CN115834629A - Physical equipment interconnection platform and method for digital twin manufacturing workshop - Google Patents
Physical equipment interconnection platform and method for digital twin manufacturing workshop Download PDFInfo
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Abstract
The invention relates to a physical equipment interconnection platform and a method facing a digital twin manufacturing workshop, wherein the interconnection platform is characterized by comprising an interface conversion platform, a protocol integration platform and a digital twin management and control system; the interface conversion platform is connected with each multi-source heterogeneous physical device in the manufacturing workshop and is used for converting the physical interface of each multi-source heterogeneous physical device in the manufacturing workshop into a uniform interface type; the protocol integration platform is used for integrating multiple communication protocols by adopting multiple threads, acquiring equipment data of each multi-source heterogeneous physical equipment and processing the equipment data; the digital twin management and control system is used for determining the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform.
Description
Technical Field
The invention relates to the field of equipment communication, in particular to a physical equipment interconnection platform facing a digital twin manufacturing workshop.
Background
In a digital twin manufacturing workshop, virtual-real mapping and bidirectional interaction between physical information and digital information of the manufacturing workshop can be supported, so that a real-time intelligent closed loop of data perception, real-time analysis, intelligent decision-accurate execution is formed; in addition, the digital twin manufacturing workshop can also carry out comprehensive interaction and deep fusion on physical live data such as running states, environmental changes and sudden disturbance and information space data such as simulation prediction, statistical analysis and domain knowledge, and enhances the synchronism and consistency of the physical world and the information world. Therefore, the data is the core driving force of the digital twin, the effective integration of the manufacturing data is completed, and the real-time control of the manufacturing process condition is the key factor passing through the intelligent manufacturing of the digital twin.
However, in the aspect of equipment communication, due to the fact that equipment heterogeneity is brought by different production process differences of manufacturing workshops, and the types of equipment interfaces are numerous, communication protocols are not uniform, so that an information island is formed between equipment and the equipment, most of the existing interconnection and intercommunication platforms only carry out protocol integration and protocol conversion aiming at a standard industrial communication protocol, and do not carry out integration and conversion of a manufacturing equipment private protocol; in the aspect of data acquisition and transmission, the problems of data item dispersion, complex and various data formats and types and the like exist, and an effective integration and efficient transmission means for data is lacked; these severely impact real-time acquisition and transmission of production data at the manufacturing site and also limit the development of digital twins in manufacturing plants.
Therefore, the realization of the multi-element communication and data integration among the devices is a necessary link for building a digital twin manufacturing workshop.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a physical device interconnection platform for a digital twin manufacturing shop, which is capable of implementing multiple communications and data integration between devices.
In order to achieve the purpose, the invention adopts the following technical scheme: on one hand, the physical equipment interconnection platform facing the digital twin manufacturing workshop comprises an interface conversion platform, a protocol integration platform and a digital twin management and control system;
the interface conversion platform is connected with each multi-source heterogeneous physical device in the manufacturing workshop and is used for converting the physical interface of each multi-source heterogeneous physical device in the manufacturing workshop into a uniform interface type;
the protocol integration platform is used for integrating multiple communication protocols by adopting multiple threads, acquiring equipment data of each multi-source heterogeneous physical equipment and processing the equipment data;
and the digital twin management and control system is used for determining the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform.
Further, the multi-source heterogeneous physical device comprises a communication protocol interface device and a non-communication protocol interface device, wherein the communication protocol interface device comprises a general protocol device and a private protocol device.
