CN119760984B - A method for constructing a large-scale breeding equipment platform based on digital twins - Google Patents
A method for constructing a large-scale breeding equipment platform based on digital twinsInfo
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- CN119760984B CN119760984B CN202411807770.7A CN202411807770A CN119760984B CN 119760984 B CN119760984 B CN 119760984B CN 202411807770 A CN202411807770 A CN 202411807770A CN 119760984 B CN119760984 B CN 119760984B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a digital twinning-based large-scale cultivation equipment platform construction method, which belongs to the technical field of marine cultivation equipment construction and comprises the following steps of S1, obtaining the size and the number of parts, modeling the parts, assembling the parts into equipment, S2, storing the equipment, importing the equipment into a model library, S3, classifying the equipment in the model library to obtain a cultivation platform, a cultivation ship and an intelligent net cage, S4, carrying out parameterization packaging and modularized packaging on the equipment, S5, carrying out virtual assembly and virtual layout on the equipment in the model library, and S6, deriving a production material table. The digital twin-based large-scale cultivation equipment platform construction method solves the problems of cost control, technical support and improvement of an industrial chain in the process of custom design and mass production of marine cultivation equipment.
Description
Technical Field
The invention relates to the technical field of marine culture equipment construction, in particular to a digital twinning-based large-scale culture equipment platform construction method.
Background
The marine pasture is a modern scheme capable of realizing sustainable utilization of marine resources, such as increasing fishery resources and improving marine quality, by utilizing modern ocean engineering technology and natural productivity and manually interfering with the deployment of cultivation equipment to form an artificial fishing farm, various kinds of cultivation equipment applied to the marine pasture are successfully deployed at present, good economic benefits are created for cultivation markets, and the common equipment comprises a deep sea automatic rotation sea fish cultivation platform, a full-diving suspension constant-depth high-resistance platform cultivation platform, a suspension type dynamic positioning cultivation platform, a semi-diving rectangular column implicit cultivation platform and the like. Along with the continuous rising of the heat of the marine pasture, the production and manufacturing industry of large-scale marine culture equipment is urgently required to be provided with a feasible and effective solution, on one hand, the development and design period of huge volume, complex structure, multiple functions and system redundancy equipment is shortened, the market needs are met, the rapid production and manufacturing are required, the assembly and deployment are required to be realized, on the other hand, the marine environment has the characteristics of high complexity and dynamic change, and the diversified, personalized and customized capabilities of the equipment of the universal large-scale platform part are required to adapt to the specific deployment environment so as to ensure the stability, safety, benefit and sustainability of the equipment. And secondly, compared with the assembly and deployment on land, the integration, debugging, optimizing and adjusting cost and difficulty of the large-scale platform in the marine environment are higher, and a modern method is required to verify and determine the structural rationality, the functional integrity, the system coordination, the environmental adaptability and the economic sustainability of the designed marine pasture scheme.
There are many problems currently remaining to be solved in large-scale equipment development, equipment customization, and equipment mass production:
The equipment research and development design period is long, customization is insufficient, and quick response to market demands is difficult. The existing scheme lacks an effective modularization and parameterization strategy in the design stage, so that the design process of equipment is tedious and lengthy. In the face of the demand of rapid market change, the prior art is difficult to rapidly carry out modification and optimal design of equipment, the customization capability is seriously insufficient, the special deployment environment and the cultivation demand cannot be met, and the implementation speed of the marine pasture scheme is high.
And secondly, the equipment integration and assembly cost is high, and the test verification effect of equipment coordination and environment adaptation is poor. Because the large-scale marine culture equipment has complex structure and redundant system, the cost for integration, assembly and later optimization in the marine environment is far higher than that in the land environment. At present, the testing means in the prior art are not mature, and verification test is carried out by adopting a mode of equipment production and integrated assembly, so that the coordination and environment adaptation capability of equipment cannot be comprehensively verified in a deployment stage, the debugging period is prolonged, and the cost of later optimization and adjustment is obviously increased.
And thirdly, the equipment is high in mass production difficulty and imperfect in production mode. In the mass production of parts of equipment, the lack of support of standardized and semi-standardized production concepts leads to the lack of scientific planning of equipment production schemes and low export efficiency of bill of materials (BOM list). Under the condition, the material waste in the production process is serious, the resource allocation is disordered, and the production plan is difficult to effectively realize, so that the production process is low in efficiency, high in cost and low in economic benefit.
The existing method lacks scientific planning and modern technical support for how to rapidly design, customize, verify schemes and realize mass production of large-scale equipment platforms based on ocean pastures. The existing method is difficult to comprehensively evaluate the characteristics of dense structure of large equipment and difficult to analyze the rationality and the high efficiency of the coordination of the structure and the function of the cultivation equipment, so that an integral scheme with accurate selection and proper layout is designed. And secondly, the integration difficulty of various devices is high, the fusion degree is low, and the comprehensive benefit is not obvious. Communication and communication difficulties of different enterprises crossing regions in the equipment research and development process increase the design difficulty and the research and development period, so that unreasonable and unmatched places appear in the equipment during platform integration, and meanwhile, the integration difficulty and the debugging period are prolonged, so that project benefits of the marine pasture are directly influenced. In addition, from the global optimization goal of economic maximization, a standardized production mode method is needed to reduce waste of redundant materials and accelerate implementation of production plans for how related manufacturing industries perform order production of batched parts of equipment.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a digital twinning-based large-scale cultivation equipment platform construction method for solving the problems.
The technical scheme adopted for solving the technical problems is that the method for constructing the large-scale cultivation equipment platform based on digital twinning comprises the following steps:
s1, acquiring the size and the number of parts, modeling the parts, and assembling the parts into equipment;
S2, saving and importing equipment into a model library;
s3, classifying equipment in the model library to obtain a cultivation platform, a cultivation ship and an intelligent net cage;
S4, carrying out parameterized packaging and modularized packaging on the equipment;
s5, virtually assembling equipment in the model library and virtually laying out the equipment;
And S6, exporting a production material table.
