BG37230A3 - Method and device for detecting metal items - Google Patents
Method and device for detecting metal itemsInfo
- Publication number
- BG37230A3 BG37230A3 BG057403A BG5740382A BG37230A3 BG 37230 A3 BG37230 A3 BG 37230A3 BG 057403 A BG057403 A BG 057403A BG 5740382 A BG5740382 A BG 5740382A BG 37230 A3 BG37230 A3 BG 37230A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- loop
- metal object
- cycle
- cycles
- control unit
- Prior art date
Links
- 239000002184 metal Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU812248A HU184962B (en) | 1981-08-03 | 1981-08-03 | Loop-sensor of eddy current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG37230A3 true BG37230A3 (en) | 1985-04-15 |
Family
ID=10958494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG057403A BG37230A3 (en) | 1981-08-03 | 1982-07-14 | Method and device for detecting metal items |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4595877A (pt) |
| EP (1) | EP0071873A3 (pt) |
| JP (1) | JPS5830689A (pt) |
| AU (1) | AU557259B2 (pt) |
| BG (1) | BG37230A3 (pt) |
| BR (1) | BR8204047A (pt) |
| CA (1) | CA1217255A (pt) |
| DD (1) | DD202475A5 (pt) |
| ES (1) | ES514193A0 (pt) |
| HU (1) | HU184962B (pt) |
| MX (1) | MX151966A (pt) |
| PL (1) | PL139691B1 (pt) |
| SU (1) | SU1246905A3 (pt) |
| YU (1) | YU154582A (pt) |
| ZA (1) | ZA824554B (pt) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2131552B (en) * | 1982-11-26 | 1986-12-31 | Atomic Energy Authority Uk | Non-destructive testing using eddy-currents |
| GB8917449D0 (en) * | 1989-07-31 | 1989-09-13 | Diagnostic Developments Limite | Electromagnetic scanning system |
| US5198764A (en) * | 1991-02-22 | 1993-03-30 | Sentech Corp. | Position detector apparatus and method utilizing a transient voltage waveform processor |
| US5760573A (en) * | 1993-11-18 | 1998-06-02 | Texas Instruments Incorporated | Plasma density monitor and method |
| DE4417931C1 (de) * | 1994-05-19 | 1995-08-17 | Inst Umwelttechnologien Gmbh | Schaltungsanordnung zur Wahrnehmung und Ortung von Metallgegenständen |
| US5652577A (en) * | 1994-10-27 | 1997-07-29 | Frasier Products, Inc. | Device and method for passively activating inductive loop sensor |
| US6600320B2 (en) * | 1996-03-25 | 2003-07-29 | The Johns Hopkins University | Apparatus with movable receiver coil array for locating a buried metallic object |
| US6072408A (en) * | 1997-09-26 | 2000-06-06 | Baer; Chuck E. | Simulating the presence of a large motor vehicle in an inductive loop of a vehicular traffic signal light control system |
| US6781524B1 (en) * | 2000-03-17 | 2004-08-24 | Magnemotion, Inc. | Passive position-sensing and communications for vehicles on a pathway |
| AU781988B2 (en) * | 2000-10-17 | 2005-06-23 | Minelab Electronics Pty Limited | Interference cancelling metal detector |
| US6690169B2 (en) * | 2000-10-17 | 2004-02-10 | Bhc Consulting Pty Ltd | Interference cancelling metal detector including electronic selection of effective sensing coil arrangement |
| FR2827677B1 (fr) * | 2001-07-19 | 2003-10-31 | Senstronic Sa | Procede de detection d'un objet en un materiau conducteur et capteur correspondant |
| US6945845B2 (en) * | 2003-03-04 | 2005-09-20 | Applied Materials, Inc. | Chemical mechanical polishing apparatus with non-conductive elements |
| US7116107B2 (en) * | 2004-09-10 | 2006-10-03 | Abitibi Geophysics Inc. | Transmitter loops in series for electromagnetic geophysical surveys |
| US20070044676A1 (en) * | 2005-07-22 | 2007-03-01 | Magnemotion Inc. | Guideway activated magnetic switching of vehicles |
| US8616134B2 (en) | 2009-01-23 | 2013-12-31 | Magnemotion, Inc. | Transport system powered by short block linear synchronous motors |
| US9032880B2 (en) | 2009-01-23 | 2015-05-19 | Magnemotion, Inc. | Transport system powered by short block linear synchronous motors and switching mechanism |
| RU2488889C1 (ru) * | 2012-06-18 | 2013-07-27 | Общество с ограниченной ответственностью "АМ Девелопмент" | Способ обнаружения движущихся электропроводящих объектов и устройство для его осуществления |
| US9802507B2 (en) | 2013-09-21 | 2017-10-31 | Magnemotion, Inc. | Linear motor transport for packaging and other uses |
| CN104916128A (zh) * | 2015-04-07 | 2015-09-16 | 北京长城金点物联网科技股份有限公司 | 一种车辆流量检测方法及系统 |
| CN105403232B (zh) * | 2015-11-30 | 2018-11-02 | 国家电网公司 | 新型电涡流传感器组合装置 |
| US9885799B1 (en) | 2016-07-25 | 2018-02-06 | Hm Electronics, Inc. | Vehicle detection loop and loop deterioration assessment |
| RU176263U1 (ru) * | 2017-08-15 | 2018-01-15 | Владимир Алексеевич Некрасов | Устройство для электромагнитной разведки и измерения фонового электростатического поля в биосфере земли |
