JPS6266184A - Depth measuring instrument for buried iron pipe or the like - Google Patents
Depth measuring instrument for buried iron pipe or the likeInfo
- Publication number
- JPS6266184A JPS6266184A JP60206036A JP20603685A JPS6266184A JP S6266184 A JPS6266184 A JP S6266184A JP 60206036 A JP60206036 A JP 60206036A JP 20603685 A JP20603685 A JP 20603685A JP S6266184 A JPS6266184 A JP S6266184A
- Authority
- JP
- Japan
- Prior art keywords
- receiving coil
- horizontal receiving
- depth
- coil
- antenna
- 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
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は地中に埋設された鉄管、ケーブル等の埋設深さ
を測定する埋設鉄管等の深度測定装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a depth measuring device for underground iron pipes, etc., which measures the depth of underground iron pipes, cables, etc.
（従来の技術）
埋設された鉄管、ケーブル等の埋設深さを測定する手段
として、二つの受信コイルを逆極性に結線したフェライ
トバー差動アンテナ装置を用い、電流を加えられた埋設
鉄管から発生する上方の磁界において、上下方向に前記
装置を動かし下位置にＪ３ける出力電圧および上位置に
おける出力電圧をそれぞれ測定し、これら測定値の比か
ら深度を導く方法がある。(Prior technology) As a means of measuring the depth of buried iron pipes, cables, etc., a ferrite bar differential antenna device in which two receiving coils are connected with opposite polarities is used to measure the depth of buried iron pipes, cables, etc. There is a method of moving the device vertically in an upper magnetic field, measuring the output voltage at the lower position and the output voltage at the upper position, and deriving the depth from the ratio of these measured values.
このような手段においては、フェライトバー°差動アン
テナ装置は下位置で測定したのち、引上げて上位置にお
いて測定するために所定距離間を上下可動とするような
摺ａ機構を採用した。In such a means, a sliding mechanism is adopted in which the ferrite bar differential antenna device is movable up and down within a predetermined distance in order to measure at the lower position and then pull it up and measure at the upper position.
このため上下摺動機構を要するばかりでなく、人力等外
力により上位置に引上げるので操作が面倒であり、かつ
自動測定には不都合であった。This not only requires a vertical sliding mechanism, but also requires external force such as human power to pull it up to the upper position, making the operation cumbersome and inconvenient for automatic measurement.
（発明が解決しようとする問題点）
フェライトバー差動アンテナ装置を下位置において出力
電圧を測定したのち、引上げて上位置における出力電圧
を測定することにより深度を求める手段は作業能率に劣
り、機構を？！雑にした。(Problems to be Solved by the Invention) The method of determining the depth by measuring the output voltage with the ferrite bar differential antenna device in the lower position and then pulling it up and measuring the output voltage in the upper position is poor in work efficiency and requires a mechanical of? ! I made it rough.
また、フェライトバーアンテナによって、下フェライト
バー差動アンテナと上フェライトバー着初アンテナをそ
れぞれ形成し、上下位置固定として深度を測定した場合
には、引上げ摺動機構付きフェライトバー差動アンテナ
装置の場合に比して、下フェライトバー差動アンテナ、
上フェライトバー差動アンテナにおけるそれぞれの出力
電圧のバラツキが大であり、フェライトバーアンテナ間
の誘磁率、温度特性のバラツキがあって正確な深度測定
ができない等の問題点があった。In addition, when the ferrite bar antenna is used to form a lower ferrite bar differential antenna and an upper ferrite bar first arrival antenna, and the depth is measured with the vertical position fixed, in the case of a ferrite bar differential antenna device with a lifting and sliding mechanism. Compared to the lower ferrite bar differential antenna,
There were problems such as large variations in the output voltages of the upper ferrite bar differential antennas, and variations in magnetic permittivity and temperature characteristics between the ferrite bar antennas, making it impossible to accurately measure depth.
