Industrial video data secure transmission method, system, equipment and medium

Abstract

The embodiment of the invention provides an industrial video data secure transmission method, system, equipment and medium, which are applied to the technical field of computer data transmission, and can encode industrial video data sent by equipment in a production control area through an image encoding device to generate a current analog signal; the current analog signal is modulated to the optical analog signal through the optical fiber terminal, the modulated optical analog signal is formed and transmitted, and the safety and the integrity of video data transmission are ensured due to the high anti-interference capability and the low signal attenuation characteristic of the optical fiber terminal; according to the invention, the image decoding device can receive the modulated optical analog signal and decode and restore the industrial video data, and the industrial video data are finally output to the user server for real-time display, so that the process not only improves the efficiency and safety of data transmission, but also enhances the reliability and applicability of the system, and is suitable for popularization and application. Therefore, the industrial video data can be stably transmitted in a severe environment.

Description

Technical Field

[0001] The present invention relates to the technical field of computer data transmission, and in particular to a method, system, device and storage medium for secure transmission of industrial video data. Background Art

[0002] With the rapid development of emerging information technologies such as artificial intelligence and big data, intelligent operation and maintenance functions based on image processing and image recognition algorithms have begun to be widely used in industrial sites, such as judging whether the operation behavior in the construction area is safe based on face image recognition, and have achieved good application results, which has led to a rapid increase in the number of cameras and video data installed in industrial production areas. However, as important data for directly monitoring the operating status of the production area, the issue of secure transmission of industrial video data has not been taken seriously.

[0003] In the existing technology, industrial videos are encrypted and then directly transmitted to an external management area through the network. This method improves the transmission security of industrial video data to a certain extent. However, since the camera is directly connected to the external Internet through the network, there is a certain risk of network attacks, which may cause the video data to be brute-force cracked and tampered with. Summary of the invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide an industrial video data secure transmission method, system, device and storage medium that overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above problems, an embodiment of the present invention discloses an industrial video data security transmission system, the system comprising an image encoding device, an optical fiber terminal, and an image decoding device; the image encoding device is connected to a production control area device, and the image decoding device is connected to a user server; the optical fiber terminal is connected to the image encoding device and the image decoding device respectively; The image encoding device is used to obtain the industrial video data sent by the equipment in the production control area, encode the industrial video data to obtain a current analog signal, and transmit the current analog signal to the optical fiber terminal; The optical fiber terminal is used to obtain an optical analog signal, modulate the optical analog signal by the current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to the image decoding device; The image decoding device is used for decoding the modulated optical analog signal to obtain the industrial video data, and outputting the industrial video data to the user server for display on the user server.

[0006] Optionally, the image encoding device comprises an image processing module, a first port, a second port, a third port, and a fourth port, and the image processing module is connected to the first port, the second port, the third port, and the fourth port respectively; The image processing module is used to convert the industrial video data to obtain an image sequence, grayscale the image sequence to obtain a grayscale image, and extract components of the image sequence to obtain an R channel image, a G channel image, and a B channel image; after traversing the pixels of the R channel image, one-dimensional R channel image data of a preset length is obtained, after traversing the pixels of the G channel image, one-dimensional G channel image data of a preset length is obtained, after traversing the pixels of the B channel image, one-dimensional B channel image data of a preset length is obtained, and after traversing the pixels of the grayscale image, one-dimensional grayscale image data of a preset length is obtained. ; Perform digital-to-analog conversion on the one-dimensional R channel image data to obtain a corresponding first current analog signal, perform digital-to-analog conversion on the one-dimensional G channel image data to obtain a corresponding second current analog signal, perform digital-to-analog conversion on the one-dimensional B channel image data to obtain a corresponding third current analog signal, perform digital-to-analog conversion on the one-dimensional grayscale image data to obtain a corresponding fourth current analog signal, send the first current analog signal to the first port, send the second current analog signal to the second port, send the third current analog signal to the third port, and send the fourth current analog signal to the fourth port.

[0007] Optionally, the image encoding device further includes a centralized scheduling module, which is respectively connected to the first port, the second port, and the third port, and is used to turn on or off the first port, the second port, and the third port.

[0008] Optionally, the image encoding device also includes a mode control module, one end of the mode control module is connected to the fourth port, and the other end of the mode control module is connected to a centralized scheduling module via a communication control bus, the centralized scheduling module is used to send a control instruction to the mode control module, the control instruction is used to close the fourth port, and the mode control module is used to close the fourth port according to the control instruction.

[0009] Optionally, the image encoding device further includes a time pulse module and a fifth port, and the time pulse module is respectively connected to the first port, the second port, the third port, the fourth port, the fifth port, and the centralized scheduling module; The centralized scheduling module is used to send a preset time pulse signal to the time pulse module, and the time pulse module is used to send the preset time pulse signal to the first port, the second port, the third port, the fourth port, and the fifth port respectively, so that the first port, the second port, the third port, and the fourth port send signals at the same time.

[0010] Optionally, the image encoding device further includes a quality monitoring module and a sixth port, the quality monitoring module is connected to the centralized scheduling module and the sixth port, and the centralized scheduling module is also connected to the fourth port and the fifth port; The centralized scheduling module is used to detect the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port, and send the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port to the quality monitoring module; The quality monitoring module is used to generate corresponding first coding information according to the channel condition of the first port, generate corresponding second coding information according to the channel condition of the second port, generate corresponding third coding information according to the channel condition of the third port, generate corresponding fourth coding information according to the channel condition of the fourth port, generate corresponding fifth coding information according to the channel condition of the fifth port, and output the first coding information, the second coding information, the third coding information, the fourth coding information, and the fifth coding information through the sixth port.

[0011] Optionally, the optical fiber terminal is connected to a first wavelength division multiplexer, and the first wavelength division multiplexer is used to obtain optical analog signals of different wavelength bands and send the optical analog signals of different wavelength bands to the optical fiber terminal.

