WO2004086095A1 - 金属検出装置 - Google Patents
金属検出装置 Download PDFInfo
- Publication number
- WO2004086095A1 WO2004086095A1 PCT/JP2004/002838 JP2004002838W WO2004086095A1 WO 2004086095 A1 WO2004086095 A1 WO 2004086095A1 JP 2004002838 W JP2004002838 W JP 2004002838W WO 2004086095 A1 WO2004086095 A1 WO 2004086095A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic field
- signal
- metal
- data
- output
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
Definitions
- the signal R at this time includes not only the signal component caused by the influence of the mixed metal on the alternating magnetic field E, but also the signal component caused by the effect of the test object 1 itself (including the packaging material) on the alternating magnetic field E.
- the detection limit of the mixed metal is determined by the signal component of the test object 1 itself.
- a detector 26 for synchronously detecting the output signal of the magnetic field change detector 23 with a signal having the same frequency as the signal output from the signal generator 21; Determining means 31 for comparing the output signal of the detection unit 26 with a threshold value to determine the presence or absence of metal mixed in the test object;
- a metal detector having an indicator 36
- FIG. 5 is a Lissajous figure of a detection output.
- FIG. 8 is a flowchart showing a processing procedure in a main part of the inspection mode in the inspection mode.
- FIG. 9 is a Lissajous figure in an optimal detection phase state.
- FIG. 14 is a plan view of a second embodiment of the present invention.
- the transmission coil 22 receives the signal D, and generates an alternating magnetic field E having a frequency f equal to the signal D in the transport path 2 of the DUT 1 (generally formed by a conveyor) 2.
- the alternating magnetic field E generated by the transmission coil 22 is used for the two reception coils of the magnetic field change detection unit 23.
- the magnetic field change detection unit 23 may be configured to perform subtraction processing on the signal obtained by the analog subtractor.
- the difference between the signals generated in the receiving coils 23a and 23b is calculated by using a variable resistor and a different amplification factor. It may be corrected by an amplifier.
- the detection unit 26 performs synchronous detection of the output signal R of the magnetic field change detection unit 23 using a signal having the same frequency as the signal D.
- the control unit 30 detects the entry of the DUT 1 into the alternating magnetic field E from the output signal of the entry sensor 24 (or the change in the output signals X and Y of the detection unit as described above), and The output signals X and Y of the sample 1 are fetched, and the data of the fetched signal is compared with a preset threshold value to determine whether or not metal is mixed in the device under test 1.
- Judgment means 31 for outputting the judgment result, setting means 32 for setting various parameters necessary for the inspection of the object 1 to be inspected, and data necessary for the parameter setting and parameter setting And a non-volatile memory 33 for storing the size of the metal contained in the test object when it is determined by the semi-determining means 31 that the metal has entered the test object. 36, a mixed metal display means 34 for displaying.
- the parameters required for the inspection are the length and transport speed of the DUT 1, the frequency of the signal D output from the signal generator 21, the detection phase of the detector 26 (the phase shift of the phase shifter 26a). Amount), threshold values for determining the presence or absence of foreign matter, and the like.
- the detection phase of the skin 26 is a parameter for determining the sensitivity to the contaminated metal.
- the setting means 32 is configured so that these parameters can be manually or semi-automatically set by operating the operation unit 35.Here, the detection phase is set to an optimum value, and the detection phase is set to the optimum value. Next, a process for setting a threshold value for determining the presence or absence of a foreign substance will be described.
- FIG. 1 shows only the signal lines necessary for the detection phase setting process, in actuality, the frequency of the signal D output from the signal generator 21 and the BPF 2 6c, 26f band etc. can be controlled.
- FIG. 2 is a flowchart showing a processing procedure of the setting means 32 relating to the setting of the detection phase and the threshold value. Hereinafter, the setting processing operation will be described according to this flowchart.
- the setting means 32 sets the information of the optimum detection phase ⁇ i stored in the predetermined area 33c of the memory 33 to the phase shifter 26a. Set the detection phase of the detection unit 26 to the optimum detection phase 0 i. Know other parameters, including the value V r, where needed.
- the inspection of the inspection object 1 by the determining means 31 is performed.
