Research on High-Speed Data Acquisition and Processing Technique

Abstract

This paper discusses the chief techniques and design principles of an ultra high speed data acquisition and processing module, which aims to solve dynamic, transitional and transient signal measurement. The module consists of A/D converter, on-board memories ,DSP processor and control circuit integrated in FPGA. It can achieve 8-bit resolution allowing up to 1 GHz sampling rate with 512 Mbyte on-board real-time memory. The DSP processor is the module controller, also can be controlled by host PC through PCI bus interface. Voluminous data transfer is very easy to complete. DSP has the advantage of data real-time processing and data preprocessing such as FFT, FIR etc. It greatly improved the performance of the data acquisition module. The module can carry out two record mode: continuous record and pre/post record, two trigger mode: internal trigger and external trigger, two storage mode: on-board real-time 512 Mbyte memory storage and hard disk storage. This can basically meet all kinds of application.