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Device and method for measuring temperature and radioactive rays with fiber bragg grating (FBG) sensors

A technology of fiber optic Bragg and grating sensors, which is applied in the direction of measuring devices, radiation pyrometry, thermometers, etc., can solve the problems of radiation influence and temperature influence, and achieve the effect of preventing accidents from expanding

Inactive Publication Date: 2014-05-21
KOREA ATOMIC ENERGY RES INST +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the above wavelength changes are not only affected by temperature but also by radiation
Therefore, there are certain technical limitations in using a fiber Bragg grating sensor as a sensor for measuring the temperature of the radiation environment

Method used

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  • Device and method for measuring temperature and radioactive rays with fiber bragg grating (FBG) sensors
  • Device and method for measuring temperature and radioactive rays with fiber bragg grating (FBG) sensors
  • Device and method for measuring temperature and radioactive rays with fiber bragg grating (FBG) sensors

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Embodiment Construction

[0030] Next, preferred embodiments of the device and method using the fiber Bragg grating sensor of the present invention as both a temperature and radiation sensor will be described in detail with reference to the accompanying drawings. First of all, it should be noted that with regard to the reference numerals assigned to the components in the drawings, the same reference numerals are used as much as possible even if the same components are shown in different drawings. In addition, when describing the present invention, if the detailed description of related known configurations or functions is considered to be irrelevant to the gist of the present invention, the detailed description will be omitted.

[0031] The principle of light propagation in the optical fiber is the principle of total reflection, that is, when light propagates from a material with a high refractive index to a material with a low refractive index, all light within a certain angle range from the interface ...

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Abstract

The invention relates to a device and a method for measuring temperature and radioactive rays with fiber bragg grating (FBG) sensors. The invention relates to a technology that accurate measurement can be carried out by covering a hollow radioactive ray shielding member on a sensor with two FBG sensors to separate the radioactive ray values and temperature values obtained from the two sensors. According to the invention, no matter in a nuclear station in a normal state or an apparatus generating the radioactive rays, the device can be used as a commonly used sensor system for measuring temperature and radioactive ray quantity, and also realizes commercialization. When a nuclear accident happens, the device also can be used as a sensor system which can remotely measure the temperature and radioactive ray radiation quantities that play critical facts for mastering inner information of accident environment by means of a fiber circuit.

Description

technical field [0001] The invention relates to a device and method for simultaneously measuring temperature and radiation dose by using a fiber bragg grating (fiber bragg grating, FGB) sensor. Specifically, it relates to a technology that uses two fiber Bragg grating sensors, and covers one sensor with a hollow radiation shielding member to separate the radiation amount and temperature value by the two sensors, thereby enabling accurate measurement. Background technique [0002] When the nuclear accident occurred in Fukushima, due to the lack of initial response measures, the handling of the accident was delayed, and it is still not well resolved even one year later. This is because the sensor is installed at the accident site, and the power supply to the sensor for measuring temperature and radiation dose is cut off, and the sensor loses its function, so that the information of the accident site cannot be transmitted to the outside world. [0003] As a powerful countermea...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01T1/00
CPCY02E30/00G01J5/0821G01T1/16G21D3/04
Inventor 李南昊金锺烈曺在完
Owner KOREA ATOMIC ENERGY RES INST
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