JPH0221289A - 埋設管の検知方法 - Google Patents
埋設管の検知方法Info
- Publication number
- JPH0221289A JPH0221289A JP63171200A JP17120088A JPH0221289A JP H0221289 A JPH0221289 A JP H0221289A JP 63171200 A JP63171200 A JP 63171200A JP 17120088 A JP17120088 A JP 17120088A JP H0221289 A JPH0221289 A JP H0221289A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- distribution
- alternating current
- buried pipe
- field distribution
- 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
- 238000009826 distribution Methods 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 39
- 238000001514 detection method Methods 0.000 claims description 15
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000009933 burial Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63171200A JPH0221289A (ja) | 1988-07-09 | 1988-07-09 | 埋設管の検知方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63171200A JPH0221289A (ja) | 1988-07-09 | 1988-07-09 | 埋設管の検知方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0221289A true JPH0221289A (ja) | 1990-01-24 |
JPH0555833B2 JPH0555833B2 (en]) | 1993-08-18 |
Family
ID=15918875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63171200A Granted JPH0221289A (ja) | 1988-07-09 | 1988-07-09 | 埋設管の検知方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0221289A (en]) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05192314A (ja) * | 1991-09-03 | 1993-08-03 | General Electric Co <Ge> | 無線周波数電磁界で器具の位置および方向を追跡するための追跡システム |
JPH05245129A (ja) * | 1991-12-30 | 1993-09-24 | Hamamatsu Photonics Kk | 診断装置 |
JPH06214043A (ja) * | 1993-01-13 | 1994-08-05 | Kyushu Denki Kensetsu Koji Kk | 地下埋設回線位置検出方法 |
US8729901B2 (en) | 2009-07-06 | 2014-05-20 | Merlin Technology, Inc. | Measurement device and associated method for use in frequency selection for inground transmission |
JP2016191627A (ja) * | 2015-03-31 | 2016-11-10 | 大阪瓦斯株式会社 | 埋設金属の探知用の送信信号の設定方法及びこの設定方法を用いた探知装置 |
US9739140B2 (en) | 2014-09-05 | 2017-08-22 | Merlin Technology, Inc. | Communication protocol in directional drilling system, apparatus and method utilizing multi-bit data symbol transmission |
US10378338B2 (en) | 2017-06-28 | 2019-08-13 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS629286A (ja) * | 1985-07-05 | 1987-01-17 | Tokyo Gas Co Ltd | 地下埋設物の探知方法及びその装置 |
JPS62297776A (ja) * | 1986-06-17 | 1987-12-24 | Nec Corp | 埋設導体の位置検出方法 |
JPS6335978U (en]) * | 1986-08-26 | 1988-03-08 | ||
JPH01123185A (ja) * | 1987-11-06 | 1989-05-16 | Tokyo Gas Co Ltd | 地中埋設物の磁気的位置検知方法 |
-
1988
- 1988-07-09 JP JP63171200A patent/JPH0221289A/ja active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS629286A (ja) * | 1985-07-05 | 1987-01-17 | Tokyo Gas Co Ltd | 地下埋設物の探知方法及びその装置 |
JPS62297776A (ja) * | 1986-06-17 | 1987-12-24 | Nec Corp | 埋設導体の位置検出方法 |
JPS6335978U (en]) * | 1986-08-26 | 1988-03-08 | ||
JPH01123185A (ja) * | 1987-11-06 | 1989-05-16 | Tokyo Gas Co Ltd | 地中埋設物の磁気的位置検知方法 |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05192314A (ja) * | 1991-09-03 | 1993-08-03 | General Electric Co <Ge> | 無線周波数電磁界で器具の位置および方向を追跡するための追跡システム |
JPH05245129A (ja) * | 1991-12-30 | 1993-09-24 | Hamamatsu Photonics Kk | 診断装置 |
JPH06214043A (ja) * | 1993-01-13 | 1994-08-05 | Kyushu Denki Kensetsu Koji Kk | 地下埋設回線位置検出方法 |
US11047896B2 (en) | 2009-07-06 | 2021-06-29 | Merlin Technology Inc. | Portable device with electromagnetic noise measurement at multiple frequencies |
US10598712B2 (en) | 2009-07-06 | 2020-03-24 | Merlin Technology Inc. | Portable device with electromagnetic noise measurement for inground transmitter frequency selection |
US11802900B2 (en) | 2009-07-06 | 2023-10-31 | Merlin Technology Inc. | Portable device with removably attachable measuring leg |
US20170350930A1 (en) | 2009-07-06 | 2017-12-07 | Merlin Technology Inc. | Measurement device and associated method for use in frequency selection for inground transmission |
US11320474B2 (en) | 2009-07-06 | 2022-05-03 | Merlin Technology Inc. | Portable device for noise measurement at locations along a path to determine one or more indications |
US10520536B2 (en) | 2009-07-06 | 2019-12-31 | Merlin Technology Inc. | Apparatus for predicting a maximum operational depth for an underground drilling procedure and method |
US8729901B2 (en) | 2009-07-06 | 2014-05-20 | Merlin Technology, Inc. | Measurement device and associated method for use in frequency selection for inground transmission |
US11230921B2 (en) | 2014-09-05 | 2022-01-25 | Merlin Technology, Inc. | Communication protocol in directional drilling system, apparatus and method utilizing multi-bit data symbol transmission |
US9739140B2 (en) | 2014-09-05 | 2017-08-22 | Merlin Technology, Inc. | Communication protocol in directional drilling system, apparatus and method utilizing multi-bit data symbol transmission |
JP2016191627A (ja) * | 2015-03-31 | 2016-11-10 | 大阪瓦斯株式会社 | 埋設金属の探知用の送信信号の設定方法及びこの設定方法を用いた探知装置 |
US11008856B2 (en) | 2017-06-28 | 2021-05-18 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
US10598007B2 (en) | 2017-06-28 | 2020-03-24 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
US10378338B2 (en) | 2017-06-28 | 2019-08-13 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
US11352876B2 (en) | 2017-06-28 | 2022-06-07 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
US11613990B2 (en) | 2017-06-28 | 2023-03-28 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
US12228030B2 (en) | 2017-06-28 | 2025-02-18 | Merlin Technology, Inc. | Advanced passive interference management in directional drilling system, apparatus and methods |
Also Published As
Publication number | Publication date |
---|---|
JPH0555833B2 (en]) | 1993-08-18 |
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