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MAGNETOMETR Y Theoretical and experimental research

MAGNETOMETR Y Theoretical and experimental research. Baltag Octavian Ioan. Ligns of force of the geomagnetic field (Glatzmaier et Roberts, 1995). http://paleomag.uqar.ca/spip.php?article44. THEORETICAL AND APPLICATIVE RESARCH IN MAGNETOMETRY DIRECTIONS 1971 - 2001. MAGNETOMETRY

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MAGNETOMETR Y Theoretical and experimental research

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  1. MAGNETOMETRY Theoretical and experimental research Baltag Octavian Ioan Ligns of force of the geomagnetic field (Glatzmaier et Roberts, 1995). http://paleomag.uqar.ca/spip.php?article44

  2. THEORETICAL AND APPLICATIVE RESARCH IN MAGNETOMETRY DIRECTIONS 1971 - 2001 MAGNETOMETRY Space applications Marine applications and naval degaussing Terrestrial – special applications Laboratory – research & industry MAGNETIC DETECTION Magnetic naval and terrestrial mines Industrial applications -buried metallic bodies METROLOGY, TRANSDUCERS & SPECIAL DEVICES PROTECTION OF INTELECTUAL & INDUSTRIAL PROPERTY Patents Trademarks ELECTROMAGNETIC COMPATIBILITY • Special applications • Research & industry

  3. RESEARCH DOMAIN 2001 - 2008 HIGH RESOLUTION MAGNETOMETRY • Biomedical applications MICROWAVE RADIOMETRY • Microwave Thermografy – early detection of the breast cancer

  4. MAGNETOMETRY – NAVAL & MARINE APPLICATIONSMagnetic protection of ships

  5. MAGNETOMETRY – NAVAL & MARINE APPLICATIONS Methods and installations for magnetic protection of ships Triaxial magnetometer for SAD installations control of Cercetari in vederea realizarii unui magnetometru triaxial pentru comanda instalatiilor SAD pentru navele dragoare de mine

  6. Degaussing ship http://www.defencetalk.com/pictures/surface-ships/p11192-rsrb-36-degaussing-ship.html Degaussing current MAGNETOMETRY – NAVAL & MARINE APPLICATIONS Romanian degaussing ships: “AUTOMATICA” & “”

  7. MAGNETOMETRY – NAVAL & MARINE APPLICATIONS Dragging of the degaussing cable around of ship www.aetherometry.com/.../uft_degaussing.html http://www.fas.org/man/dod-101/navy/docs/swos/eng/62B-303.html

  8. Three channel magnetometer • Aplications: measuring of the vertical magnetic field • power: 220V/50Hz, 12V dc. • 3 channels galvanic separately • range: 80.000 nT • manual compensation: 60.000 nT • display: 3 1/2 digit • maximum immersion depth: 40m, Old URSS naval fluxgate

  9. MAGNETOMETRY - NAVAL & MARINE APPLICATIONS Counter – magnetic mine technology:Triaxial magnetometer for “SAD” systems protection of mine sweeper Characteristics and performance: • Magnetometric channel: 3 orthogonal fluxgates and 3 magnetometric channels • Fluxgates position: masthead • Measuring range: +/- 60.000 nT • Compensation range : +/- 50.000 nT • Coils intensity current: +/- 5 A • Amplidyne power: 1-7 kVA • Measuring error: 1% • Nonlinearity: < 1% • Degaussing coil: counteract  the  ship’s  longitudinal  permanent  and induced  magnetism • - athwart ship coil -  loops  in vertical  fore and aft  planes for compensate the permanent and  induced magnetism • longitudinal  coil - loops  in vertical  planes, counteract  the  ship’s  longitudinal  magnetism • quarterdeck coil • forecastle coilcounteract  the  ship’s  longitudinal  magnetism • main coil  made in  a  horizontal plane, encircles  the ship and counteract  the  ship’s  vertical  magnetism

