CN114063576A - Digital twinning system and method applied to industrial production line - Google Patents
Digital twinning system and method applied to industrial production line Download PDFInfo
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Abstract
The invention discloses a digital twinning system and a method applied to an industrial production line, wherein the digital twinning system comprises the following components: the data acquisition device is used for acquiring physical production line state information data in real time through production equipment and transmitting the physical production line state information data to the digital twin processing device and/or the visualization device through an industrial control network; the digital twin processing device is used for processing and analyzing the information data acquired by the data acquisition device and transmitting the information data to the visualization device; the visualization device is used for analyzing the information data transmitted by the data acquisition device and/or the digital twin processing device through the three-dimensional visualization engine, generating a virtual production line model consistent with a physical production line and displaying the virtual production line model. The invention can realize twin mirror images of a virtual production line and a physical production line, and can perform multi-view visual display, natural interaction and state monitoring on line in real time and off line in non-real time.
Description
Technical Field
The invention belongs to the technical field of intelligent production, and particularly relates to a digital twinning system and a digital twinning method applied to an industrial production line.
Background
The intelligent factory is the necessary way to realize intelligent manufacturing, and the intelligent production line is the basis to realize the intelligent factory. However, the physical space and the information space of the current production line are independent from each other, data transmission has hysteresis, real-time interaction and fusion cannot be achieved in virtual space and real space, and the intelligent level is not high. In view of the current situation, Digital Twin (DT) attracts attention as a technical means for realizing CPS (cyber-physical system) fusion.
The digital twin refers to copying a physical object in a virtual environment in a digital mode, synchronizing products, manufacturing processes and even the whole factory in the virtual environment through behavior data of real objects in a real environment, and the digital twin is a technical means for implementing and developing an information physical network (CPS) and combines the intelligence of the manufacturing process of the products and the intelligence of the products. The production processing and running states of the entity product can be accurately reflected in the virtual space in real time, the bidirectional flow of information is realized, and the product manufacturing is accurately controlled by using the feedback mechanism of the information. And the digital twin simulation is linked with a database to form an analysis and decision result and guide actual production. The enterprise utilizes the concept of digital twin, can manage the production line in a virtual environment after digital modeling, and can reduce the personnel investment, improve the efficiency and save the cost through continuous iteration and improvement, so the digital twin can bring huge value to the enterprise, and the technology is very necessary to be applied to industrial production.
In recent years, the digital twin has rapidly developed in both theoretical and application levels, and has attracted wide attention of both domestic and foreign scholars and enterprises. However, through searching related patents and papers, the realization of the current digital twin system has shortcomings in real-time visualization, natural interaction and multi-platform environment support:
1. most of digital twin scene construction can not be separated from technical personnel, most of construction work is compiled through codes, visual editing functions are not provided, such as conventional movement of a model, creation of a client twin scene, multiplexing of the model and the like, and remote access and multi-platform deployment are not supported. Some cannot provide free interaction modes, such as roaming in twin scenes, detailed magnification observation and the like.
2. Some three-dimensional simulation models cannot track and reflect the state of the physical model in real time.
Disclosure of Invention
In order to solve the technical problems, the invention provides a digital twinning system and a digital twinning method applied to an industrial production line.
In order to achieve the purpose, the technical scheme of the invention is as follows:
in one aspect, the present invention discloses a digital twinning system applied to an industrial production line, comprising:
the data acquisition devices are respectively in communication connection with the production equipment and are used for acquiring the state information data of the physical production line in real time through the production equipment and transmitting the state information data to the digital twin processing device and/or the visualization device in real time through the industrial control network;
the digital twin processing device is respectively in communication connection with the data acquisition device and the visualization device, and is used for processing and analyzing the information data acquired by the data acquisition device and transmitting the information data to the visualization device;
and the visualization device is respectively in communication connection with the data acquisition device and the digital twin processing device and is used for analyzing the information data transmitted by the data acquisition device and/or the digital twin processing device through the three-dimensional visualization engine, generating a virtual production line model consistent with the physical production line and displaying the virtual production line model.
On the basis of the technical scheme, the following improvements can be made:
preferably, the digital twinning system further comprises:
and the data storage device is in communication connection with the data acquisition device and is used for realizing data caching or data persistence.
Preferably, the digital twin processing apparatus includes:
the data conversion module is used for converting the physical production line state information data acquired by the production equipment in real time into data which can be identified and used by the visualization device;
and the data analysis module is used for analyzing one or more information data in the production number, the fault rate and the production beat information of any time period of the physical production line.
Preferably, the visualization device performs visual display on various analysis result data generated by the data analysis module.
As a preferred scheme, the production equipment comprises: one or more of a Programmable Logic Controller (PLC), a sensor, and a remote terminal unit.