Preferably, in step S4, the step of parametrically packaging the equipment includes:
s41, dividing the parts into structural parts and non-structural parts according to the functions of the equipment and the properties of the parts in the equipment;
dividing the dimensions of the part into a flexible dimension and a rigid dimension according to the function of the equipment and the properties of the part in the equipment;
s42, determining the reference size of equipment;
S43, constructing a flexible dimension parameter expression of the part according to the relation between the flexible dimension of the part and the equipment reference dimension.
Optionally, the step of parametrically packaging the equipment further comprises S44, constructing a number expression of the structural parts according to the relation between the number of the structural parts and the change of the size of the equipment.
Specifically, the step of parameterizing and packaging the equipment further comprises S45, constructing a flexible dimension coordinate expression of the part according to the relation between the flexible dimension of the part and the three-dimensional coordinate center of the equipment.
It should be noted that, in step S4, the step of modularly packaging the equipment includes:
s46, determining the proportional size of the modeled equipment and the coordinate center position of the modeled equipment;
s47, determining a model expansion mode by taking the coordinate center of the modeled equipment as a reference;
and S48, setting basic expansion parameters of the modeled equipment, wherein the basic expansion parameters comprise step sizes and the number of expansion.
Preferably, the step of virtually assembling the equipment in step S5 includes:
s51, performing assembly by replacing actual components based on equipment in a model library, and virtually checking the matching performance, the installation accuracy and the spatial distribution of the equipment in the model library.
Optionally, after virtually assembling the equipment, the equipment within the model library is evaluated by:
The method comprises the steps of evaluating the integrity of equipment in a model library, judging whether the number of parts of the equipment is complete, and if not, executing step S1 to acquire the parts again for the equipment;
The method comprises the steps of evaluating the assembly precision of equipment in a model library, virtually assembling modeled parts, verifying whether the assembly is reasonable, re-executing step S11 to re-assemble the parts if dislocation or mold penetration occurs, measuring the gap of part assembly, determining whether the assembly error is within a threshold value, and re-executing step S1 to re-assemble the parts when the assembly error exceeds the threshold value.
Specifically, the step of virtually laying out the equipment in step S5 includes:
S52, constructing a marine geographic model;
And S53, retrieving the modularized packaged equipment in the model library and arranging the modularized packaged equipment in the marine geographic model.
The digital twin-based large-scale cultivation equipment platform construction method has the advantages that in the digital twin-based large-scale cultivation equipment platform construction method, modularization, parameterization and standardization of equipment design are achieved, rapid custom design and production and manufacturing cooperation of equipment are achieved through a digital design platform, modular assembly design thought is adopted for highly general mechanical parts, standardized production is implemented, scale effect is achieved, cost is reduced, and for parts with high customization requirements, a small amount of secondary processing and configuration are conducted through semi-standardized design and production, namely, on the basis of basic standard modules, specific customization requirements are combined, and therefore the problems of cost control, technical support and improvement of an industrial chain in the custom design and batch production process of marine cultivation equipment are solved.
Drawings
FIG. 1 is a flow chart of a digital twinning-based large scale farming equipment platform construction method in one embodiment of the present invention;
FIG. 2 is a schematic diagram of a digital twinning platform model library in accordance with one embodiment of the present invention;
FIG. 3 is a schematic diagram of the device parameterization in an embodiment of the invention;
FIG. 4 is a schematic diagram of an installation module in one embodiment of the invention;
FIG. 5 is a schematic diagram of an assembly mode of a cultivation platform 'Heng Yi';
FIG. 6 is a diagram of a virtual layout of an ocean farm in one embodiment of the invention;
FIG. 7 is a schematic diagram of a digital twinning-based custom platform for large farm equipment in one embodiment of the invention.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-7, a digital twinning-based large-scale cultivation equipment platform construction method comprises the following steps:
s1, acquiring the size and the number of parts, modeling the parts, and assembling the parts into equipment;
S2, saving and importing equipment into a model library;
S3, classifying equipment in the model library to obtain a cultivation platform, a cultivation ship and an intelligent net cage; the classification management function is a foundation established by a model library, equipment can be systematically classified through clear classification standards, various kinds of equipment can be ensured to have chapters and circulation in the management and use processes, the classification of each kind of cultivation equipment is mainly based on factors such as space structures, functional purposes, use environments and the like, the cultivation platform is further classified according to functions of self-elevating type, semi-submerged type, floating type and movable type, the cultivation worker ship is further classified according to functions or activity ranges, and the intelligent network box is further classified according to functions of semi-submerged type, bottom-sitting type, full-submerged type and fixed tubular pile type;
S4, carrying out parameterized packaging and modularized packaging on the equipment;
s5, virtually assembling equipment in the model library and virtually laying out the equipment;
And S6, exporting a production material list, adopting standardized and semi-standardized thinking in the research and development process to realize efficient coordination of design, manufacture and supply chains, rapidly exporting a required bill of materials (BOM list) through a digital platform, ensuring a production mode of consistency and high efficiency of information flow and material flow from a design end to a production end, and further promoting rapid mass production of equipment.
In the digital twin-based large-scale cultivation equipment platform construction method, modularization, parameterization and standardization of equipment design are realized, rapid custom design and production and manufacturing cooperation of equipment are realized by means of a digital design platform, modular assembly design ideas are adopted for highly general mechanical parts, standardized production is implemented, scale effects are realized, cost is reduced, and for parts with higher customization requirements, small amount of secondary processing and configuration are carried out by means of semi-standardized design and production, namely, on the basis of basic standard modules and by combining specific customization requirements, through parameterization change, so that the problems of cost control, technical support and improvement of an industrial chain in the custom design and batch production process of marine cultivation equipment are solved.
