Sensing apparatus having fluxgate and control method thereof

Details Sensing apparatus having fluxgate and control method thereof Sensing apparatus having fluxgate and control method thereof

2006-10-17

2006-10-17

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

Reexamination Certificate

active

07123006

ABSTRACT:
In a sensing apparatus, and a control method of a sensing apparatus, the sensing apparatus includes a fluxgate including a driving coil for exciting a magnetic substance core with a current, first and second current amplifiers for applying the current to first and second ends of the driving coil, a pulse generator for generating a pulse to turn on/off the first and second current amplifiers, and a pulse controller for outputting a control signal allowing the pulse to be applied to the first and second current amplifiers, the pulse controller outputting the control signal at a start of a sensing cycle, the fluxgate generating an analog signal due to the excited magnetic substance, and an A/D converter for converting the analog signal from the fluxgate into a digital signal, wherein the pulse controller stops outputting the control signal when the A/D converter outputs the digital signal to the pulse controller.

REFERENCES:
patent: 4622843 (1986-11-01), Hormel
patent: 5223821 (1993-06-01), Poe et al.
patent: 5333110 (1994-07-01), Al-Attar
patent: 5376245 (1994-12-01), McLeod
patent: 5744956 (1998-04-01), Hawks
patent: 5764052 (1998-06-01), Renger
patent: 6282803 (2001-09-01), Dunne

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