CN107770100B - Test, launch and control redundancy network architecture and redundancy method - Google Patents
Test, launch and control redundancy network architecture and redundancy method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/552—Prevention, detection or correction of errors by ensuring the integrity of packets received through redundant connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
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Abstract
A test, launch and control redundant network architecture and redundancy method, the architecture includes many redundant networks, network front-end apparatus and network back-end apparatus; the multi-redundancy network provides a communication link for information interaction between the network front-end equipment and the network back-end equipment; the network front-end equipment is connected with the aircraft and the launching support system and is connected with the network rear-end equipment through a multi-redundancy network to complete the aircraft pre-launching test and launching control; the network back-end equipment comprises equipment arranged far away from a transmitting point, and comprises network back-end testing equipment and a network equipment monitoring and front-end equipment management unit which are necessary for executing a test transmitting control task. The invention adopts a real-time fault switching strategy to realize the quick recovery of the switch fault and simplify the link configuration work, and provides a recovery means for the fault of the front-end equipment so as to meet the requirements of the current quick test and transmission task.
Description
Technical Field
The invention relates to a high-reliability fast-recovery test, launch and control redundant network architecture design, and belongs to the field of aircraft test and control.
Background
The test launch control system is an important guarantee system for aircraft development and test flight and is used for completing test and launch control tasks of each stage of the aircraft. The current increasingly intensive space launching tasks put forward higher requirements on the rapid test launching technology, and a reliable test launch control network system capable of being rapidly recovered is a necessary condition for ensuring the complete of the test and launch control tasks, and provides guarantee for the rapid test and launch of the aircraft.
The existing test, launch and control network system generally adopts a front-end and back-end architecture and an automatic test mode, wherein the front end mostly adopts an unattended mode. Various schemes have been implemented for the test, transmission and control redundant network of the front-end and back-end architecture, including a main and standby link scheme, a dual-machine hot-backup scheme in which the main and standby links use a hot-backup router protocol (HSRP), a scheme in which the main and standby links use HSRP and a fast spanning tree protocol (RSTP), and the like. The redundant network scheme is applied to aerospace missions, but the following defects are found in the practical process: 1) the switch fault detection and the main-standby machine switching time on the link are long, so that a large amount of data is lost; 2) the link configuration process is complex; 3) and when the front-end main/standby switch fails at the same time, a recovery means is lacked.
As mentioned above, the existing solutions are difficult to satisfy the requirements of fast testing and launching for high reliability and fast recovery of the testing and launching control system.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method overcomes the defects of the prior art, provides a high-reliability quick-recovery test, launch and control multi-redundancy network architecture design, adopts a real-time fault switching strategy, realizes quick recovery of switch faults, simplifies link configuration work, and provides a recovery means for front-end equipment faults so as to meet the requirements of the current quick test and launch tasks.
The technical scheme of the invention is as follows: a high-reliability fast-recovery test, launch and control redundant network architecture comprises a multi-redundant network, network front-end equipment and network back-end equipment; the multi-redundancy network provides a communication link for information interaction between the network front-end equipment and the network back-end equipment; the network front-end equipment is connected with the aircraft and the launching support system and is connected with the network rear-end equipment through a multi-redundancy network to complete the aircraft pre-launching test and launching control; the network back-end equipment comprises equipment arranged far away from a transmitting point, and comprises network back-end testing equipment and a network equipment monitoring and front-end equipment management unit which are necessary for executing a test transmitting control task.
The multi-redundancy network consists of a double-redundancy network channel and an emergency network channel based on a virtual switching system, wherein the double-redundancy network channel and the emergency network channel are independent and parallel network channels; the dual redundant network channels are used for transmitting test data and control command information between the network front-end equipment and the network back-end equipment; the emergency network channel is used for monitoring state information of the front-end equipment and the network equipment, and the rear-end test launch control system equipment management unit completes remote control on the front-end equipment through the emergency channel in the emergency state.
