A system for one-way isolated transmission of information based on image encoding and recognition

Abstract

This invention discloses a system for one-way isolated transmission of information based on image encoding recognition, relating to the field of one-way isolated transmission technology. The system includes: a data acquisition unit (1), a QR code display screen (2), a barcode scanner (3), and a data storage unit (4). This invention utilizes encoding technology to convert on-site data into QR code form and transmits it via the 485 protocol. This encoding method matches the display characteristics of the liquid crystal module of the QR code display screen. The liquid crystal module precisely adjusts the driving voltage according to the reflectivity information of the QR code module, ensuring the accuracy of the QR code display. At the same time, the barcode scanner can accurately acquire and decode this specially encoded QR code, reducing decoding errors. In the data storage unit, the gateway module can store data containing reflectivity information, which can be used for subsequent analysis. Furthermore, error correction coding segments can be used during transmission to ensure the integrity and confidentiality of the data.

Description

Technical Field

[0001] This invention relates to the field of unidirectional isolated transmission technology, specifically to a system for unidirectional isolated transmission of information based on image encoding and recognition. Background Technology

[0002] One-way isolated transmission refers to the use of a transmission component with physical one-way transmission characteristics. This component only sends signals at one end and only receives signals at the other end, forming a reliable one-way channel with no feedback information.

[0003] One-way isolated transmission involves enabling secure and controllable data exchange between networks of different levels on the basis of secure isolation. This fully meets the relevant policies, regulations and regulatory requirements in isolated network environments, and helps high-density network users such as governments, public security, procuratorates, courts, and the military to strengthen compliance and meet regulatory requirements.

[0004] Based on this, the present invention designs a system for one-way isolated transmission of information based on image encoding recognition to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a system for one-way isolated transmission of information based on image encoding and recognition. It can achieve this by using transmission components with physical one-way transmission capability, where the data acquisition unit only sends signals at one end and the data storage unit only receives signals at the other end, thus forming a reliable one-way channel without any feedback information.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a system for one-way isolated transmission of information based on image encoding recognition, the method comprising: a data acquisition unit (1), a QR code display screen (2), a barcode scanner (3), and a data storage unit (4);

[0007] The data acquisition unit (1) is used to collect on-site data through the DI and AI modules, and to analyze and collect the data. It outputs the data to a QR code display screen via the 485 protocol in the form of a QR code containing light reflectivity adjustment. Simultaneously, it enables communication between the data acquisition units. The code for light reflectivity adjustment is... ,in It is the QR code number 1 The reflectivity of each module It is the benchmark for the lowest reflectivity. It is the reflectivity adjustment coefficient. Is assigned to the first Data priority values ​​for each module;

[0008] The QR code display screen (2) is used to receive QR code data transmitted by the data acquisition unit in accordance with the 485 protocol and to display the QR code;

[0009] The barcode scanner (3) is used to collect the QR code data displayed on the QR code display screen and decode and transmit it to the data storage unit;

[0010] The data storage unit (4) is used to store data locally through custom software and forward data to the next higher management unit.

[0011] Furthermore, the data acquisition unit (1) includes a CPU module (11), a digital input module (12), a digital output module (13), and a data communication module (14), wherein:

[0012] The CPU module (11) performs in-depth analysis on the collected field data, and when converting the data into QR code form, it uses an encoding algorithm based on light reflectance adjustment to assign different reflectance values ​​to each module of the QR code according to the different priority attributes of the data, and outputs the encoded QR code data to the QR code display screen through the 485 protocol.

[0013] The digital input module (12) realizes the field data acquisition function and provides raw data for encoding and transmission;

[0014] The digital output module (13) outputs a protection signal when the field industrial control system issues protection information;

[0015] The data communication module (14) ensures data communication between each data acquisition unit and ensures the consistency and accuracy of data throughout the transmission and communication process.

[0016] Furthermore, the QR code display screen (2) includes a liquid crystal module (21) and a data communication module (22), wherein:

[0017] When the liquid crystal module (21) displays a QR code, the arrangement of liquid crystal molecules and the driving voltage are precisely adjusted according to the encoding information. For important information with high priority in the QR code, the driving voltage of the liquid crystal pixels is increased to make them exhibit high reflectivity; for auxiliary information and verification information, a low driving voltage is used to produce low reflectivity.

