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Protocol analysis method suitable for multiple buses

A protocol analysis and bus technology, applied in the field of aerospace system data communication, can solve the problems of not including frame headers and framing packet loss, and achieve the effect of strong shift and high efficiency

Active Publication Date: 2021-01-15
TIANJIN JINHANG COMP TECH RES INST
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Problems solved by technology

Similarly, Ethernet usually adopts the UDP protocol, which does not consider issues such as framing packet loss, so the protocol design usually does not include frame headers, frame bit checks, etc. Similarly, when the bus is replaced or transferred to other systems, the bus protocol needs to be redesigned

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  • Protocol analysis method suitable for multiple buses

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Embodiment Construction

[0021] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] In order to unify the different forms of buses in the communication process between devices, different communication protocols are used. The traditional system design seldom considers the unity of communication protocols between devices, which often leads to the replacement of hardware buses and the need to modify the bus protocol. This paper proposes a general bus protocol, which can be used in CAN bus protocol and serial port 422 bus protocol. Serial port 485 bus protocol, Ethernet UDP protocol, Ethernet TCP protocol, etc., combined figure 1 Describe the analysis method of this general protocol, specifically including the following steps:

[0023] STEP1: Design a general communication protocol

[0024] The p...

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Abstract

The invention discloses a protocol analysis method suitable for multiple buses, and the method does not need to redesign a protocol when a bus is changed or a system is transported, thereby improvingthe adaptability between systems. The protocol and the protocol analysis method provided by the invention are suitable for various buses, the bus protocol design and analysis method is separated fromthe characteristics of a bus physical layer, and the protocol design and analysis method has higher efficiency and stronger transportability.

Description

technical field [0001] The invention belongs to the technical field of aerospace system data communication, and relates to a protocol analysis method applicable to various buses. Background technique [0002] There are many common buses in aerospace systems, such as CAN bus, serial port, Ethernet UDP protocol, Ethernet TCP protocol, etc. The above-mentioned communication buses are all serial communication buses. The restoration and recovery of data on the serial bus is protocol analysis, which is usually a bus application layer message, and the data on the bus is restored to the greatest extent by applying mechanisms such as packetization, framing, and fault tolerance. Contents of the invention [0003] (1) Purpose of the invention [0004] In the field of aerospace, there are many bus methods for communication between systems. Common buses include serial port 422 bus, CAN bus, and Ethernet. Different bus habits define different protocols. For example, each CAN frame data...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/40H04L1/00
CPCH04L69/22H04L69/18H04L1/0061H04L12/40H04L69/06
Inventor 王雨龙
Owner TIANJIN JINHANG COMP TECH RES INST
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