Data offline transmission method for ship construction management

Abstract

The invention belongs to the technical field of ship construction management, and particularly discloses a data off-line transmission method for ship construction management, which comprises the following steps: S1, data preprocessing: formatting and encrypting ship construction management data to be transmitted to improve the safety and compatibility of the data; s2, offline storage: writing the preprocessed data into a specific offline storage medium; s3, data transmission: connecting the storage medium with the target equipment through a physical contact or short-distance wireless communication technology to realize offline transmission of data; s4, data receiving and processing: the target device receives the data in the storage medium, performs data decryption and format conversion processing, and performs data integrity verification; a flexible data transmission scheme is provided by combining various offline storage media; a data encryption and integrity verification mechanism is introduced, so that the security of data transmission is ensured; the technology of NFC, Bluetooth and the like is utilized, the offline transmission process is simplified, and the transmission efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding management, and in particular to an offline data transmission method for shipbuilding management. Background Art

[0002] Ship construction management regulates the implementation process of ship design, construction, acceptance and delivery to ensure that the technical performance of newly built ships is reasonable, the quality is reliable, and they meet safety and environmental protection requirements, thereby meeting the needs of construction production. During the implementation of ship construction management, a large number of files will be transmitted.

[0003] The shipbuilding process involves the transmission and sharing of massive amounts of design data (such as 3D models and process drawings), production data (such as welding records and block assembly information), and management data (such as quality inspection reports and supply chain logistics information). Traditional data transmission methods mainly rely on online network transmission.

[0004] However, during the shipbuilding process, a large amount of design, production, and management data needs to be transmitted between different devices, departments, or locations. Traditional online transmission methods are limited by the network environment. The shipbuilding environment is complex and network coverage is unstable. Therefore, this application proposes an offline data transmission method for shipbuilding management. Summary of the Invention

[0005] The object of the present invention is to provide a data off-line transmission method for shipbuilding management, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a data offline transmission method for shipbuilding management, comprising the following steps:

[0007] S1. Data preprocessing: formatting and encrypting the shipbuilding management data to be transmitted to improve data security and compatibility.

[0008] S2, offline storage, writes the pre-processed data into a specific offline storage medium with sufficient storage capacity and good data retention performance.

[0009] S3, data transmission, connects the storage medium to the target device through physical contact or short-range wireless communication technology to achieve offline data transmission.

[0010] S4, data reception and processing: the target device receives the data from the storage medium, decrypts the data, converts the format to meet the requirements of the target system, and performs data integrity verification.

[0011] As a preferred embodiment of the present invention, the data preprocessing includes data screening, formatting, data encryption and data packaging.

[0012] The data screening extracts the data to be transmitted from the shipbuilding management system and screens the data according to the data type and urgency factors.

[0013] The formatting process converts the filtered data into a unified format, including XML or JSON, to facilitate data exchange between different systems.

[0014] The data encryption uses an encryption algorithm to encrypt the data to improve the security of the data during transmission. The encryption algorithm uses AES or RSA.

[0015] The data packaging processes the encrypted data to generate data packets that are convenient for storage and transmission.

[0016] As a preferred storage medium in the present invention, the storage medium in the offline storage includes an NFC tag, a USB flash drive, a mobile hard drive, or an SD card. The appropriate offline storage medium is selected based on the data capacity, transmission distance, and security requirements. NFC tags (suitable for fast transmission of small amounts of data), USB flash drives (suitable for medium-capacity data), and mobile hard drives or SD cards (suitable for large-capacity data).

[0017] As a preferred embodiment of the present invention, the data writing includes writing the preprocessed data packet into the selected storage medium so that the data is stored completely and accurately, and marking the storage medium, including information on data content, creation time, and transmission target, to facilitate subsequent management and use.

[0018] As preferred embodiment of the present invention, the data transmission includes physical contact transmission and close distance transmission.

[0019] The physical contact transmission is used for a storage medium that supports physical contact with an NFC tag, and data transmission is achieved by directly touching the target device.

[0020] The short-range wireless transmission is used for storage media that do not support physical contact such as USB flash drives or mobile hard drives, and uses short-range wireless communication technologies such as Bluetooth and Wi-Fi Direct to transmit data; during the transmission process, ensure that the distance between devices is within the effective range and that the transmission environment is safe and free of interference.

[0021] As a preferred embodiment of the present invention, the data transmission also includes transmission confirmation. After physical contact transmission and close distance transmission, the target device performs data transmission confirmation to confirm that the data has been received completely and accurately.

[0022] As a preferred embodiment of the present invention, the data receiving and processing includes data decryption, format conversion, data verification and data import.

