Pressure sensor based on heterogeneous optical fibers

Abstract

The invention discloses a pressure sensor based on heterogeneous optical fibers. According to the technical scheme, the pressure sensor comprises a pulse laser transmitter, one side of the pulse laser transmitter being electrically connected with an optical fiber cable, a detection box being arranged on one side of the pulse laser transmitter, and an instrument groove being formed in the detection box; an optical fiber pressure sensor, fixedly mounted in the instrument groove; when in use, the heterogeneous optical fiber cable core and the optical fiber cable are electrically connected together, the movable ring can be pulled out from the interior of the connecting groove, the upper sliding block and the lower limiting block are extruded to be close to each other, and the inner arc surfaces of the upper sliding block and the lower limiting block can be attached to the optical fiber cable. And then the bolts are in threaded connection with the threaded grooves, so that the heterogeneous optical fiber cable core and the optical fiber cable are tightly and electrically connected together, and detection errors caused by received optical signal data emitted by the pulse laser emitter are avoided, thereby achieving the effect of improving the detection accuracy.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a pressure sensor based on heterogeneous optical fibers. Background technique [0002] Optical fiber sensing technology is one of the most important sensing technologies in the optical field, and has been widely used in construction, machinery, high-speed rail, bridges, defense industry and other fields. [0003] For example, the Chinese patent with the publication number CN206725132U proposes a pressure sensor and a pressure sensing device based on a heterogeneous optical fiber. The strength of the collision realizes the effect that the pulsed light can be adjusted according to the received optical signal. [0004] However, the above-mentioned pressure sensor and pressure sensing device based on heterogeneous optical fibers still have some shortcomings. For example, when the pulse laser transmitter is electrically connected to the optical fiber pressure sensor, so...

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Problems solved by technology

[0004] However, the above-mentioned pressure sensor and pressure sensing device based on heterogeneous optical fibers still have some shortcomings. For example, when the pulse laser transmitter is electrically connected to the optical fiber pressure sensor, some signals may appear in the data received by the optical fiber pressure sensor. loss, which will lead to inaccurate detected values, in order to solve the above problems, we propose a pressure sensor based on heterogeneous optical fibers

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