About Us

KEY WORDS

Electromagnetic field, magnetic field, identification of objects, magnetometry.

ABSTRACT

Changes in the presence, location and shape of even small magnetized and paramagnetic objects can be monitored both in the Earth’s magnetic field as well as in the local magnetic field. The basic condition that has to be met when employing magnetometry for such tasks is the magnetic contrast of single objects against their surroundings. The paper shows the possibility of identifying cyclic and acyclic movements in the area of approximately 6 x 6 x 4 m (standard office space). Triaxial magnetometer with a sensitivity of 2 nT and range 0-250 Hz was used for measurements. The evaluation was carried out in time and frequency area. The objective of the experiment was to monitor interactions between sources of magnetic field in the defined area. The relation between the distance and the induction of selected objects was monitored. The monitored area was not magnetically shielded and therefore the potential influence of other sources outside the monitored space was also observed.

CITATION INFORMATION

Acta Mechanica Slovaca. Volume 17, Issue 2, Pages 44 – 52, ISSN 1335-2393

DOWNLOAD

  Identification of Objects by Magnetometry

REFERENCES

[1] LOHMANN, K. J. - SHAUN C. D. - DIDGE S. A. - LOHMANN C. M. F.: Regional Magnetic Fields as Navigational Markers for Sea Turtles, Science, Vol. 294, 2001.

[2] MADARÁS, J.: Prepólovanie Zeme: Hrozí čoskoro zánik civilizácie? [online] [accessed on 2012-05-15] available at:<http://www.equark.sk/index.php?cl=article&iid=1389>
[3] TIRPÁK, A.: Elektromagnetizmus, II. vydanie, IRIS, Bratislava, ISBN 978-80-89238-46-0.
[4] BUSCHOW, K. H. J.: Encyclopedia of materials : Science and technology. Elsevier. ISBN 0-08-043152-6.
[5] ELLIS Richard S., WANG Kongming: Limit theorems for maximum likelihood estimators in the Curie-Weiss-Potts model Original Research Article Stochastic Processes and their Applications, Volume 40, Issue 2, March 1992, str. 251-288
[6] VOJENČIAK, M.- ŠOUC, J.- GÖMÖRY, F.- SEILER, E.: Influence of DC Magnetic Field, on AC Loss of YBCO Coated Conductor with Ferromagnetic Substrate, Acta Physica Polonica A, Vol. 113, Issue 1, p.359.
[7] PRIGOGINE, I.: From Being To Becoming, 1980, Freeman, ISBN 0-7167-1107-9.
[8] HAKEN, H.: Advanced Synergetics: Instability Hierarchies of Self-Organizing Systems and Devices. New York: Springer-Verlag, 1993.
[9] ORAVEC, M.: Synergický efekt - nástroj komerčného zneužitia, CNP 2011, IOO Bohdaneč 2011.
[10] FISHBINE,B.: SQUID magnetometry, [online] [accessed on 2012-12-10] available at: http://www.lanl.gov/quarterly/q_spring03/magnetic_fields.shtml
[11] BLAŽEK, J.- JOZEK, P.- LIPOVSKÝ, P.: Analysis of the differential induction sensor on the basis of the results of the experiments - 2011. In: Acta Avionica. Roč. 13, č. 21 (2011), s. 30-36. - ISSN 1335-9479.
[12] HUDÁK, J. - BLAŽEK, J. - PRASLIČKA, D. - MIKITA, I. - LIPOVSKÝ, P. - GONDA, P.: Sensitivity of Vema-04.1 magnetometer. [etal.] - 2010. In: Journal of Electrical Engineering. Roč. 61, č. 7s (2010), s. 28-31. - ISSN 1335-3632. [13] Parameters of neodymium ball [online] [accessed on 2012-05-15] available at:

<http://www.supermagnete.de/eng/data_sheet_K-05-C.pdf>
[14] KOVÁČ, J.- KNEŽO, D.- IŽARÍKOVÁ, G.: The Model of Topological Relations-Relation Between Two Constructed Equipment. Acta Mechanica Slovaca 2/2011. ISSN 1335-2393.
[15] KAHANCOVÁ, E. - MARUŠINCOVÁ, K. - HUDÁK, R.: Quantification of low-frequency magnetic field at the magnetotherapeutic workplace, 2001. In: Acta Mechanica Slovaca. Roč. 5, č. 1 (2001), s. 79-82. - ISSN 1335-2393.

Latest Issue

ams 2 2016

Download

Guests Online

We have 44 guests and no members online