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Fiber grating temperature-humidity sensor package structure

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: 2017-05-10
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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Experimental program
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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 uses a 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 length of the humidity sensor bracket 11 is 90mm-110mm, the width is not less than 22mm, and the height is 6mm-9mm. The height of the wide groove section and the narrow groove section are the same, and both are not more than 6mm. The length of the wide groove section and the narrow groove 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 present invention is:

[0050] The diameter of the grating-engraved fiber 122 is 125 μm, and the length of the grating area is 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 humidity measurement in these fields. The mature electrical humidity sensor products on the market, such as resistive humidity sensors and capacitive humidity sensors have the advantages of high measurement accuracy and fast response speed, but the long-term stability and interchangeability are poor, and they are used in some special applications ( For example, in a strong electromagnetic environment and an oil gas detection environment, it will fail and even cause a safety accident. Therefore, a passive detection humidity sensor is needed in some...

Claims

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Application Information

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Patent Type & Authority Applications(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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