Hipyramid type optical fiber fade down wave temperature sensor and method for manufacturing its bipyramid optical fiber probe

A technology of temperature sensor and optical fiber probe, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve the problems of complex structure, high cost, and difficult production of optical fiber temperature sensors, and achieve fast and effective acquisition and low cost , The effect of simple manufacturing method

Inactive Publication Date: 2005-11-23
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned existing optical fiber temperature sensors have complex structures, are difficult to manufacture, and have high costs.

Method used

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  • Hipyramid type optical fiber fade down wave temperature sensor and method for manufacturing its bipyramid optical fiber probe
  • Hipyramid type optical fiber fade down wave temperature sensor and method for manufacturing its bipyramid optical fiber probe

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Embodiment Construction

[0014] A preferred embodiment of the present invention is described as follows in conjunction with accompanying drawing:

[0015] see figure 1 with figure 2 , the biconical optical fiber evanescent wave temperature sensor is composed of a light source 1 connected to a detector 3 through an optical fiber through a probe 2, and then the detector 3 is connected to a signal processing unit 4. It is characterized in that the probe 2 is a biconical optical fiber probe. When in the temperature change field, the temperature change is sensed by its bicone section, and the evanescent field of the bicone section changes accordingly, resulting in a change in the transmission energy of the sensing fiber; the depth detector 3 converts the optical signal into an electrical signal Then input the signal processing unit 4; the signal processing unit obtains the temperature information after processing the electrical signal. The structure of the above-mentioned double-tapered optical fiber pr...

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Abstract

The invention relates to a temperature sensor of double conical optic fiber fading down and method of making double conical optic fiber probe. The temperature sensor comprises light source through optic fiber probe connected with detector which connected with signal processing unit; wherein sensing fiber's energy changes with fading down filed of double conical zone changes aroused by censor temperature changes when the probe is in temperature changeable filed; bathometer switches optic signal into electric signal and inputs it into signal processing unit to get temperature information. The method of making double conical optic fiber is warming the individual fiber and fuse and awl it.

Description

technical field [0001] The invention relates to an optical fiber temperature sensor and a method for manufacturing the probe, in particular to a biconical optical fiber evanescent wave temperature sensor and a method for manufacturing the biconical optical fiber probe. Background technique [0002] In recent years, sensors are developing in the direction of high precision, high reliability, strong adaptability, compactness and intelligence. In this regard, fiber optic sensors are favored by domestic and foreign experts and users. Optical fiber has excellent characteristics such as anti-electromagnetic interference and atomic radiation, light weight, good insulation, water resistance, corrosion resistance, and easy networking. It is not only used for normal temperature measurement, but more importantly, it can be used in some special or harsh environments. Temperature measurement, such as high voltage, strong electromagnetic, nuclear radiation, etc. Its sensing ability come...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32
Inventor 包华育王廷云卢军
Owner SHANGHAI UNIV
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