CN110782348A - Motorcade ETC payment information processing system and method based on block chain - Google Patents

Abstract

The invention belongs to the technical field of road charging or congestion charging devices for vehicles and vehicle owners, and discloses a block chain-based fleet ETC payment information processing system and method, comprising: a registration module for registering the leading vehicle and the trailing vehicle, and simultaneously generating Label; Departure module is used for the first car or tail car to apply for leaving the fleet; ETC payment module is used for the fleet to pay ETC fees for transactions; the clearing module is used for each node of the vehicle account to initiate a request to the smart contract that stores the virtual currency of each vehicle account to achieve Recharge and withdrawal of virtual currency, exchange rate conversion between virtual currency and real currency; ETC system blockchain: including several nodes and smart contracts; used to provide a node interaction platform for running smart contracts. The invention utilizes the open and trustless feature of the block chain, and solves the problem that the team members complete the unified payment and quickly pass through the ETC toll station under the condition of mutual distrust.

Description

A blockchain-based fleet ETC payment information processing system and method

technical field

The invention belongs to the technical field of road charging or congestion charging devices for vehicles and vehicle owners, and in particular relates to a block chain-based fleet ETC payment information processing system and method.

Background technique

At present, the existing technologies commonly used in the industry are as follows:

ETC is an electronic automatic toll collection system for highways, bridges and tunnels that is being developed and promoted internationally. This technology has a long history of development abroad, and the electronic toll collection systems in many countries and regions such as the United States and Europe have been partially networked and gradually formed economies of scale. my country's highway network charging method, which uses IC card and magnetic card as the medium and adopts manual charging method, is undoubtedly also affected by this trend.

At present, the use of ETC is through the dedicated short-range microwave communication between the vehicle-mounted electronic tag installed on the windshield of the vehicle and the microwave antenna on the ETC lane of the toll station. The purpose of paying road and bridge tolls through road and bridge toll stations without parking. As of October 2018, the utilization rate of ETC in most provinces in China is more than half, and some provinces are less than 30%.

Blockchain is a new popular technology in recent years. It is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. It has the characteristics of decentralization, openness, independence and security. Features such as sex, anonymity, etc., have good application value in the field of payment.

With the development of the Internet of Vehicles technology, the connection between cars and cars on the highway is getting closer and closer, and it is a trend to form a fleet between vehicles. The non-tampering properties of the blockchain are combined with cryptographic methods to form a safe fleet. It is a trend in the Internet of Vehicles, so the highway toll for fleets in the blockchain scenario is an important research direction.

The prior art patent application number: 201810758361.0 mentions that a unique identification code is configured in the vehicle, and a vehicle identification device is installed for rapid identification. The identification code is used as identification information added to the blockchain for the creation of virtual accounts , combine the city ETC and the highway ETC to form a universal payment through virtual currency on a global scale and reduce the management cost. Through the evaluation system and smart contracts, user information confidentiality and feedback information mining are realized, and various services of ETC are supervised and evaluated. The use of a unified clearing module ensures the security of funds. The effect of this patent is to combine the non-repudiation characteristics of blockchain transactions to establish a relatively unified and secure payment system, which brings improvements to the current ETC payment information processing system.

With the development of the Internet of Vehicles technology, the connection between the vehicles on the highway is getting closer and closer, and the vehicles on the way form a fleet, and it is the trend of modern society to travel in groups. At the same time, vehicles use the existing communication means on the highway to facilitate the unified driving of vehicles and optimize the allocation of resources. Although the existing patent uses the blockchain for highway payment scenarios, it is only applicable to a single vehicle without stopping to charge, and it has limitations in the scenario where a fleet of vehicles is formed to drive together. In modern society, vehicles and vehicles are not isolated individuals when driving, but are closely related to each other. More and more vehicles form fleets to drive together and schedule together to make resources more reasonable. use.

Since the vehicles are dispatched by the leading vehicle, the fees for each vehicle in the fleet are paid by the leading vehicle during the collective passing of the ETC channel, and the tail vehicles are then transferred to the leading vehicle. , the vehicle may be denied payment. Therefore, the above-mentioned patent is not applicable to the case of uniform payment of tolls during the driving of the expressway fleet. The leading vehicle pays the fee on behalf of the team members who do not trust each other, but the problem of denial of payment by the team members has not been solved.