- the upper limit value da of the mixed metal mixed in from the equation of the straight line B and the ratio aa and the lower limit value db of the mixed metal diameter in the formula of the straight line B and the ratio ab. Is displayed on the display 36 as shown in FIG. 10, for example, as a range of the size of the metal mixed in the test object 1.
- the drive port roller 133 is rotatably supported between the upper ends of both ends of the plates 13 1 and 13 2 (the left end in Figs. 13 and 14), and between the upper ends of the other ends.
- Driven roller 1 3 4 can rotate freely And an endless transport belt 135 for transporting the conveyed articles is stretched between the drive roller 133 and the driven roller 134.
- the drive roller 133 is driven to rotate by a motor 133 integrally provided at one end thereof.
- a head 140 formed in a horizontally long rectangular frame shape is arranged above the center of the side plates 13 1 and 13 2.
- the conveyor belt 130 and the lower plate 136 of the conveyor 130 pass through a large hole 141 formed in the center of the head 140 in a horizontally long arrow.
- the metal detection device of this example is provided with a mechanism that can adjust the position of the head 140 with respect to the conveyor 130 (the height of the conveyor 130). Even if the conditions other than the height of 0 are the same, if the height of the conveyor 130 is set to a different value, the detection sensitivity of the metal mixed into the test object may be different.
- the diameter dr of the metallic foreign matter corresponding to the reference value ar is obtained from the straight line B and displayed on the display 36 as the minimum size of metallic foreign matter that can be detected by the semi-IJ determining means 31 (S1 15).
- the reference value ar and the minimum detectable metal foreign matter size are stored in the memory 33 (S116).
- the first procedure described above is executed with the conveyor 130 set at, for example, the reference position shown in FIG. 16 (a).
- the size of the foreign matter (metal) that can be detected is displayed for each of the three heights.
- the detection sensitivity is highest at the position shown in Fig. 16 (b) in the middle. Shows the case where the result was high.
- the conveyor 130 is more likely to be located at a reference position closest to the head 140 (FIG. 16 (a)) or at a position far away from the reference position (FIG. 16 (c)).
- the detection sensitivity was the highest when it was located at an appropriate distance from the intermediate reference position (Fig. 16 (b)).
- the transmitting coil 122 and the two receiving coils 123 a and 123 b are provided at any position of the head 140 in any manner.
- the optimal position of the conveyor 130 with respect to the head 140 (the position where the sensitivity is the highest) can be changed.
- the optimum conveyor height for foreign object detection is always selected and the There is no change in the effect that the detection can be performed.
- the head 140 is moved up and down to change the height (position) of the conveyor 130 relative to the head 140.
- the conveyor 130 may be moved up and down with respect to the node 140.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04717758.9A EP1602943B1 (en) | 2003-03-12 | 2004-03-05 | Metal detector |
JP2005503989A JP4198712B2 (ja) | 2003-03-12 | 2004-03-05 | 金属検出装置 |
US10/548,629 US7423422B2 (en) | 2003-03-12 | 2004-03-05 | Metal detector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-066569 | 2003-03-12 | ||
