CN111083046A - 5G-Profibus-DP gateway for industrial field - Google Patents
5G-Profibus-DP gateway for industrial field Download PDFInfo
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- CN111083046A CN111083046A CN201911273293.XA CN201911273293A CN111083046A CN 111083046 A CN111083046 A CN 111083046A CN 201911273293 A CN201911273293 A CN 201911273293A CN 111083046 A CN111083046 A CN 111083046A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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Abstract
The invention discloses a 5G-Profibus-DP gateway oriented to an industrial field, which mainly comprises an FPGA processor module, an RS485 interface circuit, a UART interface circuit, a 5G module and an external memory module. The gateway of the invention applies the 5G technology to the industrial field and can realize the interconnection and intercommunication of two heterogeneous networks of a 5G network and a Profibus-DP bus. The invention aims at application scenes that 5G and Profibus-DP buses need to be interconnected and intercommunicated, such as: and remotely operating and monitoring the Profibus-DP bus equipment by using the 5G terminal. The invention can solve the problems of complicated wiring and high cost of a wired network, can ensure the real-time performance and reliability of a communication process, and has strong market demand and wide application prospect in the industrial field.
Description
Technical Field
The invention belongs to the field of industrial internet and cellular communication, relates to an embedded gateway oriented to an industrial field, and particularly relates to an embedded gateway for realizing interconnection and intercommunication of 5G and Profibus-DP.
Background
With the arrival of the world of everything interconnection, the influence of the internet on the industry is increasingly prominent, and the internet economy has formally entered the second half and entered the industrial internet from the consumption internet. The industrial internet has the requirement of network coverage of the whole process and no dead angle of industrial production, so that the deployment of the 5G technology in a factory becomes necessary. 5G is a new generation cellular communication technology, which supports peak rates of 10Gbps, end-to-end time delay of millisecond level, connection density of one million per square kilometer and mobility of more than 500Km per hour. Under the vigorous development of the 5G technology, the 5G technology is utilized to effectively monitor and control the industrial production process, and the field device is remotely controlled and maintained, which becomes a research hotspot.
Profibus is one of the field bus standards which are commonly used internationally at present, and becomes the most important and widely applied field bus standard by the unique technical characteristics, strict certification standards, open standards, support of a plurality of manufacturers and continuously developed application rules. It consists of three compatible parts, namely Profibus-DP (DecentralizedPeriphery), Profibus-PA (Process Automation), Profibus-FMS (Fieldbus MessageSpecification). The Profibus-DP is an optimized, high-speed, inexpensive communication link designed specifically for communication between automation control systems and device-level decentralized I/O.
The invention discloses an industrial field-oriented 5G-Profibus-DP gateway, which aims at the application scene of interconnection and intercommunication of a 5G and a Profibus-DP bus (for example, Profibus-DP bus equipment is remotely operated and monitored by using a 5G terminal, and a central controller on the Profibus-DP bus remotely controls an automatic transport vehicle through a 5G network).
Disclosure of Invention
The invention aims to provide an industrial field-oriented embedded gateway, which is used for solving the protocol conversion problem of two heterogeneous networks, namely a 5G network and a Profibus-DP bus, and is used for realizing interconnection and intercommunication of the 5G network and the Profibus-DP bus.
In order to realize the purpose of the invention, the technical scheme is as follows:
an embedded gateway facing an industrial field comprises the following modules: the system comprises an FPGA processor module, an RS485 interface circuit, a UART interface circuit, a 5G module and an external memory module. The FPGA processor module is connected with a Profibus-DP bus of an industrial field through the RS485 interface circuit, and the FPGA processor module is connected with the 5G module through the UART interface circuit. The external memory module is electrically connected with the FPGA module.
Furthermore, the FPGA processor module adopts a Cyclone IV series EP4CE30F23C8 chip as a main control chip of the whole gateway, and is responsible for receiving and sending data streams and control instructions and for protocol conversion between two heterogeneous networks of 5G and Profibus-DP. The FPGA processor module adopts 1GB DDR3RAM as an internal memory and is responsible for storing data and programs.
