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Temperature sensor based on optical fiber

A technology of temperature sensor and optical fiber, applied in the field of temperature detection, can solve the problems of high cost, complex structure of temperature sensor and unsatisfactory detection accuracy.

Inactive Publication Date: 2021-09-14
李润生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing temperature sensors are generally complex in structure, high in cost, and often unsatisfactory in detection accuracy.

Method used

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  • Temperature sensor based on optical fiber
  • Temperature sensor based on optical fiber

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0024] The terms "first", "second", "third", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily to describe a specific order or sequentially. It should be understood that the items so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-ex...

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Abstract

The invention relates to a temperature sensor based on an optical fiber. The temperature sensor based on an optical fiber comprises an optical fiber, a pyroelectric crystal and glass fibers. A cavity is formed in the optical fiber, and the pyroelectric crystal and the glass fibers are arranged on the two sides of the cavity. The pyroelectric crystal comprises an outer side part and an inner side part which are connected with each other, the outer side part is arranged on the outer side of the cavity, and the inner side part is arranged on the inner side of the cavity. The inner side part is a bulge with a tip end. The glass fibers are charged. The pyroelectric effect is utilized to generate polarized charges to attract charged tiny glass fibers, scattering and refraction of optical signals are changed through the tiny glass fibers, the output optical signals are changed, and then the temperature is detected. The light is very sensitive to reflection and refraction, so that the temperature sensor has very high detection precision and detection sensitivity.

Description

technical field [0001] The invention relates to the technical field of temperature detection, in particular to an optical fiber-based temperature sensor. Background technique [0002] Temperature is one of the most basic physical quantities in science and technology. Physics, chemistry, thermodynamics, flight mechanics, fluid mechanics and other disciplines are inseparable from temperature. It is also one of the most common and important parameters in industrial production. Many chemical reactions cannot be carried out normally or even cannot be carried out without proper temperature. Without a suitable temperature kiln, qualified products cannot be refined. Without a suitable temperature environment, crops cannot grow normally, many electronic instruments cannot work normally, the stored grain in the granary will deteriorate and rot, and the hatching of poultry cannot proceed. Visible, temperature detection and control is very important. [0003] However, the existing te...

Claims

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Application Information

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IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 李润生
Owner 李润生
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