| 基于软件的拓宽数据采集仪动态范围的应用 |
| |
| 引用本文： | 何先龙,赵立珍,杨学山.基于软件的拓宽数据采集仪动态范围的应用[J].自动化仪表,2012,33(8):81-83. |
| |
| 作者姓名： | 何先龙 赵立珍 杨学山 |
| |
| 作者单位： | 1. 中国地震局工程力学研究所,黑龙江哈尔滨,150080
2. 防灾科技学院,河北三河,065201 |
| |
| 基金项目： | 中国地震局教师科研基金资助项目 |
| |
| 摘 要： | 高采样率和宽动态范围是提高数据采集仪性能的关键指标。对拓宽采集仪的动态范围的方法进行了研究,提出了基于虚拟多核数据采集技术来拓宽低位A/D芯片的动态范围的方法。此方法通过软件对A/D转换的数据进行多次重采样,间接提高了采集仪的动态范围。基于此方法和16位A/D芯片开发出了虚拟3核数据采集仪。测试结果表明此采集仪具有高采样率和宽动态范围的性能,可用于实际测试。
|
| 关 键 词： | 数据采集仪 动态范围 采样率 多重采样 虚拟多核 A/D芯片 |
Application of the Software Method to Broaden the Dynamic Range of Data Acquisition Instrument |
| |
| He Xianlong Zhao Lizhen Yang Xueshan.Application of the Software Method to Broaden the Dynamic Range of Data Acquisition Instrument[J].Process Automation Instrumentation,2012,33(8):81-83. |
| |
| Authors: | He Xianlong Zhao Lizhen Yang Xueshan |
| |
| Affiliation: | He Xianlong Zhao Lizhen Yang Xueshan |
| |
| Abstract: | High sampling rate and wide dynamic range are the key indexes in improving the performance of data acquisition instrument.The methods to broaden the dynamic range of data acquisition instrument are researched,and the method based on virtual multi-core data acquisition technology to broaden the dynamic range of low A/D chip is proposed.Software is used in this method to multisampling the data converted by A/D,and to indirectly increase the dynamic range of the instrument.Virtual 3-core data acquisition instrument is developed based on this method and 16 bit A/D chip.The test results show that the new instrument features high sampling rate and wide dynamic range,and is feasible in practical tests. |
| |
| Keywords: | Date acquisition instrument Dynamic range Sampling rate Multisampling Virtual multi-core A/D chip |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