The dual redundant network channel comprises a main front-end switch, a main back-end switch and a plurality of optical fibers connected with the front-end switch and the back-end switch; the front-end main and standby switches are respectively connected with the front-end equipment, and the rear-end main and standby switches are respectively connected with the rear-end equipment.
The emergency network channel comprises an emergency channel front-end switch, an emergency channel rear-end switch and an optical fiber connected with the front-end switch and the rear-end switch; the emergency channel front-end switch is connected with front-end equipment; the emergency channel front-end switch is connected with the back-end equipment.
The front-end equipment is unattended equipment and comprises front-end test equipment, a data processing server and a front-end add-drop control unit, and the front-end test equipment, the data processing server and the front-end add-drop control unit are connected with a front-end network switch of the multi-redundancy network;
the front-end test equipment is connected with the aircraft and the launching support system in a wired or wireless mode, is connected with the data processing server through the front-end switch, finishes aircraft test data acquisition, sends data to the data processing server, receives a test launching control instruction from the data processing server, and sends the data to the aircraft and the launching support system after processing;
the data processing server is connected with the front-end test equipment and the network rear-end test equipment through a dual redundant network, receives the data of the front-end test equipment and the test emission control command sent by the rear-end test equipment, completes data storage and real-time processing, sends test data processing result information to the rear-end equipment, and forwards the test emission control command to the front-end test equipment;
the front-end power adding and removing control unit is used for controlling the adding and removing of the network front-end equipment, is connected with the network equipment monitoring and front-end equipment management unit at the rear end through an emergency network channel, receives a front-end equipment power adding and removing control instruction sent by the network equipment monitoring and front-end equipment management unit at the rear end, controls the on-off of the power supply of the front-end equipment according to the instruction content, and completes the power adding and removing of the front-end equipment.
The front-end test equipment and the data processing server are both provided with double network cards and bound by adopting the double network cards, and the double network cards are respectively connected with a front-end main switch and a front-end standby switch of the double redundant network to complete the bidirectional communication between the front-end test equipment and the data processing server.
The front-end test equipment pushes test data acquired from the aircraft to a front-end data processing server in real time, and a transmission protocol adopts a UDP packet protocol with a preset format; the front-end test equipment receives a test emission control instruction from a data processing server, and a transmission protocol adopts a TCP (transmission control protocol) with a preset format; the data processing server realizes data bidirectional communication with the back-end test equipment through a dual redundant network; the data processing server transmits processing result data to the back-end testing equipment according to the data request of the back-end testing equipment, and a transmission protocol adopts a UDP packet protocol with a preset format; the data processing server receives test emission control instruction data initiated by the back-end test equipment, and sends a control command to the corresponding front-end test equipment after processing and decomposition, and a data transmission protocol between the data processing server and the back-end test equipment adopts a TCP (transmission control protocol) with a preset format; the predetermined format UDP protocol packet comprises a source address, an information destination address, an information category, a data domain length and a data domain, and the predetermined format TCP transmission protocol comprises a frame head, a source address, an information destination address, an information category, a data domain length, a data domain and a frame tail.