JP2003066569 | 2003-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004086095A1 true WO2004086095A1 (ja) | 2004-10-07 |
Family
ID=33094814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/002838 WO2004086095A1 (ja) | 2003-03-12 | 2004-03-05 | 金属検出装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7423422B2 (ja) |
EP (1) | EP1602943B1 (ja) |
JP (1) | JP4198712B2 (ja) |
KR (1) | KR100634648B1 (ja) |
CN (1) | CN100344996C (ja) |
WO (1) | WO2004086095A1 (ja) |
Cited By (6)
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JP2012154675A (ja) * | 2011-01-24 | 2012-08-16 | Anritsu Sanki System Co Ltd | 金属検出装置 |
JP2012154674A (ja) * | 2011-01-24 | 2012-08-16 | Anritsu Sanki System Co Ltd | 金属検出装置 |
WO2015049766A1 (ja) * | 2013-10-03 | 2015-04-09 | 株式会社システムスクエア | 金属検知装置 |
JP2019012085A (ja) * | 2018-10-22 | 2019-01-24 | 株式会社荏原製作所 | 金属検知用センサー及び該センサーを用いた金属検知方法 |
JP2021128086A (ja) * | 2020-02-14 | 2021-09-02 | 株式会社Ihi | 渦電流探傷装置 |
US11762118B2 (en) | 2019-06-27 | 2023-09-19 | Anritsu Corporation | Metal detection apparatus |
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FR2881826A1 (fr) * | 2005-02-04 | 2006-08-11 | Commissariat Energie Atomique | Procede de conception et de realisation d'un dispositif de controle a courants de foucault |
GB2462212B (en) * | 2005-02-16 | 2010-05-12 | Illinois Tool Works | Metal detector |
GB2441346B (en) * | 2006-09-01 | 2011-04-13 | Qinetiq Ltd | Metal object detecting apparatus |
EP2269096A1 (de) * | 2008-04-23 | 2011-01-05 | Mesutronic Gerätebau GmbH | Digital arbeitende einrichtung zur feststellung metallisch leitender teile |
WO2009130019A1 (de) * | 2008-04-23 | 2009-10-29 | Mesutronic Gerätebau GmbH | Einrichtung zur feststellung metallisch leitender teile |
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CN103180760B (zh) | 2010-10-07 | 2016-10-26 | 梅特勒-托利多安全线有限公司 | 用于操作金属探测系统的方法以及金属探测系统 |
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JP5793963B2 (ja) | 2011-05-27 | 2015-10-14 | 日産自動車株式会社 | 非接触給電装置 |
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US9018935B2 (en) | 2011-09-19 | 2015-04-28 | Mettler-Toledo Safeline Limited | Method for operating a metal detection apparatus and apparatus |
DE102012205285A1 (de) | 2012-03-30 | 2013-10-02 | Bayerische Motoren Werke Aktiengesellschaft | Vorrichtung zur induktiven Leistungsübertragung |
KR101328902B1 (ko) * | 2012-10-29 | 2013-11-13 | 라채식 | 검출감도를 향상시킨 식품내 잔존 금속검출기 |
CN103389516B (zh) * | 2013-07-23 | 2015-08-26 | 沈阳斯达特电子科技有限公司 | 金属探测识别方法 |
CL2014001897A1 (es) * | 2014-07-18 | 2014-09-22 | Cadetech S A | Un sistema de monitoreo para la deteccion en forma automatica de elementos ferromagneticos ocultos en la carga de mineral, durante la carga y/o descarga de un contenedor, dicho sistema comprende al menos un sensor de campo magnetico, un computador, un canal de comunicacion de corto alcance, un visualizador, un canal de comunicacion de largo alcance, una fuente de energia, y sensores auxiliares. |
EP3207392B1 (en) * | 2014-10-17 | 2020-09-02 | Koninklijke Philips N.V. | Spatially resolved metal detector |
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CN105676297B (zh) * | 2016-04-21 | 2019-06-25 | 上海明强智能技术有限公司 | 可用于铝箔包装类产品的全金属异物检测装置 |
CN105911602B (zh) * | 2016-05-03 | 2018-08-21 | 东莞市华盾电子科技有限公司 | 一种金属分类的图像显示方法及装置 |
FR3056793A1 (fr) * | 2016-09-29 | 2018-03-30 | Stmicroelectronics (Rousset) Sas | Procede de detection de la presence eventuelle d'un objet par un lecteur sans contact, et lecteur correspondant |
