NO751865L - - Google Patents

Info

Publication number: NO751865L
Authority: NO; Norway
Prior art keywords: pulse; period; signal; amplitude; gate
Prior art date: 1974-05-28

Application number

NO751865A

Other languages

English (en)

Norwegian (no)

Inventor

R S Enabit

Original Assignee

Goodyear Tire & Rubber

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.)

1974-05-28

Filing date

1975-05-27

Publication date

1975-12-01

1975-05-27 Application filed by Goodyear Tire & Rubber filed Critical Goodyear Tire & Rubber

1975-12-01 Publication of NO751865L publication Critical patent/NO751865L/no

Links

238000001514 detection method Methods 0.000 claims description 26
239000000463 material Substances 0.000 claims description 15
238000000034 method Methods 0.000 claims description 12
230000001143 conditioned effect Effects 0.000 claims description 8
230000004044 response Effects 0.000 claims description 4
230000004913 activation Effects 0.000 claims description 3
230000006978 adaptation Effects 0.000 claims description 2
230000007704 transition Effects 0.000 claims description 2
230000003111 delayed effect Effects 0.000 claims 3
230000004069 differentiation Effects 0.000 claims 2
230000008878 coupling Effects 0.000 claims 1
238000010168 coupling process Methods 0.000 claims 1
238000005859 coupling reaction Methods 0.000 claims 1
239000002184 metal Substances 0.000 description 18
239000003990 capacitor Substances 0.000 description 4
230000000694 effects Effects 0.000 description 3
230000005672 electromagnetic field Effects 0.000 description 3
238000000926 separation method Methods 0.000 description 3
230000008859 change Effects 0.000 description 2
230000003750 conditioning effect Effects 0.000 description 2
238000010586 diagram Methods 0.000 description 2
230000007613 environmental effect Effects 0.000 description 2
230000010354 integration Effects 0.000 description 2
230000007774 longterm Effects 0.000 description 2
239000007769 metal material Substances 0.000 description 2
238000007792 addition Methods 0.000 description 1
230000002238 attenuated effect Effects 0.000 description 1
230000005540 biological transmission Effects 0.000 description 1
239000004020 conductor Substances 0.000 description 1
238000011109 contamination Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
239000012535 impurity Substances 0.000 description 1
238000011835 investigation Methods 0.000 description 1
239000002923 metal particle Substances 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
238000005457 optimization Methods 0.000 description 1
230000035699 permeability Effects 0.000 description 1
230000008569 process Effects 0.000 description 1
230000001052 transient effect Effects 0.000 description 1
230000000007 visual effect Effects 0.000 description 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
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
- G01N27/906—Compensating for velocity

Landscapes

Life Sciences & Earth Sciences (AREA)
Physics & Mathematics (AREA)
Chemical & Material Sciences (AREA)
General Physics & Mathematics (AREA)
Biochemistry (AREA)
Immunology (AREA)
Pathology (AREA)
General Health & Medical Sciences (AREA)
Remote Sensing (AREA)
Engineering & Computer Science (AREA)
Analytical Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Electrochemistry (AREA)
Health & Medical Sciences (AREA)
Electromagnetism (AREA)
Geophysics (AREA)
General Life Sciences & Earth Sciences (AREA)
Environmental & Geological Engineering (AREA)
Geology (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 Ultrasonic Waves (AREA)

NO751865A 1974-05-28 1975-05-27 NO751865L (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/473,643 US3949293A (en)	1974-05-28	1974-05-28	Apparatus and method for detecting a moving metal mass including means to discriminate signals having a particular period

Publications (1)

Publication Number	Publication Date
NO751865L true NO751865L (fr)	1975-12-01

Family

ID=23880398

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO751865A NO751865L (fr)	1974-05-28	1975-05-27

Country Status (19)

Country	Link
US (1)	US3949293A (fr)
JP (1)	JPS517954A (fr)
AR (1)	AR204664A1 (fr)
AU (1)	AU498275B2 (fr)
BE (1)	BE829255A (fr)
BR (1)	BR7503216A (fr)
CA (1)	CA1060970A (fr)
DE (1)	DE2523677A1 (fr)
DK (1)	DK233975A (fr)
ES (1)	ES437399A1 (fr)
FR (1)	FR2273288A1 (fr)
GB (1)	GB1505186A (fr)
IT (1)	IT1038533B (fr)
LU (1)	LU72552A1 (fr)
NL (1)	NL7506305A (fr)
NO (1)	NO751865L (fr)
SE (1)	SE401954B (fr)
TR (1)	TR19739A (fr)
ZA (1)	ZA752757B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2412081A1 (fr) *	1977-12-19	1979-07-13	Fadico	Dispositif de detection de la presence d'une piece mecanique, muni d'organes assurant la securite du fonctionnement vis-a-vis de defauts d'isolement dans le circuit du capteur
US4193028A (en) *	1978-05-05	1980-03-11	Honeywell Inc.	Eddy current instrumentation circuitry for distinguishing flaw signals from spurious noise signals
GB2136580B (en) *	1983-03-16	1987-11-18	Thyssen Industrie	Method and apparatus for determining the distance from a conductor
JPH0518715Y2 (fr) *	1987-12-15	1993-05-18

