A data transmission method for a video acquisition system

Abstract

The present application provides a data transmission method for a video acquisition system. First, an Internet of Things communicator inside the video acquisition system is used to identify available wireless networks. Then, the available wireless networks are authenticated using the Internet of Things communicator. If the available wireless network authentication is passed, the available wireless network is connected through the wireless network communicator so that the video data collected by the imaging device can be uploaded to the server through the available wireless network. Among them, the video acquisition system can be powered by a rechargeable battery, thereby ensuring that the video acquisition device can still be used normally in a working environment without a power supply device. At the same time, the wireless network to be connected can be authenticated before connecting to the wireless network to ensure the security of video data transmission.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to a data transmission method based on a video acquisition system. Background Art

[0002] In some temporary construction sites, such as large-scale maintenance sites of nuclear power plants and other working environments, it is usually necessary to conduct temporary video monitoring of personnel, equipment, the environment, etc., in order to timely discover potential hazards and problems existing in the working environment through video data. During the use of the video acquisition system, due to factors such as the lack of power supply facilities around, it is unable to connect to the power supply and operate normally. At this time, the video data acquisition work cannot be achieved, which will seriously affect the normal work.

[0003] Moreover, in some working environments with safety rule requirements, such as nuclear power plants, the emission power range of radio frequency signals of terminal devices is specified. Generally, common wireless video acquisition systems are difficult to meet these safety regulations, and the power of the radio frequency signals they emit will seriously exceed the safety rule range. If these terminal devices are directly used, the precision instruments in the nuclear power plant will be damaged due to interference from radio frequency signals, and even more serious consequences such as nuclear pollution may occur. However, if in order to comply with safety regulations, the video signal transmission function of the video acquisition system is turned off within the scope of the nuclear power plant, and only the video data acquisition function is retained, the function of video monitoring will be lost, affecting normal work. Summary of the Invention

[0004] This application provides a data transmission method for a video acquisition system to ensure the normal communication of the video acquisition system.

[0005] This application provides a data transmission method for a video acquisition system, and the method includes:

[0006] Using the Internet of Things communicator inside the video acquisition system to identify available wireless networks. The video acquisition system is powered by a rechargeable battery. The video acquisition system includes a main control module for controlling internal components, a camera device for collecting video data, a wireless network communicator disposed inside the main control module for wireless network data interaction, and an Internet of Things communicator for Internet of Things data interaction;

[0007] Using the Internet of Things communicator to authenticate the available wireless networks;

[0008] If the available wireless network authentication is passed, then connect to the available wireless network through the wireless network communicator, so that the video data collected by the camera device can be uploaded to the server through the available wireless network.

[0009] Optionally, the identification of available wireless networks using the Internet of Things communicator inside the video acquisition system includes:

[0010] Receiving Internet of Things signals through the Internet of Things communicator;

[0011] Determining a target Internet of Things signal from the Internet of Things signals, where the target Internet of Things signal is an Internet of Things signal that matches the protocol of the Internet of Things communicator;

[0012] Based on the target Internet of Things signal, determining that the wireless network corresponding to the Internet of Things signal is an available wireless network. Optionally, the authentication of the available wireless network using the Internet of Things communicator includes:

[0013] Encrypting the first verification plaintext through the encryption and decryption module in the Internet of Things communicator to obtain the first encrypted plaintext;

[0014] Sending the first encrypted plaintext to the base station corresponding to the available wireless network through the Internet of Things communicator, so that the base station generates the first feedback information with the first digital signature based on the first encrypted plaintext;

[0015] Receiving the first feedback information sent by the base station through the Internet of Things communicator;

[0016] Decrypting the first data signature in the first feedback information through the encryption and decryption module to authenticate the available wireless network.