To sum up, the problems existing in the prior art are:

The existing ETC payment method has many defects; the existing technology of using blockchain payment is only suitable for a single vehicle to charge without parking, and it has limitations in the scenario where a fleet of vehicles is formed together. The fee is paid by the head car, and each tail car is then transferred to the head car. The vehicles temporarily form a team and do not trust each other. The vehicles may refuse to pay.

The difficulty of solving the above technical problems: the head car in the team pays the ETC fee instead of the tail car, and the tail car needs to return the ETC fee to the head car after the trip, and there is a problem of mutual distrust between the head car and the tail car: the tail car If the car does not trust the leading car to pay for itself, the leading car does not trust the trailing car to return the ETC fee to itself. In order to realize this scheme, team formation and payment records must be kept efficiently. The data stored by the centralized server can be easily modified, so a decentralized trusted data storage technology must be introduced, which also needs to support currency transactions. Blockchain technology can solve the above problems.

The significance of solving the above technical problems: all the vehicles in the fleet pass through the ETC together. In order to reduce the time consumed by the ETC deduction, we adopt the solution: the first car replaces the tail car to pay the ETC fee, and the tail car will pay the ETC fee after the end of the trip. The fee is returned to the lead car. In this process, the problem of mutual distrust between the head and the tail can be solved by blockchain technology. After achieving the goal of de-trusting, multiple vehicles can form a fleet with confidence, without worrying about other vehicles attacking them, because all transaction payment records in the fleet will be permanently recorded on the blockchain, which can be used as payment later. certificate to prevent repudiation.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the present invention provides a blockchain-based fleet ETC payment information processing system and method.

The present invention is implemented in this way, a blockchain-based fleet ETC payment information processing system, the blockchain-based fleet ETC payment information processing system includes:

Registration module: including the head car registration unit, the label generation unit, and the tail car registration unit; it is used to register the head car and the tail car, and generate labels at the same time;

Departure module: used for the lead car or the tail car to apply for leaving the team;

ETC payment module: used for fleets to pay ETC fees for transactions;

Clearing module: used for each node of the vehicle account to initiate a request to the smart contract that stores the virtual currency of each vehicle account, realize the recharge and withdrawal of the virtual currency, and perform the exchange rate conversion between the virtual currency and the real currency;

ETC system blockchain: includes several nodes and smart contracts; it is used to provide a node interaction platform for running smart contracts.

Further, the registration module specifically includes:

The registration module includes a head car registration unit, a label generation unit, and a tail car registration unit;

Head car registration unit: It is used for the head car to send the ETC identification code, fleet ID and blockchain account address to the ETC system blockchain to register and enter the fleet;

Label generation unit: used for the head car to integrate the ETC identification code of the tail car, the fleet ID to be added and the relevant data of the blockchain account address, and use the head car private key to generate the tail car label;

Tail car registration unit: It is used for tail cars to send ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain for registration into the fleet.

Further, the registration of the head car specifically includes:

The head car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the head car selects a fleet ID, provides its own ETC identification code, and uses the fleet ID and ETC identification code to register in the blockchain of the ETC system ; If the system detects that the fleet ID and ETC identification code have not been registered, the registration is successful; the digital signature tag generated by the successfully registered head car can be verified in the ETC system blockchain.

Further, the method for generating a tail car label specifically includes:

The tail car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the tail car provides its own ETC identification code, the fleet ID to be added, and the blockchain account address, and the head car of the corresponding fleet stores the above data. Integration, use the private key of the head car to digitally sign the data, and the generated signature is returned to the tail car as a label.

Further, the tail car registration specifically includes:

The tail car sends the ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain to register and enter the fleet; if the blockchain system detects that the ETC identification code has not been registered into the fleet, the fleet ID exists and the label is not registered. If it has been used, use the team ID to find the public key of the leading car of the team, and use the public key of the leading car to verify the digital signature on the label. After the verification is passed, the system will add the trailing car to the team, otherwise it will refuse to register and enter the team.