As shown in fig. 2, the construction of the model library also relies on three-dimensional modeling techniques, parametric packaging techniques, and modular packaging techniques. Three-dimensional modeling techniques refer to creating object models in a virtual three-dimensional space using a computer. In the construction process of the model library, the mechanical parts can be combined into a virtual standard object by acquiring the sizes, the number and the assembly relation of the parts of the general culture equipment and utilizing third-party software to carry out three-dimensional modeling and assembly. Each virtual standard object is a general breeding device, and the objects can form a most basic model base by classification of functions, structures and the like.
However, the base model library does not have the function of customizing the equipment. Thus, there is a need for parameterized and modular packaging of equipment that enables rapid deformation and multiplexing as needed, allowing engineers to customize an piece of equipment quickly, efficiently, and accurately. By parameterized design is meant that the dimensions, geometrical relationships, and adaptive properties of the model, etc. can be controlled and adjusted by parameters. In the design process of the parameterized model, the size and the structure can be dynamically adjusted according to project requirements. For example, when the capacity of the buoyancy tank is adjusted or the grid density of the cultivation net box is changed, the adjustment can be completely reflected in the whole equipment through the association relation of the packaging, other structures can be correspondingly deformed along with the change, and a designer is not required to reconstruct the whole model. The modular design allows the equipment to be broken down into unit modules that can be run independently, allowing for independent design, testing, and optimization, and re-integration into the overall system. The modular design not only allows for faster prototype verification and troubleshooting, but also allows for greater flexibility and maintainability of the overall design.
Meanwhile, the digital equipment model relates to information of multiple layers, such as model size, size relation, color materials and physical properties, and the information is integrated into an independent and complete digital model through a packaging technology to form an information island. The encapsulation model has complete performance and attribute information, and any performance index and related attribute information cannot be lost when the encapsulation model independently runs in the virtual environment. The packaged models not only provide a reliable data basis for the overall design, but also ensure the consistency and integrity of information among the models. The model library created based on the encapsulation model can realize rapid modification and multiplexing of component equipment and ensure that the inherent information and various association relations are not affected.
The model library can be built to remarkably improve the design efficiency, so that a designer can quickly call the model with clear functional structure classification in the scheme design process, and schemes with different configurations can be conveniently generated. The digital twin technology is used for virtual verification and optimization, so that time and resource cost can be remarkably saved, and meanwhile, the accuracy and reliability of design are remarkably improved. The equipment model library has the capability of defining classification and rapid design, greatly shortens the research and development complexity and period, improves the iteration rate of products, and promotes the conversion of the marine ranches from the traditional cultivation mode to the modern and intelligent mode.
It should be noted that, taking the pile-on type movable cultivation platform as an example, as shown in fig. 3, in step S4, the step of parameterizing and packaging the equipment includes:
S41, dividing the parts into structural parts and non-structural parts according to the functions of the equipment and the properties of the parts in the equipment, wherein the structural parts are parts which bear structural main loads and play a key role in the overall stability and strength of the structure, and are generally made of high-strength materials such as beams, columns, steel plates and the like, and the non-structural parts are components which do not directly bear the structural main loads and play other functions in the equipment, such as passages, fishing nets and the like. An important way to distinguish whether a part is a structural part or a non-structural part is whether the absence and damage of the part would result in failure of the equipment structure, if so, the structural part, and if not, the non-structural part;
the sizes of the parts are divided into flexible sizes and rigid sizes according to the functions of the equipment and the properties of the parts in the equipment, the sizes of the parts are flexible sizes and are not required to be changed according to the environment, and the sizes of the parts are rigid sizes, for example, the fishing net of the aquaculture equipment is required to be changed along with the change of an aquaculture area, the length and the width of the fishing net are flexible sizes, the thickness, namely the diameter of a rope is rigid size, the length of a passage is changed along with the change of the size of the equipment, the length of the passage is flexible, the passage is required to meet the requirement of passing people, and the width and the thickness of the passage are not required to be changed, so that the width and the thickness of the passage are rigid sizes;
s42, determining the reference size of the equipment, and generally importing the equipment into a platform by taking the length, width and height of the equipment as references;
S43, constructing a flexible dimension parameter expression of the part according to the relation between the flexible dimension of the part and the equipment reference dimension.
S44, constructing a number expression of the structural parts according to the relation between the number of the structural parts and the change of the equipment size. The structural parts are required to bear the main load, and when the overall size of the equipment is changed, the main load of each structural part is changed. When the main load increases, it is necessary to increase the size of the structural parts or the number of the structural parts according to the calculated design in order to secure the stability and the firmness of the equipment structure. For example, in a pile-inserted movable cultivation platform, the load in the vertical direction is mainly borne by four positioning shafts and eighteen vertical short trusses. Six short trusses are uniformly distributed on one side of a long corridor, the length of the long corridor and the number expression which can be built by the short trusses are quickly designed according to the primary design, and the subsequent optimization can be used for carrying out load intensity calculation and load division calculation on the basis so as to carry out proper adjustment;
s45, constructing a flexible dimension coordinate expression (such as corresponding displacement or rotation of x, y and z) of the part according to the relation between the flexible dimension of the part and the three-dimensional coordinate center of the equipment.
The parameterized packaging and the modularized packaging aim to support the rapid custom design of large-scale cultivation equipment with size change and increasing number, build a general model library of the equipment with high reusability and flexibility, and need to perform modularization and parameterized packaging on the equipment. Firstly, basic size data of general culture equipment are acquired, three-dimensional modeling is carried out by using third-party software, and mechanical parts and a framework model are abstracted into standard objects through a geometric modeling technology. By using the parameterized design technology and defining parameterized expressions of geometric features in the steps S41 to S45, flexible adjustment of the size, shape and materials of the component is realized so as to adapt to different customization requirements, and flexible adjustment can be realized according to the design requirements. Through parameterization and modularization processing, equipment in a model library can be quickly multiplexed, and the equipment can be built and assembled in a platform.