Further, the protocol integration platform is internally provided with:
the protocol access module is used for establishing a communication protocol library and a connection parameter library and setting connection parameters and connection modes of the multi-source heterogeneous physical equipment; establishing a plurality of sub-threads aiming at the accessed equipment, and identifying the accessed multi-source heterogeneous physical equipment and the corresponding communication protocol thereof through a communication protocol library and a connection parameter library which are established by traversing each sub-thread;
the data acquisition module is used for setting specific values of the connection parameters according to the communication protocols and the connection parameters determined by the protocol access module and performing equipment connection through each sub-thread; acquiring equipment data of each multi-source heterogeneous physical equipment based on the set acquisition frequency; receiving a control instruction and sending the control instruction to the multi-source heterogeneous physical equipment through the interface conversion platform;
the data processing module is used for carrying out system conversion and data structure disassembly on the equipment data acquired by the data acquisition module by adopting a system conversion algorithm and carrying out normalization processing on the processed data format;
the data storage and cache module is used for creating a data cache queue according to the data after the normalization processing and sending the data cache queue to the digital twin management and control system;
and the data issuing module is used for receiving the control instruction issued by the digital twin workshop management and control system and sending the control instruction to the data acquisition module.
Furthermore, the communication protocol library established by the protocol access module comprises a general protocol and a private protocol, and the connection parameters set by the protocol access module comprise connection parameters of the Ethernet equipment and connection parameters of the serial equipment.
Furthermore, a plurality of timers are arranged in the data acquisition module, and each multi-source heterogeneous physical device corresponds to one timer and is used for controlling the acquisition frequency of the device data.
Further, the timer adopts a multi-stage time wheel timer.
Furthermore, the data cache queue comprises processing data, running states, acquisition frequencies, equipment addresses of the access platform and running data of the system, wherein the processing data, the running states, the acquisition frequencies and the equipment addresses of all the multi-source heterogeneous physical equipment are used for establishing connection.
Further, the interface conversion platform adopts an embedded ASIC chip.
In another aspect, a physical device interconnection method facing a digital twin manufacturing shop is provided, and includes:
connecting each multisource heterogeneous physical device in a manufacturing workshop with an interface conversion platform, wherein the interface conversion platform converts the physical interface of each multisource heterogeneous physical device into a uniform interface type;
the protocol integration platform integrates multiple communication protocols by adopting multiple threads, and equipment data of each multi-source heterogeneous physical equipment is obtained and processed;
the digital twin management and control system determines the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform;
the protocol integration platform receives a control instruction issued by the digital twin workshop management and control system, and sends the control instruction to the multi-source heterogeneous physical equipment through the interface conversion platform to control the multi-source heterogeneous physical equipment to move.
Further, the protocol integration platform adopts multiple threads to integrate multiple communication protocols, obtains device data of each multi-source heterogeneous physical device and processes the device data, and comprises:
the protocol access module establishes a communication protocol library and a connection parameter library and sets connection parameters of each multi-source heterogeneous physical device;
the protocol access module creates a plurality of sub-threads, and each sub-thread identifies accessed multi-source heterogeneous physical equipment and a corresponding communication protocol thereof through traversing the created communication protocol library and the connection parameter library;
the data acquisition module sets specific values of the connection parameters according to the communication protocol and the connection parameters determined by the protocol access module, and performs equipment connection through each sub-thread;
the data acquisition module calls a data acquisition function based on the set acquisition frequency to acquire equipment data of each multi-source heterogeneous physical equipment;
the data processing module adopts a system conversion algorithm to carry out conversion between systems and disassemble a data structure on the equipment data acquired by the data acquisition module, and carries out normalization processing on the converted data format;
and the data storage and cache module creates a data cache queue to store the equipment data of all the connected multisource heterogeneous physical equipment according to the data after normalization processing, and sends the data cache queue to the digital twin management and control system.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. by the platform, the interconnection and intercommunication capacity among multi-source heterogeneous physical equipment can be improved, the real-time acquisition, transmission, decision and control of production process data are realized, a data island among the equipment is effectively eliminated, and the platform has the advantages of good communication protocol compatibility, high data acquisition efficiency, comprehensive data acquisition and the like.
2. The invention can realize the integration of various equipment interfaces and communication protocols, can realize the deployment of the server through simple file copying compared with the traditional C/S framework software, has stronger expandability, is beneficial to the expansion of the protocols, and is convenient for the integration of cross-local area networks and cross-over interfaces among the communication protocols.
