FPGA (Field Programmable Gate Array) based multi-channel data transmission synchronization delay measurement method and system

Abstract

The invention discloses a FPGA (Field Programmable Gate Array) based multi-channel data transmission synchronization delay measurement method and system and relates to the electronic measurement technical field. The FPGA based multi-channel data transmission synchronization delay measurement method comprises step 1, providing a data transmission clock and a frame synchronization signal through a clock module; step 2, sending the every time of amount of phase shift of the clock to a phase shifting module, obtaining the maximum time of phase shift and setting the times of phase shift of the clock; step 3, sending delay data to a sampling conversion module through an IO (Input and Output) delay module; step 4, sending a sampling clock to the sampling conversion module through the phase shifting module; step 5, sending sampling data which are corresponding to link labels to a processing module through the sampling conversion module; step 6, determining whether the position of a sampling point is an unstable transmission position or not through the processing module; step 7, setting the delay order of the data to increase 1 through a control module; step 8, obtaining the unstable transmission position through the processing module; step 9, determining the synchronization delay of the sampling data which are corresponding to the link labels through the processing module. The FPGA based multi-channel data transmission synchronization delay measurement method and system is used for implementing the measurement on the data synchronization delay.

Description

technical field [0001] The invention relates to the technical field of electronic measurement, in particular to a measurement method and system for synchronous time delay of multi-channel data transmission based on FPGA. Background technique [0002] With the increasing maturity of information technology and electronic technology, the gradual improvement of information acquisition technology, the improvement of the performance of acquisition equipment, the gradual popularization of high-sampling rate and high-precision front-end applications, a large amount of high-speed data has emerged. Serial data transmission technology has the advantages of fast transmission speed and strong anti-interference ability, which satisfies the transmission requirements of high speed and high reliability, and is widely used in many fields such as modern science, industrial production and national defense construction. [0003] The serial transmission technology used in the prior art mainly has...

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Problems solved by technology

[0004] Aiming at the problem that the measurement of synchronous time delay cannot be realized in the prior art, the present invention provides a method for measuring the synchronous time delay of multi-channel data transmission based on FPGA, and the present invention realizes the movement of the sampling point position by shifting the serial data to the left , by moving the sampling clock to the right to expand the moving range of the sampling point position, it has the advantages of high resolution, wide range, multi-channel automatic measurement and strong anti-interference

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