Factory-level physical security quality data transmission method

Abstract

The invention discloses a factory-level physical security quality data transmission method, which comprises the following steps: S1, after quality data information is generated in an information management layer network, an information network remote client inquires and obtains quality data, and generates a corresponding two-dimensional code; and S2, scanning the two-dimensional code through a code scanner connected to a monitoring client located in a field control layer network to read quality data information, and issuing the quality data information to a control system through the field control layer network by adopting an OPC UA protocol. According to the invention, the data channel of the information management layer network and the field control layer network is constructed, the factory quality data is transmitted to the DCS, a physical scheme is used instead of network transmission, the safety is realized, the physical isolation of the two layers of networks is ensured, and the quality data can be effectively transmitted from the information management layer network to the field control layer network at the same time. The quality data can be traced, and the control system can see the quality data on a monitoring flow chart in real time.

Description

Technical Field

[0001] The present invention belongs to the technical field of information management, and in particular relates to a factory-level physically secure quality data transmission method and system. Background Art

[0002] In the process industry scenario, the network is generally divided into the information management layer network and the field control layer network. The field control layer network has higher network security requirements and needs to ensure the safe operation of process industry automation and control systems. The field control layer network only allows data to be transmitted in one direction to the information management layer network, and does not allow data to be transmitted in two directions between the field control layer network and the information management layer network.

[0003] The factory's quality data is generally generated by the laboratory information management system (hereinafter referred to as LIMS). The network location of these systems is generally located in the information management layer network, and the data cannot be directly sent to the field control layer network where production control is located, resulting in production technology and management personnel receiving quality data feedback in a delayed manner, affecting product quality. In addition, in a medium-to-large factory, its quality data indicators may involve more than 1,000 or even more items. The quality data is generated by the laboratory and is non-periodic and short-term in nature.

[0004] In the prior art, the monitoring screen of the field control layer cannot obtain feedback of quality data. Generally, quality data is obtained in the following two ways: The first is that when the quality data exceeds the standard, the quality data management personnel or laboratory personnel will inform the production management personnel in the control room of the exceeded quality data by phone, and the production management personnel will carry out subsequent processing; The second is that when the quality data does not exceed the standard, the production manager can only access the LIMS through the terminal computer in the information management layer network, and keep querying until he sees the corresponding quality data he is concerned about.

[0005] However, both of the above two methods have the problems of low efficiency and poor real-time performance in viewing quality data. Summary of the invention

[0006] The technical purpose of the present invention is to provide a factory-level physically secure quality data transmission method and system to solve the problems of low quality data transmission efficiency and poor real-time performance in the prior art.

[0007] To solve the above problems, the technical solution of the present invention is: A factory-level physically secure quality data transmission method comprises the following steps: S1: When quality data information is generated in the information management layer network, the information network remote client queries and obtains the quality data and generates a corresponding QR code; S2: Scan the QR code through the scanner connected to the monitoring client located in the field control layer network to read the quality data information, and publish the quality data information to the control system through the field control layer network using the OPC UA protocol.

[0008] Wherein, step S1 specifically includes the following steps: S11: merging the quality data acquired in the same cycle into one quality data packet; S12: Determine whether the amount of data in the quality data packet exceeds the maximum data length defined in a two-dimensional code standard. If so, perform sub-packaging and number the sub-packaging quality data packets; if not, proceed to step S13; S13: encrypting the quality data packet after the subpackaging step by using an encryption algorithm; S14: Generate a QR code based on the encrypted quality data.

[0009] Wherein, step S2 specifically includes the following steps: S21: using a scanner to periodically read the QR code, and automatically and continuously reading the QR code during the reading cycle until the code is read successfully or the code reading stops after reaching a preset timeout period; S22: Obtaining the encrypted quality data packet through the monitoring client connected to the barcode scanner; S23: decrypting the quality data packet using a decryption algorithm, and verifying the decrypted quality data packet using a packet data verification code; S24: The quality data is published to the control system through the field control layer network using the OPC UA protocol.

