CN112887183A - Experimental method and device for establishing Ethernet based on industrial star-shaped architecture - Google Patents

Experimental method and device for establishing Ethernet based on industrial star-shaped architecture Download PDF

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Publication number
CN112887183A
CN112887183A CN202110270628.3A CN202110270628A CN112887183A CN 112887183 A CN112887183 A CN 112887183A CN 202110270628 A CN202110270628 A CN 202110270628A CN 112887183 A CN112887183 A CN 112887183A
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switch
core
network
star
industrial
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刘昌宏
李淼
张志华
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/44Star or tree networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • H04L41/0677Localisation of faults

Abstract

The invention belongs to the technical field of industrial control systems, and provides an experimental method and device for establishing an Ethernet based on an industrial star-shaped architecture. The method comprises the following steps: the network structure adopts a three-layer star architecture which takes the core switch as the core and a plurality of aggregation switches as nodes; in the three-layer star-shaped framework, the outer layer comprises a sensor for acquiring information in real time; the middle layer comprises a plurality of convergence switches for integrating the information acquired by the sensors in real time, and the core layer is a core switch for bearing the switching task in the whole Ethernet; the core switch is electrically connected with the aggregation switch; the monitoring station is electrically connected with the core switch and the aggregation switch respectively and is used for monitoring the operation of the core switch and the aggregation switch. The device can replace foreign products, reduces the fund needs, and convenient detection and maintenance reduce the redundancy of network, and reasonable in design is practical, is applicable to the trade and promotes.