[0023] The data decryption is used to decrypt the data after the target device receives the data using the same encryption algorithm as the sending end to restore the original content of the data.

[0024] The format conversion is used to convert the decrypted data into a format required by the target system for subsequent processing and analysis.

[0025] The data check is used to perform integrity check on the received data to prevent the data from being damaged or tampered with during transmission.

[0026] The data import is used to import the verified data into the target system for storage and management.

[0027] As preferred embodiment of the present invention, the storage medium has sufficient storage capacity to store pre-processed data; has data retention performance and can stably save data for a certain period of time; and has a data redundancy backup mechanism to prevent data loss or damage.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides a flexible data transmission solution by combining multiple offline storage media; introduces data encryption and integrity verification mechanisms to ensure the security of data transmission; and utilizes technologies such as NFC and Bluetooth to simplify the offline transmission process and improve transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1 The present invention provides a technical solution: a data offline transmission method for shipbuilding management, comprising the following steps:

[0033] Step 1: Data preprocessing: formatting and encrypting the ship construction management data to be transmitted to improve data security and compatibility.

[0034] Furthermore, the data preprocessing includes data screening, formatting, data encryption and data packaging.

[0035] The data screening extracts the data to be transmitted from the shipbuilding management system and screens the data according to the data type and urgency factors.

[0036] The formatting process converts the filtered data into a unified format, including XML or JSON, to facilitate data exchange between different systems.

[0037] The data encryption uses an encryption algorithm to encrypt the data to improve the security of the data during transmission. The encryption algorithm uses AES or RSA.

[0038] The data packaging processes the encrypted data to generate data packets that are convenient for storage and transmission.

[0039] Step 2: Offline storage: write the pre-processed data to a specific offline storage medium with sufficient storage capacity and good data retention performance.

[0040] Furthermore, the storage medium for offline storage includes NFC tags, USB flash drives, mobile hard drives, or SD cards. The appropriate offline storage medium is selected based on the data capacity, transmission distance, and security requirements. Examples include NFC tags (suitable for fast transmission of small amounts of data), USB flash drives (suitable for medium-capacity data), and mobile hard drives or SD cards (suitable for large-capacity data).

[0041] Furthermore, the data writing includes writing the preprocessed data packet into the selected storage medium so that the data is stored completely and accurately, and marking the storage medium, including information on data content, creation time, and transmission target, to facilitate subsequent management and use.

[0042] Furthermore, the storage medium has sufficient storage capacity to store pre-processed data; has data retention performance and can stably save data for a certain period of time; and has a data redundancy backup mechanism to prevent data loss or damage.

[0043] Step 3: Data transmission: connect the storage medium to the target device through physical contact or short-range wireless communication technology to achieve offline data transmission.

[0044] Furthermore, the data transmission includes physical contact transmission and close distance transmission.

[0045] The physical contact transmission is used for a storage medium that supports physical contact with an NFC tag, and data transmission is achieved by directly touching the target device.

[0046] The short-range wireless transmission is used for storage media that do not support physical contact such as USB flash drives or mobile hard drives, and uses short-range wireless communication technologies such as Bluetooth and Wi-Fi Direct to transmit data; during the transmission process, ensure that the distance between devices is within the effective range and that the transmission environment is safe and free of interference.

[0047] Furthermore, the data transmission also includes transmission confirmation. After physical contact transmission and close-range transmission, the target device performs data transmission confirmation to confirm that the data has been received completely and accurately.

[0048] Step 4: Data reception and processing: The target device receives the data from the storage medium, decrypts the data, converts the format to meet the requirements of the target system, and performs data integrity verification.

[0049] Furthermore, the data reception and processing includes data decryption, format conversion, data verification and data import.

[0050] The data decryption is used to decrypt the data after the target device receives the data using the same encryption algorithm as the sending end to restore the original content of the data.

[0051] The format conversion is used to convert the decrypted data into a format required by the target system for subsequent processing and analysis.

[0052] The data check is used to perform integrity check on the received data to prevent the data from being damaged or tampered with during transmission.

[0053] The data import is used to import the verified data into the target system for storage and management.

[0054] In summary, this invention first intelligently filters raw construction management data, automatically classifying it according to data sensitivity and business priority. This filtered data is then processed by a standardization engine and uniformly converted into an XML / JSON intermediate format, eliminating system heterogeneity. A dynamic key management strategy (AES for large data blocks and RSA for key exchange) is then employed for multi-layer encryption. Finally, a compression algorithm is used to generate secure data packets with digital signatures and metadata identifiers, forming the basic transmission unit.

