CN116129580A

CN116129580A - Secondary issuing method and system of OBU (on-board unit) equipment

Info

Publication number: CN116129580A
Application number: CN202310123569.6A
Authority: CN
Inventors: 李超; 高原; 李斌; 刘铸德; 王强
Original assignee: Shandong High Speed Xinlian Technology Co ltd
Current assignee: Shandong High Speed Xinlian Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-05-16

Abstract

The invention provides a secondary issuing method and a system of OBU equipment, wherein the system comprises the following steps: OBU equipment, OBU vending machine, background management system and user terminal; the OBU equipment is placed in an OBU vending machine; OBU sells machine by oneself includes: the operation unit is used for carrying out local operation and interactive information encoding and decoding to complete transaction order information; the shipment unit pushes the OBU equipment to a shipment port; the remote communication unit is used for communication; the display interaction unit prompts the owner of the vehicle to provide information; the GPS unit sends positioning information; the background management system is used for monitoring the OBU vending machine, verifying the legitimacy of the OBU equipment and generating a secondary issuing information instruction; the background management system stores PSAM secret keys which are used for generating operation instruction contents for ESAM; and the user terminal is used for enabling the vehicle owner to remotely activate the OBU device. According to the invention, the OBU equipment is sold in the vending machine, and accurate and automatic secondary release operation is realized, so that the cost of manpower and material resources is reduced, and the release and popularization of the OBU equipment are facilitated.

Description

Secondary issuing method and system of OBU (on-board unit) equipment

Technical Field

The invention relates to the field of ETC issuing, in particular to a secondary issuing method and system of OBU equipment.

Background

All OBUs ready for presentation to the vehicle owner must go through a single release. After the owner submits various vehicle information, identity information and contracted bank data, the OBU can be mounted on the vehicle after the OBU is subjected to secondary issuing operation. The owner of the vehicle wants to obtain a legitimate OBU and must go through a secondary issuing operation. And the secondary issuing operation directly influences the scheme that the vehicle owner obtains the OBU. There are two current operating schemes for secondary release of an OBU:

the first type is a secondary distribution by a desktop issuer. The car owners bring various certificate data to the ETC business hall, and after submitting various certificate data and signing bank information, the business hall personnel performs secondary issuing operation on the OBU which is issued once through the desktop issuer. After the operation is finished, the business hall personnel personally assist the car owner to install on the car, then the last activation operation is carried out through the handset, and at the moment, the OBU is legal, so that the ETC can be finally passed. After submitting the data certificate through the mobile phone APP or the applet, the background staff performs secondary issuing through a desktop issuer. After the secondary release is finished, the secondary release is sent to the car owner in a mailing mode, and the car owner performs self-service installation and activation.

The second type establishes Bluetooth connection with the OBU through the user terminal for secondary release. And the owner fills in the data on line through the APP or the applet on the mobile phone and submits the data to the background management system. After the background management system staff checks the data, the OBU which is issued only once is issued to the vehicle owner. After the vehicle owner takes the OBU which is issued once, the Bluetooth is connected to the OBU through the user terminal, and the vehicle owner is connected to the OBU and the background management system by taking the mobile phone as a medium. And the background management system realizes the secondary issuing operation of the OBU through the Bluetooth forwarding of the mobile phone.

Chinese invention patent name: self-service issuing system of automobile-used electronic tags, patent number: CN110363932B provides a self-service issuing system of electronic tag for vehicle, comprising: the system comprises a server, self-service terminal equipment, batch card making equipment and a user terminal; the server is provided with an issuing management subsystem and an online issuing subsystem; the self-service terminal equipment is internally provided with a self-service issuing terminal subsystem; the issuing management subsystem is used for managing the online issuing subsystem, the self-service issuing terminal subsystem, the self-service terminal equipment and the batch card making equipment; the user carries out on-line electronic tag application through an on-line issuing subsystem, and obtains the manufactured electronic tag by mailing or self-taking; and issuing the electronic tag by self-service issuing terminal subsystem.

The problems in the prior art are as follows:

the desktop issuer uses a DSRC communication mode to realize secondary issuing, and DSRC signals belong to radio frequency signals, and have the characteristics that signal diffusion is easy to be recognized by a plurality of surrounding OBUs and connection is established. If the desktop issuer is disposed within the OBU vending machine, the desktop issuer cannot confirm which OBU will be subjected to the secondary issue operation, nor cannot determine which physical location the OBU that eventually completes the secondary issue operation. The secondary issuing operational tasks within the OBU vending machine cannot be undertaken by the desktop issuer.

