发明名称 |
MINIATURE PENDULUM TYPE ACCELEROMETER COMBINED WITH AC DRIVEN MAGNETOMETER |
摘要 |
<p>A magnetometer is integrated with a miniature vibrating beam accelerometer fabricated out of silicon on a common substrate. Dual pendulum-DETF force sensing accelerometers have integrated conductor coils on the pendulums that circulate alternating current to cause an additional pendulum motion also sensed by the DETF transducers for sensing local earth magnetic field. The integrated magnetic and acceleration sensing is used for each of three reference axes in a triaxial inclinometer magnetometer for borehole drill steering and surveying.</p> |
申请公布号 |
WO9747978(A1) |
申请公布日期 |
1997.12.18 |
申请号 |
WO1997US10325 |
申请日期 |
1997.06.13 |
申请人 |
ALLIEDSIGNAL INC. |
发明人 |
PETRI, FRED |
分类号 |
E21B47/02;E21B47/022;G01C17/30;G01P15/097;G01P15/10;G01R33/028;(IPC1-7):G01P15/10;E21B47/024 |
主分类号 |
E21B47/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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