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Optical-fiber hydrogen sensor

A sensor, hydrogen technology, applied in the direction of phase influence characteristic measurement, etc., can solve the problems of reducing the quality of hydrogen sensitive film and affecting the detection accuracy of interferometric fiber optic hydrogen sensor, so as to ensure normal implementation, ensure accuracy, and improve accuracy. Effect

Inactive Publication Date: 2014-08-27
潘国新
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Problems solved by technology

[0004] However, since the hydrogen-sensitive film of the above-mentioned interference-type optical fiber hydrogen sensor is directly plated on the outside of the glass sleeve, external pollution may reduce the quality of the hydrogen-sensitive film, thereby affecting the detection accuracy of the interference-type optical fiber hydrogen sensor.

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Embodiment Construction

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0013] The optical fiber hydrogen sensor provided by the present invention prevents the hydrogen sensitive film from being affected by external polluting gases by building the hydrogen sensitive film inside the incident optical fiber, and improves the accuracy of the hydrogen concentration detection result of the optical fiber hydrogen sensor.

[0014] see figure 1 , which is a structural schematic diagram of an embodiment of the fiber optic hydrogen sensor provided by the present invention, the fiber optic hydrogen ...

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Abstract

The invention provides an optical-fiber hydrogen sensor. The optical-fiber hydrogen sensor comprises an incidence optical fiber, a reflection optical fiber and a hydrogen sensitive film. The incidence optical fiber comprises a light incidence end and a connection end, wherein the connection end is connected with the reflection optical fiber. A hydrogen containing cavity is formed in the connection end of the incidence optical fiber, a semi-penetration and semi-reflection surface is formed on the bottom of the hydrogen containing cavity, and an opening of the hydrogen containing cavity is covered with the reflection end face of the reflection optical fiber. The hydrogen sensitive film is arranged on the inner surface of the hydrogen containing cavity. Air holes are formed in at least two opposite side walls of the microcavity, and the air holes in the opposite side walls are distributed in a staggered mode.

Description

technical field [0001] The invention relates to hydrogen detection technology, in particular to an optical fiber hydrogen sensor and a manufacturing method thereof. Background technique [0002] Hydrogen is an important industrial raw material, which has important applications in petrochemical industry, electronics industry, metallurgical industry, food processing, etc.; at the same time, as a new type of energy, hydrogen is not only clean and environmentally friendly, but also has abundant sources. The status of the new energy field is also becoming more and more important. However, hydrogen is prone to leakage, and when the concentration of hydrogen in the air reaches more than 4%, it will cause an explosion when encountering an open flame. Therefore, during the transportation, storage, industrial production and use of hydrogen, the detection of hydrogen concentration in the environment is very important A very important and necessary job. [0003] Due to the advantages ...

Claims

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Application Information

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IPC IPC(8): G01N21/45
Inventor 潘国新
Owner 潘国新
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