Further, the dequeuing module specifically includes:

Vehicle departure includes the departure of the leading vehicle and the departure of the rear vehicle;

The lead car leaves the team: After the lead car applies to leave the team, the team to which it belongs will no longer exist, and all team members will return to leaving the team;

The tail car leaves the team: The tail car applies to the ETC system blockchain to leave the team, and the system marks the tail car as leaving the team. After that, the tail car can re-request the head car of any team to generate a tag for it and re-register into the team.

Further, the ETC system blockchain specifically includes:

The ETC system blockchain: including several nodes and smart contracts;

Node: including all vehicles and ETC toll stations, used to call the system smart contract, initiate requests to the smart contract, and realize the recharge and withdrawal of virtual currency; each node can query all operation records on the blockchain;

Smart contracts: Deployed on the blockchain to process transactions, issue virtual currency, and process requests for registration, departure, payment of fees, and clearing.

Another object of the present invention is to provide a blockchain-based fleet ETC payment information processing method for running the blockchain-based fleet ETC payment information processing system, and the blockchain-based fleet ETC payment information processing method include:

Step 1: The head car uses digital signature technology to generate the exclusive label of each tail car, and the tail car uses the label to register and join the team on the blockchain;

Step 2: Before passing the ETC toll booth, the tail car requests the first car to help pay the fee, and those who do not request leave the convoy; the team members line up in front and back and drive to the ETC toll booth. When the toll booth recognizes the information of the first car, it can be detected as The convoy is passing through the toll station, so that the subsequent vehicles of the convoy pass through the ETC toll station at one time, and there is no need to slow down or stop in turn;

Step 3: After all the vehicles in the fleet have passed, the ETC toll station initiates a transaction request in the blockchain network, requiring the smart contract to process the account of the head car of the fleet. The blockchain pays the total fleet fee to the toll station; and synchronizes the processed account information to each node of the ETC system blockchain;

Step 4: The tail car pays the corresponding fee to the head car offline or online, and the repayment record will be recorded in the chain after confirmation by both parties.

Another object of the present invention is to provide an information data processing terminal that implements the blockchain-based fleet ETC payment information processing method.

Another object of the present invention is to provide a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the blockchain-based fleet ETC payment information processing method.

To sum up, the advantages and positive effects of the present invention are:

The blockchain-based fleet ETC payment information processing system provided by the present invention enables any number of vehicles on the expressway to form a team on their own, and the first vehicle pays instead of the trailing vehicle. The payment record can be downloaded from the blockchain as a certificate, which solves the problem of mutual distrust among teams; and the vehicle does not need to worry about insufficient balance and cannot pass the ETC toll station. , and then pay the fee to the lead car later. The vehicles of the convoy pass through the toll station in a unified and continuous manner. During the period, the toll station does not need to charge each vehicle with a pull rod. One pull rod can allow all vehicles in the fleet to pass through, which effectively solves the problem of traffic congestion and greatly improves the efficiency of the high-speed ETC toll station.

The invention utilizes the open and trustless feature of the block chain, and solves the problem that the team members complete the unified payment and quickly pass through the ETC toll station under the condition of mutual distrust.

All operation records in the blockchain-based fleet ETC payment information processing system of the present invention will be permanently stored on the blockchain, and all data can be traced back to prevent denials and solve the problem of mutual distrust and team payment. After the head car pays the fee instead of the tail car, the payment record will be permanently stored on the blockchain, and the record can be downloaded for proof when the tail car denies, and the record of the tail car paying the fee to the head car will also be saved on the blockchain. Two-way recording to prevent any party from denying.

Description of drawings

FIG. 1 is a schematic structural diagram of a blockchain-based fleet ETC payment information processing system provided by an embodiment of the present invention.

In the figure: 1. Registration module; 2. Departure module; 3. ETC payment module; 4. Clearing module; 5. ETC system blockchain; 6. First car registration unit; 7. Label generation unit; 8. Tail car registration unit.