The secondary issuing operation is complicated, and key information is involved. If the owner is allowed to issue the operation for the second time by the mobile phone APP or the small program, the second issue is easy to fail, the transaction failure is generated, and then the goods are returned, so that the follow-up customer service is very difficult. Once the key information is revealed, the ETC operation of the whole country can generate potential safety hazards.

OBU devices are different from other toys, snacks, beverages. Each OBU device has independent one-time release information code, and registration record is needed, so that the OBU information purchased by each vehicle owner must be bound and registered with the vehicle owner. This requires the vending machine to closely monitor and manage the records for each OBU. The above two schemes can not collect and register information on the OBU taken by the vehicle owner from the OBU vending machine.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a secondary issuing method and system of OBU equipment, comprising the following steps: OBU equipment, OBU vending machine, background management system and user terminal; the OBU equipment is placed in an OBU vending machine after being issued for one time; the OBU self-service vending machine realizes local operation and interactive information coding and decoding, completes transaction order information, provides information through the vehicle owner, and completes secondary release; the background management system is used for monitoring the OBU vending machine, verifying the legitimacy of the OBU equipment and generating a secondary issuing information instruction, and a PSAM secret key is stored in the background management system and used for generating the content of the operation instruction for the ESAM; and the user terminal is in communication connection with the background management system and is used for enabling the vehicle owner to remotely activate the OBU device.

The technical scheme adopted by the invention is as follows:

a secondary distribution system for an OBU device, comprising: OBU equipment, OBU vending machine, background management system and user terminal;

the OBU equipment is placed in an OBU vending machine after being issued for one time;

OBU sells machine by oneself includes: the system comprises a storage warehouse unit, an operation unit, a shipment unit, a remote communication unit, a display interaction unit and a GPS unit; the storage warehouse unit comprises a plurality of sub-storage units for storing OBU devices; the operation unit is used for carrying out local operation and interactive information encoding and decoding to complete transaction order information; the shipment unit is used for pushing the OBU equipment of the storage unit to a shipment port; the remote communication unit is used for communicating with the background management system; the display interaction unit is used for prompting the vehicle owner to provide information and prompting the vehicle owner to pick up the OBU equipment; the GPS unit is used for sending positioning information;

the background management system is used for monitoring the OBU vending machine, verifying the legitimacy of the OBU equipment and generating a secondary issuing information instruction; the background management system stores PSAM secret keys which are used for generating operation instruction contents for ESAM;

and the user terminal is in communication connection with the background management system and is used for enabling the vehicle owner to remotely activate the OBU device.

A method of secondary distribution of OBU devices, said method being applicable to said distribution system, comprising:

the OBU equipment issuing unit places the OBU equipment after one-time issuing in a storage warehouse unit of the OBU vending machine;

the background management system monitors the validity of the information issued by the OBU equipment once, and if the information issued by the OBU equipment once is illegal, the OBU equipment is not sold; if the OBU device is legal, the background management system generates a secondary issuing information instruction;

the background management system acquires the owner information through a display interaction unit of the OBU vending machine, and checks the owner information with the vehicle information prestored in the system, and if the verification is not allowed to be vended; the background management system is called with the signing bank through an interface, verifies whether signing with the bank is successful or not, and does not sell the OBU equipment if signing fails, so that secondary issuing of the OBU equipment is realized;

and the vehicle owner acquires the OBU device and activates the OBU device.

The beneficial effects of the invention are as follows: according to the invention, the OBU equipment is sold in the vending machine, and accurate and automatic secondary release operation is realized, and the background management system is set to realize the arrangement of the OBU vending machine, so that the cost of manpower and material resources is reduced, and the release and popularization of the OBU equipment are facilitated. The invention adopts USB communication to replace Bluetooth communication mode, has more stable connection and more stable data transmission, and is not easy to generate data loss; through the IO wake-up function of the USB hardware interface, once the activation flow is carried out, the MCU main control chip of the OBU equipment is always in a working state, and the problem of activation failure caused by timeout dormancy is avoided; the transaction flow is packaged in a private ciphertext format, and is transmitted by adopting two ciphertexts A and B, so that a transmission channel is more secret and safer.