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2577827A (en) *	1945-10-30	1951-12-11	Charles B Tompkins	Pulse recognition device
US2648766A (en) *	1950-04-19	1953-08-11	Rca Corp	Pulse width discriminator
US3065412A (en) *	1958-12-23	1962-11-20	Union Carbide Corp	Metal detector
US3523253A (en) *	1966-04-15	1970-08-04	Electronic Memories & Magnetic	Coupling network
US3609563A (en) *	1968-11-12	1971-09-28	Coditron Corp	Frequency detector
US3706027A (en) *	1971-07-13	1972-12-12	Karl R Grice Jr	Materials counting system utilizing permanent magnets and their associated fields

1974
- 1974-05-28 US US05/473,643 patent/US3949293A/en not_active Expired - Lifetime
1975
- 1975-01-01 AR AR258711A patent/AR204664A1/es active
- 1975-04-29 CA CA225,996A patent/CA1060970A/fr not_active Expired
- 1975-04-29 ZA ZA00752757A patent/ZA752757B/xx unknown
- 1975-05-02 GB GB18412/75A patent/GB1505186A/en not_active Expired
- 1975-05-02 ES ES437399A patent/ES437399A1/es not_active Expired
- 1975-05-02 AU AU80771/75A patent/AU498275B2/en not_active Expired
- 1975-05-15 FR FR7515240A patent/FR2273288A1/fr not_active Withdrawn
- 1975-05-16 TR TR19739A patent/TR19739A/xx unknown
- 1975-05-20 BE BE156503A patent/BE829255A/fr unknown
- 1975-05-22 BR BR4118/75D patent/BR7503216A/pt unknown
- 1975-05-22 LU LU72552A patent/LU72552A1/xx unknown
- 1975-05-23 SE SE7505919A patent/SE401954B/xx unknown
- 1975-05-26 DE DE19752523677 patent/DE2523677A1/de not_active Withdrawn
- 1975-05-27 DK DK233975A patent/DK233975A/da unknown
- 1975-05-27 JP JP50063400A patent/JPS517954A/ja active Pending
- 1975-05-27 NO NO751865A patent/NO751865L/no unknown
- 1975-05-27 IT IT23763/75A patent/IT1038533B/it active
- 1975-05-28 NL NL7506305A patent/NL7506305A/xx not_active Application Discontinuation

Also Published As

Publication number	Publication date
SE401954B (sv)	1978-06-05
IT1038533B (it)	1979-11-30
JPS517954A (fr)	1976-01-22
SE7505919L (sv)	1975-12-01
BR7503216A (pt)	1976-04-20
AU8077175A (en)	1976-11-04
AR204664A1 (es)	1976-02-20
ZA752757B (en)	1976-04-28
LU72552A1 (fr)	1975-10-08
TR19739A (tr)	1979-10-25
CA1060970A (fr)	1979-08-21
BE829255A (fr)	1975-09-15
GB1505186A (en)	1978-03-30
FR2273288A1 (fr)	1975-12-26
AU498275B2 (en)	1979-03-01
ES437399A1 (es)	1977-01-16
NL7506305A (nl)	1975-12-02
US3949293A (en)	1976-04-06
DK233975A (da)	1975-11-29
DE2523677A1 (de)	1975-12-11

Publication	Publication Date	Title
US5315243A (en)	1994-05-24	Detection and discrimination between ferromagnetic and non-ferromagnetic conductive particles in a fluid
US3748576A (en)	1973-07-24	Detection of particle-inclusions in fluid flow utilizing a divided fluid path with a sensing coil about each path
SU657769A3 (ru)	1979-04-15	Устройство дл определени коэффициента средней длины волны
US5144231A (en)	1992-09-01	Eddy current detector for detecting an object with offset compensation
NO751865L (fr)	1975-12-01
US4275806A (en)	1981-06-30	Coin sorting machine
KR910005056A (ko)	1991-03-29	셀프-타이밍을 인정하는 채널
JPH04213190A (ja)	1992-08-04	アナログ信号解析方法及び電子回路
US4193028A (en)	1980-03-11	Eddy current instrumentation circuitry for distinguishing flaw signals from spurious noise signals
US4678948A (en)	1987-07-07	Measuring device error monitoring system
GB1429620A (en)	1976-03-24	Device for checking elongated metallic test material for defects
US4692692A (en)	1987-09-08	Electronic apparatus for detecting stray variations in an electrical voltage as a function of time
US2901609A (en)	1959-08-25	Differentiator
RU2098848C1 (ru)	1997-12-10	Металлообнаружитель
CA2117871C (fr)	1997-09-23	Detection des particules presentes dans un fluide
KR880011567A (ko)	1988-10-29	엔진의 흡기량 측정장치
RU2190866C2 (ru)	2002-10-10	Металлообнаружитель
KR930011725B1 (ko)	1993-12-18	주화 선별장치
SU792193A1 (ru)	1980-12-30	Металлоискатель
JPH0712953A (ja)	1995-01-17	金属検出装置
SU1117559A1 (ru)	1984-10-07	Вихретоковый металлоискатель
JPH0428059Y2 (fr)	1992-07-07
SU792192A1 (ru)	1980-12-30	Металлоискатель
SU981918A1 (ru)	1982-12-15	Металлоискатель
SU1394146A1 (ru)	1988-05-07	Устройство дл обнаружени движущегос объекта