FIG. 2 is a flowchart of a method for processing fleet ETC payment information based on a blockchain provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of an experimental result provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The technical solutions and technical effects of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1, the blockchain-based fleet ETC payment information processing system provided by the embodiment of the present invention specifically includes:

Registration module 1: including a leading vehicle registration unit 6, a label generating unit 7, and a trailing vehicle registration unit 8; used to register the leading vehicle and the trailing vehicle, and generate labels at the same time.

Departure module 2: It is used for the lead car or the tail car to apply for leaving the team.

ETC payment module 3: It is used for the fleet to pay ETC fees for transactions.

Clearing module 4: It is used for each node of the vehicle account to initiate a request to the smart contract storing the virtual currency of each vehicle account, to realize the recharge and withdrawal of the virtual currency, and to perform the exchange rate conversion between the virtual currency and the real currency.

ETC system blockchain 5: includes several nodes and smart contracts; it is used to provide a node interaction platform for running smart contracts.

The registration module 1 provided by the embodiment of the present invention specifically includes:

The registration module includes a leading vehicle registration unit 6 , a label generation unit 7 , and a tail vehicle registration unit 8 .

Head car registration unit 6: It is used for the head car to send the ETC identification code, fleet ID and blockchain account address to the ETC system blockchain to register and enter the fleet.

Label generation unit 7: used for the head car to integrate the ETC identification code of the tail car, the fleet ID to be added, and the relevant data of the blockchain account address, and use the head car private key to generate the tail car label.

Tail car registration unit 8: used for the tail car to send the ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain for registration into the fleet.

The head car registration provided by the embodiment of the present invention specifically includes:

The head car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the head car selects a fleet ID, provides its own ETC identification code, and uses the fleet ID and ETC identification code to register in the blockchain of the ETC system ; If the system detects that the fleet ID and ETC identification code have not been registered, the registration is successful; the digital signature tag generated by the successfully registered head car can be verified in the ETC system blockchain.

The method for generating a tail car label provided by the embodiment of the present invention specifically includes:

The tail car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the tail car provides its own ETC identification code, the fleet ID to be added, and the blockchain account address, and the head car of the corresponding fleet stores the above data. Integration, use the private key of the head car to digitally sign the data, and the generated signature is returned to the tail car as a label.

The tail car registration provided by the embodiment of the present invention specifically includes:

The tail car sends the ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain to register and enter the fleet; if the blockchain system detects that the ETC identification code has not been registered into the fleet, the fleet ID exists and the label is not registered. If it has been used, use the team ID to find the public key of the leading car of the team, and use the public key of the leading car to verify the digital signature on the label. After the verification is passed, the system will add the trailing car to the team, otherwise it will refuse to register and enter the team.

The dequeue module 2 provided by the embodiment of the present invention specifically includes:

Vehicle departure includes the departure of the leading vehicle and the departure of the rear vehicle.

The lead car leaves the team: After the lead car applies to withdraw from the team, the team to which it belongs will no longer exist, and all team members will return to leaving the team.

The tail car leaves the team: The tail car applies to the ETC system blockchain to leave the team, and the system marks the tail car as leaving the team. After that, the tail car can re-request the head car of any team to generate a tag for it and re-register into the team.

The ETC system blockchain 5 provided by the embodiment of the present invention specifically includes:

The ETC system blockchain: including several nodes and smart contracts.

Node: including all vehicles and ETC toll stations, used to call the system smart contract, initiate requests to the smart contract, and realize the recharge and withdrawal of virtual currency; each node can query all operation records on the blockchain.

Smart contracts: Deployed on the blockchain to process transactions, issue virtual currency, and process requests for registration, departure, payment of fees, and clearing.

As shown in FIG. 2 , the blockchain-based fleet ETC payment information processing method provided by the embodiment of the present invention specifically includes:

S201: The head car uses the digital signature technology to generate the exclusive label of each tail car, and the tail car uses the label to register and join the team on the blockchain.

