OPTOMECHANICAL PRESSURE METER Russian patent published in 2000 - IPC

FIELD: measurement technology. SUBSTANCE: invention is related to devices used to measure average value and pulsation of pressure of liquids and gases. It can find use in hydrophysics and underwater acoustics. Meter has case housing optical and inertial systems. Optical system is based on Michelson interferometer in which mobile reflector presents membrane that is at the same time one of sides of case and immobile reflector includes two plane-parallel mirrors positioned on piezoceramic bases at angle of 90 degrees one relative to another. Technical result of invention lies in increased accuracy of measurement of low-frequency and extralow-frequency pulsation of pressure thanks to reduced sluggishness of measurement system and raised stability of interference picture and in enhanced sensitivity of optical system. EFFECT: increased accuracy of measurement. 1 cl, 1 dwg