Curve playback method and system for avionics data

Abstract

The invention discloses an avionics data curve play method and system. The method comprises the steps of directly drawing a fitted curve when the total data quantity of the avionics data is less than or equal to a screen pixel quantity; selecting two avionics data with closest transverse axis value horizontal distance to the pixel point from a first dimensional interval of an adjacent pixel point of each pixel point when the total data quantity falls between a one-time screen pixel quantity and two-time screen pixel quantity, and drawing a vertical line with a pixel width and perpendicular to the transverse axis by adopting longitudinal coordinate values of the two avionics data as terminal values, and obtaining a fitted curve formed by combining a plurality of vertical lines; selecting a maximal longitudinal coordinate value and a minimal longitudinal coordinate of the avionics data in the first dimensional interval corresponding to each pixel point when the total data quantity is greater than the two-time screen pixel quantity, drawing a vertical line with a pixel width and perpendicular to the transverse axis by adopting the two values as terminal values, and combining a plurality of vertical lines to form a fitted curve.

Description

technical field [0001] The present invention relates to the technical field of avionics data processing, and more specifically, to a method and system for playing back curves of avionics data. Background technique [0002] In the relevant tests of the avionics system, various avionics data transmitted by the avionics bus are generally stored in the data acquisition system. With the upgrading of the avionics bus, its bandwidth is getting wider and wider, and more and more avionics data are stored. The testers can analyze and judge the avionics data during the test by replaying the stored avionics data. . [0003] At present, the commonly used playback method is to read avionics data from the database according to the preset time (for example, read 100 pieces of avionics data from the database per second), and then fit the curve according to the timestamp and data value of each avionics data , to play back the avionics data. When the amount of stored avionics data is large,...

AI Technical Summary

Problems solved by technology

[0004] However, after splitting the avionics data into multiple data files, it is possible to break the key data change interval, so that it is impossible to directly view the overall data change trend, which affects the accuracy of the avionics data analysis

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