Improvement of Independent Directional Magnetic Field Measurement Technique with Hall Sensors

2013 ◽  
Vol 811 ◽  
pp. 347-352 ◽  
Author(s):  
Athirot Mano ◽  
Narin Atiwongsangthong ◽  
Wisut Titiroongruang
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
Field Measurement ◽  
Density Measurement ◽  
Original System ◽  
Magnetic Flux Density ◽  
Magnetic Field Measurement ◽  
Hall Sensors ◽  
Flux Density Measurement

The independent directional magnetic field measurement is a new technique for magnetic flux density measurement with high accuracy. This technique can reduce the limitation in term of angle that magnetic flux lines interact with Hall sensors. However, the original system limits the uniformity and symmetry of magnetic field patterns, which can cause an error for measurement system. Therefore, the aim of this research is to present the method to increase measurement accuracy of system, by improve magnetic field uniformity which can be done by using electromagnet instead of permanent magnet. The system is also improved the mechanical circle motion by using stepping motor, it is used to rotate Hall sensors in magnetic field which is generated by electromagnet. The result from experiment has shown of this method that can reduce the error percentage as 5% compare with original system. This method is shown 0.99997 of coefficient of determination, which represents to accuracy in magnetic flux density measurement range 0-1350 Gauss.

A High Accuracy of Magnetometer by Using Independent Directional Magnetic Field Measurement Technique

2014 ◽  
Vol 565 ◽  
pp. 133-137
Author(s):  
Athirot Mano ◽  
Wisut Titiroongruang
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
Measurement Technique ◽  
Field Measurement ◽  
High Accuracy ◽  
Two Dimensions ◽  
Magnetic Flux Density ◽  
Magnetic Field Measurement ◽  
Hall Sensors

In a measurement of magnetic flux density with high accuracy by using Hall effect sensor must be considered position of Hall sensor, that perfect perpendicular with magnetic flux line for measurement. Only one Hall element can cause measuring error. Therefore, this paper presents an application of independent directional magnetic field measurement technique on two dimensions for high accuracy magnetometer. It is presented by using two Hall sensors locate perpendicular to each other and use the relation of the two voltage output signal from both Hall sensors to calculate constant Hall voltage and Magnetic flux density with high accuracy by using trigonometric function with Lab-View programming. And as the result of experiment, this technique can reduce the limitation in term of this angle in the range magnetic flux density can be measured 0-1800 gauss. A calibration curve of this system compare with standard Gauss meter shows the coefficient of determination (R2) equal to 1 and has the accuracy percentage as less than 0.5%.

scholarly journals Calibration of ac induction magnetometer

2018 ◽  
Vol 31 (4) ◽  
pp. 613-626 ◽  
Author(s):  
Branko Koprivica ◽  
Marko Sucurovic ◽  
Alenka Milovanovic
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Flux Density ◽  
Field Measurement ◽  
Large Diameter ◽  
Experimental Results ◽  
Magnetic Flux Density ◽  
Magnetic Field Measurement ◽  
Experimental Setup ◽  
Coil System

The aim of this paper is to describe a procedure and experimental setup for calibration of AC induction magnetometer. The paper presents an overview of the previous research and results of measurement of magnetic flux density inside large diameter multilayer solenoid. This solenoid is magnetising coil of the magnetometer. The paper also describes a system of five smaller coils of the magnetometer which are placed inside the large solenoid. Three small coils are pickup coils, accompanied with two compensation coils, of which one is an empty coil for magnetic field measurement. The experimental results of calibration of this coil system have been presented. A proper discussion of all the results presented has been also given in the paper.

Optimization of magnetic flux density measurement using multiple RF receiver coils and multi-echo in MREIT

2014 ◽  
Vol 59 (17) ◽  
pp. 4827-4844 ◽  
Author(s):  
Woo Chul Jeong ◽  
Munish Chauhan ◽  
Saurav Z K Sajib ◽  
Hyung Joong Kim ◽  
Igor Serša ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Density Measurement ◽  
Magnetic Flux Density ◽  
Rf Receiver ◽  
Flux Density Measurement

scholarly journals Magnetic Flux Density Measurement Platform for an Inductive Wireless Power Transmitter Coil Design

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 479
Author(s):  
Nataša Prosen ◽  
Miro Milanovič ◽  
Jure Domajnko
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Density Measurement ◽  
Wireless Power Transfer ◽  
Magnetic Flux Density ◽  
Power Transfer ◽  
Wireless Power ◽  
Search Coil ◽  
Transmitter Coil ◽  
Flux Density Measurement

This paper presents a platform developed for automated magnetic flux density measurement. The platform was designed to be used to measure the magnetic flux density of the transmitter/receiver coil of an inductive wireless power transfer system. The magnetic flux density of a transmitter was measured using a small, 3-axis search coil. The search coil was positioned in the 3D space above the transmitter coil using a 3D positioning mechanism and used to measure the magnetic flux density at a specific point. The data was then sent to a computer application to visualize the magnetic flux density. The measured magnetic field could be used in combination with electromagnetic field solvers to design and optimize transmitter coils for inductive wireless power transfer systems.

Magnetic flux density measurement through phase decomposition using non‐interleaved scan in MREIT

2015 ◽  
Vol 51 (12) ◽  
pp. 890-892
Author(s):  
Mun Bae Lee ◽  
Woo Chul Jeong ◽  
Saurav Z.K. Sajib ◽  
Hyung Joong Kim ◽  
Oh In Kwon
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
Density Measurement ◽  
Magnetic Flux Density ◽  
Phase Decomposition ◽  
Flux Density Measurement
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