Topic
Acoustic interferometer
About: Acoustic interferometer is a research topic. Over the lifetime, 1493 publications have been published within this topic receiving 19355 citations.
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Patent•
27 Jul 1995
TL;DR: In this paper, the authors proposed a method to detect the existence of liquid within a container and the quantity of liquid by transmitting ultrasonic waves into the container, and receiving the reflected waves.
Abstract: PROBLEM TO BE SOLVED: To detect the existence of the liquid within a container and the quantity of liquid by transmitting ultrasonic waves into the container, and receiving the reflected waves. SOLUTION: A detector body 8 is connected to a transducer 2. The ultrasonic waves transmitted from the transducer 2 become multiple reflected waves E1, being reflected from the boundary face between the container 1 and water W, and also become multiple reflected waves E2 , being reflected from the boundary face (water surface) between the water W and the air. Here, it is recognized that the multiple reflected waves E2 are from wafer surface by detecting the multiple reflected waves E2 rippling in the direction of amplitude and the direction of time axis, fixing eyes upon that ripples exist at all times on the water surface even though inconsiderable. At the same time, the quantity of water is obtained by operation, based on the time from the transducer 2 sending ultrasonic waves to receiving the multiple reflected waves E2 . Furthermore, even in the case that a small quantity of water exists in the container, the security of accuracy in detection on such a level that there is no hindrance in practical use is enabled.
6 citations
TL;DR: In this article, the A, S0, and A1 circumferential waves are investigated and graphical interpretations are used to explain the formation mechanism of these waves and the acoustic scattering in monostatic and bistatic configurations.
6 citations
Patent•
09 Dec 2005
TL;DR: In this article, a displacement measuring interferometer system and method for measuring the distance between two known points is disclosed, which uses a scanning tunable laser to accurately map out a fringe such that significant improvement in accuracy can be achieved by use of a scan the wavelengths and determine the fringe.
Abstract: A displacement measuring interferometer system and method for measuring the distance between two known points is disclosed. An interferometer is configured to provide a reference reflection of a reference point and a measurement reflection of a measurement point. A tunable laser is used to scan in wavelength into the interferometer to detect interferometer characteristics to measure the distance between the reference point and the measurement point from the interferometer characteristics. The invention describes a displacement measuring interferometer which uses a scanning tunable laser to accurately map out a fringe such that significant improvement in accuracy can be achieved by use of a tunable laser to scan the wavelengths and determine the fringe.
5 citations
01 Jan 1980
5 citations
TL;DR: An omnidirectional hydrophone using particles suspended in a liquid acoustically coupled to a conducting environment for detecting acoustic waves by providing scattering of internally generated electromagnetic radiation from particles driven by the acoustic waves is described in this paper.
Abstract: An omnidirectional hydrophone using particles suspended in a liquid acoustically coupled to a conducting environment for detecting acoustic waves by providing scattering of internally generated electromagnetic radiation from particles driven by the acoustic waves.
5 citations