The parameterized package is described:
the method comprises the steps of setting parameterization completion indexes, wherein the parameterization completion indexes comprise parameterization comprehensive indexes and parameterization accuracy indexes, the parameterization comprehensive indexes comprise 1, whether parameterization covers all key factors influencing the structure and the function of a model, 2, whether main variables and boundary conditions of equipment are parameterized, the parameterization accuracy indexes comprise 1, whether parameterization functions can accurately reflect the dimensional change of the equipment, 2, whether the sizes of parts under different equipment sizes can be reasonably matched through virtual simulation, and the parameterization completion indexes comprise verification assembly conditions and measurement assembly errors.
And (3) proportion introduction and reference setting, namely subsequently introducing a model into a platform at a proportion of 1:1, and carrying out expansion and quantity change towards the negative directions of the x axis, the y axis and the z axis when the overall size (length, width and height) of the equipment is changed by taking the coordinate axis of the lower right positioning axis as a reference. The components are divided into structural parts and non-structural parts according to the functions and actions of the components, and the dimensions are defined as flexible dimensions or rigid dimensions. For example, the surrounding truss of the farming equipment is a critical structural component that needs to withstand loads including dead weight, farming equipment, aquatic animal weight, sea waves, water, and wind, and so on, and thus can be defined as a structural part. When the overall size of the equipment is changed, the number of surrounding trusses needs to be correspondingly changed to meet the load bearing requirements. Meanwhile, the radius of the truss is defined as a rigid size, the length of the truss is defined as a flexible size, and the size, the number and the coordinate change relation between the part and the reference size are calculated.
Taking the length, width and height of a platform cultivation area as a dimension change example:
Parameter change design of the parts is performed according to the length value length of the platform cultivation area (in this embodiment, the length direction is set as the X axis in the coordinate system):
1. the left positioning shaft, the left truss, the left fishing net, the middle corridor, the middle fishing net and the eight fixed oblique trusses carry out corresponding displacement according to the length change of the platform cultivation area, and corresponding local coordinates are set to respectively obtain:
The length values of the front transverse truss and the rear transverse truss are L t = length 0.5, wherein L t is the length value of the front transverse truss or the length value of the rear transverse truss, and in scaling, an object can be simultaneously stretched by L t along the positive direction and the negative direction of the x-axis, so that L t is half of the actual length;
The length values of the front fishing net, the back fishing net and the bottom fishing net are L f = length i, wherein L f is the length value of the front fishing net, the length value of the back fishing net or the length value of the bottom fishing net, i is half of the ratio of the length of the fishing net to the length of the platform cultivation area;
the coordinates DeltaL a in the length direction of the left positioning shaft, deltaL f in the length direction of the left fishing net, deltaL p in the length direction of the left passageway, deltaL t in the length direction of the left truss, deltaL ti in the length direction of the left fixed oblique truss and DeltaL tm in the length direction of the left bottom truss are DeltaL a＝ΔLf＝ΔLp＝ΔLt＝ΔLti＝ΔLtm = -length+a, a being initial coordinate adjustment parameters;
The coordinates DeltaL p in the length direction of the middle corridor, deltaL f in the length direction of the middle fishing net, deltaL tms in the length direction of the middle vertical short truss, deltaL ti in the length direction of the middle four inclined trusses and DeltaL tm in the length direction of the middle bottom truss are respectively that DeltaL p＝ΔLf＝ΔLtms＝ΔLti＝ΔLtm = -length 0.5+a, and a is an initial coordinate adjustment parameter;
2. setting interval step1 of front vertical short trusses or back vertical short trusses, expanding corresponding number n according to length relation of length values of the platform cultivation areas, and obtaining a number expression:
3. The front aisle and the back aisle can be divided into three parts, namely two long aisles and a connecting aisle (namely a middle aisle), the two long aisles are telescopic in equal proportion according to the length change of the platform cultivation area, the left long aisle and the connecting aisle in the two long aisles are correspondingly displaced according to the length change of the platform cultivation area (because the coordinates of a lower right positioning shaft are used as a reference, the left long aisle and the connecting aisle need to be displaced after the length change of the platform cultivation area), and a parameter expression and a coordinate expression in the length direction are obtained:
the parameter expression of the length values L 1 and L 2 of the two long aisles is L 1＝L2 = (length-4) 22.175/(92.7-4), in the embodiment, the length of the platform culture area is 22.175, the length of the long aisles is 92.7, and the length of the connecting aisles is 2;
The coordinate expression of the coordinate Δl l in the length direction of the left long aisle and the coordinate Δl m in the length direction of the connecting aisle in the two long aisles is Δl l＝ΔLm = - (length-2) 0.5+a, in this embodiment, the length of the connecting aisle is 2, a is an initial coordinate adjustment parameter, during scaling, an object stretches simultaneously along the positive direction and the negative direction of the corresponding axis, so the value in the parameter expression is half of the actual length, and therefore, the parameter expression is expressed in a mode of multiplying by 0.5, namely, the actual displacement= (length-length of the connecting aisle)/2.