Drawings

FIG. 1 is a schematic diagram of a secondary issuing system of an OBU device according to the present invention;

fig. 2 is a flow chart of a secondary issuing method of an OBU device according to the present invention.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings: in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.

As shown in fig. 1, the present invention provides a secondary issuing system of an OBU device, including: OBU equipment, OBU vending machine, background management system and user terminal;

OBU sells machine by oneself includes: the system comprises a storage warehouse unit, an operation unit, a shipment unit, a remote communication unit, a display interaction unit and a GPS unit;

the storage warehouse unit comprises a plurality of sub-storage units for storing OBU equipment, and each OBU equipment sub-storage unit is provided with a USB interface with a magnetic material, so that the USB interface of the OBU equipment is automatically connected to the USB interface of the sub-storage unit during replenishment.

The operation unit is used for carrying out local operation and interactive information encoding and decoding to complete transaction order information; the shipment unit is used for pushing the OBU equipment of the storage unit to a shipment port for a vehicle owner to pick up; the remote communication unit is used for the OBU vending machine to communicate with the background management system; the display interaction unit is used for prompting the vehicle owner to provide information such as vehicles, certificates, contracted banks and the like and prompting the vehicle owner to pick up OBU equipment; the GPS unit is used for sending positioning information;

the background management system is used for monitoring the OBU vending machine, verifying the legitimacy of the OBU equipment and generating a secondary issuing information instruction; the background management system stores PSAM secret keys which are used for generating operation instruction contents for ESAM; the background management system is provided with an OBU database which is issued once by an operation service provider, and the once-issued information of the OBU equipment sold in the OBU vending machine is required to be legally matched with the data in the once-issued database. The matching content comprises: the service provider code, the deal type, the deal version number, the contract serial number, the contract signing start date and the validity period.

The information of the self-service vending machine monitoring inventory and specific every OBU equipment of OBU, the self-service vending machine of OBU passes through USB with every OBU equipment and connects interactive communication, and the arithmetic unit of the self-service vending machine of OBU can accurately discern whether have OBU equipment in every sub-storage unit to and the information of once issuing of this OBU equipment.

The OBU vending machine can monitor the validity of information once issued by each OBU device, and specifically comprises the following steps: the OBU vending machine sends the primary release information of each OBU device to a background management system through a remote communication unit, and the background management system checks the validity of the primary release information in a primary release database. When invalid information is generated for a certain time, the background management system gives an active alarm and prompts operation and maintenance personnel to process. And meanwhile, the OBU in a certain sub storage unit of the OBU vending machine is informed of illegal vending, and vending is not allowed. The validity check mainly checks the following contents: whether the one-time release service provider is the service provider, whether the deal type is legal, whether the deal version is legal, whether the contract serial number matches the contract serial number in the one-time release database, and whether the contract effective date is expired are judged. If any of the conditions is not satisfied, the OBU is considered to be illegal in one-time release information and is not allowed to be sold.

The OBU vending machine is used for automatically acquiring owner information and carrying out binding operation with one-time release information of a specific OBU device. The OBU self-service vending machine collects information of vehicle information, identity card information, signing bank information and the like of a vehicle owner through the display interaction unit, and then selects a legal OBU device to carry out binding operation. The method for collecting the owner information comprises the following steps: the vehicle owner actively scans the OBU vending machine and submits data through displaying the dynamic two-dimensional code displayed by the interactive unit. The OBU self-service vending machine informs a background management system of all the bound information through a remote communication unit, the background management system respectively checks vehicle information prestored in the system according to the received information to be issued secondarily, the verification does not allow the vending, and meanwhile, the background management system and a signing bank call through an interface to verify whether signing with the bank is successful or not, and if signing fails, the OBU equipment vending is not allowed.

The background management system can accurately control the USB interface in a certain sub-storage unit through the OBU vending machine, and perform secondary issuing operation on the OBU in the sub-storage unit. The secondary issuing specifically relates to random number verification, network communication encryption of a remote communication unit of the OBU vending machine and a background management system, communication encryption of the OBU vending machine and OBU equipment through USB and the like.

