WO2020199503A1

WO2020199503A1 - Digital twin platform-based factory management system and method therefor

Info

Publication number: WO2020199503A1
Application number: PCT/CN2019/105007
Authority: WO
Inventors: 陈锦忠; 郑魁敬; 周俊雄; 周俊杰; 杜义贤
Original assignee: 广东利元亨智能装备股份有限公司
Priority date: 2019-03-30
Filing date: 2019-09-10
Publication date: 2020-10-08
Also published as: CN110333698A

Abstract

A digital twin platform-based factory management system and a method therefor, which are used for the management of proportional 3D models such as factories: comprising a factory layer, a workshop layer, a device layer and a control layer, which are used to, according to a signal transmitted in an actual workshop, control a digital twin in the factory layer, workshop layer and device layer to generate a corresponding action, and select and view any digital twin in the factory layer, workshop layer and device layer as well as parameter information thereof. By using the present system and method therefor, the entire factory campus layout may be modeled on a digital twin platform, so that a customer is guided using a first-person viewing angle to understand the entire workshop layout, and view the operating states of devices in the factory.

Description

Factory management system and method based on digital twin platform

Technical field

The invention relates to the technical field of factory management systems, in particular to a factory management system and a method based on a digital twin platform.

Background technique

The digital twin development platform uses data such as digital models, sensor updates, and operating signals to complete the mapping of real automation equipment in a virtual space and create virtual devices synchronized with real equipment for the full life cycle management of equipment visualization.

The digital twin development platform is a digital equipment that develops and runs synchronously with the production line automation equipment. It has the following characteristics: 1. Synchronization of actions, customers can watch the entire product process and the actions of various institutions in the software; 2. Information synchronization, production The material information of the equipment and the IO signal of the PLC are synchronously fed back in the software. The current processing material information and status can be displayed synchronously; 3. Operation and maintenance are synchronized, and the production status of the remote equipment can be viewed in real time; when an abnormal alarm occurs, the 3D model can be displayed Quickly locate the location and alarm information of abnormal parts in the middle.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The purpose of the present invention is to provide a factory management system and method based on a digital twin platform. The technical solution provided by the present invention can model the entire factory park layout on the digital twin platform, and guide customers to understand the entire Distribution of workshops, and check the operating status of equipment in the factory.

In order to achieve the above-mentioned purpose of the invention, on the one hand, the present invention provides a factory management system based on a digital twin platform for the management of a 3D model of a factory; including

The factory layer includes the digital twin of the factory building in the 3D model and the parameter information of the digital twin of the factory building;

Workshop level, including the workshop equipment digital twin in the workshop and the parameter information of the workshop equipment digital twin;

The equipment layer includes the production equipment digital twin and the parameter information of the production equipment digital twin; and

The control layer is used to control the digital twins in the factory layer, the workshop layer and the equipment layer to produce corresponding actions according to the signals transmitted in the actual workshop, and select to view any digital twins in the factory layer, the workshop layer and the equipment layer And its parameter information.

Preferably, the factory building digital twins on the factory floor include: architectural digital twins, channel digital twins, and workshop digital twins;

The workshop equipment digital twins at the workshop level include: AGV digital twins and logistics drum line digital twins;

The production equipment digital twin at the equipment layer includes: a storage digital twin and an automation equipment digital twin.

Preferably, the control of the control layer at the factory layer includes moving to different positions on the digital twin of the factory building through manual or automatic switching control, and roaming to display the simulated scene and parameter information of the moving position from a first-person perspective.

Preferably, the control of the control layer at the workshop level includes acquiring parameter information of the workshop equipment in the actual workshop through MES signals, and synchronously sending it to the mapping model in the digital twin of the workshop equipment.

Preferably, it also includes a PLC control platform; the control of the control layer at the equipment layer includes obtaining parameter information of the production equipment in the actual workshop through the PLC/WCS signal of the PLC control platform, and synchronously sending it to the production equipment digital The mapping model in the twin.

