CN109739124A - Multi-bus interface data handling utility system - Google Patents
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Abstract
The invention discloses a kind of multi-bus interface data handling utility systems, for the problem that a variety of bus communication data acquisition in current industrial network is difficult, the data handling utility system that one kind is reported based on the multibus access of field programmable gate array (FPGA), multipath is proposed.The data handling utility system realizes serial communication using FPGA as hardware platform, based on FPGA building serial port unit module, realizes that NB-IoT, LTE/LTE-A and UDP/IP data upload on (SuSE) Linux OS.By the design of the functions such as the multiple task management of operating system and the Multi-serial port management of FPGA, parallel processing advantage, the operation that multibus access, multipath report is realized.The invention realizes the analysis of multibus data, handles and report in the case where not changing existing environment of industrial network, can real-time query related data, and then improve the reliability and stability of industrial equipment.
Description
Technical field
The present invention relates to control engineering field more particularly to multi-bus interface data handling utility systems.
Background technique
With the development of computer network and the rise of Internet of Things, smart machine access network is had become into a kind of trend,
To realize the shared and long-range management of data.But smart machine uses different types of bus or network mostly at present.
By taking relatively conventional industrial network as an example, main contents include computer network architectures, local area network technology, work
Industrial Ethernet, CAN bus technology, DeviceNet fieldbus, DeviceNet design of node and networking, the scene ControlNet
Bus, industrial network and its application etc..Only ModBus agreement just has following three communication mode: 1, asynchronous serial transmission at present
(RS-232/ 422/485/), corresponding communication pattern is MODBUS RTU or MODBUS ASCII.2, Ethernet is corresponding logical
Letter mode is MODBUS TCP.3, high speed token passing network, corresponding communication pattern are Modbus PLUS.So current work
A variety of bus communication data in industry network acquire difficulty, and the reliability and stability of industrial equipment are not high.
Summary of the invention
Goal of the invention: the invention discloses a kind of multi-bus interface data handling utility system, which is based on scene
The data handling utility designing system that the multibus access of programmable gate array (FPGA), multipath report.It can be realized mostly total
The operation that line access, multipath report.The invention realizes multibus data point in the case where not changing existing environment of industrial network
Analyse, handle and report, can real-time query related data, and then improve the reliability and stability of industrial equipment.
Technical solution: a kind of multi-bus interface data handling utility system, including input interface module, data processing module
And output interface module；It is characterized by: input interface module is connected with data processing module, the information received is passed to
Data processing module, data processing module will be sent to fortune by output interface module after data decoding, analysis, processing, coding
Tie up cloud platform；The data processing module realizes that serial ports is logical using FPGA as hardware platform, based on FPGA building serial port unit module
Letter, realization is decoded data, analyzes, handling, encoding on (SuSE) Linux OS, and the data processing module uses
FIFO memory carries out data buffer storage；And the data after coding are sent to O&M cloud platform by output interface module.
Specifically, output interface module includes: NB-IoT module, LTE/LTE-A module and RJ45 network module.It is described
RJ45 network module uses gigabit network technology.The RJ45 network module passes through UDP/IP protocol realization data and O&M cloud platform
Communication.Input interface module is connected with situ industrial equipment, for obtaining the work state information of industrial equipment in real time；Input
Interface module includes Industrial Ethernet, DeviceNet fieldbus, Modbus RTU bus, at input interface module and data
It manages module to be connected, the information received is passed into data processing module.Output interface module in advance by communicating pair in advance about
Fixed some Information encapsulations are added in the header of uncorrected data and send in IP packet, and sending module is in system detection to number
According to starting to work after effective marker.
FPGA hardware platform is cached after receiving data by the FIFO memory, after FPGA hardware platform framing
Data are transmitted by super Category-5 twisted pair.
In view of input interface module needs more communication interface, when hardware design, should select combined chip, envelope as far as possible
Compatible chip module is filled, therefore input interface module hardware selects the chip module of combined chip or encapsulation compatibility.
