Blockchain-based secure communication system for Internet of Vehicles

Abstract

The present invention discloses a vehicle network security communication system based on blockchain, including a vehicle blockchain node module, an edge blockchain node module, a security communication evaluation module and a blockchain service network, characterized in that: the vehicle blockchain node module is used to generate a blockchain data communication transmission node based on a vehicle, the edge blockchain node module is used to generate a blockchain service communication node based on a base station, the security communication evaluation module is used to evaluate the safety of vehicles joining the vehicle network security communication system, the blockchain service network is used to provide a decentralized vehicle information block storage account book, the vehicle blockchain node module is connected to the edge blockchain node module through the blockchain service network, and the edge blockchain node module is electrically connected to the security communication evaluation module. The present invention has the characteristics of strong practicality and high security.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a blockchain-based Internet of Vehicles secure communication system. Background Art

[0002] With the rapid development of the automotive industry, the number of cars on the road is increasing. Today's cars are increasingly reliant on the internet for various services, and driving safety is becoming a major concern for many. Existing cars often travel through sparsely populated, uninhabited areas where there is often no communication signal coverage, making it impossible to connect to the internet for positioning and communication services. If a vehicle breaks down or needs refueling in an area without signal coverage, it could be stranded without the ability to communicate. Even if rescue can be called via satellite phones or other means, the lack of a specific location wastes a significant amount of time searching for the vehicle, and in severe cases, the optimal rescue time may be missed. Furthermore, in the event of an accident, such as falling into a ravine, even if there is signal, the occupants may be unable to communicate due to poor condition. Even if other vehicles are passing by, they may not be detected in time, seriously compromising driving safety. Therefore, it is imperative to design a practical and secure blockchain-based secure communication system for the connected vehicle network. Summary of the Invention

[0003] The purpose of the present invention is to provide a blockchain-based Internet of Vehicles security communication system to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a blockchain-based Internet of Vehicles security communication system, comprising a vehicle blockchain node module, an edge blockchain node module, a security communication evaluation module and a blockchain service network, characterized in that: the vehicle blockchain node module is used to generate a blockchain data communication transmission node based on a vehicle, the edge blockchain node module is used to generate a blockchain service communication node based on a base station, the security communication evaluation module is used to evaluate the safety of vehicles joining the Internet of Vehicles security communication system, the blockchain service network is used to provide a decentralized vehicle information block storage ledger, the vehicle blockchain node module and the edge blockchain node module are connected through the blockchain service network, and the edge blockchain node module is electrically connected to the security communication evaluation module.

[0005] According to the above technical solution, the vehicle blockchain node module includes a vehicle information data communication module, an emergency communication processing module, a signal receiving unit, a signal judgment unit, a magnetoelectric adsorption unit and an order arrangement module. The vehicle information data communication module is used to detect and identify vehicle information and register and transmit it to the blockchain service network. The emergency communication processing module is used to start vehicle emergency communication. The signal receiving unit is used to receive emergency signals from nearby vehicles. The magnetoelectric adsorption unit is used to adsorb several groups of radar reflective materials. The signal judgment unit is electrically connected to the magnetoelectric adsorption unit. The signal judgment unit is used to judge the signal strength and output current. The order arrangement module is used to control the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit.

[0006] According to the above technical solution, the vehicle information data communication module includes an oil level information transmission submodule, a wheel speed information transmission submodule and a navigation information transmission submodule. The oil level information transmission submodule is used to read the vehicle oil level index information and upload it, the wheel speed information transmission submodule is used to read the vehicle wheel speed information and upload it, and the navigation information transmission submodule is used to read the navigation route information when the vehicle is driving and upload it.