3. Aiming at the characteristics of huge data quantity and different data structures required by a digital twin workshop, the system is used as a middleware platform, can provide a data interaction interface for a physical device and a digital twin manufacturing workshop control platform, does not need to frequently access a database port compared with a traditional database interaction mode, and simultaneously improves the effects of multi-device information interaction, data transmission and cooperative operation of the workshop.
In summary, the present invention can be widely applied in the field of device communication.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic diagram of an overall architecture of an interworking platform according to an embodiment of the present invention;
fig. 2 is a schematic processing flow diagram of an interworking platform according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
The physical equipment interconnection platform for the digital twin manufacturing workshop, provided by the embodiment of the invention, integrates a multi-protocol conversion technology and a data processing technology to realize an upper computer digital twin system and multi-source heterogeneous physical equipment of the physical manufacturing workshop, and comprises the following steps: the interconnection and intercommunication among the numerical control machine tool, the industrial robot, the sensor, the PLC and the like can complete the compatibility among different industrial protocols and the integrated transmission among different data, eliminate 'information islands' among equipment and improve the acquisition and transmission capability of data.
Example 1
As shown in fig. 1, the embodiment provides a physical device interconnection platform for a digital twin manufacturing shop, which includes a physical device layer, a protocol access layer, and an application service layer, where each multi-source heterogeneous physical device in the manufacturing shop is disposed in the physical device layer, an interface conversion platform and a protocol integration platform are disposed in the protocol access layer, a digital twin management and control system is disposed in the application service layer, and both the protocol integration platform and the digital twin management and control system are disposed in an industrial controller.
And each multi-source heterogeneous physical device in the manufacturing workshop is connected with a protocol integration platform through an interface conversion platform, and the protocol integration platform is also connected with a digital twin management and control system and is used for data interaction.
The interface conversion platform is used for converting physical interfaces of various multi-source heterogeneous physical devices in the manufacturing workshop into a uniform interface type.
The industrial personal computer is physically connected with each multi-source heterogeneous physical device through the interface conversion platform, and the protocol integration platform is used for integrating multiple communication protocols by adopting multiple threads, acquiring and processing equipment data of each multi-source heterogeneous physical device.
The digital twin management and control system is used for determining the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform and performing data management and visual monitoring on the production process.
The physical equipment interconnection platform of the embodiment uses a digital twin manufacturing workshop as an application object, uses multi-source heterogeneous physical equipment as a support, uses the interconnection platform as a transmission medium, can realize network interconnection, data perception and system interoperation among different brands, protocols and types of equipment in the digital twin manufacturing workshop, can effectively eliminate data islands among the equipment, can provide a universal and reliable data source for an upper-level digital twin manufacturing workshop management and control system through the platform, and has the advantages of good communication protocol compatibility, high data acquisition efficiency, comprehensive data acquisition and the like.
In a preferred embodiment, the multi-source heterogeneous physical devices in the manufacturing workshop comprise manufacturing devices located in a plurality of different functional areas in the manufacturing workshop, wherein each manufacturing device is from equipment manufacturers and manufacturers in different industries, and based on the device heterogeneity caused by the production process difference, the multi-source heterogeneous physical devices are divided into a loading and unloading device, a processing device, a carrying device, a control device, an image recognition device and an auxiliary communication device according to the main responsible work of the devices, and the differences of the devices bring huge differences on communication protocols, so that the multi-source heterogeneous physical devices are divided into a communication protocol interface device and a communication protocol interface-free device according to the conditions of existence and nonexistence of the communication interfaces.