DE102017107436A1 (de) * | 2017-04-06 | 2018-10-11 | Minebea Intec Aachen GmbH & Co. KG | Verfahren zur Signalauswertung, Metallsuchgerät und Computerprogramm |
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WO2019151422A1 (ja) * | 2018-01-31 | 2019-08-08 | キヤノン電子株式会社 | 検査装置 |
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CN110415213A (zh) * | 2019-06-24 | 2019-11-05 | 上海联影医疗科技有限公司 | 磁场均匀性检测方法、装置、计算机设备和存储介质 |
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Citations (6)
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JPH0236390A (ja) * | 1988-07-26 | 1990-02-06 | Yamato Scale Co Ltd | 金属等の異物混入検出方法および検出器 |
JPH03123285U (ja) * | 1990-03-29 | 1991-12-16 | ||
JPH07260943A (ja) * | 1994-03-22 | 1995-10-13 | Sanko Denshi Kenkyusho:Kk | 鉄片探知装置 |
JPH09304546A (ja) * | 1996-05-21 | 1997-11-28 | Nippon Cement Co Ltd | 金属検出方法及び金属検出装置 |
JP2001013260A (ja) | 1999-06-30 | 2001-01-19 | Ishida Co Ltd | 異物検出機 |
JP2001091663A (ja) | 1999-09-21 | 2001-04-06 | Anritsu Corp | 金属検出機 |
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JPH03123285A (ja) | 1989-10-06 | 1991-05-27 | Matsushita Electric Ind Co Ltd | 動ベクトル検出装置 |
JP3429397B2 (ja) * | 1995-08-28 | 2003-07-22 | 東芝キヤリア株式会社 | 空気調和装置 |
US6812707B2 (en) * | 2001-11-27 | 2004-11-02 | Mitsubishi Materials Corporation | Detection element for objects and detection device using the same |
JP3123285U (ja) * | 2006-02-09 | 2006-07-20 | 正次 江川 | 遠心バネ錘円板 |
-
2004
- 2004-03-05 JP JP2005503989A patent/JP4198712B2/ja not_active Expired - Lifetime
- 2004-03-05 KR KR1020057006369A patent/KR100634648B1/ko active IP Right Grant
- 2004-03-05 WO PCT/JP2004/002838 patent/WO2004086095A1/ja active Application Filing
- 2004-03-05 US US10/548,629 patent/US7423422B2/en not_active Expired - Lifetime
- 2004-03-05 EP EP04717758.9A patent/EP1602943B1/en not_active Expired - Lifetime
- 2004-03-05 CN CNB2004800065477A patent/CN100344996C/zh not_active Expired - Lifetime
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JPH0236390A (ja) * | 1988-07-26 | 1990-02-06 | Yamato Scale Co Ltd | 金属等の異物混入検出方法および検出器 |
JPH03123285U (ja) * | 1990-03-29 | 1991-12-16 | ||
JPH07260943A (ja) * | 1994-03-22 | 1995-10-13 | Sanko Denshi Kenkyusho:Kk | 鉄片探知装置 |
JPH09304546A (ja) * | 1996-05-21 | 1997-11-28 | Nippon Cement Co Ltd | 金属検出方法及び金属検出装置 |
JP2001013260A (ja) | 1999-06-30 | 2001-01-19 | Ishida Co Ltd | 異物検出機 |
JP2001091663A (ja) | 1999-09-21 | 2001-04-06 | Anritsu Corp | 金属検出機 |
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Title |
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See also references of EP1602943A4 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012154675A (ja) * | 2011-01-24 | 2012-08-16 | Anritsu Sanki System Co Ltd | 金属検出装置 |
JP2012154674A (ja) * | 2011-01-24 | 2012-08-16 | Anritsu Sanki System Co Ltd | 金属検出装置 |
WO2015049766A1 (ja) * | 2013-10-03 | 2015-04-09 | 株式会社システムスクエア | 金属検知装置 |
JP2019012085A (ja) * | 2018-10-22 | 2019-01-24 | 株式会社荏原製作所 | 金属検知用センサー及び該センサーを用いた金属検知方法 |
US11762118B2 (en) | 2019-06-27 | 2023-09-19 | Anritsu Corporation | Metal detection apparatus |
JP2021128086A (ja) * | 2020-02-14 | 2021-09-02 | 株式会社Ihi | 渦電流探傷装置 |
Also Published As
Publication number | Publication date |
---|---|
CN100344996C (zh) | 2007-10-24 |
KR100634648B1 (ko) | 2006-10-16 |
JPWO2004086095A1 (ja) | 2006-06-29 |
US7423422B2 (en) | 2008-09-09 |
JP4198712B2 (ja) | 2008-12-17 |
CN1759329A (zh) | 2006-04-12 |
EP1602943B1 (en) | 2014-06-18 |
KR20050070052A (ko) | 2005-07-05 |
EP1602943A4 (en) | 2008-11-12 |
EP1602943A1 (en) | 2005-12-07 |
US20060226833A1 (en) | 2006-10-12 |
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