Laser-doppler sensor system for speed and length measurements at moving surfaces
暂无分享,去创建一个
Laser-Doppler Velocimetry is a contact less method for measuring the speed and the path length of moving solid- state surfaces or of fluid streams. In the past the main application of this method was fluid mechanics. No other method was as suitable as Laser-Doppler Anemometry to measure the speed the streams at arbitrary positions. Therefore the market accepted the very high price of these systems. In the past for the measurement of solid-state surfaces mostly other methods with a more reasonable price were used. However from a pure technical point of view a contact less and precise method as Laser-Doppler Velocimetry is also very attractive for the measurement of solid-state surfaces. The method is suitable for nearly any type of technical surface. The measurement procedure does not damage the surfaces and no slippage occurs. These advantages will be become important also for standard applications, if the price of the LDV systems can compete with the price of other methods.
[1] G E Sommargren,et al. Laser Doppler velocimeter for velocity and length measurements of moving surfaces. , 1984, Applied optics.
[2] J. Leendertz,et al. Interferometric displacement measurement on scattering surfaces utilizing speckle effect , 1970 .
[3] V. Toal,et al. An interferometric linear in-plane position transducer , 1992 .