Industrial network system of automobile bearing intelligent workshop

Abstract

The invention discloses an industrial network system of an automobile bearing intelligent workshop, and relates to the technical field of industrial automation. The method comprises the following steps: firstly, carrying out overall layout planning on an intelligent workshop of an automobile bearing, dividing the intelligent workshop into a control center and two automobile bearing production lines, and secondly, analyzing the overall layout of the intelligent workshop and an industrial network architecture, and drawing up three schemes to pass through functions respectively; according to the invention, the redundancy, the self-healing performance, the stability and the safety of the industrial network system of the automobile bearing intelligent workshop can be improved. The wiring amount of an actual intelligent workshop can be reduced, and disorder caused by excessive wiring is avoided. And the production efficiency and the product percent of pass of the whole production system can be improved, the performance of the intelligent workshop network is improved, and the labor cost and the workshop network bandwidth resource consumption are reduced. And meanwhile, the security of the intelligent workshop data information and the industrial network system is also improved, the occurrence of network faults is reduced, and subsequent workers can conveniently maintain the industrial network system.

Description

Technical Field

[0001] The invention relates to the technical field of industrial automation, and in particular to an industrial network system for an automobile bearing intelligent workshop. Background Art

[0002] It is somewhat difficult for the current production workshops to achieve full intelligence. Sometimes, this is due to the problems of messy and numerous workshop layouts and wiring, as well as the fact that the initial design did not take into account the subsequent equipment expansion and left a certain amount of network space and IP planning, and did not consider the security of the workshop equipment and production network system.

[0003] Existing workshops are unable to fully collect, monitor, and protect production data, and to achieve stable and safe operation of smart workshops through existing technologies. They do not even isolate the control center network from the production network. When network problems such as communication line failure, hardware failure, and network storm occur, complex and difficult-to-maintain network failures will occur. At the same time, when the layout design of the workshop is unreasonable, choosing traditional wired connections may not only affect each other's communication, but also cause network transmission delays and other failures and a series of other problems. In response to the above problems, the inventor proposes an industrial network system for automotive bearing smart workshops to solve the above problems. Summary of the invention

[0004] In order to solve the problem that when the workshop layout design is unreasonable, choosing traditional wired connection may not only affect each other's communication but also cause network transmission delay and other failures and a series of other problems; the purpose of the present invention is to provide an industrial network system for an automobile bearing intelligent workshop.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: an industrial network system for an automobile bearing intelligent workshop, comprising the following steps:

[0006] S1: First, we plan the overall layout of the smart workshop for automobile bearings, which is divided into a control center and two production lines for automobile bearings.

[0007] S2: Secondly, the overall layout of the smart workshop and the industrial network architecture are analyzed and three solutions are proposed. The three solutions are analyzed from the three perspectives of function, economy and network system requirements. Finally, one of the solutions is selected as the industrial network system of the smart workshop.

[0008] S3: Analyze the three levels of the industrial network system again. For the network layer, analyze UDP and TCP communication protocols, industrial network technology, and the models and characteristics of three-layer switches, two-layer switches, firewall security modules, wireless modules, and cloud platform servers. At the same time, use TCP communication protocols, software, hardware, network technology, IP address planning, and access security strategies to design the network system of this layer.

[0009] S4: Finally, the TP-LINK device is used to build an industrial network system and perform simulated communication tests through industrial network software to verify whether the network requirements of the smart workshop are met.

[0010] Preferably, the control center includes an engineer station and a cloud platform server, and each production line includes four process units, and each process unit includes a PLC controller to realize production control.

[0011] Preferably, the industrial network system of the smart workshop is divided into a network layer, an edge layer, and a device layer, and the network is divided into a control center network and an automobile bearing production line network.

[0012] Preferably, the industrial network technology module includes redundancy, VLAN, access control list, firewall, and VPN technology.

[0013] Preferably, the selection and characteristics of the industrial edge gateway are analyzed for the edge layer, and the network system design of the edge layer is performed through the planning of IP addresses, VLAN areas and edge gateway software A-XBOX.

