초록 ▼

Apparatus and method for detecting voids and particulates in a fluid within a containing vessel. A diffuse ultrasonic signal is coupled into the fluid by a first transducer and the portion of the ultrasonic signal transmitted through the fluid is detected by a second transducer. The received signal

Apparatus and method for detecting voids and particulates in a fluid within a containing vessel. A diffuse ultrasonic signal is coupled into the fluid by a first transducer and the portion of the ultrasonic signal transmitted through the fluid is detected by a second transducer. The received signal is analyzed by a processor to determine the void fraction of the fluid responsive to the attenuation of the received ultrasonic signal. In addition, voids and particulates are detected by evaluating the increase in side-band energy of the received signal.

대표청구항 ▼

Apparatus for detecting voids and particulates in a fluid within a containing means, the apparatus comprising: (a) first transducer means, coupled to a first location on the containing means, for transmitting a diffuse sound field of predetermined frequency into the fluid; (b) second transducer mean

Apparatus for detecting voids and particulates in a fluid within a containing means, the apparatus comprising: (a) first transducer means, coupled to a first location on the containing means, for transmitting a diffuse sound field of predetermined frequency into the fluid; (b) second transducer means, coupled to a second location on the containing means, for receiving a portion of the transmitted sound field and for generating a signal representative of the received portion of the sound field; and (c) signal processing means, coupled to the second transducer, for processing the second transducer signal to determine the presence of voids and particulates responsive to attenuation of the sound field transmitted through fluid.