MICROCOMPUTERIZED RECORDER OF ELECTROMAGNETIC SEISMIC PULSES

This microcomputerized recorder may be used for seismolgic prediction, monitoring electromagnetic pulse anomalism as pre-seismic short term precursor, ultra-low-frequency receiving it and digital recording, as well as the prediction of breakage of coal mining roof. Used magnetic-induction sensor has...

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Bibliographic Details
Main Authors HE XIAJUN, WEI YIKUI, ZHAO XUEPU ET AL
Format Patent
LanguageEnglish
Published 17.06.1992
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DETECTING MASSES OR OBJECTS
ELECTRICITY
GENERATION
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
SYSTEMS FOR STORING ELECTRIC ENERGY
TESTING
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Summary:This microcomputerized recorder may be used for seismolgic prediction, monitoring electromagnetic pulse anomalism as pre-seismic short term precursor, ultra-low-frequency receiving it and digital recording, as well as the prediction of breakage of coal mining roof. Used magnetic-induction sensor has a frequency range of 0.01H2-2KH2. A single-chip microcomputer is used to control digital display and to continuously record the variation of underground electromagnetic pulses. A pre-converter can convert receiced analog signals into digital ones and the external interference may be eliminated by regulation of reference voltage. An photoelectric isolation is used between the pre-converter and main machine to eliminat the interference of ground power-supply and main machine to the pre-converter.
Bibliography:Application Number: CN1990109534