A digital ship intelligent manufacturing construction method

Abstract

The present invention relates to a method for constructing digital ship intelligent manufacturing. The construction method comprises the following steps: digital dock construction; digital weight and center of gravity control; hull response monitoring system construction; operation and management integrated digital management platform construction: building a digital overall framework, mainly including a basic layer, an equipment resource layer, an execution basic layer, a coordination business layer, an operation management layer and a decision management layer; digital inspection management platform construction. The advantages of the present invention are: with the help of digital transformation, the components are based on engineering decomposition, with planning management as the command, and an integrated solution for overall design, materials, production, quality and cost management is constructed. Through the construction of the industrial Internet and the integrated application of the information system, a digital shipyard based on digital twins is constructed, facilities, equipment, resources, etc. are interconnected, early warning and analysis are carried out from multiple angles, a big data operation system is explored, a digital operation model is constructed, and finally a new digital production model is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent ship manufacturing, and in particular to a method for constructing digital intelligent ship manufacturing. Background Art

[0002] Data reliability, consistency, and interconnectivity, as well as maximizing the automation of data processing throughout the ship design and construction process, are key factors in unlocking greater efficiency, improving productivity, and increasing profitability. In digital shipbuilding, data flows are reliable, consistent, and reusable across all disciplines, stages, and ship types. Data-driven operations permeate the entire shipbuilding process, while minimizing manual intervention in data processing to maintain data integrity and optimize the shipbuilding process. Current digital technologies not only provide companies with greater flexibility and customization capabilities, enabling rapid response to market demands, but also offer shipowners a variety of auxiliary means through real-time monitoring and data analysis to precisely control energy and equipment usage during operations, improve product consistency and quality stability, minimize resource waste, reduce product defect rates, and enhance customer satisfaction, thus contributing to sustainable development.

[0003] Traditionally, positioning sections within a dock requires quality control personnel to carry total stations to various locations on the dock floor, manually locating hundreds of stainless steel positioning modules and drawing baselines, which is labor-intensive and time-consuming. Due to outdated production facilities, some equipment maintenance capabilities are weak, and energy management is inadequate. Most welding work requires manual labor, with irrational workstation design and distribution within the factory and a weak exception handling mechanism. There is insufficient planning coordination among production departments, a lack of an overall planning coordination mechanism, a low rate of completeness, and limited application of product manufacturing management systems. Furthermore, weak quality control processes and insufficient informatization within the quality management process hinder production quality control. Promoting digitalization, automation, and networking upgrades, integrating and applying full-chain software systems, and intelligently transforming hardware facilities are key future development trends for shipbuilders.

[0004] The present invention promotes the improvement of intelligent and digital factory production models, accelerates production progress, and improves production efficiency. According to the existing technical conditions and actual needs, it promotes the online application of appropriate intelligent equipment in a step-by-step manner, reasonably changes the original production operation mode, and further promotes the intelligent transformation of enterprise production conditions on the basis of "machine replacement". With the help of digital transformation, it constructs an integrated solution based on engineering decomposition and commanded by planning management, which coordinates design, materials, production, quality, and cost management. Through the construction of industrial Internet and the integrated application of information systems, it accumulates big data of operation management, builds a digital shipyard based on digital twins, uses data to support management decisions, and enhances the overall core competitiveness of the shipbuilding industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a digital ship intelligent manufacturing construction method, which can solve the problems in the existing technology that manual on-site positioning is required when positioning sections in the dock, information integration is weak, intelligent and digital production modes are weak, and production efficiency is low.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] S1. Digital dock construction: The hull centerline, rib position line, and height reference line in the original dock are recorded with reference targets established around the dock to form a unified dock coordinate system. By setting up digital rotating targets around the dock and installing stainless steel embedded parts on the dock bottom, a three-dimensional spatial coordinate system is formed in the dock area. Positioning and coordinate confirmation are performed according to the position of the first reference segment within the three-dimensional spatial coordinate system. Subsequent segment positioning operations are performed based on the three-dimensional spatial coordinate system formed by the digital rotating targets around the dock.

[0008] S2. Digital weight and center of gravity control: A digital platform for real-time monitoring and control of weight and center of gravity is used. This digital platform includes a sequentially connected ship weight and coordinate information extraction and acquisition module, a server and database module, a data calculation module, and a data display and reporting module. The digital platform extracts weight and center of gravity data from all sub-item elements in each structural module of the ship's three-dimensional design model. By calling the model parsing interface, a traversal algorithm is used to extract model element information one by one, including element name, category, weight, and coordinates. The extracted content is then cleaned and aggregated in the server and connected to the local database. Based on the scatter plot composed of the 3D spatial coordinates of the sub-item elements of all modules, the digital platform can generate corresponding data displays and reports, including data dashboards or charts that visually display the 3D scatter plot, as well as detailed report documents for shipyard and shipowner personnel to retrieve and analyze the data to facilitate decision-making by managers.