[0012] Optionally, the system also includes a second wavelength division multiplexer, the optical fiber terminal is connected to the image decoding device via the second wavelength division multiplexer, the optical fiber terminal device is used to transmit multiple modulated optical analog signals to the second wavelength division multiplexer, the second wavelength division multiplexer is used to superimpose the multiple modulated optical analog signals to obtain a target optical analog signal, and transmit the target optical analog signal to the image decoding device.

[0013] Optionally, the image decoding device comprises a photodetector and a signal processing unit; the photodetector is connected to the signal processing unit; The photodetector is used to convert the modulated light analog signal into the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and transmit the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal to the signal processing unit; The signal processing unit is used to calculate an R channel image, a G channel image, a B channel image, and a grayscale image according to the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and synthesize the industrial video data according to the R channel image, the G channel image, the B channel image, and the grayscale image.

[0014] Optionally, the image decoding device also includes a driving circuit, which is respectively connected to the photodetector and the signal processing unit; the driving circuit is used to send a driving signal to the photodetector to drive the photodetector, or to send a driving signal to the signal processing unit to drive the signal processing unit.

[0015] The present invention also discloses a method for secure transmission of industrial video data, which is applied to the above-mentioned secure transmission system for industrial video data, and comprises: Acquiring industrial video data through the image encoding device, and encoding the industrial video data to obtain a current analog signal; Acquire an optical analog signal through the optical fiber terminal, modulate the optical analog signal through the current analog signal to obtain a modulated optical analog signal, and send the modulated optical analog signal to an image decoding device; The modulated optical analog signal is decoded by the image decoding device to obtain the industrial video data, and the industrial video data is output.

[0016] Optionally, encoding the industrial video data to obtain a current analog signal includes: Converting the industrial video data into an image sequence; Performing grayscale processing on the image sequence to obtain a grayscale image; Performing component extraction on the image sequence to obtain an R channel image, a G channel image, and a B channel image; After traversing the pixels of the R channel image, one-dimensional R channel image data of a preset length is obtained; after traversing the pixels of the G channel image, one-dimensional G channel image data of a preset length is obtained; after traversing the pixels of the B channel image, one-dimensional B channel image data of a preset length is obtained; after traversing the pixels of the grayscale image, one-dimensional grayscale image data of a preset length is obtained; The one-dimensional R channel image data is digital-to-analog converted to obtain a corresponding first current analog signal, the one-dimensional G channel image data is digital-to-analog converted to obtain a corresponding second current analog signal, the one-dimensional B channel image data is digital-to-analog converted to obtain a corresponding third current analog signal, and the one-dimensional grayscale image data is digital-to-analog converted to obtain a corresponding fourth current analog signal.

[0017] Optionally, acquiring the optical analog signal through the optical fiber terminal, and modulating the optical analog signal through the current analog signal to obtain a modulated optical analog signal includes: Acquire optical analog signals of different wavelength bands through the optical fiber terminal; The optical analog signals of different wavelength bands are modulated respectively by the first current analog signal, the second current analog signal, the third current analog signal and the fourth current analog signal to obtain a modulated first optical analog signal, a modulated second optical analog signal, a modulated third optical analog signal and a modulated fourth optical analog signal, and the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal and the modulated fourth optical analog signal are superimposed to obtain a target optical analog signal.

[0018] Optionally, decoding the modulated optical analog signal by the image decoding device to obtain the industrial video data includes: The target optical analog signal is parsed by the image decoding device to obtain the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal, and the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal are converted to obtain the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal; An R channel image, a G channel image, a B channel image, and a grayscale image are calculated according to the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and the industrial video data is synthesized according to the R channel image, the G channel image, the B channel image, and the grayscale image.

[0019] The present invention also discloses an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to execute the steps of the above-mentioned industrial video data secure transmission method.

[0020] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned industrial video data secure transmission method are implemented.

[0021] The embodiments of the present invention include the following advantages: The present invention discloses a method, system, device and medium for secure transmission of industrial video data. The present invention can encode the industrial video data sent by the equipment in the production control area through an image encoding device to generate a current analog signal, and modulate the current analog signal onto an optical analog signal through an optical fiber terminal to form a modulated optical analog signal for transmission. The high anti-interference ability and low signal attenuation characteristics of the optical fiber terminal ensure the security and integrity of video data transmission, and fundamentally avoid the possibility of network attacks. The present invention can receive the modulated optical analog signal through an image decoding device and decode and restore the industrial video data, and finally output it to a user server for real-time display. This process not only improves the efficiency and security of data transmission, but also enhances the reliability and applicability of the system, so that the industrial video data can be stably transmitted in harsh environments, and provide users with real-time and reliable monitoring and management support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The invention provides a structural block diagram of an industrial video data security transmission system.

[0023] Figure 2 is a structural block diagram of an image encoding device provided by an embodiment of the present invention; Figure 3 is a structural block diagram of another industrial video data security transmission system provided by an embodiment of the present invention; Figure 4 is a structural block diagram of an image decoding device provided by an embodiment of the present invention; Figure 5 The present invention provides a flowchart of a method for securely transmitting industrial video data. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] With the rapid development of emerging information technologies such as artificial intelligence and big data, intelligent operation and maintenance functions based on image processing and image recognition algorithms have begun to be widely used in industrial sites, such as judging whether the operation behavior in the construction area is safe based on face image recognition, and have achieved good application results, which has led to a rapid increase in the number of cameras and video data installed in industrial production areas. However, as important data for directly monitoring the operating status of the production area, the issue of secure transmission of industrial video data has not been taken seriously.

