| 基于USB2.0的实时数据采集系统研究 |
| |
| 引用本文： | 覃章健,黄洪全,葛良全.基于USB2.0的实时数据采集系统研究[J].中国测试技术,2005,31(5):87-91. |
| |
| 作者姓名： | 覃章健 黄洪全 葛良全 |
| |
| 作者单位： | 成都理工大学,四川,成都,610059 |
| |
| 基金项目： | 国家自然科学基金项目（437451） |
| |
| 摘 要： | 本文详细地阐述了基于USB2．0的实时数据采集虚拟仪器系统的设计细节和研究成果。系统采用400MHz增益带宽积的运算放大器，运用DA高精度校准技术，并选用高采样率低噪声的12位AD转换芯片进行模拟电路和AD转换电路设计，保证了数据采集系统的信噪比，提高了系统测量精度。系统还采用预测编码和字典压缩等数据压缩技术，降低了系统数据传输量，并运用USB2．0高速数据串行传输接口技术，实现了数据串行高速传输，满足了高数据吞吐量要求。
|
| 关 键 词： | 数据采集 USB DSP 数据压缩 |
| 文章编号： | 1672-4984(2005)05-0087-05 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-05-28 |
Study of real-time data acquisition system based on USB2.0 |
| |
| QIN Zhang-jian,HUANG Hong-quan,GE Liang-quan.Study of real-time data acquisition system based on USB2.0[J].China Measurement Technology,2005,31(5):87-91. |
| |
| Authors: | QIN Zhang-jian HUANG Hong-quan GE Liang-quan |
| |
| Abstract: | The dissertation has given the designing details and the achivements in study, which includes general scheme, circuits, software and performance of real-time data acquisition system based USB2.0 technology. Firstly, the system has a good SNR and high accuracy, which is owed to wideband operational amplifier being used, accurate adjustment by DA, 12-bit high sampling AD converter being applied. Secondly, data transmission becomes less by using forecasting code technology and dictionary compress technology, which are run by DSP on board.Thirdly, the system can transfer data to PC at a high speed on the series interface based on USB2.0 technology, which is satisfied with the demand for a great many data transmission. |
| |
| Keywords: | Data acquisition USB DSP Data compress |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
