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Rocket-borne Ethernet communication method and communication system

An Ethernet and arrow-borne technology, applied in wireless communication, vehicle wireless communication services, and large-scale transportation vehicles, can solve problems such as prone to failure and poor reliability, so as to improve reliability and increase real-time Detection effect

Pending Publication Date: 2021-02-02
CHINA ACAD OF LAUNCH VEHICLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional launch vehicle flight control communication is prone to failure and poor reliability

Method used

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  • Rocket-borne Ethernet communication method and communication system
  • Rocket-borne Ethernet communication method and communication system
  • Rocket-borne Ethernet communication method and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 A schematic flow chart showing the implementation of the on-board Ethernet communication method in Embodiment 1 of the present application is shown.

[0037] As shown in the figure, the arrow-borne Ethernet communication method includes:

[0038] Step 101, when Ethernet communication requires time accuracy TAcc<control period T, the flight control software as the master node completes the framing of the Ethernet protocol frame according to the data format;

[0039] Step 102: Send the Ethernet protocol frame to other devices as slave nodes, receive and verify the Ethernet protocol frame responded by other devices, and record the timestamp information of the sending time and receiving time in the reliable communication global structure array ;

[0040] Step 103, according to the timer interrupt, determine that the Ethernet protocol frame sending flag is valid and the difference between the current timestamp information and the timestamp information at the time ...

Embodiment 2

[0061] Based on the same inventive concept, an embodiment of the present application provides an arrow-borne Ethernet communication system. The principle of solving technical problems of the system is similar to that of an arrow-borne Ethernet communication method, and the repetitions will not be repeated here.

[0062] figure 2 A schematic structural diagram of an arrow-borne Ethernet communication system in Embodiment 2 of the present application is shown.

[0063] As shown in the figure, the arrow-borne Ethernet communication system includes: flight control software and other equipment, the flight control software is used as a master node for sending instructions, and other equipment is used as a slave node for responding to the instructions; the flight control software It includes at least two Ethernet ports with other devices and is connected to the same switch;

[0064] When Ethernet communication requires time accuracy TAcc

Embodiment 3

[0069] image 3 A schematic flow chart showing the implementation of the on-board Ethernet communication method in Embodiment 3 of the present application is shown.

[0070] As shown in the figure, the arrow-borne Ethernet communication method includes:

[0071] Step 301, when Ethernet communication requires time accuracy TAcc≥control period T, the flight control software as the master node completes the framing of the Ethernet protocol frame according to the data format;

[0072] Step 302, sending the Ethernet protocol frame when the number of retransmissions is less than or equal to the preset second number of retransmissions, blocking the semaphore in the semaphore array according to the type of the Ethernet protocol frame sent this time; receiving and verifying the Ethernet protocol Frame, and after the verification is passed, the semaphore in the semaphore array is released according to the type of the Ethernet protocol frame; if the semaphore is within the preset thresh...

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PUM

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Abstract

The invention discloses a rocket-borne Ethernet communication method and communication system. The rocket-borne Ethernet communication method comprises the following steps that: flight control software and other equipment respectively comprise at least two Ethernet ports and are hung on the same switch, wherein the flight control software is used as a master node for sending an instruction, and other devices are used as slave nodes for responding to the instruction; when the time precision TAcc required by Ethernet communication is smaller than the control period T, a rocket-borne redundant Ethernet reliable communication method based on a high-precision timestamp is adopted; when the Ethernet communication requires that the time precision TAcc is greater than or equal to the control period T, a rocket-borne redundant Ethernet reliable communication method based on the semaphore is adopted. By adopting the system disclosed in the scheme of the invention, once a problem occurs, the standby network can be switched in time, and the reliability of rocket-borne bus communication is significantly improved.

Description

technical field [0001] The present application relates to carrier rocket communication technology, in particular, to an rocket-borne Ethernet communication method and a communication system. Background technique [0002] The traditional type of launch vehicle communication generally uses CAN bus or 1553B bus for bus communication, the communication rate is low and the scalability is not strong. The rocket-borne Ethernet has the advantages of low price, strong scalability, and fast transmission rate. However, Ethernet transmission is limited. Due to the influence of transmission conditions and communication protocols, errors such as frame loss or bit errors may occur. [0003] Problems existing in the prior art: [0004] Traditional launch vehicle flight control communication is prone to failure and has poor reliability. Contents of the invention [0005] Embodiments of the present application provide an arrow-borne Ethernet communication method and a communication system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/42H04W36/14H04W36/30
CPCH04W4/42H04W36/14H04W36/30
Inventor 李浩张亚琳胡骁潘彦鹏张雪婷陈旭东吕瑞涂海峰严大卫陈喆葛云鹏梁卓宋志国年永尚阳丰俊蔡亚楠王凯旋李迎博薛晨琛杨立杰谭黎立李烨丁禹赵楠陈铁凝郝仁杰邱岳诗孟文霞谭清科姜春旺杜肖
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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