HK1005471A1 - Transient electromagnetic apparatus for detecting irregularities on conductive containers - Google Patents

Transient electromagnetic apparatus for detecting irregularities on conductive containers

Info

Publication number
HK1005471A1
HK1005471A1 HK98104611A HK98104611A HK1005471A1 HK 1005471 A1 HK1005471 A1 HK 1005471A1 HK 98104611 A HK98104611 A HK 98104611A HK 98104611 A HK98104611 A HK 98104611A HK 1005471 A1 HK1005471 A1 HK 1005471A1
Authority
HK
Hong Kong
Prior art keywords
transient electromagnetic
electromagnetic apparatus
detecting irregularities
conductive containers
containers
Prior art date
Application number
HK98104611A
Other languages
English (en)
Inventor
Michael F Gard
Original Assignee
Atlantic Richfield Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlantic Richfield Co filed Critical Atlantic Richfield Co
Publication of HK1005471A1 publication Critical patent/HK1005471A1/xx

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

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)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
HK98104611A 1988-12-29 1998-05-28 Transient electromagnetic apparatus for detecting irregularities on conductive containers HK1005471A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/291,608 US4906928A (en) 1988-12-29 1988-12-29 Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers

Publications (1)

Publication Number Publication Date
HK1005471A1 true HK1005471A1 (en) 1999-01-08

Family

ID=23121010

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98104611A HK1005471A1 (en) 1988-12-29 1998-05-28 Transient electromagnetic apparatus for detecting irregularities on conductive containers

Country Status (8)

Country Link
US (1) US4906928A (fr)
EP (1) EP0379804B1 (fr)
JP (1) JP2834813B2 (fr)
AU (1) AU612533B2 (fr)
CA (1) CA2005549C (fr)
DE (1) DE68915527T2 (fr)
HK (1) HK1005471A1 (fr)
NO (1) NO302634B1 (fr)

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US6795491B2 (en) * 1999-07-22 2004-09-21 Aether Wire & Location Spread spectrum localizers
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US8598867B2 (en) 2010-06-04 2013-12-03 Allegro Microsystems, Llc Circuits and methods for generating a threshold signal used in a motion detector
EP2439560B1 (fr) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Procédé de fonctionnement d'un système de détection de métaux et système de détection de métaux
WO2012045578A1 (fr) 2010-10-07 2012-04-12 Mettlert-Toledo Safeline Limited Procédé d'actionnement d'un système de détection de métal et système de détection de métal
EP2439559B1 (fr) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Procédé de fonctionnement d'un système de détection de métaux et système de détection de métaux
US9018935B2 (en) 2011-09-19 2015-04-28 Mettler-Toledo Safeline Limited Method for operating a metal detection apparatus and apparatus
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CN102944340B (zh) * 2012-11-10 2014-07-23 大连理工大学 一种用于压电智能骨料地震损伤监测系统的电荷电压转换器
US8723512B1 (en) 2012-11-26 2014-05-13 Allegro Microsystems, Llc Circuits and methods for generating a threshold signal used in a magnetic field sensor based on a peak signal associated with a prior cycle of a magnetic field signal
WO2015031009A2 (fr) 2013-08-30 2015-03-05 Allegro Microsystems, Llc Circuits et procédés de production d'un signal de seuil utilisé dans un détecteur de mouvement en fonction d'au moins un multiple commun d'un ensemble de quantités possibles de caractéristiques sur une cible
WO2015138104A2 (fr) 2014-03-11 2015-09-17 Allegro Microsystems, Llc Circuits et procédés pour limiter à un minimum l'écart séparant des seuils dans un capteur de champ magnétique
CN107797150B (zh) * 2017-11-22 2023-09-15 中国地质大学（武汉） 一种瞬变电磁仪接收机
US11125590B2 (en) 2019-05-07 2021-09-21 Allegro Microsystems, Llc System and method for vibration detection with direction change response immunity using a magnetic field sensor
US11029176B2 (en) 2019-05-07 2021-06-08 Allegro Microsystems, Llc System and method for vibration detection with no loss of position information using a magnetic field sensor
CN110255118B (zh) * 2019-06-04 2021-01-05 仵军红 一种具有筛选功能的食品检测传送装置
CN112179980B (zh) * 2020-10-27 2022-06-14 电子科技大学 一种基于阵列涡流的旋压筒体表面缺陷在线自动识别方法

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Also Published As

Publication number Publication date
EP0379804A2 (fr) 1990-08-01
EP0379804A3 (fr) 1991-03-06
CA2005549C (fr) 2000-04-25
DE68915527T2 (de) 1994-10-20
AU612533B2 (en) 1991-07-11
CA2005549A1 (fr) 1990-06-29
JPH02298852A (ja) 1990-12-11
JP2834813B2 (ja) 1998-12-14
NO302634B1 (no) 1998-03-30
AU4736489A (en) 1990-07-05
DE68915527D1 (de) 1994-06-30
US4906928A (en) 1990-03-06
NO895276L (no) 1990-07-02
NO895276D0 (no) 1989-12-27
EP0379804B1 (fr) 1994-05-25

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20031221

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)