Unlock instant, AI-driven research and patent intelligence for your innovation.

Avionics device AFDX bus and A429 and RS422 bus data conversion method

A technology of RS422 and conversion method, applied in the field of avionics system

Inactive Publication Date: 2019-01-18
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a conversion method between AFDX bus and A429, RS422 bus, in order to solve the problem of data format conversion between buses with different rates and different bandwidths in the avionics system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Avionics device AFDX bus and A429 and RS422 bus data conversion method
  • Avionics device AFDX bus and A429 and RS422 bus data conversion method
  • Avionics device AFDX bus and A429 and RS422 bus data conversion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] see figure 1 As shown, it is the AFDX protocol format definition. In the AFDX protocol format definition, each AFDX message block includes a dataset bit and its corresponding FSB bit. The dataset bit is used to store valid data, and its corresponding FSB bit identifies the validity of the dataset. The definition of FSB bit is as follows:

[0023]

[0024] see Figure 2 to Figure 6 shown, where figure 2 Defined for the A429 protocol format, Figure 3 to Figure 6 Frame formats defined for different RS422 devices.

[0025] see Figure 7 and Figure 8 As shown, implementing the avionics equipment bus protocol data conversion method of the present invention comprises the following steps:

[0026] (1) Generate a configuration table, which includes gateway function configuration (Gateway Config) information, AFDX end system link configuration (EndSystem Config) information and data bus interface configuration (Digital IO Config) information, wherein the gateway funct...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention reveals an AFDX bus and A429 and RS422 bus data conversion method, and the method comprises the following steps: (1), generating a configuration table which includes gateway function configuration information, AFDX end system link configuration information and data bus interface configuration information; (2), receiving A429 and RS422 data according to the data bus interface configuration information in the configuration table; (3), polling all the conversion links configured in the gateway function configuration information after receiving the A429 and RS422 data; (4), polling an AFDX port configured by the link configuration information of the AFDX end system in the polling configuration table after all the conversion links are completed, and transmitting the AFDX data.

Description

【Technical field】 [0001] The invention belongs to the field of avionics systems, and in particular relates to a data conversion method between an avionics equipment AFDX bus and A429 and RS422 buses. 【Background technique】 [0002] In the avionics system, there is a large amount of data information exchange among various sub-systems such as mission aircraft, display and control system, communication and navigation, and each sub-system is cross-linked with the bus through its own interface to realize resource sharing to meet the needs of high-speed communication. A computer network with a certain hierarchical structure. [0003] The new-generation avionics system network generally uses new high-speed and high-bandwidth buses such as AFDX and FC as the backbone network. At the same time, a large number of avionics devices are connected to the backbone network with low-speed but very reliable buses such as A429 or RS422. Since these buses with different speeds and different ba...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L29/06H04L12/40
CPCH04L12/40078H04L69/06H04L69/08H04L2012/40208
Inventor 杨鑫博
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST