Driving safety monitoring system based on Beidou short message

Abstract

The invention relates to the technical field of communication, in particular to a driving safety monitoring system based on Beidou short messages, which comprises a driving behavior video monitoring device, a control module, a rack-mounted server, a vehicle-mounted data monitoring platform arranged on the rack-mounted server, a Beidou third satellite, a Beidou third vehicle-mounted terminal and the like. A driving behavior video monitoring device is installed on each monitored vehicle to capture and record driving behavior data of a driver in real time, and the data is reported to a Beidou No.3 vehicle-mounted terminal and a Beidou No.3 short message message technology through judgment and encryption processing of a control module, so that the driving behavior data of the driver can be instructed to the platform side through a Beidou No.3 vehicle-mounted terminal and the Beidou No.3 short message message technology. And then the data is transmitted to the vehicle-mounted data monitoring platform, and the platform decrypts the data through the national secret encryption gateway and carries out deep analysis and processing, so that comprehensive and accurate driving behavior supervision is realized, the problem of real-time state monitoring in an environment without an operator network is solved, and high safety and processing comprehensiveness of the data are ensured.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and more specifically to a driving safety monitoring system based on Beidou short messages. Background Art

[0002] With the current vigorous development of social economy and the significant improvement of people's living standards, vehicles have become an indispensable part of people's daily lives. However, drivers may become fatigued or perform other unsafe operations due to long-term driving, making vehicle driving safety issues increasingly prominent. In view of this situation, in-depth analysis of the vehicle driving safety situation, summarizing the existing problems and proposing corresponding countermeasures are of great significance to improving the level of road safety, and can also provide valuable reference for relevant departments; At present, most driving safety monitoring measures mainly rely on installing safety driving instruments and transmitting data through mobile operator networks (such as Figure 6 As shown in the figure, this method can monitor and warn the driver's dangerous behavior in real time during driving. However, when the vehicle travels to a remote area without ground network coverage, the conventional operator network cannot cover it, and the monitoring video transmission function based on the 4G / 5G network cannot be realized. This makes it impossible for the management end to obtain the real-time status of the vehicle and the driver in time. Moreover, this method may not be able to fully monitor all driving behaviors, and there are monitoring blind spots, making it difficult to detect and correct unsafe driving habits in time. In addition, this approach has the following problems: during data transmission, there may be a lack of adequate security measures, resulting in a higher risk of data leakage and tampering; in terms of key management, there may be deficiencies such as untimely key updates and key leakage, which affect the security and reliability of data transmission; in terms of data processing and analysis, it may be relatively simple and unable to meet the needs of complex scenarios, and cannot provide accurate data support for the management side. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problems existing in the existing driving safety monitoring system, such as dependence on the operator network, monitoring blind spots, data security issues, and insufficient data processing and analysis. The present invention provides a driving safety monitoring system based on Beidou short messages. The system can realize real-time status monitoring of vehicles and drivers through Beidou satellite short message communication technology in areas without ground operator network coverage, thereby improving driving safety and ensuring high data security and comprehensive processing and analysis.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The present invention proposes a driving safety monitoring system based on Beidou short messages, comprising a driving behavior video monitoring device, a control module, a rack-mounted server, and a vehicle-mounted data monitoring platform provided on the rack-mounted server, wherein the monitoring system also comprises a Beidou-3 satellite, a Beidou-3 vehicle-mounted terminal, a Beidou-3 rack-mounted command machine, a national encryption module, and a national encryption gateway; The control module is connected to the BeiDou-3 vehicle terminal, the BeiDou-3 vehicle terminal, and the national secret encryption module respectively by means of serial port connection communication, and is used to obtain the monitoring results analyzed by the driving behavior video monitoring device, the results are driving behavior data, and determine whether the driving behavior data is dangerous driving information, and then use the national secret encryption module to encrypt the data of the monitoring results, and then use the BeiDou-3 vehicle terminal to transmit the encrypted data to the BeiDou-3 rack-mounted command machine in the form of BeiDou short messages through the BeiDou-3 satellite; The BeiDou-3 vehicle-mounted terminal and the BeiDou-3 rack-mounted command machine are connected via the BeiDou-3 satellite system link. The BeiDou-3 vehicle-mounted terminal uses BeiDou-3 short message for data communication. Each BeiDou-3 vehicle-mounted terminal is equipped with an independent BeiDou communication card, and the BeiDou card number of the BeiDou communication card is used as the identity of the BeiDou vehicle-mounted terminal. The BeiDou-3 rack-mounted command machine is connected to the rack-mounted server via serial communication; The national secret encryption gateway is connected to the rack-mounted server through network port communication; The vehicle-mounted data monitoring platform is connected to the BeiDou-3 rack-mounted command machine through a serial port; The vehicle data monitoring platform communicates with the national encryption gateway via TCP; The vehicle-mounted data monitoring platform is set on a rack-mounted server, which is used to control the Beidou-3 rack-mounted command machine to send and receive data information, and at the same time control the national secret encryption gateway to perform data encryption and decryption processing. It is also used for the parsing and analysis of communication data and the management of various vehicle-mounted monitoring data.