[0026] In the existing industrial video data transmission technology, one method is to manage the camera and its networked devices as production control area (high security partition) equipment. The relevant video data is only transmitted in the industrial site intranet environment and will not be transmitted to the external management area (low security partition). Another method is to encrypt the industrial video and directly transmit it to the external management area through the network. This method improves the transmission security of industrial video data, but because the camera is directly connected to the external Internet through the network, there is a certain risk of network attacks, which may cause the video data to be brute-force cracked and tampered with.

[0027] One of the core concepts of the embodiments of the present invention is that the present invention can encode the industrial video data sent by the production control area equipment through an image encoding device to generate a current analog signal, and modulate the current analog signal onto the optical analog signal through the optical fiber terminal to form a modulated optical analog signal for transmission. Due to the high anti-interference ability and low signal attenuation characteristics of the optical fiber terminal, the security and integrity of the video data transmission are ensured, and the possibility of network attacks is fundamentally avoided; the present invention can receive the modulated optical analog signal through an image decoding device and decode and restore the industrial video data, and finally output it to the user server for real-time display. This process not only improves the efficiency and security of data transmission, but also enhances the reliability and applicability of the system, so that industrial video data can be stably transmitted in harsh environments, and provide users with real-time and reliable monitoring and management support.

[0028] Reference Figure 1 , shows a structural block diagram of an industrial video data security transmission system 10 provided by an embodiment of the present invention, the system 10 includes an image encoding device 101, an optical fiber terminal 102, and an image decoding device 103; the image encoding device 101 is connected to the production control area equipment 20, and the image decoding device 103 is connected to the user server 30; the optical fiber terminal 102 is connected to the image encoding device 101 and the image decoding device 103 respectively; In an embodiment of the present invention, the production control area equipment 20 can be located in a high-security partition and can generate industrial video data. Industrial video data refers to data collected by a video surveillance system in an industrial production environment. These data are usually used to monitor the production process, ensure operational safety, and improve production efficiency and quality control. The production control area equipment 20 can send the industrial video data to the image encoding device 101.

[0029] The image encoding device 101 is used to obtain video data sent by the equipment in the production control area, encode the video data to obtain a current analog signal, and transmit the current analog signal to the optical fiber terminal.

[0030] In the embodiment of the present invention, after acquiring the video data sent by the production control area equipment 20 , the image encoding device 101 can encode the video data to obtain a current analog signal, and then send the current analog signal to the optical fiber terminal 102 .

[0031] The optical fiber terminal 102 is used to obtain an optical analog signal, modulate the optical analog signal by a current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to an image decoding device; In the embodiment of the present invention, the optical fiber terminal is a key component in the optical fiber communication system. The main function of the optical fiber terminal is to ensure efficient and stable transmission of optical signals. The optical fiber terminal 102 can obtain the optical analog signal sent by the laser power supply, and then modulate the optical analog signal through the current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to the image decoding device 103.

[0032] The image decoding device is used for decoding the modulated optical analog signal to obtain industrial video data, and outputting the industrial video data to a user server for display on the user server.

[0033] In an embodiment of the present invention, the image decoding device 103 can decode the modulated optical analog signal to obtain the original industrial video data, and then transmit the original industrial video data to the user server 30 for display. The present invention can realize the secure transmission of industrial video data across security partitions, and can be applied to business scenarios where video data information is relatively sensitive and requires centralized management, thereby ensuring the safety of industrial production operations.

[0034] The present invention discloses a secure transmission system for industrial video data. The present invention can obtain an optical analog signal through an optical fiber terminal device, and then modulate the optical analog signal through an electric current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to a decoding module for decoding to obtain original industrial video data. The present invention uses an optical fiber terminal device to construct an optical transmission path, which is essentially a non-contact weak current sensor. Because the optical fiber does not emit electromagnetic waves, it is not easily eavesdropped or interfered with, thereby protecting the security and privacy of industrial video data, fundamentally avoiding the possibility of network attacks, and realizing cross-regional transmission of industrial video data, realizing industrial video data integration, providing real-time and reliable field operation data for artificial intelligence model training, and improving model training efficiency. Optical fiber transmission is not easily affected by electromagnetic interference, so the integrity and accuracy of industrial video data can be guaranteed.

[0035] In one embodiment of the present invention, Figure 2 A structural block diagram of an image encoding device provided by an embodiment of the present invention is shown. The image encoding device 101 may include an image processing module 1011, a first port R, a second port G, a third port B, and a fourth port M. The image processing module 1011 is connected to the first port R, the second port G, the third port B, and the fourth port M respectively; the image processing module is used to convert industrial video data to obtain an image sequence, grayscale the image sequence to obtain a grayscale image, and component extract the image sequence to obtain an R channel image, a G channel image, and a B channel image; after traversing the pixels of the R channel image, one-dimensional R channel image data of a preset length is obtained, and after traversing the pixels of the G channel image, one-dimensional G channel image data of a preset length is obtained. , after traversing the pixel points of the B channel image, obtain one-dimensional B channel image data of a preset length, after traversing the pixel points of the grayscale image, obtain one-dimensional grayscale image data of a preset length; perform digital-to-analog conversion on the one-dimensional R channel image data to obtain a corresponding first current analog signal, perform digital-to-analog conversion on the one-dimensional G channel image data to obtain a corresponding second current analog signal, perform digital-to-analog conversion on the one-dimensional B channel image data to obtain a corresponding third current analog signal, perform digital-to-analog conversion on the one-dimensional grayscale image data to obtain a corresponding fourth current analog signal, send the first current analog signal to the first port, send the second current analog signal to the second port, send the third current analog signal to the third port, and send the fourth current analog signal to the fourth port.