Specifically, the communication protocol interface equipment comprises general protocol equipment and private protocol equipment, wherein the general protocol equipment comprises a BROTHER numerical control processing center based on a TCP/IP protocol, a SIEMENS numerical control processing center based on an OPC UA protocol, an AGV logistics trolley based on a wireless communication protocol, a code scanning gun based on a USB protocol, a data acquisition card based on a MODBUS-TCP protocol and instrument equipment based on a MODBUS-RTU protocol, and the private protocol equipment comprises a FANUC numerical control processing center based on a FOCAS protocol, a Huazhong numerical control processing center based on an Hnc protocol, a KUKA industrial robot based on an ETHERNETKRL protocol, an Anthony industrial robot based on a MOTOCOMES protocol, a Mitsubishi Fx series PLC based on an Fx Serial protocol, a Siemens S series PLC based on an S7 protocol and the like.
Specifically, the communication protocol-free interface equipment comprises equipment such as an old-fashioned machine tool without specific brands and models, a non-standard feeding and discharging logistics device and the like, and interconnection and intercommunication of equipment data are realized by adopting a mode of additionally installing a sensor, a data acquisition card and an internet of things communication module, wherein the installed sensor comprises a displacement sensor, a temperature sensor, a humidity sensor, a pressure sensor, a vibration sensor and the like.
In a preferred embodiment, the interface conversion platform adopts an embedded ASIC chip, and includes physical interfaces such as an RS232 bus interface, an RS485 bus interface, an RS422 interface, a USB interface, a PROFINET field bus interface, a CAN bus interface, and an ethernet interface.
In a preferred embodiment, the protocol integration platform adopts a C # language ASP.NET framework to develop a Web Service interface, and a protocol access module, a data acquisition module, a data processing module, a data storage and cache module, a database server and a data issuing module are arranged in the protocol integration platform.
The protocol access module is used for establishing a communication protocol library and a connection parameter library, setting connection parameters and connection modes of each multi-source heterogeneous physical device aiming at the difference between the communication protocol library and the communication mode, and judging whether the connection parameters are effective data or not according to the matching result of the protocol library and the connection parameter library; and establishing a plurality of sub-threads aiming at the accessed equipment, and identifying the accessed multi-source heterogeneous physical equipment and the corresponding communication protocol thereof through a communication protocol library and a connection parameter library which are established by traversing each sub-thread, wherein the connection parameters comprise Ethernet equipment connection parameters and serial equipment connection parameters, the Ethernet equipment connection parameters comprise IP addresses, port numbers, delay time and the like, and the serial equipment connection parameters comprise serial port numbers, baud rates, data bits, stop bits, parity bits and the like.
The data acquisition module is used for setting specific values of the connection parameters according to the communication protocol and the connection parameters determined by the protocol access module, calling a device connection method contained in the communication protocol through a sub-thread to connect the devices, and returning a device connection handle; calling a data acquisition function based on the set acquisition frequency to acquire equipment data of each multi-source heterogeneous physical equipment; and receiving a control instruction sent by the data issuing module, sending the control instruction to the multi-source heterogeneous physical equipment through the interface conversion platform, and completing data transmission between the multi-source heterogeneous physical equipment in a subscription-publishing mode.
The data processing module is used for processing data of the interconnection and intercommunication platform in batches, aiming at the characteristics of multiple types, complex formats, difficult conversion and the like of multi-source heterogeneous physical equipment data, a binary system, decimal system and hexadecimal system conversion and data structure disassembly are carried out on the equipment data acquired by the data acquisition module by adopting a binary system conversion algorithm, the processed data format is subjected to normalization processing, the data subjected to normalization processing is loaded into JSON format data in a normalization mode, light-weight processing is carried out on the data, and the data transmission speed is improved.
And the data storage and cache module is used for communicating with the database server through the SQL sentences and sending the JSON format data to the database server. Meanwhile, a data cache queue is created to cache processing data, running states, acquisition frequency, equipment addresses of an access platform, running data of the system and other equipment data of all connected multisource heterogeneous physical equipment, and the data cache queue is sent to the digital twin management and control system, so that the digital twin management and control system can call, analyze and calculate the cache data conveniently.