Preferably, the physical production line status information data includes: one or more equipment information data in a machine tool of a physical production line, an industrial robot, a workpiece, a material, a conveying device, logistics equipment and storage equipment.
Preferably, any one of the device information data includes: one or more of position, pose, speed, and status information.
Preferably, the visualization device is a U3D client.
On the other hand, the invention discloses a digital twinning method applied to an industrial production line, which specifically comprises the following steps:
s1: the production equipment is deployed, and the collection or writing of single or multiple data point positions is realized;
s2: the data acquisition device inquires all data point positions in a real-time data wheel in a timer mode, and simultaneously, performs read-write operation on the data point positions in a webapi interface mode;
s3: the change of the data point location is used as a high-level Cache in a Cache memory mode, and corresponding data is stored in a local Influx database to be used as a local Cache to realize data persistence;
s4: the digital twin processing device and the data acquisition device carry out mutual transmission of message queues in an Mqtt mode;
s5: the data acquisition device sends information data acquired by the production equipment to the visualization device regularly through a fixed json format through the webscolet, and the visualization device realizes the virtual-real synchronization effect through data analysis of the json format.
Preferably, the method further comprises the following steps:
the visualization device calls an interface provided in the digital twin processing device and/or the data acquisition device in a webapi interface mode to acquire corresponding data in any time period;
converting the persistent data in the time period from the Influx database into json format and returning the json format to the visualization device;
and the visualization device analyzes the data and displays the data to realize historical playback of the data.
The invention relates to a digital twin system and a method applied to an industrial production line, which are characterized in that real-time state information data of a physical production line are acquired by various production equipment, and a three-dimensional visualization engine is driven to render and generate a virtual production line model consistent with the physical production line based on the information data, so that twin mirror images of the virtual production line and the physical production line are realized, multi-view visual display, natural interaction and state monitoring can be carried out on line in real time and off-line in non-real time, production line information such as the number of production lines, the number of faults, the fault rate, the production beat and the like can be visually displayed, and the whole system supports various network environments such as local, remote, local area network, wide area network, Internet and the like and computer and hand multi-platform deployment.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a structural diagram of a digital twinning system according to an embodiment of the present invention.
Fig. 2 is an architecture diagram of a digital twinning system provided by an embodiment of the present invention.
Wherein: 1-a data acquisition device, 2-a digital twin processing device, 3-a visualization device and 4-a data storage device.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to achieve the object of the present invention, in some embodiments of a digital twinning system and method applied to an industrial production line, as shown in fig. 1, the digital twinning system includes:
the data acquisition device 1 is respectively in communication connection with the production equipment, and is used for acquiring the state information data of the physical production line in real time through the production equipment and transmitting the state information data to the digital twin processing device 2 and/or the visualization device 3 in real time through the industrial control network;
the digital twin processing device 2 is respectively in communication connection with the data acquisition device 1 and the visualization device 3, and is used for processing and analyzing the information data acquired by the data acquisition device 1 and transmitting the information data to the visualization device 3;
and the visualization device 3 is in communication connection with the data acquisition device 1 and the digital twin processing device 2 respectively, and is used for analyzing the information data transmitted by the data acquisition device 1 and/or the digital twin processing device 2 through a three-dimensional visualization engine, generating a virtual production line model consistent with a physical production line, and displaying the virtual production line model.
Wherein: the industrial control network transmits the real-time data to the digital twin processing device 2 and/or the visualization device 3, and the real-time transmission supports various transmission protocols such as LAN, WIFI and the like.
The visualization device 3 is adaptive to multi-platform deployment of a personal computer, handheld intelligent equipment and the like, and the visualization device 3 renders a three-dimensional lightweight model of a virtual production line under the drive of real-time acquired physical production line information data through a three-dimensional visualization engine, so that a virtual production line model consistent with the physical production line is generated.
In order to further optimize the implementation effect of the invention, in other embodiments, the rest features are the same, except that the digital twinning system further comprises:
and the data storage device 4 is in communication connection with the data acquisition device 1 and is used for realizing data caching or data persistence.
In order to further optimize the effect of the present invention, in other embodiments, the remaining features are the same, except that the digital twin processing device 2 includes:
the data conversion module is used for converting the physical production line state information data acquired by the production equipment in real time into data which can be identified and used by the visualization device 3;
and the data analysis module is used for analyzing one or more information data in the production number, the fault rate and the production beat information of any time period of the physical production line.
Further, the visualization device 3 performs visualization display on various analysis result data generated by the data analysis module.
In order to further optimize the implementation of the invention, in other embodiments, the remaining features are the same, except that the production plant comprises: one or more of a Programmable Logic Controller (PLC), a sensor, and a remote terminal unit.
