CN114694444A - Three-dimensional immersive chemical virtual simulation system - Google Patents
Three-dimensional immersive chemical virtual simulation system Download PDFInfo
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Abstract
The invention discloses a three-dimensional immersive chemical virtual simulation system which comprises a three-dimensional model subsystem, a process simulation subsystem, a process control subsystem and a virtual reality subsystem which are mutually independent. The subsystems independent of each other may be established on the same computer/server or on a plurality of computers/servers. According to the requirements of the simulation system on subsystem functions, software or hardware which meets specific communication regulations is adopted to establish each subsystem, and hardware replacement and software updating are carried out when necessary. The user can adopt the system of non-single source development according to the demand, carries out the independent assortment of subsystem and satisfies diversified demand, improves simulation system's openness, flexibility and expansibility.
Description
Technical Field
The invention belongs to the field of virtual reality and digital factory systems, and particularly relates to a three-dimensional immersive chemical virtual simulation system.
Background
The chemical production process is complex in process, numerous in equipment, machines and pipelines, the processed materials are dangerous substances, the unit operation conditions are harsh, and the risk factors are latent in production, so that the possibility of accidents and the caused consequences are more serious than those of other industries.
The incidence rate of safety accidents and the severity of incident consequences in the chemical industry are constant in all industries, and the phenomenon is mainly caused by insufficient safety consciousness or improper operation of production personnel. Safety training performed for chemical safety production often lacks immersion and a realistic interaction function, and operators are difficult to link theoretical knowledge with a complex dynamic chemical process, so that the training effect is poor.
Patent document CN 108389462A-a factory laboratory training system combining virtuality and reality, which combines virtuality and reality as main features to simulate and show the full life cycle of products manufactured in an intelligent factory. Patent document CN110111671A discloses training systems for simulating intelligent factories, and most of these training systems are applied in personnel training level and cannot fully utilize the characteristics of simulation systems.
In order to solve the problem, the research of a chemical simulation system based on a virtual reality technology is deepened continuously, and the immersion and the interactivity are improved continuously. However, the development of the current system is limited to the realization of a specific flow, all modules are coupled after being established and packaged in software, the adjustment and upgrade optimization depend on a developer, and a user cannot perform the improvement and the refinement of the system independently.
Over time, the user's needs for the simulation system may also change. With the trend of increasing the scale of chemical systems and diversifying the demands of users, developing the entire contents of a simulation system by one party is generally not an optimal solution. Therefore, a chemical simulation system which can accommodate the co-development of multiple parties and has high expandability and flexibility is needed.
Disclosure of Invention
In view of the above, the present invention provides a three-dimensional immersive chemical virtual simulation system, which performs a chemical full-process simulation corresponding to an actual process through a plurality of independent subsystems capable of being freely combined, and provides an immersive virtual environment for personnel training.
In order to achieve the above object, an embodiment of the present invention provides a three-dimensional immersive chemical virtual simulation system, which includes a three-dimensional model subsystem, a process simulation subsystem, a process control subsystem, and a virtual reality subsystem;
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and providing a three-dimensional visual platform;
the flow simulation subsystem is used for simulating a chemical production process according to the data and the model of the chemical process;
the virtual reality subsystem is used for establishing a virtual factory and providing the virtual factory for a user to realize virtual reality roaming and interactive operation of the factory;
the process control subsystem is used for controlling the flow simulation subsystem and the virtual reality subsystem to work;
the subsystems run independently from each other and are established on one or more electronic devices, each subsystem can independently update software while performing corresponding hardware configuration, and communication is established between 1 subsystem or at least 2 subsystems according to actual application requirements to form an actual application system.
In one embodiment, in the three-dimensional model subsystem, a three-dimensional visualization platform is provided for visualizing the three-dimensional model;
the construction method of the three-dimensional model comprises engineering drawing modeling, on-site three-dimensional reconstruction and standard module splicing modeling.
In one embodiment, the process simulation subsystem is provided with process simulation software comprising a plurality of functional units, calls the multifunctional units to perform mathematical model description on the chemical process, and runs the mathematical model description according to configuration parameters to simulate an actual production process to obtain dynamic data, wherein the chemical process includes, but is not limited to, a chemical reaction process, a heat exchange process, a separation process and the like.
In one embodiment, the simulation software is also capable of implementing the design, economic evaluation, operational simulation, optimization analysis, and troubleshooting tasks of a chemical process.