[0017] Optionally, the authentication of the available wireless network using the Internet of Things communicator includes:

[0018] Receiving the second encrypted plaintext sent by the base station corresponding to the available wireless network through the Internet of Things communicator, where the second encrypted plaintext is obtained by the base station encrypting the second verification plaintext;

[0019] Decrypting the second encrypted plaintext through the encryption and decryption module in the Internet of Things communicator to obtain the second verification plaintext;

[0020] Converting the response data of the second verification plaintext through the hash function of the encryption and decryption module to obtain a digest;

[0021] Encrypting the digest through the encryption and decryption module to obtain the second feedback information with the second digital signature;

[0022] Sending the second feedback information to the base station through the Internet of Things communicator, so that the base station authenticates the video acquisition system based on the second digital signature in the second feedback information and generates an authentication result;

[0023] Receiving the authentication result sent by the base station through the Internet of Things communicator.

[0024] Optionally, the step of, if the available wireless network authentication is passed, connecting to the available wireless network through the wireless network communicator so that the video data collected by the imaging device can be uploaded to the server through the available wireless network includes:

[0025] Decrypt the first feedback information through the encryption and decryption module in the Internet of Things communicator to obtain the safe power range of the base station;

[0026] The main control module controls the power of the radio frequency signal transmitted by the wireless network communicator to be within the safe power range according to the safe power range.

[0027] Optionally, the video acquisition system further includes a working state detection module, and the working state detection module is electrically connected to the main control module;

[0028] The working state detection module sends a working state inquiry instruction to the main control module according to a preset period;

[0029] If the working state detection module does not obtain a response from the main control module within a preset response time range, the working state detection module controls the main control module to start a reset operation.

[0030] Optionally, the method further includes:

[0031] Transmit the video data collected by the imaging device to the server in real time through the wireless network communicator.

[0032] Optionally, the video acquisition system further includes a data storage module, and the method further includes:

[0033] Store the video data collected by the imaging device by using the data storage module;

[0034] The main control module transmits the video data in the data storage module to the server through the wireless network communicator according to a preset data transmission period.

[0035] As can be seen from the above technology, the present application provides a data transmission method for a video acquisition system. First, an Internet of Things communicator inside the video acquisition system is used to identify available wireless networks. Then, the available wireless networks are authenticated using the Internet of Things communicator. If the available wireless network authentication is passed, the available wireless network is connected through the wireless network communicator, so that the video data collected by the imaging device can be uploaded to the server through the available wireless network. Among them, the video acquisition system can be powered by a rechargeable battery, thereby ensuring that the video acquisition device can still be used normally in a working environment without a power supply device. At the same time, the wireless network to be connected can be authenticated before connecting to the wireless network to ensure the security of video data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a flowchart of a data transmission method based on a video acquisition system provided by an embodiment of the application;

[0038] Figure 2 It is a schematic structural diagram of a video acquisition system provided by an embodiment of the present application;

[0039] Figure 3 It is an internal structural diagram of a video acquisition system provided by an embodiment of the present application;

[0040] Figure 4 It is a flowchart of a method for identifying available wireless networks provided by the present application;

[0041] Figure 5 It is a flowchart of a wireless network authentication method provided by an embodiment of the present application;

[0042] Figure 6 It is a flowchart of a video acquisition system authentication method provided by an embodiment of the present application;

[0043] Figure 7 It is a flowchart of a method for setting the radio frequency signal transmission power provided by an embodiment of the present application;

[0044] Figure 8 It is a flowchart of a method for detecting the state of the main control module provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In some temporary construction work environments, such as large-scale maintenance sites of nuclear power plants, etc., it is usually necessary to conduct temporary video monitoring of personnel, equipment, the environment, etc. to timely discover potential hazards and problems in the work environment through video data. During the use of the video acquisition system, due to factors such as the lack of power supply facilities around, it cannot be connected to the power supply for normal use. At this time, the video data acquisition work cannot be achieved, which will seriously affect the normal work.

[0047] Moreover, in some work environments with safety rule requirements, such as nuclear power plants, etc., the emission power range of the radio frequency signal of the terminal device is specified. Generally, the commonly used wireless video acquisition system is difficult to meet these safety regulations, and the power of the radio frequency signal it emits will seriously exceed the scope of the safety rules. If these terminal devices are directly used, the precision instruments in the nuclear power plant will be damaged due to the interference of the radio frequency signal, and even more serious consequences such as nuclear pollution will be caused. However, if in order to comply with the safety regulations, the video signal transmission function of the video acquisition system is turned off within the scope of the nuclear power plant, and only the video data acquisition function is retained, the function of video monitoring will be lost, affecting the normal work.