The processing flow of data processing of the data processing server is as follows:
test data processing flow: the data processing server receives the test data from each front-end test device and then stores the test data in the hard disk in real time; the data processing server processes the test data in real time, generates a processing result with physical significance and caches the processing result in the memory, takes out the corresponding processing result from the memory after receiving a data request sent by the back-end test equipment, packages the processing result into a UDP protocol packet according to a preset format and sends the UDP protocol packet to the corresponding back-end test equipment;
the test emission control instruction processing flow comprises the following steps: the data processing server receives a test emission control instruction from the rear-end test equipment and then stores the test emission control instruction in the hard disk in real time; processing and decomposing the control instruction according to the content of the control instruction, generating a corresponding front-end test equipment control instruction sequence, and sending the corresponding control instruction to corresponding front-end test equipment according to a preset flow;
the network back-end equipment comprises back-end test equipment and a network equipment monitoring and front-end equipment management unit; the network back end test equipment comprises back end display equipment and a control computer; the rear-end display equipment is connected with the data processing server at the front end through a dual redundant network, and aircraft test data are obtained from the data processing server and are used for monitoring the test state by an operator; the control computer is connected with the data processing server at the front end through a dual redundant network, an operator sends a test emission control instruction to the data processing server through the control computer according to task needs, and the data processing server completes the processing and the distribution execution of the test emission control instruction; the network equipment monitoring and front-end equipment management unit is connected with the multi-redundancy network through the network, receives and displays the working state information of the front-end equipment and the working state information of the network switch from the front end to realize the real-time monitoring of the network and the front-end equipment, can send out power-on and power-off control instructions of the front-end equipment through the control of an operator, and transmits the power-on and power-off control instructions to the front-end power-on and power-off control unit through an emergency network channel to realize the power-on and power-off of the front.
A high-reliability quick-recovery test transmission control redundancy method comprises the following steps:
1) the aircraft test data is collected by the front-end test equipment and transmitted to the front-end data processing server in a preset format for data processing and parameter analysis, and is transmitted to the rear-end test equipment through the dual redundant network according to the preset format for display;
2) the aircraft test control instruction is sent by the rear-end test equipment in a preset format, is transmitted to the front-end data processing server through the dual redundant network for processing and analysis, forms a front-end test equipment control instruction, and then is distributed to the relevant front-end test equipment in the preset format to complete the aircraft test and launching process control;
3) the working state information of all the front-end equipment and the network equipment is generated by each equipment and is transmitted to a network equipment monitoring and front-end equipment management unit arranged at the rear end through a dual redundant network for monitoring;
4) the front-end equipment management instruction is generated by the network equipment monitoring and front-end equipment management unit and is transmitted to the power-on and power-off control unit of the front end in a preset format through the emergency network channel, so that the power-on and power-off control of the front-end equipment is realized.
Compared with the prior art, the invention has the beneficial effects that:
(1) the test, launch and control multi-redundancy network architecture constructed by the invention provides a reliable link for information interaction between the front-end test equipment and the rear-end test equipment, manages the front-end test equipment through an emergency network, and meets the unattended use requirement of the front-end equipment;
(2) the data transmission main channel in the multi-redundancy network adopts a switch stacking technology and a Virtual Switching System (VSS) technology, and compared with the currently applied main and standby link network redundancy scheme adopting an HSRP + RSTP technology, the configuration is simple, and the fault switching is quicker;
(3) the data processing server preposition scheme adopted by the invention reduces the interactive information data volume of the test equipment between the front end and the back end, reduces the load of the network switch between the front end and the back end, and ensures the reliability of data transmission;
(4) the front-end equipment management scheme adopted by the invention effectively improves the system reliability under the unattended condition of the front-end equipment.
Drawings
FIG. 1 is a test, issue, control, redundancy network architecture;
FIG. 2 is a schematic diagram of connection between a dual network card front-end device and a network host/standby channel
FIG. 3 is a schematic diagram of an emergency channel network connection;
FIG. 4 is a network monitoring data flow diagram;
FIG. 5 is a front-end device management flow;
FIG. 6 is a diagram of a working state and a chain supervision packet format;
fig. 7 is a main/standby switching flow;
FIG. 8 is a data processing information flow;
fig. 9 is a data processing flow.
FIG. 10 is a flowchart of a test flow management program.
Fig. 11 is a schematic diagram of an application layer information transmission protocol header when UDP transmission is adopted.
Fig. 12 is a schematic diagram of an application layer information transmission protocol header when TCP transmission is adopted.
Detailed Description
The test, launch and control redundant network architecture comprises a multi-redundant network, network front-end equipment and network back-end equipment. The front-end equipment comprises front-end testing equipment, a data processing server and a front-end add-and-go control unit, the network back-end equipment comprises network back-end testing equipment and a network equipment monitoring and front-end equipment management unit, and the multi-redundancy network consists of a data transmission main channel and an emergency network, as shown in figure 1.
