Noise in single-core gradiometers based on orthogonal fluxgate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00375901" target="_blank" >RIV/68407700:21230/24:00375901 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/JSEN.2024.3387101" target="_blank" >https://doi.org/10.1109/JSEN.2024.3387101</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JSEN.2024.3387101" target="_blank" >10.1109/JSEN.2024.3387101</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Noise in single-core gradiometers based on orthogonal fluxgate

Popis výsledku v původním jazyce

In the design of orthogonal fluxgate sensors, a common approach involves employing a pick-up coil of maximum length to enhance signal strength. Traditionally, gradiometers are implemented by utilizing two distinct sensors and calculating the gradient as the difference between their outputs. Alternatively, the use of two shorter coils on the same core is often avoided due to concerns that a shorter coil may yield a lower signal-to-noise ratio. Contrary to this conventional belief, this article demonstrates that a two-coil gradiometer can be a viable and effective solution. Specifically, we establish that opting for a 15 mm long coil over a 50 mm long coil results in only a marginal increment from 0.9 to 1.3 pT/ root Hz, a level deemed acceptable for numerous applications with proper design considerations. In addition, we elucidate the distribution of magnetic flux density along the magnetic core, highlighting its role in detecting rapidly decaying magnetic gradients even at considerable distances. Furthermore, we delve into the correlation of noise in multiple coils on the same core and provide insights into achieving independent measurements for each coil.

Název v anglickém jazyce

Noise in single-core gradiometers based on orthogonal fluxgate

Popis výsledku anglicky

In the design of orthogonal fluxgate sensors, a common approach involves employing a pick-up coil of maximum length to enhance signal strength. Traditionally, gradiometers are implemented by utilizing two distinct sensors and calculating the gradient as the difference between their outputs. Alternatively, the use of two shorter coils on the same core is often avoided due to concerns that a shorter coil may yield a lower signal-to-noise ratio. Contrary to this conventional belief, this article demonstrates that a two-coil gradiometer can be a viable and effective solution. Specifically, we establish that opting for a 15 mm long coil over a 50 mm long coil results in only a marginal increment from 0.9 to 1.3 pT/ root Hz, a level deemed acceptable for numerous applications with proper design considerations. In addition, we elucidate the distribution of magnetic flux density along the magnetic core, highlighting its role in detecting rapidly decaying magnetic gradients even at considerable distances. Furthermore, we delve into the correlation of noise in multiple coils on the same core and provide insights into achieving independent measurements for each coil.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Sensors Journal

ISSN

1530-437X

e-ISSN

1558-1748

Svazek periodika

24

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

22326-22335

Kód UT WoS článku

001273156700129

EID výsledku v databázi Scopus

2-s2.0-85195366820