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Decoding and analysis method of flight data based on arinc767 specification

A technology of flight data and analysis methods, applied in the aviation field, can solve problems such as inability to support data decoding, and achieve the effects of increasing use costs, saving trial decoding time and manual configuration time

Active Publication Date: 2019-08-13
海航航空技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional decoding software can no longer support the decoding of ARINC767-standard data, and a new algorithm needs to be established to perfectly adapt to the decoding of new data

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  • Decoding and analysis method of flight data based on arinc767 specification

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiments.

[0016] The purpose of decoding is to convert binary flight data files into identifiable engineering values. Since the flight data based on the ARINC767 specification is completely different from the traditional one, the decoding algorithm is also very different.

[0017] The flight data decoding and analysis method based on ARINC767 specification of the present invention, such as figure 1 shown, including steps:

[0018] Step s101, acquiring flight data based on ARINC767 specification.

[0019] Flight data refers to the flight data downloaded from the aircraft data recording system, and its format is a binary file. For the 787 aircraft, there are three types of flight data, one is the EAFR (Enhanced Airborne Flight Recorder) data downloaded through the maintenance notebook ML, and the other is the CPL ( Continuous Parameter Logging) data, the other is the CPL data trans...

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Abstract

The invention discloses a flight data decoding analysis method based on the ARINC767 specification. According to the data record characteristics of the ARINC767 specification, an appropriate decoding library is matched for flight data to complete decoding. Users do not need to have an in-depth understanding of the structure of data and the type of a decoding library. The decoding analysis method of the invention will continue trying until the completion of decoding. After trial decoding succeeds, the current configuration will be updated to backend default configuration. For the processing of a large amount of homogenous data, a lot of trial decoding time and manual configuration time can be saved.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to a method for decoding and analyzing flight data based on ARINC767 specification. Background technique [0002] The traditional flight data recording specification ARINC573 / ARINC717 / ARINC747 is based on subframes, each subframe is one second, 4 subframes form a frame, and the word slot is 12 data bits. The new 787 aircraft completely abandons the concepts of subframes, word slots, and superframes, and introduces a new data recording specification ARINC767. Based on the parameter collection frequency, the parameters are grouped, the group is called "Frame", the synchronization word of the frame is EB90, the parameters in each frame are the same collection rate, and recorded sequentially, without the word slot. concept. A frame is no longer a second, but the concept of "timestamp" is introduced to judge the sequence and recording time of each frame. [0003] Traditional decodin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L69/03H04L69/26H04L2012/4028
Inventor 黄珑刘艳姜文波陈一贵牛旭强陈欢刘永庆
Owner 海航航空技术有限公司