[0007] According to the above technical solution, the emergency communication processing module includes a vehicle condition information detection submodule, a judgment unit 1 and a signal transmitting unit. The vehicle condition information detection submodule is electrically connected to multiple sensors in the vehicle. The vehicle condition information detection submodule is used to detect the vehicle condition information of the vehicle. The judgment unit is electrically connected to the vehicle condition information detection submodule. The judgment unit 1 is used to determine whether the vehicle encounters an emergency. The signal transmitting unit is electrically connected to the judgment unit 1. The signal transmitting unit and the signal receiving unit discover each other through Wifi and Bluetooth technology. The signal transmitting unit is used to transmit communication signals.

[0008] According to the above technical solution, the edge blockchain node module includes a data update module, a display module and a disconnection locking module. The data update module is connected to the vehicle information data communication module via a wireless network signal. The data update module is used to update the vehicle information updated by the vehicle information data communication module in real time under the wireless network signal connection. The display module is electrically connected to the data update module. The display module is used to display and disclose the vehicle information details of the blockchain node. The disconnection locking module is electrically connected to the data update module. The disconnection locking module is used to lock and track the vehicle information last updated by the vehicle blockchain node that is disconnected from the edge blockchain node module via a wireless network.

[0009] According to the above technical solution, the security communication evaluation module includes a connection time prediction module, a judgment unit 2, a precise location calculation module and a rescue radar scanning module. The connection time prediction module is electrically connected to the disconnection locking module. The connection time prediction module is used to calculate and predict the time when the vehicle node disconnected from the edge blockchain node will reconnect next time. The judgment unit 2 is electrically connected to the connection time prediction module. The judgment unit 2 is used to determine whether there is an abnormality in the vehicle node locked and tracked by the disconnection locking module, and broadcast the vehicle information with the abnormality in the blockchain service network. The precise location calculation module is used to calculate and evaluate the location information of the lost vehicle, and the rescue radar scanning module is used to scan and determine the specific location information of the lost vehicle.

[0010] According to the above technical solution, the operation method of the blockchain-based vehicle network security communication system includes the following steps:

[0011] Step S1: Start the vehicle to automatically join the Internet of Vehicles security communication system;

[0012] Step S2: Utilize multiple sensors in the vehicle to read the main information of the vehicle while it is driving, and upload it to the blockchain service network in the form of block storage;

[0013] Step S3: The base station is connected to the vehicle signal network and receives and displays vehicle information in real time;

[0014] Step S4: When the vehicle travels to an area without base station signal coverage, the signal coverage edge base station closest to the vehicle records and locks the vehicle whose data cannot be updated. At the same time, after the signal judgment unit loses the communication signal, it stops outputting current to make the magnetoelectric adsorption unit lose the electromagnetic force, and the control force on the adsorption of radar reflective material is released. After the vehicle travels in the area without signal coverage, the inertia generated when turning at a forked road section will cause the magnetoelectric adsorption unit to precipitate some radar reflective material. At the same time, when the turning angle is greater than a fixed value, the sequence arrangement module is triggered to reduce the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit, so that a uniform amount of radar reflective material is scattered at each turn.

[0015] Step S5: Read the information data of the vehicle entering the area without signal coverage, and predict the time when the vehicle will enter the signal coverage area based on the vehicle's driving trajectory;

[0016] Step S6: Determine whether the vehicle has broken down in an area without signal coverage. If a breakdown is confirmed, broadcast the vehicle information on the blockchain service network to alert vehicles near the edge of the signal to pay attention and increase the chance of rescue.

[0017] Step S7: After receiving a call from the occupant of the vehicle that has failed via a satellite phone or other means, the precise location calculation module assesses the location of the vehicle after the failure;

[0018] Step S8: Go to the location of the vehicle after the breakdown along the route, and scan the radar reflective materials through the radar scanning module at the fork in the road. Determine the vehicle's direction based on the location of the radar reflective materials scattered on the roadside, and then follow the precise search and rescue route to speed up the search for the faulty vehicle target and carry out rescue.

