remote data concentrator

A remote data and concentrator technology, applied in the direction of selection devices, transmission systems, electrical components, etc., can solve the problems of opaque internal design, unfavorable autonomous control of the aviation industry, etc., to reduce forwarding time, improve forwarding performance, and reduce complexity and scheduling effects

Active Publication Date: 2021-07-09
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] my country's self-designed civil aircraft C919 uses a large number of remote data interface units, but the products are all derived from foreign shelf products and the internal design is not transparent, which is not conducive to the independent control of the aviation industry

Method used

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] The underlying modules of the remote data concentrator shown in this embodiment include an ARINC429 logic module and an ARINC825 communication module.

[0029] The ARINC429 logic module contains several ARINC429 receiving modules, see figure 2 As shown, each ARINC429 receiving module is used to receive one channel of ARINC429 data, and the ARINC429 receiving module includes ARINC429 data receiving logic, ARINC429 receiving FIFO, ARINC429 dual-port BRAM and data flow control module.

[0030] The ARINC429 data receiving logic is used to receive the ARINC429 data frame coming from the ARINC429 bus, and store the ARINC429 data frame into the ARINC429 receiving FIFO.

[0031] ARINC429 dual-port BRAM internally divides 256 address buffer areas according to the label number (label number) of each ARINC429, and the size of each buffer area is...

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Abstract

The invention discloses a remote data concentrator, comprising ARINC429 data receiving logic, ARINC429 receiving FIFO, ARINC429 dual-port BRAM and data flow control module, ARINC429 data receiving logic is used to store data frames into ARINC429 receiving FIFO; data flow control module It is used to judge whether there is an ARINC429 data frame inside the ARINC429 receiving FIFO, and if so, read the data frame, and store the data into the corresponding buffer address of the ARINC429 dual-port BRAM according to the tag number in the data frame, and give the corresponding information to the upper layer software The tag number has data identification; when the data flow direction control module receives a data frame request from the upper layer software for a tag number, it reads the data frame from the corresponding buffer address of the ARINC429 dual-port BRAM and sends it to the upper layer software. The invention shortens the forwarding time of the upper layer software.

Description

technical field [0001] The invention relates to the field of avionics products, in particular to a remote data concentrator, which improves data forwarding efficiency by changing the cache structure. Background technique [0002] Remote Data Concentrator (RDC), first proposed by Boeing, is currently widely used in civil aircraft, transport aircraft and other avionics systems. Both A380 and B737 use this technology. In the context of the highly integrated aircraft avionics system (IMA architecture), more and more aircraft have adopted the remote data interface unit. The remote data interface unit is an important data node all over the aircraft, which replaces the traditional dedicated signal It facilitates the separation of components, minimizes the wiring and weight of subsystems, sensors, and effectors, and is easy to update the system. It is of great significance to the reliability, maintainability, and versatility of aviation systems. [0003] RDC products will include A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04Q1/02
CPCH04B1/16H04Q1/028
Inventor 陈栋吉沛琦谭永亮李修杰袁泉
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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