CN104635661A - Data transmission device and data transmission method - Google Patents
Data transmission device and data transmission method Download PDFInfo
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- CN104635661A CN104635661A CN201410645310.9A CN201410645310A CN104635661A CN 104635661 A CN104635661 A CN 104635661A CN 201410645310 A CN201410645310 A CN 201410645310A CN 104635661 A CN104635661 A CN 104635661A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 15
- 230000009466 transformation Effects 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000006870 function Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000011033 desalting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The embodiments of the invention relate to a data transmission device and a data transmission method, wherein the manufacturing cost is reduced and the data scanning and transmitting are realized at the same time. Meanwhile, the action of a simulator is realized in a virtual environment. According to the embodiments of the invention, the data transmission device comprises a common memory, a conversion part and a communication part. The common memory is capable of periodically transmitting data to other equipment and scanning data composed of a plurality of data blocks.
Description
The application, based on Japanese patent application 2013-233710 (applying date: on November 12nd, 2013), enjoys preferential interests from this application.The application comprises the full content of this application by referring to this application.
Technical field
Embodiments of the present invention relate to data link and data transferring method.
Background technology
In the past, there will be a known the set of equipments control device of PLC (programmable logic controller (PLC)) etc. of Monitor and Control carrying out the various equipment such as upper and lower water course treatment facility, burning facility, sea water desalting equipment, water treatment facilities, set of equipments (plant).In the network HMI (Human Machine Interface: man-machine interface), controller etc. of this set of equipments control device connected, use the message transmission based on Ethernet (registered trademark) or the scanning transmission based on specialized hardware.When carrying out transmitting based on the message of Ethernet (R), set of equipments control device can use existing hardware, and therefore the manufacturing cost of set of equipments control device becomes cheap.
In addition, simulator is employed in order to the application development of set of equipments control device and maintenance.When use simulator, can with single unit simulation multiple actual set of equipments, therefore without the need to maintaining application development device, the attending device of each actual set of equipments.Further, at Web vector graphic Ethernet (R), the simulator action of set of equipments control device can easily be made in virtualized environment.
But in order to the application action of set of equipments control device transmitted based on the scanning of specialized hardware by simulator use in a network, set of equipments control device needs specialized hardware, and the manufacturing cost of set of equipments control device increases.
In addition, when specialized hardware being installed in set of equipments control device and scanning transmission can be carried out, be difficult in virtualized environment, make simulator action.
Summary of the invention
Problem to be solved by this invention is, realizes scanning and transmits, and can carry out data link and the data transferring method of the action of the simulator under virtualized environment while providing the reduction seeking manufacturing cost.
The data link of embodiment possesses shared memory, transformation component and Department of Communication Force.Shared memory can be stored in the scan-data be made up of multiple data block for scanning transmission of periodically broadcast transmission between other device.Transformation component is by scan-data and transmit packet used based on the message of Ethernet (R) and mutually convert.Department of Communication Force between itself and other device, by carrying out the transmission based on broadcast transmission of packet based on the transmission lines of Ethernet (R).
According to the data link of above-mentioned formation, realize scanning while the reduction of manufacturing cost can be sought and transmit, and the action of the simulator under virtualized environment can be carried out.
Embodiment
(embodiment 1)
The data communication system of the embodiment below illustrated is the data communication system for transport process control data etc. being applied to extensive set of equipments control system etc.
As shown in Figure 1, the data communication system involved by present embodiment is the formation that two PC (Personal Computer: personal computer) 100,200 are connected to Ethernet (R) hub (hub) 400.PC200 is the set of equipments control device of PLC etc. of Monitor and Control carrying out the various equipment such as upper and lower water course treatment facility, burning facility, sea water desalting equipment, water treatment facilities, set of equipments.PC100 is the PC carried for the application development of set of equipments control device and the simulator of maintenance.PC100,200 is examples for data link.
PC100 is the common computing machine of simulating set of equipments control device.As shown in Figure 1, PC100 possesses controller application program 101, controller simulator 102, scanning transmission application programming interfaces 120, network transformation portion 110 and Ethernet (R) adapter 104.
Controller simulator 102 is the simulators for simulating actual set of equipments.Controller application program 101 is application programs of set of equipments control device, action on controller simulator 102.
Scanning transmission application programming interfaces are interfaces that the scanning under the communication protocol for realizing TCnet transmits.About the data transmission between PC100 and PC200, implement as scanning load mode.At this, TCnet is real-time communication protocol, is the network technology realizing real-time communication function and highly reliableization function on Ethernet (R).
TCnet has scanning transmitting function (cyclic transfer function).Arbitrary station (being PC100,200 in the present embodiment) on the network of TCnet all possesses the common memory of same capacity, be kept at scan-data in common memory by periodically carry out, based on the broadcast communication of multicast or broadcast, and be all updated to same content at whole station.Be connected to station external unit can by this common memory the control data of sharing system entirety.Thus, the exchanges data with other station can be carried out in each station on network under the condition not recognizing transmission.