く問題点を解決するための手段）
本発明は空心アンテナを採用し、切換操作により下空心
差動アンテナにおける出力電圧と上空心差初アンテナに
おける出力電圧とを測定し、これら出力電圧と下水平受
信コイルの設定地上高さとにより針棒機構を介し、直ち
に深度を読み取ることができるようにしたものであって
、上下方向において、それぞれ等間隔配置とした下水平
受信コイルと中水下受信コイルと上水平受信コイルを設
けるとともに前記下水平受信コイルを所定地上高さとし
、前記中水下受信コイルを前記下水平受信コイルと逆極
性に結線して下空心差動アンテナを形成自在とし、また
は前記中水下受信コイルを前記上水平受信コイルと逆極
性に結線して上空心差動アンテナを形成自在とするよう
切換自在とし、下空心差動アンテナの出力電圧と上空心
差動アンテナの出力電圧と、下水平受信コイルの所定地
上高さとにより深度を測定するようにしたことを特徴と
する埋設鉄管等の深度測定装置を提供するものである。The present invention employs an air-core antenna, and measures the output voltage of the lower air-core differential antenna and the output voltage of the upper air-core differential antenna by a switching operation. The depth can be read immediately through the needle bar mechanism depending on the set height of the receiving coil above the ground.The lower horizontal receiving coil and the midwater lower receiving coil are arranged at equal intervals in the vertical direction. An upper horizontal receiving coil is provided, the lower horizontal receiving coil is set at a predetermined height above the ground, and the middle water lower receiving coil is connected in opposite polarity to the lower horizontal receiving coil to form a lower air-centered differential antenna; The lower receiving coil is connected in opposite polarity to the upper horizontal receiving coil to form an upper air-core differential antenna, and the output voltage of the lower air-core differential antenna and the output voltage of the upper air-core differential antenna are The present invention provides a depth measuring device for buried iron pipes, etc., characterized in that the depth is measured based on a predetermined height above the ground of a lower horizontal receiving coil.
（作用）
下空心差動アンテナを形成して出力電圧を測定し、切換
えて上空心差動アンテナを形成して出力電圧を測定し、
これら出力電圧と下水平受信コイルの地上高さとによっ
て埋設鉄管等の深度を測定することができる。(Function) Form a lower air-core differential antenna to measure the output voltage, switch to form an upper air-core differential antenna to measure the output voltage,
The depth of buried iron pipes, etc. can be measured based on these output voltages and the height above ground of the lower horizontal receiving coil.
（実施例）
本発明を適用した装置の実施例を図面について説明する
。(Example) An example of an apparatus to which the present invention is applied will be described with reference to the drawings.
第１図、第２図および第３図に示すように、Ｌ端に握持
部１を固定した棒状ケース２に上下方向等間隔配置とし
た下水平受信コイル３と、中水下受信コイル４と上水平
受信コイル５を設けである。As shown in FIGS. 1, 2, and 3, a lower horizontal receiving coil 3 and a gray water lower receiving coil 4 are arranged at equal intervals in the vertical direction on a rod-shaped case 2 with a grip part 1 fixed to the L end. and an upper horizontal receiving coil 5.
前記中水下受信コイル４の両端はスイッチ６゜６の切換
えによって、下水平受信コイル３と逆極性に結線自在し
、または上水平受信コイル５と逆極性に結線自在として
あり、下水平受信コイル３と中水下受信コイル４とによ
って下空心差動アンテナ７を形成し、中水下受信コイル
４と上水平受信コイル５とによって上空心差動アンテナ
８を形成し得るようスイッチ６．６により切換自在とし
である。Both ends of the middle water lower receiving coil 4 can be freely connected to the opposite polarity to the lower horizontal receiving coil 3 or to the upper horizontal receiving coil 5 by switching the switches 6°6. 3 and the mid-water lower receiving coil 4 form a lower air-core differential antenna 7, and the mid-water lower receiving coil 4 and the upper horizontal receiving coil 5 form an upper air-core differential antenna 8. It is switchable.
また、下水平受信コイル３は棒状ケース２の下端に嵌着
したゴム製の当て具９の下面９ａより距離（又）位置に
設定してあり、下面９ａは地表面＜１）に当てるよう形
成しである。Further, the lower horizontal receiving coil 3 is set at a distance (also) from the lower surface 9a of the rubber stopper 9 fitted to the lower end of the rod-shaped case 2, and the lower surface 9a is formed so as to contact the ground surface <1). It is.
この場合、棒状ケース２の当て具９の下面９ａを地表面
（Ｌ）に当てたとき、第１図に示すように、地表面（Ｌ
）と下水平受信コイル３の距離（又）、下水平受信コイ
ル３と中水下受信コイル４との間隔を（２Ｊ２）、中水
下受信コイル４と上水平受信コイル５との間隔を（２又
）とし、導ＷＡ１０を介して下空心差動アンテナ７を形
成したときの出力電圧＜Ｅｚ＞、上空心差肋アンデナ８
を形成したときの出力電圧（Ｅｚ）を、それぞれ測定す
る電圧測定機構１１と、出力電圧（Ｅｒ）、（Ｅｚ）と
下水平受信コイル５の地上高さく又）により深度を計算
する針環機構１２を、それぞれ内蔵するとともに深度を
表示する液晶デジタル表示器１３を備えた深度計１４を
設番ノである。In this case, when the lower surface 9a of the contact tool 9 of the rod-shaped case 2 is applied to the ground surface (L),
) and the distance between the lower horizontal receiving coil 3 (also), the distance between the lower horizontal receiving coil 3 and the middle water lower receiving coil 4 (2J2), and the distance between the middle water lower receiving coil 4 and the upper horizontal receiving coil 5 ( output voltage <Ez> when the lower air-centered differential antenna 7 is formed via the conductor WA 10, and the upper air-centered differential antenna 8
a voltage measuring mechanism 11 that measures the output voltage (Ez) when the oscilloscope is formed, and a needle ring mechanism that calculates the depth based on the output voltage (Er), (Ez) and the ground height of the lower horizontal receiving coil 5. 12 and a depth meter 14 equipped with a liquid crystal digital display 13 for displaying depth.