Furthermore, the FPGA processor module comprises a peripheral power circuit module, a reset circuit module and a JTAG module. The power supply circuit module is responsible for providing voltages required by normal operation of various logic circuits and normal operation of I/O pins in the FPGA processor module; the reset circuit module is responsible for restoring the FPGA processor module to an initial state; the JTAG module is a download configuration circuit and is mainly used for program download debugging and FLASH programming.
Further, the RS485 interface circuit is composed of a MAX485 chip and an RS485 interface, the MAX485 chip is responsible for level conversion between TTL level and RS485 level, and the RS485 interface is used for connecting a Profibus-DP bus.
Further, the UART interface circuit is composed of a USB/RS232 bidirectional conversion chip PL2303SA and is responsible for connecting the FPGA processor module and the 5G module.
Further, the 5G module adopts a 5G industrial module MH5000 of Hua Shi corporation, the MH5000 module carries a Hua Shi 5G communication chip Barlong 5000, the downlink speed can reach 2Gbps, the uplink speed can reach 230Mbps, a non-independent and independent networking mode is supported, and the module can be matched with a Chinese 5G network.
Further, the external memory module consists of a FLASH memory with the model number of W25Q128BV and an EEPROM memory with the model number of 24LC04, and is used for storing system files and programs.
Compared with the prior art, the invention has the beneficial effects that:
(1) the existing Profibus-DP bus gateway mainly solves the problem of interconnection and intercommunication between a Profibus-DP bus and traditional wireless networks such as Wi-Fi and 4G. However, Wi-Fi and 4G have defects in transmission rate, reliability, mobility and the like, and are not suitable for industrial occasions with high requirements on network real-time such as remote operation and monitoring of industrial field equipment, and the corresponding gateway equipment is also not suitable for industrial fields with high requirements on network real-time.
(2) The invention provides a gateway capable of realizing interconnection and intercommunication of a Profibus-DP bus and 5G, and key performance indexes of the 5G, such as low time delay, high reliability and the like, so that the gateway can be widely applied to the industrial field, the application of the 5G in the industrial field becomes a research hotspot at present, and the corresponding gateway of the invention has strong market demand and wide application prospect in the industrial field.
(3) The invention can be used as the core equipment of a system for remotely operating and monitoring Profibus-DP bus equipment, not only can solve the problems of complicated wired network wiring and high cost, but also can ensure the real-time performance and reliability of the communication process. The invention applies the 5G technology to the industrial network, provides a scheme for the application of 5G in the industrial field, and accords with the inevitable trend of industrialization, informatization and industrial internet development.
Drawings
In the drawings:
FIG. 1 is a block diagram of the hardware architecture of the present invention;
FIG. 2 is a schematic diagram of the Profibus-DP protocol conversion process of the present invention to the 5G protocol;
fig. 3 is a schematic structural diagram of a system for realizing remote monitoring of industrial field devices and remote control of an automatic transport vehicle based on the invention.
Wherein: 1. an FPGA processor; 2. DDR3RAM internal memory; 3. an RS485 interface circuit; 4. a UART interface circuit; 5. a 5G module; 6. FLASH; 7. an EEPROM; 8. a power circuit module; 9. a reset circuit module; 10. a JTAG module; 11. a 5G network; 12. a Profibus-DP bus; 13. a master station; 14. a slave station; 15. a gateway device; 16. 5G terminal; 17. an automatic transport vehicle.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description set forth herein is intended only to illustrate and explain the present invention and is not intended to limit the present invention.
Fig. 1 is a block diagram of the hardware configuration of the present invention. The hardware of the invention mainly comprises an FPGA processor 1, a DDR3RAM internal memory 2, an RS485 interface circuit 3, a UART interface circuit 4, a 5G module 5, an external memory module (FLASH 6 and EEPROM7), a power circuit module 8, a reset circuit module 9 and a JTAG module 10.