Parameter change design of the parts is performed according to the width value width of the platform cultivation area (in this embodiment, the width direction is set as the Y axis in the coordinate system):
1. the transverse truss of side, the fishing net of side, passageway of side, middle truss, middle fishing net, middle passageway and bottom fishing net carry out the equiproportion according to the regional width value width of platform breed and stretch out and draw back, obtain:
The parameter expressions of the width value W t of the side truss or the middle truss and the width value W f of the side fishing net or the middle fishing net are that W t＝Wf =width 0.5+s, s is an initial size adjusting parameter, and in scaling, an object can be stretched along the positive direction and the negative direction of a corresponding shaft simultaneously, so that the value in the parameter expression is half of the actual length, and is expressed by multiplying 0.5;
The parameter expression of the width value W p of the side aisle and the width value W m of the middle aisle is W p＝Wm = (width-2 x 0.2) = (width of the original side aisle/width of the original platform raising area) = 0.5 when calculating W p, i= (width of the original middle aisle/width of the original platform raising area) = 0.5 when calculating W m, since the width value width of the platform raising area is composed of three parts of "width value of aisle", "width of front long aisle" and "width of rear long aisle", wherein the values of "width of front long aisle" and "width of rear long aisle" are both 0.2, the width of front long aisle and rear long aisle, i.e. 2 x 0.2, needs to be subtracted when calculating the length of the side aisle;
The parameter expression of the width value W f of the bottom fishing net is W f = width i, i= (width of the original bottom fishing net/width of the original platform cultivation area) 0.5, wherein in scaling, an object stretches along the positive direction and the negative direction of the corresponding shaft simultaneously, so that the value in the parameter expression is half of the actual length, and is expressed by multiplying 0.5;
2. the vertical short trusses on the side face are provided with interval step2, corresponding numbers are expanded according to the width relation, rounding errors are eliminated, and a number expression is obtained: wherein width% step2 is the remainder of width over step 2;
3. the positioning shaft at the back, the fishing net at the back, the aisle at the back, the truss at the back and the four fixed oblique trusses are displaced according to the width value width of the platform cultivation area, and the corresponding local coordinates are set to obtain the coordinate expression in the width direction:
The coordinate expression of the width direction coordinate W a0 of the positioning shaft on the back surface, the width direction coordinate W f0 of the fishing net on the back surface, the width direction coordinate W p0 of the passageway on the back surface, the width direction coordinate W t0 of the truss on the back surface and the width direction coordinate W ti0 of the fixed oblique truss is that W a0＝Wf0＝Wp0＝Wt0＝Wti0 = width+a, a is an initial coordinate adjustment parameter;
parameter change design of the part is performed according to the height value height of the platform cultivation area (in this embodiment, the height direction is set as the Z axis in the coordinate system):
1. the vertical short truss stretches out and draws back with the constant proportion of locating shaft, obtains:
The height value H t of the vertical short truss is expressed by using a mode of multiplying the parameter expression by 0.5, wherein the parameter expression is that H t =height is 0.5+s, s is an initial size adjustment parameter, and in the zooming process, an object stretches along with the positive direction and the negative direction of a corresponding shaft at the same time, so that the value in the parameter expression is half of the actual length;
The height value H d of the positioning shaft is expressed by a parameter expression that H d =height i, i= (the height of the original positioning shaft/the height of the original platform culture area) is 0.5, wherein in scaling, an object stretches along the positive direction and the negative direction of the corresponding shaft simultaneously, so that the value in the parameter expression is half of the actual length, and is expressed by multiplying 0.5;
2. Equal proportional displacement of the lowest truss and the lowest fishing net is achieved, and the following steps are achieved:
The coordinate expression of the coordinate delta H t of the lowest truss in the height direction and the coordinate delta H f of the fishing net in the height direction is delta H t＝ΔHf = -height+a, and a is an initial coordinate adjustment parameter;
3. The lowest truss is provided with a spacing step3, the corresponding number is expanded according to the height relation, rounding errors are eliminated, and a number expression is obtained Wherein heigth% step3 is the remainder of the height over step 3.
And (3) evaluation and optimization of the completion degree:
And carrying out parameterization modification on the equipment subjected to parameterization encapsulation, and evaluating corresponding parameterization completion indexes. And (3) evaluating unqualified parts, optimizing the parts, and re-evaluating reexamine until the equipment meets the standard to update the model library, wherein the model library comprises 1, the parameterized packaging for supplementing the missing of the affected parts, 2, the parameterized function of the parts is adjusted, and 3, the part spread attribute is redefined.
It should be noted that, as shown in fig. 4, in step S4, the step of modularly packaging the equipment includes:
s46, determining the proportional size of the modeled equipment and the coordinate center position of the modeled equipment;
s47, determining a model expansion mode by taking the coordinate center of the modeled equipment as a reference;
and S48, setting basic expansion parameters of the modeled equipment, wherein the basic expansion parameters comprise step sizes and the number of expansion.
Description is made of modular encapsulation:
The method comprises the steps of setting modularized completion indexes, wherein the modularized completion indexes comprise modularized independence indexes, modularized reusability indexes and modularized expansibility indexes, the modularized independence indexes comprise 1, confirming that each equipment can independently complete specific tasks and are not interfered with each other through function division, 2, confirming that each equipment can change size and rapidly expand columns and are not interfered with each other through parameter or quantity change, the modularized reusability indexes comprise 1, checking whether the equipment can be rapidly called in different scenes and flexibly used in a system environment, 2, whether the equipment keeps key interfaces and can be rapidly connected according to different requirements, and guaranteeing multiplexing flexibility, and the modularized expansibility indexes comprise whether the equipment can rapidly expand columns according to the requirements.
And (3) proportion introduction and axle center setting, namely introducing a 1:1 proportion on the basis of a parameterized model to form a pile-inserted movable cultivation platform, and setting the center of gravity of a cultivation area as an axle center.
Selecting a model, linearly expanding the model in the x-axis direction, and setting adjustable step length and expanding number.
And (3) linearly expanding the array in the y-axis direction, namely linearly expanding the array in the y-axis direction of the model on the basis, and setting adjustable step length and quantity to realize comprehensive array expansion.