In one embodiment, the virtual reality subsystem includes a virtual factory building module and a virtual reality device, the virtual factory building module builds a dynamic virtual factory according to a three-dimensional model and dynamic data of a chemical industry scene, and transmits the dynamic virtual factory scene to the virtual reality presentation device, and a user realizes virtual reality roaming and interactive operation of the factory through the virtual reality interaction device, wherein the dynamic virtual factory presentation state includes a chemical industry normal production flow state and a production accident state.
In one embodiment, the process control subsystem controls the production simulation process of the process simulation subsystem through a control command, drives the field device in the virtual reality subsystem to act, collects the information of the field device and presents the information to the man-machine interaction interface, wherein the function realized by the control command is realized through a simulation controller or a real controller.
In one embodiment, the real application system comprises a three-dimensional model subsystem, a process simulation subsystem, a virtual reality subsystem and a process control subsystem; wherein the content of the first and second substances,
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and transmitting the three-dimensional model to the virtual reality subsystem;
the process simulation subsystem is used for simulating a chemical production process, generating dynamic data, transmitting the dynamic data to the virtual reality subsystem and the process control subsystem, receiving a control command transmitted by the virtual reality subsystem or the process control subsystem, and adjusting an operating condition in a simulation process according to the control command;
the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming and interactive operation of a user in the dynamic virtual factory through virtual reality equipment, receiving first control information collected by the virtual reality equipment, generating a control command according to the first control information, sending the control command to the process simulation subsystem, and transmitting the first control information to the process control subsystem; and also for adjusting the operating/running conditions in accordance with a second control command transmitted by the process control subsystem.
The process control subsystem is used for displaying the received dynamic data in real time; the control information comprises first control information transmitted by the virtual reality subsystem, second control information generated by simulation of the process control subsystem, and third control information received by real control equipment of the process control subsystem; and the virtual reality subsystem is also used for generating a second control command according to the second control information and/or the third control information and transmitting the second control command to the virtual reality subsystem.
In one embodiment, the practical application system comprises a three-dimensional model subsystem, a process simulation subsystem and a virtual reality subsystem; wherein the content of the first and second substances,
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and transmitting the three-dimensional model to the virtual reality subsystem;
the process simulation subsystem is used for simulating a chemical production process and generating dynamic data, transmitting the dynamic data to the virtual reality subsystem, receiving a control command transmitted by the virtual reality subsystem, and adjusting and simulating operating conditions/running conditions in the chemical production process according to the control command;
the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming and user interaction in the dynamic virtual factory through the virtual reality equipment, receiving first control information acquired by the virtual reality equipment, generating a control command according to the first control information and sending the control command to the process simulation subsystem.
In one embodiment, the communication protocol established between the subsystems includes: OPC protocol, ASCII protocol, and/or TCP/IP protocol, and the communication mode among subsystems includes real-time communication or regular communication.
Compared with the prior art, the invention has the beneficial effects that at least:
the three-dimensional immersive chemical virtual simulation system is composed of a plurality of subsystems, the whole system has openness, flexibility and expansibility, and the subsystems have independence and diversity. Under a specific communication protocol, a user can freely combine subsystems and improve and replace the subsystems on the same computer/server or a plurality of computers/servers according to requirements, so that the system establishment process is more flexible, more efficient and better in expansibility.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a three-dimensional immersive chemical virtual simulation system according to an embodiment;
fig. 2 is a schematic structural diagram of a three-dimensional immersive chemical industry virtual simulation system according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The three-dimensional immersive chemical industry virtual simulation system provided by the embodiment comprises a three-dimensional model subsystem, a flow simulation subsystem, a process control subsystem and a virtual reality subsystem, wherein the subsystems run independently, the subsystems can be simultaneously realized on one electronic device, the subsystems can be respectively realized on a plurality of electronic devices, any subsystem can run independently, other systems are not depended on, and a user can independently operate any subsystem.
In the embodiment, the function implementation modes of the subsystems are diversified, the three-dimensional model subsystem and the process simulation subsystem can be respectively implemented by various software conforming to a specific communication protocol, the process control subsystem can be implemented by a real control system or a simulation control system, and the virtual reality subsystem can also be implemented by different virtual reality equipment.
