CN109361582A - Space flight industry ethernet communication demonstration, control method - Google Patents
Space flight industry ethernet communication demonstration, control method Download PDFInfo
- Publication number
- CN109361582A CN109361582A CN201811205611.4A CN201811205611A CN109361582A CN 109361582 A CN109361582 A CN 109361582A CN 201811205611 A CN201811205611 A CN 201811205611A CN 109361582 A CN109361582 A CN 109361582A
- Authority
- CN
- China
- Prior art keywords
- video
- receiving end
- command instruction
- space flight
- sent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40143—Bus networks involving priority mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
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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
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The present invention relates to belonging to space communication field, space flight Ethernet field, for realize in consolidated network bus not only can in real time, be reliably completed control information transmission, but also can high speed completion big data quantity information transmission.For this purpose, of the invention, space flight industry ethernet communication demonstration, control method, steps are as follows: TT spread it is defeated be used to transmit command instruction, transmitting terminal and receiving end can send simultaneously and receive instruction, and specifically, TT business transmits command instruction using Socket network communication, with highest priority, guarantee when data flow is crowded, video flowing is transferred into interrupt status, preferentially sends command instruction, when command instruction is sent, continue transmitting video-frequency flow；ET stream is used to transmit video data, and transmitting terminal will need the video sent to be sent to receiving end, and the video display interface of receiving end can play video in real time.Present invention is mainly applied to space flight Ethernet observing and controlling occasions.
Description
Technical field
The present invention relates to belong to space communication field, space flight Ethernet field.It is logical to concretely relate to space flight industry ethernet
Letter demonstration, control method.
Background technique
With making constant progress for Space Science and Technology, space technology benefits the whole mankind in civil field extensively, especially
Unprecedented height is reached in fields such as space exploration, satellite navigation, meteorological observation and extraterrestrial life explorations.But simultaneously
The increasingly complicated of spacecraft total system is also resulted in, though experienced the multiple update of electronic technology, each single machine is set
Standby processing capacity has obtained tremendous increase, but the interconnection Transmission system of equipment room shows slightly backward.
The advantage of time trigger Ethernet be time determinability, fault-tolerant fault mechanism, high real-time and tradition as possible and
It is combined for business.Effective management, the effective utilization of resources for having the completely compatible property to standard ethernet, access control
Rate, expansible fault tolerant mechanism and accurate system diagnostics and good comprehensive etc..
Ethernet technology developed over more than 30 years, simply became everybody common recognition with roomy, at low cost, structure, applied
Range has penetrated into all trades and professions of society: production control, ship, airborne, vehicle-mounted, office space, Safety-Critical System etc.,
Application prospect is inestimable.But Ethernet is applied to high real-time, Safety-Critical System can not solve real-time and certainty
Problem, this critical issue must be solved by being applied to these occasions to this Ethernet.The it is proposed of TTE technology solves
The real-time and certain problem of Ethernet, while a variety of (single or multiple channel) communication plans being supported to select for user, it can
Meet the needs of high requirement of real time, Safety-Critical System, is the real-time network technology of great development prospect.
Ethernet has the high and low power consumption of transmission speed, is easily installed the advantage with good compatibility etc., and supports almost
The network protocol of all prevalences, so being widely adopted for many years.Existing bus system standard disunity, poor compatibility.It passes
The space flight Ethernet system of system lack one rationally, completely demonstrate interface.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention is directed to propose space flight industry ethernet communication demonstration, control method, real
In existing consolidated network bus not only can in real time, be reliably completed control information transmission, but also can high speed completion big data quantity letter
The transmission of breath.For this purpose, the technical solution adopted by the present invention is that, space flight industry ethernet communication demonstration, control method, step is such as
Under:
TT spread it is defeated be used to transmit command instruction, transmitting terminal and receiving end can send simultaneously and receive instruction, specifically,
TT business transmits command instruction using Socket network communication, has highest priority, that is, guarantees when data flow is crowded, depending on
Frequency stream is transferred into interrupt status, preferentially sends command instruction, when command instruction is sent, continues transmitting video-frequency flow；
ET stream is used to transmit video data, and transmitting terminal will need the video sent to be sent to receiving end, the video of receiving end
Display interface can play video in real time.
The data packet on network is also captured using Winpcap, realizes that receiving end receives and plays back video stream data.
The features of the present invention and beneficial effect are:
The present invention provides a space flight industry ethernet demo system software interfaces, both can be in consolidated network bus
In real time, be reliably completed control information transmission, and can high speed completion big data quantity information transmission, while have safety can
Letter measure guarantees the safety and reliability of key message transmission.
Detailed description of the invention:
Fig. 1 demonstrates interface whole design.
The design of Fig. 2 login interface.
Fig. 3 TT spreads defeated interface.
Fig. 4 TT business establishes connection procedure flow chart.
Fig. 5 main program flow chart.
Specific embodiment
The present invention provides a space flight industry ethernet demo system software, and transmitting terminal and receiving end can transmit TT stream simultaneously
(command instruction) and ET flow (video data), and can monitor in real time to ET stream, TT stream bandwidth and delay.In this way in same net
In network bus not only can in real time, be reliably completed control information transmission, but also can high speed completion big data quantity information transmission.
Space flight industry ethernet demo system software interface is as shown in Figure 1, main program flow chart is as shown in Figure 5.
(1) login interface
Login interface design can log on to transmitting terminal, receiving end circle as shown in Fig. 2, input correct user name, password
Face.