Scan-data is made up of multiple data block, with block unit transmission.Such as, 2048 data blocks that scan-data is 1 data block with 64 words are formed, but are not limited thereto.Scanning transmission has three relative importance values (at a high speed/middling speed/low speed), can by each data block setting relative importance value in each data block, and can Data Update cycle of each relative importance value of arbitrary decision.
In scanning load mode, the checking token (token) with transmission route is sent successively between device, the device receiving checking token becomes calling party (talker) and with some cycles, the data block of the scan-data of the common memory of this device is sent to other device, and the device becoming the monitoring side (listener) receiving its data block upgrades the data block of this device (calling party) in its common memory.The situation that these data transmit is shown in Fig. 2.In addition, in the present embodiment, the data transmission based on scanning load mode between each PC100,200 is set to the data transmission based on multicast.
Network transformation portion 110 converts mutually by the data block of the scan-data under the scanning load mode of TCnet with based on the packet under the messaging method of Ethernet (R).In addition, transmit the details in application programming interfaces 120 and network transformation portion 110 about scanning, describe later.
The data transmission based on Ethernet (R) is responsible for by Ethernet (R) adapter 104.In addition, after this, Ethernet (R) adapter 104 is called adapter 104.
PC200 is set of equipments control device, possesses HMI application program 201, HMI software 202, scanning transmission application programming interfaces 120, network transformation portion 110 and adapter 104 (Ethernet (R) adapter 104).
HMI software 202 is the software realizing HMI, and HMI application program 201 is application programs of action on HMI software 202.Scanning transmits application programming interfaces 120, network transformation portion 110 and adapter 104 and has the function same with PC100 and formation.
In addition, as shown in Figure 3, the PC100 of present embodiment, 200 possess CPU (Central Processing Unit: CPU (central processing unit)) 301, ROM (Read Only Memory: ROM (read-only memory)) 302, RAM (Random Access Memory: random access memory) 303, HDD (Hard Disk Drive: hard disk drive) 304, the output device 306 of display equipment etc., the entering apparatus such as keyboard or mouse 305 and Ethernet (R) adapter 104 are formed as hardware, they are connected to bus 310, become the hardware that make use of common computing machine to form.That is, the PC100,200 of present embodiment has existing hardware formation, instead of scanning transmits specialized hardware formation used.
Next, the details in the scanning transmission application programming interfaces 120 in the PC100,200 of present embodiment and network transformation portion 110 is described.
As shown in Figure 4, scanning transmission application programming interfaces 120 possess transmission block register 121, send data write section 122 and receive data reading portion 123.
Block number in the scan-data of the transmission data of transmission object is registered in the storer 111 in network transformation portion 110 by transmission block register 121.At this, block number is to the identifying information that the data block of transmission object identifies in scan-data, is an example of block identifying information.
Send data write section 122 data block of transmission object is written in the scan-data of the common memory 112 in network transformation portion 110.Receive the data block that data reading portion 123 reads the data received from the scan-data being stored in common memory 112.
As shown in Figure 4, network transformation portion 110 possesses storer 111, common memory 112, sends transformation component 113 and receiving conversion portion 114.
Storer 111 is the block number storage mediums used in the scan-data of the transmission data of registration transmission object.Common memory 112 is can the storage medium of memory scanning data.
Send transformation component 113 and generate the packet comprising block number and data block, this data block is corresponding with block number in the scan-data being stored in common memory 112.Thus, send transformation component 113 and the data block of scan-data is transformed to the packet that the message for Ethernet (R) transmits.At this, packet becomes the structure of known multicast packets.Send transformation component 113 and send the packet (sending bag) generated via adapter 104.Thus, send bag and be broadcasted with multicast mode the device being sent to other via Ethernet (R) hub 400, and realize scanning transmission.
Adapter 104 receives the packet gone out with multicast mode broadcast transmission by other device.At this, the packet received becomes the structure of known multicast packets.The receiving package (packet) that receiving conversion portion 114 receives from this extracts block number and data, and the data extracted is kept in common memory 112 as the data block represented by the block number in scan-data.
At this, send the example that transformation component 113, receiving conversion portion 114 are transformation components.In addition, the example that transformation component 113, receiving conversion portion 114 are Department of Communication Forces is sent.
Next, the PC100 of present embodiment formed like this, the data transfer process of 200 are described.First, Fig. 5, Fig. 6 data sending processing to present embodiment is used to be described.