[0005] As a preferred technical solution of the present invention, the driving behavior video monitoring device, the control module, the national secret encryption module and the Beidou-3 vehicle-mounted terminal are all set as one and are all configured on the driving vehicle.

[0006] As a preferred technical solution of the present invention, the execution steps of the control module are as follows: a) The control module starts and the program service of the control module starts; b) The control module initializes the communication link, which includes the communication link between the control module and the driving behavior video monitoring device, the national secret encryption module and the Beidou-3 vehicle terminal; c) The control module monitors the monitoring results of the driving behavior video monitoring device in real time; d) The control module determines whether there is a monitoring result, if yes, jump to step e), if no, return to step c); e) The control module determines whether the monitoring result is dangerous driving information, if yes, jump to step f), if no, return to step c); f) The control module determines whether the secret key information of the national secret encryption module is valid, if yes, jump to step h), if no, jump to step g); g) The control module synchronizes the key information of the national secret encryption module with the vehicle data monitoring platform, and returns to step f); h) The control module transmits the dangerous driving information to the national encryption module for encryption into an encrypted file; i) The control module stores the encrypted file in the BeiDou short message queue of the BeiDou-3 satellite through the BeiDou-3 vehicle terminal; j) The control module waits for the communication conditions of the BeiDou-3 vehicle terminal, and determines whether the current communication conditions of the BeiDou-3 vehicle terminal meet the sending conditions of the BeiDou-3 satellite. If yes, jump to step k); if not, continue to wait until the sending conditions of the BeiDou-3 satellite are met, where the sending conditions are: the time interval between the BeiDou-3 vehicle terminal and the last communication with the BeiDou-3 satellite must be greater than one minute, and there must be a valid satellite signal at present; k) The control module encapsulates and reports data according to the BeiDou short message communication protocol of the BeiDou-3 satellite; l) Return to step c).

[0007] As a preferred technical solution of the present invention, the specific steps of synchronizing the key information of the national secret encryption module between the control module and the vehicle-mounted data monitoring platform in step g) are as follows: Ⅰ) The control module starts the key information synchronization process of the national secret encryption module; II) The control module sends a request to the vehicle data monitoring platform and confirms that the key information is in a valid state; III) The vehicle data monitoring platform determines whether the key information requested by the control module is valid. If yes, it jumps to VIII), if not, it jumps to the next step; IV) The vehicle data monitoring platform sends a command to the control module requesting an update and synchronizing the new key information; V) The control module receives the instruction of the new key information and sends a confirmation instruction to the vehicle data monitoring platform to update the new key information; VI) The vehicle data monitoring platform determines whether the bidirectional synchronization of the secret key information is successful. If yes, it jumps to the next step. If no, it returns to step IV); Ⅶ) The vehicle data monitoring platform sends the key information to the control module to confirm the completion of the instruction; VIII) The control module activates the key information after confirming the valid key information.

[0008] As a preferred technical solution of the present invention, the key information of the national secret encryption module is the national secret SM4 key.