The OBU vending machine supports the query function of the number of legal OBUs remained in each OBU vending machine, and a replenishment threshold is preset. For example, when the legal OBU quantity in the storage warehouse unit is less than 30% by default, the replenishment notice is automatically issued to the background management system. The background management system checks and monitors the number of the OBU storage warehouse, calculates the theoretical number of OBUs in the storage warehouse unit of the current OBU vending machine through the replenishment record and the shipment record, combines the number of the OBUs actually detected, and carries out abnormal quantity alarming when the number of the OBU storage warehouse unit and the number of the OBU storage warehouse unit are inconsistent.

The backstage management system monitors the state of each OBU vending machine, and the monitoring information comprises: the OBU vending machine geographical position, the current state (vending, no goods, faults and the like) of the OBU vending machine, whether each module of the OBU vending machine fails, the normal working time, the failure time, the number of fault repairs, the failure time point, whether disconnection is performed and the like. The built-in GPS unit of the OBU vending machine can report the geographic position of the OBU vending machine in real time, and meanwhile, the geographic position is matched with the geographic position when the vending machine is installed and arranged, and if the geographic position is inconsistent, an alarm is given; each hardware module of OBU vending machine possesses self-checking function, include: whether the machine of the shipment unit is normal, whether the link with the background management system is normal, whether each sub-storage unit is normal and the like, so that whether the OBU vending machine is in a normal working state is determined. If the fault occurs, fault information is recorded for maintenance personnel to locate and maintain the problem.

The background management system monitors and manages each trade order, and the order information at least comprises: the OBU vending machine number, the OBU vending machine position, the belonging area, the order number, the order submitting time, the product specification, the order transaction result, the order payment time, the order payment information, the order shipment result, the transaction amount, the OBU primary release information, the OBU secondary release information and the like. Once the order is abnormal or fails, problem backtracking, analysis, solution and later optimization can be performed according to the recorded order information, and the reasons for the problems such as mismatching of the customer filling data and the system data, abnormal order payment, insufficient customer credibility fed back by the bank and the like can be analyzed if the customer vehicle has transacted other ETC functions of the operation service provider. The background management system can generate an order list, and background management staff can carry out screening and summarization through certain information of the order, so that a corresponding trend chart is generated for continuous optimization and decision of products.

A method for secondary distribution of OBU devices, said method being suitable for use in said distribution system, comprising the steps of:

an OBU equipment replenishment threshold value is arranged in the background management system, the remaining OBU equipment of the OBU vending machine storage warehouse unit is monitored, and replenishment reminding is sent out when the number of the remaining OBU equipment of the storage warehouse unit is lower than the replenishment threshold value;

the background management system checks and monitors the quantity of the warehouse, calculates the theoretical OBU quantity in the storage warehouse unit of the current OBU self-service vending machine through the replenishment record and the shipment record, combines the actually detected OBU quantity, and carries out quantity abnormality warning when the quantity of the theoretical OBU and the actual OBU quantity are inconsistent;

the background management system monitors and manages each trade order, and if an order abnormality or an order failure occurs, problem backtracking, analysis, solution and later optimization are carried out according to recorded order information;

the background management system can generate an order list, and is used for background management personnel to screen and summarize order information and generate an order trend graph;

and the vehicle owner acquires the OBU device and activates the OBU device.

The user terminal can actively initiate related activation service by the vehicle owner. The user terminal is connected with the OBU device through a mobile phone USB data line in hardware. The owner's mobile phone must have the function of communicating with the background key management system, and must support at least one of WIFI, 4G, 5G.

The OBU device at this time is a device that has undergone both primary and secondary release, and arrives at the owner by mailing or in a self-service mode. The OBU device can be changed into legal OBU device only through the last remote activation operation, and the ETC traffic of the expressway is carried out.

The OBU equipment is in the sleep state under the normal condition, reduces the power consumption. When passing through a toll station or an ETC portal, the toll station or the ETC portal is awakened by a DSRC signal, and the MCU main control chip of the OBU equipment is in an awakening working state.

The OBU device is designed to support the USB hardware plug-and-pull wake-up function, and when the USB interface is plugged in, the MCU main control chip of the OBU device can be woken up through IO. After the MCU main control chip is awakened, detecting whether an awakening source IO of the USB is always in an inserted state or not at regular intervals. The MCU main control chip can keep the working state all the time when detecting the USB hardware connection signal, and the MCU main control chip can not enter sleep again until the USB hardware channel is disconnected, so that the activation process is prevented from being interrupted due to the sleep of the MCU main control chip. When the USB interface is pulled out, the MCU main control chip detects that the IO signal of the wake-up source of the USB disappears, and the MCU main control chip reenters the sleep state.