Description

Experimental method and device for establishing Ethernet based on industrial star-shaped architecture
Technical Field
The invention relates to the technical field of industrial control systems, in particular to an experimental method and device for establishing an Ethernet based on an industrial star-shaped architecture.
Background
The networking mode of the traditional Siemens recommended ring network of the existing industrial control system is expensive and laggard in technology, and meanwhile, along with the close and high integration of industrialization and informatization, the new technology of industrial Ethernet for production control and data acquisition continuously appears, technical basis is provided for the application of the new technology in technological improvement, the existing industrial control of a factory still adopts a traditional communication mode, meanwhile, the networking mode of the overseas Siemens recommended ring network is adopted for control, a plurality of technologies and equipment are limited by overseas brands and companies, the investment is high, and the cost is reduced by purchasing domestic brands, and spare parts are easy to purchase.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an experimental method and device for establishing an Ethernet based on an industrial star-shaped architecture, and solves the problems.
The invention provides a method and a device for establishing an Ethernet experiment based on an industrial star-shaped architecture, which comprises the following steps: the system comprises a core switch, aggregation switches and a monitoring station, wherein a network structure adopts a three-layer star-shaped architecture with the core switch as a core and a plurality of aggregation switches as nodes; in the three-layer star-shaped framework, the outer layer comprises a sensor for acquiring information in real time; the middle layer comprises a plurality of aggregation switches and is used for integrating information acquired by the sensors in real time, the core layer is a core switch, and the core switch bears an industrial control system in the whole Ethernet; the core switch is electrically connected with the aggregation switch; the monitoring station is respectively electrically connected with the core switch and the aggregation switch, and the monitoring station is used for monitoring the operation of the core switch and the aggregation switch.
Furthermore, each monitoring station uses static IP as a station network sensor, and the core switch can directly access the network sensor of any monitoring station through the static IP of the local area network. In practical application, the method can realize static steady-state information stream transmission.
Furthermore, the core switch can measure and calculate the flow of each monitoring station at regular time, and reasonably configure sampling intervals and image format parameters to perform closed-loop flow control by combining actual requirements. In this way, closed-loop flow control ensures data integrity.
Furthermore, common industrial control network industrial protocols are completely integrated into the whole network design process. In practice, all of the components (Profinet, Profibus-DP, Modbus, MPI, S7, PPI) are incorporated into the overall network design process, which improves the overall reliability of the network.
Further, the middle layer further comprises an operation and maintenance engineer station, and the operation and maintenance engineer station is electrically connected with the monitoring station. In practical application, the operation and maintenance engineer station can maintain the data of the whole system.
Further, the control website includes control switch and control computer, control switch respectively with core switch and operation and maintenance engineer station electricity are connected, control switch with the control computer electricity is connected. In practical application, the core switch and the operation and maintenance engineer station are connected by a single mode optical fiber. An engineer carries out daily data maintenance through an operation and maintenance computer; and the whole network is monitored by a monitoring computer.
Further, the outer layer still assembles switch, converter and sub-station/IO including gathering, the sensor is connected with the converter electricity, the converter is connected with sub-station/IO electricity, gather and assemble the switch with sub-station/IO electricity is connected. In practical application, the collection and transmission of industrial information are completed through the connection distribution mode, the information source is stable, and more data can be collected.
Further, the method also comprises the following steps: the main PLC sets up the intermediate level assembles between the switch with the collection, main PLC with the intermediate level passes through single mode fiber connection, main PLC with the collection assembles the switch and passes through the industrial network line electricity and connect, main PLC is used for programming control. In practical application, the master PLC is configured to transmit data collected in the aggregation switch to the aggregation switch in the middle layer connected to the master PLC.
Further, still include the touch-sensitive screen, the touch-sensitive screen with gather and assemble the switch electricity and be connected. In practical application, the method is convenient and fast to operate.
Furthermore, the core switch has two parts which are connected with each other, and the core layer is a double star type industrial ethernet. By this interconnection, stability is ensured.
According to the technical scheme, the method and the device for establishing the industrial star-architecture-based Ethernet experiment have the beneficial effects that:
(1) in the practical application, the operation and maintenance difficulty is high after the network failure occurs in the traditional Siemens recommended ring network, the star network is convenient for troubleshooting, and the failure occurrence source can be quickly known by rapidly troubleshooting the aggregation switch on each node of the middle layer through the operation and maintenance engineer station.
(2) Meanwhile, once network oscillation occurs in the local networking part of the ring network, the oscillation of the whole network is easily caused, and the abnormal general condition of the local network of the star-shaped architecture only affects the local network; has no influence on others.
(3) And the network security has great difficulty in managing and controlling the ring network equipment, the star type is easy to intensively manage and control each convergent point, and important basis is provided for the technical transformation of the industrial control network of the star type network group factory.
(4) Certainly, the star-architecture industrial ethernet network can mainly replace the networking recommended by the imported siemens, and many devices in the star-architecture industrial ethernet network can adopt domestic devices, so that the fund is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, reference will now be made briefly to the embodiments or to the accompanying drawings that are needed in the description of the prior art. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a schematic structural view of the present invention;
reference numerals: the system comprises a core switch 1, a convergence switch 2, a sensor 3, a frequency converter 4, a substation/IO 5, a touch screen 6, a collection convergence switch 7, a main PLC8, a monitoring switch 9, a monitoring computer 10, an operation and maintenance switch 11 and an operation and maintenance computer 12.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The embodiment is basically as shown in the attached figure 1:
example 1:
as shown in fig. 1, the method for establishing an ethernet experiment based on an industrial star architecture according to the present embodiment includes: the system comprises a core switch 1, a convergence switch 2 and a monitoring station, wherein the network structure adopts a three-layer star-shaped architecture which takes the core switch 1 as a core and a plurality of convergence switches 2 as nodes; in the three-layer star-shaped framework, the outer layer comprises a sensor 3 for acquiring information in real time; the middle layer comprises a plurality of convergence switches 2 for integrating the information acquired by the sensors 3 in real time, the core layer is a core switch 1, and the core switch 1 bears the switching task in the whole Ethernet; the core switch 1 is electrically connected with the aggregation switch 2; the monitoring station is respectively electrically connected with the boiler core switch 1 and the convergence switch 2 and is used for monitoring the operation of the core switch 1 and the convergence switch 2. In the practical application, the operation and maintenance difficulty is high after the network failure occurs in the traditional Siemens recommended ring network, the star network is convenient for troubleshooting, and the failure occurrence source can be quickly known by rapidly troubleshooting the aggregation switch on each node of the middle layer through the operation and maintenance engineer station. Meanwhile, once network oscillation occurs in the local networking part of the ring network, the oscillation of the whole network is easily caused, and the abnormal general condition of the local network of the star-shaped architecture only affects the local network; has no influence on others. And the network security has great difficulty in managing and controlling the ring network equipment, the star type is easy to intensively manage and control each convergent point, and important basis is provided for the technical transformation of the industrial control network of the star type network group factory. Certainly, the star-architecture industrial ethernet network can mainly replace the networking recommended by the imported siemens, and many devices in the star-architecture industrial ethernet network can adopt domestic devices, so that the fund is saved.