[0009] As a preferred technical solution of the present invention, the execution steps of the vehicle-mounted data monitoring platform are as follows: a. Start the service; b. Initialize the driving behavior video monitoring device and load its related parameters; c. Monitor the BeiDou-3 rack-mounted control aircraft and continuously receive data information; d. Determine whether the data is encrypted data. If yes, jump to the next step. If no, return to step c. e. Call the network encryption gateway to decrypt the encrypted data. If the decryption fails, the abnormal logic will jump to step j. If the decryption is successful and the data is plain text, jump to the next step; f. Determine whether the decrypted plaintext belongs to driving behavior data. If yes, jump to the next step; if no, jump to step i; g. Perform platform logic processing on driving behavior safety data and generate corresponding data judgment records; h. Process one frame of data and jump to the next step; i. End; j. Due to incorrect key information, the decryption process performs abnormal data processing and jumps to step i.

[0010] As a preferred technical solution of the present invention, the driving behavior video monitoring device performs the following steps: A. Start the service; B. Turn on the camera in the driving behavior video monitoring device to monitor the video screen in real time; C. Every N milliseconds, N ≥ 500 milliseconds, capture a frame of image from the video stream; D. Determine whether there is a person in the picture. If yes, jump to the next step. If no, return to step C. E. The image is passed to the behavior detection algorithm function in the driving behavior video monitoring device for matching calculation to determine whether it belongs to driving behavior data. If yes, jump to the next step; otherwise, return to step C; F. Classify the driving behavior data according to type and package it into a transmission protocol data format; G. Transmit data to the control module through the serial port; H. Skip to step C.

[0011] Any of the above-mentioned driving safety monitoring systems is used to supervise the driving safety behavior of special transport vehicle drivers in areas without signals.

[0012] The beneficial effects of the present invention are as follows: the present invention installs a driving behavior video monitoring device on each monitored vehicle to capture and record the driver's driving behavior data in real time, and judges and encrypts it through a control module, and uses the BeiDou-3 vehicle-mounted terminal and BeiDou-3 short message technology to report the data to the BeiDou-3 rack-mounted command machine on the platform side, and then transmits it to the vehicle-mounted data monitoring platform. The platform decrypts the data through a national secret encryption gateway, conducts in-depth analysis and processing, and realizes comprehensive and accurate driving behavior supervision. The present invention solves the problem of real-time status monitoring in an operator-free network environment, ensures high data security and comprehensive processing, provides technical support for improving driving safety, and provides traffic management departments and drivers with more reliable driving monitoring solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a system block diagram of the present invention.

[0014] Figure 2 The flowchart is a control module execution step of the present invention.

[0015] Figure 3 The present invention is a flowchart of the specific steps for synchronizing the secret key information of the national secret encryption module with the vehicle-mounted data monitoring platform.

[0016] Figure 4 The present invention is a flowchart of the steps executed by the vehicle data monitoring platform.

[0017] Figure 5 The present invention is a flowchart of the steps executed by the driving behavior video monitoring device of the present invention.

[0018] Figure 6 This is the block diagram of the traditional driving safety monitoring system. DETAILED DESCRIPTION

