CN117768342A - Carrier rocket testing, launching and controlling network system based on integration of real-time network and Ethernet - Google Patents
Carrier rocket testing, launching and controlling network system based on integration of real-time network and Ethernet Download PDFInfo
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Abstract
The invention relates to a carrier rocket testing and launching control network system based on the integration of a real-time network and an Ethernet, which adopts a TTE redundant real-time network for key data information flow on an arrow and has the characteristics of certainty, instantaneity and high speed; the redundant Ethernet is adopted for ground large-scale node communication, and the method has the characteristics of stability, expansibility and compatibility. Meanwhile, a real-time network and Ethernet hybrid network system is adopted, a communication link between the rocket and the ground network is opened, and reliable transmission of the rocket-to-ground full-link test data is realized in a rocket test control flow; and the arrow ground communication data are captured through the whole network monitoring management and data capture module to present the arrow ground network topology and the running state in real time, so that the data are tracked and inquired and the problems are checked. The invention effectively solves the problems of multiple conversion links and reduced test efficiency caused by different arrow ground network systems, ensures the traceability of the data transmission process, and has application value and long-term significance for the development of an integrated intelligent arrow ground test, launch and control system in the future.
Description
Technical Field
The invention belongs to the technical field of network communication, and relates to a carrier rocket test launch control network system based on integration of a real-time network and an Ethernet.
Background
The standard Ethernet (Ethernet) has the characteristics of large bandwidth, low price, flexible networking and the like, and the application range already covers the fields of industrial control, ships, onboard, vehicle-mounted, office and the like, but the time certainty in complex network communication is difficult to ensure only by the communication mode of the standard Ethernet based on event triggering, so that the popularization and the application of the standard Ethernet in rocket key system control are limited.
Time triggered Ethernet (Time-triggered Ethernet, TTE) is a novel deterministic integrated service communication network which combines the real-Time property, certainty and fault tolerance of Time Triggered Protocol (TTP) with the popularity, maturity and networking flexibility of traditional Ethernet, and supports the integrated transmission of various application attribute services in the same network with high reliability and high performance.
Most of domestic rocket ground test initiation control networks adopt Ethernet, but data cannot be directly transmitted to an rocket through the network, and the rocket ground test initiation control networks need to be converted through intermediate links, so that the problems of reliability reduction and test efficiency reduction caused by different rocket ground communication systems exist. Other industrial fields are not researched to a network type use mode that a real-time network and an Ethernet are used together to fully exert respective advantages and characteristics.
Disclosure of Invention
The invention solves the technical problems that: the carrier rocket test launch control network system based on the integration of the real-time network and the Ethernet is provided, a real-time network and Ethernet mixed network system is adopted, a communication link between an arrow and a ground network is opened, and reliable transmission of all-link test data from the arrow to the ground is realized in a rocket test control flow.
The solution of the invention is as follows: a carrier rocket testing and launching control network system based on real-time network and Ethernet fusion comprises N rocket-mounted real-time network switching main nodes, M rocket upper end nodes, 2 rocket ground communication switching main nodes, a ground front end Ethernet switching main node, a ground rear end Ethernet switching main node, P ground end nodes, a whole network monitoring management and data packet capturing module; n is an integer not less than 20, M and P are integers not less than 200;
each arrow upper end node is connected with 2 arrow real-time network exchange main nodes to form a first transmission channel and a second transmission channel which are completely the same, and test data and control instructions among the arrow upper end nodes are sent to the arrow real-time network exchange main nodes;
the on-arrow real-time network exchange master node adopts a TTE network protocol to communicate with the on-arrow end nodes in real time, the on-arrow real-time network exchange master node gathers and forwards test data to other on-arrow real-time network exchange master nodes and the on-arrow communication exchange master node, forwards control instructions among the on-arrow end nodes to the on-arrow end nodes, adopts a TT frame format protocol for key control instructions with high real-time certainty requirements, and adopts a BE frame format protocol for the rest; meanwhile, the on-arrow real-time network switching master node provides a standard Ethernet physical port;
the 2 arrow ground communication exchange master nodes respectively receive the first transmission channel test data and the second transmission channel test data forwarded by the arrow real-time network exchange master node, and send the received test data to the ground front-end Ethernet exchange master node through the Ethernet;
the front end Ethernet switching master node of the ground sends test data to the back end Ethernet switching master node of the ground through the Ethernet;
the ground back-end Ethernet switching master node distributes the received test data to P ground end nodes;
the ground end nodes are connected with the ground back-end Ethernet main node, and are used for receiving, processing and displaying the on-arrow test data, and transmitting the on-arrow test data to each other; the ground end node uploads a ground control instruction to the arrow upper end node through the test and launch control network system;
the whole-network monitoring management and data packet capturing module is arranged on the ground, acquires the state information of the on-arrow real-time network exchange master node and the on-arrow end node through the 2 arrow ground communication exchange master nodes, presents the arrow ground network topology and the running state in real time, captures arrow ground communication data, and acquires arrow ground bidirectional communication data in a mirror image mode.