[0018] While displaying the QR code, the data communication module (22) is responsible for transmitting the on-site collected data to the next higher management unit, ensuring real-time data sharing and further processing.

[0019] Furthermore, the data storage unit (4) includes a gateway module (41), a CS gateway configuration tool (42), and a data communication module (43), wherein:

[0020] The gateway module (41) stores the collected field data. After the data is decoded by the barcode scanner, the reflectivity information in the original code is retained for subsequent data tracing and analysis.

[0021] The CS gateway configuration tool (42) is used to configure the gateway module so that it can correctly process and store data containing different priority encoding information;

[0022] The data communication module (43) enables the transmission of on-site collected data to the next higher management unit, ensuring the efficient operation of the entire one-way isolated information transmission.

[0023] Furthermore, when the liquid crystal module (21) receives QR code data containing reflectivity information, it reads the corresponding reflectivity value for each QR code module. The LCD module calculates the driving voltage. ,in and These are the minimum and maximum driving voltages of the LCD module. and These are the minimum and maximum values ​​of the reflectivity of the QR code module. The reflectivity value is converted into a driving voltage to adjust the arrangement of liquid crystal molecules, thereby accurately displaying QR codes with different reflectivities.

[0024] Furthermore, the barcode scanner (3) detects the light intensity of the light reflected from the QR code module. The intensity-reflectivity relationship curve was calibrated. Calculate the reflectivity of each module , reflectivity value inverse operation Calculate data priority ,in It is the QR code number 1 The reflectivity of each module It is the benchmark for the lowest reflectivity. It is the reflectivity adjustment coefficient. Is assigned to the first The data priority values ​​of each module are used to decode the QR code data.

[0025] Furthermore, when storing data, the gateway module (41) uses the data priority information decoded by the barcode scanner. Data on reflectivity is stored in timestamp order, and the storage structure adopts a hierarchical storage method, with each layer corresponding to a priority. Data is stored in the corresponding layer according to the priority of the data. During data tracing and analysis, data can be obtained and analyzed by querying the data of a specific priority layer.

[0026] Furthermore, during the 485 protocol transmission between the data acquisition unit (1) and the QR code display screen (2), error correction encoding is performed on the QR code data containing reflectivity adjustment. Error correction code elements are added to the original QR code data, that is, the length of the original QR code data is... ,according to Calculate the number of error correction symbols that need to be added. ,in Rounding up corrects for errors in QR code data caused by channel interference during transmission, ensuring the integrity of the QR code data.

[0027] Compared with existing technologies, this system for one-way isolated transmission of information based on image encoding recognition has the following advantages:

[0028] I. This invention utilizes encoding technology to convert on-site data into QR code format and transmits it via the 485 protocol. This encoding method matches the display characteristics of the LCD module of the QR code display screen. The LCD module precisely adjusts the driving voltage according to the reflectivity information of the QR code module, ensuring the accuracy of the QR code display. At the same time, the barcode scanner can accurately collect and decode this specially encoded QR code, reducing decoding errors. In the data storage unit, the gateway module can store data containing reflectivity information, which can be used for subsequent analysis. Furthermore, error correction coding segments can be used during transmission to ensure the integrity and confidentiality of the data.

[0029] Second, this invention outputs on-site data in the form of a QR code that includes light reflectance adjustment by the data acquisition unit, which effectively protects the information at the beginning of the transmission stage. During the QR code generation process, different reflectance values ​​are assigned to each module according to the priority attributes of the data, which increases the difficulty of illegally obtaining information and further ensures the security of the entire information transmission process.

[0030] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1This is a schematic diagram of the framework structure of a system for unidirectional isolated transmission of information based on image encoding recognition according to the present invention;

[0033] Figure 2 This is a schematic diagram of the framework structure of the data acquisition unit in this invention;

[0034] Figure 3 This is a schematic diagram of the frame structure of the QR code display screen in this invention;

[0035] Figure 4 This is a schematic diagram of the framework structure of the data storage unit in this invention;