[0019] According to the above technical solution, the working method of the emergency communication processing module is:

[0020] A. Use multiple sensors in the vehicle to read the vehicle's condition information;

[0021] B. After a vehicle malfunction occurs, the vehicle condition information detection submodule detects the vehicle condition and sends an electrical signal to the judgment unit 1 for outputting the result judgment;

[0022] C. After determining that the vehicle has a fault, the signal transmitting unit automatically turns on Wi-Fi and Bluetooth transmission to send a distress signal;

[0023] D. When other vehicles participating in the IoV safety communication system pass by the faulty vehicle, the signal receiving unit in the vehicle receives the distress signal, alerting the vehicle to pay attention to rescue efforts, thus preventing the vehicle occupants from being in danger and not being discovered in time, thus missing the best rescue time.

[0024] According to the above technical solution, step S5 further includes:

[0025] Step S51: Read the navigation information of the vehicle blockchain node module and the vehicle's last location A, and simulate all the vehicle's driving routes with reference to the map information;

[0026] Step S52: Find the base station closest to the route signal, determine the location B, and measure the driving distance L from location A to location B;

[0027] Step S53: Read the wheel speed V and oil level U last transmitted by the vehicle blockchain node module;

[0028] Step S54: Calculate and predict the time required for the vehicle to reconnect to the Internet of Vehicles safety communication system Where T is the time value predicted by the connection time prediction module when the vehicle will next enter the signal coverage area, k is the average fuel consumption coefficient of ordinary vehicles. When the fuel level information is sufficient, the connection time prediction module predicts that the vehicle will re-enter the signal coverage area within 1.2T. When the fuel level information is insufficient or the data update module has not refreshed the data within 1.2T of the prediction time, the judgment unit 2 outputs a vehicle fault instruction.

[0029] According to the above technical solution, step S7 further includes that after the faulty vehicle in the area with no signal coverage contacts the base station through a satellite phone or other means, it only needs to provide the time of breakdown, and calculate the distance from the vehicle's last position A to the breakdown position C through the relationship between time, speed and distance, and reversely deduce the breakdown position C based on the vehicle driving route simulated by the vehicle navigation information. When the fuel level is calculated to be insufficient and the faulty vehicle is still out of contact, the breakdown position C is reversed based on the fuel level remaining and the vehicle driving route simulated by the vehicle navigation information, effectively avoiding the possibility of blind rescue due to the lack of navigation information and special reference information in the area with no signal coverage, thereby improving vehicle traffic safety.

[0030] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a vehicle blockchain node module, an edge blockchain node module, a security communication evaluation module and a blockchain service network, can upload vehicle information to the blockchain service network end in real time for monitoring. In the event of dangerous driving conditions such as no signal, the driving trajectory will be locked, and timely and accurate rescue can be obtained when danger occurs. In addition, each vehicle is used as a node, and a distress signal is automatically transmitted to the nearby area when danger occurs. Even if the occupants of the vehicle are in poor condition, they can be discovered in time by people in passing vehicles, thereby improving the rescue speed and achieving the effects of strong practicality and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the system module composition of the present invention. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1The present invention provides a technical solution: a blockchain-based vehicle network security communication system, including a vehicle blockchain node module, an edge blockchain node module, a security communication evaluation module, and a blockchain service network. The system is characterized in that: the vehicle blockchain node module is used to generate a blockchain data communication transmission node on a vehicle basis, the edge blockchain node module is used to generate a blockchain service communication node on a base station basis, the security communication evaluation module is used to evaluate the safety of vehicles participating in the vehicle network security communication system, and the blockchain service network is used to provide a decentralized vehicle information block storage ledger. The vehicle blockchain node module and the edge blockchain node module are connected via the blockchain service network, and the edge blockchain node module is electrically connected to the security communication evaluation module. By providing the vehicle blockchain node module, the edge blockchain node module, the security communication evaluation module, and the blockchain service network, vehicle information can be uploaded to the blockchain service network end for monitoring in real time. In the event of dangerous driving conditions such as no signal, the driving trajectory will be locked, and timely and accurate rescue can be obtained in the event of danger. In addition, each vehicle is used as a node, and a distress signal is automatically transmitted to the nearby area in the event of danger. Even if the occupant is in poor condition, they can be discovered by people in passing vehicles in a timely manner, thereby improving rescue speed and achieving strong practicality and high safety.