[0036] In an embodiment of the present invention, the image processing module 1011 can extract images frame by frame from industrial video data, and then convert the images to obtain an image sequence. Assuming that the size of each frame image in the image sequence is a*b, the image sequence can be grayscale processed to obtain a grayscale image. Component extraction can be performed on the image sequence to obtain an R channel image, a G channel image, and a B channel image. Assuming that the preset length is c, the pixels of the grayscale image can be traversed to obtain one-dimensional grayscale image data of a*b*c size, the pixels of the R channel image can be traversed to obtain one-dimensional R channel image data of a*b*c size, the pixels of the G channel image can be traversed to obtain one-dimensional G channel image data of a*b*c size, and the pixels of the B channel image can be traversed to obtain one-dimensional B channel image data of a*b*c size.

[0037] Furthermore, the one-dimensional R channel image data can be digital-to-analog converted to obtain the corresponding first current analog signal, the one-dimensional G channel image data can be digital-to-analog converted to obtain the corresponding second current analog signal, the one-dimensional B channel image data can be digital-to-analog converted to obtain the corresponding third current analog signal, and the one-dimensional grayscale image data can be digital-to-analog converted to obtain the corresponding fourth current analog signal.

[0038] The image processing module 1011 can send the first current analog signal to the first port R, the second current analog signal to the second port G, the third current analog signal to the third port B, and the fourth current analog signal to the fourth port M. The present invention not only improves the processing efficiency and accuracy of image data, but also realizes parallel processing and transmission of multi-channel image data, ensuring high-quality encoding and transmission of industrial video data.

[0039] In one embodiment of the present invention, Figure 2 The image encoding device also includes a centralized scheduling module 1012, which is connected to the first port, the second port, and the third port respectively, and is used to turn on or off the first port, the second port, and the third port.

[0040] In the embodiment of the present invention, the image encoding device 101 may further include a centralized scheduling module 1012, which is connected to the first port, the second port, and the third port respectively, and is used to turn on or off the first port, the second port, and the third port.

[0041] In an embodiment of the present invention, the image encoding device 101 may further include a centralized scheduling module 1012. The centralized scheduling module 1012 may realize the transmission of data of the corresponding channel by opening or closing the corresponding channel. If the current image transmission mode is a color image, the first port, the second port, and the third port may be opened. Therefore, the centralized scheduling module 1012 may open the first port R, the second port G, and the third port B. The present invention may integrate a centralized scheduling module to flexibly turn on or off the first port, the second port, and the third port, thereby realizing dynamic management of data collection and transmission paths of equipment in different production control areas, which not only improves the flexibility and scalability of the system, but also optimizes resource allocation, ensures efficient and secure transmission of industrial video data in a multi-device environment, and enhances the overall performance and adaptability of the system.

[0042] In one embodiment of the present invention, the image encoding device also includes a mode control module 1013, one end of the mode control module 1013 is connected to the fourth port M, and the other end of the mode control module is connected to the centralized scheduling module through a communication control bus, the centralized scheduling module is used to send a control instruction to the mode control module, the control instruction is used to close the fourth port, and the mode control module is used to close the fourth port according to the control instruction.

[0043] In the embodiment of the present invention, Figure 2 As shown, the image encoding device also includes a mode control module 1013, one end of the mode control module 1013 is connected to the fourth port M, and the other end of the mode control module 1013 is connected to the centralized scheduling module 1012 through a communication control bus. The centralized scheduling module 1012 can send a control instruction to the mode control module 1013, and the control instruction can include closing the fourth port. The mode control module can close the fourth port according to the control instruction. For example, the current image transmission mode is a color image transmission mode, and the centralized scheduling module 1012 can open the first port R, the second port G, and the third port B, and then send a control instruction to the mode control module 1013 to close the fourth port M; in another example, the current image transmission mode is a gray image transmission mode, and the centralized scheduling module 1012 can close the first port R, the second port G, and the third port B, and then send a control instruction to the mode control module 1013 to open the fourth port M; the present invention can dynamically close the fourth port according to the control instruction sent by the centralized scheduling module through the coordinated work of the mode control module and the centralized scheduling module, thereby realizing precise control of a specific data transmission path.

[0044] In one embodiment of the present invention, the image encoding device also includes a time pulse module and a fifth port T, and the time pulse module is respectively connected to the first port, the second port, the third port, the fourth port, the fifth port, and the centralized scheduling module; the centralized scheduling module is used to send a preset time pulse signal to the time pulse module, and the time pulse module is used to send the preset time pulse signal to the first port, the second port, the third port, the fourth port, and the fifth port, so that the first port, the second port, the third port, and the fourth port send signals at the same time.

[0045] In the embodiment of the present invention, Figure 2 As shown, the image encoding device also includes a time pulse module 1014 and a fifth port T. The centralized scheduling module can send a preset time pulse signal to the time pulse module 1014. After receiving the preset time pulse signal, the time pulse module 1014 can send the preset time pulse signal to the first port R, the second port G, the third port B, the fourth port M, and the fifth port T respectively, so that the first port R, the second port G, the third port B, the fourth port M, and the fifth port T send signals at the same time. The time pulse module 1014 is responsible for periodically transmitting time pulses, which can realize synchronous calibration of signal sending and receiving, improve the accuracy and consistency of data transmission, and optimize the efficiency of collaborative work.

[0046] In one embodiment of the present invention, the image encoding device also includes a quality monitoring module and a sixth port, the quality monitoring module is connected to the centralized scheduling module and the sixth port, and the centralized scheduling module is also connected to the fourth port and the fifth port; the centralized scheduling module is used to detect the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port, and send the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port to the quality monitoring module; the quality monitoring module is used to generate corresponding first coding information according to the channel condition of the first port, generate corresponding second coding information according to the channel condition of the second port, generate corresponding third coding information according to the channel condition of the third port, generate corresponding fourth coding information according to the channel condition of the fourth port, generate corresponding fifth coding information according to the channel condition of the fifth port, and output the first coding information, the second coding information, the third coding information, the fourth coding information, and the fifth coding information through the sixth port.

