公开(公告)号：US06720771B2

公开(公告)日：2004-04-13

申请号：US10105256

申请日：2002-03-26

申请人： Om Prakash Gupta ,  Sureneni Nageswara Rao ,  Madhu Sudan Joshi

发明人： Om Prakash Gupta ,  Sureneni Nageswara Rao ,  Madhu Sudan Joshi

IPC分类号： G01V318

CPC分类号： G01V3/10

摘要： The present invention relates to a moving dipole source electromagnetic induction device and method for carrying out geophysical surveys. The device is useful to locate deeper sub-surface bodies under poor electrical conducting surfaces and for mapping sub-surfacial conductivity changes due to salinity or pollution. The device includes a transmitter coil forming a series resonant circuit with tuning capacitor producing primary electromagnetic field and a receiver set. The receiver set up picks up resultant time varying feeble secondary electromagnetic field produced by transmitter components and a target. The secondary field amplitude is improved by increasing power of the transmitter coil. The transmitter and receiver set up produces an analog signal which is fed to A/D converter to obtain a digital signal to display the obtained data on an LCD display and storing the same data in a digital computer.

摘要翻译： 本发明涉及一种用于进行地球物理勘测的移动偶极源电磁感应装置和方法。 该装置可用于在较差的导电表面下定位更深的子表面体，并用于映射由于盐度或污染引起的亚表面电导率变化。 该装置包括一个发射器线圈，其形成具有产生初级电磁场的调谐电容器和一个接收器组的串联谐振电路。 接收机设置拾取由发射器部件和目标产生的合成时间变化的微弱次级电磁场。 通过增加发射器线圈的功率来改善次级场振幅。 发射机和接收机设置产生模拟信号，该模拟信号被馈送到A / D转换器以获得数字信号，以在LCD显示器上显示所获得的数据，并将数据存储在数字计算机中。