Based on the above-mentioned factory management system, the present invention also provides a factory management method, including a creation step and a management step:

The creation steps include:

S100. Create a proportional 3D model according to the actual factory layout;

S200. Assign physical attributes to the digital twins of factory buildings, digital twins of workshop equipment and digital twins of production equipment in the 3D model;

S300. Obtain the parameter information of the workshop equipment and production equipment in the actual workshop, and send them synchronously to the digital twin of the workshop equipment and the mapping model in the digital twin of the production equipment;

S400, workshop equipment digital twin and production equipment digital twin produce corresponding actions according to the parameter information transmitted in the actual workshop;

The management steps include:

S500, move to different positions on the digital twin of the factory building through manual or automatic switching control, and roam to display the simulated scene and parameter information of the moving position in the first person perspective;

S600. Manually select and view any digital twin and its parameter information in the factory layer, workshop layer, and equipment layer.

In step S200, the factory building digital twin, the workshop equipment digital twin and the production equipment digital twin in the 3D model are given physical attributes of the model; preferably, the movement components of the workshop equipment digital twin and the production equipment digital twin Name, define the physical properties of each motion component through the code, limit the relative displacement of the model, simulate the motion properties of the actual equipment, constrain the motion trajectory, and define the virtual control signal.

Preferably, in step S300, through the communication interface of the PLC control platform, the production equipment in the actual workshop and the production equipment digital twin in the 3D model are configured to signal, and the parameter information of the production equipment is generated through the upper computer database to drive production The device digital twin generates virtual I/O signals for action and display.

Preferably, in the signal configuration of the production equipment in the actual workshop and the digital twin of the production equipment in the 3D model, the physical attributes and virtual I/O signals of the digital twin are configured, and the already defined model is physically configured. The physical and motion attributes of the components in the attribute define the variable name of the virtual I/O signal through the code, so that the control of each digital twin corresponds to the virtual I/O signal of the PLC control platform.

In step S500, move to different positions on the digital twin of the factory building by manual or automatic switching control; preferably, manual switching is controlled by mouse or keyboard to move; the automatic switching displays the factory scene by looping around a fixed moving track.

The beneficial effects of the invention

Beneficial effect

The factory management system and its method through the establishment of a digital twin and the synchronous communication connection between the digital twin and the actual workshop, not only can realize the real-time display of the basic information and operating status of the equipment in the workshop, but also can select any equipment according to the demand. Monitoring makes factory management more intuitive and simple.

Brief description of the drawings

Description of the drawings

Figure 1 is a structural block diagram of a factory management system according to an embodiment of the present invention;

FIG. 2 is a flowchart of steps of creating a factory management method according to an embodiment of the present invention;

FIG. 3 is a flowchart of management steps of a factory management method according to an embodiment of the present invention;

FIG. 4 is a preview diagram of some component definitions of a virtual device according to an embodiment of the present invention.

Invention embodiment

Embodiments of the invention

In order to solve the problems of the prior art, an embodiment of the present invention proposes a factory management system based on a digital twin platform and a corresponding management method. Before describing the embodiments of the present invention, a digital twin development platform is first introduced to help understand the relevant solutions in the embodiments of the present invention.

Based on the digital twin development platform, a factory management system is provided in the embodiment of the present invention, which is used for the management of a 3D model of a factory. The specific plan is as follows:

See Figure 1. The factory management system includes a factory layer, a workshop layer, an equipment layer, and a control layer.

Among them, the factory layer includes the digital twin of the factory building in the 3D model and the parameter information of the digital twin of the factory building. The aforementioned factory building digital twins include, but are not limited to, building digital twins, channel digital twins, and workshop digital twins corresponding to buildings, passages, and workshops, respectively.

The workshop layer includes the workshop equipment digital twin in the workshop and the parameter information of the workshop equipment digital twin. The aforementioned digital twins of workshop equipment include, but are not limited to, AGV digital twins and logistics drum line digital twins corresponding to AGV vehicles and logistics drum lines respectively.

The equipment layer includes the production equipment digital twin and the parameter information of the production equipment digital twin. The aforementioned digital twins of production equipment include, but are not limited to, storage digital twins and automation equipment digital twins that correspond to storage and automation equipment, respectively.