In order to further optimize the implementation effect of the invention, in other embodiments, the rest of the feature technologies are the same, except that the physical production line state information data comprises: one or more equipment information data in a machine tool of a physical production line, an industrial robot, a workpiece, a material, a conveying device, logistics equipment and storage equipment.
Further, any one of the above device information data includes: one or more of position, pose, speed, and status information.
In order to further optimize the implementation of the present invention, in other embodiments, the remaining features are the same, except that the visualization device 3 is a U3D client.
For a better understanding of the present invention, as shown in fig. 2, the following describes an architecture method of a digital twinning system applied to an industrial production line:
step 1: and (4) user role system authority, project framework user login role authority is established, and administrator and tourist roles are defaulted.
Step 2: and (3) building a bottom framework of the digital twin system, and configuring a model library module, scene station equipment level logic and data node logic.
And step 3: the method comprises the steps of application function development-digital twin space building, development and creation of a digital twin scene function, introduction and placement of a model module and a scene free roaming function by integrating the Unity3D function.
And 4, step 4: and (3) application function development-virtual-real synchronization, data binding operation on the model in real time, and real-time data driving butt joint verification of the data acquisition device 1.
The client development steps are as follows:
1) processing the model: converting the industrial models in various formats into FBX format models, adding spatial position information, modifying or adding new materials and maps.
2) Creating a model library: and uploading the model to a server to complete the creation of the model library.
3) Adding the device attribute:
classifying the model according to the function of the physical entity corresponding to the model in the production scene, for example: the system comprises an XX station, an XX plant area, an XX clamp and an XX robot;
according to the production characteristics of the physical entity corresponding to the model in the production scene, adding attributes to the model, for example, adding attribute information such as welding points, beats, rotation axis values and the like to the XX robot.
4) Build a Unity3D scene:
adding an operation menu interface;
and compiling the expression code of the model according to the functional classification of the model.
5) Developing a user role authority function:
according to the user identity information, displaying/hiding related function interfaces, such as: if the user role is 'administrator', the operation interface displays the 'model editing' and 'permission setting' functional modules, and if the user role is 'normal user', the 'model editing' and 'permission setting' functional modules are hidden.
6) Expression model:
loading the model from the server;
according to the model information, compiling a well-compiled expression code recognition model and preparing for expression;
iot data connection;
and the code script identifies Iot data and drives a model to respond to data expression.
After the development of the digital twin system is completed, the following functions can be realized:
firstly, building an application function-digital twin space, developing and creating a digital twin scene function by integrating the Unity3D function, importing and placing a model, editing the position and the direction of the model, reusing the model in a plurality of scenes and freely roaming the model in the scenes.
And secondly, applying a function-visual angle management to record the current visual angle coordinate and the camera direction in the scene, and switching the camera to record the visual angle coordinate and the direction.
And thirdly, applying a function-equipment information window, and binding an information window at the center point of the equipment model, obtaining the fixed information of the name and the number corresponding to the equipment by the window and the dynamic and static data obtained from the production equipment (such as PLC).
And fourthly, applying a function-equipment list, defining all equipment which acquires data from production equipment (such as a PLC) and binds a data source as the equipment, displaying the three-dimensional simulation models of all the equipment in a list form on an equipment list interface, providing detail amplification viewing and viewing real-time information of the equipment.
And fifthly, applying function-fault prompting, prompting monitoring personnel in a red dot plus fault number mode according to real-time fault data acquired from production equipment (such as a PLC), displaying information such as equipment names, fault level icons, fault descriptions and the like corresponding to faults in a calling list, automatically switching visual angles to the equipment when the faults are checked, and calling a mask plug-in to highlight the equipment.
And sixthly, the client can access the item under the name of the used account through the public network connection server to enter a twin scene for operation.
The visualization device 3 of the system can realize multi-platform deployment and can issue clients suitable for Windows and Mac systems.
On the other hand, the embodiment of the invention also discloses a digital twinning method applied to an industrial production line, which specifically comprises the following steps:
s1: the production equipment is deployed, and the collection or writing of single or multiple data point positions is realized;
s2: the data acquisition device 1 inquires all data point positions in a real-time data wheel in a timer mode, and simultaneously, performs read-write operation on the data point positions in a webapi interface mode;
s3: the change of the data point location is used as a high-level Cache in a Cache memory mode, and corresponding data is stored in a local Influx database to be used as a local Cache to realize data persistence;
s4: the digital twin processing device 2 and the data acquisition device 1 perform mutual transmission of message queues in an Mqtt mode;
s5: the data acquisition device 1 sends information data acquired by the production equipment to the visualization device 3 regularly through a json format fixed by the webscolet, and the visualization device 3 realizes the effect of virtual-real synchronization through data analysis of the json format.
