TIME-OF-FLIGHT METHOD FOR DETERMINING THE SPEED OF SOUND IN LIQUID MEDIA AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC G01H5/00 

FIELD: metrology and measuring technology.

SUBSTANCE: invention relates to the field of metrology and measuring technology. A time-of-flight method for determining the speed of sound in liquid media, which consists in the fact that at a given temperature and pressure, using a transceiver piezoelectric transducer, sound pulses are directed to sound reflectors installed in parallel in a liquid medium at a distance L_t,P from one another and setting the measurement base, receive reflected sound pulses, by the time of passage of which the measurement bases L_t,P judge the speed of sound in a liquid medium. In this case, two sound reflectors installed in parallel are used, to create sound pulses, one transceiver piezoelectric transducer is used, installed in one of the sound reflectors in such a way that its radiating surface protrudes from the reflecting surface of the sound reflector by more than the wavelength of the sound pulse, then the time interval τ₁ is fixed from the beginning of the formation of sound pulses until the moment of receiving sound pulses reflected from another sound reflector, the time interval τ₂ is from the beginning of the formation of sound pulses to the moment of receiving sound pulses reflected sequentially from a sound reflector without a piezoelectric transducer, a sound reflector with a piezoelectric transducer, a sound reflector without a piezoelectric transducer, and the speed of sound is C determined from a mathematical expression .

EFFECT: improving the accuracy of measurements.

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