The utility model has the advantages that input interface module described in 1, multi-bus interface data handling utility system of the invention includes
A variety of industry such as Industrial Ethernet (Ethernet), DeviceNet fieldbus, Modbus RTU bus (RS485/RS232)
Bus interface and external digital signal with more polymorphic type equipment, it can be achieved that connect, and handle the data of acquisition simultaneously；2, this hair
Data processing module described in bright multi-bus interface data handling utility system is based on FPGA structure using FPGA as hardware platform
It builds serial port unit module and realizes serial communication, realized on (SuSE) Linux OS and data are decoded, are analyzed, are handled, are compiled
Data after coding are simultaneously sent to output interface module by LTE/LTE-A and UDP/IP by code, NB-IoT.3, of the invention
Multi-bus interface data handling utility design described in output interface module include NB-IoT module, LTE/LTE-A module and
RJ45 network module carries out data forwarding by automatically selecting fastest interface server, to reach data acceleration,
Network Packet Loss and network delay can be effectively reduced, and then improves the flexibility and stability of application design.
Detailed description of the invention
Fig. 1 is data processing system architecture diagram of the invention；
Fig. 2 is data handling utility designing system overall construction drawing of the invention；
Fig. 3 is clock domain locating for each module of the invention；
Fig. 4 is NB-IoT network data communication structure of the invention；
Fig. 5 is LTE/LTE-A network data communication structure of the invention.
Specific embodiment
It elaborates in the following with reference to the drawings and specific embodiments to technical solution of the present invention.
As shown in Figure 1, multi-bus interface data handling utility system in practical applications with industrial equipment and industrial machine
People's O&M cloud platform is connected, and concrete application is as follows:
The industrial equipments such as industrial equipment, including welding robot, cutting robot, transfer robot and PLC, industrial equipment
Itself operating state data is sent to multi-bus interface data handling utility system by different industrial bus；Multibus connects
Mouth data handling utility system, including input interface module, data processing module and output interface module, data handling utility are set
Meter obtains industrial equipment work state information by different industrial bus, and is decoded, analyzes, handles, encodes to data, most
The data after coding are passed into industrial robot O&M cloud platform by output interface module afterwards；Industrial robot O&M cloud is flat
Platform has long-distance on-line monitoring, the extraction of equipment fault feature, the separation of failure and estimation, the evaluation of failure reports and decision
Etc. functions, holding equipment soft fault warning function, by construct industrial network O&M cloud platform, can create big data processing in
The heart is offering customers service.
As shown in Fig. 2, multi-bus interface data handling utility system, comprising:
1) input interface module, input interface module are connected with situ industrial equipment, for obtaining industrial equipment in real time
Work state information, input interface module include Industrial Ethernet (Ethernet), DeviceNet fieldbus, Modbus
A variety of industrial bus interfaces such as RTU bus (RS485/RS232) and external digital signal, input interface module and data processing mould
Block is connected, and the information received is passed to data processing module；In view of input interface module needs more communication interface,
The chip module that should select combined chip, encapsulation compatible when hardware design as far as possible, for example, Asynchronous Serial Interface is in design Shi Buxuan
With isolated RS232+RS485 combined chip, because chip selection is more, dosage is more, causes to occupy many spaces, can select multiple
The interface chip that the RS232+RS485 of mould assembly is integrated, a compound chip are equivalent to mono- RS485 collection of a RS232+
At together, the space of plank is greatly saved；It is SP339EER1 using the compound chip selected in design；
2) data processing module, data processing module construct serial port unit module using FPGA as hardware platform, based on FPGA
It realizes serial communication, is realized on (SuSE) Linux OS and data are decoded, are analyzed, are handled, are encoded, and will be after coding
Data are sent to industrial robot O&M cloud platform by NB-IoT, LTE/LTE-A and UDP/IP；System uses Xilinx company
ISE14.7 software development, be designed using top-down method, write using Verilog HDL hardware description language
Each functional module；As shown in figure 3, data processing module specifically includes:
2.1) data receiver: after system receives lead code, receive destination-mac address and judge the address whether be
Preset MAC Address of uniting is consistent, receives remaining data information if consistent, carries out the processing of next step data；If inconsistent
Original state is then returned to, lead code to be received is waited；
2.2) data processing: data processing is to analyze received data, and extract valuable data and be uploaded to O&M cloud
Platform；
2.3) FIFO:FIFO is FIFO (First Input First Output) memory, and FIFO memory is one
The dual port buffer of first in, first out, i.e., first data first entered in it are moved out of, the input of one of memory
Mouthful, another mouthful is the delivery outlet of memory, to increase data transmission rate, processing mass data stream, matching with different transmission
Rate can effectively improve the transmission rate of system；
2.4) data are sent: data transmission is essentially identical with data receiver principle, and difference is that sending module increases group
The work of frame needs some Information encapsulations in advance arranging communicating pair in advance in IP packet, is added to the header of uncorrected data
In send, sending module is started to work after system detection to data effective marker.It, first will be according to by taking UDP/IP as an example
The requirement of IP header successively sends the header informations such as lead code, target MAC (Media Access Control) address, source MAC, version number's header length, connects
The data in the FIFO of reading are sent, finally retransmited after having sent total data CRC32 verification data.