In order to further optimize the implementation effect of the invention, in other embodiments, the rest of the feature technologies are the same, except that the digital twinning method further comprises the following steps:
the visualization device 3 calls an interface provided in the digital twin processing device 2 and/or the data acquisition device 1 in a webapi interface mode to acquire corresponding data in any time period, wherein the corresponding data can include but is not limited to equipment name, start time, end time, process parameters, station information, point location information and the like;
converting the persistent data in the time period from the infiux database into json format and returning the json format to the visualization device 3;
and the visualization device 3 analyzes and displays the data to realize historical playback of the data.
By adopting the above content, the digital twin method disclosed by the invention has a history playback function, and effectively solves the problem that the conventional twin system cannot trace back past history operation states.
The invention relates to a digital twin system and a method applied to an industrial production line, which are characterized in that real-time state information data of a physical production line are acquired by various production equipment, and a three-dimensional visualization engine is driven to render and generate a virtual production line model consistent with the physical production line based on the information data, so that twin mirror images of the virtual production line and the physical production line are realized, multi-view visual display, natural interaction and state monitoring can be carried out on line in real time and off-line in non-real time, production line information such as the number of production lines, the number of faults, the fault rate, the production beat and the like can be visually displayed, and the whole system supports various network environments such as local, remote, local area network, wide area network, Internet and the like and computer and hand multi-platform deployment.
The digital twinning system and method applied to the industrial production line can effectively promote industrial production and realize intellectualization of the industrial production.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (10)
1. A digital twinning system for use in an industrial production line, comprising:
the data acquisition devices are respectively in communication connection with the production equipment and are used for acquiring the state information data of the physical production line in real time through the production equipment and transmitting the state information data to the digital twin processing device and/or the visualization device in real time through the industrial control network;
the digital twin processing device is respectively in communication connection with the data acquisition device and the visualization device, and is used for processing and analyzing the information data acquired by the data acquisition device and transmitting the information data to the visualization device;
and the visualization device is respectively in communication connection with the data acquisition device and the digital twin processing device and is used for analyzing the information data transmitted by the data acquisition device and/or the digital twin processing device through a three-dimensional visualization engine, generating a virtual production line model consistent with a physical production line and displaying the virtual production line model.
2. The digital twinning system of claim 1, further comprising:
and the data storage device is in communication connection with the data acquisition device and is used for realizing data caching or data persistence.
3. The digital twinning system of claim 1, wherein the digital twinning processing device comprises:
the data conversion module is used for converting the physical production line state information data acquired by the production equipment in real time into data which can be identified and used by the visualization device;
and the data analysis module is used for analyzing one or more information data in the production number, the fault rate and the production beat information of any time period of the physical production line.
4. The digital twin system according to claim 3, wherein the visualization device visually displays various analysis result data generated by the data analysis module.
5. The digital twinning system of any of claims 1-4, wherein the production facility includes: one or more of a Programmable Logic Controller (PLC), a sensor, and a remote terminal unit.
6. The digital twinning system of any of claims 1-4, wherein the physical production line status information data includes: one or more equipment information data in a machine tool of a physical production line, an industrial robot, a workpiece, a material, a conveying device, logistics equipment and storage equipment.
7. The digital twinning system of claim 6, wherein any of the above device information data includes: one or more of position, pose, speed, and status information.
8. The digital twinning system of any of claims 1-4, wherein the visualization device is a U3D client.
9. A digital twinning method applied to an industrial production line is characterized by comprising the following steps:
s1: the production equipment is deployed, and the collection or writing of single or multiple data point positions is realized;
s2: the data acquisition device inquires all data point positions in a real-time data wheel in a timer mode, and simultaneously, performs read-write operation on the data point positions in a webapi interface mode;
s3: the change of the data point location is used as a high-level Cache in a Cache memory mode, and corresponding data is stored in a local Influx database to be used as a local Cache to realize data persistence;
s4: the digital twin processing device and the data acquisition device carry out mutual transmission of message queues in an Mqtt mode;
s5: the data acquisition device sends information data acquired by the production equipment to the visualization device regularly through a fixed json format through the webscolet, and the visualization device realizes the virtual-real synchronization effect through data analysis of the json format.
10. The digital twinning method of claim 9, further comprising:
the visualization device calls an interface provided in the digital twin processing device and/or the data acquisition device in a webapi interface mode to acquire corresponding data (the corresponding data comprises a device name, a start time, an end time and the like) in any time period;
converting the persistent data in the time period from the Influx database into json format and returning the json format to the visualization device;
and the visualization device analyzes the data and displays the data to realize historical playback of the data.
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| CN111857065A (en) * | 2020-06-08 | 2020-10-30 | 北京邮电大学 | Intelligent production system and method based on edge calculation and digital twinning |
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