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1-Data storage unit, 11-CPU module, 12-Digital input module, 13-Digital output module, 14-Data communication module, 2-QR code display screen, 21-LCD module, 22-Data communication module, 3-Bar scanner, 4-Data storage unit, 41-Gateway module, 42-CS gateway configuration tool, 43-Data communication module. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides a technical solution: a system for one-way isolated transmission of information based on image encoding recognition, including a data acquisition unit (1), a QR code display screen (2), a barcode scanner (3), and a data storage unit (4). The data acquisition unit (1) includes a CPU module (11), a digital input module (12), a digital output module (13), and a data communication module (14). It collects key data on-site through DI and AI modules, and converts the data into QR codes using an encoding method based on light reflectance adjustment. The data acquisition unit outputs this specially encoded QR code data to the QR code display screen (2) via the 485 protocol. At the same time, the data communication module (14) ensures communication between the data acquisition units. The QR code display screen (2) includes a liquid crystal module (21) and a data communication module (22). It receives QR code data containing light reflectance adjustment encoding transmitted by the data acquisition unit via the 485 protocol. When displaying QR codes, the liquid crystal module (21) can accurately present modules with different reflectances. This difference in reflectance is achieved by adjusting the liquid crystal... The optimized display technology is achieved by adjusting the optical reflection characteristics of each display pixel by controlling the voltage of each pixel, thereby accurately displaying the specially encoded QR code. The data communication module (22) can also transmit the field-collected data to the next-level management unit. The barcode scanner (3) has a special optical sensor that can not only identify the black and white modules of traditional QR codes, but also accurately detect areas with different reflectivities in the QR code. By analyzing the intensity of reflected light, the barcode scanner can collect the QR code data containing the reflectivity adjustment code displayed on the QR code display screen, decode it, and then transmit the decoded data to the data storage unit (4). The data storage unit (4) includes a gateway module (41), a CS gateway configuration tool (42), and a data communication module (43), which are used to realize the local storage of data and forward the data to the next-level management unit. The gateway module (41) stores the collected key data, the CS gateway configuration tool (42) is used to configure the gateway module, and the data communication module (43) is used to realize the function of transmitting the field-collected data to the next-level management unit.

[0040] Example 1

[0041] This embodiment details the specific process of applying the present invention's image encoding recognition-based one-way isolated information transmission system in a large-scale chemical production plant to ensure the secure and reliable transmission of critical production data.

[0042] First, in the specific implementation, multiple data acquisition units (1) are deployed in various production areas of the factory, namely the reaction workshop, storage tank area, etc. These data acquisition units (1) are connected to the server in the central monitoring room through a wired network, and at the same time establish a communication link with the nearby QR code display screen (2). Each data acquisition unit (1) is equipped with a variety of types of sensors to collect different types of field data, namely temperature sensors, pressure sensors, and liquid level sensors. These sensors are connected to digital input modules (12) respectively. The central monitoring room is equipped with a data storage unit (4) to centrally store and manage the data transmitted from each data acquisition unit (1). At the same time, it is equipped with several barcode scanners (3) for inspection personnel to obtain information on the QR code display screen (2) on site and transmit it back to the data storage unit (4).

[0043] In the reaction workshop, temperature and pressure sensors installed on the reactor monitor the temperature and pressure changes during the reaction process in real time. The temperature sensor converts the continuously changing temperature value into a digital signal and transmits it to the CPU module (11). Similarly, the pressure sensor collects the temperature value. The pressure value collected by the pressure sensor is The CPU module (11) analyzes the collected data according to preset rules and determines its priority. Normal temperature and pressure data are set as low priority, while data exceeding the set safety threshold is prioritized. Or there are abnormal pressure fluctuations (pressure change rate exceeds) When this happens, these data are classified as high priority, let the data priority be 1. For low-priority data For high-priority data The formula for optical reflectance adjustment coding in optical reflectance adjustment coding The CPU module (11) calculates the reflectance value of each QR code module, where, Based on reflectivity, This is the reflectivity adjustment coefficient. For QR code modules corresponding to low-priority data, its reflectivity... For QR code modules corresponding to high-priority data, their reflectivity... The encoded QR code data is transmitted to the QR code display screen (2) via the data communication module (14) using the 485 protocol. Error correction encoding is performed on the QR code data. Let the length of the original QR code data be... ,according to Calculate the number of error correction symbols that need to be added. ( Rounding up improves the reliability of data transmission and prevents data errors caused by channel interference. After receiving the QR code data transmitted by the data acquisition unit (1), the LCD module (21) of the QR code display screen (2) reads the corresponding reflectivity value for each QR code module. Then, according to Calculate the driving voltage ,in and These are the minimum and maximum driving voltages of the LCD module. and These are the minimum and maximum values ​​of the reflectivity of the QR code module. By precisely adjusting the driving voltage of each module, the arrangement of liquid crystal molecules is adjusted, thereby accurately displaying QR codes with different reflectivities. The data upload and data communication module (22) transmits the on-site collected data (including sensor data, data collection time, equipment number and other basic information) to the next-level management unit (i.e., the server in the central monitoring room) while completing the QR code display, ensuring real-time data sharing so that monitoring personnel can understand the situation on the production site in a timely manner.