Furthermore, the real-time network switching main node on the arrow, the communication switching main node on the arrow, the Ethernet switching main node at the front end of the ground and the Ethernet switching main node at the rear end of the ground are all of double redundancy architecture.
Furthermore, the arrow upper end node and the ground end node are both redundant with double network ports.
Further, the BE frame format includes a destination address, a source address, a type field, an IP field, a TCP or UDP message field, the type field identifying the format of the data carried by the current frame.
Further, the BE frame supports a port mirroring function, a unicast function, a broadcast function and a static multicast function, and supports a dynamic address learning and aging mechanism; the forwarding table is provided with a static multicast configuration part and a dynamic part, so that a two-layer switching function is realized; the BE frame processing mechanism includes inbound processing, switching network, and outbound processing;
and (3) inbound treatment: extracting incoming information and storing slices of BE frames input to an on-arrow real-time network switching main node, learning and ageing a forwarding table according to the incoming information, inquiring a destination port, and slicing or capturing and uploading BE frame data according to an inquiring result;
switching network: realizing the network interaction function of the inbound and outbound of BE frame data slice cells, and outputting the slice cells to the corresponding outbound ports according to the forwarding port information;
and (3) outbound processing: and the method is responsible for storing the sliced cells transferred out of the switching network, taking out the sliced cells according to the priority order after the whole frame storage is completed, removing frame header information for BE frame reorganization, and outputting the reorganized BE frame from a source address to a target address.
Furthermore, the on-arrow real-time network switching master node supports a socket interface and FTP and Telnet protocols.
Further, the arrow ground communication exchange master node is provided with a mirror image port, the whole network monitoring management and data packet capturing module captures the arrow ground communication data through the mirror image port of the arrow ground communication exchange master node, the mirror image obtains arrow ground two-way communication data, and the whole network configuration, management, monitoring, packet capturing analysis and data tracing are carried out on the real-time network and the Ethernet, and the specific functions comprise:
(1) The design simulation of the network topology configuration and the network information flow of the real-time network and the Ethernet are integrated;
(2) Designing a network virtual link schedule, and detecting reachability and conflict;
(3) Network parameter online configuration, uploading and downloading, and flow mirror strategy configuration;
(4) Network running state, communication jitter, real-time monitoring of load on-line and off-line, topology state display and equipment alarm;
(5) The network exchange data source codes grasp the packet, analyze the path of the data packet, screen the data packet and log record.
Further, the arrow ground communication exchange master node sends BE data frames to the ground front-end Ethernet exchange master node; the arrow ground communication exchange master node also has the functions of converting TT frames into BE frames and converting BE into TT frames, and specifically comprises the following steps:
TT to BE: the arrow ground communication exchange main node carries out protocol processing, conversion and encapsulation on arrow TT frame data with strong real-time requirements into BE frame data, and sends the BE frame data to the ground front-end Ethernet exchange main node for real-time processing, distribution and display;
BE turns to TT: the arrow ground communication exchange master node carries out protocol processing, conversion and encapsulation on control instructions and test data sent by the ground front-end Ethernet exchange master node into TT frame data, and sends the TT frame data to the arrow ground real-time network exchange master node for injecting time slices for simulating the arrow faults.