[0014] Preferably, the PROFINET and Modbus-RTU communication protocols are analyzed for the device layer, the master station PLC controller is selected and the selection reasons are analyzed by comparing the controller series, the network IP and VLAN area planning are utilized, and the collection and transmission of data information are realized through S7 communication and Modbus-RTU communication.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can network and control the entire workshop by utilizing the industrial network to realize the control of the engineer station of the upper control center and remotely monitor the production data information of the lower equipment and the environmental data on site;

[0017] 2. The present invention can improve the self-healing, security and stability of the entire smart workshop through redundancy, VLAN, firewall and access list control technology, and can solve the problem of data information being able to continue to be transmitted when the transmission link is disconnected due to damage to the equipment or the connection line. Dividing VLAN areas can isolate areas in the network architecture and solve the network storm problem;

[0018] 3. The present invention can identify the identity of the visitor and check whether the visitor has access permission through the firewall and access control list, and can deny external unknown IP access to the internal equipment of the smart workshop, and can resist malicious external attacks to stabilize the production network of the smart workshop and prevent network, equipment and production failures;

[0019] 4. The present invention can solve the problem of unstable transmission caused by long wired connection lines by utilizing the high-speed transmission of wireless communication and the characteristics of ignoring terrain, and realize long-distance high-speed and relatively stable data information transmission through wireless transmission;

[0020] 5. In the present invention, an encrypted channel is established through the VPN function to achieve remote access, which solves the problem that devices other than the engineer station can also be remotely accessed through the VPN encrypted channel, and can monitor the operation of the workshop and remotely maintain the internal network and equipment of the smart workshop.

[0021] 6. The present invention can improve the redundancy, self-healing, stability and security of the industrial network system of the automobile bearing intelligent workshop. It can reduce the amount of wiring in the actual intelligent workshop and avoid excessive wiring clutter. It can also improve the production efficiency and product qualification rate of the entire production system, improve the performance of the intelligent workshop network, reduce labor costs and workshop network bandwidth resource consumption. At the same time, it also improves the security of intelligent workshop data information and industrial network systems, reduces the occurrence of network failures, and facilitates subsequent staff to maintain the industrial network system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The figure shows the network solution selection and IP planning design of the smart workshop. The fiber optic MRP redundant ring network composed of three three-layer switches in the network layer is set up for the internal network of the control center. The edge gateway, security module, engineer station, cloud platform server, wireless module, and master station 1511PLC are all in the control center network. The equipment layer is the network system of the two production lines, and each production line has a schematic diagram of the slave station PLC in the four process units connected by the two-layer switch.

[0024] Figure 2The following is the design of the cloud platform monitoring data screen of the engineer station, which can monitor the electric meter and environmental data, including voltage, current, frequency, active power, reactive power, power factor, atmospheric pressure, carbon dioxide, noise, humidity, and temperature. It monitors the production data of automobile bearings, including the number of produced bearings, the number of qualified bearings, the number of unqualified bearings, and the schematic diagram of the production line operation status.

[0025] Figure 3 This is a monitoring screen of the actual environment and smart meter data. The data is collected by the smart meter and environmental sensors. The data is directly collected through the main station 1511PLC, and then the main station PLC converts, analyzes and processes the collected data through the internally written program. The converted data is then transmitted to the schematic diagram of the edge gateway.

[0026] Figure 4 This is a schematic diagram of the data monitoring screen for the number of production bearings, the number of qualified bearings, the number of unqualified bearings, and the data when the production line is in the startup and running state, where the data is transmitted from the lower PLC to the master PLC and then transmitted to the cloud platform server through the edge gateway. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example: Figure 1-4 As shown, the present invention provides a technical solution: an industrial network system for an automobile bearing intelligent workshop, comprising the following steps:

[0029] S1: First, we plan the overall layout of the smart workshop for automobile bearings, which is divided into a control center and two production lines for automobile bearings.

[0030] S2: Secondly, the overall layout of the smart workshop and the industrial network architecture are analyzed and three solutions are proposed. The three solutions are analyzed from the three perspectives of function, economy and network system requirements. Finally, one of the solutions is selected as the industrial network system of the smart workshop.

[0031] S3: Analyze the three levels of the industrial network system again. For the network layer, analyze UDP and TCP communication protocols, industrial network technology, and the models and characteristics of three-layer switches, two-layer switches, firewall security modules, wireless modules, and cloud platform servers. At the same time, use TCP communication protocols, software, hardware, network technology, IP address planning, and access security strategies to design the network system of this layer.

[0032] S4: Finally, the TP-LINK device is used to build an industrial network system and perform simulated communication tests through industrial network software to verify whether the network requirements of the smart workshop are met.

[0033] The control center includes an engineer station and a cloud platform server, and each production line contains four process units, each of which contains a PLC controller to achieve production control.

[0034] The industrial network system of the smart workshop is divided into network layer, edge layer, and equipment layer, and the network is divided into control center network and automobile bearing production line network.

[0035] Industrial network technology modules include redundancy, VLAN, access control list, firewall, and VPN technology.

[0036] For the edge layer, the selection and characteristics of industrial-grade edge gateways are analyzed, and the network system design of the edge layer is carried out through the planning of IP addresses, VLAN areas and edge gateway software A-XBOX.