In this embodiment, each monitoring station uses a static IP as a station network sensor, and the core switch can directly access any network sensor of the monitoring station through the static IP of the local area network. In practical application, the method can realize static steady-state information stream transmission.
In this embodiment, the core switch may measure and calculate the flow rate of each monitoring station at regular time, and reasonably configure the sampling interval and the image format parameter to perform closed-loop flow control in combination with actual requirements. In this way, closed-loop flow control ensures data integrity.
In this embodiment, all common industrial control network industry protocols are integrated into the whole network design process. In practice, all of the components (Profinet, Profibus-DP, Modbus, MPI, S7, PPI) are incorporated into the overall network design process, which improves the overall reliability of the network.
Of course, the present embodiment also provides an experimental apparatus for establishing an ethernet based on an industrial star architecture, in which two core switches 1 are adopted, and a core layer is a dual-star industrial ethernet. The aggregation switches 2 in the middle layer are provided with a plurality of nodes or intervals, are arranged in the middle layer of the star Ethernet, and are sequentially numbered according to the numbers 1, 2 and 3 … …, so that the daily maintenance is facilitated.
In this embodiment, the middle layer further includes an operation and maintenance engineer station 11, and the operation and maintenance engineer station is electrically connected to the monitoring station. In practical application, the operation and maintenance engineer station includes an operation and maintenance switch 11 and an operation and maintenance computer 12, and data maintenance can be performed on the whole through the operation and maintenance engineer station.
In this embodiment, the monitoring station includes a monitoring switch 9 and a monitoring computer 10, the monitoring switch is electrically connected to the core switch 1 and the operation and maintenance engineer station, respectively, and the monitoring switch is electrically connected to the monitoring computer. In practical application, the core switch 1 and the operation and maintenance engineer station are connected by a single mode optical fiber. The engineer performs routine data maintenance via the operation and maintenance computer 12. The monitoring station in industrial production can adopt a modularized distributed structure design, wiring is not needed, and control nodes are flexibly and conveniently configured.
In this embodiment, the outer layer further includes a collection aggregation switch 7, a frequency converter 4 and a substation/IO 5, the sensor 3 is electrically connected to the frequency converter 4, the frequency converter 4 is electrically connected to the substation/IO 5, and the collection aggregation switch 7 is electrically connected to the substation/IO 5. In practical application, the collection and transmission of industrial information are completed through the connection distribution mode, the information source is stable, and more data can be collected.
In this embodiment, the method further includes: the main PLC8, main PLC8 set up and gather between the switch 7 at the middle level convergence switch 2, main PLC8 passes through single mode fiber with the middle level and is connected, and main PLC8 is connected through the industrial network line electricity with gathering the switch 7 and gathering, and main PLC8 is used for programming control. In practice, the master PLC8 is used to transfer data in the collection aggregation switch 7 to the aggregation switches in the connected middle tier. And self-development design software is adopted to realize control of electric control equipment such as boiler water level and water temperature, air conditioner temperature and humidity, a frequency converter motor and the like. Of course, more than one sensor or sensors are required for monitoring. And all common industrial control network industrial protocols (Profinet, Profibus-DP, Modbus, MPI, S7, PPI) are integrated into the whole network design process, and corresponding functions are developed to verify the reliability of the network. And simultaneously, the network security function is synchronously considered in the network architecture design.
In this embodiment, the system further comprises a touch screen 6, and the touch screen 6 is electrically connected with the acquisition aggregation switch 7. In practice, the operation is convenient in the mode
To sum up, the experimental method and the device for establishing the Ethernet based on the industrial star-shaped architecture can replace foreign products in the actual production process, reduce the capital requirement, facilitate the detection and the maintenance, and simultaneously reduce the redundancy of the ring network by adopting the dual-machine star-shaped reduction ring network.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. A method for establishing an Ethernet experiment based on an industrial star-shaped architecture is characterized by comprising the following steps: the system comprises a core switch, aggregation switches and a monitoring station, wherein a network structure adopts a three-layer star-shaped architecture with the core switch as a core and a plurality of aggregation switches as nodes; in the three-layer star-shaped framework, the outer layer comprises a sensor for acquiring information in real time; the middle layer comprises a plurality of aggregation switches and is used for integrating information acquired by the sensors in real time, the core layer is a core switch, and the core switch bears an industrial control system in the whole Ethernet; the core switch is electrically connected with the aggregation switch; the monitoring station is respectively electrically connected with the core switch and the aggregation switch, and the monitoring station is used for monitoring the operation of the core switch and the aggregation switch.
2. The method according to claim 1, wherein each monitoring station uses static IP as a station network sensor, and the core switch can directly access any network sensor of the monitoring station through the local area network static IP.
3. The method according to claim 2, wherein the core switch is capable of measuring and calculating the flow of each monitoring station at regular time, and performing closed-loop flow control by reasonably configuring sampling intervals and image format parameters in combination with actual requirements.
4. The method of claim 3, wherein common industrial control network industry protocols are integrated into the whole network design process.
5. The apparatus of claim 1, wherein the intermediate layer further comprises a station of an operation and maintenance engineer, and the station of the operation and maintenance engineer is electrically connected to the monitoring station.
6. The apparatus according to claim 5, wherein the monitoring station comprises a monitoring switch and a monitoring computer, the monitoring switch is electrically connected to the core switch and the station of the operation and maintenance engineer respectively, and the monitoring switch is electrically connected to the monitoring computer.
7. The experimental device for establishing the Ethernet based on the industrial star-shaped architecture according to claim 6, wherein the outer layer further comprises a collection aggregation switch, a frequency converter and a substation/IO, the sensor is electrically connected with the frequency converter, the frequency converter is electrically connected with the substation/IO, and the collection aggregation switch is electrically connected with the substation/IO.
8. The experimental facility for establishing the ethernet based on the industrial star-type architecture according to claim 7, further comprising: the main PLC sets up the intermediate level assembles between the switch with the collection, main PLC with the intermediate level passes through single mode fiber connection, main PLC with the collection assembles the switch and passes through the industrial network line electricity and connect, main PLC is used for programming control.
9. The experimental facility for establishing the ethernet based on the industrial star-type architecture according to claim 8, further comprising a touch screen electrically connected to the collection aggregation switch.
10. The experimental apparatus for building an industrial star-based ethernet network according to claim 1, wherein the core switch has two parts and is connected to each other, and the core layer is a dual star-based industrial ethernet network.
CN202110270628.3A 2021-03-12 2021-03-12 Experimental method and device for establishing Ethernet based on industrial star-shaped architecture Pending CN112887183A (en)

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