JP5165347B2 - 位置測定装置 - Google Patents
位置測定装置 Download PDFInfo
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- JP5165347B2 JP5165347B2 JP2007305087A JP2007305087A JP5165347B2 JP 5165347 B2 JP5165347 B2 JP 5165347B2 JP 2007305087 A JP2007305087 A JP 2007305087A JP 2007305087 A JP2007305087 A JP 2007305087A JP 5165347 B2 JP5165347 B2 JP 5165347B2
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- coil
- axis
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- position measuring
- detection
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- 238000001514 detection method Methods 0.000 claims description 25
- 230000005284 excitation Effects 0.000 claims description 25
- 230000005484 gravity Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 description 12
- 230000010355 oscillation Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- -1 antifreeze Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Description
以下の数2のように表すことができ、電圧Vu、Vv、Vwから得られる電圧|Vo|(絶対値)は磁界|Ho|(絶対値)に比例した電圧となる。
(1/2)tanθ=tanφ=tan(α−θ)
=(tanα−tanθ)/(1+tanα・tanθ)
ここで、tanα=βとすると、
(1/2)tanθ=(β−tanθ)/(1+β・tanθ)であり、本式からtanθを以下の数13で表すことができ、この式(13)から角度θを以下の数14で表すことができる。
tanω=|Hv|/|Hu|
として表すことができ、UコイルならびにVコイルでの誘起電圧Vu、Vvの大きさから以下の数17を用いて角度ωを求めることができる。
14 励磁コイル
20 受信器
16、16−1 外筐体
16−2 内筐体
17 吊り下げ線
18 液体
Claims (3)
- コイルの中心軸方向が重力方向を保てるようにして第一の地点に配置された一軸の励磁コイルと、
該励磁コイルに交流信号を供給して励磁するための信号発生回路と、
中心軸が互いに直交するようにし、しかも1つのコイルの軸心を重力方向として第二の地点に配置された第一、第二、第三の検出コイルと、
前記第一、第二、第三の検出コイルの出力から電圧信号を得る回路とを含み、
前記励磁コイルを励磁して前記第一、第二、第三の検出コイルに誘起される誘起電圧を用いて予め定められた演算を行うことにより、前記第二の地点から前記第一の地点までの方位と距離を算出することを特徴とする位置測定装置。 - 請求項1に記載の位置測定装置において、前記励磁コイルは中心軸が常に重力方向を保てるようにつり下げられていることを特徴とする位置測定装置。
- 請求項1に記載の位置測定装置において、前記励磁コイルは中心軸が常に重力方向を保てるように液体中に浮かべたフロート構造で支えられていることを特徴とする位置測定装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007305087A JP5165347B2 (ja) | 2007-11-26 | 2007-11-26 | 位置測定装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2007305087A JP5165347B2 (ja) | 2007-11-26 | 2007-11-26 | 位置測定装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009128253A JP2009128253A (ja) | 2009-06-11 |
JP5165347B2 true JP5165347B2 (ja) | 2013-03-21 |
Family
ID=40819321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2007305087A Active JP5165347B2 (ja) | 2007-11-26 | 2007-11-26 | 位置測定装置 |
Country Status (1)
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JP (1) | JP5165347B2 (ja) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61108920A (ja) * | 1984-10-31 | 1986-05-27 | Shimadzu Corp | 差圧式流量計 |
US5070462A (en) * | 1989-09-12 | 1991-12-03 | Flowmole Corporation | Device for locating a boring machine |
JPH07198407A (ja) * | 1993-12-28 | 1995-08-01 | Shimadzu Corp | 磁気測定器 |
JP2866078B2 (ja) * | 1997-03-27 | 1999-03-08 | 日本電信電話株式会社 | 掘削推進機の位置探査装置及び位置探査方法 |
JP2001173364A (ja) * | 1999-12-21 | 2001-06-26 | Kidoh Construction Co Ltd | 電磁誘導を用いた平面位置計測方法 |
US6484118B1 (en) * | 2000-07-20 | 2002-11-19 | Biosense, Inc. | Electromagnetic position single axis system |
JP2003004409A (ja) * | 2001-06-26 | 2003-01-08 | Reideikku:Kk | 位置測定方式及び位置測定装置 |
JP2005027249A (ja) * | 2003-07-04 | 2005-01-27 | Reideikku:Kk | 地盤測定装置用のアンテナ |
JP2007255986A (ja) * | 2006-03-22 | 2007-10-04 | Sakata Denki | 位置測定方式 |
JP2008002202A (ja) * | 2006-06-23 | 2008-01-10 | Toa Harbor Works Co Ltd | 地中位置検出装置 |
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2007
- 2007-11-26 JP JP2007305087A patent/JP5165347B2/ja active Active
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JP2009128253A (ja) | 2009-06-11 |
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