JPS5527989A - Measuring method for depth of underground metallic route - Google Patents

Measuring method for depth of underground metallic route

Info

Publication number
JPS5527989A
JPS5527989A JP10221178A JP10221178A JPS5527989A JP S5527989 A JPS5527989 A JP S5527989A JP 10221178 A JP10221178 A JP 10221178A JP 10221178 A JP10221178 A JP 10221178A JP S5527989 A JPS5527989 A JP S5527989A
Authority
JP
Japan
Prior art keywords
route
underground metallic
coil
receiving
metallic route
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
Application number
JP10221178A
Other languages
Japanese (ja)
Other versions
JPS586912B2 (en
Inventor
Kazutoshi Nakao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP53102211A priority Critical patent/JPS586912B2/en
Publication of JPS5527989A publication Critical patent/JPS5527989A/en
Publication of JPS586912B2 publication Critical patent/JPS586912B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: Searching the position just above underground metallic route and detecting outputs from two receiving coils are used in minimum method to facilitate measurement.
CONSTITUTION: Transmission coil TC is used to provide high frequency current to underground metallic route 1 such as pipe route, in the indirect method. Receiving coil C0 is used in the minimum method to search the position vertically above the underground metallic route 1. The receiving coil C0 is located in the position at right angle to the axis of the transmission coil TC and free from magnetic force generated from the transmission coil TC. Minimum-method-use receiving coils C1, C2 are located on a straight line at right angle to the transmission and receiving coils TC-C0 connecting line, and spaced from the receiving coil C0 by distances d1 and d2. The transmission coil TC, given by high frequency output from oscillator 3, outputs to cause the underground metallic route 1 to generate magnetic field, which is received by the receiving coil C0 to generate output e0. If e0 becomes zero, it indicates the receiving coil C0 is just above the underground metallic route 1. Outputs e1, e2 from the receiving coils C1 and C2 are inputted in devider 11, the output of which provides the depth of the underground metallic route 1.
COPYRIGHT: (C)1980,JPO&Japio
JP53102211A 1978-08-21 1978-08-21 Depth measurement method for underground metal tracks Expired JPS586912B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53102211A JPS586912B2 (en) 1978-08-21 1978-08-21 Depth measurement method for underground metal tracks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53102211A JPS586912B2 (en) 1978-08-21 1978-08-21 Depth measurement method for underground metal tracks

Publications (2)

Publication Number Publication Date
JPS5527989A true JPS5527989A (en) 1980-02-28
JPS586912B2 JPS586912B2 (en) 1983-02-07

Family

ID=14321317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53102211A Expired JPS586912B2 (en) 1978-08-21 1978-08-21 Depth measurement method for underground metal tracks

Country Status (1)

Country Link
JP (1) JPS586912B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858166U (en) * 1981-08-10 1983-04-20 株式会社ナブコ valve drive device
US4806869A (en) * 1986-05-22 1989-02-21 Flow Industries, Inc. An above-ground arrangement for and method of locating a discrete in ground boring device
JPH0415501A (en) * 1990-05-09 1992-01-20 Fujikura Ltd Method and device for measuring embedded position of metallic long-size object
JP2010066113A (en) * 2008-09-10 2010-03-25 Iwate Univ System and method for measuring metal embedding depth
JP2012519287A (en) * 2009-03-02 2012-08-23 マイクロ−エプシロン・メステヒニク・ゲーエムベーハー・ウント・コンパニー・カー・ゲー Position sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858166U (en) * 1981-08-10 1983-04-20 株式会社ナブコ valve drive device
US4806869A (en) * 1986-05-22 1989-02-21 Flow Industries, Inc. An above-ground arrangement for and method of locating a discrete in ground boring device
JPH0415501A (en) * 1990-05-09 1992-01-20 Fujikura Ltd Method and device for measuring embedded position of metallic long-size object
JP2010066113A (en) * 2008-09-10 2010-03-25 Iwate Univ System and method for measuring metal embedding depth
JP2012519287A (en) * 2009-03-02 2012-08-23 マイクロ−エプシロン・メステヒニク・ゲーエムベーハー・ウント・コンパニー・カー・ゲー Position sensor

Also Published As

Publication number Publication date
JPS586912B2 (en) 1983-02-07

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