[0047] In the embodiment of the present invention, Figure 2As shown, the image encoding device also includes a quality monitoring module 1015 and a sixth port Q. The centralized scheduling module 1012 can detect the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port, and then send the channel conditions of the first port, the second port, the third port, and the fourth port to the quality monitoring module 1015. The quality monitoring module 1015 can generate corresponding first coding information according to the channel condition of the first port, generate corresponding second coding information according to the channel condition of the second port, generate corresponding third coding information according to the channel condition of the third port, generate corresponding fourth coding information according to the channel condition of the fourth port, and generate corresponding fifth coding information according to the channel condition of the fifth port. In an example, code T can be used to represent a normal channel, and code F can represent an abnormal channel. If the centralized scheduling The quality module 1012 detects that the first port, the second port, the third port, and the fourth port are all normal and the fifth port is abnormal. The quality monitoring module can generate the first coding information RT, the second coding information GT, the third coding information BT, the fourth coding information MT, and the fifth coding information TT, and then send them to the sixth port for output; the present invention can detect the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port in real time through the coordinated work of the quality monitoring module and the centralized scheduling module, and generate corresponding coding information according to the channel conditions of each port, and output it through the sixth port; it not only improves the reliability and stability of data transmission, but also realizes real-time monitoring and feedback of the channel status of multiple ports, ensuring that potential problems can be discovered and handled in a complex industrial environment in a timely manner, thereby enhancing the overall performance and maintainability of the system.

[0048] In one embodiment of the present invention, the optical fiber terminal is connected to a first wavelength division multiplexer, and the first wavelength division multiplexer is used to obtain optical analog signals of different wavelength bands and send the optical analog signals of different wavelength bands to the optical fiber terminal.

[0049] In the embodiment of the present invention, Figure 3 , shows a structural block diagram of another video data transmission system provided by an embodiment of the present invention, the optical fiber terminal is connected to the first wavelength division multiplexer WDM1, the first wavelength division multiplexer WDM1 can obtain optical analog signals of different bands from the laser light source 40, and then send the optical analog signals of different bands to the optical fiber terminals 1021, 1022, 1023, 1024, 1025, 1026, wherein the optical fiber terminal 1021 is used to receive the analog current signal sent by port R, 1022 is used to receive the analog current signal sent by port G, 1023 is used to receive the analog current signal sent by port B, 1024 is used to receive the analog current signal sent by port M, 1025 is used to receive the analog current signal sent by port T, and 1026 is used to receive the analog current signal sent by port Q.

[0050] In one embodiment of the present invention, the system also includes a second wavelength division multiplexer, the optical fiber terminal is connected to the image decoding device through the second wavelength division multiplexer, the optical fiber terminal device is used to transmit multiple modulated optical analog signals to the second wavelength division multiplexer, the second wavelength division multiplexer is used to superimpose the multiple modulated optical analog signals to obtain a target optical analog signal, and transmit the target optical analog signal to the image decoding device.

[0051] In the embodiment of the present invention, the system 10 may further include a second wavelength division multiplexer WDM2, and the optical fiber terminals 1021, 1022, 1023, 1024, 1025, and 1026 are connected to the image decoding device 103 through the second wavelength division multiplexer WDM2, and the image decoding device 103 is connected to the laser light source 40. The optical fiber terminals 1021, 1022, 1023, 1024, 1025, and 1026 can transmit the six-channel modulated optical analog signals to the second wavelength division multiplexer WDM2, and the second wavelength division multiplexer WDM2 can transmit the six-channel modulated optical analog signals to the second wavelength division multiplexer WDM2. The analog signals are superimposed to obtain a beam of optical analog signal, namely, the target optical analog signal, and then the target optical analog signal is transmitted to the image decoding device 103. The image decoding device 103 can decode the target optical analog signal by the optical analog signal obtained from the laser light source. By superimposing a plurality of modulated optical analog signals into a target optical analog signal and transmitting it to the image decoding device, the system can more efficiently process and decode industrial video data, ensure the reliability and real-time performance of data transmission, improve the bandwidth utilization of optical fiber transmission, and realize the parallel transmission of multiple signals.

[0052] In one embodiment of the present invention, an image decoding device includes a photodetector and a signal processing unit; the photodetector is connected to the signal processing unit; the photodetector is used to convert the modulated light analog signal into a first current analog signal, a second current analog signal, a third current analog signal, and a fourth current analog signal, and transmit the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal to the signal processing unit; the signal processing unit is used to calculate an R channel image, a G channel image, a B channel image, and a grayscale image based on the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and synthesize video data based on the R channel image, the G channel image, the B channel image, and the grayscale image.

[0053] In the embodiment of the present invention, Figure 4 , shows a structural block diagram of an image decoding device 103 provided by an embodiment of the present invention, the image decoding device 103 may include a photodetector 1031 and a signal processing unit 1032; the photodetector 1031 is connected to the signal processing unit 1032; After receiving a beam of modulated light analog signal, the photodetector 1031 may convert the modulated light analog signal into a first current analog signal, a second current analog signal, a third current analog signal, and a fourth current analog signal, and transmit the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal to the signal processing unit 1032; The signal processing unit 1032 can analyze and calculate the first current analog signal to obtain an R channel image, analyze and calculate the second current analog signal to obtain a G channel image, analyze and calculate the third current analog signal to obtain a B channel image, and analyze and calculate the fourth current analog signal to obtain an M channel image. Then, video data can be synthesized according to the R channel image, the G channel image, the B channel image, and the grayscale image, and then the video data can be transmitted to the user server for playback. The present invention improves the accuracy and efficiency of image decoding by parallel processing of multi-channel image data, thereby ensuring high-quality restoration and real-time display of industrial video data.

[0054] In one embodiment of the present invention, the image decoding device also includes a driving circuit, which is respectively connected to the photodetector and the signal processing unit; the driving circuit is used to send a driving signal to the photodetector to drive the photodetector, or to send a driving signal to the signal processing unit to drive the signal processing unit.

