BE875235A - Geophone a champ magnetique mis en forme - Google Patents
Geophone a champ magnetique mis en formeInfo
- Publication number
- BE875235A BE875235A BE0/194337A BE194337A BE875235A BE 875235 A BE875235 A BE 875235A BE 0/194337 A BE0/194337 A BE 0/194337A BE 194337 A BE194337 A BE 194337A BE 875235 A BE875235 A BE 875235A
- Authority
- BE
- Belgium
- Prior art keywords
- geophone
- magnetic field
- field shaped
- shaped
- magnetic
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/181—Geophones
- G01V1/182—Geophones with moving coil
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US90051278A | 1978-04-27 | 1978-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE875235A true BE875235A (fr) | 1979-07-16 |
Family
ID=25412642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE0/194337A BE875235A (fr) | 1978-04-27 | 1979-03-30 | Geophone a champ magnetique mis en forme |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE875235A (fr) |
DE (1) | DE2852565A1 (fr) |
FR (1) | FR2424550A1 (fr) |
GB (1) | GB2022359A (fr) |
NL (1) | NL7901771A (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2214724A (en) * | 1988-01-28 | 1989-09-06 | Custom Dev Ltd | Permanent magnet electric motor |
JPH06323897A (ja) * | 1993-05-17 | 1994-11-25 | N D R:Kk | 振動・衝撃検知用センサ |
JPH11258353A (ja) * | 1998-03-10 | 1999-09-24 | Tomoo Matsuo | 地嵐表示装置とそれを用いた地球変動予知装置 |
US6922374B2 (en) | 2001-04-09 | 2005-07-26 | Input/Output, Inc. | Double-ended geophone |
DE102006016355A1 (de) * | 2006-04-05 | 2007-10-18 | Vega Grieshaber Kg | Vibrationssensor |
DE102009008789A1 (de) * | 2009-02-13 | 2010-09-02 | Geolab S.A.S. | Akustischer Sensor mit hoher Empfindlichkeit |
US8050144B2 (en) | 2009-07-08 | 2011-11-01 | Geospace Technologies Lp | Vertical geophone having improved distortion characteristics |
US8098546B2 (en) | 2009-07-08 | 2012-01-17 | Geospace Technologies, Lp | Geophone having improved sensitivity |
US8208347B2 (en) | 2009-07-08 | 2012-06-26 | Geospace Technologies, Lp | Geophone having improved damping control |
SE538479C2 (sv) * | 2013-06-20 | 2016-07-26 | Uhlin Per-Axel | Vibrationssensor för registrering av vibrationer i vibrationssensorns vertikala och horisontella led |
-
1978
- 1978-12-05 DE DE19782852565 patent/DE2852565A1/de not_active Withdrawn
-
1979
- 1979-01-12 GB GB7901222A patent/GB2022359A/en not_active Withdrawn
- 1979-03-06 NL NL7901771A patent/NL7901771A/xx not_active Application Discontinuation
- 1979-03-08 FR FR7905951A patent/FR2424550A1/fr not_active Withdrawn
- 1979-03-30 BE BE0/194337A patent/BE875235A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
GB2022359A (en) | 1979-12-12 |
FR2424550A1 (fr) | 1979-11-23 |
DE2852565A1 (de) | 1979-10-31 |
NL7901771A (nl) | 1979-10-30 |
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