And the MCU main control chip of the OBU equipment is communicated with the ESAM of the key information storage unit of the OBU equipment in an SPI connection mode. The key information storage unit ESAM can identify the original ESAM instruction and reply the instruction result to the MCU main control chip through SPI communication.

The user terminal communicates with the OBU device through the USB physical channel, the OBU device terminal converts USB communication into UART communication protocol, and the communication content is effectively encrypted and is called ciphertext B.

The OBU device activated by the vehicle owner specifically comprises the following steps:

after the vehicle owner installs the OBU equipment, the USB data line is connected with the USB interfaces of the vehicle owner mobile phone and the OBU equipment;

the user terminal sends the ciphertext B to a main control chip of the OBU device;

the main control chip of the OBU device analyzes the ciphertext B, generates a primary ESAM reading instruction, and transmits the primary ESAM reading instruction to the key storage unit through the SPI channel;

the key storage unit executes the result, obtains the stored primary release information and secondary release information, and transmits the primary release information and the secondary release information to the main control chip of the OBU device through the SPI channel;

the OBU equipment main control chip generates a ciphertext B through data encryption and transmits the ciphertext B to the user terminal through a USB data channel;

the user terminal judges whether the result is normal or not through decrypting the ciphertext B, and continuously packages the result into a ciphertext A to be transmitted to a background management system;

after receiving the ciphertext A, the background management system analyzes the ciphertext A into normal primary release information and secondary release information, and judges the validity of the information; such as issuer validity judgment, primary issuer information validity judgment, secondary issuer information warehouse-in comparison, bank subscription information confirmation and the like. If the validity judgment of the primary issuing and the secondary issuing is valid, generating a primary ESAM random number taking operation instruction, packaging the operation instruction into a ciphertext A, and sending the ciphertext A to a user terminal;

after receiving the ciphertext A, the user terminal analyzes the ciphertext A, and if the primary release information and the secondary release information are effective, the original ESAM is repackaged into a ciphertext B by taking a random number operation instruction, and the ciphertext B is sent to an OBU device main control chip through a USB hardware channel; if the user terminal receives the ciphertext A and then analyzes the ciphertext A, and the primary release information and the secondary release information are invalid, the information is possibly missing or attacked maliciously, the transaction is stopped immediately, the ciphertext is prevented from being decrypted, and meanwhile warning information of a background management system is reported; multiple warnings trigger a background special person to analyze and maintain;

the OBU device main control chip analyzes the ciphertext B to obtain a random number instruction for the original ESAM, transmits the random number instruction to the key information storage unit through the SPI, packages the obtained ESAM operation result into the ciphertext B, and transmits the ciphertext B to the user terminal through the USB hardware channel;

the user terminal analyzes the ciphertext B, and repacks the result into ciphertext A and sends the ciphertext A to the background management system;

after analyzing the ciphertext A, the background management system generates a primary update ESAM information operation instruction which is matched with the random number one by one after PSAM encryption operation; after being packed into ciphertext A, the ciphertext A is sent to a user terminal;

after receiving the ciphertext A, the user terminal analyzes and preliminarily judges whether to perform the next operation, packages the original ESAM information updating operation instruction into a ciphertext B, and sends the ciphertext B to the OBU equipment main control chip through the USB hardware channel;

after the ciphertext B is analyzed by the OBU equipment main control chip, a primary update ESAM information operation instruction is obtained and sent to the key information storage unit through the SPI channel;

after receiving the original ESAM information updating operation instruction, the key information storage unit performs instruction validity verification through the random number replied before, after the verification is passed, the ESAM information updating operation is performed, and an operation result is packed into a ciphertext B and transmitted to the user terminal;

after receiving and analyzing the ciphertext B, the user terminal preliminarily judges an activation result, packages the result into a ciphertext A and sends the ciphertext A to a background management system, and after the ciphertext A is sent, prompts the owner of the vehicle that the activation is successful, and the OBU equipment can normally pass ETC;

and after receiving the ciphertext A, the background management system records the activating result and records the file, and the activating process is completed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims

1. A secondary distribution system for an OBU device, comprising: OBU equipment, OBU vending machine, background management system and user terminal;

2. The secondary distribution system of an OBU device according to claim 1, wherein the background management system performs validity check on the OBU device specifically includes: an operation server is arranged in the background management system and passes through an OBU database issued once, the OBU self-service vending machine sends the once issued information of each OBU device to the background management system through a remote communication unit, and when invalid information of a certain issue occurs, the background management system carries out active alarm and prompts operation and maintenance personnel to process, and notifies the OBU in a certain sub storage unit of the OBU self-service vending machine that the OBU is illegal and not allowed to be sold; the validity check includes: judging whether the primary release service provider is the service provider, whether the type of the deal is legal, whether the version of the deal is legal, whether the serial number of the contract is matched with the serial number of the contract in the primary release database, and whether the valid date of the contract is out of date, and when any validity check content is not met, judging that the primary release information of the OBU is illegal and not allowing to be sold.

3. The secondary issuing system of an OBU device according to claim 1, wherein the OBU vending machine display interaction unit is configured to prompt a vehicle owner to provide information, and prompting the vehicle owner to pick up the OBU device specifically comprises: the vehicle owner actively scans the OBU self-service vending machine, submits information by displaying the dynamic two-dimensional code displayed by the interactive unit, and the OBU self-service vending machine notifies all the bound information to a background management system by a remote communication unit; the background management system respectively checks the vehicle information pre-stored in the system according to the received information to be issued for the second time, and the verification is not allowed to be sold; the background management system and the signing bank are called through an interface to verify whether signing with the bank is successful, and if signing fails, the OBU equipment is not allowed to be sold.

4. The secondary distribution system of OBU devices of claim 1, wherein the background management system monitoring OBU vending machine bodies comprises: the built-in GPS unit of the OBU vending machine reports the geographic position of the OBU vending machine in real time, and meanwhile, the geographic position is matched with the geographic position when the vending machine is installed and arranged, and if the geographic position is inconsistent, an alarm is given; and each hardware module of the OBU vending machine is used for self-checking whether the machine of the shipment unit is normal, whether the machine is linked with a background management system, and whether each sub-storage unit is normal or not, and is used for determining whether the OBU vending machine is in a normal working state or not, if the OBU vending machine is in a fault state, fault information is recorded, and maintenance personnel can perform problem positioning and maintenance.

5. The secondary issuing system of an OBU device according to claim 1, wherein the OBU device is provided with a USB interface, and the OBU device performs information interaction with the OBU vending machine through the USB interface; the USB interface is made of magnetic materials and is used for adsorbing the USB interface corresponding to the OBU vending machine.

6. The secondary distribution system of an OBU device according to claim 1, wherein the background management system is capable of generating an order list for a background manager to filter the aggregate order information to generate an order trend graph.

7. The secondary distribution system of the OBU device according to claim 5, wherein the OBU device comprises a main control chip, a key information storage unit;

the main control chip is used for detecting whether the wake-up source IO of the USB is always in an inserted state or not at regular time, and if the main control chip detects a USB hardware connection signal, an instruction for keeping the working state is sent, and OBU equipment is controlled to be in the working state; if the USB hardware channel is disconnected, a dormancy instruction is sent, and the OBU equipment is controlled to be in a dormancy state;

the key information storage unit is used for identifying the original ESAM instruction and replying an instruction result to the MCU main control chip through SPI communication.

8. A method of secondary distribution of an OBU device, said method being adapted to the system of any one of claims 1-7, comprising:

and the vehicle owner acquires the OBU device and activates the OBU device.

9. The method of secondary distribution of an OBU device of claim 8, further comprising:

the background management system can generate an order list for background management personnel to screen summarized order information and generate an order trend graph.

10. The method for secondary distribution of an OBU device according to claim 9, wherein the activating of the OBU device by the vehicle owner comprises the steps of:

after receiving the ciphertext A, the background management system analyzes the ciphertext A into normal primary release information and secondary release information, and judges the validity of the information;

after receiving the ciphertext A, the user terminal analyzes the ciphertext A, and if the primary release information and the secondary release information are effective, the original ESAM is repackaged into a ciphertext B by taking a random number operation instruction, and the ciphertext B is sent to an OBU device main control chip through a USB hardware channel;