[0010] A factory-level physically secure quality data transmission system, using the factory-level physically secure quality data transmission method as described above, comprising: a hard box, an information network remote client and a monitoring client; The information network remote client is mounted on the display screen, and the information network remote client is configured to query and obtain the quality data information generated in the information management layer network, thereby generating a corresponding QR code, and the QR code is displayed on the display screen; The monitoring client is connected to the barcode scanner, which scans the QR code displayed on the display screen. The monitoring client reads the quality data information and publishes the quality data information to the control system through the field control layer network using the OPC UA protocol. The display screen and the barcode scanner are both installed in the hard box, and the display direction of the display screen is set relative to the reading direction of the barcode scanner.

[0011] An electronic device includes a processor and a memory, the memory stores computer instructions that can be executed on the processor, and the processor is used to call the computer instructions in the memory to execute the factory-level physically secure quality data transmission method as described above.

[0012] A storage medium is used to store computer instructions, wherein when the computer instructions are executed, the device where the storage medium is located is controlled to execute the factory-level physically secure quality data transmission method as described above.

[0013] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art: The present invention designs a factory-level physically secure quality data transmission method and system, constructs a data channel between the information management layer network and the field control layer network, and transmits factory quality data to the DCS using a physical solution instead of network transmission, which is safe and ensures the physical isolation of the two layers of network. At the same time, the quality data can be effectively transmitted from the information management layer network to the field control layer network. The quality data can be traced, and the control system can see the quality data in real time on the monitoring flow chart. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0015] Figure 1 It is a schematic diagram of the network topology structure of the present invention; Figure 2 This is a schematic diagram of the structure of the factory-level physically secure quality data transmission system of the present invention. DETAILED DESCRIPTION

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0017] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0018] The following is a further detailed description of a factory-level physical security quality data transmission method and system proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0019] See also Figure 1 This embodiment provides a factory-level physically secure quality data transmission method. When quality data information is generated in the information management layer network, the information network remote client queries and obtains the quality data, and generates a corresponding QR code based on the obtained quality data. The monitoring client located in the field control layer network is connected to a barcode scanner, which reads the quality data content by scanning the barcode and publishes it to the control system through the OPC UA protocol.

[0020] Specifically, it includes the following steps. The first is the QR code generation stage: Since the content of a single piece of quality data is very small, the quality data is not sent in a single form. Therefore, after the quality data update cycle ends, the quality data obtained in the same cycle will be merged into a quality data packet. Then, the data volume of the quality data packet is judged. If its data volume exceeds the maximum data length that can be carried by a QR code standard, it needs to be sub-packetized according to the maximum data length that a code can carry (2500 bytes). Each sub-packet will be numbered, and the content of the same quality data will not be split into two data packets. If it does not exceed, go directly to the next step. Next, the quality data packet after the sub-packetization step is encrypted by an encryption algorithm, and a QR code is generated based on the encrypted quality data. The QR code generation uses QR Code or Data Matrix.

[0021] The second is the QR code reading stage: the QR code is scanned by the barcode scanner connected to the monitoring client located in the field control layer network. The barcode scanner automatically reads the QR code continuously until the code reading is successful or the code reading timeout is reached. When a new barcode is presented, it will re-enter the code reading state. The encrypted quality data packet is obtained through the monitoring client connected to the barcode scanner. The quality data packet is decrypted by the decryption algorithm, and then the decrypted quality data packet is verified using the packet data verification code. Finally, the quality data is published to the control system through the field control layer network using the OPC UA protocol. The modbus-TCP protocol or the UPC DA protocol can also be used.

[0022] See also Figure 2 This embodiment also provides a factory-level physically secure quality data transmission system, which applies the factory-level physically secure quality data transmission method as described above, including: a hard box, an information network remote client and a monitoring client.

