A 3D Mapping Synchronization Method for Multi-FPGA Multi-channel Acquisition System

Abstract

The invention discloses a three-dimensional mapping synchronization method for a multi-FPGA multi-channel acquisition system, which realizes the synchronization of vector mapping between different channels in a single-chip mapping FPGA by simultaneously starting the vector mapping process of each column, and waits for all the mapping FPGAs to complete the three-dimensional mapping Afterwards, the main control FPGA sends the all_channel_dpx_over signal as a condition for the jump of each mapped FPGA state machine to realize the synchronization of the mapped FPGA state machine jump. At the same time, the asynchronous FIFO is used as the carrier to display the three-dimensional database received by the FPGA, which solves the problem of cross-clock domain data reception; at the same time, this method can well realize the mapping synchronization of the acquisition system under the multi-FPGA multi-channel architecture.

Description

technical field [0001] The invention belongs to the technical field of waveform three-dimensional mapping synchronization, and more particularly, relates to a three-dimensional mapping synchronization method of a multi-FPGA multi-channel acquisition system. Background technique [0002] Synchronization is a very important indicator in the multi-channel acquisition system. It reflects the degree of consistency between different channels, that is, whether the same signal is still consistent after the process of sampling, storage and display after the same signal is input to different channels. This kind of index is particularly important in the test system. While measuring the parameters of the signal itself in a single channel, it is necessary to measure the correlation parameters of the signals between different channels. [0003] Sampling rate and bandwidth, as traditional indicators of acquisition systems, have developed rapidly in the past few decades. The acquisition-st...

AI Technical Summary

Problems solved by technology

However, the use of FPGA to realize three-dimensional mapping of waveforms brings new problems to the acquisition synchronization between different channels

The essence of 3D mapping is to convert the collected waveform data into a gray-scale image form. In the process of converting the collected data to the image, once asynchronous phenomenon occurs, the relative position of the waveform between the channels will change, making the original The synchronized waveform acquisition data is converted into asynchronous grayscale images between channels, which introduces new errors and affects the observation of acquired waveforms

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