[0048] To solve the above problems, the embodiments of the present application provide a data transmission method based on a video acquisition system.

[0049] Figure 1 As shown in the flowchart of a data transmission method for a video acquisition system provided by the embodiments of the present application, the method includes:

[0050] S1. Use the Internet of Things communicator inside the video acquisition system to identify available wireless networks. The video acquisition system is powered by a rechargeable battery. The video acquisition system includes a main control module for controlling internal components, a camera device for acquiring video data, a wireless network communicator disposed inside the main control module for wireless network data interaction, and an Internet of Things communicator for Internet of Things data interaction.

[0051] As Figure 2 shown, it is a schematic structural diagram of a video acquisition system provided by the embodiments of the present application. As Figure 3As shown in the figure, it is a schematic internal structure diagram of a video acquisition system provided by an embodiment of the present application. It can be seen that the video acquisition system at least includes: a network adapter 6 and a camera device 7. Inside the network adapter 6, there are a main control module 1, a wireless network communicator 2, an Internet of Things communicator 3, and a power controller 4. Outside the network adapter 6, there is a camera device 7. Among them, the wireless network communicator 2, the Internet of Things communicator 3, the power controller 4, and the camera device 7 are all electrically connected to the main control module 1, and the wireless network communicator 2, the Internet of Things communicator 3, and the camera device 7 are all electrically connected to the power controller 4. Among them, a first antenna 21 and a second antenna 31 are respectively provided on the wireless network communicator 2 and the Internet of Things communicator 3. The wireless network communicator 2 performs the transceiver of radio frequency signals through the first antenna 21, and the Internet of Things communicator 3 performs the transceiver of radio frequency signals through the second antenna 31. Specifically, the main control module 1 is used to control the operation of each device, and the power controller 4 is used to connect to a power supply device to supply power to each device inside the video acquisition system. Among them, the power controller 4 can be electrically connected to each device through a circuit board.

[0052] In the embodiment of the present application, since the video acquisition system needs to overcome the problem of the lack of a power supply device in the outside world, the video acquisition system also needs to include a rechargeable battery 5. By charging the rechargeable battery 5 with full power, and then the rechargeable battery 5 releases power to supply power to the video acquisition system. Preferably, the rechargeable battery 5 can be a rechargeable lithium battery. The specification of the rechargeable battery 5 can be selected according to the actual situation. For example, taking the rechargeable lithium battery as an example, if the power consumption of the camera device 7 is 10W, the total power consumption of the above devices is 6W, and the standby time of the video acquisition system is required to be 48 hours, then the specification of the rechargeable battery 5 needs to be 12VDC - 65AH.

[0053] Furthermore, in order to ensure the use safety of the rechargeable battery, short-circuit protectors, over-current protectors, overcharge protectors, over-discharge protectors, temperature protectors, over-voltage protectors, etc. can be added to the video acquisition system.

[0054] Furthermore, in order to facilitate the placement of the video acquisition system, a tripod can be equipped for the video acquisition system. At the same time, in order to facilitate carrying, the tripod can be designed to be telescopic.

[0055] Furthermore, in order to facilitate carrying the video acquisition system, a toolbox can be equipped for the video acquisition system to store components such as the camera device 7, the main body, the rechargeable battery 5, and the tripod. The preferred protection level is IP16 to be suitable for outdoor use.

[0056] Further, the network adapter 6 further includes: an EOC interface 10; the EOC interface 10 is electrically connected to the power controller 4 and the main control module 1 respectively. Based on the above implementation, adding an EOC interface to the video acquisition system can supply power to the video acquisition system and provide a wireless network by connecting to an EOC device. Among them, there is an EOC (Ethernet Over Cable, EOC power supply) device in the working environment. Therefore, the EOC device and the video acquisition system can be connected through a twisted pair. Specifically, one end of the twisted pair is connected to the EOC device, and the other end is connected to the EOC interface 10 through the interface on the video acquisition system, and is connected to the main control module 1 and the power controller 4 through the EOC interface 10.

