Multi-channel optical fiber sensing structure
An optical fiber sensing, multi-channel technology, which is used in the use of optical devices to transmit sensing components and other directions
Pending Publication Date: 2022-07-12
BC P INC CHINA NAT PETROLEUM CORP +2
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[0004] However, the optical fiber sensing structure adopted above only includes a single sensing optical fiber, and can only realize the sensing of one optical fiber channel.
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[0041] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples that are consistent with some aspects of the present application, as recited in the appended claims.
[0042]The embodiment of the present application provides a multi-channel optical fiber sensing structure, the multi-channel optical fiber sensing structure includes a laser 1 , a pulsed light conversion module 2 , an optical switch module 3 , a plurality of optical circulators 4 , and a multi-channel sensing optical fiber 5 and an optical signal processing module 6, wherein a laser 1, a pulsed light conversion ...
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The invention discloses a multi-channel optical fiber sensing structure, and belongs to the technical field of optical fiber sensing. The multi-channel optical fiber sensing structure comprises a laser, a pulse light conversion module, an optical switch module, a plurality of optical circulators, a plurality of sensing optical fibers and an optical signal processing module. According to the multi-channel optical fiber sensing structure provided by the embodiment of the invention, the multiple sensing optical fibers, the laser and the pulse light conversion module are located on the same optical path, the multiple sensing optical fibers, the optical circulators and the optical signal processing module are located on the same optical path, and pulse optical signals can be output for multiple times through the laser and the pulse light conversion module; the optical switch module is used for switching the multiple paths of sensing optical fibers, so that output pulse optical signals are transmitted in the multiple paths of sensing optical fibers in sequence, sequential sensing of the multiple paths of sensing optical fibers can be achieved, and sequential measurement of physical parameters of the multiple paths of sensing optical fibers is achieved.
Description
technical field [0001] The present application relates to the technical field of optical fiber sensing, and in particular, to a multi-channel optical fiber sensing structure. Background technique [0002] In recent years, sensing technology is developing in the direction of sensitivity, precision and adaptability, among which, the application of sensing fiber is more and more extensive. The sensing fiber has the advantages of anti-electromagnetic interference, anti-radiation, high sensitivity, light weight, insulation explosion-proof, corrosion resistance, etc., and the sensing fiber has good optical transmission performance. Through the sensing fiber, the measurement work in complex environment can be realized, such as the measurement of physical parameters such as fiber attenuation, vibration, stress, temperature, speed, etc. [0003] At present, when measuring physical parameters based on sensing fibers, the fiber sensing structure used includes a laser, a pulsed light c...
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Login to View More IPC IPC(8): G01D5/353
CPCG01D5/35361
Inventor 曾科宏李刚林晓晖朱建新秦彦军杨文明闫会朋王赢刘勇王飞厉宇谢侃张继来梁兴旺马迎喜
Owner BC P INC CHINA NAT PETROLEUM CORP