Fiber bragg grating wind speed and direction sensor

Abstract

The invention relates to a fiber bragg grating wind speed and direction sensor. The fiber bragg grating wind speed and direction sensor comprises a thin-walled cylinder and a packaging body, the upperpart at the middle of the thin-walled cylinder is hollowed out, a third constant strength cantilever beam is installed in the area, and fiber bragg grating sensors are symmetrically pasted to the central axes at the upper surface and lower surface of the third constant strength cantilever beam respectively. The sensor also includes a direction cam, a cylindrical cam and a push rod that are arranged in the packaging body, the upper part and lower part of one side in the packaging body are respectively connected to a horizontal constant strength cantilever beam, a vertical constant strength cantilever beam is hung and installed to the top side of the packaging body, fiber bragg grating sensors are pasted to both faces of the constant strength cantilever beams, and permanent magnets are arranged at the free ends of the constant strength cantilever beams so as to induce changes of magnetic force borne by the permanent magnets on the constant strength cantilever beams. The fiber bragg grating wind speed and direction sensor is light in structure and not easily damaged, and achieves real-time on-line monitoring of the wind speed and direction by utilizing the small size, electromagneticinterference resistance, good electrical insulation performance, large transportation capacity and other physical attributes of the fiber bragg grating.

Description

Technical field [0001] The application relates to a fiber grating wind speed and direction sensor, which is suitable for the technical field of wind speed and direction detection. Background technique [0002] Wind speed and direction measurement technology has a wide range of applications: in the agricultural field, the size of the wind speed has an important impact on the harvest of farmland; in the field of meteorology, it provides accurate wind direction change data for the marine meteorological warning system. The wind speed and direction are used to predict the coverage of typhoons and "operations". "One of the important parameters of the trajectory; in the field of clean energy, the country attaches great importance to the development and utilization of wind energy. Commonly used wind speed and direction measurement methods are: capacitive force sensor, ultrasonic force sensor, piezoresistive force sensor. The above-mentioned sensors all require active power supply, and t...

AI Technical Summary

Problems solved by technology

This method relies on the mutual collision between the parts, which will lead to damage to the parts and inaccurate accuracy after long-term use, and does not take into account the influence of temperature on the measuring equipment, so the accuracy is not high

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