METHOD AND DEVICE FOR MEASURING TIME OF SPREADING OF SIGNAL, IN PARTICULAR, OF ULTRASOUND SIGNAL Russian patent published in 2004 - IPC

FIELD: equipment for measuring time of ultrasound signals spreading.

SUBSTANCE: method for measuring time T_s of ultrasound signal spreading from one sensor to another consists of sending exciting signal IE_n to emitting sensor, containing n serial pulses with period T_e, by means of which radiation of ultrasound wave is initiated in direction of receiving sensor, which generates received signal at output of receiving sensor. At that moment measurement of intermediate spreading time T_int is started, as soon as excitation of emitting sensor starts, received signal SR_n at output of receiving sensor is determined and frequency of oscillations of receiving sensor is determined, measurement of T_int is stopped, at moment when i oscillation P_i is determined, time T_s of signal spreading is determined from formula T_int - i·T_e. Current method is realized by appropriate device, containing means for subtracting fixed time, means for determining I oscillation, comparator, meant for counting number of oscillations of received signal and determining i oscillation, and other electronic parts.

EFFECT: simplified method.

2 cl, 7 dwg