It should be noted here that although a variety of building digital twins, workshop equipment digital twins, and production equipment digital twins are listed in this embodiment, for larger-scale factories, it can also include other factory areas. The digital twins of building bodies, other digital twins of workshop equipment and digital twins of production equipment will not be described in detail here.

The control layer is used to control the digital twins in the factory layer, the workshop layer and the equipment layer to produce corresponding actions according to the signals transmitted in the actual workshop, and choose to view any digital twins and their parameter information in the factory, workshop and equipment layers .

Specifically, including

In the control of the factory floor, manual or automatic switching control is used to move to different positions on the digital twin of the factory building, and roam and display the simulated scene and parameter information of the moving position from the first-person perspective to guide customers to understand the distribution of the entire workshop.

In the control of the workshop level, the parameter information of the workshop equipment in the actual workshop is obtained through the MES signal, and is synchronously sent to the mapping model in the digital twin of the workshop equipment, so that the workshop equipment parameter information in the actual workshop is displayed on the workshop level in real time. For example, the status of materials in AGV vehicles and logistics lines can be displayed by clicking on the corresponding digital twin to display the number and quantity of the current material. If you need to check the operation of the production equipment, click the digital twin of the production equipment to enter the equipment layer.

Different from the control of the factory layer and the workshop layer, this embodiment is implemented through a PLC control platform during the control process of the equipment layer. Therefore, this embodiment also includes a PLC control platform.

The control level at the equipment level includes obtaining the parameter information of the production equipment in the actual workshop through the PLC/WCS signal of the PLC control platform, and sending it to the mapping model in the digital twin of the production equipment simultaneously, so that the production equipment in the actual workshop is Parameter information and operating status are displayed on the equipment level in real time.

Through the above system, the parameter information of each device in the actual workshop is synchronized with the created digital twin, so that the basic information and operating status of the equipment in the workshop can be displayed in real time, and the equipment in the workshop can be monitored.

In order to facilitate the implementation of the factory management system of the embodiment of the present invention, based on the above-mentioned factory management system, this embodiment also provides a factory management method on the other hand, including a creation step and a management step.

Among them, see Figure 2. The creation steps include:

S100. Create a proportional 3D model according to the actual factory layout.

After the user starts the application, the actual equipment proportional 3D model is imported into the software for processing through the import interface, and the equipment environment is built. The digital twin software first needs to ensure the unity of the digital model and the actual model, map the physical space and the virtual space, and import the high-fidelity 3D model with the equipment parts into the built software environment. The dimensions and parameters are checked to keep the relative position of each model consistent.

S200. Assign physical attributes to the digital twins of factory buildings, digital twins of workshop equipment, and digital twins of production equipment in the 3D model.

Name the motion components of the workshop equipment digital twin and the production equipment digital twin, define the physical properties of each motion component through the code, limit the relative displacement of the model, simulate the actual equipment motion properties, constrain the motion trajectory, and define virtual control signals.

In the equipment, a large number of original moving parts, such as cylinders, motors, hydraulic cylinders, etc., drive the actuators to complete the corresponding actions. Each actuator needs to be named, and the weight and movement of each execution unit are defined by editing the corresponding code. Trajectory, speed, start and stop, etc. For example, define the number information, speed signal and position signal of the AGV digital twin and the digital twin of the logistics drum line.

In order to realize the management of the factory, the synchronization between the equipment and the digital twin in the actual workshop specifically includes action synchronization and information synchronization. Step S300 realizes information synchronization, and step S400 realizes action synchronization.

S300: Obtain the parameter information of the workshop equipment and the production equipment in the actual workshop, and synchronously send them to the digital twin of the workshop equipment and the mapping model in the digital twin of the production equipment.

Specifically, including:

S301. The parameter information acquisition process of workshop equipment uses MES signal to receive and control the signals of the workshop AGV car and logistics drum line, and synchronously send it to the mapping model in the workshop equipment digital twin to realize the workshop equipment digital twin and the actual workshop AGV The material on the cart and the material roller line moves synchronously.