[0057] Optionally, the network adapter 6 further includes: a POE interface 11; the POE interface 11 is electrically connected to the main control module 1 and the power controller 4 respectively. Based on the above implementation, adding a POE interface 11 to the video acquisition system can supply power to the video acquisition system and provide a wireless network by connecting to a POE (Power Over Ethernet, POE power supply) switch. Among them, there is a POE switch in the working environment. Therefore, the POE switch and the video acquisition system can be connected through a network cable. Specifically, one end of the network cable is connected to the POE switch, and the other end is connected to the main control module 1 and the power controller 4 through the POE interface 11 on the video acquisition system.

[0058] Before transmitting video data, the video acquisition system first identifies the available wireless networks around through the Internet of Things communicator. Specifically, as Figure 4 shown, it is a flowchart of a method for identifying available wireless networks provided by this application. The method includes:

[0059] S101. Receive Internet of Things signals through the Internet of Things communicator;

[0060] S102. Determine the target Internet of Things signal from the Internet of Things signals, where the target Internet of Things signal is the Internet of Things signal that matches the protocol of the Internet of Things communicator;

[0061] S103. Determine that the wireless network corresponding to the Internet of Things signal is an available wireless network according to the target Internet of Things signal.

[0062] In a video acquisition system, the Internet of Things communicator 3 is equivalent to a communication signal transceiver device, and the Internet of Things usually refers to a network environment based on a wireless network. Therefore, the Internet of Things communicator 3 can receive surrounding Internet of Things signals. Since different Internet of Things communicators 3 have different protocols, only the Internet of Things signals that match the protocol can be used by the Internet of Things communicator 3. Such Internet of Things signals are target Internet of Things signals. Through the target Internet of Things signals, the corresponding wireless network signals can be further determined, that is, if the target Internet of Things signals can be received, it means that there are also wireless network signals in the wireless network establishment basis of the target Internet of Things signals, that is, the wireless network is an available wireless network.

[0063] Among them, the frequency of the Internet of Things communicator 3 is 2.4 GHz, and the maximum output power of the Internet of Things communicator 3 is 19.5 dBm. As can be seen from the above, before determining the radio frequency signal transmission power of the wireless network communicator 2, the available wireless network and the power limit corresponding to the available wireless network are determined through the radio frequency signals transmitted by the Internet of Things communicator 3. Therefore, in order to avoid the excessive power of the radio frequency signals transmitted by the Internet of Things communicator 3 and avoid damaging surrounding precision instruments, it is necessary to control the transmission power of the radio frequency signals of the Internet of Things communicator 3 to ensure the use safety of the video acquisition system.

[0064] S2. Authenticate the available wireless network using the Internet of Things communicator.

[0065] The Internet of Things communicator 3 may receive multiple Internet of Things signals at the same time, that is, corresponding to multiple available wireless networks. Due to the openness of the wireless network, the wireless network lacks security. Therefore, in order to ensure the secure transmission of subsequent video data, it is necessary to authenticate these available wireless networks to determine the available wireless networks that meet the security requirements.

[0066] Specifically, as Figure 5 shown, it is a flowchart of a wireless network authentication method provided by an embodiment of the present application. The method includes:

[0067] S201. Encrypt the first verification plaintext through the encryption and decryption module in the Internet of Things communicator to obtain the first encrypted plaintext;

[0068] S202. Send the first encrypted plaintext to the base station corresponding to the available wireless network through the Internet of Things communicator, so that the base station generates the first feedback information with the first digital signature according to the first encrypted plaintext;

[0069] S203. Receive the first feedback information sent by the base station through the Internet of Things communicator;

[0070] S204. Decrypt the first digital signature in the first feedback information through the encryption / decryption module to authenticate the available wireless network.

[0071] Generally, as Figure 3 shown, an encryption / decryption module 8 is added to the network adapter 6 to authenticate the wireless network. Among them, the encryption / decryption module 8 can be a national cryptographic chip, that is, it can encrypt and decrypt the transmitted data through domestic cryptographic algorithms recognized by the National Cryptography Administration to authenticate the wireless network. Generally, domestic cryptographic algorithms mainly include SM1, SM2, SM3, and SM4, and can be selected according to actual situations.

[0072] Specifically, in the process of authenticating the wireless network through the IoT communicator 3, first, the IoT communicator 3 encrypts the first verification plaintext for verifying information through the encryption / decryption module 8, for example, generates a random number for the first verification plaintext using a national cryptographic algorithm. Then the first encrypted plaintext is sent to the base station corresponding to the available wireless network. When the base station receives the first encrypted plaintext, it needs to decrypt the first encrypted plaintext using the private key to obtain the first verification plaintext. Among them, the public key used by the encryption / decryption module 8 for encryption corresponds to the private key. Generally, the first verification plaintext is the wireless network parameter acquisition request of the video acquisition system, and the base station will generate corresponding response data according to the first verification plaintext, such as base station identification, various parameters and requirements of the available wireless network, etc. At this time, the base station uses a hash algorithm or other methods to convert these response data to generate a digest, and then uses the private key to encrypt the digest again to obtain the first digital signature. At this time, the first digital signature is added to the response data to obtain the first feedback information. Among them, the first digital signature is the credential for authenticating that the first feedback information comes from this base station. After the IoT communicator 3 receives the first feedback information sent by the base station, it obtains the first digital signature from it and decrypts it using the public key to obtain the digest. At this time, through this digest, it can be determined whether the first feedback information is truly sent by this base station, so as to authenticate that the base station to be connected is indeed this base station, thus completing the authentication process.

[0073] Furthermore, in order to verify that the first feedback information sent by the base station has not been maliciously tampered with, the encryption / decryption module 8 can use a hash function to convert the response data in the first feedback information to obtain another digest. At this time, by comparing this digest with the digest decrypted from the first digital signature above, it is confirmed whether the first feedback information has been tampered with.

[0074] Through the above steps, it can be ensured that the video acquisition system can accurately connect to the available wireless network of the established base station without being maliciously interfered with and connecting to the available wireless network of the wrong base station, thereby ensuring the transmission security of subsequent video data.

[0075] On the other hand, for some available wireless networks with special properties, it is also necessary to authenticate the security of the terminal devices requesting to connect to the wireless network to ensure the security of other terminal devices connected to the wireless network.

[0076] Specifically, as Figure 6 shown, it is a flowchart of a video acquisition system authentication method provided by an embodiment of the present application. The method includes:

[0077] S211. Receive, by the Internet of Things communicator, a second encrypted plaintext sent by a base station corresponding to the available wireless network, where the second encrypted plaintext is obtained by the base station encrypting a second verification plaintext;

[0078] S212. Decrypt, by a decryption and encryption module in the Internet of Things communicator, the second encrypted plaintext to obtain the second verification plaintext;

[0079] S213. Convert, by a hash function of the decryption and encryption module, response data of the second verification plaintext to obtain a digest;

[0080] S214. Encrypt, by the decryption and encryption module, the digest to obtain a second feedback message with a second digital signature;

[0081] S215. Send, by the Internet of Things communicator, the second feedback message to the base station, so that the base station authenticates the video acquisition system according to the second digital signature in the second feedback message and generates an authentication result;

[0082] S216. Receive, by the Internet of Things communicator, the authentication result sent by the base station.

[0083] The authentication process is the same as that of the wireless network. At this time, the video acquisition system is the object to be authenticated, and the base station corresponding to the available wireless network is the authentication object. At this time, the wireless network will first encrypt the second verification plaintext and send the second encrypted plaintext to the video acquisition system. After receiving the second encrypted plaintext, the video acquisition system needs to decrypt the second encrypted plaintext through the decryption and encryption module 8 to obtain the second verification plaintext, and generate response data according to the inquiry requirements included in the second verification plaintext. The decryption and encryption module 8 converts the response data of the second verification plaintext through a hash function to obtain a digest. And encrypt the digest through the decryption and encryption module 8 to obtain a second digital signature, and generate a second feedback message by using the response data and the second digital signature. Among them, the second digital signature is used to authenticate that the terminal device sending the second feedback message is the video acquisition system.