Furthermore, the on-arrow real-time exchange master node supports a cascade topology, and the cascade topology is formed by connecting a plurality of on-arrow real-time exchange master nodes in series.
Furthermore, the real-time exchange main node on the arrow, the BE data frame of the TTE network supports the standard UDP and TCP protocol stacks, and supports a retransmission mechanism and a handshake mechanism.
Compared with the prior art, the invention has the beneficial effects that:
(1) The carrier rocket testing and launching network system based on the fusion of the real-time network and the Ethernet provided by the invention adopts a TTE redundant real-time network for key data information flow on an arrow, has the characteristics of certainty, instantaneity, reliability, high speed and the like, and the certainty comprises exchange transmission determination and time sequence determination, the instantaneity comprises low delay and low jitter, and the reliability comprises multichannel redundant transmission and distributed time synchronization; the redundant Ethernet is adopted for ground large-scale node communication, and the method has the characteristics of stability, expansibility, compatibility and the like. Meanwhile, a network system of real-time network and Ethernet is adopted to open a communication link between the rocket and the ground network, so that the mixed data common network transmission is realized, the system interconnection design is simplified, the reliable transmission of the rocket-to-ground full-link test data is realized in a rocket test control flow, and the method has application value and long-term significance for the development of an integrated intelligent rocket-to-ground test launch control system in the future.
(2) The invention can carry out planning configuration and conflict detection on the network topology by arranging the whole network monitoring management and data packet capturing module, presents the arrow network topology and the running state in real time for carrying out ground monitoring, captures arrow ground communication data and ensures the traceability of the data transmission process.
(3) In the aspect of communication redundancy fault tolerance, the invention combines the simplification of a bus network and the high reliability of an information link through the design of physical port redundancy, logic link redundancy and information source redundancy scheme, and can ensure the data reconstruction and high-speed reliable communication capability under various complex environmental conditions through the fault tolerance designs of a data link layer fault tolerance, an application layer fault tolerance, an electrical system layer fault tolerance and the like.
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FIG. 1 is a schematic diagram of a launch vehicle testing network system based on real-time network and Ethernet integration in an embodiment of the invention;
FIG. 2a is a diagram illustrating a BE frame format in a TTE network according to an embodiment of the present invention;
FIG. 2b is a schematic diagram of TT frame format in a TTE network according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a dual redundant network architecture;
FIG. 4 is a diagram of a TDMA schedule;
fig. 5 is a schematic diagram of a hybrid communication mode of TTE network TT, RC, BE data.
Detailed Description
The invention is further illustrated below with reference to examples.
Example 1
The invention provides a carrier rocket testing and launching network system based on real-time network and Ethernet fusion, which is shown in figure 1 and comprises N real-time network switching main nodes on an arrow, M arrow upper end nodes, 2 arrow ground communication switching main nodes, a ground front end Ethernet switching main node, a ground rear end Ethernet switching main node, P ground end nodes and 1 whole network monitoring management and data packet capturing module; n is more than or equal to 20, M is more than or equal to 200, and P is more than or equal to 200.
Each arrow upper end node is connected with 2 arrow real-time network exchange main nodes through a double-network port to form a first transmission channel and a second transmission channel which are identical, and test data and control instructions among the arrow upper end nodes are sent to the arrow real-time network exchange main nodes;
the on-arrow real-time network exchange master node adopts TTE network protocol to communicate with the on-arrow end nodes in real time, the on-arrow real-time network exchange master node gathers and transmits test data to other on-arrow real-time network exchange master nodes and the on-arrow communication exchange master node, and transmits control instructions among the on-arrow end nodes to the on-arrow end nodes, wherein key control instructions with high real-time certainty requirements use TT frame format protocol, and the rest adopts BE frame format protocol. In the exchange forwarding transmission process of two network data, a preemptive scheduling mechanism is adopted for TT frames, and if BE frames are being transmitted when TT frame time slices arrive, the TT frames can directly and forcedly interrupt BE data transmission and start to transmit TT data.
The on-arrow real-time network switching master node provides a standard Ethernet physical port, completes the functions of time-triggered Ethernet time synchronization and data switching, receives, filters and forwards network data, supports network centralized management, and performs real-time detection control on data traffic.
