ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
We developed a system for localizing orthogonal triplets of small magnetic dipoles with an array of magnetometers. These triplets can be used to measure, in quasi-real time, the position of an object. This system is particularly useful when used with superconducting biomagnetic multichannel detectors. We present here a complete numerical simulation of the system performances and the first experimental tests with a biomagnetic detector (an array of 37 superconducting magnetometers). This system can be operated at frequencies outside the range of interest for biomagnetic measurements (that is typically 10−2–103 Hz). It features an accuracy of ±0.3 cm driving the triplet at a field intensity ≈10−12 T. The speed of the algorithm allows for quasi-real-time operation (t ∼ 10−1 s).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1143228