First, namely the position of the data block of sending object in scan-data is sent block number and is registered in (step S11) in the storer 111 in network transformation portion 110 by the transmission block register 121 of scanning transmission application programming interfaces 120.Then, the data block of sending object is written to the position (step S12) represented by transmission block number in the scan-data of the common memory 112 in network transformation portion 110 by the transmission data write section 122 of scanning transmission application programming interfaces 120.
Next, the transmission transformation component 113 in network transformation portion 110 generates the packet (step S13) as sending bag.Then, send transformation component 113 the transmission block number be registered in storer 111 to be registered in the block number sending bag (step S14).Next, send transformation component 113 data block of the position represented by the transmission block number in scan-data to be copied in transmission bag (step S15).Then, send transformation component 113, via adapter 104, multicast transmission (step S16) is carried out to transmission bag.Thus, realize scanning to transmit.
Next, Fig. 5, Fig. 7 data receiver process to present embodiment is used to be described.First, the receiving conversion portion 114 in network transformation portion 110 receives via adapter 104 packet (receiving package) (the step S31) that send with multicast mode.
Next, receiving conversion portion 114 reads block number and data (step S32) from receiving package.Then, receiving conversion portion 114 copies the data of reading to represented by block number in the scan-data of common memory 112 position (step S33) as data block.
Scanning transmits the reception data reading portion 123 of the application programming interfaces 120 scan-data sense data block from the common memory 112 being stored in network transformation portion 110 as reception data (step S34).By more than, realize scanning transmit.
So in the present embodiment, network transformation portion 110, scanning transmission scan-data used being transformed to the basis of the packet transmitted for the message of Ethernet (R), carries out multicast transmission.In addition, when receiving with the packet of multicast mode transmission, the packet received is transformed into the data block of scan-data and is registered in common memory 112 by network transformation portion 110.Thus, according to the present embodiment, can transmit, without the need to arranging specialized hardware in PC100,200 with the scanning of existing hardware implementing.Therefore, according to the present embodiment, scanning can be realized transmit while the reduction seeking manufacturing cost, the application action identical with the application program of the set of equipments control device action in reality can be made.
(embodiment 2)
In embodiment 2, when making simulator action in virtualized environment, realize scanning without the need to arranging specialized hardware and transmit.
The PC700 of present embodiment is the computing machine being modeled to complete equipment control in virtualized environment.As shown in Figure 8, the PC700 of present embodiment possesses adapter 104, main frame OS (Operating System " operating system) 703, virtualization software 702 and client computer OS710,720.At this, about adapter 104, be same with embodiment 1.
Virtualization software 702 is action software for realizing the virtualized environment making multiple client computer OS action on main frame OS703.In the present embodiment, a PC700 makes two client computer OS710,720 actions, is modeled to complete equipment control device with client computer OS710,720.That is, in the present embodiment, the application action of multiple set of equipments is made with single device PC700.
As shown in Figure 8, client computer OS710 possesses controller application program 101, controller simulator 102, scanning transmission application programming interfaces 120, network transformation portion 110 and virtual ethernet (R) 701.At this, about function and the formation in controller application program 101, controller simulator 102, scanning transmission application programming interfaces 120, network transformation portion 110, be same with embodiment 1.
In addition, as shown in Figure 8, client computer OS720 possesses HMI application program 201, HMI software 202, scanning transmission application programming interfaces 120, network transformation portion 110 and virtual ethernet (R) 701.At this, about function and the formation in HMI application program 201, HMI software 202, scanning transmission application programming interfaces 120, network transformation portion 110, be same with embodiment 1.
Virtual ethernet (R) 701 plays function as Ethernet (R) adapter virtually in client computer OS710,720, realizes the function of the adapter 104 of embodiment 1 in client computer OS710,720.
Transmit data sending processing, the data receiver process in application programming interfaces 120 and network transformation portion 110 about the scanning based on present embodiment, perform in client computer OS710,720 respectively, about each process, carry out in the same manner as embodiment 1.
So in the present embodiment, simulator action is made in virtualized environment, when making the application action of multiple set of equipments with single device PC700, in client computer OS710,720, scanning being transmitted the basis of the packet that scan-data used transmits as the message for Ethernet (R), carry out multicast transmission.In addition, in client computer OS710,720, multicast reception is to packet, the packet received is registered in the scan-data of common memory 112 as data block.For this reason, in the present embodiment, perform the simulator under virtualized environment, the application action of multiple set of equipments can be made with single device, and scanning transmission can be realized while the reduction seeking manufacturing cost.
In addition, in above-mentioned embodiment 1,2, common memory 112, storer 111 are arranged in network transformation portion 110, but are not limited thereto, also can be configured to the outside being arranged on network transformation portion 110.
By the PC100,200 and the data transmission program that performs of the PC700 of embodiment 2 of embodiment 1, provide as computer program in the recording medium of the embodied on computer readable of CD-ROM, floppy disk (FD), CD-R, DVD (Digital Versatile Disk) etc. using the file record of installable form or executable form.