The database Server is used for storing the equipment data in the corresponding equipment data table by adopting SQL Server, and performing centralized management and data tracing of the data.
The data issuing module is used for receiving a control instruction issued by the digital twin workshop management and control system by adopting an MQTT protocol, and issuing the control instruction to the multi-source heterogeneous physical equipment through the data acquisition module via the interface conversion platform to control the multi-source heterogeneous physical equipment to move.
Specifically, the communication protocol library established by the protocol access module includes a general protocol and a private protocol, wherein the general protocol includes a TCP/IP protocol, an OPC UA protocol, a USB protocol, a wireless communication protocol, a MODBUS-TCP protocol, a MODBUS-RTU protocol, and the like, and the private protocol includes a FOCAS protocol, an Hnc protocol, an ethernet krl protocol, a MOTOCOMES protocol, an Fx Serial protocol, an S7 protocol, and the like.
Specifically, different connection modes are selected according to different communication modes of connection parameters set by the protocol access module, wherein the connection parameters comprise Ethernet device connection parameters and serial device connection parameters, the Ethernet device connection parameters comprise IP addresses, port numbers, delay time and the like, and the serial device connection parameters comprise serial port numbers, baud rates, data bits, stop bits, parity bits and the like.
Specifically, a plurality of timers are arranged in the data acquisition module, each multi-source heterogeneous physical device corresponds to one timer and is used for controlling the acquisition frequency of device data, the multi-stage time wheel timers are adopted for classifying and setting the acquisition frequencies of different device data, and the setting rule of the acquisition frequencies comprises real-time data millisecond acquisition, state data second-level acquisition, resume information data minute acquisition and the like.
Specifically, the device data available to the data acquisition module is shown in table 1 below:
table 1: device data retrievable by a data acquisition module
In a preferred embodiment, the digital twin management and control system comprises an enterprise resource planning system (ERP), a Manufacturing Execution System (MES), a Warehouse Management System (WMS), a digital twin computing decision center, a digital twin three-dimensional visualization center and a digital twin monitoring billboard.
The enterprise resource planning system is used for integrated management of the whole supply chain resources such as people, property, things and the like.
The manufacturing execution system is used for integrated management of manufacturing data, planning and scheduling, project boards, inspection tools, production equipment, measurement data, production scheduling, and the like.
Warehouse management systems are used to efficiently manage information, resources, activities, inventory, and distribution operations.
And the digital twin computing decision center is used for integrating an intelligent algorithm, determining the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform, and diagnosing and predicting the device faults.
The digital twin three-dimensional visualization center is used for visually displaying the acquired equipment state data, real-time data and historical information data in a three-dimensional visualization mode.
The digital twin monitoring billboard is used for modifying and regulating the production plan and equipment scheduling and sending a control instruction to the interface conversion platform.
Example 2
The embodiment provides a physical equipment interconnection method facing a digital twin manufacturing workshop, which comprises the following steps:
1) And connecting each multisource heterogeneous physical device in the manufacturing workshop with an interface conversion platform, wherein the interface conversion platform converts the physical interface of each multisource heterogeneous physical device into a uniform interface type.
2) As shown in fig. 2, the protocol integration platform integrates multiple communication protocols by using multiple threads, obtains device data of each multi-source heterogeneous physical device, and processes the device data, specifically:
2.1 The protocol access module establishes a communication protocol library and a connection parameter library and sets connection parameters of each multi-source heterogeneous physical device.
2.2 The protocol access module sets connection parameters and connection modes of all multi-source heterogeneous physical equipment according to the difference between a communication protocol library and the communication mode, judges whether the connection parameters are valid data or not according to the matching result of the protocol library and the connection parameter library, and if yes, enters step 2.3); otherwise, resetting the connection parameters of each multi-source heterogeneous physical device.
