namely confirming whether the secondary information in the OBU needs to be corrected or not.
At step 9, the RSU sends a vehicle information frame (e.g., B3 frame) to the portal controller, carrying the vehicle information from the OBU.
In step 10, after the portal controller acquires the vehicle information in the OBU, the portal controller compares the vehicle information with pre-stored OBU vehicle correction data to determine whether the vehicle information in the OBU needs to be corrected.
If correction is required, the portal controller may send an acknowledgement instruction (e.g., a C9 instruction) to the RSU indicating that the vehicle information in the OBU is modified to indicate that the new OBU secondary information is to be written to the card of the OBU, with the C9 instruction carrying the correct OBU vehicle information (secondary information). In addition, the C9 instruction may also carry a read-back instruction, if a read-back instruction is carried, steps 15-18 are included in the timing diagram, and if a read-back instruction is not carried, steps 15-16 may be omitted.
If no modification is required, the portal controller may send an acknowledgement instruction (e.g., a C2 instruction) to the RSU indicating that the link is released, indicating that the RSU is finished with the OBU.
Step 11-step 14: and modifying the flow of the OBU vehicle information (secondary information).
At step 11, the RSU sends a request message, such as tasferchannel.rq, to the OBU to request acquisition of a random number.
The OBU returns a response message carrying a random number, such as tasferchannel.
In step 13, the RSU calculates a Message Authentication Code (MAC) using the PSAM card based on the random number obtained from the OBU, and transmits correct OBU vehicle information and MAC to the OBU through a tanner channel.
In step 14, the OBU receives the taskfannel.rq, verifies the MAC, writes the vehicle information after the verification is passed, and writes the correct vehicle information into the vehicle information file of the OBU. After the vehicle information is written, the OBU returns a response message TansferChannel.
Step 15-step 16, the OBU vehicle information acquisition process. If the reply command is carried in the reply command C9 of step 10, the vehicle information is again obtained from the OBU, via steps 15-16. This step 15-16 may be identical to the previous step 7-8 and will not be described in further detail herein.
And 17-18, vehicle information writing state confirmation step.
At step 17, the RSU sends a vehicle information write status command (e.g., B9 command) to the portal controller for reporting the status of writing vehicle information, where the command may carry the newly written vehicle information obtained from the OBU. If the aforementioned C9 command carries a read-back command, the B9 command needs to carry newly written vehicle information.
In step 18, the OBU responds to the B9 command, and if the B9 command carries the newly written vehicle information, the newly written vehicle information may be compared with the OBU vehicle correction data stored in advance to determine whether the correction is successful, and if the correction is successful, the vehicle data corresponding to the current OBU in the OBU vehicle correction data is deleted. And if the correction is unsuccessful, not deleting the vehicle data corresponding to the current OBU in the OBU vehicle correction data so as to enable the subsequent RSU to further perform the processing of correcting the vehicle information in the OBU. At the same time, the portal controller returns an instruction to the RSU carrying an indication to release the link (e.g., an instruction to end the transaction (e.g., a C2 instruction).
If the newly written vehicle information is carried in the B9 command, the mast controller may return a C1 or C2 command directly to the RSU.
And 19, the RSU sends a link release instruction to disconnect the communication connection with the OBU.
The ETC vehicle information correction method of the embodiment can be used for correcting wrong vehicle information in the OBU under the condition that a user feels no, the user does not need to operate in person, the user experience is greatly improved, errors possibly caused by user operation are prevented, and the burden of manual operation of hall operators is relieved.
In accordance with the foregoing method, embodiments of the present invention also provide an ETC vehicle information correction system, which includes a memory having stored therein computer instructions and a processor for executing the computer instructions stored in the memory, wherein when the computer instructions are executed by the processor, the system implements the steps of the foregoing method.
The present disclosure also relates to storage media, which may be tangible storage media such as optical disks, U-disks, floppy disks, hard disks, etc., on which computer program code may be stored, which when executed may implement various embodiments of the method of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative components, systems, and methods described in connection with the embodiments disclosed herein may be implemented as hardware, software, or combinations of both. Whether this is done in hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments in the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ETC vehicle information correction method characterized by comprising the steps of:
after a first type of Road Side Unit (RSU) is connected with an on-board unit (OBU) of a vehicle, acquiring vehicle information from the OBU, and sending the received vehicle information to a portal control device;
the RSU of the first type receives an information processing instruction from the portal control device, and interacts with the OBU based on the vehicle OBU correction information to change the OBU vehicle information under the condition that the received information processing instruction contains the vehicle OBU correction information;
and after the RSU of the first type confirms that the OBU is modified, releasing a communication link between the RSU and the OBU, and disconnecting the RSU from the OBU.
2. The method of claim 1, wherein interacting with the OBU based on the vehicle OBU revision information to alter OBU vehicle information comprises:
the RSU of the first type sends a first request to the OBU and receives a random number returned by the OBU through a response to the first request;
the RSU of the first type obtains a message authentication code through encryption calculation by a PSAM card based on the received random number, and sends a vehicle information writing request carrying OBU correction information and the message authentication code to the OBU;
and receiving a vehicle information write response from the OBU.
3. The method of claim 1, further comprising:
and in the case that the received information processing instruction contains an instruction for ending transaction, the RSU of the first type releases a communication link with the OBU and disconnects the connection with the OBU.
4. The method of claim 1, wherein the step of obtaining vehicle information from the OBU comprises:
the RSU of the first type sends a vehicle information acquisition request to the OBU;
and receiving the OBU vehicle information returned by the OBU, wherein the OBU vehicle information is sent in a ciphertext mode.
5. The method of claim 1, wherein prior to obtaining vehicle information from the OBU, the method further comprises:
the RSU of the first type sends a Beacon Service Table (BST) frame, and receives a returned Vehicle Service Table (VST) frame from the OBU, wherein the VST frame contains OBU system information;
and sending the OBU system information to the portal control device.
6. The method of claim 2, wherein the first type of RSU acknowledges completion of an OBU modification upon receiving a vehicle information write response from the OBU.
7. The method of claim 2, further comprising:
after receiving a vehicle information writing response from the OBU, sending a vehicle information acquisition request to the OBU to acquire vehicle information from the OBU;
receiving vehicle information from the OBU, and sending a vehicle information writing state indication carrying the received vehicle information to the portal control device;
and after receiving a response aiming at the vehicle information writing state indication from the portal control device, the RSU of the first type confirms that the modification of the OBU is completed.
8. The method of claim 1,
the vehicle information comprises vehicle information in an EF01 file of the OBU;
the RSU of the first type is a billing RSU or a vehicle information modification specific RSU.
9. An ETC vehicle information correction system comprising a memory having stored therein computer instructions and a processor for executing the computer instructions stored in the memory, the system implementing the steps of the method according to any one of claims 1 to 8 when the computer instructions are executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.
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| CN113345122B (en) | 2022-10-04 |
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