发明名称 |
Borehole induction coil transmitter |
摘要 |
A borehole induction coil transmitter which is a part of a cross-borehole electromagnetic field system that is used for underground imaging applications. The transmitter consists of four major parts: 1) a wound ferrite or mu-metal core, 2) an array of tuning capacitors, 3) a current driver circuit board, and 4) a flux monitor. The core is wound with several hundred turns of wire and connected in series with the capacitor array, to produce a tuned coil. This tuned coil uses internal circuitry to generate sinusoidal signals that are transmitted through the earth to a receiver coil in another borehole. The transmitter can operate at frequencies from 1-200 kHz and supplies sufficient power to permit the field system to operate in boreholes separated by up to 400 meters.
|
申请公布号 |
US6489772(B1) |
申请公布日期 |
2002.12.03 |
申请号 |
US19950376725 |
申请日期 |
1995.01.23 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
HOLLADAY GALE;WILT MICHAEL J. |
分类号 |
G01V3/28;(IPC1-7):G01V3/18 |
主分类号 |
G01V3/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|