The 2 arrow ground communication exchange master nodes respectively receive the first transmission channel test data forwarded by the arrow real-time network exchange master node and the second transmission channel test data forwarded by the arrow real-time network exchange master node, and send the received test data to the ground front-end Ethernet exchange master node through the Ethernet;
the front end Ethernet switching master node of the ground sends test data to the back end Ethernet switching master node of the ground through the Ethernet;
the ground back-end Ethernet switching master node distributes the received test data to P ground end nodes;
the ground end nodes are connected into the ground back end Ethernet main node through the double network ports, and are used for receiving, processing and displaying the on-arrow test data, and meanwhile, the on-arrow test data are mutually transmitted between the ground end nodes;
the whole-network monitoring management and data packet capturing module is arranged on the ground, acquires state information of the on-arrow real-time network exchange master node and the on-arrow end node through the 2 arrow ground communication exchange master nodes, presents arrow ground network topology and running state in real time, captures arrow ground communication data, and acquires arrow ground two-way communication data in a mirror image mode so as to be used for data tracing inquiry and auxiliary problem investigation.
Similarly, the ground end node can upload ground control instructions to the arrow through the test launch control network system, and the functions of power distribution, program binding, testing and the like are completed.
In the invention, the real-time network switching main node on the arrow, the communication switching main node on the arrow ground, the Ethernet switching main node at the front end of the ground and the Ethernet switching main node at the rear end of the ground are all of a double-redundancy architecture; as shown in fig. 1, the ground front-end ethernet switching master node includes ground front-end ethernet switching master nodes Q1, Q2, and the ground back-end ethernet switching master node includes ground back-end ethernet switching master nodes H1, H2. The arrow upper end nodes and the ground end nodes are all designed in a double-network port redundancy mode.
In this embodiment, the connection relationship between each component of the network system is specifically:
1) The on-arrow real-time network exchange main nodes are connected with the on-arrow real-time network exchange main nodes through coaxial network cables;
2) The on-arrow real-time network exchange main node is connected with the arrow ground communication exchange main node through a coaxial network cable;
3) The arrow ground communication exchange main nodes are connected with the whole network monitoring management and data packet capturing modules through optical cables, and the ground front end Ethernet exchange main nodes, the ground rear end Ethernet exchange main nodes and the ground front end Ethernet exchange main nodes are connected with the ground rear end Ethernet exchange main nodes through optical cables;
4) The ground back-end Ethernet switching master node is connected with the ground end node through a coaxial network cable.
In this embodiment, the arrow ground communication exchange master node is provided with a mirror image port, and the whole network monitoring management and data packet capturing module captures the arrow ground communication data through the mirror image port of the arrow ground communication exchange master node, and the mirror image obtains arrow ground bidirectional communication data, and carries out whole network configuration management, link planning, state monitoring, packet capturing analysis, data tracing and the like on the real-time network and the ethernet. The specific functions include:
(1) The design simulation of the network topology configuration and the network information flow of the real-time network and the Ethernet fusion;
(2) Designing a network virtual link schedule, planning and configuring a communication period, a data length and a sending time, and detecting reachability and conflict;
(3) Network parameter online configuration, uploading and downloading, and flow mirror strategy configuration;
(4) Real-time monitoring of network running state, synchronization precision, communication jitter, load on-line and off-line, topology state display and equipment alarm;
(5) The network exchange data source codes grasp the packet, analyze the path of the data packet, screen the data packet and log record.
The invention maps and butts BE data with a standard protocol stack interface, and is compatible with TCP/IP. The BE frame format in the network is shown in FIG. 2a and includes a 48bit destination address and a 48bit source address, followed by a 16bit type field that identifies the format of the data carried by the current frame, followed by an IP field, TCP or UDP message field. In addition, the time triggered data frame (TT frame) format is shown in fig. 2 b.
The development of application layer software of the on-arrow real-time network exchange master node supports socket interfaces, supports high-level protocols such as FTP, telnet and the like, and can realize seamless transplanting of network software of an IP layer and above.