[0035] The vehicle blockchain node module includes a vehicle information data communication module, an emergency communication processing module, a signal receiving unit, a signal judgment unit, a magnetoelectric adsorption unit and an order arrangement module. The vehicle information data communication module is used to detect and identify vehicle information and register and transmit it to the blockchain service network. The emergency communication processing module is used to start vehicle emergency communication. The signal receiving unit is used to receive emergency signals from nearby vehicles. The magnetoelectric adsorption unit is used to adsorb several groups of radar reflective materials. The signal judgment unit is electrically connected to the magnetoelectric adsorption unit. The signal judgment unit is used to judge the signal strength and output current. The order arrangement module is used to control the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit.

[0036] The vehicle information data communication module includes an oil level information transmission submodule, a wheel speed information transmission submodule and a navigation information transmission submodule. The oil level information transmission submodule is used to read and upload the vehicle oil level index information, the wheel speed information transmission submodule is used to read and upload the vehicle wheel speed information, and the navigation information transmission submodule is used to read and upload the navigation route information when the vehicle is driving.

[0037] The emergency communication processing module includes a vehicle condition information detection submodule, a judgment unit 1 and a signal transmitting unit. The vehicle condition information detection submodule is electrically connected to multiple sensors in the vehicle. The vehicle condition information detection submodule is used to detect the vehicle condition information of the vehicle. The judgment unit is electrically connected to the vehicle condition information detection submodule. The judgment unit 1 is used to determine whether the vehicle encounters an emergency. The signal transmitting unit is electrically connected to the judgment unit 1. The signal transmitting unit and the signal receiving unit discover each other through Wifi and Bluetooth technology. The signal transmitting unit is used to transmit communication signals.

[0038] The edge blockchain node module includes a data update module, a display module and a disconnection locking module. The data update module is connected to the vehicle information data communication module via a wireless network signal. The data update module is used to update the vehicle information updated by the vehicle information data communication module in real time under the wireless network signal connection. The display module is electrically connected to the data update module. The display module is used to display and publicly display the vehicle information details of the blockchain node. The disconnection locking module is electrically connected to the data update module. The disconnection locking module is used to lock and track the vehicle information last updated by the vehicle blockchain node that is disconnected from the edge blockchain node module via a wireless network.

[0039] The security communication assessment module includes a connection time prediction module, a judgment unit 2, a precise location calculation module and a rescue radar scanning module. The connection time prediction module is electrically connected to the disconnection locking module. The connection time prediction module is used to calculate and predict the time when the vehicle node that is disconnected from the edge blockchain node will reconnect next time. The judgment unit 2 is electrically connected to the connection time prediction module. The judgment unit 2 is used to determine whether there is an abnormality in the vehicle node locked and tracked by the disconnection locking module, and broadcast the vehicle information with the abnormality in the blockchain service network. The precise location calculation module is used to calculate and evaluate the location information of the lost vehicle. The rescue radar scanning module is used to scan and determine the specific location information of the lost vehicle.

[0040] The operation method of the blockchain-based vehicle network security communication system includes the following steps:

[0041] Step S1: Start the vehicle to automatically join the Internet of Vehicles security communication system;

[0042] Step S2: Utilize multiple sensors in the vehicle to read the main information of the vehicle while it is driving, and upload it to the blockchain service network in the form of block storage;

[0043] Step S3: The base station is connected to the vehicle signal network and receives and displays vehicle information in real time;

[0044] Step S4: When the vehicle travels to an area without base station signal coverage, the signal coverage edge base station closest to the vehicle records and locks the vehicle whose data cannot be updated. At the same time, after the signal judgment unit loses the communication signal, it stops outputting current to make the magnetoelectric adsorption unit lose the electromagnetic force, and the control force on the adsorption of radar reflective material is released. After the vehicle travels in the area without signal coverage, the inertia generated when turning at a forked road section will cause the magnetoelectric adsorption unit to precipitate some radar reflective material. At the same time, when the turning angle is greater than a fixed value, the sequence arrangement module is triggered to reduce the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit, so that a uniform amount of radar reflective material is scattered at each turn.

