JP2005337972A - 堆積物の調査方法 - Google Patents
堆積物の調査方法 Download PDFInfo
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Abstract
【解決手段】 本発明による堆積物の調査方法は、低周波数の発振回路12と該発振回路の出力で励磁されて低周波磁界を発生するコイル13と前記発振回路に電力を供給する電源11からなる送信部10と、該送信部の磁気信号を受信するコイル21と受信した信号を解析する、例えば周波数カウンタ23からなる移動自在の受信部20とを使用し、前記送信部を調査対象となる河川敷などの地域に疑似堆積物として配置し、水流などで移動した前記送信部の位置を前記受信部で検出することにより堆積物の動きを調査する。
【選択図】 図1
Description
11 電源
12 発振回路
13 第一のコイル
20 受信部
21 第二のコイル
22 受信回路
23 周波数カウンタ
Claims (4)
- 低周波数の発振回路と該発振回路の出力で励磁されて低周波磁界を発生するコイルと前記発振回路に電力を供給する電源からなる送信部と、該送信部の磁気信号を受信するコイルと受信した信号を解析する回路を含む移動自在の受信部とを使用し、前記送信部を調査対象となる河川敷などの地域に疑似堆積物として配置し、水流などで移動した前記送信部の位置を前記受信部で検出することにより堆積物の動きを調査することを特徴とする堆積物の調査方法。
- 請求項1に記載の堆積物の調査方法において、前記送信部を調査対象となる河川の岩石、コンクリート塊等の内部あるいは表面に設置し、水流などで移動した前記送信部の位置を前記受信部で検出することにより堆積物の動きを調査することを特徴とする堆積物の調査方法。
- 請求項1または2に記載の堆積物の調査方法において、複数の前記送信部をそれぞれの発振周波数を個別に変えて同時に用い、前記受信部において受信した磁気信号をFFT解析することで、前記複数の送信部を同時に識別することを特徴とする堆積物の調査方法。
- 請求項1〜3のいずれかに記載の堆積物の調査方法において、前記受信部に少なくとも2個の受信コイルを用い、それぞれのコイル軸が異なる方向となるように組み合わせて使用することを特徴とする堆積物の調査方法。
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JP2004159382A JP4214083B2 (ja) | 2004-05-28 | 2004-05-28 | 堆積物の調査方法 |
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JP2004159382A JP4214083B2 (ja) | 2004-05-28 | 2004-05-28 | 堆積物の調査方法 |
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JP2005337972A true JP2005337972A (ja) | 2005-12-08 |
JP4214083B2 JP4214083B2 (ja) | 2009-01-28 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009210566A (ja) * | 2008-02-04 | 2009-09-17 | Tokyo Rigaku Kensa Kk | 位置計測方法及び位置計測装置 |
JP2012063259A (ja) * | 2010-09-16 | 2012-03-29 | Nikka Densoku Kk | 金属検出機 |
JP2017066833A (ja) * | 2015-10-02 | 2017-04-06 | 公益財団法人鉄道総合技術研究所 | 土砂移動観測システム |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6238301A (ja) * | 1985-08-13 | 1987-02-19 | コミツサリア ア レネルジイ アトミツク | 物体の空間における位置及び方向を決定する装置及び方法 |
JP2001099831A (ja) * | 1999-09-30 | 2001-04-13 | Oyo Corp | 流出土砂の流送堆積状況の調査方法 |
JP2002092255A (ja) * | 2000-09-14 | 2002-03-29 | Dainippon Printing Co Ltd | 調査用配布物及び該調査用配布物を用いた調査方法及び調査システム |
JP2002365046A (ja) * | 2001-06-05 | 2002-12-18 | Takuwa Corp | 流砂系における河床低下測定装置 |
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2004
- 2004-05-28 JP JP2004159382A patent/JP4214083B2/ja not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6238301A (ja) * | 1985-08-13 | 1987-02-19 | コミツサリア ア レネルジイ アトミツク | 物体の空間における位置及び方向を決定する装置及び方法 |
JP2001099831A (ja) * | 1999-09-30 | 2001-04-13 | Oyo Corp | 流出土砂の流送堆積状況の調査方法 |
JP2002092255A (ja) * | 2000-09-14 | 2002-03-29 | Dainippon Printing Co Ltd | 調査用配布物及び該調査用配布物を用いた調査方法及び調査システム |
JP2002365046A (ja) * | 2001-06-05 | 2002-12-18 | Takuwa Corp | 流砂系における河床低下測定装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009210566A (ja) * | 2008-02-04 | 2009-09-17 | Tokyo Rigaku Kensa Kk | 位置計測方法及び位置計測装置 |
JP2012063259A (ja) * | 2010-09-16 | 2012-03-29 | Nikka Densoku Kk | 金属検出機 |
JP2017066833A (ja) * | 2015-10-02 | 2017-04-06 | 公益財団法人鉄道総合技術研究所 | 土砂移動観測システム |
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