In the embodiment, the selection of the subsystems can be performed according to the actual application requirements, and the combination of partial subsystems or all subsystems is realized by establishing communication among the subsystems to form the actual application system, so that the final actual application requirements are met. The subsystems can be coupled and decoupled, and the subsystems can be improved and replaced when necessary.
In an embodiment, the three-dimensional model subsystem is used for representing a chemical engineering scene in a real physical world into a three-dimensional model which can be displayed and processed by a computer, and meanwhile, a three-dimensional visualization platform for visualizing the three-dimensional model is provided. The construction method of the three-dimensional model comprises engineering drawing modeling, on-site three-dimensional reconstruction, standard module splicing modeling and the like. The three-dimensional solid reconstruction method can be divided into two types, namely laser scanning and oblique photography. The model obtained by laser scanning is essentially three-dimensional point cloud, only has a three-dimensional geometric model and does not have appearance information, and material information needs to be further added. The three-dimensional model obtained by oblique photography has appearance information, has poor reconstruction effect on dense pipeline parts, has low precision, and needs to be supplemented by a laser scanning method or a drawing method. During concrete modeling, the complexity of a modeling object is analyzed, a single method or a combined method is adopted for modeling, and a vivid three-dimensional model is obtained and then is transmitted to the virtual reality subsystem.
In the embodiment, the process simulation subsystem is provided with process simulation software comprising a plurality of functional units, the multifunctional units are called to carry out mathematical model description on the chemical process, the mathematical model description is operated according to configuration parameters to simulate an actual production process, and dynamic data generated in the simulation process are generated, wherein the chemical process comprises a chemical reaction process, a heat exchange process and a separation process. The simulation software comprises a multifunctional unit which can realize synthesis, oxidation, hydrogenation, cracking, electrolyte solution reaction and the like.
After the composition of the chemical process is determined, the production process characteristics are analyzed, a proper physical property method is selected from a physical property database in the process simulation software, the functional units of the functional unit library are called to build the chemical process to form a mathematical model, and after the parameters of the input and output functional units are set, the process operation and system management are carried out through a resolving and managing system. And further adjusting the mathematical model to complete various tasks of calculation, design, economic evaluation, operation simulation, optimization analysis, fault diagnosis and the like of the chemical process and equipment. On the basis, real-time data exchange is realized with other subsystems through a real-time data communication technology.
In an embodiment, the virtual reality subsystem comprises a virtual factory building module and virtual reality equipment, the virtual factory building module builds a dynamic virtual factory according to a three-dimensional model and dynamic data of a chemical engineering scene and transmits the dynamic virtual factory scene to the virtual reality equipment, a user realizes virtual reality roaming and interactive operation of a factory through the virtual reality equipment, and the presenting state of the dynamic virtual factory comprises a normal production flow state and a production accident state of the chemical engineering. The user can experience normal production flow, production accidents and the like of chemical engineering in an immersive mode through the virtual reality equipment, meanwhile, the user can also carry out interactive operation through the virtual reality equipment, and system state changes in the interactive operation process are updated on the human-computer interaction interface in real time through the real-time communication technology.
In the embodiment, the process control subsystem controls the production simulation process of the process simulation subsystem through a control command, drives the field device in the virtual reality subsystem to act, collects the information of the field device and presents the information to the man-machine interaction interface, wherein the function realized by the control command is realized through a simulation controller or a real controller.
In particular, the process control subsystem may be used to control different types of manufacturing processes, including continuous processes, batch processes, semi-continuous processes, and discrete processes, with process variables including temperature, pressure, flow, level, chemical composition (e.g., product composition, oxygen content), physical parameters (e.g., viscosity, melt index), and the like.
In practical application, a proper controller and a proper control system are selected according to the complexity and the control requirement of the chemical process to meet the safety, the stability and the economy of the system. Common control systems are DCS, PLC, SCADA, etc. and their simulation forms. In addition, the process control scheme has diversity, different control schemes can be adopted for the same controlled process due to different disturbances, and the same control scheme can be suitable for different production processes. On the basis, the process control subsystem can be coupled or decoupled with the process simulation subsystem as required, so that flexible and flexible production control is realized. And the control command of the process control subsystem is transmitted to other subsystems in real time through a real-time data communication technology according to the requirement, so that data exchange is realized.