S302. In the process of obtaining parameter information of production equipment, through the communication interface of the PLC control platform, signal configuration is performed on the production equipment in the actual workshop and the digital twin of the production equipment in the 3D model, and the parameter information of the production equipment, such as the automation equipment Sensors, motors, robots, output, utilization rate and other parameter information, through the host computer database, generate virtual I/O signals that drive the digital twin of the production equipment to produce actions and display.

Before the signal configuration, it is necessary to configure the physical attributes and virtual I/O signals of the digital twin given in step S200, and define the virtual I/O through codes for the physical and motion attributes of the components in the physical attributes of the already defined model. The variable name of the signal makes the control of each digital twin correspond to the virtual I/O signal of the PLC control platform. In this process, the virtual model can be configured point-to-point according to the PLC and database signals of the actual equipment, so that each control signal has its corresponding control virtual signal. The naming standard of the digital twin script is unified, and the entire Name the device model and configure its corresponding attribute variables.

After the digital twin is connected to the PLC control platform, it realizes the synchronization of information and alarm information between the digital twin and the actual equipment product, and also realizes the synchronization of information such as the type and quantity of raw materials of the produced product. For example, when an abnormal alarm is detected during the operation of the equipment, the digital twin will display the alarm information synchronously, and flash the abnormal part, which can quickly locate the abnormal position, realizing remote monitoring and visualization functions.

For the storage status of the warehouse, the storage status of the warehouse and the movement status of the stacker are displayed in three-dimensional mode in real time.

S400, workshop equipment digital twin and production equipment digital twin produce corresponding actions according to the parameter information transmitted in the actual workshop.

Based on the development of the underlying software code, the digital twin platform has achieved compatibility with Siemens, Beckhoff, Mitsubishi, Omron and other brands. The hardware communication interface is connected with the software interface to realize the functions of hardware-driven hardware and hardware-driven software. The control signals, sensor signals, and operating data of the system are transmitted to the digital twin in real time to achieve synchronized actions and synchronized display. In this embodiment, the communication interface configuration is performed according to different PLC brands, so that the program signal of the PLC control platform and the virtual I/O signal are interconnected, and a bridge connecting the virtual space and the real world is established.

After the digital twin is connected to the PLC control platform, the virtual model is synchronized with the actual device process action. At this time, the digital twin and the field device mode state are consistent. When the device is started, the action of the digital twin reflects the action of the field device in real time. The device's digital twin moves in sync.

After creating the factory management system, the staff can implement factory management through management steps.

See Figure 3. The above management steps include:

S500, through manual or automatic switching control to move to different positions on the digital twin of the factory building, and roam to display the simulated scene and parameter information of the moving position in the first person perspective.

Among them, manual switching is controlled by the mouse or keyboard to move; automatic switching shows the factory scene by looping around a fixed moving track.

S600, manually select to view any digital twin and its parameter information in the factory, workshop, and equipment layers.

Using the above-mentioned factory management system and its method, through the establishment of a digital twin and a synchronous communication connection between the digital twin and the actual workshop, not only can it realize real-time display of the basic information and operating status of the equipment in the workshop, but also can choose any The equipment is monitored to make factory management more intuitive and simple. When a customer visits, a new customer order is generated, the equipment is initialized, and the order is produced. The interface will refresh the equipment production order process in real time, and you can view the production status of the order.

The system embodiments described above are merely illustrative, where the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments, and those of ordinary skill in the art can understand and implement them without creative work.

Through the description of the above implementation manners, those skilled in the art can clearly understand that each implementation manner can be implemented by software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions essentially or not part of the contribution to the existing technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM/RSM, magnetic A disc, an optical disc, etc., include a number of instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiment.

The above-mentioned embodiments do not constitute a limitation on the protection scope of the technical solution. Any modifications, equivalent replacements and improvements made within the spirit and principles of the above implementation manners should be included in the protection scope of the technical solution.