  10. Laboratory of the "Mircea cel Batran" Naval Academy

  11. Old Romanian SAD “Antimagnetic protection ” System

  12. Amplidynes current amplifiers for deperming coils

  13. MAGNETOMETRY - NAVAL & MARINE APPLICATIONS Destination:Naval minewith multiparametric sensors • Research regarding a omnidirectional magneto static transducer • Magnetometric channel: • gradient channels: 3 orthogonal • magnetic field range: +/- 50.000 nT • sensibility on magnetic field: 0,1 mV / nT • sensibility on magnetic field gradient: 1 mV/ nT • magnetic field detection range: +/- 10.000 nT • gradient base: 2m • gradient magnetic field range: +/- 5.000 nT/m • duration of magnetic gradient pulse: 1s – 10s • astatic performance: 10-3

  14. MAGNETOMETRY - NAVAL & MARINE APPLICATIONS Marine polygon: magnetic signature Naval magnetometry polygon Multichannel magnetometer

  15. Multichannel magnetometric installation • measuring range: +/-20.000 nT +/-2.000 nT • field compensation: +/- 60.000 nT • error compensation: 5 nT • resolution: 1 nT • measurement error: 2% • channel: 24 • fluxgate cable length: 200 m • calibrations testing • galvanic separation between channels • analogic output:+/-5 V/50.000 nT/10 kΩ • temperature coefficient: 4 nT / °C Magnetometer channel – hybrid integrated circuits

  16. Computerized sub aquatic magnetic polygon 128 magnetometricchannels

  17. 128 magnetometric channels • measuring range: +/- 80.000 nT • analogical output: 8V / 80.000nT • galvanic separation • length of the cable: 1.200 m • magnetic field compensation: 16 step • magnetic field step: 5.000nT • A/D conversion: 16 bit • calibration step: 10.000 nT Computerized sub aquatic magnetic polygon

  18. Computerized sub aquatic magnetic polygon Magnetometers arrangements Magnetometer case

  19. Unitate dispusă în aeronavă Corp aerodinamic tractat Magnetometru cu efect Overhauser Cablu special de semnal şi tracţiune (70m) Troliu electric pentru lansarea şi recuperarea corpului tractat Unitatea de calcul şi afişare Magnetic Detecţia de anomalii magnetice în mediulmarin – Marea Neagra - produsul “SMM III” • detecţia unor variaţii a câmpului magnetic mai mici de 1 nT • acurateţe absolută a măsurării mai bună de 0,2 nT • să lucreze în condiţii de temperatură de la –40C la +60 C • un număr de măsurări pe secundă mai mare de 3

  20. Overhauser magnetometer • Caracteristici: • domeniu: 28.000 – 75.000 nT; • zgomot: 0,03 nT/Hz; • precizie: 0.5 nT; • ieşire digitală cu rata de 10 Hz; • senzor omnidirecţional. • Corpul tractat este realizat din materiale amagnetice compozite, fiind acoperit cu materiale de amortizare a şocurilor. Acesta este conectat cu cablul de tracţiune printr-o montură specială. • Corpul este tractat în mediu cu viteză de până la 10 Nd la distanţa maximă de 300 m. Adâncimea de lucru maximă este de 300 m. • Aceste echipamente sunt prevăzute cu mijloace de poziţionare de tip GPS de mare precizie pentru o localizare corectă şi eficientă a obiectelor căutate.

  21. CERCETARI DE DETECTIE MAGNETICA Cercetari privind detectia subacvaticaa unor corpuri metalice aflate pe fundul marii • O.Baltag, D. Costandache, Electromagnetic detection of the metallic hidden objects, International conference on “The detection of abandoned lands mines”, Edinburg, 1996 • O. Baltag, D. Costandache, Detectia electromagnetica a corpurilor metalice, Conferinta Nationala de Fizica Aplicata, Iasi 2004 • Electromagnetic detection of metallic objects, O. Baltag, D.Costandache, Bul. Inst Pol. Iasi, tom LII (LVI), fasc. 1-2, 2006, pp.

  22. Aici incepe inovarea . . . . .

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