DEVICE TO MEASURE INFRASONIC MEDIUM OSCILLATIONS Russian patent published in 2013 - IPC G01V1/00 

FIELD: measurement equipment.

SUBSTANCE: device comprises serially connected a sensitive element (2), a sensor of sensitive element displacement (3), a band amplifier (4) and a demodulator (5) connected to an analogue input (6) of the device. A generator (7) is connected to the sensor of sensitive element displacement (3) and the demodulator (5). The sensitive element (2) is connected to the environment and the medium inside a body (1). The device comprises serially connected an ADC (8), a microprocessor (9) with a digital port (10), a DAC (11), a switch (12), a summator (13), an amplifier (14) and a converter (15) of an electric signal into mechanical oscillations connected with the sensitive element. A filter (16) is connected to the demodulator (5) and the summator (13). The inlet of the ADC (8) is connected to the demodulator (5), and the switch (12) with the control input is connected to the microprocessor (9).

EFFECT: increased accuracy of measurement.

2 cl, 2 dwg