CPC G01D 5/35358 (2013.01) [G01F 1/3209 (2013.01); G01F 1/661 (2013.01); G01H 9/004 (2013.01)] | 8 Claims |
1. A measurement system comprising:
an object provided in a fluid, and configured to generate a self-excited vibration by the fluid;
an optical fiber provided in the fluid, and configured to detect the vibration;
a light source configured to output light to the optical fiber;
a detector configured to acquire backscattered light that is generated from the light in the optical fiber and includes a pattern indicating the vibration in a vibration position on the optical fiber to which the vibration of the fluid is transmitted; and
a calculator configured to measure, from a pattern that is included in the backscattered light and indicates the vibration, a flow speed of the fluid in the vibration position,
wherein an object configured to generate a self-excited vibration by the fluid 1 s integrated as an optical fiber cable including the optical fiber configured to detect the vibration,
wherein the optical fiber configured to detect the vibration is disposed in a plurality of directions, and thus has a plurality of vibration detection sections at different angles formed with a flow of the fluid, and
wherein the calculator is configured to perform a comparison analysis on the vibration in each of the vibration detection sections, and to also detect a direction in which the fluid flows, using a comparison result.
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