Precision-controllable synchronous error measurement system for multiple high-speed cameras

Abstract

The invention discloses a precision-controllable synchronous error measurement system for multi-high-speed-cameras, and the system comprises a pattern dynamic conversion device which triggers a pattern to be converted according to a preset time interval and a preset conversion sequence based on a pulse signal transmitted by an FPGA, wherein the preset time interval is determined according to the measurement error precision requirement; a plurality of high-speed cameras which are used for shooting the current pattern of the pattern dynamic conversion device based on the synchronous control signal; and a synchronization error calculation module which is used for obtaining synchronization signal time errors among the plurality of cameras according to the serial number difference values of thepatterns shot by the plurality of high-speed cameras. According to the invention, synchronization error calculation for different measurement error precision requirements is realized, the measurementerror precision control method is convenient to realize, and the synchronization error calculation method is simple.

Description

technical field [0001] The invention relates to the technical field of signal synchronization control, in particular to a synchronization error measurement system for multiple high-speed cameras with controllable precision. Background technique [0002] At present, the frame rate of high-speed cameras can reach up to 1 million frames, and they are widely used in the fields of gunpowder blasting analysis, ballistic analysis, high-resolution high-speed microscope imaging, automobile crash tests, fast fluid observation, etc. Sometimes it is necessary to use multiple high-speed cameras to monitor During the test, observe and observe the changes of the test in a short period of time. [0003] At present, when multiple high-speed cameras are used for synchronous shooting, it is necessary to measure the synchronization error for synchronization calibration. In the prior art, the synchronization error of multiple high-speed cameras is obtained by judging the time stamp and frame int...

AI Technical Summary

Problems solved by technology

[0003] At present, when multiple high-speed cameras are used for synchronous shooting, it is necessary to measure the synchronization error for synchronization calibration. In the prior art, the synchronization error of multiple high-speed cameras is obtained by judging the time stamp and frame interval of the image, but judging The synchronization error accuracy of high-speed cameras is fixed and can only reach the ms level, which cannot meet the various error accuracy requirements required by most customers to adapt to different usage scenarios

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