A fiber optic sensor
An optical fiber sensor and optical fiber technology, applied in the field of sensors, can solve the problems of complex structure of optical fiber sensor, inflexible design of sensing point position and density, etc., and achieve the effect of simple structure, flexible control, and large detection area
Active Publication Date: 2021-08-03
深圳市矽赫科技有限公司
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Problems solved by technology
[0004] The present invention provides an optical fiber sensor, aiming to solve the problem that the existing optical fiber sensor has a complicated structure, and the position and density of sensing points cannot be flexibly designed
Method used
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[0024] The present application will be further described in conjunction with the accompanying drawings in conjunction with the accompanying drawings.
[0025] The fiber optic sensor provided in this embodiment, such as figure 1 As shown, including the optical fiber 1, both ends of the optical fiber 1 are respectively provided with a first joint and a second joint, and the first joint is used to couppen with the light source, and the second joint is used to couple with the light receiver. Wherein, the first joint and the second joint may be an FC joint, a SC connector, an LC connector or a SMA connector. The optical fiber 1 intermediate portion forms a sensing region 10, and the optical fiber 1 includes a sensing section 11 and a lead segment 12, a sensing section 11 intersecting.
[0026] like figure 2 As shown, the sensing section 11 is returned to the cross-forming unit coil, and each unit coil is formed, and the sensing segment 11 is repeatedly wound to form a plurality of unit...
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Abstract
The present application discloses an optical fiber sensor, which includes: an optical fiber with one end used to couple with a light source and the other end used to couple with an optical receiver. winding. In the optical fiber sensor disclosed in the present invention, the optical fibers in the detection area intersect each other to form multiple intersections. When the detection area is under pressure, the optical fibers at the intersections will undergo local elastic deformation. Using the principle of optical fiber microbend loss, the detection light receiver receives The external pressure can be detected by the change of the received light intensity. The sensor has a simple structure and a large detection area; by changing the position, density and / or the angle between the two sections of optical fibers where the intersection is located, the sensor can Flexible control of sensor sensitivity.
Description
Technical field [0001] The present application relates to the field of sensors, and more particularly to a fiber optic sensor. Background technique [0002] A fiber optic sensor is a sensor that converts a state of the subject to a measured optical signal. The fiber optic sensor has a wide range of applications, which involves all important areas of national economy and national defense and people's daily life, especially in harsh environments. The working principle of the fiber optic sensor is to send the light beam incident in the light source into the modulator, the interaction of the parameters in the modulator, so that the optical properties of the light, the intensity, wavelength, frequency, phase, polarization state, etc. Changes, becomes the modulated optical signal, and then the optical fiber is fed into the optoelectronic device, and the measured parameter is obtained after the demodulator. [0003] The detection of fine vibration can be achieved by using the microflash...
Claims
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IPC IPC(8): G01D5/353G01H9/00A61B5/0205A61B5/00
CPCA61B5/0205A61B5/7203A61B5/725A61B2562/0233G01D5/35374G01D5/35377G01H9/004
Inventor 洪鹏达洪鹏辉黄泽铗洪宝璇刘前勇
Owner 深圳市矽赫科技有限公司