2.3 The protocol access module creates several sub-threads.
2.4 Each sub-thread identifies the accessed multi-source heterogeneous physical equipment and the corresponding communication protocol thereof by traversing the established communication protocol library and the connection parameter library.
2.5 The data acquisition module sets specific values of connection parameters according to the communication protocols and the connection parameters determined by the protocol access module, calls a connection communication method corresponding to the multi-source heterogeneous physical equipment through each sub-thread to connect the equipment, judges whether the connection is successful or not, and if the connection is successful, enters step 2.6); otherwise, step 2.4) is entered.
2.6 The data acquisition module calls a data acquisition function based on the set acquisition frequency to acquire the equipment data of each multi-source heterogeneous physical equipment.
2.7 The data processing module adopts a binary conversion algorithm to convert the binary system, the decimal system and the hexadecimal system of the equipment data acquired by the data acquisition module and disassemble a data structure, performs normalization processing on the processed data format, and normalizes and loads the normalized data into JSON format data.
2.8 The data storage caching module sends the JSON format data to a database server for centralized management and data tracing of the data, creates a data caching queue according to the JSON format data after normalization processing to store equipment data of all connected multisource heterogeneous physical equipment, and sends the data caching queue to a digital twin management and control system.
2.9 The data storage caching module judges whether the data caching queue is successfully sent or not, and if the data caching queue is successfully sent, the step 3) is carried out; otherwise, after the data storage cache module modifies the upload port, the step 2.8) is performed.
3) The digital twin management and control system determines the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform, and performs data management and visual monitoring on the production process, specifically comprising the following steps:
3.1 The digital twin computing decision center integrates an intelligent algorithm, determines the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform, and carries out device fault diagnosis and prediction.
3.2 The digital twin three-dimensional visualization center carries out visualization display on the acquired equipment state data, real-time data and historical information data in a three-dimensional visualization mode.
3.3 Digital twin monitoring boards modify and regulate production plans and equipment scheduling, and issue control instructions to the interface conversion platform.
3.4 The digital twin monitoring billboard judges whether the control instruction is successfully issued, if so, the step 4) is carried out; otherwise, the control instruction is issued again after the issuing port is modified.
4) And the data issuing module of the protocol integration platform adopts an MQTT protocol, receives a control instruction issued by the digital twin workshop management and control system and sends the control instruction to the data acquisition module.
5) And the data acquisition module of the protocol integration platform sends the control command to the multi-source heterogeneous physical equipment through the interface conversion platform to control the multi-source heterogeneous physical equipment to move.
The above embodiments are only used for illustrating the present invention, and the structure, connection mode, manufacturing process, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.
Claims (10)
1. A physical equipment interconnection platform facing a digital twin manufacturing workshop is characterized by comprising an interface conversion platform, a protocol integration platform and a digital twin management and control system;
the interface conversion platform is connected with each multi-source heterogeneous physical device in the manufacturing workshop and is used for converting the physical interface of each multi-source heterogeneous physical device in the manufacturing workshop into a uniform interface type;
the protocol integration platform is used for integrating multiple communication protocols by adopting multiple threads, acquiring equipment data of each multi-source heterogeneous physical equipment and processing the equipment data;
and the digital twin management and control system is used for determining the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform.
2. The physical equipment interconnection platform oriented to the digital twin manufacturing shop of claim 1, wherein the multi-source heterogeneous physical equipment comprises communication protocol interface equipment and non-communication protocol interface equipment, wherein the communication protocol interface equipment comprises general protocol equipment and proprietary protocol equipment.