The data transmission main channel is a dual-redundancy main and standby hot backup network based on a virtual switching system technology, two switches and corresponding connecting cables are arranged at the front end and the rear end, the two main and standby hot backup switches at the front end and the rear end are respectively connected through two stacking lines by utilizing a stacking technology to form a virtual switch, and a high-bandwidth dual-redundancy information interaction channel for information exchange of front-end and rear-end equipment is provided; the front-end and back-end switches are connected through a plurality of optical fibers, a Gigabit Ethernet Channel (GEC) is formed by adopting a port convergence technology, the transmission bandwidth and the link redundancy of a transmission link between front-end and back-end equipment are improved, and the reliability is improved. The front-end equipment and the back-end equipment are respectively connected with a main switch and a standby switch of the front-end switch and the back-end switch after the double network cards are bound by adopting the Teaming technology to form a double redundant network, and a schematic diagram is shown in figure 2.
The emergency network channel is an independent network channel independent of the data transmission main channel dual redundant network, and is used for monitoring and managing the front-end equipment so as to meet the unattended requirement of the front-end equipment, as shown in fig. 3. The emergency network channel transmits the working state information of the front-end equipment and the switch, and the front-end equipment and the switch generate the state information and transmit the state information to the network equipment monitoring and front-end equipment management unit through the emergency channel. The network monitoring adopts a Simple Network Management Protocol (SNMP), the SNMP protocol is configured on equipment such as a network switch, a front-end server and the like, network monitoring and equipment management software is operated on the front-end equipment network monitoring and front-end management equipment, the operation states of the network equipment and the front-end equipment are acquired, analyzed and displayed, and the equipment is controlled. The monitoring information flow is shown in fig. 4.
When the main and standby front-end switches are in failure, the back-end network equipment monitors and the front-end management equipment manages and controls each piece of unattended front-end equipment, so that the working state of the front-end equipment is recovered, and the reliability of the system is improved. The management policy is as follows: when the equipment management equipment at the rear end monitors the fault of the front-end equipment, a reset instruction is sent to the front-end fault equipment through the emergency channel to enable the front-end fault equipment to be recovered to a working state, if the reset is unsuccessful, the power-off instruction of the fault machine is sent to the front-end power-off control equipment, the power supply of the fault machine is cut off, then the power supply instruction of the fault machine is sent to the front-end power-off control equipment, the power supply of the fault machine is recovered, the fault machine is recovered to the working state after being started in a cold mode, and the control flow is shown.
Each single machine at the front end adopts a main/standby hot backup working mode, and main/standby switching is carried out when a main machine fails, wherein the switching process is as follows: the master-slave machine sends the running state and the chain monitoring information (as shown in fig. 6) to the front-end server at regular time through the front-end switch, the front-end server arbitrates and switches the master-slave configuration of the single machine, and simultaneously sends the running state, the master-slave configuration state, the alarm state and the like of each device to the network device monitoring and front-end management device at the rear end for decision-making of a rear-end operator. When the n host of the front-end equipment fails, the front-end server receives the n host failure information of the equipment or cannot receive the running state and the chain monitoring information of the n host of the front-end equipment for a long time, the n host failure of the equipment is judged, a main-standby machine switching process is started, the original host is switched into a standby machine, the standby machine is switched into a host, and the switching of the failed machine is completed. The master-slave switching flow is shown in fig. 7.