[0009] S3. Hull Response Monitoring System Construction: By installing a structural stress monitoring system on ultra-large ship structures, the system provides real-time online monitoring of ship structural safety throughout its lifecycle, issues alarms for dangerous situations, reduces the risk of hull structural damage, provides real-ship data for optimized hull structural design, and provides key information for hull maintenance work, facilitating full lifecycle support services for the hull.

[0010] S4. Construction of an integrated digital management platform for operations: Build an overall digital framework, primarily comprising the foundation layer, equipment resource layer, execution foundation layer, coordination business layer, operations management layer, and decision-making management layer, to achieve integrated, intelligent, and digitally efficient operations of core businesses and provide data support for management decision-making;

[0011] S5. Construction of a digital inspection management platform: Through the ERP and WMS integrated platform, a general quality standard system is established. Drawings can be opened online to realize the automatic push of inspection reports and the writing back of results. Inspection tasks are pushed according to different categories of personnel, material types, placement areas, suppliers, and production lines. By setting inspection plans for the first inspection, patrol inspection, and final inspection, inspection tasks are pushed to relevant responsible persons on time. At the same time, the measurement data of inspection tools such as calipers, depth gauges, three-coordinate measuring instruments, and electronic testing instruments are also automatically written into the system to accumulate big data.

[0012] Furthermore, in step S1, combined with the digital software DACS precision management system, the precision control personnel stand around the dock and use a total station to perform all-round positioning of the dock facing the rotating target next to the dock, and then transmit these data to the precision management system, and accurately position all sections of a ship through digital software simulation analysis.

[0013] Furthermore, in step S2, the digital platform forms a bar graph to indicate the weight distribution density and weight. By clicking on each position dot, the center of gravity coordinates and weight information of the position are obtained. By setting an upper limit value, an alarm is issued for weight points that exceed the value. At the same time, 3D scatter plots are displayed according to different categories of outfitting parts and equipment for managers to check different types of weight center of gravity information.

[0014] Furthermore, in step S4, the basic layer is built through the network, 5G, Wi-Fi, operating system, database, cloud service, and security control system; the equipment resource layer is built through warehouses, intelligent equipment, and energy; the execution foundation layer is built through the site resource yard management platform, intelligent warehousing management and execution control management platform, structural production execution management platform, Internet of Things platform, equipment health management platform, and energy management platform; the coordination business layer and operation management layer are built through the business integration management platform and the external collaboration platform, and the business integration management platform includes marketing management, design management, planning management, production management, supply chain management, cost management, and quality control. The decision-making management layer is built through the big data operation analysis system, the digital factory management platform, and the construction visualization platform;

[0015] The digital management platform follows the IPD management system and implements full-process project tracking and management through componentization, scenario-based, and process-based approaches. It realizes resource sharing based on the digital cloud technology at the infrastructure end and connects with the design, supply chain, workshop, field, and infrastructure equipment. It updates various data in real time according to the progress of the project. The data processing center automatically collects and analyzes data and provides it to managers for review in an intuitive manner using digital reports, curves, and graphics, so that they can ultimately make corresponding decisions.

[0016] Furthermore, in step S5, if anything that does not meet the quality requirements is found during the inspection process of the project, the unqualified products can be directly registered, and a four-party review can be initiated directly or indirectly. Automatic data collection can be performed using graphics and text, and uploaded to a shared data center. Various inspection reports can be quickly generated based on the data in the data center. Then, through the early warning notification function, the relevant persons in charge of the shipowner and the shipyard can be immediately notified by binding email and corporate WeChat, which greatly saves the time for quality inspection and preparation of various quality reports.

[0017] The advantages of the present invention are: adopting the Internet of Things + modern manufacturing mode, realizing process visualization and networking through information technology, establishing a shipbuilding process information management and control platform, establishing a complete data collection, processing and analysis system, building an integrated shipbuilding process information management and control platform, realizing intelligent data processing and decision-making, and creating an efficient shipbuilding system;

[0018] Leveraging digital transformation, components are based on engineering decomposition and guided by planning management, providing an integrated solution for design, materials, production, quality, and cost management. Through the development of the Industrial Internet and the integrated application of information systems, a digital shipyard based on digital twins is being built. Facilities, equipment, and resources are interconnected, enabling multi-angle early warning and analysis. This allows for the exploration of a big data operations system and the construction of a digital operations model, ultimately forming a new digital production model.

