JPS57190284A - Detection of buried position of underground conductor - Google Patents
Detection of buried position of underground conductorInfo
- Publication number
- JPS57190284A JPS57190284A JP56076083A JP7608381A JPS57190284A JP S57190284 A JPS57190284 A JP S57190284A JP 56076083 A JP56076083 A JP 56076083A JP 7608381 A JP7608381 A JP 7608381A JP S57190284 A JPS57190284 A JP S57190284A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- line
- return current
- rising
- buried
- 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.)
- Granted
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
- G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
- G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using ac
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To enable accurate measurement of buried position of a conductor by determining changes in the direction of a synthetic magnetic field generated from the conductor and a return current line when the position of installing the return current line is changed, at two points on the surface of ground outside both sides of the conductor. CONSTITUTION:A return current line 14 is provided on the surface of ground where a conductor 11 is buried and one end thereof 14 is connected to one end of the conductor 11 through a rising line 16 while the other end of the line 14 is connected to the other end of the conductor 11 through a transmitting unit 17 and the rising line 18 to form a closed loop. The transmitting unit 17 amplifies signals from a transmitter 19 through a voltage amplifier 20 and fed to the conductor 11 through the line 14 and the rising line 16. At the same time, current values flowing through the line 14 are measured with a current measuring device 21 to adjust the amplification rate of the power amplifier 20 so as to exceed a fixed value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076083A JPS57190284A (en) | 1981-05-20 | 1981-05-20 | Detection of buried position of underground conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56076083A JPS57190284A (en) | 1981-05-20 | 1981-05-20 | Detection of buried position of underground conductor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57190284A true JPS57190284A (en) | 1982-11-22 |
JPS642226B2 JPS642226B2 (en) | 1989-01-17 |
Family
ID=13594927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56076083A Granted JPS57190284A (en) | 1981-05-20 | 1981-05-20 | Detection of buried position of underground conductor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57190284A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57200802A (en) * | 1981-06-05 | 1982-12-09 | Nippon Kokan Kk <Nkk> | Method for detecting buried position of underground buried conductor |
JP2010066113A (en) * | 2008-09-10 | 2010-03-25 | Iwate Univ | System and method for measuring metal embedding depth |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5416754A (en) * | 1977-06-13 | 1979-02-07 | Gen Electric | Control for air conditioner |
-
1981
- 1981-05-20 JP JP56076083A patent/JPS57190284A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5416754A (en) * | 1977-06-13 | 1979-02-07 | Gen Electric | Control for air conditioner |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57200802A (en) * | 1981-06-05 | 1982-12-09 | Nippon Kokan Kk <Nkk> | Method for detecting buried position of underground buried conductor |
JP2010066113A (en) * | 2008-09-10 | 2010-03-25 | Iwate Univ | System and method for measuring metal embedding depth |
Also Published As
Publication number | Publication date |
---|---|
JPS642226B2 (en) | 1989-01-17 |
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