Packaging structure of a fiber grating temperature and humidity sensor

A temperature and humidity sensor, humidity sensor technology, applied in the direction of instruments, measuring devices, measuring instrument components, etc., to achieve the effect of speeding up the response rate

Active Publication Date: 2019-02-15
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, provide a fiber grating temperature and humidity sensor packaging structure, and solve the problems of sensor response rate, grating stress-free and sensor packaging

Method used

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  • Packaging structure of a fiber grating temperature and humidity sensor
  • Packaging structure of a fiber grating temperature and humidity sensor

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Experimental program
Comparison scheme
Effect test

Embodiment

[0044] The diameter of the optical fiber engraved with the grating of the present invention is 125 μm, and the length of the grating area is 6mm-10mm.

[0045] The film 121 adopts polymer moisture sensitive material.

[0046] The surface of the wide groove 111 and the surface of the narrow groove section are both rough surfaces.

[0047] The humidity sensor bracket 11 has a length of 90mm-110mm, a width of not less than 22mm, and a height of 6mm-9mm. The height of the wide slot section and the narrow slot section are the same, and are not greater than 6mm. The length of the wide slot section and the narrow slot section are the same, both 10mm- 20mm.

[0048] The length of the film 121 is 45 mm-65 mm, the width is not less than 20 mm, and the thickness is 20 μm-30 μm, and the film 121 matches the wide groove 111 .

[0049] An example of the invention is:

[0050] The fiber 122 with the grating inscribed has a diameter of 125 μm and a length of the grating region of 10 mm.

...

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Abstract

A fiber grating temperature-humidity sensor package structure comprises a humidity sensor structure, a temperature sensor, a sensor packaging box, a sensor packaging upper cover and other auxiliary parts; the fiber grating temperature-humidity sensor package structure plays an important role in measuring ambient temperature and humidity with fiber grating temperature-humidity sensors, the influence of the structure on sensor sensitivity, error and the like under ambient temperature, humidity structural stress and other factors is fully considered, ventilation and cooling are also considered to increase response time of the sensors.

Description

technical field [0001] The invention relates to an optical fiber grating temperature and humidity sensor packaging structure, which belongs to the technical field of optical fiber sensing. Background technique [0002] Humidity sensors are widely used in many fields, such as industrial control, pharmaceutical production, agricultural planting, weather detection, and food storage. It is of great significance to realize fast and accurate measurement of humidity in these fields. The mature electrical humidity sensor products on the market, such as resistive humidity sensor and capacitive humidity sensor, have the advantages of high measurement accuracy and fast response speed, but the long-term stability and interchangeability are poor, and in some special applications ( For example, strong electromagnetic environment, oil and gas detection environment) will fail, and even cause safety accidents. Therefore, a passive detection humidity sensor is needed in some flammable and ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02G01D11/30G01D11/00
CPCG01D11/00G01D11/30G01D21/02
Inventor 梁同利刘诚黄建业蓝天张春彦
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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