数字采集

基于CPLD和DSP的雷达信号数字采集接口模块设计

Design of Digital Acquisition Interface Module for Radar Signals Based on CPLD and DSP

系统射频前端采用自差拍混频的方式，混频后得到的回波差拍信号经预处理和PGA放大后，由数字采集模块对该信号进行同步采集，并将数据存储到计算机。

RF-front of this system uses a way of self-beat mixing , the echo signals received from the mixer will be gathered synchronously and saved to the computer by a digital acquisition module after the pretreatment and PGA amplification .

计算机数字采集回写CT、MRI图像网络化管理应用研究

The Study of the Net Management of the Computer Digital Collecting and Back-writing CT or MRI Image in the Clinic Application

将PC主板与光学台融合为一体，可对图像进行实时数字采集与处理。

The image can be gathered and processed in real time . The composites can be processed by melting injection molding .

图像采集及处理程序：NAS-PACS2.0预处理子系统，CT、MRI数字采集，超声视频采集。

Photo collection and handling program : NAS - PACS 2.0 pretreatment system , CT and MRI data collection , ultrasound AV collection .

讨论了雷达触发信号、船首信号的电平变换电路及视频信号的A/D变换电路，并重点讨论了实现雷达信号数字采集接口设计中CPLD逻辑设计和DSP软件设计。

The level convert circuit of triggering pulse signal and ship heading signal , and radar video signal A / D convert circuit are also discussed . The CPLD logical design and DSP software design is presented .

同时采用通用大规模集成器件（CPLD），设计实现了32路数字采集通道，提高了数据传送速率，节约了CPU资源和PCI总线资源。

The use of CPLD makes the stucture of the system more integrated . The 32-bit data acquisition system , the speed of data transmission is faster , the CPU resource and PCI bus resource are spared .

数据采集装置主要由CCD和数字采集卡组成，CCD拍摄散斑图像，并将其传输给数字采集卡，经采集卡转换成数字图像，以矩阵形式输入到数据处理装置。

Data-acquisition device is composed of CCD and digital image card , CCD gets the speckle image and transmits it to image card . Speckle image is changed into digital image and transmitted to data processing device in the form of matrix .

本文主要介绍模拟碰带记录地震仪MCD3及其解调器CBY2系列的一种行之有效的改进法。该方案配以IBMPC/XT计算机硬软件，能实现宽频多道数字采集与处理。

This Paper introduces a effective method of improving the analogue magnetic tape recorder MCD-3 and the demodulator CBY-2 . As this instrument includes a hardware and software of IBM-PC / XT computer , so it can carry out full-frequency range and multi-channel digital and data processing .

本论文的内容就是研制出高速的大容量的数字采集存储系统。

It develops high speed magnanimity digital collection memory system .

数字采集系统几种常用的自检测方法

Ways of Self Test Commonly Found in Digital Sampled System

基于单片机的简单数字采集系统的设计

Simple Digital Data Acquisition System Design Based on Single-chip Computer

基于数字采集卡的虚拟测温系统

Virtual Temperature Measuring System Based on the Data Acquisition Card

高速数字采集系统的分析和研究

Analysis and the Research of System are Gathered to the High Speed Figure

数字采集虚拟频率测试系统的设计与实现

Designing and Realization of Digital Virtual Frequency Controlling System

视频采集设备有两种，模拟采集设备和数字采集设备。

There are two kinds of video capture devices , analog and digital wares .

云纹干涉图像的数字采集及处理方法的研究

A Study on the Method of Digital Collecting and Processing of Moire Interferometry Image

无线电遥测地震数字采集系统

Radio telemetry seismic data acquisition system

高效的数字采集技术是提高雷达信号处理能力的关键。

The high-performance data acquisition technique is the key to enhance the radar signal processing ability .

多功用数字采集系统

A Multi-purpose Data-acquisition System

通过AVL657数字采集分析系统的测量，分析了改进后的燃烧系统。

The preliminary analysis for improved combustion system have been made on the basis of the measurement of its parameters .

随着数字采集技术和信号处理理论的普及，越来越多的图像以数字形式存储。

With popularization of digital acquisition technology and signal processing theory , more and more images stored in digital form .

在发送端对输入的视频信号进行数字采集、压缩，压缩后的数据流经信道传输至接收端解压缩，输出显示。

The input video is sampled at the transmitter of the sub-system , and code stream is sent to channel after compression .

目的研究一种用于电阻抗多频及参数成像数字采集系统的具有高抗噪性能和快速的解调方法。

AIM To develop demodulation methods with high anti-noise ability and high speed for data acquisition system inelectrical impedance multi-frequency and parameter tomography .

数据库管理系统包括录入、管理、调用和组装系统等，形成完整的数字采集及分析系统。三是数据库管理系统的应用。

The system includes login , administration , call and assembly systems , forming a complete digital acquisition and analysis system . 3 .

舌诊医疗中，病人的舌图象可以通过数字采集仪器（如数码相机等）获得。

In the tongue diagnosis , the tongue image of patient can be obtained by using digital instrument , for example , digital camera .

研究了云纹干涉图像的数字采集及处理方法，建立了图像实时采集及处理系统，编制了相关的程序。

This paper studies the method of the digital collecting and processing of Moire interferometry images , and establishes the real-time collecting and processing image system , and writes the correlative program .

论文主要讨论了机器视觉技术在嵌入式系统中的应用技术，提出并实现了一种基于机器视觉技术的手持式智能印刷体数字采集系统。

This dissertation mainly discusses the application of machine visual technology in embedded system . We propose and realize a new device called portable intelligent data-collecting device based on machine visual technology .

随着高速数字采集、大容量磁盘阵列记录和软件无线电技术的迅速发展，利用大容量磁盘阵列实现遥测数据实时记录已成为卫星地面接收设备的发展趋势。

With the rapid development of the technologies of high-speed sampling , large capacity disk array recording and software radio , recording the telemetry signal by large capacity disk array has been a trend .

随着数字采集和存储技术的快速发展，视频监控系统得到迅速普及，目前已成为社会公共安全监控系统的核心组成。

With the rapid development of digital cameras and storage technologies , the video surveillance systems spread rapidly and have become the major and core component of the monitoring system for social and public security .