THREE-COMPONENT DETECTOR OF ACOUSTIC VIBRATIONS Russian patent published in 1999 - IPC

FIELD: registration of elastic waves in infrasonic region of frequencies, registration of vibrations propagating in solid, liquid and gaseous media, specifically, seismic prospecting, meteorology, flaw detection in solids. SUBSTANCE: detector of acoustic vibrations is manufactured in the form of base, three converters of same type positioned on base at angle of 70-110 degrees with reference to each other and connected with the aid of common connector to registration unit. Converter has hollow shell which butts are closed with elastic membranes. Internal space of hollow shell is divided into two compartments connected with duct. Duct houses two perforated measurement electrodes and two perforated counter electrodes that embrace measurement electrodes. Electrodes and counter electrodes are placed in duct at angle of 70-110 degrees. EFFECT: design of small-sized high-sensitivity detector of acoustic vibrations capable of registration of waves propagating in infrasonic range of frequencies with low level of own noises and high sensitivity irrespective of atmospheric effects and possibility of its usage practically under any static tilts when mounted in any spatial orientation. 4 cl, 3 dwg