JPS57113385A - Apparatus for searching magnetic material - Google Patents
Apparatus for searching magnetic materialInfo
- Publication number
- JPS57113385A JPS57113385A JP55188666A JP18866680A JPS57113385A JP S57113385 A JPS57113385 A JP S57113385A JP 55188666 A JP55188666 A JP 55188666A JP 18866680 A JP18866680 A JP 18866680A JP S57113385 A JPS57113385 A JP S57113385A
- Authority
- JP
- Japan
- Prior art keywords
- core
- magnetic flux
- magnetic
- magnetic material
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To improve searching sensitivity to a greater extent by a method wherein a magnet is provided in the neighborhood of both sides of a yoke core of a differential compound transformer in such a way that magnetic flux passes through the magnetic path of the core. CONSTITUTION:An Ac excitation coil 8 is wound on a central foot 7a of an E type iron core 7 and output coils 9a, 9c are wound on both feet 7b, 7c of opposite polarity, and then an I type yoke core 10 is connected to the open side of the core 7 to form a differential compound transformer 6. Magnets 11, 12 are arranged near the ends of the iron core 10 in such a way that the magnetic flux moving from one magnet 11 toward the other magnet 12 is allowed to pass through the magnetic path of the iron core 10. For this reason, when a magnetic material 4 covered with a non-magnetic material 5 approaches, part phia of the magnetic flux phiD is separated for the magnetic material 4, so that the magnetic flux flowing into the iron core 10 changes by phia. Consequently, the magnetic flux interlinking with the output coils 9a, 9b decreases by phia causing an indication of a Dc ammeter 14 to change. Thus the magnetic material 4 is certainly searched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55188666A JPS57113385A (en) | 1980-12-29 | 1980-12-29 | Apparatus for searching magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55188666A JPS57113385A (en) | 1980-12-29 | 1980-12-29 | Apparatus for searching magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57113385A true JPS57113385A (en) | 1982-07-14 |
Family
ID=16227720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55188666A Pending JPS57113385A (en) | 1980-12-29 | 1980-12-29 | Apparatus for searching magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57113385A (en) |
-
1980
- 1980-12-29 JP JP55188666A patent/JPS57113385A/en active Pending
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