Measurement arrangement for calibrating ultrasonic shock wave se

Details Measurement arrangement for calibrating ultrasonic shock wave se Measurement arrangement for calibrating ultrasonic shock wave se

1994-02-02

1996-02-06

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 4R, 73655, G01L 2700

Patent

active

054888530

ABSTRACT:
A lithotripsy measurement arrangement for calibrating ultrasonic shock wave sensors includes a generator 32 that is arranged at one end of a steepening tube 31 filled with a sound-carrying medium 3. Additionally, the arrangement includes an optical sensor head 34 which measures the measurement shock waves generated by generator 32 and steepened in steepening tube 31, and an analysis unit 10 optically connected via a fiber bundle 50 to sensor head 34. The end 5 of fiber bundle 50 is arranged in a measurement volume 4 inside sensor head 34 opposite a reflector region 22 of a film 2, to irradiate reflector region 22 with light and sense the reflected light. Film 2 is fastened to housing 13 of sensor head 34. Because of its low mass, film 2 follows the movement of the molecules of medium 3 when a measurement shock wave strikes an outer surface 20 of film 2. The corresponding excursion of film 2 is analyzed as a change in intensity of the light reflected back from reflector region 22 into fiber bundle 50.

REFERENCES:
patent: 2539418 (1951-01-01), Grogan
patent: 2762447 (1956-09-01), Cady
patent: 3215135 (1965-11-01), Franke
patent: 4588886 (1986-05-01), Snider
Fortschritte Der Akustik Daga '88, J. Staudenraus, W. Eisenmenger: Optisches Sondenhydrophon, pp. 467-470.
AMA-Seminar 28/29 Nov. 1988, Heidelberg, DE, J. Staudenraus, W. Eisenmenger, Universitat, Stuttgart, DE, pp. 67-72.

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