前記下水平受信コイル３、中水下受信コイル４、上水平
受信コイル５のそれぞれ巻線数、インダクタンスを同一
とし、電気的性能の等しいものとし、第１図に示すよう
に、地表面（Ｌ）に棒状ケース２の当て具９の下面９ａ
を当て、発信器（図示しない）により地中に埋設した鉄
管（イ）に電流を通じて鉄管（イ）の上方に磁界を形成
したときの下水平受信コイル３の地表面（Ｌ）からの距
離〈又）、出力電圧（Ｅ＋）（Ｅ２）により、次式に示
すようにして計算機構１２により自動的に計算され、深
度計１４の液晶デジタル表示器１３に数値表示されるよ
う形成しである。The lower horizontal receiving coil 3, the middle water lower receiving coil 4, and the upper horizontal receiving coil 5 have the same number of windings and the same inductance, and have the same electrical performance.As shown in FIG. ) on the lower surface 9a of the abutting tool 9 of the rod-shaped case 2.
Distance from the ground surface (L) of the lower horizontal receiving coil 3 when a transmitter (not shown) passes current through the iron pipe (A) buried underground to form a magnetic field above the iron pipe (A). Furthermore, the output voltage (E+) (E2) is automatically calculated by the calculating mechanism 12 as shown in the following equation, and the value is displayed on the liquid crystal digital display 13 of the depth gauge 14.
が導かれる。is guided.
図中、１５は切換えスイッチ押し釦である。In the figure, 15 is a changeover switch push button.
本発明は前記のように構成したから、地中に埋設した鉄
管（イ）の上方に形成される磁界によって下空心差動ア
ンテナ７を形成し、切換えて次に上空心差動アンテナ８
を形成すれば、直ちに深度計１４の液晶デジタル表示器
１３に深度が数値表示され、鉄管（イ）の地表面（Ｌ）
よりの深さを検出することができる。Since the present invention is configured as described above, the lower air-core differential antenna 7 is formed by the magnetic field formed above the iron pipe (a) buried underground, and then the upper air-core differential antenna 8 is switched.
, the depth is immediately displayed numerically on the liquid crystal digital display 13 of the depth gauge 14, and the surface (L) of the iron pipe (A) is immediately displayed.
It is possible to detect deeper depths.
（発明の効果）
本発明は下水平受信コイルの地上高さを選定しておき、
下空心差初アンテナ、上空心差動ア、 ンテナの切換
え形成によって自動的に深度を測定することができるか
ら深度の自動測定をなしくワるとともに機構を簡潔にし
て取扱い容易である等の効果を発揮する。(Effect of the invention) The present invention selects the height above the ground of the lower horizontal receiving coil,
By switching between the lower air-centered differential antenna, the upper air-centered differential antenna, and the antenna, the depth can be measured automatically, eliminating the need for automatic depth measurement, and the mechanism is simple and easy to handle. demonstrate.
第１図は本発明′４Ａ置の要部を示す結線図、第２図は
本発明を適用した装置の実施例の正面図、第３図は同・
関連機構とともに表わした側面図である。
２・・・棒状ケース、３・・・下水平受信コイル、４・
・・中水平受信コイル、５・・・上水平受信コイル、６
・・・スイッチ、７・・・下空心差動アンテナ、８・・
・上空心差動アンテナ、１１・・・電圧測定機構、１２
・・・計算機構、１４・・・深度計。
蔓 ｌ 図Fig. 1 is a wiring diagram showing the main parts of the present invention'4A device, Fig. 2 is a front view of an embodiment of the device to which the present invention is applied, and Fig. 3 is the same.
FIG. 3 is a side view showing related mechanisms. 2... Rod-shaped case, 3... Lower horizontal receiving coil, 4...
... Middle horizontal receiving coil, 5... Upper horizontal receiving coil, 6
...Switch, 7...Lower air-centered differential antenna, 8...