As shown in figure 4, in the present embodiment, the working-flow of data processing module:
System judges by lead code and receives the data of acquisition, will remove the data buffer storage of frame head into a FIFO,
FPGA analyzes data, handle after be sent to O&M cloud platform and be further analyzed.
Working-flow is as follows:
A series of initial work is completed after step 1) system electrification, prepares the data for receiving acquisition；
The data of step 2) acquisition enter FIFO1 and carry out a caching, then pass to FPGA by FIFO1；
The receiving module of step 3) FPGA reads the data of acquisition from FIFO1, and is analyzed data, handled；
By treated, data check confirms step 4), and will do caching process in the FIFO2 of data deposit FPGA generation；
The sending module of step 5) FPGA takes out the data of caching from FIFO2, and does to the structure of data certain
Processing, while data are encoded, add relevant information；
Assembled data are flowed through NB-IoT, LTE/LTE-A, TCP/IP and pass to O&M cloud platform by step 6) FPGA.
3) output interface module, as shown in Fig. 2, output interface module include: NB-IoT module, LTE/LTE-A module and
RJ45 network module；
As shown in figure 4, in the present embodiment, NB-IoT network data communication specific structure is as follows:
NB-IoT module: NB-IoT is the emerging technology in one, the field IoT, supports low power consuming devices in the honeycomb of wide area network
Data connection, also referred to as low-power consumption wide area network (LPWAN).NB-IoT supports that stand-by time is long, higher to network connectivity requirements
The efficient connection of equipment.NB-IoT module selects SIM7000C module in this application system, and SIM7000C is based on high pass
MDM9206 platform development LTE CAT M1 (eMTC) and NB-IoT module, can support LTETDD/LTE-FDD/LTE/LTE-A/
The more a frequency ranges of EDGE, uplink and downlink data traffic peak value reaches 375kbps, and uses SMT encapsulation, performance is stable, appearance is small and exquisite,
Cost performance height, extremely low power dissipation characteristic.SIM7000C provides extensive external interface in the industry, provides greatly for the application of client
Convenient, wherein hardware interface includes UART, USB2.0, PCM etc., and software interface includes: TCP, HTTP, HTTPS, SMS etc..
NB-IoT network data communication uses four kinds of protocol modes, respectively transparent transmission, CoAP mode, protocol transparency mould
Formula and AT instruction mode.The design mainly selects CoAP instruction mode, CoAP agreement (Constrained ApplicaTIon
It Protocol) is agreement of the IETF exclusively for limited applications Environment Design, it is functionally similar with HTTP, but compare HTTP more light weight
Change and efficiently, is suitable for NB-IoT terminal.UE is directly led to IoT platform or M2M APP Server by CoAP agreement
Letter carries application layer data, and when M2M APP server supports CoAP agreement, business datum can be without IoT platform.
