Test data synchronization method, device and system based on combined data acquisition instrument

Abstract

The invention discloses a test data synchronization method based on a combined data acquisition instrument. The method comprises the steps: S1, obtaining a data file collected by the data acquisitioninstrument, the data file having time information and comprising a data file containing a first parameter and a second parameter; S2, extracting and merging the data files containing the first parameters in the target time period according to the first parameters and the time information so as to generate to-be-processed data, and extracting and merging the data files containing the second parameters in the target time period according to the second parameters and the time information so as to generate reference data; S3, carrying out time synchronization processing on the to-be-processed dataand the reference data by taking the time of the reference data as a reference. The invention further discloses a time synchronization device and a test data synchronization system based on the combined data acquisition instrument. By adopting the method, the device and the system, the data files can be classified, merged and synchronized; the frequency and time of the data files can be rapidly synchronized, and the utilization rate of the data acquisition instrument is improved.

Description

technical field [0001] The invention relates to the technical field of time synchronization, in particular to a test data synchronization method based on a combined data acquisition instrument, a time synchronization device and a test data synchronization system based on a combined data acquisition instrument. Background technique [0002] During the whole vehicle test, a large number of signals may need to be collected for some special working conditions. Due to the different physical characteristics of different signals, it is impossible to collect all the signals with a single type of data acquisition instrument. It is often necessary to use multiple data acquisition instruments of different models and types for combined acquisition. In the process of manually operating the data acquisition instrument, often It is prone to the problem of data signal time out of synchronization. Under this premise, it is difficult to ensure the consistency of the data sampling frequency o...

AI Technical Summary

Problems solved by technology

However, this patent uses a communication method between instruments, and there is a risk of loss of synchronous signals between instruments. At the same time, this patent requires a specific instrument for program setting. Once a problem occurs in the field test, it will need to be adjusted immediately, which does not meet the overall requirements. The real-time requirements of vehicle testing, there is no convenient way to process data offline

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