[0084] At this time, the base station decrypts the second digital signature in the received second feedback information to obtain the encrypted original digest, and determines whether the sender of the second feedback information is the video acquisition system based on this digest. Similarly, in order to further prove that the second feedback information has not been maliciously tampered with during the transmission process, the base station can also use a hash function to convert the response data in the second feedback information to obtain a digest, and determine whether the second feedback information has been maliciously tampered with by comparing this digest with the digest corresponding to the second digital signature.

[0085] Through the above steps, the security of the video acquisition system of the available wireless network connected to the base station can be ensured.

[0086] Through the above double authentication process, the security of subsequent video data transmission can be effectively ensured.

[0087] S3. If the available wireless network authentication is passed, connect to the available wireless network through the wireless network communicator, so that the video data collected by the imaging device can be uploaded to the server through the available wireless network.

[0088] After the available wireless network authentication is passed, the video data of the video acquisition system can be transmitted to the server through the available wireless network. Further, in order to comply with the security rules of the working environment where the video acquisition system is located, it is necessary to set the signal transmission power of the video acquisition system.

[0089] Specifically, as Figure 7 shown, it is a flowchart of a method for setting the radio frequency signal transmission power provided by an embodiment of the present application. The method includes:

[0090] S301. Decrypt the first feedback information through the encryption and decryption module in the Internet of Things communicator to obtain the safe power range of the base station;

[0091] S302. The main control module controls the power of the radio frequency signal transmitted by the wireless network communicator within the safe power range according to the safe power range.

[0092] As can be seen from the above, the first feedback information fed back by the base station will include the safe power range of the base station, that is, the power range of the radio frequency signal corresponding to the available wireless network of the base station. At this time, the main control module 1 needs to control the function of the radio frequency signal of the wireless network communicator 2 according to this safe power range. Usually, the frequency bands of the wireless network communicator 2 are mainly 2.4 GHz and 5 GHz. For example, if the safe power range allows, the 5 GHz frequency band can be set for communication, which can effectively improve the transmission efficiency and quality; if the safe power range is relatively strict, the 2.4 GHz frequency band can be set for communication to ensure the security of use.

[0093] Furthermore, during the operation of the main control module 1, it may experience jamming, that is, it cannot normally control each device to perform corresponding operations, causing the video acquisition system to malfunction. To detect this situation in a timely manner and repair this problem, the method shown in Figure 8 is provided. It is a flowchart of a method for detecting the state of the main control module provided in an embodiment of the present application. The method includes:

[0094] S311. The working state detection module sends a working state query instruction to the main control module according to a preset period;

[0095] S312. If the working state detection module does not receive a response from the main control module within a preset response time range, the working state detection module controls the main control module to start a reset operation.

[0096] A working state detection module 9 is added to the network adapter 6. The working state detection module 9 has the function of periodically sending a working state query instruction. If the working state detection module 9 does not receive a response from the main control module 1 for a long time, it indicates that the main control module 1 is in an abnormal working state. At this time, the working state detection module 9 needs to independently send a reset instruction to the main control module 1 to enable the main control module to start a reset operation in a manner such as restarting.

[0097] After the video acquisition system is connected to an available wireless network, it can start uploading video data to the server.

[0098] In one implementation, the video data collected by the imaging device can be transmitted to the server in real time through the wireless network communicator 2.

[0099] In another implementation, a data storage module 12 is added to the network adapter 6. The video data collected by the imaging device 7 can be stored by the data storage module 12. Then, the main control module 1 transmits the video data in the data storage module 12 to the server through the wireless network communicator 2 according to a preset data transmission period. This method can be applied to situations where the requirement for real-time monitoring is not high or the quality of the available wireless network is poor.

[0100] As can be seen from the above technology, the present application provides a data transmission method for a video acquisition system. First, the Internet of Things communicator 3 inside the video acquisition system is used to identify available wireless networks. Then, the available wireless networks are authenticated using the Internet of Things communicator 3. If the authentication of the available wireless network is successful, the available wireless network is connected through the wireless network communicator 2, so that the video data collected by the imaging device 7 can be uploaded to the server through the available wireless network. Among them, the video acquisition system can be powered by a rechargeable battery 5, thereby ensuring that the video acquisition device can still be used normally in a working environment without a power supply device. At the same time, the wireless network to be connected can be authenticated before connecting to the wireless network to ensure the security of video data transmission.