[0045] Step S5: Read the information data of the vehicle entering the area without signal coverage, and predict the time when the vehicle will enter the signal coverage area based on the vehicle's driving trajectory;

[0046] Step S6: Determine whether the vehicle has broken down in an area without signal coverage. If a breakdown is confirmed, broadcast the vehicle information on the blockchain service network to alert vehicles near the edge of the signal to pay attention and increase the chance of rescue.

[0047] Step S7: After receiving a call from the occupant of the vehicle that has failed via a satellite phone or other means, the precise location calculation module assesses the location of the vehicle after the failure;

[0048] Step S8: Go to the location of the vehicle after the breakdown along the route, and scan the radar reflective materials through the radar scanning module at the fork in the road. Determine the vehicle's direction based on the location of the radar reflective materials scattered on the roadside, and then follow the precise search and rescue route to speed up the search for the faulty vehicle target and carry out rescue.

[0049] The working method of the emergency communication processing module is:

[0050] A. Use multiple sensors in the vehicle to read the vehicle's condition information;

[0051] B. After a vehicle malfunction occurs, the vehicle condition information detection submodule detects the vehicle condition and sends an electrical signal to the judgment unit 1 for outputting the result judgment;

[0052] C. After determining that the vehicle has a fault, the signal transmitting unit automatically turns on Wi-Fi and Bluetooth transmission to send a distress signal;

[0053] D. When other vehicles participating in the IoV safety communication system pass by the faulty vehicle, the signal receiving unit in the vehicle receives the distress signal, alerting the vehicle to pay attention to rescue efforts, thus preventing the vehicle occupants from being in danger and not being discovered in time, thus missing the best rescue time.

[0054] Step S5 further comprises:

[0055] Step S51: Read the navigation information of the vehicle blockchain node module and the vehicle's last location A, and simulate all the vehicle's driving routes with reference to the map information;

[0056] Step S52: Find the base station closest to the route signal, determine the location B, and measure the driving distance L from location A to location B;

[0057] Step S53: Read the wheel speed V and oil level U last transmitted by the vehicle blockchain node module;

[0058] Step S54: Calculate and predict the time required for the vehicle to reconnect to the Internet of Vehicles safety communication system Where T is the time value predicted by the connection time prediction module when the vehicle will next enter the signal coverage area, k is the average fuel consumption coefficient of ordinary vehicles. When the fuel level information is sufficient, the connection time prediction module predicts that the vehicle will re-enter the signal coverage area within 1.2T. When the fuel level information is insufficient or the data update module has not refreshed the data within 1.2T of the prediction time, the judgment unit 2 outputs a vehicle fault instruction.

