Multichannel flux measuring apparatus having function for compen

Details Multichannel flux measuring apparatus having function for compen Multichannel flux measuring apparatus having function for compen

1995-07-17

1997-09-16

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetometers

505846, 327527, G01R 33035, G01R 3302

Patent

active

056684720

ABSTRACT:
Flux of magnetic field generated from an object P of magnetic measurement, which links with the pick-up coils of the fluxmeters, where the flux is converted into electrical signals by each of the SQUID chips driven by the FLL circuits. The electrical signals are sent to the data collection unit via the signal processing circuit. In the data collection unit, the electrical signals are converted into digital data by the A/D converter. The converted digital data are recorded on a hard disk or a magnet-optical disk or the like, of the data recording section. The digital data recorded on the data recording medium are compensated with use of a crosstalk compensation matrix so as to remove the interference due to crosstalk for each channel, by the crosstalk compensation section. The compensated data are displayed directly on the display in the form of a magnetic field distribution or time waveform, and sent to the data analysis section. The data sent to the data analysis section are subjected to a process for obtaining a current source distribution of the living body or the like, and then displayed on the display.

REFERENCES:
patent: 4761611 (1988-08-01), Hoenig
patent: 4825162 (1989-04-01), Roemer et al.
patent: 5038104 (1991-08-01), Wikswo, Jr. et al.
patent: 5319307 (1994-06-01), Simmonds
patent: 5326986 (1994-07-01), Miller, Jr. et al.
patent: 5453690 (1995-09-01), Kruger et al.
Clarke, Principles and Applications of SQUIDs, Proceedings of the IEEE, vol. 77, No. 8, Aug. 1989, pp. 1208-1223.

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