For the on-arrow real-time network switching master node, the BE frame supports a port mirror function, unicast, broadcast and static multicast functions, and supports a dynamic address learning and aging mechanism; the forwarding table is provided with a static multicast configuration part and a dynamic part, so that a two-layer switching function is realized. The BE frame processing mechanism includes an inbound processing section, a switching network section, and an outbound processing section, and is specifically as follows:
(1) And (3) inbound treatment: and extracting the incoming information and storing the slices of the BE frames input to the on-arrow real-time network switching main node, learning and ageing a forwarding table according to the incoming information, inquiring a destination port, and slicing or capturing and uploading BE frame data according to an inquiring result.
(2) Switching network: the method mainly realizes the network interaction function of the inbound and outbound processing of BE frame data slice cells, and outputs the slice cells to the corresponding outbound ports according to the forwarding port information.
(3) And (3) outbound processing: the method mainly takes charge of storing the sliced cells transferred out of the switching network, taking out the sliced cells according to the priority order after the whole frame storage is completed, removing frame header information to carry out BE frame reorganization, and then outputting the reorganized BE frame from a source address to a target address.
The arrow communication exchange master node sends a BE data frame to the ground front end ethernet exchange master node, and in this embodiment, the arrow communication exchange master node further has functions of converting a TT frame into a BE frame and converting a BE into a TT frame, specifically:
TT to BE: the arrow ground communication exchange main node carries out protocol processing, conversion and encapsulation on arrow TT frame data with strong real-time requirements into BE frame data, and sends the BE frame data to the ground front-end Ethernet exchange main node for real-time processing, distribution and display;
BE turns to TT: the arrow ground communication exchange master node carries out protocol processing, conversion and encapsulation on control instructions and test data sent by the ground front-end Ethernet exchange master node into TT frame data, and sends the TT frame data to the arrow ground real-time network exchange master node for injecting time slices for simulating the arrow faults.
Redundancy mechanism: the on-arrow real-time network exchange main node supports dual-port data redundancy, and dual-redundancy network ports of the on-arrow end nodes are respectively connected with 2 on-arrow real-time network exchange main nodes to form 2 identical transmission paths, so that the normal synchronization and communication of the network are not affected by any faults of the on-arrow real-time network exchange main node. In the arrow upper node, the BE data frame is sent by 2 transmission channels simultaneously, and only one transmission channel is configured for receiving in the BE data frame receiving process. Each transmission channel is provided with a scourable receiving data FIFO, and network messages in the FIFO are stored in a frame unit. When the first transmission channel is set to receive, the second transmission channel BE data frames all execute flushing operation; when the second transmission channel is set to receive, the first transmission channel BE data frames all execute flushing operation. A schematic diagram of the dual redundancy network architecture is shown in fig. 3.
Cascading mechanism: the on-arrow real-time exchange master node supports a cascade topology, and the cascade topology is formed by connecting a plurality of on-arrow real-time exchange master nodes in series, so that the networking requirement of multistage interconnection can be supported, and the access number of the end nodes is greatly increased. The arrow upper end node and the arrow upper real-time exchange main node adopt a star-shaped connection mode.
Retransmission mechanism: for the real-time exchange main node on arrow, BE data frames in the network support standard UDP and TCP protocol stacks, and support a retransmission mechanism and a handshake mechanism, so that effective transmission of data can BE ensured.
The network adopts a distributed clock synchronization mode, namely, the establishment and the maintenance of the network global clock are realized through the periodical interaction of PCF among nodes, and the synchronization precision can reach the sub microsecond (< 1 us) level, and can reach 20ns at most.
In real-time network communication, data transmission and reception operations are performed at predetermined times in a predetermined time sequence. For example, the content of a time-triggered communication can be expressed as: the message is broadcast at a system time of 20 ms. Each synchronized node in the time triggered network can only transmit and receive data at a specified time, and the periodic data transmission operation forms a time division multiple access period, namely a TDMA period. Fig. 4 shows a schematic diagram of a TDMA period. Each node transmits data using a certain period of time called a time slot within a TDMA period. Through a global clock mechanism, each node in the TTE network uses own time slot to communicate, and the communication of all nodes is not in conflict. The periodic node time slots form a TDMA period, all of which have the same time length. In a TDMA cycle, the length and content of data may be different for each transmission by a node. The multiple TDMA periods constitute a cluster period, i.e., a bus running period. The entire transmission time axis is made up of repeated cluster periods.