And (3) evaluating and optimizing the degree of completion, namely performing module modification on equipment subjected to modular encapsulation, and evaluating corresponding modular degree of completion indexes. And evaluating unqualified equipment to perform optimization, and re-evaluating reexamine the optimization until the equipment meets the standard to update to a model library, wherein the equipment modularization parameters are adjusted 1, and the equipment list expansion attribute is redefined 2.
Preferably, the step of virtually assembling the equipment in step S5 includes:
S51, performing assembly by replacing actual components based on equipment in a model library, performing verification of equipment matching performance, installation accuracy and spatial distribution of equipment in a virtual verification model library, performing verification of a part assembly mode and an assembly scheme in a semi-simulation mode, performing expansion analysis on a large-scale marine culture platform by taking a constant first number of a rectangular movable column hidden culture platform shown in fig. 5 as an example, wherein a main structure frame of the platform, such as the main frame, needs to be assembled and reinforced by welding, a main frame structure and a supporting beam are assembled by analysis, the main frame and an auxiliary structure, key parts, such as a culture net cage, a buoyancy tank and the like, are assembled by bolts, the connection part of a passageway thin floor, the quick connection and fastening of a peripheral railing of the net cage, a safety protection equipment pipeline and a thinner metal plate need to be riveted, the fixing and sealing of a cable need to be connected by bonding, and in addition, a large number of key connection are also related to the connection of a shaft of a rotating machine and a hub. The assembly process of the integral platform is complex and tedious, and relates to various assembly methods and a plurality of assembly points. Therefore, by assembling the semi-simulation mode based on the three-dimensional model instead of the actual assembly, virtual verification of assembly matching, installation accuracy and space distribution scientificity of the whole equipment is very necessary, and a set of mature platform assembly scheme is generated;
for equipment belonging to a moving part, the quantity and the position of the equipment are assembled in a virtual layout mode through the motion attribute, the signal logic and the motion logic which are configured when the equipment is parameterized and packaged, wherein the motion and the signal packaging are independent of the parameter packaging, and the packaging flow of the motion and the signal packaging is sequentially that the motion attribute is set, a driver is added, a signal is created, a driver signal is bound and the motion logic is set;
After step S51, the size of the parameterized packaged device is adjusted;
the breeding platform also relates to the assembly problem of part of moving parts, so that the difficulties of high time consumption and high cost in the process of production, manufacturing, assembly, signal control, system configuration and experiment verification in the traditional equipment scheme verification are effectively eliminated, the method is provided, the moving attribute, the signal logic and the moving logic are configured for the workpiece during the encapsulation processing of the workpiece, the synchronous connection of the analog data and the signals is realized through the signal interface of the connecting component, the dynamic behavior of the component under the working condition is simulated by using the physical motion simulation, the logic verification and the control test of the equipment are rapidly carried out by using the virtual assembly and simulation method, and the high-efficiency communication and the integrity of the action signal transmission among the components and the operation stability and rationality of the working room are ensured.
Taking a crane assembly as an example, the crane assembly is required to complete feeding work in a specific area in a certain range, the feed is grabbed from an offshore feed ship or a feed warehouse, and the crane assembly is moved to a breeding feeding area for feeding animals. Therefore, the platform is utilized for customized design, the arrangement of the platform can cover the whole cultivation area, and resource waste or work bottleneck caused by too many or too few cranes can not be formed.
And analyzing a working area, namely calling a breeding equipment platform in a model library, defining the boundary of a breeding area and determining a size range by using a measuring tool. And (3) carrying out coverage rate evaluation on the basis of geometric boundary measurement, and marking accurate coordinate positions and feeding coverage ranges of the material taking points and the feeding points. The data of the virtual three-dimensional space of the structure defines the dynamic range of crane operation, including data of maximum and minimum extension radius, rotatable angle, vertical and horizontal operation limit, etc.
And selecting the model according to the working range, namely comparing the technical indexes with the model selection of the crane and performing parameter matching optimization. Firstly, the model of the crane with corresponding operation capacity and technical parameters is selected from a model library according to a defined working range. And secondly, considering technical indexes such as rated lifting capacity, lifting speed, mechanical strength, crane weight, structural size and the like of the candidate crane model.
According to the space selection quantity, constructing a virtual scene by utilizing a platform, determining the position of a feed ship/warehouse and the layout of a working platform, ensuring an unobstructed operation path and maximum space utilization efficiency after the crane is arranged, and carrying out arrangement optimization on the scheme by adopting various arrangement modes such as matrix arrangement, symmetrical distribution and the like according to the form of a working area and the distribution of feeding points. Meanwhile, the weight of each feeding feed of a single crane, namely the working load condition, is calculated, so that the feeding task is completed within a specific time, and the number of the cranes is reduced as much as possible under the condition that overload does not occur.
And (3) verifying a model library calling component, namely arranging a crane component in a virtual environment, performing real-time dynamic virtual simulation, and ensuring the accuracy of a model working range. First, the arrangement rationality is checked. Because the crane is required to bear a large weight, it is required to be arranged at a position where the structure is stable. Meanwhile, the crane needs to carry the fish material to perform actions such as plane rotation, lifting of the fish material and the like, the working space is required to be abundant, the movement track is free of obstacles, otherwise, the mounting position of the crane is adjusted, or the methods of removing the obstacles, limiting the working route of the crane and the like are adopted. Secondly, checking the rationality of the work, verifying whether the working range of the crane meets the requirement through simulation, and if the crane cannot meet the working requirement, reselecting the model of the crane. In addition, the crane working track planning can be carried out, and a shortest path method and a piecewise linear method are generally adopted. The shortest path method uses a fish material taking point as a starting point and a feeding point as an end point, and the linear distance between the two points is the working path of the crane, and the piecewise linear method uses the same starting point and end point of the method to horizontally translate and vertically translate between the two points, and can increase horizontal rotation to change the horizontal throwing angle of the crane on the basis. The two methods select the efficient route scheme with the shortest time, highest safety and relatively short route through virtual verification. Based on the verification process, the position and related configuration of the component can be effectively adjusted, and the continuous iterative optimization process of the strategy of design, simulation optimization and redesign is realized.