[0019] By guiding the production process through the import of basic data from the design source and using a data-driven approach, and rationally utilizing production data to optimize production efficiency and resource utilization, an entire intelligent manufacturing production line is ultimately formed, thereby improving the level of automated, intelligent, and digital production, making shipbuilding more standardized and normalized, shortening the production cycle, improving production capacity and efficiency, and reducing project construction hours and costs, thus truly enhancing the overall core competitiveness of the shipyard in the shipbuilding industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a digital rotating target set up around the digital dock of the present invention;

[0021] Figure 2 This is a digital dock simulation diagram of the present invention;

[0022] Figure 3 The present invention provides a 3D scatter plot of the ship's weight center of gravity and a bar graph of weight distribution density and lightness / heaviness;

[0023] Figure 4 This is a schematic diagram of the arrangement of hull monitoring points according to the present invention;

[0024] Figure 5 This is the overall architecture diagram of the production and operation integrated management platform of the present invention;

[0025] Figure 6 This is a flow chart of the digital inspection management platform of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the embodiments.

[0027] In the context of the convergence of digital and virtual-real technologies, computer networks, apps, databases, and multimedia support enable rapid resource information collection based on user needs. Product, process, and resource information is analyzed, planned, and reorganized to enable simulation of product design and functionality, as well as prototype manufacturing. To achieve the transition from "manufacturing" to "intelligent manufacturing," the following software and hardware integration measures have been developed and implemented to ensure the construction of digital shipbuilding intelligent manufacturing technology.

[0028] This specific implementation adopts the following technical solution: including the following steps:

[0029] S1. Digital Dock Construction: In this embodiment, the overall dimensions of the digital dock are: 380 meters long × 75 meters wide × 12 meters deep. Reference targets are established around the dock to record the hull centerline, rib position line, and height reference line in the original dock, forming a unified dock coordinate system.

[0030] like Figure 1 and Figure 2 As shown, by setting up digital rotating targets around the dock and installing stainless steel embedded parts on the dock bottom, a three-dimensional space coordinate system is formed in the dock area. Positioning and coordinate confirmation are performed according to the position of the first benchmark segment in the three-dimensional space coordinate system. Subsequent loading segment positioning operations are performed according to the three-dimensional space coordinate system formed by the digital rotating targets around the dock, thereby realizing rapid planning of dock ship construction, rapid loading application of dock segments, half-ship floating displacement, simulated loading application, high-precision and high-efficiency measurement and inspection of the main dimensions of the hull, and rapid marking and detection of waterline gauge, load line and load mark, so as to save working hours, improve the efficiency of crane use, and shorten the dock cycle.

[0031] The maximum lifting capacity of the gantry crane on the slipway is 300 tons, while that of the gantry crane on the dock is 500 tons. Using the digital software DACS precision management system, precision control personnel standing around the dock use total stations to perform full-scale positioning of the dock, aiming at rotating targets beside the dock. This data is then transferred to the precision management system, where digital software simulation analysis allows for precise positioning of all sections of a ship.

[0032] S2. Digital weight and center of gravity control: A secondary development program is used to design a digital platform for real-time monitoring and control of weight and center of gravity. The digital platform includes a ship weight and coordinate information extraction and acquisition module, a server and database module, a data calculation module, and a data display and reporting module, which are connected in sequence. The digital platform extracts weight and center of gravity data from all sub-item elements in each structural module of the ship's three-dimensional design model. By calling the model parsing interface and using a traversal algorithm (different customized extraction methods are used for different types of elements such as surfaces and pipes), the model element information is extracted one by one. The extracted content includes element name, category, weight, and coordinates. The data is cleaned and summarized in the server in an easy-to-understand and easy-to-use manner and connected to the local database. The digital platform can generate corresponding data displays and reports based on the scatter plot composed of the 3D spatial coordinates of the sub-item elements of all modules, including data dashboards or charts that visually display the 3D scatter plot, and generate detailed report documents for shipyard and shipowner personnel to retrieve data and analyze the data to facilitate decision-making by managers, such as Figure 3 shown.

