Torque optical fiber sensor

Abstract

The invention relates to a novel torque optical fiber sensor and belongs to the test technology and optical fiber sensor field. The invention adopts a long-period optical fiber grating or a fused-tapered optical fiber as a measuring element; when the long-period optical fiber grating or the fused-tapered optical fiber is acted by the torque, the period of the long-period optical fiber grating or the optical intensity or the spectrum of the fused-tapered optical fiber can be changed, thereby measuring the torque value. The sensor is formed by a guiding optical fiber, a torsion rod (2), a torsion rod (3), a long-period optical fiber grating or a fused-tapered optical fiber (5), and a spring (4), wherein, two torsion rods (2) and ( 3) are connected by the spring (4) and can relatively be rotated. The long-period optical fiber grating or the fused-tapered optical fiber which are used for sensing are respectively fixed on the torsion rod (2) and the torsion rod (3). In addition, one torsion rod of the torque sensor is provided with a magnet which can form an optical fiber revolution sensor based on the torque measurement with a opposite polarity magnet which is arranged on a rotary mechanism.

Description

technical field [0001] The invention belongs to the field of testing technology and optical fiber sensors, and in particular relates to the design of a novel torque optical fiber sensor and a scheme for realizing the design principle. Background technique [0002] In the mechanical transmission system, torque is one of the most typical mechanical quantities that reflect the performance of the production equipment system. Torque measurement and analysis are important means to ensure the safe and normal operation of various production and auxiliary equipment, save energy, and improve system efficiency. Improving the accuracy of torque measurement, the real-time performance of torque monitoring and control, and the reliability of torque abnormality analysis is an important means to reduce accidents and make production go on normally. [0003] With the advancement of science and technology and the development of production, torque measurement technology has broad application pro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of troublesome, complicated and low-precision testing in the traditional measuring method, and to invent a new optical fiber torque measuring method and new sensor, so that the measuring operation is simple, the cost is low, the precision is improved, and the measuring range is expanded. And anti-electromagnetic interference

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