In one embodiment, the practical application system comprises a three-dimensional model subsystem, a process simulation subsystem, a virtual reality subsystem and a process control subsystem, wherein each subsystem can respectively adopt different network protocols, and finally, data transmission is realized by applying protocol conversion, so that the protocol application range and the function realization means of each subsystem are expanded. The software interface standardization between equipment and application programs of different suppliers is realized through a specific universal protocol, and a process control software component product which is independent of a specific development language and a development environment and can be freely combined and used is provided for users.
In an actual application system, the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical engineering scene and transmitting the three-dimensional model to the virtual reality subsystem;
the process simulation subsystem is used for simulating a chemical production process, generating dynamic data, transmitting the dynamic data to the virtual reality subsystem and the process control subsystem, receiving a control command transmitted by the virtual reality subsystem or the process control subsystem, and adjusting and simulating operating conditions/running conditions in the chemical production process according to the control command;
the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming with the dynamic virtual factory through virtual reality equipment, receiving first control information collected by the virtual reality equipment, generating a control command according to the first control information, sending the control command to the process simulation subsystem, and transmitting the first control information to the process control subsystem; and also for adjusting the operating/running conditions in accordance with a second control command transmitted by the process control subsystem.
The process control subsystem is used for displaying the received dynamic data in real time; the control information comprises first control information transmitted by the virtual reality subsystem, second control information generated by simulation of the process control subsystem, and third control information received by real control equipment of the process control subsystem; and the virtual reality subsystem is also used for generating a second control command according to the second control information and/or the third control information and transmitting the second control command to the virtual reality subsystem.
In the practical application system, the three-dimensional model subsystem and the virtual reality subsystem are integrated in one electronic device, so that the virtual reality subsystem can call the three-dimensional model conveniently, and the process control subsystem and the process simulation subsystem are respectively arranged on the two electronic devices; or the three-dimensional model subsystem and the virtual reality subsystem are respectively arranged on two electronic devices, the process control subsystem and the process simulation subsystem are integrated on one electronic device, and a new system, such as a process model subsystem, is formed through coupling. Wherein the electronic device comprises a computer or a server.
It should be noted that the first control information refers to control information operated by a user in an interactive process through a virtual reality device, the second control information refers to control information generated by a process control subsystem through an analog logic, and the third control information refers to control information input by the user through a real control device, and these control information can correspondingly adjust the process operation conditions/operation conditions.
In one embodiment, the practical application system comprises a three-dimensional model subsystem, a process simulation subsystem and a virtual reality subsystem; the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical engineering scene and transmitting the three-dimensional model to the virtual reality subsystem; the process simulation subsystem is used for simulating a chemical production process and generating dynamic data, transmitting the dynamic data to the virtual reality subsystem, receiving a control command transmitted by the virtual reality subsystem, and adjusting process operation conditions/running conditions in the simulated chemical production process according to the control command; the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming with the dynamic virtual factory through virtual reality equipment, receiving first control information collected by the virtual reality equipment, generating a control command according to the first control information and sending the control command to the process simulation subsystem.
It should be noted that the data transmission form between the subsystems includes not only real-time data communication but also non-real-time data communication. Real-time data transmission requires that both communication parties are in an online state, and the transmission process is completed within a certain time to ensure the real-time performance of data. The non-real-time data communication can temporarily place the data in a data server for transferring, or export the data to an external storage device, and other computers/servers acquire the data from the external storage device. The user can select a proper data communication mode according to different requirements.
In the embodiment, the subsystem function implementation means has diversity. The three-dimensional model subsystem can adopt a single modeling method or a plurality of modeling methods to be flexibly combined to realize high-efficiency modeling. The process simulation subsystem can be established by adopting different process simulation software, flexibly adjusts a process simulation model according to the requirements of system design and upgrading, and expands the application range of the model. The process control subsystem can simultaneously establish a simulation control system for generating simulation control logic and a real control system containing a real controller, and can carry out free switching under different requirements. In the virtual reality subsystem, according to the difference of virtual reality system interaction and entering degree, divide into: desktop formula virtual reality system, immersive virtual reality system, enhancement formula virtual reality system and distributing type virtual reality system. Different types of virtual reality systems can be replaced as necessary, and the same type of virtual reality system can employ different input devices, such as: the keyboard and mouse, the operating handle, the motion capture gloves and the like are convenient for a user to flexibly operate.