[0023] The information network remote client is mounted on a display screen, which is the hardware carrier of the information network remote client. The information network remote client is used to query and obtain quality data information generated in the information management layer network, thereby generating a corresponding QR code, which is then displayed on the display screen.

[0024] The monitoring client is connected to the barcode scanner, which scans the QR code displayed on the display screen. The monitoring client reads the quality data information and publishes the quality data information to the control system through the field control layer network using the OPC UA protocol. It is worth mentioning that the QR code update cycle of the display screen needs to be multiple times greater than the scanning cycle to ensure that the QR code can be recognized.

[0025] The above-mentioned display screen and barcode scanner are both installed in a hard box, which is a light-proof structure. The display direction of the display screen is set opposite to the reading direction of the barcode scanner.

[0026] Preferably, the present embodiment also provides an electronic device, which includes a processor and a memory, wherein the memory stores computer instructions executable on the processor, and the processor is used to call the computer instructions in the memory to execute the factory-level physically secure quality data transmission method as described above.

[0027] Preferably, the present embodiment further provides a storage medium, the storage medium being used to store computer instructions, wherein when the computer instructions are executed, the device where the storage medium is located is controlled to execute the factory-level physically secure quality data transmission method as described above.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A factory-level physically secure quality data transmission method, characterized in that: The steps include: S1: When quality data information is generated in the information management layer network, the information network remote client queries and obtains the quality data and generates a corresponding QR code; S2: Scan the QR code through the scanner connected to the monitoring client located in the field control layer network to read the quality data information, and publish the quality data information to the control system through the field control layer network using the OPC UA protocol.

2. The factory-level physical security quality data transmission method according to claim 1, characterized in that: The step S1 specifically includes the following steps: S11: merging the quality data acquired in the same cycle into one quality data packet; S12: Determine whether the amount of data in the quality data packet exceeds the maximum data length defined in a two-dimensional code standard. If so, perform sub-packaging and number the sub-packaging quality data packets; if not, proceed to step S13; S13: encrypting the quality data packet after the subpackaging step by using an encryption algorithm; S14: Generate a QR code based on the encrypted quality data.

3. The factory-level physical security quality data transmission method according to claim 1, characterized in that: The step S2 specifically includes the following steps: S21: using a scanner to periodically read the QR code, and automatically and continuously reading the QR code during the reading cycle until the code is read successfully or the code reading stops after reaching a preset timeout period; S22: Obtaining the encrypted quality data packet through the monitoring client connected to the barcode scanner; S23: decrypting the quality data packet using a decryption algorithm, and verifying the decrypted quality data packet using a packet data verification code; S24: The quality data is published to the control system through the field control layer network using the OPC UA protocol.

4. A factory-level physically secure quality data transmission system, using the factory-level physically secure quality data transmission method according to any one of claims 1 to 3, characterized in that: Including: hard box, information network remote client and monitoring client; The information network remote client is mounted on a display screen, and the information network remote client is configured to query and obtain quality data information generated in the information management layer network, thereby generating a corresponding QR code, and the QR code is displayed on the display screen; The monitoring client is connected to a barcode scanner, and the barcode scanner scans the QR code displayed on the display screen. The monitoring client reads the quality data information and publishes the quality data information to the control system via the field control layer network using the OPC UA protocol; The display screen and the barcode scanner are both installed in the hard box, and the display direction of the display screen is arranged opposite to the reading direction of the barcode scanner.

5. An electronic device, characterized in that: The electronic device includes a processor and a memory, wherein the memory stores computer instructions that can be executed on the processor, and the processor is used to call the computer instructions in the memory to execute the factory-level physical security quality data transmission method according to any one of claims 1 to 3.

6. A storage medium, characterized in that: The storage medium is used to store computer instructions, wherein when the computer instructions are executed, the device where the storage medium is located is controlled to execute the factory-level physical security quality data transmission method according to any one of claims 1 to 3.

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