| Autor: |
Nemoto, Toshio, Hashimoto, Yoshihiro, Sato, Sojun, Iitaka, Hiroshi |
| Předmět: |
|
| Zdroj: |
Electrical Engineering in Japan; 10/1/1998, Vol. 125 Issue 1, p1-8, 8p |
| Abstrakt: |
A simple-structured speed sensor in which a polarization-maintaining optical fiber is used as a Karman vortex generator and also as a vortex frequency sensor had earlier been proposed. For measuring ocean current velocity, a double-fin-type sensor mount was designed and investigated in detail experimentally. Although the experimental results showed its essential effectiveness, several problems were found. A conduit-type sensor mount has newly been proposed for solving these problems. A sensor for this mount has been constructed by using a circular pipe 16 mm in diameter. Experimental studies of the sensor show a wide range of agreement between detected frequencies versus measured flow speeds and the frequencies expected from the Roshko equation. The minimum detectable flow speed is 0.27 m/s. © 1998 Scripta Technica, Electr Eng Jpn, 125(1): 1–8, 1998 [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Plný text