As shown in FIG. 5, the network supports a mixed communication mode of TT and BE data, wherein the TT data has the highest priority, and the nodes complete TT communication by adopting a preemption mechanism, so that no-conflict no-wait transmission and no-wait reception of the TT data are realized, and the instantaneity of the TT communication is ensured. The BE data priority is sequentially reduced, and transmission is required on the basis of completing TT data transmission.
In the embodiment, a) no less than 20 real-time exchange main nodes on the arrow are configured, the total number of the nodes on the upper end of the arrow which support connection is no less than 200, and the node has certain expansion capability;
b) The real-time network and the Ethernet are integrated to have a communication rate of 1Gbps, the measured TT frame is not less than 500Mbps, and the BE frame is not less than 750Mbps;
c) Bit error rate of not more than 1 x 10 -12 ；
d) Maximum transmission distance: a dielectric medium of not less than 100m and an optical medium of not less than 1km;
e) Redundancy capability: the data dual redundancy transmission capability is provided;
f) Certainty: microsecond time triggers the communication capability.
g) Link transmission delay: the 7-stage cascade link transmission delay is not more than 150us.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. The carrier rocket testing, launching and controlling network system based on the integration of the real-time network and the Ethernet is characterized by comprising N rocket-mounted real-time network switching main nodes, M rocket upper end nodes, 2 rocket ground communication switching main nodes, a ground front end Ethernet switching main node, a ground rear end Ethernet switching main node, P ground end nodes, a whole network monitoring management and data packet capturing module; n is an integer not less than 20, M and P are integers not less than 200;
each arrow upper end node is connected with 2 arrow real-time network exchange main nodes to form a first transmission channel and a second transmission channel which are completely the same, and test data and control instructions among the arrow upper end nodes are sent to the arrow real-time network exchange main nodes;
the on-arrow real-time network exchange master node adopts a TTE network protocol to communicate with the on-arrow end nodes in real time, the on-arrow real-time network exchange master node gathers and forwards test data to other on-arrow real-time network exchange master nodes and the on-arrow communication exchange master node, forwards control instructions among the on-arrow end nodes to the on-arrow end nodes, adopts a TT frame format protocol for key control instructions with high real-time certainty requirements, and adopts a BE frame format protocol for the rest; meanwhile, the on-arrow real-time network switching master node provides a standard Ethernet physical port;
the 2 arrow ground communication exchange master nodes respectively receive the first transmission channel test data and the second transmission channel test data forwarded by the arrow real-time network exchange master node, and send the received test data to the ground front-end Ethernet exchange master node through the Ethernet;
the front end Ethernet switching master node of the ground sends test data to the back end Ethernet switching master node of the ground through the Ethernet;
the ground back-end Ethernet switching master node distributes the received test data to P ground end nodes;
the ground end nodes are connected with the ground back-end Ethernet main node, and are used for receiving, processing and displaying the on-arrow test data, and transmitting the on-arrow test data to each other; the ground end node uploads a ground control instruction to the arrow upper end node through the test and launch control network system;
the whole-network monitoring management and data packet capturing module is arranged on the ground, acquires the state information of the on-arrow real-time network exchange master node and the on-arrow end node through the 2 arrow ground communication exchange master nodes, presents the arrow ground network topology and the running state in real time, captures arrow ground communication data, and acquires arrow ground bidirectional communication data in a mirror image mode.
2. The launch vehicle testing control network system based on the integration of the real-time network and the Ethernet as claimed in claim 1, wherein the real-time network on arrow switching master node, the ground communication switching master node, the ground front-end Ethernet switching master node and the ground rear-end Ethernet switching master node are all of a double-redundancy architecture.
3. The launch vehicle testing network system based on the integration of the real-time network and the Ethernet according to claim 1, wherein the upper end node of the rocket and the ground end node are both double-network port redundancy.