[0033] The digital platform forms a bar graph that indicates the weight distribution density and weight. By clicking on each position dot, the center of gravity coordinates and weight information of that position are obtained. By setting an upper limit value, an alarm is issued for weight points that exceed this value. At the same time, 3D scatter plots are displayed according to different categories of outfitting parts and equipment, allowing managers to check different types of weight center of gravity information, making it more convenient and quick.

[0034] S3. Construction of hull response monitoring system: By installing a structural stress monitoring system on the ultra-large ship structure, the ship structure safety is monitored online in real time throughout its life cycle, and an alarm is issued for dangerous situations, thereby reducing the risk of hull structure damage, providing real ship data for the optimization design of the hull structure, and providing key information for hull maintenance work, which is beneficial to the full life cycle protection service of the hull. The monitoring points are arranged as follows: Figure 4 shown.

[0035] S4. Construction of an integrated digital management platform for operations: Build a digital overall framework, mainly including the foundation layer, equipment resource layer, execution foundation layer, coordination business layer, operation management layer and decision-making management layer, to achieve integrated, intelligent and digital efficient operation of core businesses, and provide data support for management decision-making. The overall architecture of the integrated production and operation management platform is as follows: Figure 5 shown.

[0036] The basic layer is built through the network, 5G, Wi-Fi, operating system, database, cloud service, and security control system; the equipment resource layer is built through warehouses, intelligent equipment, and energy; the execution foundation layer is built through the site resource yard management platform, intelligent warehouse management and execution control management platform, structural production execution management platform, Internet of Things platform, equipment health management platform, and energy management platform; the coordination business layer and operation management layer are built through the business integration management platform and external collaboration platform. The business integration management platform includes marketing management, design management, planning management, production management, supply chain management, cost management, and quality control. The decision-making management layer is built through the big data operation analysis system, digital factory management platform, and construction visualization platform.

[0037] The digital management platform follows the mature IPD (Integrated Product Development) management system, and realizes the tracking and management of the entire project process through componentization, scenario-based and process-based methods. It realizes resource sharing based on the digital cloud technology of the basic end and the connection with design, supply chain, workshop, field and infrastructure equipment. It updates various data in real time according to the progress of the project. The data processing center automatically counts and analyzes the data and provides it to managers for review in an intuitive way in the form of digital reports, curves and graphics, so that managers can make corresponding decisions.

[0038] S5. Construction of digital inspection management platform: Through the enterprise customized ERP and WMS integrated platform, a general quality standard system is established. Drawings can be opened online to realize the automatic push of inspection reports and result writing back. Inspection tasks are pushed according to different categories of personnel, material types, placement areas, suppliers, and production lines. By setting inspection plans for first inspection, patrol inspection, and final inspection, inspection tasks are pushed to relevant responsible persons on time. At the same time, the measurement data of inspection tools such as calipers, depth gauges, three-coordinate measuring instruments, and electronic testing instruments are also automatically written into the system to accumulate big data. The flow chart is as follows Figure 6 shown.

[0039] If anything that does not meet the quality requirements is found during the inspection process of the project, the non-conforming products can be directly registered, and a four-party review can be initiated directly or indirectly. Automatic data collection can be performed using graphics and text, and uploaded to a shared data center. Various inspection reports can be quickly generated based on the data in the data center. Through the early warning notification function, the relevant persons in charge of the shipowner and shipyard can be immediately notified by binding email and corporate WeChat, which greatly saves time in quality inspection and preparation of various quality reports.