[0055] The system features a built-in storage media decision tree, automatically selecting the optimal storage medium based on data packet characteristics (capacity, security level, and timeliness). NFC tags utilize block storage and ECC verification technology to ensure the reliability of small data. USB flash drives and SD cards utilize dual FAT32 / exFAT partitioning. RAID 1 mirroring is enabled for external hard drives. When writing to all media, an encrypted index file containing a CRC32 checksum, data fingerprint, and access control policy is generated.

[0056] For physical contact transmission (NFC), the ISO / IEC 14443 Type B enhanced protocol is used, enabling point-to-point communication in the 13.56MHz frequency band through capacitive coupling, with TDES session encryption built into the transport layer. For short-range wireless transmission, Bluetooth 5.0 LE Coded PHY mode (125kbps / 500m) or Wi-Fi Direct WPA3 encryption is dynamically selected. The transmission process uses the Selective Repeat ARQ protocol to ensure data integrity. All transmissions require bidirectional authentication based on HMAC-SHA256.

[0057] A trusted execution environment (TEE) is deployed on the target device receiving end, completing decryption operations within a secure enclave. The format conversion engine supports XSLT dynamic mapping rules, enabling lossless conversion from the source format to the target system. The validation module uses a modified Reed-Solomon code for error detection and recovery, while also verifying data timeliness and authenticity through blockchain anchors. Finally, data import uses a two-phase commit protocol (2PC) to ensure transaction consistency.

[0058] The dual protection of encrypted data packets and secure media creates a physically isolated secure channel; an intelligent media selection algorithm dynamically optimizes transmission solutions; and a cross-layer verification mechanism (bit-level CRC → packet-level checksum → file-level hash → service-level digital signature) ensures end-to-end data integrity. The entire transmission process is completely independent of network infrastructure, yet achieves management convenience and security levels similar to online transmission, making it particularly suitable for industrial scenarios such as shipbuilding, where data confidentiality and reliability are crucial.

[0059] It is worth noting that the entire device is controlled by a master control button. Since the devices matched with the control button are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A data offline transmission method for shipbuilding management, characterized in that: The following steps are involved: S1. Data preprocessing: formatting and encrypting the shipbuilding management data to be transmitted to improve data security and compatibility; S2, offline storage, writes the pre-processed data into a specific offline storage medium with sufficient storage capacity and good data retention performance; S3, data transmission, connects the storage medium to the target device through physical contact or short-range wireless communication technology to achieve offline data transmission; S4, data reception and processing: the target device receives the data from the storage medium, decrypts the data, converts the format to meet the requirements of the target system, and performs data integrity verification.

2. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The data preprocessing includes data screening, formatting, data encryption and data packaging; The data screening extracts data to be transmitted from the shipbuilding management system and screens the data according to data type and urgency factors; The formatting process converts the filtered data into a unified format, such as XML or JSON, to facilitate data exchange between different systems; The data encryption uses an encryption algorithm to encrypt the data to improve the security of the data during transmission. The encryption algorithm uses AES or RSA; The data packaging processes the encrypted data to generate data packets that are convenient for storage and transmission.

3. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The storage medium in the offline storage includes NFC tags, USB flash drives, mobile hard drives or SD cards. The appropriate offline storage medium is selected according to the data capacity, transmission distance and security requirements.

4. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The data writing includes writing the pre-processed data packet into the selected storage medium so that the data is stored completely and accurately, and marking the storage medium with information including data content, creation time, and transmission target to facilitate subsequent management and use.

5. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The data transmission includes physical contact transmission and close distance transmission; The physical contact transmission is used for the storage medium that supports physical contact with the NFC tag, and data transmission is achieved by directly touching the target device; The short-range wireless transmission is used for storage media that do not support physical contact such as USB flash drives or mobile hard drives, and uses short-range wireless communication technologies such as Bluetooth and Wi-Fi Direct to transmit data; during the transmission process, ensure that the distance between devices is within the effective range and that the transmission environment is safe and free of interference.

6. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The data transmission also includes transmission confirmation. After physical contact transmission and close distance transmission, the target device performs data transmission confirmation to confirm that the data has been received completely and accurately.

7. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The data reception and processing includes data decryption, format conversion, data verification and data import; The data decryption is used to decrypt the data after the target device receives the data using the same encryption algorithm as the sending end to restore the original content of the data; The format conversion is used to convert the decrypted data into the format required by the target system for subsequent processing and analysis; The data check is used to perform integrity check on the received data to prevent data from being damaged or tampered with during transmission; The data import is used to import the verified data into the target system for storage and management.

8. The method for offline data transmission for shipbuilding management according to claim 1, characterized in that: The storage medium has sufficient storage capacity to store pre-processed data; has data retention performance and can stably save data for a certain period of time; and has a data redundancy backup mechanism to prevent data loss or damage.

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