In the embodiment, data intercommunication and data synchronization can be realized as long as a specific communication protocol is satisfied between subsystems, and the optimal scheme under a specific condition is considered in the selection of the communication procedure, and comprises the following steps: OPC protocol, ASCII protocol, TCP/IP protocol, etc. The whole system communication can adopt a single communication protocol or a plurality of communication protocols, and data transmission among a plurality of protocols is realized through protocol conversion.
Two specific examples are described in detail below:
example 1
As shown in fig. 1, the embodiment provides that the actual application system is composed of a three-dimensional model subsystem, a process model subsystem and a virtual reality subsystem on three computers. The process model subsystem is formed by coupling a simulation control system and a dynamic mechanism model, and provides reliable dynamic data for the virtual reality subsystem. The dynamic mechanism model is from the process simulation subsystem, and the simulation control system is from the process control subsystem.
A three-dimensional model subsystem is built on the computer 1. And the three-dimensional model subsystem adds basic geometric elements including lines, circles, rectangles and the like by using three-dimensional drawing software 3DMax according to the engineering drawing, and constructs an equipment model through translation, rotation, stretching, splicing, deduction and Boolean operation. And after the model is built, layout optimization is carried out, and information such as equipment names, spatial positions, bit numbers and the like is added to the equipment model. The model is further divided into a static part and a dynamic part, wherein the static part is a part which can not be directly operated by ready-made operators such as pipelines, pressure vessels and the like in a factory, and the dynamic part is a part which can be directly operated by field workers such as valves, switches, field instruments and the like. After the three-dimensional modeling is completed, the FBX file is exported to a virtual reality subsystem on the computer 2.
The process model subsystem is coupled with a simulation control system and a dynamic mechanism model on a computer 3, a server and a client of OPC communication are configured through Cogent DataHub software after the process model subsystem is operated, and the OPC UA communication technology is adopted to establish contact for equipment in a virtual factory, provide dynamic data and realize connection among different network protocols of each subsystem. The dynamic mechanism model for the process extraction description process is represented as:
f () represents different types of function types, and a linear function, a nonlinear function, and the like are selected according to an actual flow. y is an output variable of the system,xu represents an input variable of the system, which is a state variable inside the system. The state variables of the system refer to a variable group with the minimum number of variables capable of completely describing the time domain behavior of the dynamic system. And further establishing a process model in Aspen Plus software according to the mechanism model, adding a control module, and controlling corresponding key state variables by using the operation variables, so that the process is safely and stably operated, and transmitting the result to a virtual reality subsystem on the computer 2 in real time through an OPC UA communication technology.
The virtual reality subsystem on the computer 2 receives dynamic data from the plant three-dimensional model and the process model subsystems of the three-dimensional model subsystem through non-real-time data communication and OPC UA communication technologies, respectively. And for the three-dimensional factory model, performing texture mapping operation of scene rendering and multi-texture fusion to obtain the virtual factory with high reduction degree. The human control module, the collision detection module and the human-computer interaction module are added to control the virtual human to complete interaction functions of forward walking, backward walking, leftward walking, rightward walking, steering, standing in place, jumping, running up stairs, valve operation, equipment operation and the like in the virtual factory. The interactive information comprises equipment information and dynamic data obtained by the process simulation model, and is presented on the human-computer interaction interface by using a real-time communication technology. And a small map and a search function are further added, so that the user can quickly know the virtual factory and quickly find the target equipment.
And finally, presenting the dynamic virtual factory on an image output device by adopting a multi-channel transmission technology, providing dynamic data by using a real-time data communication technology, and providing an immersive virtual environment for personnel training. The trainee can move the person and open or close the valve through the input device handle.
The operation method of the embodiment is as follows:
s1, establishing a three-dimensional factory model in the three-dimensional model subsystem according to the engineering drawing, and performing layout optimization to obtain a three-dimensional factory model with high reduction degree and importing the three-dimensional factory model into the virtual reality subsystem.
S2, establishing a process model subsystem, and providing reliable dynamic data for the virtual reality subsystem through OPC UA communication technology.
S3 the virtual reality subsystem carries out scene rendering and material mapping to the three-dimensional factory model from the three-dimensional model subsystem, adds a function module to realize the operation of the virtual human in the virtual factory and the presentation of the interactive information, and provides the functions of minimap and search.