[0040] On the basis of optimizing the shipbuilding process, according to the existing technical conditions and actual needs, we will promote the online application of appropriate smart APPs and digital equipment, control the pace of shipbuilding, optimize material procurement and distribution, reduce energy consumption, and make shipbuilding more standardized. In this way, we can shorten the production and manufacturing cycle, improve production capacity and efficiency, reduce project construction hours and costs, and truly enhance the overall core competitiveness of shipyards in the shipbuilding industry.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A digital ship intelligent manufacturing construction method, characterized by: The following steps are involved: S1. Digital dock construction: The hull centerline, rib position line, and height reference line in the original dock are recorded with reference targets established around the dock to form a unified dock coordinate system. By setting up digital rotating targets around the dock and installing stainless steel embedded parts on the dock bottom, a three-dimensional spatial coordinate system is formed in the dock area. Positioning and coordinate confirmation are performed according to the position of the first reference segment within the three-dimensional spatial coordinate system. Subsequent segment positioning operations are performed based on the three-dimensional spatial coordinate system formed by the digital rotating targets around the dock. S2. Digital weight and center of gravity control: A digital platform for real-time monitoring and control of weight and center of gravity is used. This digital platform includes a sequentially connected ship weight and coordinate information extraction and acquisition module, a server and database module, a data calculation module, and a data display and reporting module. The digital platform extracts weight and center of gravity data from all sub-item elements in each structural module of the ship's three-dimensional design model. By calling the model parsing interface, a traversal algorithm is used to extract model element information one by one, including element name, category, weight, and coordinates. The extracted content is then cleaned and aggregated in the server and connected to the local database. Based on the scatter plot composed of the 3D spatial coordinates of the sub-item elements of all modules, the digital platform can generate corresponding data displays and reports, including data dashboards or charts that visually display the 3D scatter plot, as well as detailed report documents for shipyard and shipowner personnel to retrieve and analyze the data to facilitate decision-making by managers. S3. Hull Response Monitoring System Construction: By installing a structural stress monitoring system on ultra-large ship structures, the system provides real-time online monitoring of ship structural safety throughout its lifecycle, issues alarms for dangerous situations, reduces the risk of hull structural damage, provides real-ship data for optimized hull structural design, and provides key information for hull maintenance work, facilitating full lifecycle support services for the hull. S4. Construction of an integrated digital management platform for operations: Build an overall digital framework, primarily comprising the foundation layer, equipment resource layer, execution foundation layer, coordination business layer, operations management layer, and decision-making management layer, to achieve integrated, intelligent, and digitally efficient operations of core businesses and provide data support for management decision-making; S5. Construction of a digital inspection management platform: Through the ERP and WMS integrated platform, a general quality standard system is established. Drawings can be opened online to realize the automatic push of inspection reports and the writing back of results. Inspection tasks are pushed according to different categories of personnel, material types, placement areas, suppliers, and production lines. By setting inspection plans for the first inspection, patrol inspection, and final inspection, inspection tasks are pushed to relevant responsible persons on time. At the same time, the measurement data of inspection tools such as calipers, depth gauges, three-coordinate measuring instruments, and electronic testing instruments are also automatically written into the system to accumulate big data.

2. A digital ship intelligent manufacturing construction method according to claim 1, characterized in that: In step S1, in combination with the digital software DACS precision management system, precision control personnel stand around the dock and use a total station to perform all-round positioning of the dock facing the rotating target next to the dock. These data are then transferred to the precision management system, and all sections of a ship are accurately positioned through digital software simulation analysis.

3. A digital ship intelligent manufacturing construction method according to claim 1, characterized in that: In step S2, the digital platform forms a bar graph to indicate the weight distribution density and weight. By clicking on each position dot, the center of gravity coordinates and weight information of the position are obtained. By setting an upper limit value, an alarm is issued for weight points exceeding the value. At the same time, 3D scatter plots are displayed according to different categories of outfitting parts and equipment for managers to check different types of weight center of gravity information.

4. A digital ship intelligent manufacturing construction method according to claim 1, characterized in that: In step S4, the basic layer is built through the network, 5G, Wi-Fi, operating system, database, cloud service, and security control system; the equipment resource layer is built through warehouses, intelligent equipment, and energy; the execution foundation layer is built through the site resource yard management platform, intelligent warehouse management and execution control management platform, structural production execution management platform, Internet of Things platform, equipment health management platform, and energy management platform; the coordination business layer and operation management layer are built through the business integration management platform and the external collaboration platform. The business integration management platform includes marketing management, design management, planning management, production management, supply chain management, cost management, and quality control. The decision-making management layer is built through the big data operation analysis system, the digital factory management platform, and the construction visualization platform. The digital management platform follows the IPD management system and implements full-process project tracking and management through componentization, scenario-based, and process-based approaches. It realizes resource sharing based on the digital cloud technology at the infrastructure end and connects with the design, supply chain, workshop, field, and infrastructure equipment. It updates various data in real time according to the progress of the project. The data processing center automatically collects and analyzes data and provides it to managers for review in an intuitive manner using digital reports, curves, and graphics, so that they can ultimately make corresponding decisions.

5. A digital ship intelligent manufacturing construction method according to claim 1, characterized in that: In step S5, if anything that does not meet the quality requirements is found during the inspection process of the project, the unqualified products can be directly registered, and a four-party review can be initiated directly or indirectly. Automatic data collection can be performed using graphics and text, and uploaded to a shared data center. Various inspection reports can be quickly generated based on the data in the data center. Then, through the early warning notification function, the relevant persons in charge of the shipowner and the shipyard can be immediately notified by binding to email and corporate WeChat, which greatly saves the time for quality inspection and the preparation of various quality reports.

Images