A fiber grating temperature sensor calibration device based on electromagnetic induction heating
An electromagnetic induction heating and fiber grating technology, applied in the field of optical fibers, can solve the problems of uneven heating and inability to meet demands, and achieve the effects of economical production, simple installation, and easy production.
Active Publication Date: 2021-08-24
天津北交智通超导电气科技有限公司
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Problems solved by technology
However, water bath heating can only realize the change of temperature from 0 to 100 ° C, which cannot meet the needs of higher temperature ranges, and there are also problems in the laying of optical fiber sensors
High and low temperature chamber heating can realize the temperature change from 0 to a higher temperature range, but there is a problem of uneven heating
Method used
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0028] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...
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An embodiment of the present invention provides a fiber grating temperature sensor calibration device based on electromagnetic induction heating, including: an induction coil, a closed chamber and a sensor fixing device, the sensor fixing device is used to place a fiber grating sensor and a reference sensor, and is fixed in a closed In the chamber; the airtight chamber includes: a copper barrel, a copper barrel cover, an isolation barrel, an isolation cover, an insulating barrel and an insulating barrel cover, the copper barrel is placed in the insulating barrel, and an insulating barrel is placed between the copper barrel and the insulating barrel; Copper barrel lid, isolation barrel lid and insulation barrel lid are respectively fixed above the mouth of copper barrel, isolation barrel and insulation barrel; the induction coil is fixed on the outer surface of the copper barrel body, and the induction coil passes through the isolation barrel and insulation barrel to connect with external power supply . The device of the invention is simple, convenient, economical and easy to manufacture.
Description
technical field [0001] The invention relates to the field of optical fiber technology, in particular to a calibration device for a fiber grating temperature sensor based on electromagnetic induction heating. Background technique [0002] Due to its small size, light weight, anti-electromagnetic interference, and easy reuse, fiber grating sensors are considered to be widely used in various fields instead of traditional electrical signal sensors. The basic measurement physical parameters of FBG sensing are temperature and strain. According to different application scenarios, temperature measurement is mainly divided into absolute measurement and relative measurement. Like the traditional electrical signal sensor, when using the fiber grating sensor for absolute temperature measurement, the sensor should be calibrated accurately at first. The fiber Bragg grating sensor is a sensor for wavelength demodulation. The broadband light source emits a beam of light. This beam of ligh...
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IPC IPC(8): G01K15/00H05B6/02
CPCG01K15/005H05B6/02
Inventor 方进刘延超贾冬雨闫旭锋吴越
Owner 天津北交智通超导电气科技有限公司