S202: Before passing through the ETC toll booth, the tail car requests the first car to help pay the fee, and those who do not request leave the convoy; the team members form a front and rear column and drive to the ETC toll booth. When the toll booth recognizes the information of the first car, it can be detected as a convoy. Passing through the toll station, allowing the following vehicles of the fleet to pass through the ETC toll station at one time, without the need to slow down or stop halfway.

S203: After all the vehicles in the fleet have passed, the ETC toll station initiates a transaction request in the blockchain network, requesting the smart contract to process the account of the leading vehicle in the fleet. The block chain pays the total fleet fee to the toll station; and synchronizes the processed account information to each node of the ETC system block chain.

S204: The tail car pays the corresponding fee to the head car offline or online, and the repayment record will be recorded in the chain after confirmation by both parties.

The technical solutions and technical effects of the present invention will be further described below with reference to specific embodiments.

Example 1:

The blockchain has a consensus mechanism, and newly generated transactions will be synchronized to the ledgers of other nodes, and the data will be permanently stored and cannot be tampered with. The blockchain adopts a distributed structure, and all data on the chain is backed up on each node or has a lightweight hash value backup, which solves the risk of the centralized server being tampered with. All operation records in the blockchain-based fleet ETC payment information processing system of the present invention will be permanently stored on the blockchain, and all data can be traced back to prevent denials and solve the problem of mutual distrust and team payment. After the head car pays the fee instead of the tail car, the payment record will be permanently stored on the blockchain, and the record can be downloaded for proof when the tail car denies, and the record of the tail car paying the fee to the head car will also be saved on the blockchain. Two-way recording to prevent any party from denying.

The invention discloses a block chain-based fleet ETC payment information processing system, wherein the method includes: the head car of the fleet registers the fleet on the block chain; Register to join the team on the blockchain with the tag; before passing the ETC toll station, the tail car asks the head car to help pay the fee, and those who do not request leave the team; when traveling to the ETC toll station, the first car uses the blockchain to pay the total amount of the fleet to the toll station cost. The invention utilizes the open and trustless feature of the block chain, and solves the problem that the team members complete the unified payment and quickly pass through the ETC toll station under the condition of mutual distrust.

The ETC device of the vehicle has a unique identification code with which the vehicle is registered into the ETC blockchain system. Multiple vehicles can form a team by themselves, with one vehicle as the lead vehicle. The team members line up and drive to the ETC toll booth. When the toll booth recognizes the information of the first vehicle, it can detect that the team is passing through the toll booth, so that the subsequent vehicles of the team can pass through the ETC toll booth at one time without stopping in turn. After all members of the team have passed, the ETC toll station will deduct the fee from the account of the first car of the team on the blockchain network, and all the tail cars will pay the corresponding fee to the first car.

The blockchain-based fleet ETC payment information processing system provided by the embodiment of the present invention includes the following six modules:

1. Register the module:

1.1. Headcar registration: The headcar is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained. The head car selects a fleet ID, provides its own ETC identification code, and uses this information to register in the ETC system blockchain. If the system detects that the fleet ID and ETC identification code have not been registered before, the registration is successful. The digital signature tag generated by the successfully registered head car can be verified in the ETC system blockchain.

1.2. Generate a label: The tail car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained. The tail car provides its own ETC identification code, the team ID and blockchain account address to be added, and the head car of the corresponding team integrates these data, and then uses its own private key to digitally sign the data, and the generated signature is returned as a label to the tail car.

1.3. Tail car registration: The tail car sends the ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain to register and enter the fleet. If the blockchain system detects that the license plate number is not registered, the fleet ID exists, and the label has not been used, it will use the fleet ID to find the public key of the leading vehicle of the fleet, and use the public key to verify the digital signature of the label. The tail car joins the team, otherwise it refuses to register into the team.

2. Leaving the team: The tail car applies to the blockchain of the ETC system to leave the team, and the system marks the tail car as leaving the team. After that, the tail car can re-request the head car of any team to generate a tag for it and re-register into the team. After the lead car applies to withdraw from the team, the team to which it belongs ceases to exist, and all team members return to the state of leaving the team.