As shown in figure 5, in the present embodiment, LTE/LTE-A network data communication specific structure is as follows:
LTE/LTE-A module: LTE, which refers to, is not necessarily to that the LTE of WIiFi frequency range, LTE-A is authorized to refer to advanced LTE using 5GHz, occupies
Dedicated frequency range near 3G.The main distinction of the two technology is in the physical layer eated dishes without rice or wine.LTE system eats dishes without rice or wine uplink and downlink using pairs of
UHF band reception and send data, and lte-a system uplink and downlink is then transmitted on different time slots using identical frequency range, compared with
LTE-A duplex mode, LTE have the higher availability of frequency spectrum.LTE can provide the communication requirement in high-speed mobile, support multicast
And broadcasting stream, LTE band spreading degree is good, supports the time division multiple acess and CDMA frequency range of 1.4MHZ to 20MHZ.This application design
Middle LTE/LTE-A module selects SIM7600C module, and SIM7600C is the module of a SMT encapsulation, supports LTE-TDD, LTE-
The frequency ranges such as FDD, HSPA+, TD-SCDMA, EVDO and GSM, GPRS, EDGE, support LTE CAT4 (downstream rate 150Mbps),
Its performance is stablized, and appearance is small and exquisite, and cost performance is high, and the transmission of SMS and data information can be realized with low-power consumption.
LTE/LTE-A network data communication uses four kinds of protocol modes, respectively network transparent transmission mode, short message transparent transmission mould
Formula, HTTP mode, protocol transparency mode and AT instruction mode.This system mainly selects protocol transparency mode and AT instruction mode,
AT command set is the instruction sent from terminal device or data terminal equipment to terminal adapter or data circuit termination equipment.Often
An AT instruction can only be included in a AT order line；For from terminal device actively to the end PC report URC instruction or
Response response, also requires a line to be up to one, there is a plurality of instruction or response in a line for not allowing to report.
It as shown in table 1, is Cellular IoT rate distribution；
1 Cellular IoT rate distribution of table
Can according to the corresponding transmission mode of environmental selection of industry spot, and then improve the application design flexibility and
Stability.
RJ45 network module: RJ45 network interface selection HR911102A, built-in integrated network isolating transformer,
HR911102A is that (75 ohm+high-voltage electricity of RJ45 and primary center tap earthed circuit are integrated on the basis of HR911105A
Hold, bob-smith connector), the meeting Qiang Yidian in terms of noise suppressed of integrated form.
As shown in Fig. 2, in the present embodiment, RJ45 network module uses gigabit network technology:
To meet the needs of data transmission system is to remote, big data, anti-interference and reliability, using gigabit ether
Net transmission realizes the quick remote transmission of big data to replace 100,000,000 previous net transmission modes.After FPGA receives data
It being cached by FIFO, is transmitted after FPGA framing by super Category-5 twisted pair, system transmission speed reaches as high as 1Gbit/s,
Acquisition, verification and the transmission control of the complete paired data of hardware.
The advantage of kilomega network is to be compatible with whole technical specifications of original ethernet standard defined, and has simultaneously
New characteristic, such as 8B/10B coding and decoding scheme, packet burst technology are used, so that network transfer speeds have obtained significantly
Raising.Data are transmitted by gigabit Ethernet, 1~4 layer be related in open system interconnection model (OSI) is respectively
Physical layer, data link layer, network layer and transport layer.
The network protocol of the data transmission system of the present embodiment is realized that the network protocol for comprehensively considering realization has by FPGA
Following characteristics:
1) point-to-point communication will at least use for the data transmission for realizing gigabit networking and arrive seven layers of machine of opening and interconnecting model
Data link layer and physical layer in structure, data link layer are responsible for the assembling, transmission, error checking and correction of frame, and physical layer is mainly responsible for
Data encoding, status monitoring etc..Since system is accomplished that point-to-point data transmission, it can not consider that network delay is stifled
Fill in the loss of data and mistake that may cause；
2) udp protocol, there is no need to select complicated agreement, is assisted to improve transmission rate using the fast UDP of transmission speed
View；
3) simplifying interface signal can simplify some unnecessary signaling interfaces because being point-to-point communication, such as rush
Prominent detection and carrier-sense signal；
4) communicating pair information determines that the MAC Address of communicating pair, IP address, protocol type, port numbers etc. are all prior
It is fixed, it is directly encapsulated into data packet, does so the complexity that on the one hand can simplify system design, it on the other hand can also be with
Improve the reliability and transmission speed of information.