The DDR3RAM internal memory 2, the RS485 interface circuit 3, the UART interface circuits 4 and 5G module 5, the external memory module (FLASH 6 and EEPROM7), the power circuit module 8, the reset circuit module 9 and the JTAG module 10 are all electrically connected with the FPGA processor 1.
The RS485 interface circuit 3 is used for connecting the gateway equipment 15 and the Profibus-DP bus 12; the UART interface circuit 4 is used for connecting the FPGA processor 1 with the 5G module 5, and the 5G module 5 can be matched with a 5G network 11 and is used for connecting a gateway device 15 and the 5G network 11; the external memory module consists of FLASH 6 and EEPROM7 and is responsible for storing system configuration files and system programs; the power circuit module 8 provides the voltage required by the gateway to work normally; the reset circuit module 9 is responsible for initializing the FPGA processor 1; the JTAG module 10 is used to download a debugging program.
The FPGA processor 1 is used as a core module of the gateway of the invention and is responsible for receiving and sending data streams and control instructions, and completes protocol conversion between two heterogeneous networks of a Profibus-DP bus 12 and a 5G network 11 under the cooperation of other modules, thereby realizing interconnection and intercommunication of the two heterogeneous networks.
FIG. 2 is a schematic diagram of a protocol conversion process for converting Profibus-DP protocol to 5G protocol according to the present invention. As shown in FIG. 2, the Profibus-DP protocol includes a physical layer, a numberThe data link layer and the user layer, and the 5G protocol comprises a physical layer, a data link layer, a network layer, a transmission layer and an application layer. Those skilled in the art will appreciate that the 5G protocol and the Profibus-DP protocol both have a physical layer and a data link layer, but the specific structures of the protocols are different. H in FIG. 23、HAThe headers of the Profibus-DP user layer and the 5G application layer, respectively, are indicated, the headers consisting of some of the necessary information of the layers. HT、HNIs the header of the 5G transport layer, the network layer, H2、T2Is the head and tail of the Profibus-DP data link layer, HL、TLAre the head and tail of the 5G data link layer.
The essence of the protocol conversion process is: and the gateway analyzes the Profibus-DP protocol data packet layer by layer to obtain a data part, and then encapsulates the obtained data part layer by layer according to a 5G protocol structure to obtain a 5G protocol data packet.
The specific process is as follows: the RS485 interface circuit 3 of the gateway converts the received electric signal into binary bit stream, then delivers the binary bit stream to the physical layer, the physical layer extracts frames according to the head and the tail of the data link layer and delivers the frames to the data link layer, the data link layer strips the head and the tail of the physical layer and then delivers the frames upwards to the user layer for continuous analysis until the data part is finally obtained. The gateway adds the head to the obtained data part according to the 5G application layer structure, then transfers the data part to the transport layer, and then adds the head of the layer before transferring to the next layer. The data link layer adds the head and tail of the data link layer to the data to be transmitted to the physical layer, the physical layer transmits the data to the 5G module 5 through the UART interface circuit 4, and finally the 5G module 5 transmits the data to the 5G network 11.
The process by which the gateway converts the 5G protocol to the Profibus-DP protocol is the reverse of the above process.
Fig. 3 is a schematic structural diagram of a system for realizing remote monitoring of industrial field devices and remote control of an automatic transport vehicle based on the invention. The Profibus-DP bus system consists of a Profibus-DP bus 12 and devices connected to the bus, which are divided into a master station 13 and a slave station 14. The master station 13 is a central controller of the system, and can actively and periodically exchange data with the configured slave station 14; the slave station 14 is an industrial field device, such as a sensor, an actuator, or the like, that performs input information acquisition and output information transmission.