3. ETC payment: The team members line up and drive to the ETC toll booth. When the toll booth recognizes the information of the first vehicle, it can be detected that the team is passing through the toll booth, and the subsequent vehicles of the team can pass through the ETC toll booth at one time. No need to stop in turn. After all the vehicles in the fleet pass, the ETC toll station initiates a transaction request in the blockchain network, requiring the smart contract to process the account of the leading vehicle in the fleet. According to the transaction request, the smart contract deducts the fee from the first car account, and synchronizes the processed account information to each node of the ETC system blockchain. This smart contract is deployed to run on the blockchain and is used to process transactions. The tail car pays the corresponding fee to the head car offline or online, and the repayment record will be recorded in the chain after confirmation by both parties.

4. Clearing module: The smart contract issues virtual currency, and the blockchain account of the vehicle stores the corresponding virtual currency in the smart contract, which can be used to realize exchange rate conversion with real currency. Each node of the vehicle account can initiate a request to the smart contract to realize the recharge and withdrawal of virtual currency.

5. ETC system blockchain: All vehicles and ETC toll stations are nodes in the ETC system blockchain, running system smart contracts. Smart contracts handle requests for registration, departure, payment of fees, and clearing. Each node can query all operation records on the blockchain to prevent denial.

The technical solutions of the present invention will be further described below with reference to specific embodiments.

The solution proposed by the present invention enables multiple vehicles in the fleet to pass through the ETC at one time. Now, according to the data in the actual scene, the fleet passing through the ETC together in the solution according to the present invention and the single vehicle passing through the ETC in turn in the traditional solution are compared.

According to the highway ETC standard, vehicles should obey the rules of speed v and distance Dv between two vehicles when passing through ETC. Suppose there are m cars to form a fleet, and the distance between vehicles in the fleet is Dp. For n cars of average length l, compare the time Tplatoon takes to pass the ETC after it has established a fleet with the time Tvehicle takes for a single vehicle to pass the ETC:

According to the standard parameters of ETC, let v=20km/h, Dv=10m, Dp=1m, l=4m, and assume that m=5 vehicles to form a fleet. For different n, the experimental results are shown in Fig. 3. It can be seen from Figure 3 that the time it takes for a single vehicle to pass through the ETC in turn and multiple vehicles to pass through the ETC together after forming a fleet increases linearly with the increase of the number of vehicles, which is consistent with the calculation results of the formula. When the number of vehicles is the same, it is obvious that the fleet solution of the present invention consumes less time. As the number of vehicles increases, the time interval between the two lines becomes larger and larger. From this, it can be concluded that our scheme saves the time overhead of ETC payment on the highway.