Optionally, after virtually assembling the equipment, the equipment within the model library is evaluated by:
The method comprises the steps of judging whether the number of parts of equipment is complete or not, if not, executing a step S1 to reacquire the parts for the equipment to supplement corresponding parts, judging whether the virtual geometry and the topological structure of the parts of the equipment are consistent with those of actual parts, and if not, adjusting the size and the geometric structure of the parts of the equipment in the model library according to the actual parts;
The method comprises the steps of evaluating the assembly precision of equipment in a model library, virtually assembling modeled parts, verifying whether the assembly is reasonable, if dislocation or mold penetration occurs, indicating that the assembly is wrong, re-executing step S11 to re-assemble the parts, measuring the assembly clearance of the parts, determining whether the assembly error is within a threshold value, and re-executing step S1 to re-assemble the parts when the assembly error exceeds the threshold value.
It should be noted that the step of virtually laying out the equipment in step S5 includes:
S52, constructing a marine geographic approximate three-dimensional model;
S53, the modularized packaged equipment in the model library is fetched and arranged in the ocean geographic approximate three-dimensional model;
The overall layout of the equipment needs to be planned and designed by combining the marine geographic information. First, a marine geographic approximate three-dimensional model including elements such as coast shapes, island shapes, sea area depths and the like is constructed to simulate marine complex geographic features. Under the condition that the characteristics of the geographic environment and the cultivation requirements are met, equipment is selected according to the working type, the application range, the cultivation type and the budget cost of the equipment, and cultivation equipment with high environment coordination degree is called from a model library and is distributed in a linear type, a delta type, a rectangular type and the like. The method has the advantages that the advantages of smooth water flow, flexible expansion, low space utilization rate, poor wind wave resistance, high management concentration and high fish material utilization rate, dense cultivation space, complex planning layout and consideration of an integral structure and a plurality of connection points, and rectangular arrangement has the advantages of stable water flow, high wind wave resistance, high space utilization rate and convenient management and maintenance, and has higher requirements on regional division and arrangement design planning difficulty and higher input cost in the earlier stage. Meanwhile, the marine culture equipment keeps the interval of 50 to 100 meters according to the species, the ocean current flow rate and the water quality of culture, ensures good water circulation, keeps the channel interval of several meters to tens of meters, and allows the operation ship to safely log in and pass through. Based on the design, proper distance between the devices and device connectors can be set, and the devices after modularized packaging are utilized for efficient layout and deployment.
And (3) carrying out preliminary planning on a pasture scheme according to a natural environment, fully considering factors such as marine climate, marine geology, seawater quality, marine biomass quality and the like, and screening out cultivation equipment meeting the selection conditions. Building a corresponding marine virtual environment, and calling the breeding equipment of a model library to rapidly and efficiently layout and deploy according to the characteristics of the geographic environment and the breeding requirements and the layout requirements of the breeding equipment based on the simulated environment model. By the method, the cultivation effect, the environmental influence and the economic benefit of different layout schemes under various environmental conditions, and the stability and the operation capability of equipment are effectively evaluated. Starting from economic feasibility, layout rationality, operation effectiveness and output sustainability, a modern method of customizing equipment, comprehensive evaluation scheme and sustainable simulation optimization is realized by means of model encapsulation, simulation assembly and the like on a virtual platform through a virtual assembly and simulation arrangement mode and driving with engineer experience and virtual verification effect. The enterprise can test and debug equipment design and overall layout in advance with extremely low cost, theoretical verification and simulation verification of the scheme can be carried out on the platform before the scheme lands, the integration, deployment, test and optimization costs of the enterprise are greatly reduced, the time from the scheme design to implementation is shortened, the economic benefit generation period of marine pasture projects is effectively accelerated, and a solid technical foundation is provided for scientific layout and operation of the marine pasture.
The digital technology and the analog simulation technology are used for assisting in planning and designing the marine pasture layout, and multiple influences of different layout schemes on the cultivation effect, the environmental influence, the economic benefit and the like can be effectively simulated, predicted and estimated in the virtual simulation environment by establishing a virtual model of the marine pasture, assembling virtual equipment and deploying the design scheme. And meanwhile, each unit is independently tested by utilizing the virtual simulation platform, and the integrated test is carried out on the system, so that the functional and performance reliability of the unit and the coordination and stability of the whole equipment platform can be effectively ensured.
In the scheme, the technology adopted for constructing the digital twin-based large-scale cultivation equipment customizing platform shown in fig. 7 is as follows:
(1) Submitting input data based on vertex data, material properties and illumination information input by a system, performing screen picture rendering by a bottom hardware GPU and performing secondary three-dimensional simulation graphic display UI rendering;
(2) Configuring basic attributes of a physical engine, constructing a digital twin simulation environment containing gravity, friction and acceleration, allowing the digital twin simulation environment to execute mechanical movements such as collision, falling and linear movement, and providing similar physical kinematic simulation for a platform;
(3) Defining and packaging a twin model based on ECS, and decoupling and communicating modules by adopting dependent injection and events, defining a basic assembly comprising an entity assembly, a sensor assembly and a processor assembly, defining a system for processing each assembly, creating a dependent injection framework for a control system and using the dependent injection, defining various event systems for decoupling and communication between the modules, and enhancing the flexibility and maintainability of the system;
(4) The configuration compiler automatically acquires the code prompt and the error prompt through the functions of real-time code prompt and code check by using the LSP protocol, dynamically loads and operates the user script, increases the automatic detection of file change of a monitor and reloads the script, and provides good programming experience and development environment for the platform;
(5) And the interaction of the user graphical interface is realized based on Swing, and the Windows/Linux/Mac cross-operating system operation is realized.
