Application of windriver on the development of data sampling card driver 总线的高速数据采集卡的驱动程序设计
2.
Usually , this is not easy and requires the trial and error method . this paper designs a cross - flow steam / water heat exchanger and the according system and the sampling card 本文设计了以蒸汽/水为介质的换热器，以及相对应的系统，并对用到的数据采集卡板作了介绍。
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The system resolutions of the two measurands - temperature and strain - have been obtained by using a 16 - byte sampling card . the distributed demodulation function is also testified 使用16位采样卡测试了系统对温度和应变这两个物理量测试的分辨率，并验证了系统的分布式解调功能。
4.
2 . based on the collection and analysis of the experimental results , the software system has been improved and an 8 - byte sampling card is applied to testify the feasibility of the designed system 在对实验数据的采集和分析的基础上改进系统软件的功能，使用8位采样卡验证了系统设计的可行性。
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It includes three parts , the first is the design of the upper computer communication with the lower computer , including the communication to the serial port and the pcl - 813 sampling card 开发内容包括： ( 1 )上位机和下位机通信程序设计，包括对计算机串口com1 、 com2口的通信及pcl ? 818采集卡系统的通信。
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Based on an analysis of uhf ( ultra - high - frequency ) characteristic of pd ( partial discharge ) in power transformer , using mixing technique , a signal disposal cell has been devised for the sake of facilitating common data sampling card 摘要在分析了电力变压器局部放电的超高频特性的基础上，利用混频技术，设计了局部放电超高频信号的信号调理单元，方便普通数字采集卡采集。
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Finally , approach to improve the performance of the system is put forwards based on the analysis of the experimental results . the following work has been done in this paper : l . have put forward an integrated distributed fbg sensoring demodulation system and have settled the whole set of equipments and experimental devices of the system . software corresponding to a 8 - byte and a 16 - byte sampling card have been developed respectively 在前人研究的基础上，设计了一整套分布式fbg传感解调系统，搭建了整个分布式fbg解调系统的实验装置系统，分别设计了使用8位和16位采样卡进行数据接受和处理的软件系统，并对采样得到的数据进行分析和处理。
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It designed signal amplifying circuit , frequency tricking circuit , data sampling and keeping circuit . the choice of 12 bits high accuracy a / d integrated data sampling card made program simply , high flexible and expandable . and to each error which is likely to occur in high voltage capacity type equipment during the monitoring , analysis and judgement are given 在硬件电路实现上，注意选择信号传感器；合理设计了信号放大电路和滤波电路；设计了频率跟踪电路，数据采样/保持电路；结合软件控制选用了12位高精度的a / d转换器，使软件编程简化且具有较高的灵和性和可扩展性。
9.
The system is composed of an medical microscopy , a video image sampling card , a computer system and software what we developed specially for this system . further more , it provides many powerful functions including pathologic image recording , image sampling , image processing , parameter measurement , result analysis , report creating , report printing and so on 该系统集医用显微镜、视频图像采集卡、计算机系统于一体，实现了从病理图像记录、采集、预处理到特征参数测量、结果分析、报告生成、打印等一系列功能。
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Digital image processing consume a large amount of memory and time commonly . basing on the advantage of fpga , the paper design harware module by hdl ( hardware language ) , i . e . , some function is achieved by les ( logic element ) of the fpga . the real - time of digital image processing is achieved by this . the sample and display of digital image is the important part . so , the paper mainly design the sample and desplay module . the sample card is designed and it ’ s word mode is configured according china ’ s cvbs ( composite video bar signal ) . for acquiring the image and storing it correctly to sram , the paper design the sample - control module . the sample module can work correctly using least time . the reliability and real - time achieve the reference . according the vga principle and scheduling of the ths8134 , the paper design a vga - control module by hdl . firstly , the control signal is synthesized secondly , the horirontal and vertical synchronization signals is synthesized according to the vga interface standard 图像处理的特点是处理的数据量大,处理非常耗时,为实现数字图像的实时处理,本文研究了在fpga上用硬件描述语言实现功能模块的方法,通过功能模块的硬件化,解决了视频图像处理的速度问题。图像数据的正确采集和显示输出是其中的两个重要的模块,因此,本文主要完成了图像数据的采集和显示输出的设计。本文设计了采集卡,并要对其工作模式进行了配置和编写了采集控制模块,在采集控制模块的控制下,将数字图像数据正确无误的存储到了sram中。
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