In addition, by embodiment 1 PC100,200 and embodiment 2 PC700 perform data transmission program also can be configured to, be stored on the computing machine that is connected with the network of the Internet etc., by providing as computer program thus via web download.In addition, also can be configured to, by by embodiment 1 PC100,200 and the data transmission program that performs of the PC700 of embodiment 2 to provide via networks such as the Internets or to issue.
In addition, also can using by embodiment 1 PC100,200 and the data transmission program that performs of the PC700 of embodiment 2 be encased in ROM302 in advance and provide as computer program.
By embodiment 1 PC100,200 and the data transmission program that performs of the PC700 of embodiment 2 be the module composition including above-mentioned each portion (scanning transmits application programming interfaces 120, sends transformation component 113, receiving conversion portion 114), as the hardware of reality, CPU301 reads from aforementioned recording medium and carries out data transmission program, above-mentioned each portion is loaded onto on RAM303 thus, and on RAM303, generate scanning transmission application programming interfaces 120, transmission transformation component 113, receiving conversion portion 114.
Further, the various modules of the system recorded here can realize as the assembly in software application, hardware and/or software module or the computing machine of more than 1 as server.Various modules is illustrated respectively, but they also can to have in the logical OR code on identical basis several or whole.
Be illustrated several embodiment of the present invention, but these embodiments are pointed out as an example, intention does not lie in restriction scope of invention.These new embodiments can be implemented in other various modes, in the scope of purport not departing from invention, can carry out various omission, displacement, change.These embodiments and distortion thereof are contained in scope of invention and purport, and the invention be contained in described in claims and equivalent scope thereof.
Accompanying drawing explanation
Fig. 1 is the block diagram represented the network formation of the data communication system involved by embodiment 1 and the formation of function.
Fig. 2 is the figure be described as the scanning transmission of an example to embodiment 1.
Fig. 3 is the block diagram that the example formed the hardware of the PC of embodiment 1 represents.
Fig. 4 is the block diagram that the example transmitting the formation of the function in application programming interfaces and network transformation portion to the scanning of embodiment 1 represents.
Fig. 5 is data transmission about embodiment 1 and is described figure used to an example of the flowing of data.
Fig. 6 is the process flow diagram that an example of the order of data sending processing to embodiment 1 represents.
Fig. 7 is the process flow diagram that an example of the order of data receiver process to embodiment 1 represents.
Fig. 8 is the block diagram represented the formation of the function of the PC involved by embodiment 2.
Claims (5)
1. a data link, possesses:
Shared memory, can store the scan-data be made up of multiple data block for scanning transmission of periodically broadcast transmission between other device;
Transformation component, converts mutually to described scan-data and the packet for transmitting based on the message of Ethernet; And
Department of Communication Force, and between other device, by carrying out the transmission based on broadcast transmission of described packet based on the transmission lines of Ethernet.
2. data link as claimed in claim 1,
Described transformation component generates described packet, and described packet is included in the block identifying information of the data block identifying transmission object in the scan-data be stored in described shared memory and the data block corresponding with described piece of identifying information,
Described Department of Communication Force is by sending to other device described by generated data packet broadcast based on the transmission lines of Ethernet.
3. data link as claimed in claim 1 or 2,
Described Department of Communication Force receives the bag sent out from other devices broadcasting described,
Described transformation component obtains described piece of identifying information and data from the bag received, and acquired data is kept in described shared memory as the data block represented by described piece of identifying information in described scan-data.
4. the data link according to any one of claims 1 to 3,
The action on virtual software of described transformation component.
5. a data transferring method,
To between other device periodically broadcast transmission for scanning the scan-data be made up of multiple data block of transmission and the packet for transmitting based on the message of Ethernet converts mutually,
And between other device, by carrying out the transmission based on broadcast transmission of described packet based on the transmission lines of Ethernet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013233710A JP2015095067A (en) | 2013-11-12 | 2013-11-12 | Data transmission device, data transmission method, and program |
| JP2013-233710 | 2013-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104635661A true CN104635661A (en) | 2015-05-20 |
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ID=53197431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410645310.9A Pending CN104635661A (en) | 2013-11-12 | 2014-11-11 | Data transmission device and data transmission method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015095067A (en) |
| KR (1) | KR101589831B1 (en) |
| CN (1) | CN104635661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108108490A (en) * | 2018-01-12 | 2018-06-01 | 平安科技（深圳）有限公司 | Hive table scans method, apparatus, computer equipment and storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2015095067A (en) | 2015-05-18 |
| KR101589831B1 (en) | 2016-01-28 |
| KR20150054659A (en) | 2015-05-20 |
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Application publication date: 20150520 |