Fremgangsmåde ved måling med et laser-doppler-anemometer

The anemometer, which has at least two laser beams (9, 9'), which are generated by a laser light source (1) and jointly reach a region of a particle-containing flow (12) of a fluid, and whose scattered light, the frequency of which is shifted by the Doppler frequency because of the flow speed,...

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Bibliographische Detailangaben
Hauptverfasser:	REIM, GERHARD, TAUX, GUENTHER, DOPHEIDE, DIETRICH, PFEIFER, HANS-JOACHIM, FABER, MICHAEL
Format:	Patent
Sprache:	dan
Schlagworte:	INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	The anemometer, which has at least two laser beams (9, 9'), which are generated by a laser light source (1) and jointly reach a region of a particle-containing flow (12) of a fluid, and whose scattered light, the frequency of which is shifted by the Doppler frequency because of the flow speed, is measured, can be constructed in a very compact fashion and permits a high signal-to-noise ratio for the measuring signals when the laser beams (9, 9') consist of high- frequency pulses whose pulse repetition frequency is a multiple of the Doppler frequency.