[0055] In the embodiment of the present invention, Figure 4 The image decoding device also includes a driving circuit 1033, which is respectively connected to the photodetector 1031 and the signal processing unit 1032; the driving circuit 1033 is used to send a driving signal to the photodetector to drive the photodetector, or to send a driving signal to the signal processing unit to drive the signal processing unit. The present invention enables the industrial video data security transmission system to more accurately control the working status of the photodetector and the signal processing unit through the driving circuit, thereby improving the overall performance and reliability of industrial video data decoding.

[0056] The present invention discloses a secure transmission system for industrial video data. The present invention can obtain an optical analog signal through an optical fiber terminal device, and then modulate the optical analog signal through an electric current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to a decoding module for decoding to obtain original video data. The present invention uses an optical fiber terminal device to construct an optical transmission path, which is essentially a non-contact weak current sensor. Because the optical fiber does not emit electromagnetic waves, it is not easily eavesdropped or interfered with, thereby protecting the security and privacy of the video data, fundamentally avoiding the possibility of network attacks, and realizing cross-regional transmission of industrial video data, realizing video data integration, providing real-time and reliable field operation data for artificial intelligence model training, and improving model training efficiency. Optical fiber transmission is not easily affected by electromagnetic interference, so the integrity and accuracy of video data can be guaranteed.

[0057] Reference Figure 5 , shows a flowchart of a method for securely transmitting industrial video data provided by an embodiment of the present invention, the method may include the following steps: Step 501: Acquire industrial video data through an image encoding device, and encode the industrial video data to obtain a current analog signal.

[0058] In an embodiment of the present invention, industrial video data refers to data collected by a video surveillance system in an industrial production environment. These data are usually used to monitor the production process, ensure operational safety, improve production efficiency and quality control. The industrial video data generated in the high-security partition can be obtained first.

[0059] After the industrial video data generated in the high-security partition is acquired, the industrial video data is encoded to obtain a current analog signal, that is, the video data is converted into a current analog signal, and the specific method used is not limited here.

[0060] In one embodiment of the present invention, industrial video data is encoded to obtain a current analog signal, including: converting the industrial video data to obtain an image sequence; graying the image sequence to obtain a grayscale image; extracting components of the image sequence to obtain an R channel image, a G channel image, and a B channel image; traversing the pixels of the R channel image to obtain one-dimensional R channel image data of a preset length, traversing the pixels of the G channel image to obtain one-dimensional G channel image data of a preset length, traversing the pixels of the B channel image to obtain one-dimensional B channel image data of a preset length, and traversing the pixels of the grayscale image to obtain one-dimensional grayscale image data of a preset length; performing digital-to-analog conversion on the one-dimensional R channel image data to obtain a corresponding first current analog signal, performing digital-to-analog conversion on the one-dimensional G channel image data to obtain a corresponding second current analog signal, performing digital-to-analog conversion on the one-dimensional B channel image data to obtain a corresponding third current analog signal, and performing digital-to-analog conversion on the one-dimensional grayscale image data to obtain a corresponding fourth current analog signal.

[0061] In an embodiment of the present invention, images can be extracted frame by frame from video data, and then the images can be converted to obtain an image sequence. Assuming that the size of each frame image in the image sequence is a*b, the image sequence can be grayscale processed to obtain a grayscale image. Component extraction can be performed on the image sequence to obtain an R channel image, a G channel image, and a B channel image. Assuming that the preset length is c, the pixels of the grayscale image can be traversed to obtain one-dimensional grayscale image data of a*b*c size, the pixels of the R channel image can be traversed to obtain one-dimensional R channel image data of a*b*c size, the pixels of the G channel image can be traversed to obtain one-dimensional G channel image data of a*b*c size, and the pixels of the B channel image can be traversed to obtain one-dimensional B channel image data of a*b*c size.

[0062] Furthermore, the one-dimensional R channel image data can be digital-to-analog converted to obtain the corresponding first current analog signal, the one-dimensional G channel image data can be digital-to-analog converted to obtain the corresponding second current analog signal, the one-dimensional B channel image data can be digital-to-analog converted to obtain the corresponding third current analog signal, and the one-dimensional grayscale image data can be digital-to-analog converted to obtain the corresponding fourth current analog signal.

[0063] Step 502: Obtain an optical analog signal through an optical fiber terminal, modulate the optical analog signal through a current analog signal to obtain a modulated optical analog signal, and send the modulated optical analog signal to an image decoding device.

[0064] In an embodiment of the present invention, the optical fiber terminal can obtain an optical analog signal from a laser light source, that is, obtain optical analog signals of different bands for different current analog signals, for example, obtain an optical analog signal of a first band for a first current analog signal, obtain an optical analog signal of a second band for a second current analog signal, obtain an optical analog signal of a third band for a third current analog signal, and obtain an optical analog signal of a fourth band for a fourth current analog signal, and then modulate the optical analog signals by different current analog signals to obtain modulated optical analog signals, and then send the modulated optical analog signals to an image decoding device.

[0065] In one embodiment of the present invention, an optical analog signal is obtained through an optical fiber terminal, and the optical analog signal is modulated by a current analog signal to obtain a modulated optical analog signal, including: obtaining optical analog signals of different bands through the optical fiber terminal; modulating the optical analog signals of different bands by a first current analog signal, a second current analog signal, a third current analog signal, and a fourth current analog signal, respectively, to obtain a modulated first optical analog signal, a modulated second optical analog signal, a modulated third optical analog signal, and a modulated fourth optical analog signal; and superimposing the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal to obtain a target optical analog signal.