[0019] Reference Figure 1 As shown, the present invention proposes a driving safety monitoring system based on Beidou short messages, including a driving behavior video monitoring device, a control module, a rack server, and a vehicle data monitoring platform provided on the rack server, wherein the monitoring system also includes Beidou-3 satellite, Beidou-3 vehicle-mounted terminal, Beidou-3 rack-mounted command machine, national encryption module and national encryption gateway; The control module is connected to the BeiDou-3 vehicle terminal, the BeiDou-3 vehicle terminal, and the national secret encryption module respectively by means of serial port connection communication, and is used to obtain the monitoring results analyzed by the driving behavior video monitoring device, the results are driving behavior data, and determine whether the driving behavior data is dangerous driving information, and then use the national secret encryption module to encrypt the data of the monitoring results, and then use the BeiDou-3 vehicle terminal to transmit the encrypted data to the BeiDou-3 rack-mounted command machine in the form of BeiDou short messages through the BeiDou-3 satellite; The BeiDou-3 vehicle-mounted terminal and the BeiDou-3 rack-mounted command machine are connected via the BeiDou-3 satellite system link. The BeiDou-3 vehicle-mounted terminal uses BeiDou-3 short message for data communication. Each BeiDou-3 vehicle-mounted terminal is equipped with an independent BeiDou communication card, and the BeiDou card number of the BeiDou communication card is used as the identity of the BeiDou vehicle-mounted terminal. The BeiDou-3 rack-mounted command machine is connected to the rack-mounted server via serial communication; The national secret encryption gateway is connected to the rack-mounted server through network port communication; The vehicle-mounted data monitoring platform is connected to the BeiDou-3 rack-mounted command machine through a serial port; The vehicle data monitoring platform communicates with the national encryption gateway via TCP; The vehicle-mounted data monitoring platform is set on a rack-mounted server, which is used to control the Beidou-3 rack-mounted command machine to send and receive data information, and at the same time control the national secret encryption gateway to perform data encryption and decryption processing. It is also used for the parsing and analysis of communication data and the management of various vehicle-mounted monitoring data.

[0020] Among them, the driving behavior video monitoring device, control module, national secret encryption module and Beidou-3 vehicle-mounted terminal are all set as one and are all configured in the driving vehicle.

[0021] Reference Figure 2 As shown, the execution steps of the control module are as follows: a) The control module starts and the program service of the control module starts; b) The control module initializes the communication link, which includes the communication links between the control module and the driving behavior video monitoring device, the national secret encryption module and the Beidou-3 vehicle terminal; c) The control module monitors the monitoring results of the driving behavior video monitoring device in real time; d) The control module determines whether there is a monitoring result, if yes, jumps to step e), if no, returns to step c); e) The control module determines whether the monitoring result is dangerous driving information, if yes, jump to step f), if no, return to step c); f) The control module determines whether the secret key information of the national secret encryption module is valid, if yes, jump to step h); if no, jump to step g); g) The control module synchronizes the key information of the national secret encryption module with the vehicle data monitoring platform, and returns to step f); h) The control module transmits the dangerous driving information to the national encryption module for encryption into an encrypted file; i) The control module stores the encrypted file in the BeiDou short message queue of the BeiDou-3 satellite through the BeiDou-3 vehicle-mounted terminal; j) The control module waits for the communication conditions of the BeiDou-3 vehicle-mounted terminal, and determines whether the current communication conditions of the BeiDou-3 vehicle-mounted terminal meet the sending conditions of the BeiDou-3 satellite. If yes, jump to step k), if not, continue to wait until the sending conditions of the BeiDou-3 satellite are met, wherein the sending conditions are: the time interval between the BeiDou-3 vehicle-mounted terminal and the last communication with the BeiDou-3 satellite must be greater than one minute, and a valid satellite signal must be available at present; k) The control module encapsulates and reports data according to the Beidou short message communication protocol of the Beidou-3 satellite; l) Return to step c).

[0022] Reference Figure 3 As shown, the specific steps of synchronizing the key information of the national secret encryption module between the control module and the vehicle-mounted data monitoring platform in step g) are as follows: 1) The control module starts the key information synchronization process of the national secret encryption module; II) The control module sends a request to the vehicle data monitoring platform and confirms that the key information is in a valid state; III) The vehicle data monitoring platform determines whether the key information requested by the control module is valid. If yes, it jumps to VIII), if no, it jumps to the next step; IV) The vehicle data monitoring platform sends a command to the control module requesting an update and synchronizing new secret key information; V) The control module receives the instruction of the new secret key information and sends the instruction of confirming the update of the new secret key information to the vehicle data monitoring platform; VI) The vehicle data monitoring platform determines whether the bidirectional synchronization of the secret key information is successful. If yes, it jumps to the next step; if no, it returns to step IV); VII) The vehicle data monitoring platform sends a secret key information confirmation command to the control module; VIII) The control module activates the key information after confirming the valid key information.

[0023] Among them, the key information of the national secret encryption module is the national secret SM4 key.

