JP5482039B2 - 検知装置 - Google Patents
検知装置 Download PDFInfo
- Publication number
- JP5482039B2 JP5482039B2 JP2009206051A JP2009206051A JP5482039B2 JP 5482039 B2 JP5482039 B2 JP 5482039B2 JP 2009206051 A JP2009206051 A JP 2009206051A JP 2009206051 A JP2009206051 A JP 2009206051A JP 5482039 B2 JP5482039 B2 JP 5482039B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- signal
- magnetic field
- turns
- current
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims description 28
- 239000000696 magnetic material Substances 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 15
- 230000005330 Barkhausen effect Effects 0.000 claims description 14
- 230000005284 excitation Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 10
- 238000013459 approach Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910020711 Co—Si Inorganic materials 0.000 description 1
- 229910002555 FeNi Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Landscapes
- Burglar Alarm Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
Description
12,13 受信コイル
16 巻数切替え部
21 アナログ信号処理部
22 信号判別部
30 警告灯
31 差動増幅アンプ
35 CPU
Claims (2)
- 交番磁界を発生する磁界発生コイルと、
巻数が変更可能であり、前記交番磁界により電流が誘導される第1のコイルと、
前記第1のコイルと異なる位置に配置され、前記交番磁界により電流が誘導される第2のコイルと、
前記第1及び第2のコイルからそれぞれ出力される信号に基づく差動信号が一定時間以上閾値を超えた場合に、前記第1及び前記第2のコイルに誘導される電流の大きさの差が小さくなるように、前記第1のコイルの巻数を切り替える巻数切替え手段と、
前記差動信号に基づいて、大バルクハウゼン効果を有する磁性体を検知する検知手段と、
を備えた検知装置。 - 前記検知手段は、巻数切替え手段の切替え動作により前記差動信号の周波数が閾値周波数より高くなった場合に、一定時間経過してから、前記差動信号に基づいて磁性体を検知する
請求項1記載の検知装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009206051A JP5482039B2 (ja) | 2009-09-07 | 2009-09-07 | 検知装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009206051A JP5482039B2 (ja) | 2009-09-07 | 2009-09-07 | 検知装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011058840A JP2011058840A (ja) | 2011-03-24 |
JP5482039B2 true JP5482039B2 (ja) | 2014-04-23 |
Family
ID=43946662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009206051A Expired - Fee Related JP5482039B2 (ja) | 2009-09-07 | 2009-09-07 | 検知装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5482039B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014057185A (ja) * | 2012-09-12 | 2014-03-27 | Ricoh Co Ltd | 無線給電装置及び電子機器 |
US10288759B2 (en) * | 2016-07-14 | 2019-05-14 | Mitsubishi Electric Research Laboratories, Inc. | Contactless semsor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6465485A (en) * | 1987-09-04 | 1989-03-10 | Anritsu Corp | Metal detector |
JP2009031966A (ja) * | 2007-07-26 | 2009-02-12 | Fuji Xerox Co Ltd | 携行物管理ゲート |
-
2009
- 2009-09-07 JP JP2009206051A patent/JP5482039B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2011058840A (ja) | 2011-03-24 |
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