[0066] In an embodiment of the present invention, an optical analog signal of a first band can be obtained for a first current analog signal through an optical fiber terminal, an optical analog signal of a second band can be obtained for a second current analog signal, an optical analog signal of a third band can be obtained for a third current analog signal, and an optical analog signal of a fourth band can be obtained for a fourth current analog signal. Then, the optical analog signal of the first band can be modulated by the first current analog signal to obtain a modulated first optical analog signal, the optical analog signal of the second band can be modulated by the second current analog signal to obtain a modulated second optical analog signal, the optical analog signal of the third band can be modulated by the third current analog signal to obtain a modulated third optical analog signal, the optical analog signal of the fourth band can be modulated by the fourth current analog signal to obtain a modulated fourth optical analog signal, and then the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal can be superimposed to obtain a target optical analog signal.

[0067] Step 503: decode the modulated optical analog signal through an image decoding device to obtain industrial video data, and output the industrial video data.

[0068] In an embodiment of the present invention, after the image decoding device receives the modulated optical analog signal, the modulated optical analog signal can be analyzed by the image decoding device to obtain industrial video data, and then output to a low-security partition, thereby realizing cross-zone transmission of industrial video data.

[0069] In one embodiment of the present invention, the modulated optical analog signal is decoded by an image decoding device to obtain industrial video data, including: parsing the target optical analog signal by the image decoding device to obtain a modulated first optical analog signal, a modulated second optical analog signal, a modulated third optical analog signal, and a modulated fourth optical analog signal; converting the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal to obtain a first current analog signal, a second current analog signal, a third current analog signal, and a fourth current analog signal; calculating an R channel image, a G channel image, a B channel image, and a grayscale image according to the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and synthesizing the industrial video data according to the R channel image, the G channel image, the B channel image, and the grayscale image.

[0070] In an embodiment of the present invention, an image decoding device can analyze a target optical analog signal to obtain a modulated first optical analog signal, a modulated second optical analog signal, a modulated third optical analog signal, and a modulated fourth optical analog signal, and then acquire an optical analog signal of a laser light source, and demodulate the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal through the optical analog signal to obtain a first current analog signal, a second current analog signal, a third current analog signal, and a fourth current analog signal, and then calculate an R channel image, a G channel image, a B channel image, and a grayscale image based on the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and synthesize industrial video data based on the R channel image, the G channel image, the B channel image, and the grayscale image.

[0071] The present invention discloses a method, system, device and medium for secure transmission of industrial video data. The present invention can encode the industrial video data sent by the equipment in the production control area through an image encoding device to generate a current analog signal, and modulate the current analog signal onto an optical analog signal through an optical fiber terminal to form a modulated optical analog signal for transmission. The high anti-interference ability and low signal attenuation characteristics of the optical fiber terminal ensure the security and integrity of video data transmission, and fundamentally avoid the possibility of network attacks. The present invention can receive the modulated optical analog signal through an image decoding device and decode and restore the industrial video data, and finally output it to a user server for real-time display. This process not only improves the efficiency and security of data transmission, but also enhances the reliability and applicability of the system, so that the industrial video data can be stably transmitted in harsh environments, and provide users with real-time and reliable monitoring and management support.

[0072] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0073] The present invention also discloses an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is used to execute the steps of the above-mentioned industrial video data secure transmission method.

[0074] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned industrial video data secure transmission method are implemented.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0077] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0078] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0080] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0081] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0082] The above is a detailed introduction to the industrial video data security transmission method, system, equipment and medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An industrial video data security transmission system, characterized in that: The system comprises an image encoding device, an optical fiber terminal, and an image decoding device; the image encoding device is connected to the equipment in the production control area, and the image decoding device is connected to the user server; the optical fiber terminal is connected to the image encoding device and the image decoding device respectively; The image encoding device is used to obtain the industrial video data sent by the equipment in the production control area, encode the industrial video data to obtain a current analog signal, and transmit the current analog signal to the optical fiber terminal; The optical fiber terminal is used to obtain an optical analog signal, modulate the optical analog signal by the current analog signal to obtain a modulated optical analog signal, and transmit the modulated optical analog signal to the image decoding device; The image decoding device is used for decoding the modulated optical analog signal to obtain the industrial video data, and outputting the industrial video data to the user server for display on the user server.

2. The system according to claim 1, characterized in that The image encoding device comprises an image processing module, a first port, a second port, a third port, and a fourth port, wherein the image processing module is connected to the first port, the second port, the third port, and the fourth port respectively; The image processing module is used to convert the industrial video data to obtain an image sequence, perform grayscale processing on the image sequence to obtain a grayscale image, and perform component extraction on the image sequence to obtain an R channel image, a G channel image, and a B channel image; After traversing the pixel points of the R channel image, one-dimensional R channel image data of a preset length is obtained; after traversing the pixel points of the G channel image, one-dimensional G channel image data of a preset length is obtained; after traversing the pixel points of the B channel image, one-dimensional B channel image data of a preset length is obtained; after traversing the pixel points of the grayscale image, one-dimensional grayscale image data of a preset length is obtained; Perform digital-to-analog conversion on the one-dimensional R channel image data to obtain a corresponding first current analog signal, perform digital-to-analog conversion on the one-dimensional G channel image data to obtain a corresponding second current analog signal, perform digital-to-analog conversion on the one-dimensional B channel image data to obtain a corresponding third current analog signal, perform digital-to-analog conversion on the one-dimensional grayscale image data to obtain a corresponding fourth current analog signal, send the first current analog signal to the first port, send the second current analog signal to the second port, send the third current analog signal to the third port, and send the fourth current analog signal to the fourth port.

3. The system according to claim 2, characterized in that The image encoding device further includes a centralized scheduling module, which is connected to the first port, the second port, and the third port respectively, and is used to turn on or off the first port, the second port, and the third port.

4. The system according to claim 3, characterized in that The image encoding device also includes a mode control module, one end of the mode control module is connected to the fourth port, and the other end of the mode control module is connected to the centralized scheduling module via a communication control bus, the centralized scheduling module is used to send a control instruction to the mode control module, the control instruction is used to close the fourth port, and the mode control module is used to close the fourth port according to the control instruction.