[0059] Step S7 further includes that after a faulty vehicle in an area with no signal coverage contacts a base station through a satellite phone or other means, it only needs to provide the time of breakdown, and calculate the distance from the vehicle's last position A to the breakdown position C through the relationship between time, speed and distance, and reversely deduce the breakdown position C based on the vehicle's driving route simulated by the vehicle navigation information. When the fuel level is calculated to be insufficient and the faulty vehicle is still out of contact, the breakdown position C is reversed based on the fuel level remaining and the vehicle's driving route simulated by the vehicle navigation information, effectively avoiding the possibility of blind rescue due to the lack of navigation information and special reference information in the area with no signal coverage, thereby improving vehicle traffic safety.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A blockchain-based Internet of Vehicles secure communication system, comprising a vehicle blockchain node module, an edge blockchain node module, a secure communication evaluation module and a blockchain service network, characterized in that: The vehicle blockchain node module is used to generate a blockchain data communication transmission node based on a vehicle, the edge blockchain node module is used to generate a blockchain service communication node based on a base station, the security communication assessment module is used to assess the safety of vehicles joining the Internet of Vehicles security communication system, the blockchain service network is used to provide a decentralized vehicle information block storage ledger, the vehicle blockchain node module is connected to the edge blockchain node module via the blockchain service network, and the edge blockchain node module is electrically connected to the security communication assessment module; The vehicle blockchain node module includes a vehicle information data communication module, an emergency communication processing module, a signal receiving unit, a signal judgment unit, a magnetoelectric adsorption unit and an order arrangement module. The vehicle information data communication module is used to detect and identify vehicle information and register and transmit it to the blockchain service network. The emergency communication processing module is used to start vehicle emergency communication. The signal receiving unit is used to receive emergency signals from nearby vehicles. The magnetoelectric adsorption unit is used to adsorb several groups of radar reflective materials. The signal judgment unit is electrically connected to the magnetoelectric adsorption unit. The signal judgment unit is used to judge the signal strength and output current. The order arrangement module is used to control the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit. The vehicle information data communication module includes an oil level information transmission submodule, a wheel speed information transmission submodule and a navigation information transmission submodule. The oil level information transmission submodule is used to read and upload vehicle oil level index information, the wheel speed information transmission submodule is used to read and upload vehicle wheel speed information, and the navigation information transmission submodule is used to read and upload navigation route information when the vehicle is driving; The emergency communication processing module includes a vehicle condition information detection submodule, a judgment unit 1 and a signal transmitting unit. The vehicle condition information detection submodule is electrically connected to multiple sensors in the vehicle. The vehicle condition information detection submodule is used to detect the vehicle condition information of the vehicle. The judgment unit is electrically connected to the vehicle condition information detection submodule. The judgment unit 1 is used to judge whether the vehicle encounters an emergency. The signal transmitting unit is electrically connected to the judgment unit 1. The signal transmitting unit and the signal receiving unit discover each other through Wifi and Bluetooth technology. The signal transmitting unit is used to transmit communication signals.

2. The blockchain-based Internet of Vehicles secure communication system according to claim 1, characterized in that: The edge blockchain node module includes a data update module, a display module and a disconnection locking module. The data update module is connected to the vehicle information data communication module by wireless network signal. The data update module is used to update the vehicle information updated by the vehicle information data communication module in real time under the wireless network signal connection. The display module is electrically connected to the data update module. The display module is used to display and disclose the vehicle information details of the blockchain node. The disconnection locking module is electrically connected to the data update module. The disconnection locking module is used to lock and track the vehicle information last updated by the vehicle blockchain node that is disconnected from the edge blockchain node module by wireless network.

3. The blockchain-based Internet of Vehicles secure communication system according to claim 2, characterized in that: The safety communication assessment module includes a connection time prediction module, a judgment unit 2, a precise location calculation module and a rescue radar scanning module. The connection time prediction module is electrically connected to the disconnection locking module. The connection time prediction module is used to calculate and predict the time when the vehicle node that is disconnected from the edge blockchain node will reconnect next time. The judgment unit 2 is electrically connected to the connection time prediction module. The judgment unit 2 is used to determine whether there is an abnormality in the vehicle node locked and tracked by the disconnection locking module. The precise location calculation module is used to calculate and evaluate the location information of the lost vehicle. The rescue radar scanning module is used to scan and determine the specific location information of the lost vehicle.