4. The launch vehicle testing network system of claim 1, wherein the BE frame format comprises a destination address, a source address, a type field, an IP field, a TCP or UDP message field, and the type field is used to identify the format of the data carried by the current frame.
5. The launch vehicle testing network system based on integration of real-time network and Ethernet according to claim 4, wherein BE frames support port mirroring, unicast, broadcast and static multicast functions, and support dynamic address learning and aging mechanisms; the BE frame processing mechanism includes inbound processing, switching network, and outbound processing;
and (3) inbound treatment: extracting incoming information and storing slices of BE frames input to an on-arrow real-time network switching main node, learning and ageing a forwarding table according to the incoming information, inquiring a destination port, and slicing or capturing and uploading BE frame data according to an inquiring result; the forwarding table is provided with a static multicast configuration part and a dynamic part, so that a two-layer switching function is realized;
switching network: realizing the network interaction function of the inbound and outbound of BE frame data slice cells, and outputting the slice cells to the corresponding outbound ports according to the forwarding port information;
and (3) outbound processing: and the method is responsible for storing the sliced cells transferred out of the switching network, taking out the sliced cells according to the priority order after the whole frame storage is completed, removing frame header information for BE frame reorganization, and outputting the reorganized BE frame from a source address to a target address.
6. The launch vehicle testing network system based on the integration of real-time network and Ethernet according to claim 1, wherein the on-arrow real-time network switching master node supports socket interfaces and supports FTP and Telnet protocols.
7. The launch vehicle testing control network system based on the integration of the real-time network and the Ethernet according to claim 1, wherein the rocket ground communication exchange master node is provided with a mirror image port, the whole-network monitoring management and data packet capturing module captures rocket ground communication data through the mirror image port of the rocket ground communication exchange master node, the mirror image obtains rocket ground bidirectional communication data, and the whole-network configuration, management, monitoring, packet capturing analysis and data tracing are carried out on the real-time network and the Ethernet, and the specific functions comprise:
(1) The design simulation of the network topology configuration and the network information flow of the real-time network and the Ethernet are integrated;
(2) Designing a network virtual link schedule, and detecting reachability and conflict;
(3) Network parameter online configuration, uploading and downloading, and flow mirror strategy configuration;
(4) Network running state, communication jitter, real-time monitoring of load on-line and off-line, topology state display and equipment alarm;
(5) The network exchange data source codes grasp the packet, analyze the path of the data packet, screen the data packet and log record.
8. The launch vehicle testing control network system based on the integration of the real-time network and the Ethernet according to claim 1, wherein the rocket ground communication switching master node sends BE data frames to the ground front-end Ethernet switching master node; the arrow ground communication exchange master node also has the functions of converting TT frames into BE frames and converting BE into TT frames, and specifically comprises the following steps:
TT to BE: the arrow ground communication exchange main node carries out protocol processing, conversion and encapsulation on arrow TT frame data with strong real-time requirements into BE frame data, and sends the BE frame data to the ground front-end Ethernet exchange main node for real-time processing, distribution and display;
BE turns to TT: the arrow ground communication exchange master node carries out protocol processing, conversion and encapsulation on control instructions and test data sent by the ground front-end Ethernet exchange master node into TT frame data, and sends the TT frame data to the arrow ground real-time network exchange master node for injecting time slices for simulating the arrow faults.
9. The launch vehicle testing network system based on the integration of real-time network and Ethernet according to claim 1, wherein the on-arrow real-time exchange master node supports a cascade topology, and the cascade topology is formed by connecting a plurality of on-arrow real-time exchange master nodes in series.
10. The launch vehicle testing control network system based on the fusion of the real-time network and the Ethernet according to claim 1, wherein the on-rocket real-time exchange master node, the BE data frame of the TTE network supports standard UDP and TCP protocol stacks, and supports a retransmission mechanism and a handshake mechanism.
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| CN202311583626.5A CN117768342A (en) | 2023-11-24 | 2023-11-24 | Carrier rocket testing, launching and controlling network system based on integration of real-time network and Ethernet |
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| CN202311583626.5A CN117768342A (en) | 2023-11-24 | 2023-11-24 | Carrier rocket testing, launching and controlling network system based on integration of real-time network and Ethernet |
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