Above-mentioned three kinds of networks report interface that can be automatically selected according to the environment of industry spot, pass through data processing module
Judge the network line type of user, and the network data of data processing module is forwarded to specified interface server, by connecing
Mouth server is transmitted to the real service device of data processing module request.By automatically select fastest interface server into
Row data forwarding can effectively reduce Network Packet Loss and network delay to reach data acceleration.
Specifically, it is designed in multi-bus interface data handling utility provided in this embodiment, using FPGA as hardware platform,
Communication is realized using the advantage of FPGA parallel processing and the advantage construction unit module of input interface abundant, is operated in Linux
It is realized in system and data is decoded, are analyzed, are handled, are encoded, and can will be after coding according to the environmental selection of industry spot
Data are sent to O&M cloud platform by NB-IoT, LTE/LTE-A or UDP/IP.In the case where not changing existing environment of industrial network,
Realize multibus data analysis, handle and report, realize long-distance on-line monitoring, the extraction of equipment fault feature, failure divide
It reports from the evaluation with estimation, failure and is opened up with the functions such as decision, data handling utility design hardware components with interface conversion chip
The valid interface quantity of exhibition application design, (SuSE) Linux OS of the software section based on open source, transplanting and modification are more convenient,
And the heartbeat mechanism between client-server is introduced, the functions such as re-enumeration after the fault detection and equipment disconnection of interface connection
Increase the reliability using design.
Claims (8)
1. a kind of multi-bus interface data handling utility system, it is characterised in that: including input interface module, data processing module
And output interface module；It is characterized by: input interface module is connected with data processing module, the information received is passed to
Data processing module, data processing module will be sent to fortune by output interface module after data decoding, analysis, processing, coding
Tie up cloud platform；The data processing module realizes that serial ports is logical using FPGA as hardware platform, based on FPGA building serial port unit module
Letter, realization is decoded data, analyzes, handling, encoding on (SuSE) Linux OS, and the data processing module uses
FIFO memory carries out data buffer storage；And the data after coding are sent to O&M cloud platform by output interface module.
2. multi-bus interface data handling utility system according to claim 1, it is characterised in that: the output interface mould
Block includes: NB-IoT module, LTE/LTE-A module and RJ45 network module.
3. multi-bus interface data handling utility system according to claim 2, it is characterised in that: the RJ45 network mould
Block uses gigabit network technology.
4. multi-bus interface data handling utility system according to claim 2, it is characterised in that: the RJ45 network mould
Block passes through the communication of UDP/IP protocol realization data and O&M cloud platform.
5. multi-bus interface data handling utility system according to claim 3, it is characterised in that: the FPGA hardware is flat
Platform is cached after receiving data by the FIFO memory, is passed after FPGA hardware platform framing by super Category-5 twisted pair
Transmission of data.
6. multi-bus interface data handling utility system according to claim 1, it is characterised in that: the output interface mould
Some Information encapsulations that block in advance arranges communicating pair in advance are added in the header of uncorrected data and send in IP packet,
Sending module is started to work after system detection to data effective marker.
7. multi-bus interface data handling utility system according to claim 1, it is characterised in that: the input interface mould
Block is connected with situ industrial equipment, for obtaining the work state information of industrial equipment in real time；Input interface module includes industry
Ethernet, DeviceNet fieldbus, Modbus RTU bus, input interface module are connected with data processing module, will receive
To information pass to data processing module.
8. multi-bus interface data handling utility system according to claim 7, it is characterised in that: the input interface mould
Block hardware selects the chip module of combined chip or encapsulation compatibility.
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Application publication date: 20190510 |