・Air-centered differential antenna, 11... Voltage measurement mechanism, 12
...Calculation mechanism, 14...Depth meter. vine l diagram
Claims (1)
信コイルと中水平受信コイルと上水平受信コイルを設け
るとともに前記下水平受信コイルを所定地上高さとし、
前記中水平受信コイルを前記下水平受信コイルと逆極性
に結線して下空心差動アンテナを形成自在とし、または
前記中水平受信コイルを前記上水平受信コイルと逆極性
に結線して上空心差動アンテナを形成自在とするよう切
換自在とし、下空心差動アンテナの出力電圧と上空心差
動アンテナの出力電圧と、下水平受信コイルの所定地上
高さとにより深度を測定するようにしたことを特徴とす
る埋設鉄管等の深度測定装置。A lower horizontal receiving coil, a middle horizontal receiving coil, and an upper horizontal receiving coil are arranged at equal intervals in the vertical direction, and the lower horizontal receiving coil is at a predetermined height above the ground;
The middle horizontal receiving coil can be wired in opposite polarity to the lower horizontal receiving coil to form a lower air-centered differential antenna, or the middle horizontal receiving coil can be wired in opposite polarity to the upper horizontal receiving coil to form an upper air-centered differential antenna. The antenna is switchable so that the dynamic antenna can be configured freely, and the depth is measured using the output voltage of the lower air-centered differential antenna, the output voltage of the upper air-core differential antenna, and the predetermined height above the ground of the lower horizontal receiving coil. Features: Depth measuring device for buried iron pipes, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60206036A JPS6266184A (en) | 1985-09-18 | 1985-09-18 | Depth measuring instrument for buried iron pipe or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60206036A JPS6266184A (en) | 1985-09-18 | 1985-09-18 | Depth measuring instrument for buried iron pipe or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6266184A true JPS6266184A (en) | 1987-03-25 |
Family
ID=16516834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60206036A Pending JPS6266184A (en) | 1985-09-18 | 1985-09-18 | Depth measuring instrument for buried iron pipe or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6266184A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423190A (en) * | 1987-07-17 | 1989-01-25 | Fuji Tekomu Kk | Receiving antenna for depth measuring instrument for buried iron pipe or the like |
| JPH04116794U (en) * | 1991-03-29 | 1992-10-20 | 大阪瓦斯株式会社 | Direction detection coil device for detecting buried metal pipes, etc. |
| GB2458119A (en) * | 2008-03-03 | 2009-09-09 | Radiodetection Ltd | A detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor |
| GB2458121A (en) * | 2008-03-03 | 2009-09-09 | Radiodetection Ltd | A detector for calculating a depth of a buried conductor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS499388A (en) * | 1972-05-26 | 1974-01-26 | ||
| JPS5756769A (en) * | 1980-09-22 | 1982-04-05 | Shimizu Kiko Kk | Searcher for buried metallic pipe |
| JPS59162474A (en) * | 1983-02-16 | 1984-09-13 | マ−ク・イアン・ホウエル | Electromagnetic surveying device for conductor |
-
1985
- 1985-09-18 JP JP60206036A patent/JPS6266184A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS499388A (en) * | 1972-05-26 | 1974-01-26 | ||
| JPS5756769A (en) * | 1980-09-22 | 1982-04-05 | Shimizu Kiko Kk | Searcher for buried metallic pipe |
| JPS59162474A (en) * | 1983-02-16 | 1984-09-13 | マ−ク・イアン・ホウエル | Electromagnetic surveying device for conductor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423190A (en) * | 1987-07-17 | 1989-01-25 | Fuji Tekomu Kk | Receiving antenna for depth measuring instrument for buried iron pipe or the like |
| JPH04116794U (en) * | 1991-03-29 | 1992-10-20 | 大阪瓦斯株式会社 | Direction detection coil device for detecting buried metal pipes, etc. |
| GB2458119A (en) * | 2008-03-03 | 2009-09-09 | Radiodetection Ltd | A detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor |
| GB2458121A (en) * | 2008-03-03 | 2009-09-09 | Radiodetection Ltd | A detector for calculating a depth of a buried conductor |
| GB2458119B (en) * | 2008-03-03 | 2010-12-29 | Radiodetection Ltd | A detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor |
| EP2098889A3 (en) * | 2008-03-03 | 2011-03-16 | Radiodetection Limited | A detector for calculating a depth of a buried conductor |
| EP2098888A3 (en) * | 2008-03-03 | 2011-03-23 | Radiodetection Limited | A detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor |
| GB2458121B (en) * | 2008-03-03 | 2012-01-25 | Radiodetection Ltd | A detector for calculating a depth of a buried conductor |
| US8183851B2 (en) | 2008-03-03 | 2012-05-22 | Radiodetection | Detector for calculating a depth of a buried conductor |
| US8566043B2 (en) | 2008-03-03 | 2013-10-22 | Radiodetection Limited | Detector for calculating the distortion of an electromagnetic field produced by a buried current carrying conductor |
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