It should be noted that the embodiments of the present invention may be implemented by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using special purpose logic; the software portion may be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those of ordinary skill in the art will appreciate that the apparatus and methods described above may be implemented using computer-executable instructions and/or embodied in processor control code, for example on a carrier medium such as a disk, CD or DVD-ROM, such as a read-only memory Such code is provided on a programmable memory (firmware) or a data carrier such as an optical or electronic signal carrier. The device of the present invention and its modules can be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, etc., or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., It can also be implemented by software executed by various types of processors, or by a combination of the above-mentioned hardware circuits and software, such as firmware.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. a block chain-based fleet ETC payment information processing system, is characterized in that, the block chain-based fleet ETC payment information processing system comprises: Registration module: including the head car registration unit, the label generation unit, and the tail car registration unit; it is used to register the head car and the tail car, and generate labels at the same time; Departure module: used for the lead car or the tail car to apply for leaving the team; ETC payment module: used for fleets to pay ETC fees for transactions; Clearing module: used for each node of the vehicle account to initiate a request to the smart contract that stores the virtual currency of each vehicle account, realize the recharge and withdrawal of the virtual currency, and perform the exchange rate conversion between the virtual currency and the real currency; ETC system blockchain: includes several nodes and smart contracts; it is used to provide a node interaction platform for running smart contracts. 2. The blockchain-based fleet ETC payment information processing system as claimed in claim 1, wherein the registration module specifically comprises: The registration module includes a head car registration unit, a label generation unit, and a tail car registration unit; Head car registration unit: It is used for the head car to send the ETC identification code, fleet ID and blockchain account address to the ETC system blockchain to register and enter the fleet; Label generation unit: used for the head car to integrate the ETC identification code of the tail car, the fleet ID to be added and the relevant data of the blockchain account address, and use the head car private key to generate the tail car label; Tail car registration unit: It is used for tail cars to send ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain for registration into the fleet. 3. The blockchain-based fleet ETC payment information processing system as claimed in claim 1, wherein the registration of the first vehicle specifically comprises: The head car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the head car selects a fleet ID, provides its own ETC identification code, and uses the fleet ID and ETC identification code to register in the blockchain of the ETC system ; If the system detects that the fleet ID and ETC identification code have not been registered, the registration is successful; the digital signature tag generated by the successfully registered head car can be verified in the ETC system blockchain. 4. The blockchain-based fleet ETC payment information processing system according to claim 1, wherein the method for generating a tail car label specifically comprises: The tail car is registered in the blockchain network, and the public and private keys and the blockchain account address are obtained; the tail car provides its own ETC identification code, the fleet ID to be added, and the blockchain account address, and the head car of the corresponding fleet stores the above data. Integration, use the private key of the head car to digitally sign the data, and the generated signature is returned to the tail car as a label. 5. The blockchain-based fleet ETC payment information processing system according to claim 1, wherein the registration of the tail car specifically comprises: The tail car sends the ETC identification code, fleet ID, blockchain account address and label to the ETC system blockchain for registration into the fleet; if the blockchain system detects that the ETC identification code has not been registered into the fleet, the fleet ID exists and the label is not registered. If it has been used, use the team ID to find the public key of the leading car of the team, and use the public key of the leading car to verify the digital signature on the label. After the verification is passed, the system will add the trailing car to the team, otherwise it will refuse to register and enter the team. 6. The blockchain-based fleet ETC payment information processing system as claimed in claim 1, wherein the leaving the team module specifically comprises: Vehicle departure includes the departure of the leading vehicle and the departure of the rear vehicle; The lead car leaves the team: After the lead car applies to withdraw from the team, the team to which it belongs will no longer exist, and all team members will return to leaving the team; The tail car leaves the team: The tail car applies to the ETC system blockchain to leave the team, and the system marks the tail car as leaving the team. After that, the tail car can re-request the head car of any team to generate a tag for it and re-register into the team. 7. The blockchain-based fleet ETC payment information processing system as claimed in claim 1, wherein the ETC system blockchain specifically comprises: The ETC system blockchain: including several nodes and smart contracts; Node: including all vehicles and ETC toll stations, used to call the system smart contract, initiate requests to the smart contract, and realize the recharge and withdrawal of virtual currency; each node can query all operation records on the blockchain; Smart contracts: Deployed on the blockchain to process transactions, issue virtual currency, and process requests for registration, departure, payment of fees, and clearing. 8. A block chain-based fleet ETC payment information processing method for running the block chain-based fleet ETC payment information processing system of claim 1, wherein the block chain-based fleet ETC payment information processing Methods include: Step 1, the head car uses digital signature technology to generate the exclusive label of each tail car, and the tail car uses the label to register and join the team on the blockchain; Step 2: Before passing through the ETC toll booth, the tail car requests the first car to help pay the fee, and those who do not request leave the convoy; the team members line up in front and back to the ETC toll booth. When the toll booth recognizes the information of the first car, it can be detected that it is The convoy is passing through the toll station, allowing the following vehicles of the convoy to pass through the ETC toll station at one time, without the need to slow down or stop in turn; Step 3: After all the vehicles in the fleet have passed, the ETC toll station initiates a transaction request in the blockchain network, requiring the smart contract to process the account of the head car of the fleet. The blockchain pays the total fleet fee to the toll station; and synchronizes the processed account information to each node of the ETC system blockchain; Step 4: The tail car pays the corresponding fee to the head car offline or online, and the repayment record will be recorded in the chain after confirmation by both parties. 9. An information data processing terminal implementing the blockchain-based fleet ETC payment information processing method of claim 8. 10. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to execute the blockchain-based fleet ETC payment information processing method of claim 8.

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