The gateway device 15 is responsible for protocol conversion between the Profibus-DP protocol and the 5G protocol, and may implement interconnection between the Profibus-DP bus 12 and the 5G network 11. A technician can read the industrial field device data transmitted from the 5G network 11 through the 5G terminal 16, so that the industrial field device can be remotely monitored in real time; the main station 13 sends data and control instructions to the automatic transport vehicle 17 through the 5G network 11, so that the purpose of remotely controlling the automatic transport vehicle 17 in real time is achieved.
The specific process for realizing remote monitoring of the industrial field equipment based on the invention is as follows:
1) the 5G terminal 16 accesses the 5G network 11 and establishes communication connection with the gateway device 15;
2) the 5G terminal 16 sends an instruction (5G protocol structure) to the gateway device 15 via the 5G network 11, requesting a review of the operating parameters of the field devices of the Profibus-DP bus system;
3) the gateway equipment 15 carries out protocol conversion after receiving the instruction, and converts the instruction into data of a Profibus-DP protocol structure;
4) after the protocol conversion is complete, the gateway device 15 sends an instruction (already in the Profibus-DP protocol configuration) to the Profibus-DP bus 12;
5) the master station 13 receives the instructions and collects the operating parameters of the slave stations 14 (industrial field devices);
6) the master station 13 sends the collected field device operating parameters (Profibus-DP protocol structure) to the gateway device 15;
7) the gateway device 15 performs protocol conversion after receiving the device operation parameters, and converts the device operation parameters into data of a 5G protocol structure;
8) the gateway device 15 sends the device operation parameters (already in the 5G protocol structure) to the 5G network 11 and then to the 5G terminal 16, and the relevant technicians can view the field device operation parameters through the 5G terminal 16.
The above process is a specific process for realizing remote monitoring of the industrial field device based on the invention.
Similarly, the process of remotely controlling the automatic transport vehicle 17 by the 5G network 11 by the master station 13 sending a control command through the gateway device 15 is similar to the above process. The gateway of the invention is used as core equipment to realize the protocol conversion between the 5G protocol and the Profibus-DP protocol, thereby realizing the interconnection and intercommunication of the two heterogeneous networks.
Claims (7)
1. The utility model provides a 5G-Profibus-DP gateway towards industrial field which characterized in that: the system comprises an FPGA processor module, an RS485 interface circuit, a UART interface circuit, a 5G module and an external memory module;
the FPGA processor module is connected with a Profibus-DP bus of an industrial field through the RS485 interface circuit; the FPGA processor module is connected with the 5G module through the UART interface circuit; the external memory module is electrically connected with the FPGA module.
2. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the FPGA processor module adopts an EP4CE30F23C8 chip of Cyclone IV series.
3. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the FPGA processor module adopts a 1GB DDR3RAM as an internal memory and is responsible for storing data and programs; the FPGA processor module comprises a peripheral power circuit module, a reset circuit module and a JTAG module.
4. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the RS485 interface circuit is composed of a MAX485 chip and an RS485 interface, the MAX485 chip is responsible for level conversion between TTL level and RS485 level, and the RS485 interface is used for connecting a Profibus-DP bus.
5. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the UART interface circuit consists of a USB/RS232 bidirectional conversion chip PL2303SA and is responsible for connecting the FPGA processor module and the 5G module.
6. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the 5G module adopts a 5G industrial module MH5000 of Hua Shi company, and the MH5000 module carries a Hua Shi 5G communication chip Baron 5000, and can be matched with a Chinese 5G network.
7. An industrial field oriented 5G-Profibus-DP gateway as claimed in claim 1, wherein: the external memory module consists of a FLASH memory with the model number of W25Q128BV and an EEPROM memory with the model number of 24LC04 and is used for storing system files and programs.