5. The system according to claim 3, characterized in that The image encoding device further includes a time pulse module and a fifth port, wherein the time pulse module is connected to the first port, the second port, the third port, the fourth port, the fifth port, and the centralized scheduling module respectively; The centralized scheduling module is used to send a preset time pulse signal to the time pulse module, and the time pulse module is used to send the preset time pulse signal to the first port, the second port, the third port, the fourth port, and the fifth port respectively, so that the first port, the second port, the third port, and the fourth port send signals at the same time.

6. The system according to claim 5, characterized in that The image encoding device further includes a quality monitoring module and a sixth port, wherein the quality monitoring module is connected to the centralized scheduling module and the sixth port, and the centralized scheduling module is also connected to the fourth port and the fifth port; The centralized scheduling module is used to detect the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port, and send the channel conditions of the first port, the second port, the third port, the fourth port, and the fifth port to the quality monitoring module; The quality monitoring module is used to generate corresponding first coding information according to the channel condition of the first port, generate corresponding second coding information according to the channel condition of the second port, generate corresponding third coding information according to the channel condition of the third port, generate corresponding fourth coding information according to the channel condition of the fourth port, generate corresponding fifth coding information according to the channel condition of the fifth port, and output the first coding information, the second coding information, the third coding information, the fourth coding information, and the fifth coding information through the sixth port.

7. The system according to claim 1, characterized in that The optical fiber terminal is connected to a first wavelength division multiplexer, and the first wavelength division multiplexer is used to obtain optical analog signals of different wavelength bands and send the optical analog signals of different wavelength bands to the optical fiber terminal.

8. The system according to claim 7, characterized in that The system also includes a second wavelength division multiplexer, and the optical fiber terminal is connected to the image decoding device via the second wavelength division multiplexer. The optical fiber terminal device is used to transmit multiple modulated optical analog signals to the second wavelength division multiplexer. The second wavelength division multiplexer is used to superimpose the multiple modulated optical analog signals to obtain a target optical analog signal, and transmit the target optical analog signal to the image decoding device.

9. The system according to claim 2, characterized in that The image decoding device comprises a photodetector and a signal processing unit; the photodetector is connected to the signal processing unit; The photodetector is used to convert the modulated light analog signal into the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and transmit the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal to the signal processing unit; The signal processing unit is used to calculate an R channel image, a G channel image, a B channel image, and a grayscale image according to the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and synthesize the industrial video data according to the R channel image, the G channel image, the B channel image, and the grayscale image.

10. The system according to claim 9, characterized in that The image decoding device also includes a driving circuit, which is connected to the photodetector and the signal processing unit respectively; the driving circuit is used to send a driving signal to the photodetector to drive the photodetector, or to send a driving signal to the signal processing unit to drive the signal processing unit.

11. A method for secure transmission of industrial video data, characterized in that: The method is applied to the industrial video data security transmission system according to any one of claims 1 to 10, and the method comprises: Acquiring industrial video data through the image encoding device, and encoding the industrial video data to obtain a current analog signal; Acquire an optical analog signal through the optical fiber terminal, modulate the optical analog signal through the current analog signal to obtain a modulated optical analog signal, and send the modulated optical analog signal to an image decoding device; The modulated optical analog signal is decoded by the image decoding device to obtain the industrial video data, and the industrial video data is output.

12. The method according to claim 11, characterized in that The step of encoding the industrial video data to obtain a current analog signal includes: Converting the industrial video data into an image sequence; Performing grayscale processing on the image sequence to obtain a grayscale image; Performing component extraction on the image sequence to obtain an R channel image, a G channel image, and a B channel image; After traversing the pixels of the R channel image, one-dimensional R channel image data of a preset length is obtained; after traversing the pixels of the G channel image, one-dimensional G channel image data of a preset length is obtained; after traversing the pixels of the B channel image, one-dimensional B channel image data of a preset length is obtained; after traversing the pixels of the grayscale image, one-dimensional grayscale image data of a preset length is obtained; The one-dimensional R channel image data is digital-to-analog converted to obtain a corresponding first current analog signal, the one-dimensional G channel image data is digital-to-analog converted to obtain a corresponding second current analog signal, the one-dimensional B channel image data is digital-to-analog converted to obtain a corresponding third current analog signal, and the one-dimensional grayscale image data is digital-to-analog converted to obtain a corresponding fourth current analog signal.

13. The method according to claim 12, characterized in that The step of acquiring the optical analog signal through the optical fiber terminal and modulating the optical analog signal through the current analog signal to obtain a modulated optical analog signal includes: Acquire optical analog signals of different wavelength bands through the optical fiber terminal; The optical analog signals of different wavelength bands are modulated respectively by the first current analog signal, the second current analog signal, the third current analog signal and the fourth current analog signal to obtain a modulated first optical analog signal, a modulated second optical analog signal, a modulated third optical analog signal and a modulated fourth optical analog signal, and the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal and the modulated fourth optical analog signal are superimposed to obtain a target optical analog signal.

14. The method according to claim 13, characterized in that The step of decoding the modulated optical analog signal by the image decoding device to obtain the industrial video data includes: The target optical analog signal is parsed by the image decoding device to obtain the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal, and the modulated first optical analog signal, the modulated second optical analog signal, the modulated third optical analog signal, and the modulated fourth optical analog signal are converted to obtain the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal; An R channel image, a G channel image, a B channel image, and a grayscale image are calculated according to the first current analog signal, the second current analog signal, the third current analog signal, and the fourth current analog signal, and the industrial video data is synthesized according to the R channel image, the G channel image, the B channel image, and the grayscale image.

15. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor is used to execute the steps of the method for secure transmission of industrial video data as claimed in any one of claims 11 to 14.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for secure transmission of industrial video data as described in any one of claims 11 to 14 are implemented.

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