Fiber Optic Angle Sensor

Abstract

The invention provides an optical fiber angle sensor, the sensor includes a frame-shaped support, a light-entrance coil, a light-exit coil, a shaft seat, an outer column, a rotating shaft, an incident buffer section, an exit buffer section, a solid fiber seat, a buffer sleeve, and a light-entrance section , incident joint, outgoing joint, light exit section, dial, light return section, observation window, hammer tip, inner column and pointer, frame bracket, shaft seat, rotating shaft, pointer, hammer tip and dial form a pointer angle indicator , the incident joint, the light section, the incident buffer section, the light entrance volume, the light return section, the light exit volume, the exit buffer section, the light exit section and the exit joint constitute the optical fiber angle sensing mechanism. The outgoing buffer sections are all bonded with soft glue to form a double-fiber structure. The cross-sectional view is a figure-eight shape. The strong modulation range is larger, the anti-electromagnetic interference ability is stronger, and the optical fiber transmission distance is longer.

Description

technical field [0001] The invention relates to an angle sensor, in particular to an optical fiber angle sensor, and belongs to the technical field of novel sensors. Background technique [0002] Optical fiber angle sensors have been widely used due to their long transmission distance and no interference from electromagnetic environments. The modulation forms mainly include intensity modulation, fiber grating and interference. At present, there are many patented technologies in optical fiber angle sensors. These Optical fiber sensors have their own characteristics, some have high sensitivity, some have complex structures, and some have high technical content. Although they can well adapt to the conversion of angle signals, most of them have high manufacturing costs, and some The conditions are relatively harsh. For example, some sensors have fiber end faces or grating gaps inside, which are easily corroded by moisture, dust, and mildew, and the sensitivity and accuracy of th...

AI Technical Summary

Problems solved by technology

[0002] Optical fiber angle sensors have been widely used due to their long transmission distance and no interference from electromagnetic environments. The modulation forms mainly include intensity modulation, fiber grating and interference. At present, there are many patented technologies in optical fiber angle sensors. These Optical fiber sensors have their own characteristics, some have high sensitivity, some have complex structures, and some have high technical content. Although they can well adapt to the conversion of angle signals, most of them have high manufacturing costs, and some The conditions are relatively harsh. For example, there are fiber end faces or grating gaps inside some sensors, which are easily corroded by moisture, dust and mildew, and the sensitivity and accuracy of the sensor will be affected.

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