[0024] Reference Figure 4As shown, the execution steps of the vehicle-mounted data monitoring platform are as follows: a. Start the service; b. Initialize the driving behavior video monitoring device and load its related parameters; c. Monitor the BeiDou-3 rack-mounted control aircraft and continuously receive data information; d. Determine whether the data is encrypted data. If yes, jump to the next step. If no, return to step c. e. Call the network encryption gateway to decrypt the encrypted data. If the decryption fails, the abnormal logic will jump to step j. If the decryption is successful and the data is plain text, jump to the next step; f. Determine whether the decrypted plaintext belongs to driving behavior data. If yes, jump to the next step; if no, jump to step i; g. Perform platform logic processing on driving behavior safety data and generate corresponding data judgment records; h. Process one frame of data and jump to the next step; i. End; j. Due to incorrect key information, the decryption process performs abnormal data processing and jumps to step i.

[0025] Reference Figure 5 As shown, the driving behavior video monitoring device executes the following steps: A. Start the service; B. Turn on the camera in the driving behavior video monitoring device to monitor the video screen in real time; C. Every N milliseconds, N ≥ 500 milliseconds, capture a frame of image from the video stream; D. Determine whether there is a person in the picture. If yes, jump to the next step. If no, return to step C. E. The image is passed to the behavior detection algorithm function in the driving behavior video monitoring device for matching calculation to determine whether it belongs to driving behavior data. If yes, jump to the next step; otherwise, return to step C; F. Classify the driving behavior data according to type and package it into a transmission protocol data format; G. Transmit data to the control module through the serial port; H. Go to step C.

[0026] The present invention aims to comprehensively solve multiple technical problems existing in existing driving safety monitoring systems, including but not limited to excessive reliance on operator networks, monitoring blind spots, data security defects, and limitations in data processing and analysis capabilities. To meet these challenges, the present invention proposes a driving safety monitoring system based on Beidou short messages. The core of the system is to use Beidou short message communication technology. This technology enables the system to monitor the status of vehicles and drivers in a stable and real-time manner in remote areas without ground operator network coverage, thereby greatly improving driving safety. The detailed working principle of the driving safety monitoring system of the present invention is as follows: A driving behavior video monitoring device is installed on each monitored vehicle. This device can capture and record the driver's driving behavior in real time, generate driving behavior data as monitoring results, and then transmit these monitoring results to the control module; After receiving the driving behavior data, the control module will first determine whether the data contains dangerous driving information. If it is determined to be dangerous driving information, the control module will further manage the national secret encryption module and use it to encrypt the data to generate ciphertext. It is worth noting that the control module communicates with the Beidou-3 vehicle terminal and the national secret encryption module through serial port connections, ensuring the stability and reliability of data transmission; The encrypted ciphertext is then transmitted to the BeiDou-3 vehicle-mounted terminal. Each BeiDou-3 vehicle-mounted terminal is equipped with an independent BeiDou communication card. The BeiDou card number on the card serves as the unique identity of the vehicle-mounted terminal. The BeiDou-3 vehicle-mounted terminal uses BeiDou-3 short message for data communication and reports the ciphertext to the BeiDou-3 rack-mounted control machine on the platform side through the BeiDou-3 satellite system link. After receiving the ciphertext data reported by the vehicle terminal, the BeiDou-3 rack-mounted command machine will further transmit this data to the vehicle-mounted data monitoring platform on the rack-mounted server through serial communication. At the same time, the vehicle-mounted data monitoring platform also communicates with the national encryption gateway through TCP; On the vehicle data monitoring platform side, the national encryption gateway is responsible for decrypting the received ciphertext and restoring the original plaintext information. The vehicle data monitoring platform will conduct in-depth analysis and processing of these plaintext information, thereby achieving effective collection and management of driving behavior information of drivers in areas without operator network signals; In order to ensure comprehensive supervision of the behaviors of multiple drivers, the present invention adheres to the principle of installing a set of driving behavior video monitoring devices on each vehicle when applied. In this way, no matter how many vehicles there are, the system can capture and monitor the driving behavior of each driver in real time to ensure the comprehensiveness and accuracy of supervision; In addition, the control module of the present invention also includes a series of detailed steps during execution, such as initializing the communication link, monitoring the monitoring results of the driving behavior video monitoring device in real time, determining whether the monitoring results are dangerous driving information, encryption processing, data packaging and reporting, etc. These steps together ensure the efficient and stable operation of the system; At the same time, the vehicle data monitoring platform also performs a series of complex steps, including initializing the driving behavior video monitoring device, monitoring the Beidou-3 rack-mounted command machine to receive data information, decryption processing, judging whether the decrypted plain text belongs to driving behavior data, platform logic processing, and abnormal data processing. These steps together ensure that the system can accurately and comprehensively process and analyze driving behavior data; To sum up, the present invention successfully solves the technical problems in the existing driving safety monitoring system by introducing Beidou short message communication technology. The system can not only realize real-time status monitoring in an operator-free network environment, but also ensure the high security of data and the comprehensiveness of processing and analysis. These innovations together provide strong technical support for improving driving safety and provide traffic management departments and drivers with a safer and more reliable driving monitoring solution.

