DEVICE FOR CALIBRATING HYDROACOUSTIC RECEIVERS IN SMALL-VOLUME CHAMBER USING PARAMETRIC RESONANCE Russian patent published in 2024 - IPC G01L27/00 G01D21/00 

FIELD: measurement.

SUBSTANCE: invention relates to measuring equipment, namely to devices for measuring sensitivity of electromechanical transducers in a small-volume chamber based on parametric resonance of standing waves. Device for calibrating hydroacoustic receivers in a small-volume chamber using parametric resonance comprises a vertical-type small-volume chamber, made with possibility of placing in it a calibrated hydroacoustic receiver and its fixation on coordinate device, signal from which is transmitted through an amplifier and a low-pass filter to a voltmeter and an analogue-to-digital converter (ADC) connected to a PC. An accelerometer is additionally attached to the lower end of the small-volume chamber, which is connected to the ADC, which provides measurement of the oscillation frequency in the small-volume chamber.

EFFECT: increased volume of working space, reduced irregularity of hydroacoustic field and increased accuracy of oscillations formation in chamber of small volume.

1 cl, 1 dwg