The digital twin-based large-scale cultivation equipment platform construction method aims at customizing large-scale cultivation equipment of marine pasture planning, provides a method for standardized design, integrated assembly, unit test and simulation optimization of the marine pasture equipment, and develops a modern marine pasture design planning platform to solve the following key technical problems that firstly, a general model library is built through equipment parameterization and modularization strategies, research and development complexity is reduced and design flexibility is improved in a standardized assembly mode, and the customized design of the large-scale cultivation equipment is supported through rapid modification of equipment parameterization and modularized rapid multiplexing. The method comprises the steps of (a) constructing an equipment customizing platform, combining a marine scene simulation model, carrying out equipment virtual assembly and scheme layout planning through a digital twin technology so as to design, assemble, debug and optimize and shorten the research and development period in parallel and reduce the research and development cost, and (b) carrying out standardized and semi-standardized research and development by utilizing equipment parameterization and modularization strategies, and rapidly exporting a production BOM bill of materials by using a model library and model tree functions of a software platform so as to develop and reform, promote production and reform and promote rapid mass production of equipment.
The principle of the scheme is as follows:
Aiming at equipment size change in large-scale cultivation equipment design, the coordination problem of complex structures needs to be considered deeply. High precision geometric fit designs are required to ensure structural integrity coordination and robustness. The design of dynamic components requires attention to location rationality, operational science, and economic efficiency. The scheme comprehensively considers the aspects of mechanical structure, functional adaptation, dynamic component design, layout optimization and the like through means of parameter encapsulation technology, virtual layout, motion simulation and the like. The optimal size and position of the work of the assembly are determined by utilizing virtual assembly and layout through parameterization and modularization functions to quickly change the size and change the position of the assembly. The static assembly ensures the stability and the sustainability of the operation of the equipment under reasonable structural coordination, and the dynamic assembly realizes the maximum coverage of the working range on the premise of the minimum number, and ensures the disposition positions and the number of the dynamic assembly to achieve the aims of maximizing the conservation efficiency and minimizing the resource consumption. Aiming at the change of the number of equipment, the overall layout optimization of the distribution design and the scheme position of the equipment is required. According to the scheme, a simulated marine environment model containing coastline, sea area depth and other factors is built by combining the virtual simulation technology with marine geographic information. On the basis, the modular design concept is adopted, equipment is packaged into independent and interface standardized modules, and rapid and efficient layout and deployment are performed according to the characteristics of the geographic environment and the cultivation needs.
In order to solve the problems of multiple functions and adaptation of complex structures of static components in equipment, the problems of position rationality, number scientificity, working efficiency and the like of dynamic components, and the problems of space rationality and environmental suitability of overall arrangement of pastures, a custom platform is supported by large-scale cultivation equipment, four common equipment models are built, core components are split, mechanical components and framework models are objectified, modularized and parameterized, the equipment platform is unitized, and the components are quickly assembled and allocated by a method of variant design and configuration design, so that a dynamic arrangement strategy and an efficient arrangement strategy of the equipment are formed, and scientific basis and technical guarantee are provided for large-scale construction of marine pastures.
Through modularization, parameterization and standardization design of the equipment, and cooperation of rapid custom design and production and manufacture of the equipment by means of a digital design platform, the BOM list is rapidly exported, so that the contradiction problem between custom design and mass production of the large-scale cultivation equipment can be effectively solved. The standardized and semi-standardized production modes ensure flexibility and adaptability of products while reducing cost, and provide a solid technical foundation for large-scale equipment production and industrial chain perfection.
Compared with the prior art and method, the method has the advantages and outstanding effects that firstly, the general assembly library and the model library are built through the modularized and parameterized strategy of equipment design. In the digital twin planning platform, through rapid modification of equipment parameterization and rapid multiplexing of modularization, design complexity is reduced, flexibility is improved, equipment research and development design period is shortened, customizing capability is enhanced, and market demands are responded rapidly. And secondly, constructing an environment simulation model of the complex system through a platform, and comprehensively testing and verifying the structural rationality and the functional integrity of the equipment by utilizing a virtual simulation technology. Based on the method, the adaptability of the equipment under different environmental conditions is optimized, and the problems of mismatching and unreasonable occurrence in actual deployment are avoided, so that the debugging period is shortened, the equipment integrated debugging cost is reduced, and the equipment coordination and environmental adaptability are improved. Moreover, a standardized/semi-standardized production mode is promoted by a parameterized/modularized research and development method, a bill of materials (BOM list) is automatically exported, the batch production flow of equipment is effectively simplified, the landing cost of a scheme is reduced, the resource allocation is optimized, and the material waste is reduced. Therefore, the production efficiency is improved, the implementation of a production plan is quickened, the landing cost of the whole scheme is reduced, and finally the maximization of economic benefit is realized.
According to the scheme, the customized digital twin platform based on the large marine farm cultivation equipment is built, the packaging unit builds a model library, the parameter customization equipment is changed, the overall layout of the planning scheme, the virtual assembly and simulation deduction scheme, the design scheme optimization and correction and the rapid export of the production material table are achieved, the defects of the prior art are effectively overcome, and the design and deployment efficiency of the large marine cultivation equipment is greatly improved. By carrying out parameterization/structuring treatment on the cultivation equipment, the standard/semi-standard method of the objective thinking promotes the batch production of the equipment in the manufacturing industry, and improves project economy and comprehensive benefits. The method provides a powerful technical support and practical path for the efficient and sustainable development of the ocean pasture, guarantees the modernization progress of the ocean pasture construction, and provides a technical support for solving the problem of ocean fishery resource degradation.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
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