[0027] Any of the above-mentioned driving safety monitoring systems is used to supervise the driving safety behavior of special transport vehicle drivers in areas without signals. Special transport vehicles may include dangerous goods transport vehicles, cold chain logistics vehicles, emergency rescue vehicles, etc. They usually need to operate in remote, complex or incomplete signal coverage areas, and have extremely high requirements for driving safety.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A driving safety monitoring system based on Beidou short message, comprising a driving behavior video monitoring device, a control module, a rack server and a vehicle-mounted data monitoring platform provided on the rack server, characterized in that: The monitoring system also includes BeiDou-3 satellite, BeiDou-3 vehicle-mounted terminal, BeiDou-3 rack-mounted command machine, national secret encryption module and national secret encryption gateway; The control module is connected to the BeiDou-3 vehicle terminal, the BeiDou-3 vehicle terminal, and the national secret encryption module respectively by means of serial port connection communication, and is used to obtain the monitoring results analyzed by the driving behavior video monitoring device, the results are driving behavior data, and determine whether the driving behavior data is dangerous driving information, and then use the national secret encryption module to encrypt the data of the monitoring results, and then use the BeiDou-3 vehicle terminal to transmit the encrypted data to the BeiDou-3 rack-mounted command machine in the form of BeiDou short messages through the BeiDou-3 satellite; The BeiDou-3 vehicle-mounted terminal and the BeiDou-3 rack-mounted command machine are connected via the BeiDou-3 satellite system link. The BeiDou-3 vehicle-mounted terminal uses BeiDou-3 short message for data communication. Each BeiDou-3 vehicle-mounted terminal is equipped with an independent BeiDou communication card, and the BeiDou card number of the BeiDou communication card is used as the identity of the BeiDou vehicle-mounted terminal. The BeiDou-3 rack-mounted command machine is connected to the rack-mounted server via serial communication; The national secret encryption gateway is connected to the rack-mounted server through network port communication; The vehicle-mounted data monitoring platform is connected to the BeiDou-3 rack-mounted command machine through a serial port; The vehicle data monitoring platform communicates with the national encryption gateway via TCP; The vehicle-mounted data monitoring platform is set on a rack-mounted server, which is used to control the Beidou-3 rack-mounted command machine to send and receive data information, and at the same time control the national secret encryption gateway to perform data encryption and decryption processing. It is also used for the parsing and analysis of communication data and the management of various vehicle-mounted monitoring data.

2. A driving safety monitoring system based on Beidou short message according to claim 1, characterized in that: The driving behavior video monitoring device, control module, national secret encryption module and Beidou-3 vehicle-mounted terminal are all set as one and are all configured in the driving vehicle.