Claims

The factory management system based on the digital twin platform is characterized by: it is used to manage the scaled 3D model of the factory; including

The factory layer includes the digital twin of the factory building in the 3D model and the parameter information of the digital twin of the factory building;

The workshop layer, including the digital twin of the workshop equipment in the workshop and the parameter information of the digital twin of the workshop equipment;

The equipment layer includes the production equipment digital twin and the parameter information of the production equipment digital twin; and

The control layer is used to control the digital twins in the factory layer, the workshop layer and the equipment layer to produce corresponding actions according to the signals transmitted in the actual workshop, and select to view any digital twins in the factory layer, the workshop layer and the equipment layer And its parameter information.
The factory management system according to claim 1, wherein:

The factory building digital twins on the factory floor include: architectural digital twins, channel digital twins and workshop digital twins;

The workshop equipment digital twins at the workshop level include: AGV digital twins and logistics drum line digital twins;

The production equipment digital twin at the equipment layer includes: a storage digital twin and an automation equipment digital twin.
The factory management system according to claim 2, characterized in that: the control of the control layer at the factory layer includes moving to different positions on the digital twin of the factory building through manual or automatic switching control, and in the first person Perspective roaming displays the simulated scene and parameter information of the mobile location.
The factory management system according to claim 3, characterized in that: the control of the control layer at the workshop level includes acquiring parameter information of the workshop equipment in the actual workshop through MES signals, and sending it synchronously to the workshop equipment digital The mapping model in the twin.
The factory management system according to claim 4, characterized in that it further comprises a PLC control platform; the control of the control layer at the equipment layer includes obtaining the production equipment in the actual workshop through the PLC/WCS signal of the PLC control platform Parameter information of, synchronously sent to the mapping model in the digital twin of the production equipment.
The management method based on the factory management system according to any one of claims 1-5, characterized in that it comprises a creation step and a management step:

The creation steps include:

S100. Create a proportional 3D model according to the actual factory layout;

S200. Assign physical attributes to the digital twins of factory buildings, digital twins of workshop equipment and digital twins of production equipment in the 3D model;

S300. Obtain the parameter information of the workshop equipment and production equipment in the actual workshop, and send them synchronously to the digital twin of the workshop equipment and the mapping model in the digital twin of the production equipment;

S400, workshop equipment digital twin and production equipment digital twin produce corresponding actions according to the parameter information transmitted in the actual workshop;

The management steps include:

S500, move to different positions on the digital twin of the factory building through manual or automatic switching control, and roam to display the simulated scene and parameter information of the moving position in the first person perspective;

S600. Manually select and view any digital twin and its parameter information in the factory layer, workshop layer, and equipment layer.
According to the factory management method of claim 5, in step S200, the factory building digital twin, the workshop equipment digital twin, and the production equipment digital twin in the 3D model are given physical attributes of the model; characterized in that: the workshop equipment The motion components of the digital twin and the digital twin of the production equipment are named, the physical attributes of each motion component are defined through the code, the relative displacement of the model is limited, the motion attributes of the actual equipment are simulated, the motion trajectory is restricted, and the virtual control signal is defined.
The factory management method according to claim 6, characterized in that: in step S300, through the communication interface of the PLC control platform, signal configuration is performed on the production equipment in the actual workshop and the production equipment digital twin in the 3D model, and The parameter information of the production equipment generates virtual I/O signals that drive the digital twin of the production equipment to generate actions and displays through the upper computer database.
The factory management method according to claim 7, characterized in that: in the signal configuration of the production equipment in the actual workshop and the production equipment digital twin in the 3D model, the physical attributes of the digital twin and the virtual I/ The O signal is configured, and the physical and motion attributes of the component in the physical attributes of the already defined model are defined by the code to define the variable name of the virtual I/O signal, so that the control of each digital twin and the virtual I/O signal of the PLC control platform correspond.
The factory management method according to claim 6, in step S500, moving to a different position on the digital twin of the factory building is controlled by manual or automatic switching; characterized in that: manual switching is controlled by mouse or keyboard to move; Switch to display the factory scene in a loop around a fixed moving track.