全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

下水探测全波收录系统

, PP. 1024-1030

Keywords: 仪器仪表技术,地面磁共振技术,全波探测,双向二极管,地下水,信噪比

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用分离线圈技术和双向二极管技术,使核磁共振地下水探测系统死区时间由38ms缩短至18ms,并提高了采集到的信号的幅度。通过结合全波收录系统所需高精度同步、大数据量采集、快速数据回传的特点,以状态机和多线程操作为基础,开发了基于CompactRIO平台的全波收录系统,为地面磁共振参考消噪等多种数据预处理方法的研究提供了强大的实践平台。实验结果表明,该系统工作稳定可靠,可以为核磁共振含水层精确解释提供有效的全波数据。

References

[1]  王中兴, 荣亮亮, 林君.地面核磁共振找水信号中的奇异干扰抑制[J].吉林大学学报:工学版, 2009, 39(5):1282-1287. Wang Zhong-xing, Rong Liang-liang, Lin Jun. Spike-noise elimination from surface unclear magnetic reso-nance signal for underground signal for underground water[J]. Journal of Jilin University (Engineering and Technology Edition), 2009, 39(5): 1282-1287.
[2]  Lubczynski M, Roy J. Hydrogeological interpretation and potential of the new magnetic resonance sounding (MRS) method[J]. Journal of Hydrology, 2003, 283(1-4): 19-40.
[3]  Roy J, Lubczynski M. The magnetic resonance sounding technique and its use for groundwater investigations[J]. Hydrogeology Journal, 2003, 11(4): 455-465.
[4]  Schirov M, Legchenko A, Creer G. New direct non-invasive ground water detection technology for Australia[J]. Exploration Geophysics, 1991, 22(2): 333-338.
[5]  林君, 段清明, 王应吉, 等. 核磁共振找水仪原理与应用[M]. 北京:科学出版社, 2011:2-3.
[6]  王中兴, 荣亮亮, 林君, 等. 基于4倍频采样的数字正交FID 信号检测技术[J]. 数据采集与处理, 2010, 25(5):626-630. Wang Zhong-xing, Rong Liang-liang, Lin Jun, et al. FID signal detection based on DLIA sampled by quadruple lamor frequency[J]. Journal of Data Acquisition & Processing, 2010, 25(5):626-630.
[7]  田宝凤, 林君, 段清明, 等. 基于参考线圈和变步长自适应的核磁共振信号噪声压制方法[J]. 地球物理学报, 2012, 55(7):2462-2472. Tian Bao-feng, Lin Jun, Duan Qing-ming, et al. Variable step adaptive noise cancellation algorithm for magnetic resonance sounding signal with a reference coil[J]. Chinese Journal of Geophysics, 2012, 55(7): 2462-2472.
[8]  田宝凤, 段清明. 核磁共振信号工频谐波的自适应滤除方法[J]. 吉林大学学报:信息科学版, 2009, 27(3):223-228. Tian Bao-Feng, Duan Qing-Ming. Removal method of industrial frequency harmonics in nuclear magnetic resonance signal based on adaptive filter[J]. Journal of Jilin University (Information Science Edition), 2009, 27(3):223-228.
[9]  Walsh David O. Multi-channel surface NMR instrumentation and software for 1D/2D groundwater investigations[J]. Journal of Applied Geophysics, 2008, 66: 140-150.
[10]  尚新磊, 林君, 田瑜娟, 等. 继电器平滑切换技术及其在核磁共振感应系统中的应用[J]. 吉林大学学报:工学版, 2011, 41(2):398-402. Shang Xin-lei, Lin Jun, Tian Yu-juan, et al. Relay smooth switching technique and application in magnetic resonance sounding system[J]. Journal of Jilin University (Engineering and Technology Edition), 2011, 41(2): 398-402.
[11]  荣亮亮.核磁共振多匝线圈找水技术研究[D]. 长春:吉林大学, 2009 Rong Liang-liang. Study on multi-turn loop magnetic resonance sounding (MRS) technique for underground water[D].Changchun: Jilin University, 2009.
[12]  王应吉, 林君.地面核磁共振找水仪放大器设计[J]. 仪器仪表学报, 2008, 29 (8): 1627-1632. Wang Ying-ji, Lin Jun. Amplifier design of surface nuclear magnetic resonance instrument for underground water invest[J].Chinese Journal of Scientific Instrument, 2008, 29 ( 8) : 1627-1632.
[13]  郭连平, 田书林, 蒋俊, 等.高速数据采集系统中触发点同步技术研究[J]. 电子测量与仪器学报, 2010, 24(3): 224-229. Guo Lian-ping, Tian Shu-lin, Jiang Jun, et al. Research on the trigger point synchronizing technology of ultra-high-speed data acquisition system[J]. Journal of Electronic Measurement and Instrument, 2010, 24 (3) : 224-229.
[14]  林君, 张哲, 王应吉, 等. 数字式平均法提高MRS探测信噪比应用研究[J]. 仪器仪表学报, 2012, 33(3):508-513. Lin Jun, Zhang Zhe, Wang Ying-ji, et al. Research on improving SNR of MRS detection with digital average method[J]. Chinese Journal of Scientific Instrument, 2012, 33(3): 508-513.
[15]  Jiang C D, Lin J, Duan Q M, et al. Statistical stacking and adaptive notch filter to remove high-level electromagnetic noise from MRS measurements[J]. Near Surface Geophysics, 2011, 9(5): 459-468.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133