The data processing server is arranged at the front end and runs a data processing and test flow management program. The data processing program collects and stores all data and states generated by all the extensions at the front end, and sends customized information to the rear end display terminal according to the rear end request, thereby reducing the network traffic at the front end and the rear end, reducing the network frame loss rate, and the information flow of the data processing program is shown in fig. 8, and the processing flow is shown in fig. 9. The test flow management program runs on the server, reads and loads a plurality of predefined task flow configuration files after the program is started, generates a task flow list, and periodically transmits list summary information to the back-end control terminal for previewing. The task front server receives a task loading command sent by the rear-end control terminal, selects a task flow appointed by the loading control terminal, receives control commands such as task starting, task suspending and task terminating, automatically sends the control command to each front-end device according to flow configuration information, receives feedback of each device and achieves automatic scheduling. A test flow management program flow diagram is shown in fig. 10. As described above, the test flow management program transmits the summary information of the task flow to the back end before the test task, and only receives simple commands of the back end control terminal, such as a task loading command, a task starting command, a task suspending command, a task terminating command, and the like, during the test process, and the control commands of the front end devices are directly sent by the front end server, so that the interaction of the front end information and the back end information is reduced, and the control delay in the flow is reduced.
Different types of data adopt different transmission protocols according to different data integrity requirements, the back-end display information adopts a UDP transmission mode, the back-end control information adopts a TCP transmission mode, and the transmission protocols are customized, so that the reliability of information transmission is guaranteed. Fig. 11 and 12 show the header of the application layer information transmission protocol in UDP and TCP transmission, respectively.
Those skilled in the art will appreciate that the details of the invention not described in detail in the specification are within the skill of those skilled in the art.
Claims (8)
1. A high-reliability quick-recovery testing, transmitting and controlling redundant network system is characterized in that: the system comprises a multi-redundancy network, network front-end equipment and network back-end equipment; the multi-redundancy network provides a communication link for information interaction between the network front-end equipment and the network back-end equipment; the network front-end equipment is connected with the aircraft and the launching support system and is connected with the network rear-end equipment through a multi-redundancy network to complete the aircraft pre-launching test and launching control; the network back-end equipment comprises equipment arranged far away from a transmitting point, and comprises network back-end testing equipment and a network equipment monitoring and front-end equipment management unit which are necessary for executing a test transmitting control task;
the front-end equipment is unattended equipment and comprises front-end test equipment, a data processing server and a front-end add-drop control unit, and the front-end test equipment, the data processing server and the front-end add-drop control unit are connected with a front-end network switch of the multi-redundancy network;
the front-end test equipment is connected with the aircraft and the launching support system in a wired or wireless mode, is connected with the data processing server through the front-end switch, finishes aircraft test data acquisition, sends data to the data processing server, receives a test launching control instruction from the data processing server, and sends the data to the aircraft and the launching support system after processing;
the data processing server is connected with the front-end test equipment and the network rear-end test equipment through a dual redundant network, receives the data of the front-end test equipment and the test emission control command sent by the rear-end test equipment, completes data storage and real-time processing, sends test data processing result information to the rear-end equipment, and forwards the test emission control command to the front-end test equipment;
the front-end power adding and removing control unit is used for controlling the adding and removing of the network front-end equipment, is connected with the network equipment monitoring and front-end equipment management unit at the rear end through an emergency network channel, receives a front-end equipment power adding and removing control instruction sent by the network equipment monitoring and front-end equipment management unit at the rear end, controls the on-off of the power supply of the front-end equipment according to the instruction content, and completes the power adding and removing of the front-end equipment.
2. The system according to claim 1, wherein the system further comprises: the multi-redundancy network consists of a double-redundancy network channel and an emergency network channel based on a virtual switching system, wherein the double-redundancy network channel and the emergency network channel are independent and parallel network channels; the dual redundant network channels are used for transmitting test data and control command information between the network front-end equipment and the network back-end equipment; the emergency network channel is used for monitoring state information of the front-end equipment and the network equipment, and the rear-end test launch control system equipment management unit completes remote control on the front-end equipment through the emergency channel in the emergency state.