[0101] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. The specification and examples are only to be considered exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0102] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A data transmission method for a video acquisition system, characterized in that, the method includes: receiving an Internet of Things signal by using an Internet of Things communicator inside the video acquisition system; determining a target Internet of Things signal from the Internet of Things signal, where the target Internet of Things signal is an Internet of Things signal that matches the protocol of the Internet of Things communicator; determining, according to the target Internet of Things signal, that the wireless network corresponding to the Internet of Things signal is an available wireless network; the video acquisition system is powered by a rechargeable battery, and the video acquisition system includes a main control module for controlling internal devices, a camera device for acquiring video data, a wireless network communicator disposed inside the main control module for wireless network data interaction, and an Internet of Things communicator for Internet of Things data interaction; authenticating the available wireless network by using the Internet of Things communicator, including: encrypting a first authentication plaintext by using an encryption and decryption module in the Internet of Things communicator to obtain a first encrypted plaintext, where the first authentication plaintext is a wireless network parameter acquisition request of the video acquisition system; sending the first encrypted plaintext to a base station corresponding to the available wireless network through the Internet of Things communicator, so that the base station generates a first feedback message with a first digital signature according to the first encrypted plaintext; receiving, by the Internet of Things communicator, the first feedback message sent by the base station; decrypting the first digital signature in the first feedback message by using the encryption and decryption module to obtain a first digest, where the first digest is used to authenticate the available wireless network; converting the response data in the first feedback message by using the encryption and decryption module to obtain a second digest, and comparing the second digest with the first digest to confirm whether the first feedback message is tampered with, where the response data is generated by the base station according to the first authentication plaintext; if the authentication of the available wireless network passes, then connecting to the available wireless network through the wireless network communicator, so that the video data acquired by the camera device can be uploaded to a server through the available wireless network.

2. The method according to claim 1, characterized in that, the authenticating the available wireless network by using the Internet of Things communicator includes: receiving, by the Internet of Things communicator, a second encrypted plaintext sent by a base station corresponding to the available wireless network, where the second encrypted plaintext is obtained by the base station encrypting a second authentication plaintext; decrypting the second encrypted plaintext by using an encryption and decryption module in the Internet of Things communicator to obtain the second authentication plaintext; converting the response data of the second authentication plaintext by using a hash function of the encryption and decryption module to obtain a digest; encrypting the digest by using the encryption and decryption module to obtain a second feedback message with a second digital signature; sending the second feedback message to the base station through the Internet of Things communicator, so that the base station authenticates the video acquisition system according to the second digital signature in the second feedback message and generates an authentication result; receiving, by the Internet of Things communicator, the authentication result sent by the base station.

3. The method according to claim 1, characterized in that, If the authentication of the available wireless network is passed, connect to the available wireless network through the wireless network communicator, so that the video data collected by the camera device can be uploaded to the server through the available wireless network, including: Decrypt the first feedback information through the encryption and decryption module in the Internet of Things communicator to obtain the safe power range of the base station; The main control module controls the power of the radio frequency signal transmitted by the wireless network communicator within the safe power range according to the safe power range.

4. The method according to claim 1, wherein, The video acquisition system further includes a working state detection module, and the working state detection module is electrically connected to the main control module; The working state detection module sends a working state query instruction to the main control module according to a preset period; If the working state detection module does not obtain a response from the main control module within a preset response time range, the working state detection module controls the main control module to start a reset operation.

5. The method according to claim 1, wherein, The method further includes: Transmit the video data collected by the camera device to the server in real time through the wireless network communicator.

6. The method according to claim 1, wherein, The video acquisition system further includes a data storage module, and the method further includes: Use the data storage module to store the video data collected by the camera device; The main control module transmits the video data in the data storage module to the server through the wireless network communicator according to a preset data transmission period.

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