[0037] For the device layer, the PROFINET and Modbus-RTU communication protocols were analyzed, the master station PLC controller was selected and the reasons for selection were analyzed by comparing the controller series, the network IP and VLAN area planning were used, and the collection and transmission of data information were realized through S7 communication and Modbus-RTU communication.

[0038] Working principle: In this invention, IP addresses in the VLAN area that are not allowed by the firewall cannot access the smart workshop network system, and only those allowed by the firewall rules can access it. Under the rules allowed by the firewall, the smart workshop network system can also be accessed remotely through the VPN encrypted channel;

[0039] Under the rules of the firewall and access control list, different VLAN segments can communicate with each other through the routing function of the three-layer switch;

[0040] In an MRP redundant ring network, if a transmission link is disconnected or a layer 3 switch is damaged, the transmission communication can be restored through the redundancy function. In the industrial network system of a smart workshop, when a layer 3 switch is damaged, the network system can achieve routing communication through the remaining layer 3 switches;

[0041] Through wireless communication built with wireless modules, edge gateway software A-XBOX, and cloud platform server, data information transmission between PLC and cloud platform server is established using software A-XBOX, so that the engineer station of the control center can remotely monitor and control the production system of the production line. By utilizing the industrial network, the entire workshop can be networked and controlled to enable the engineer station of the upper control center to control and remotely monitor the production data information of the lower equipment and the on-site environmental data. Through redundancy, VLAN, firewall, and access list control technology, the self-healing, security, and stability of the entire smart workshop can be improved, and the problem of continued data transmission can be solved when the transmission link is disconnected due to damage to the equipment or connecting lines. Dividing VLAN areas can isolate areas in the network architecture and solve the problem of network storms. Firewalls and access control lists can identify the identity of visitors and query whether they have access permission. They can deny external unknown IPs from accessing internal equipment in smart workshops, resist malicious external attacks, and thus stabilize the production network of smart workshops, prevent network, equipment, and production failures. The high-speed transmission of wireless communications and the characteristics of ignoring terrain can solve the problem of unstable transmission caused by long wired cables. Wireless transmission can achieve long-distance, high-speed, and relatively stable data information transmission. The VPN function can be used to establish an encrypted channel for remote access, solving the problem that devices other than the engineer station can also be remotely accessed through the VPN encrypted channel. The operation of the workshop can be monitored and the internal network and equipment of the smart workshop can be remotely maintained.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An industrial network system for an automobile bearing intelligent workshop, characterized in that: The following steps are involved: S1: First, we plan the overall layout of the smart workshop for automobile bearings, which is divided into a control center and two production lines for automobile bearings. S2: Secondly, the overall layout of the smart workshop and the industrial network architecture are analyzed and three solutions are proposed. The three solutions are analyzed from the three perspectives of function, economy and network system requirements. Finally, one of the solutions is selected as the industrial network system of the smart workshop. S3: Analyze the three levels of the industrial network system again. For the network layer, analyze UDP and TCP communication protocols, industrial network technology, and the models and characteristics of three-layer switches, two-layer switches, firewall security modules, wireless modules, and cloud platform servers. At the same time, use TCP communication protocols, software, hardware, network technology, IP address planning, and access security strategies to design the network system of this layer. S4: Finally, the TP-LINK device is used to build an industrial network system and perform simulated communication tests through industrial network software to verify whether the network requirements of the smart workshop are met.

2. The industrial network system of an automobile bearing intelligent workshop according to claim 1, characterized in that: The control center includes an engineer station and a cloud platform server, and each production line includes four process units, each of which includes a PLC controller to realize production control.

3. The industrial network system of an automobile bearing intelligent workshop according to claim 1, characterized in that: The industrial network system of the smart workshop is divided into a network layer, an edge layer, and a device layer, and the network is divided into a control center network and an automobile bearing production line network.

4. The industrial network system of an automobile bearing intelligent workshop according to claim 1, characterized in that: The industrial network technology modules include redundancy, VLAN, access control list, firewall, and VPN technology.

5. The industrial network system of an automobile bearing intelligent workshop according to claim 1, characterized in that: For the edge layer, the selection and characteristics of the industrial-grade edge gateway are analyzed, and the network system design of the edge layer is carried out through the planning of IP addresses, VLAN areas and the edge gateway software A-XBOX.

6. The industrial network system of an automobile bearing intelligent workshop according to claim 1, characterized in that: For the device layer, the PROFINET and Modbus-RTU communication protocols were analyzed, the master station PLC controller was selected and the reasons for selection were analyzed by comparing the controller series, the network IP and VLAN area planning were used, and the collection and transmission of data information were realized through S7 communication and Modbus-RTU communication.

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