3. The system according to claim 2, wherein the system further comprises: the dual redundant network channel comprises a main front-end switch, a main back-end switch and a plurality of optical fibers connected with the front-end switch and the back-end switch; the front-end main and standby switches are respectively connected with the front-end equipment, and the rear-end main and standby switches are respectively connected with the rear-end equipment.
4. The system according to claim 2, wherein the system further comprises: the emergency network channel comprises an emergency channel front-end switch, an emergency channel rear-end switch and an optical fiber connected with the front-end switch and the rear-end switch; the emergency channel front-end switch is connected with front-end equipment; the emergency channel front-end switch is connected with the back-end equipment.
5. The high-reliability fast-recovery testing, dispatching and controlling redundancy network system according to claim 1, wherein: the front-end test equipment and the data processing server are both provided with double network cards and bound by adopting the double network cards, and the double network cards are respectively connected with a front-end main switch and a front-end standby switch of the double redundant network to complete the bidirectional communication between the front-end test equipment and the data processing server.
6. The system according to claim 5, wherein the system further comprises: the front-end test equipment pushes test data acquired from the aircraft to a front-end data processing server in real time, and a transmission protocol adopts a UDP packet protocol with a preset format; the front-end test equipment receives a test emission control instruction from a data processing server, and a transmission protocol adopts a TCP (transmission control protocol) with a preset format; the data processing server realizes data bidirectional communication with the back-end test equipment through a dual redundant network; the data processing server transmits processing result data to the back-end testing equipment according to the data request of the back-end testing equipment, and a transmission protocol adopts a UDP packet protocol with a preset format; the data processing server receives test emission control instruction data initiated by the back-end test equipment, and sends a control command to the corresponding front-end test equipment after processing and decomposition, and a data transmission protocol between the data processing server and the back-end test equipment adopts a TCP (transmission control protocol) with a preset format; the predetermined format UDP protocol packet comprises a source address, an information destination address, an information category, a data domain length and a data domain, and the predetermined format TCP transmission protocol comprises a frame head, a source address, an information destination address, an information category, a data domain length, a data domain and a frame tail.
7. The system according to claim 6, wherein the system further comprises: the processing flow of data processing of the data processing server is as follows:
test data processing flow: the data processing server receives the test data from each front-end test device and then stores the test data in the hard disk in real time; the data processing server processes the test data in real time, generates a processing result with physical significance and caches the processing result in the memory, takes out the corresponding processing result from the memory after receiving a data request sent by the back-end test equipment, packages the processing result into a UDP protocol packet according to a preset format and sends the UDP protocol packet to the corresponding back-end test equipment;
the test emission control instruction processing flow comprises the following steps: the data processing server receives a test emission control instruction from the rear-end test equipment and then stores the test emission control instruction in the hard disk in real time; and processing and decomposing the control instruction according to the content of the control instruction, generating a corresponding front-end test equipment control instruction sequence, and sending the corresponding control instruction to corresponding front-end test equipment according to a preset flow.
8. The high reliability fast recovery testing, dispatching and controlling redundancy network system according to any one of claims 5-7, wherein: the network back-end equipment comprises network back-end testing equipment and a network equipment monitoring and front-end equipment management unit; the network back end test equipment comprises back end display equipment and a control computer; the rear-end display equipment is connected with the data processing server at the front end through a dual redundant network, and aircraft test data are obtained from the data processing server and are used for monitoring the test state by an operator; the control computer is connected with the data processing server at the front end through a dual redundant network, an operator sends a test emission control instruction to the data processing server through the control computer according to task needs, and the data processing server completes the processing and the distribution execution of the test emission control instruction; the network equipment monitoring and front-end equipment management unit is connected with the multi-redundancy network through the network, receives and displays the working state information of the front-end equipment and the working state information of the network switch from the front end to realize the real-time monitoring of the network and the front-end equipment, can send out power-on and power-off control instructions of the front-end equipment through the control of an operator, and transmits the power-on and power-off control instructions to the front-end power-on and power-off control unit through an emergency network channel to realize the power-on and power-off of the front.
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