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| CN201911273293.XA CN111083046A (en) | 2019-12-12 | 2019-12-12 | 5G-Profibus-DP gateway for industrial field |
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| CN201911273293.XA CN111083046A (en) | 2019-12-12 | 2019-12-12 | 5G-Profibus-DP gateway for industrial field |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897296A (en) * | 2020-07-08 | 2020-11-06 | 中国电子科技集团公司第四十一研究所 | Intelligent management system for industrial production line based on 5G communication |
| CN111901233A (en) * | 2020-09-18 | 2020-11-06 | 江西省智能产业技术创新研究院 | Industrial relay gateway and control method thereof |
| CN111901363A (en) * | 2020-08-12 | 2020-11-06 | 吉林大学 | 5G-Profibus-DP data encryption transmission device based on FPGA |
| CN112422416A (en) * | 2020-10-12 | 2021-02-26 | 江西山水光电科技股份有限公司 | Gateway apparatus and control method thereof |
| CN113741360A (en) * | 2021-08-09 | 2021-12-03 | 北京和利时控制技术有限公司 | Industrial control gateway, system, control method and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201984819U (en) * | 2011-01-18 | 2011-09-21 | 刘天键 | Multifunctional vehicle-mounted multimedia system |
| CN105553838A (en) * | 2015-12-16 | 2016-05-04 | 吉林大学 | ARM-based embedded gateway accessing PROFIBUS-DP to Wi-Fi and communication method thereof |
| CN107124358A (en) * | 2017-07-11 | 2017-09-01 | 吉林大学 | A kind of 4G PROFIBUS embedded system gateway devices based on FPGA |
| CN207133937U (en) * | 2017-07-26 | 2018-03-23 | 南京信息工程大学 | A kind of forest fire early-warning system based on FPGA and unmanned plane |
| CN109995968A (en) * | 2017-12-29 | 2019-07-09 | 天津益华微电子有限公司 | A kind of playing control system |
-
2019
- 2019-12-12 CN CN201911273293.XA patent/CN111083046A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201984819U (en) * | 2011-01-18 | 2011-09-21 | 刘天键 | Multifunctional vehicle-mounted multimedia system |
| CN105553838A (en) * | 2015-12-16 | 2016-05-04 | 吉林大学 | ARM-based embedded gateway accessing PROFIBUS-DP to Wi-Fi and communication method thereof |
| CN107124358A (en) * | 2017-07-11 | 2017-09-01 | 吉林大学 | A kind of 4G PROFIBUS embedded system gateway devices based on FPGA |
| CN207133937U (en) * | 2017-07-26 | 2018-03-23 | 南京信息工程大学 | A kind of forest fire early-warning system based on FPGA and unmanned plane |
| CN109995968A (en) * | 2017-12-29 | 2019-07-09 | 天津益华微电子有限公司 | A kind of playing control system |
Non-Patent Citations (1)
| Title |
|---|
| 厦门计讯: "5G工业网关功能及应用场景", 《百度网页，HTTPS://WWW.SOHU.COM/A/343041144_100125590》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897296A (en) * | 2020-07-08 | 2020-11-06 | 中国电子科技集团公司第四十一研究所 | Intelligent management system for industrial production line based on 5G communication |
| CN111901363A (en) * | 2020-08-12 | 2020-11-06 | 吉林大学 | 5G-Profibus-DP data encryption transmission device based on FPGA |
| CN111901363B (en) * | 2020-08-12 | 2022-05-17 | 吉林大学 | 5G-Profibus-DP data encryption transmission device based on FPGA |
| CN111901233A (en) * | 2020-09-18 | 2020-11-06 | 江西省智能产业技术创新研究院 | Industrial relay gateway and control method thereof |
| CN112422416A (en) * | 2020-10-12 | 2021-02-26 | 江西山水光电科技股份有限公司 | Gateway apparatus and control method thereof |
| CN113741360A (en) * | 2021-08-09 | 2021-12-03 | 北京和利时控制技术有限公司 | Industrial control gateway, system, control method and storage medium |
| CN113741360B (en) * | 2021-08-09 | 2023-09-29 | 北京和利时控制技术有限公司 | Industrial control gateway, system, control method and storage medium |
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Application publication date: 20200428 |