3. The physical equipment interconnection platform facing the digital twin manufacturing plant according to claim 1, wherein the protocol integration platform is internally provided with:
the protocol access module is used for establishing a communication protocol library and a connection parameter library and setting connection parameters and connection modes of the multi-source heterogeneous physical equipment; establishing a plurality of sub-threads aiming at the accessed equipment, and identifying the accessed multi-source heterogeneous physical equipment and the corresponding communication protocol thereof through a communication protocol library and a connection parameter library which are established by traversing each sub-thread;
the data acquisition module is used for setting specific values of the connection parameters according to the communication protocols and the connection parameters determined by the protocol access module and performing equipment connection through each sub-thread; acquiring equipment data of each multisource heterogeneous physical equipment based on the set acquisition frequency; receiving a control instruction and sending the control instruction to the multi-source heterogeneous physical equipment through the interface conversion platform;
the data processing module is used for carrying out system conversion and data structure disassembly on the equipment data acquired by the data acquisition module by adopting a system conversion algorithm and carrying out normalization processing on the processed data format;
the data storage and cache module is used for creating a data cache queue according to the data after the normalization processing and sending the data cache queue to the digital twin management and control system;
and the data issuing module is used for receiving the control instruction issued by the digital twin workshop management and control system and sending the control instruction to the data acquisition module.
4. The physical device interconnection platform oriented to the digital twin manufacturing plant according to claim 3, wherein the communication protocol library established by the protocol access module includes a general protocol and a private protocol, and the connection parameters set by the protocol access module include ethernet device connection parameters and serial device connection parameters.
5. The platform of claim 3, wherein a plurality of timers are arranged in the data acquisition module, and each multi-source heterogeneous physical device corresponds to one timer and is used for controlling the acquisition frequency of device data.
6. The physical equipment interconnection platform facing the digital twin manufacturing plant, as claimed in claim 5, wherein the timer is a multi-stage time wheel timer.
7. The physical equipment interconnection platform oriented to the digital twin manufacturing shop as claimed in claim 3, wherein the data cache queue includes processing data, operating state, collection frequency, equipment address of the access platform and system operation data of all connected multi-source heterogeneous physical equipment.
8. The physical equipment interconnection platform oriented to the digital twin manufacturing shop of claim 1, wherein the interface conversion platform adopts an embedded ASIC chip.
9. A physical equipment interconnection method facing a digital twin manufacturing shop is characterized by comprising the following steps:
connecting each multisource heterogeneous physical device in a manufacturing workshop with an interface conversion platform, wherein the interface conversion platform converts the physical interface of each multisource heterogeneous physical device into a uniform interface type;
the protocol integration platform integrates multiple communication protocols by adopting multiple threads, and equipment data of each multi-source heterogeneous physical equipment is obtained and processed;
the digital twin management and control system determines the working state of each multi-source heterogeneous physical device according to the device data processed by the protocol integration platform;
the protocol integration platform receives a control instruction issued by the digital twin workshop management and control system, and sends the control instruction to the multi-source heterogeneous physical equipment through the interface conversion platform to control the multi-source heterogeneous physical equipment to move.
10. The physical equipment interconnection and intercommunication method facing to digital twin manufacturing shop of claim 9, wherein the protocol integration platform integrates multiple communication protocols by multiple threads, acquires and processes equipment data of each multi-source heterogeneous physical equipment, and comprises:
the protocol access module establishes a communication protocol library and a connection parameter library and sets connection parameters of each multi-source heterogeneous physical device;
the protocol access module creates a plurality of sub-threads, and each sub-thread identifies accessed multi-source heterogeneous physical equipment and a corresponding communication protocol thereof through traversing the created communication protocol library and the connection parameter library;
the data acquisition module sets specific values of the connection parameters according to the communication protocol and the connection parameters determined by the protocol access module, and performs equipment connection through each sub-thread;
the data acquisition module calls a data acquisition function based on the set acquisition frequency to acquire equipment data of each multi-source heterogeneous physical equipment;
the data processing module adopts a system conversion algorithm to carry out conversion between systems and disassemble a data structure on the equipment data acquired by the data acquisition module, and carries out normalization processing on the converted data format;
and the data storage and cache module creates a data cache queue to store the equipment data of all the connected multisource heterogeneous physical equipment according to the data after normalization processing, and sends the data cache queue to the digital twin management and control system.
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