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

A multi-channel acquisition and multi-channel technology, which is applied in the directions of database distribution/replication, structured data retrieval, etc., can solve problems affecting acquisition waveform observation, achieve cross-clock domain data reception, good mapping synchronization, and reduce R&D difficulty Effect

Active Publication Date: 2021-03-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment

[0035] figure 1 It is a flow chart of a three-dimensional mapping synchronization method of a multi-FPGA multi-channel acquisition system of the present invention.

[0036] Three-dimensional mapping asynchrony mainly includes three types of asynchrony: 1. Asynchrony of mapping caused by mapping between channels. 2. The mapping caused by state machine transitions between FPGAs is not synchronized. 3. The mapping caused by the data transfer of the 3D database is out of sync.

[0037] Below we describe in detail these three types of asynchrony. Specifically:

[0038] S1. The mapping caused by the mapping between the channels is out of synchronization

[0039] There are two types of 3D mapping, one is point mapping and the other is vector mapping.

[0040] For point mapping, such as figure 2 As shown, the adjacent N sampling points in the acquisition buffer are a set of data (L1, L2, L3), the maximum and minimum values ​​are filtered out from a set of data, and the amplitud...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/27
Inventor 赵禹杨扩军叶芃曾浩蒋俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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