4. The communication method of the Internet of Vehicles security communication system based on blockchain as claimed in claim 3 is characterized by: The operation method of the blockchain-based Internet of Vehicles security communication system includes the following steps: Step S1: Start the vehicle to automatically join the Internet of Vehicles safety communication system; Step S2: Utilize multiple sensors in the vehicle to read the main information of the vehicle while it is driving, and upload it to the blockchain service network in the form of block storage; Step S3: The base station is connected to the vehicle signal network and receives and displays vehicle information in real time; Step S4: When the vehicle travels to an area without base station signal coverage, the signal coverage edge base station closest to the vehicle records and locks the vehicle whose data cannot be updated. At the same time, after the signal judgment unit loses the communication signal, it stops outputting current to make the magnetoelectric adsorption unit lose the electromagnetic force, and the adsorption control force of the radar reflective material is released. After the vehicle travels in the area without signal coverage, the inertia generated when turning at a forked section will cause the magnetoelectric adsorption unit to precipitate part of the radar reflective material and scatter it. At the same time, when the turning angle is greater than a fixed value, the sequence arrangement module is triggered to reduce the electromagnetic adsorption area of ​​the magnetoelectric adsorption unit, so that the radar reflective material is evenly scattered at each turn; Step S5: reading the information data of the vehicle entering the area without signal coverage, and predicting the time of entering the signal coverage area according to the vehicle's driving trajectory; Step S6: Determine whether the vehicle has a fault in an area without signal coverage. After determining that a fault has occurred, broadcast the vehicle information in the blockchain service network to remind vehicles near the edge of the signal to pay attention and observe, thereby increasing the chance of rescue; Step S7: After receiving a call from the occupant of the vehicle that has failed via a satellite phone or other means, the precise location calculation module evaluates the location of the vehicle after the failure; Step S8: Go along the route to the location of the vehicle after the breakdown, and scan the radar reflective materials through the radar scanning module at the fork in the road, determine the vehicle's turn according to the location of the radar reflective materials scattered on the roadside, and then follow the precise search and rescue route to speed up the search for the faulty vehicle target and carry out rescue.

5. The communication method of the blockchain-based Internet of Vehicles security communication system according to claim 4 is characterized in that: The working method of the emergency communication processing module is: A. Use multiple sensors in the vehicle to read the vehicle's condition information; B. After the vehicle breaks down, the vehicle condition information detection submodule detects the vehicle condition and sends an electrical signal to the judgment unit 1 for output result judgment; C. After determining that the vehicle has a fault, the signal transmitting unit automatically turns on Wifi and Bluetooth transmission to send a distress signal; D. When other vehicles that have joined the Internet of Vehicles safety communication system pass by the faulty vehicle, the signal receiving unit in the vehicle receives the distress signal, reminding the vehicle to pay attention to rescue, so as to avoid the vehicle occupants being in a dangerous state and not being discovered in time, thus missing the best rescue time.

6. The communication method of the blockchain-based Internet of Vehicles secure communication system according to claim 5, characterized in that: The step S5 further comprises: Step S51: Read the navigation information of the vehicle blockchain node module and the vehicle's last position A, and simulate all possible vehicle driving routes with reference to the map information; Step S52: Find the base station that can cover the route signal, determine the location B, and measure the driving route distance from location A to location B ; Step S53: Read the wheel speed last transmitted by the vehicle blockchain node module and oil level ; Step S54: Calculate and predict the time required for the vehicle to reconnect to the Internet of Vehicles safety communication system , where It is the time value predicted by the connection time prediction module for the next time the vehicle enters the signal coverage area. is the average fuel consumption coefficient of ordinary vehicles. When the fuel level information is detected to be sufficient, the continuous time prediction module predicts the time The vehicle re-enters the signal coverage area, when the fuel level information is insufficient or the predicted time is reached If the internal data updating module has not refreshed the data, the second judging unit outputs a vehicle fault instruction.

7. The communication method of the blockchain-based Internet of Vehicles security communication system according to claim 6 is characterized by: The step S7 further includes that after the faulty vehicle in the area without signal coverage contacts the base station through a satellite phone or other means, it only needs to provide the time of anchoring, and calculate the distance from the vehicle's last position A to the anchoring position C through the relationship between time, speed and distance, and reversely deduce the anchoring position C based on the vehicle's driving route simulated by the vehicle navigation information; when the oil level is calculated to be insufficient and the faulty vehicle is still out of contact, reversely deduce the anchoring position C based on the oil level remaining combined with the vehicle's driving route simulated by the vehicle navigation information.

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