[0044] Subsequently, the inspection personnel used a barcode scanner (3) to scan the QR code on the QR code display screen (2) on site. The optical sensor of the barcode scanner (3) detected the light intensity of the light reflected from the QR code module. Then, through a pre-calibrated light intensity-reflectivity relationship curve... (This curve was obtained by measuring light intensity under a standard sample with known reflectivity and then fitting the data.) The reflectivity of each module was calculated. The calculated reflectance value is then inversely calculated. Calculate data priority Based on data priority, the barcode scanner (3) can accurately decode the QR code data and restore the original sensor data (such as temperature value). and pressure value After decoding, the data is transmitted to the data storage unit (4) via wireless communication. After receiving the data transmitted by the barcode scanner (3), the gateway module (41) of the data storage unit (4) stores the data containing data priority and reflectivity information in the order of timestamps. The storage structure adopts a hierarchical storage method, with each layer corresponding to a priority range. For example, high-priority data is stored in the first layer, medium-priority data is stored in the second layer, and low-priority data is stored in the third layer. In this way, when tracing and analyzing data, data of specific importance can be quickly obtained and analyzed by querying data of a specific priority layer. The data communication module (43) forwards the stored data to the upper-level management system. The production management software platform can perform further analysis and decision-making based on the priority and content of the data. When high-priority abnormal temperature or pressure data is received, the platform can immediately issue an alarm to notify relevant personnel to ensure the safety and stability of the production process. At the same time, engineers can retrieve historical data from the data storage unit (4) at any time for traceability analysis, view the data change trend in the production process, optimize the production process, and improve production efficiency and product quality.

[0045] Finally, if a sensor in the data acquisition unit (1) malfunctions: the digital output module (13) will detect the abnormal signal and output a protection signal. At the same time, the CPU module (11) will encode the fault information into the QR code data and display it on the QR code display screen (2). The inspection personnel will use the barcode scanner (3) to collect the fault information and transmit it to the data storage unit (4). The maintenance personnel can perform timely maintenance based on the fault records in the storage unit. If the transmission process is abnormal: during the 485 protocol transmission between the data acquisition unit (1) and the QR code display screen (2), if the QR code data is erroneous due to channel interference, the error correction coding mechanism will take effect. The receiving end (QR code display screen (2) or barcode scanner (3)) can detect and correct the error based on the error correction code. If the error cannot be corrected, the barcode scanner (3) will find the data abnormality during decoding and send an error report to the data storage unit (4). The data storage unit (4) will record the error information and notify relevant personnel to check the transmission line and equipment to ensure the accuracy of data transmission. If the barcode scanner malfunctions: The barcode scanner will automatically rescan the QR code. If it still cannot be decoded correctly after multiple attempts, the barcode scanner will issue an alarm to prompt the operator and record the abnormal situation and transmit it to the data storage unit (4). The operator can check whether the barcode scanner is working properly, whether the QR code display screen is damaged or has stains, etc., to ensure that the data can be accurately collected and decoded.

[0046] In summary, the above embodiments in industrial control systems fully demonstrate the effectiveness and reliability of the image coding and recognition-based one-way isolated information transmission method in practical applications. This method not only ensures the security of data during transmission and prevents information leakage and tampering, but also ensures the accuracy and real-time performance of data, providing strong support for the efficient and safe operation of industrial production.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A system for unidirectional isolated transmission of information based on image encoding recognition, characterized in that, The system includes: a data acquisition unit (1), a QR code display screen (2), a barcode scanner (3), and a data storage unit (4); The data acquisition unit (1) is used to acquire on-site data through the DI and AI modules, and to analyze and collect the data. It outputs the data to a QR code display screen via the 485 protocol in the form of a QR code containing light reflectivity adjustment. Simultaneously, it enables communication between the data acquisition units. The light reflectivity adjustment is encoded as follows: ,in It is the QR code number 1 The reflectivity of each module It is the benchmark for the lowest reflectivity. It is the reflectivity adjustment coefficient. Is assigned to the first Data priority values ​​for each module; The QR code display screen (2) is used to receive QR code data transmitted by the data acquisition unit in accordance with the 485 protocol and to display the QR code; The barcode scanner (3) is used to collect the QR code data displayed on the QR code display screen and decode and transmit it to the data storage unit; The data storage unit (4) is used to store data locally through custom software and forward data to the next higher management unit.

2. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 1, characterized in that, The data acquisition unit (1) includes a CPU module (11), a digital input module (12), a digital output module (13), and a data communication module (14), wherein: The CPU module (11) performs in-depth analysis on the collected field data, and when converting the data into QR code form, it uses an encoding algorithm based on light reflectance adjustment to assign different reflectance values ​​to each module of the QR code according to the different priority attributes of the data, and outputs the encoded QR code data to the QR code display screen through the 485 protocol. The digital input module (12) realizes the field data acquisition function and provides raw data for encoding and transmission; The digital output module (13) outputs a protection signal when the field industrial control system issues protection information; The data communication module (14) ensures data communication between each data acquisition unit and ensures the consistency and accuracy of data throughout the transmission and communication process.

3. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 1, characterized in that, The QR code display screen (2) includes an LCD module (21) and a data communication module (22), wherein: When the liquid crystal module (21) displays a QR code, the arrangement of liquid crystal molecules and the driving voltage are precisely adjusted according to the encoding information. For important information with high priority in the QR code, the driving voltage of the liquid crystal pixels is increased to make them exhibit high reflectivity; for auxiliary information and verification information, a low driving voltage is used to produce low reflectivity. While displaying the QR code, the data communication module (22) is responsible for transmitting the on-site collected data to the next higher management unit, ensuring real-time data sharing and further processing.

4. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 1, characterized in that, The data storage unit (4) includes a gateway module (41), a CS gateway configuration tool (42), and a data communication module (43), wherein: The gateway module (41) stores the collected field data. After the data is decoded by the barcode scanner, the reflectivity information in the original code is retained for subsequent data tracing and analysis. The CS gateway configuration tool (42) is used to configure the gateway module so that it can correctly process and store data containing different priority encoding information; The data communication module (43) enables the transmission of on-site collected data to the next higher management unit, ensuring the efficient operation of the entire one-way isolated information transmission.

5. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 3, characterized in that, When the liquid crystal module (21) receives QR code data containing reflectivity information, it reads the corresponding reflectivity value for each QR code module. The LCD module calculates the driving voltage. ,in and These are the minimum and maximum driving voltages of the LCD module. and These are the minimum and maximum values ​​of the reflectivity of the QR code module. The reflectivity value is converted into a driving voltage to adjust the arrangement of liquid crystal molecules, thereby accurately displaying QR codes with different reflectivities.

6. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 1, characterized in that, The barcode scanner (3) detects the light intensity of the light reflected from the QR code module. The intensity-reflectivity relationship curve was calibrated. Calculate the reflectivity of each module , reflectivity value inverse operation Calculate data priority ,in It is the benchmark for the lowest reflectivity. It is the reflectivity adjustment coefficient. Is assigned to the first The data priority values ​​of each module are used to decode the QR code data.

7. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 4, characterized in that, When storing data, the gateway module (41) will use the data priority information obtained from the barcode scanner decoding. Data on reflectivity is stored in timestamp order, and the storage structure adopts a hierarchical storage method, with each layer corresponding to a priority. Data is stored in the corresponding layer according to the priority of the data. During data tracing and analysis, data can be obtained and analyzed by querying the data of a specific priority layer.

8. The system for unidirectional isolated transmission of information based on image encoding recognition according to claim 1, characterized in that, During the 485 protocol transmission between the data acquisition unit (1) and the QR code display screen (2), error correction encoding is performed on the QR code data containing reflectivity adjustment. Error correction code elements are added to the original QR code data, that is, the length of the original QR code data is... ,according to Calculate the number of error correction symbols that need to be added. ,in Rounding up corrects for errors in QR code data caused by channel interference during transmission, ensuring the integrity of the QR code data.

Images