3. A driving safety monitoring system based on Beidou short message according to claim 1, characterized in that: The execution steps of the control module are as follows: a) The control module starts and the program service of the control module starts; b) The control module initializes the communication link, which includes the communication link between the control module and the driving behavior video monitoring device, the national secret encryption module and the Beidou-3 vehicle terminal; c) The control module monitors the monitoring results of the driving behavior video monitoring device in real time; d) The control module determines whether there is a monitoring result, if yes, jump to step e), if no, return to step c); e) The control module determines whether the monitoring result is dangerous driving information, if yes, jump to step f), if no, return to step c); f) The control module determines whether the secret key information of the national secret encryption module is valid, if yes, jump to step h); if no, jump to step g); g) The control module synchronizes the key information of the national secret encryption module with the vehicle data monitoring platform, and returns to step f); h) The control module transmits the dangerous driving information to the national encryption module for encryption into an encrypted file; i) The control module stores the encrypted file in the BeiDou short message queue of the BeiDou-3 satellite through the BeiDou-3 vehicle terminal; j) The control module waits for the communication conditions of the BeiDou-3 vehicle terminal, and determines whether the current communication conditions of the BeiDou-3 vehicle terminal meet the sending conditions of the BeiDou-3 satellite. If yes, jump to step k); if not, continue to wait until the sending conditions of the BeiDou-3 satellite are met, where the sending conditions are: the time interval between the BeiDou-3 vehicle terminal and the last communication with the BeiDou-3 satellite must be greater than one minute, and there must be a valid satellite signal at present; k) The control module encapsulates and reports data according to the BeiDou short message communication protocol of the BeiDou-3 satellite; l) Return to step c).

4. A driving safety monitoring system based on Beidou short message according to claim 3, characterized in that: The specific steps of synchronizing the key information of the national encryption module between the control module and the vehicle-mounted data monitoring platform in step g) are as follows: Ⅰ) The control module starts the key information synchronization process of the national secret encryption module; II) The control module sends a request to the vehicle data monitoring platform and confirms that the key information is in a valid state; III) The vehicle data monitoring platform determines whether the key information requested by the control module is valid. If yes, it jumps to VIII), if not, it jumps to the next step; IV) The vehicle data monitoring platform sends a command to the control module requesting an update and synchronizing the new key information; V) The control module receives the instruction of the new key information and sends a confirmation instruction to the vehicle data monitoring platform to update the new key information; VI) The vehicle data monitoring platform determines whether the bidirectional synchronization of the secret key information is successful. If yes, it jumps to the next step. If no, it returns to step IV); Ⅶ) The vehicle data monitoring platform sends the key information to the control module to confirm the completion of the instruction; VIII) The control module activates the key information after confirming the valid key information.

5. The driving safety monitoring system based on Beidou short message according to claim 3 is characterized in that: The key information of the national secret encryption module is the national secret SM4 key.

6. A driving safety monitoring system based on Beidou short message according to claim 1, characterized in that: The execution steps of the vehicle data monitoring platform are as follows: a. Start the service; b. Initialize the driving behavior video monitoring device and load its related parameters; c. Monitor the BeiDou-3 rack-mounted control aircraft and continuously receive data information; d. Determine whether the data is encrypted data. If yes, jump to the next step. If no, return to step c. e. Call the network encryption gateway to decrypt the encrypted data. If the decryption fails, the abnormal logic will jump to step j. If the decryption is successful and the data is plain text, jump to the next step; f. Determine whether the decrypted plaintext belongs to driving behavior data. If yes, jump to the next step; if no, jump to step i; g. Perform platform logic processing on driving behavior safety data and generate corresponding data judgment records; h. Process one frame of data and jump to the next step; i. End; j. Due to incorrect key information, the decryption process performs abnormal data processing and jumps to step i.

7. The driving safety monitoring system based on Beidou short message according to claim 1 is characterized in that: The driving behavior video monitoring device performs the following steps: A. Start the service; B. Turn on the camera in the driving behavior video monitoring device to monitor the video screen in real time; C. Every N milliseconds, N ≥ 500 milliseconds, capture a frame of image from the video stream; D. Determine whether there is a person in the picture. If yes, jump to the next step. If no, return to step C. E. The image is passed to the behavior detection algorithm function in the driving behavior video monitoring device for matching calculation to determine whether it belongs to driving behavior data. If yes, jump to the next step; otherwise, return to step C; F. Classify the driving behavior data according to type and package it into a transmission protocol data format; G. Transmit data to the control module through the serial port; H. Go to step C.

Images