(2) TT spreads defeated
TT spread it is defeated be used to transmit command instruction, transmitting terminal and receiving end can send simultaneously and receive instruction.After login,
The online list of user can show All hosts title and IP address in local area network, double-click the PC title for wanting to send data, can bullet
Outbound message sends interface.As shown in Figure 3.
TT business transmits command instruction using Socket network communication, has highest priority, that is, guarantees to work as data flow
When crowded, video flowing is transferred into interrupt status, preferentially sends command instruction, when command instruction is sent, continues transmission view
Frequency flows.It is as shown in Figure 4 to establish connection procedure flow chart.
(3) ET spreads defeated
ET stream is used to transmit video data, and transmitting terminal will need the video sent to be sent to receiving end, the video of receiving end
Display interface can play video in real time.As shown in Figure 1.
In order to realize that receiving end receives and play back video stream data, the data packet on network is captured using Winpcap, it can
Effectively reduce packet loss.Winpcap is packet capturing developing instrument outstanding under windows platform, and general packet capturing step: a obtains net
Card apparatus is set to promiscuous mode, while setting the other parameters such as filter；B copies to the data packet on network interface card
In kernel buffers；C copies the data packet in kernel buffers in user buffering area to by the calling on upper layer.
(4) ET stream, TT stream bandwidth and delay real time monitoring
TT can be flowed in real time and the bandwidth of ET stream monitors in real time with delay, and with showing the IP at current data reception end
Location.As shown in Figure 1.
TT flows the bit number of the calculating as command instruction unit of transfer time tranfer of bandwidth.Video is continuous by one group
Still image composition, generates visual effect with the variation per second more than 24 frames on human eye.In color image, each pixel by R,
G, tri- component compositions of B, each component is indicated by the number of 8 bits, then a pixel is indicated with the number of 24 bits.Depending on
The calculation formula of frequency transmission bandwidth are as follows: video transmission bandwidth=every road video code stream × video camera number.Data transmission is always prolonged
When=transmission delay+forward delay interval+queuing delay.
An example of the present invention is as follows:
(1) after inputting account, password, log on to demonstration interface.
(2) online list column can show host name, user name, the IP address of All hosts in local area network, double-click host name,
It will pop up the messaging interfaces that command instruction transmission is carried out with this host.Text is inputted in edit box, is clicked and is sent, message
It can be transmitted to receiving end, and can show history message in Message Record.
(3) video that transmitting terminal selection needs to send, is clicked after sending, receiving end can receive video and can show in real time
Show.
(4) bandwidth and delay of TT stream and ET stream, and current other side's IP address being capable of real-time display.
Claims (2)
1. a kind of space flight industry ethernet communication demonstration, control method, characterized in that steps are as follows:
TT spread it is defeated be used to transmit command instruction, transmitting terminal and receiving end can send simultaneously and receive instruction, specifically, TT industry
Business transmits command instruction using Socket network communication, has highest priority, that is, guarantees the video flowing when data flow is crowded
It is transferred into interrupt status, preferentially sends command instruction, when command instruction is sent, continues transmitting video-frequency flow；
ET stream is used to transmit video data, and transmitting terminal will need the video sent to be sent to receiving end, and the video of receiving end is shown
Interface can play video in real time.
2. space flight industry ethernet communication demonstration as described in claim 1, control method, characterized in that also use Winpcap
It captures the data packet on network, realizes that receiving end receives and plays back video stream data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205611.4A CN109361582A (en) | 2018-10-15 | 2018-10-15 | Space flight industry ethernet communication demonstration, control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811205611.4A CN109361582A (en) | 2018-10-15 | 2018-10-15 | Space flight industry ethernet communication demonstration, control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109361582A true CN109361582A (en) | 2019-02-19 |
Family
ID=65349351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811205611.4A Pending CN109361582A (en) | 2018-10-15 | 2018-10-15 | Space flight industry ethernet communication demonstration, control method |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000605A (en) * | 2020-08-26 | 2020-11-27 | 北京控制与电子技术研究所 | Method and device for transmitting instructions and data |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050117596A1 (en) * | 2002-06-13 | 2005-06-02 | Fts Computertechnik Ges.M.B.H. | Communication method and system for the transmission of time-driven and event-driven Ethernet messages |
| US20130142204A1 (en) * | 2007-04-11 | 2013-06-06 | Fts Computertechnik Gmbh | Communication method and apparatus for the efficient and reliable transmission of tt ethernet messages |
| CN107147467A (en) * | 2017-07-24 | 2017-09-08 | 上海应用技术大学 | A kind of TTE terminal systems internal time synchronization system and method |
-
2018
- 2018-10-15 CN CN201811205611.4A patent/CN109361582A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050117596A1 (en) * | 2002-06-13 | 2005-06-02 | Fts Computertechnik Ges.M.B.H. | Communication method and system for the transmission of time-driven and event-driven Ethernet messages |
| US20130142204A1 (en) * | 2007-04-11 | 2013-06-06 | Fts Computertechnik Gmbh | Communication method and apparatus for the efficient and reliable transmission of tt ethernet messages |
| CN107147467A (en) * | 2017-07-24 | 2017-09-08 | 上海应用技术大学 | A kind of TTE terminal systems internal time synchronization system and method |
Non-Patent Citations (2)
| Title |
|---|
| LVAN B.G.LIU: "《TCP套接字编程实现》", 《百度》 * |
| 李振伟: "《基于网络演算的时间触发以太网的研究》", 《中国学术期刊（光盘版）电子杂志社》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000605A (en) * | 2020-08-26 | 2020-11-27 | 北京控制与电子技术研究所 | Method and device for transmitting instructions and data |
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Application publication date: 20190219 |