Optical fiber type wind speed detection device

Abstract

The invention discloses an optical fiber type wind speed detection device, and belongs to the technical field of optical fiber sensing. A Venturi tube is fixed between universal plate box bodies; a first rotating shaft is connected with the universal plate box bodies through bearings; a wind wheel and a ratchet wheel are connected with the first rotating shaft through flat keys; the fixed end of acantilever beam is fixed on the universal plate box bodies through a support; a force transmission cylinder provided with a through hole is fixed on the universal plate box bodies; a force transmission pin is positioned in the through hole of the force transmission cylinder; the two ends of the force transmission pin are in contact with ratchet teeth of the ratchet wheel and the free end of the cantilever beam correspondingly; a second rotating shaft fixed on a rotating disc is connected with the universal plate box bodies through bearings; an optical fiber provided with a light leakage areais pasted on the cantilever beam through flexible glue; the two ends of the optical fiber are connected with a light source and a light receiver correspondingly; the light source is electrically connected with a light source driving circuit; and the light receiver is electrically connected with a signal processing system. According to the device, no electronic device is arranged on a detection site, and the wind speed can be measured in a strong electromagnetic interference and flammable and combustible environment.

Description

technical field [0001] The invention relates to a wind speed detection device, in particular to an optical fiber wind speed detection device. Background technique [0002] Anemometers traditionally used to detect wind speed are mainly divided into rotary anemometers and ultrasonic anemometers according to their working principles. However, most rotary anemometers measure wind speed directly or indirectly through the correspondence between electrical signals and wind speed, which cannot be applied to wind speed detection in flammable and explosive environments. Ultrasonic anemometers are sensitive to external electromagnetic interference and cannot be applied to wind speed detection in environments with strong electromagnetic interference. The most important advantage of optical fiber is that it has the characteristics of anti-magnetic, explosion-proof and anti-electromagnetic interference. Therefore, the use of optical fiber sensing technology for wind speed detection can o...

AI Technical Summary

Problems solved by technology

However, most rotary anemometers measure wind speed directly or indirectly through the correspondence between electrical signals and wind speed, which cannot be applied to wind speed detection in flammable and explosive environments.

Ultrasonic anemometers are sensitive to external electromagnetic interference and cannot be used for wind speed detection in environments with strong electromagnetic interference

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