G - Physics – 01 – R
Patent
G - Physics
01
R
324/57
G01R 33/20 (2006.01) G01R 33/022 (2006.01) G01R 33/24 (2006.01) G01V 3/14 (2006.01)
Patent
CA 1226620
18 MAGNETOMETER CIRCUIT FOR MEASURING THE PERIOD OF BEAT FREQUENCY MAXIMA ABSTRACT A conventional magnetometer produces an output signal (10) which comprises a series of pulses (12, 14, 16). Each of these pulses has a beat frequency maximum. These pulses are input to a comparator (50) which makes a comparison to a threshold voltage V0 to produce a bi-level detected signal at a line (62). The detected signal is input to an integrator (52) which produces a series of pulses (78, 80, 82) corresponding respectively with the magnetometer output signal pulses (12, 14, 16). The two states of the detected signal corresponding to positive and negative integration. The time period for the positive integration is proportional to the beat frequency maximum time width period for the corresponding magnetometer output signal pulse. Thus the integrated pulses (78, 80, 82) have an amplitude which is a measure of the maxima time width periods for the corresponding magnetometer signal pulses.
475449
Dalton Murphy L. Jr.
Kirby Eades Gale Baker
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