The S4 virtual factory is displayed on the image output device through a multi-channel transmission technology, the real-time communication technology provides dynamic data in real time, and trainees finish training operation through the input device.
Example 2
As shown in fig. 2, the practical application system provided by the embodiment is composed of a three-dimensional model subsystem, a process simulation subsystem, a process control subsystem, and a virtual reality subsystem. Wherein the three-dimensional model subsystem and the virtual reality subsystem are completed on the computer 3 in fig. 2. Meanwhile, a simulation control system and a dynamic mechanism model in the process model subsystem are decoupled to obtain a process simulation subsystem and a process control subsystem, so that production control is more flexible.
The three-dimensional model subsystem on the computer 3 is different from the engineering drawing modeling method in the embodiment 1, and a method combining an oblique photography technology and a laser scanning technology is adopted to build a three-dimensional model for a field factory area. A plurality of sensors are carried on the same flying platform, and field image acquisition is carried out from different angles of verticality, foresight, backsight, left-view and right-view. And carrying out data processing on the collected vector line data and the collected tilt model data in the region, and comprehensively utilizing a three-dimensional space physical segmentation technology and a tilt model technology to realize automatic extraction and automatic physical segmentation of the entity model. And on the basis, reconstructing mapping between the model and the texture, generating a texture picture, and then carrying out texture mapping. For the dense part of the pipeline and the equipment, the details of the pipeline and the equipment are perfected by utilizing a laser scanning technology to obtain a high-reduction factory three-dimensional model. And collecting point clouds by using a scanner, and carrying out point cloud splicing and denoising. And modeling the regular object by adopting a characteristic line extraction method, modeling the irregular object by adopting a triangular grid method, optimizing and reducing the surface after the modeling is finished, and further performing texture mapping and mapping. And finally, importing the obtained three-dimensional model into a virtual reality subsystem.
The process simulation subsystem established in the computer 1 simulates a chemical process flow by combining different chemical unit operations, and provides dynamic data for the virtual reality subsystem through an OPC UA technology. The subsystem selects ChemCAD software to carry out operations such as tower design, heat exchanger design, flow safety design and pipe network analysis and calculation, and realizes safe and efficient flow simulation. And after running, transmitting dynamic data to the virtual reality subsystem through an OPC interface of the software.
The process control subsystem on the computer 2 simultaneously comprises a simulation control system and a real control system with the same control effect, and the normal operation is that one control system is effective. And the user switches the control system according to actual conditions and requirements and reestablishes data communication through the communication interface. And (3) analyzing variables such as temperature, pressure, flow, liquid level and the like in the process to determine a control variable and a controlled variable, making a control scheme after defining control logic, and transmitting a control signal by means of an OPC UA (optical proximity correction) technology after building a control system to realize control on a flow simulation subsystem. And further establishing real-time data communication between the virtual control subsystem and the process control subsystem, and simulating the flow operation of an internal operator in the production process.
The virtual reality subsystem completes the establishment of a virtual factory on the basis of the three-dimensional factory model, the functional module is added and then displayed on the image output equipment, and the user performs flow operation through the input equipment. In the example, the motion capture gloves are used as input equipment, so that the flow operations such as opening and closing valves are closer to the actual production process.
The operation method of the embodiment is as follows:
s1, a three-dimensional factory model is built in the three-dimensional model subsystem by adopting a method of combining oblique photography and laser scanning, and the three-dimensional factory model is guided into the virtual reality subsystem on the same computer after texture mapping.
S2 sets up a flow simulation subsystem to provide dynamic data for the virtual plant through OPC UA communication technology.
The S3 process control subsystem comprises a simulation control system and a real control system at the same time, and a user switches the control systems according to requirements. The control signal is transmitted to the process simulation subsystem through OPC UA technology.
And S4 the virtual reality subsystem completes the establishment of the virtual factory.
S5 the virtual factory is displayed on the image output device by multi-channel transmission technology, and the trainee finishes the flow operation by capturing gloves through the input device.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. A three-dimensional immersive chemical virtual simulation system is characterized by comprising a three-dimensional model subsystem, a process simulation subsystem, a process control subsystem and a virtual reality subsystem;
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and providing a three-dimensional visual platform;
the flow simulation subsystem is used for simulating a chemical production process according to the data and the model of the chemical process;
the virtual reality subsystem is used for establishing a virtual factory and providing the virtual factory for a user to realize virtual reality roaming and interactive operation of the factory;
the process control subsystem is used for controlling the flow simulation subsystem and the virtual reality subsystem to work;
the subsystems run independently from each other and are established on one or more electronic devices, each subsystem can independently update software while performing corresponding hardware configuration, and communication is established between 1 subsystem or at least 2 subsystems according to actual application requirements to form an actual application system.
2. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein in the three-dimensional model subsystem, a three-dimensional visualization platform is provided for visualizing the three-dimensional model;
the construction method of the three-dimensional model comprises engineering drawing modeling, on-site three-dimensional reconstruction and standard module splicing modeling.
3. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein the process simulation subsystem is provided with process simulation software comprising a plurality of functional units, calls the multifunctional unit to perform mathematical model description on the chemical process, and runs the mathematical model description according to configuration parameters to simulate an actual production process to obtain dynamic data, wherein the chemical process comprises a chemical reaction process, a heat exchange process and a separation process.
4. The three-dimensional immersive chemical industry virtual simulation system of claim 3, wherein the simulation software is further capable of implementing chemical process design, economic evaluation, operational simulation, optimization analysis, and fault diagnosis tasks.
5. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein the virtual reality subsystem comprises a virtual factory building module and a virtual reality device, the virtual factory building module builds a dynamic virtual factory according to a three-dimensional model and dynamic data of a chemical industry scene and transmits the dynamic virtual factory scene to the virtual reality presentation device, and a user realizes factory virtual reality roaming and interactive operation through the virtual reality interaction device, wherein the dynamic virtual factory presentation state comprises a chemical industry normal production flow state and a chemical industry accident state.
6. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein the process control subsystem controls a production simulation process of the process simulation subsystem through a control command and drives a field device in the virtual reality subsystem to act, and information of the field device is collected and presented on the human-computer interaction interface, wherein a function realized by the control command is realized through a simulation controller or a real controller.
7. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein the real application system comprises a three-dimensional model subsystem, a process simulation subsystem, a virtual reality subsystem, and a process control subsystem; wherein the content of the first and second substances,
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and transmitting the three-dimensional model to the virtual reality subsystem;
the process simulation subsystem is used for simulating a chemical production process, generating dynamic data, transmitting the dynamic data to the virtual reality subsystem and the process control subsystem, receiving a control command transmitted by the virtual reality subsystem or the process control subsystem, and adjusting an operating condition in a simulation process according to the control command;
the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming and interactive operation of a user in the dynamic virtual factory through virtual reality equipment, receiving first control information collected by the virtual reality equipment, generating a control command according to the first control information, sending the control command to the process simulation subsystem, and transmitting the first control information to the process control subsystem; and also for adjusting the operating/running conditions in accordance with a second control command transmitted by the process control subsystem.
The process control subsystem is used for displaying the received dynamic data in real time; the control information comprises first control information transmitted by the virtual reality subsystem, second control information generated by simulation of the process control subsystem, and third control information received by real control equipment of the process control subsystem; and the virtual reality subsystem is also used for generating a second control command according to the second control information and/or the third control information and transmitting the second control command to the virtual reality subsystem.
8. The three-dimensional immersive chemical industry virtual simulation system of claim 1, wherein the real application system comprises a three-dimensional model subsystem, a process simulation subsystem, a virtual reality subsystem; wherein the content of the first and second substances,
the three-dimensional model subsystem is used for constructing a three-dimensional model of a chemical scene and transmitting the three-dimensional model to the virtual reality subsystem;
the process simulation subsystem is used for simulating a chemical production process and generating dynamic data, transmitting the dynamic data to the virtual reality subsystem, receiving a control command transmitted by the virtual reality subsystem, and adjusting and simulating operating conditions/running conditions in the chemical production process according to the control command;
the virtual reality subsystem is used for constructing a dynamic virtual factory according to the received dynamic data and the three-dimensional model, realizing virtual reality roaming and user interaction in the dynamic virtual factory through the virtual reality equipment, receiving first control information acquired by the virtual reality equipment, generating a control command according to the first control information and sending the control command to the process simulation subsystem.
9. The three-dimensional immersive chemical industry virtual simulation system of any of claims 1-8, wherein the communication protocols established between the subsystems include: OPC protocol, ASCII protocol, and/or TCP/IP protocol, and the communication mode among subsystems includes real-time communication or regular communication.
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