| CN111881558A (zh) * | 2020-07-06 | 2020-11-03 | 武汉大学 | 消除冲击试验中布线回路感应干扰电压的仿真计算方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE305261B (pt) * | 1959-12-30 | 1968-10-21 | Selco Exploration Co Ltd | |
| US3263160A (en) * | 1962-11-28 | 1966-07-26 | Newmont Mining Corp | Time domain electromagnetic induction method and apparatus for detection of massive sulfide ore bodies utilizing pulses of asymmetric waveform |
| DE1698481B1 (de) * | 1963-02-18 | 1969-09-04 | Claus Colani | Vorrichtung zur Untersuchung eines relativ homogenen,gegebenenfalls eine gewisse elektrische Leitfaehigkeit aufweisenden Mediums |
| JPS4731652A (pt) * | 1966-02-22 | 1972-11-13 | ||
| US3538430A (en) * | 1967-05-18 | 1970-11-03 | Jury Ivanovich Bulgakov | Device for detecting ore bodies by measuring unstable electromagnetic fields excited by magnetic field pulses |
| US3943339A (en) * | 1974-04-29 | 1976-03-09 | Canoga Controls Corporation | Inductive loop detector system |
| US4024468A (en) * | 1975-06-18 | 1977-05-17 | White's Electronics, Inc. | Induction balance metal detector with inverse discrimination |
| US4247821A (en) * | 1978-07-20 | 1981-01-27 | Commonwealth Scientific And Industrial Research Organization | Transient electromagnetic prospecting apparatus possessing noise supression features |
-
1981
- 1981-08-03 HU HU812248A patent/HU184962B/hu not_active IP Right Cessation
-
1982
- 1982-06-25 ZA ZA824554A patent/ZA824554B/xx unknown
- 1982-07-12 BR BR8204047A patent/BR8204047A/pt unknown
- 1982-07-14 BG BG057403A patent/BG37230A3/xx unknown
- 1982-07-15 YU YU01545/82A patent/YU154582A/xx unknown
- 1982-07-15 SU SU823466502A patent/SU1246905A3/ru active
- 1982-07-19 CA CA000407588A patent/CA1217255A/en not_active Expired
- 1982-07-20 DD DD82241799A patent/DD202475A5/de unknown
- 1982-07-21 ES ES514193A patent/ES514193A0/es active Granted
- 1982-07-27 EP EP82106783A patent/EP0071873A3/de not_active Withdrawn
- 1982-07-30 MX MX193829A patent/MX151966A/es unknown
- 1982-08-02 AU AU86724/82A patent/AU557259B2/en not_active Ceased
- 1982-08-03 PL PL1982237753A patent/PL139691B1/pl unknown
- 1982-08-03 JP JP57134795A patent/JPS5830689A/ja active Pending
-
1984
- 1984-10-18 US US06/662,263 patent/US4595877A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU557259B2 (en) | 1986-12-18 |
| CA1217255A (en) | 1987-01-27 |
| ES8308639A1 (es) | 1983-10-01 |
| US4595877A (en) | 1986-06-17 |
| PL237753A1 (en) | 1983-03-28 |
| SU1246905A3 (ru) | 1986-07-23 |
| HU184962B (en) | 1984-11-28 |
| AU8672482A (en) | 1983-02-10 |
| BR8204047A (pt) | 1983-07-05 |
| EP0071873A2 (de) | 1983-02-16 |
| YU154582A (en) | 1985-10-31 |
| EP0071873A3 (de) | 1984-09-05 |
| PL139691B1 (en) | 1987-02-28 |
| JPS5830689A (ja) | 1983-02-23 |
| MX151966A (es) | 1985-05-22 |
| ZA824554B (en) | 1983-04-27 |
| ES514193A0 (es) | 1983-10-01 |
| DD202475A5 (de) | 1983-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BG37230A3 (en) | Method and device for detecting metal items | |
| DE3877613D1 (de) | Einrichtung zur messung einer induktivitaet. | |
| US5091697A (en) | Low power, high accuracy magnetometer and magnetic field strength measurement method | |
| KR920012926A (ko) | 유도성 근접 센서 | |
| US3855528A (en) | D-c current measuring circuit | |
| KR890013487A (ko) | 넓은 온도영역 정밀도를 보유하는 플럭스게이트 자력계 장치 및 그 장치에서 온도 보정을 위한 플럭스 게이트 조절방법 | |
| US3809998A (en) | Current regulator for pulse eddy current tester | |
| US3396338A (en) | Instrument-type transformers for unidirectional current circuits | |
| JPS5818767B2 (ja) | 着磁装置 | |
| JPS56158967A (en) | Magnetism detector | |
| US3490042A (en) | Direct current measuring reactance arrangement | |
| SE7904204L (sv) | Elektrisk metapparat med magnetoelektriska anordningar | |
| JPS5776451A (en) | Measuring circuit for eddy current magnetic field | |
| SU123620A2 (ru) | Способ определени гистерезисной кривой в ферромагнитных материалах | |
| SU452921A1 (ru) | Преобразователь посто нного тока в цифровой код | |
| JPS57161631A (en) | Detecting device for surface stress | |
| JPS6475980A (en) | Measuring device for magnetic field | |
| SU398980A1 (ru) | УСТРОЙСТВО дл МОДЕЛИРОВАНИЯ АВТОКОМПЕНСАТОРОВ | |
| JPS56150337A (en) | Electric power source device for electromagnet | |
| SU1206737A1 (ru) | Способ измерени коэрцитивной силы материала движущихс малогабаритных ферромагнитных изделий | |
| SU1610357A1 (ru) | Электродинамический вибростенд | |
| SU794360A1 (ru) | Электромагнитный способизМЕРЕНи диАМЕТРОВ фЕРРОМАгНиТ-НыХ издЕлий | |
| SU509821A1 (ru) | Дефектоскоп | |
| SU1352426A1 (ru) | Устройство дл измерени напр женности магнитного пол | |
| SU954981A1 (ru) | Импульсный стабилизатор посто нного напр жени |