Manufacturing method for fiber Bragg grating humidity sensor
A humidity sensor and fiber grating technology, applied in the field of fiber grating humidity sensor production, can solve the problems of grating chirp, inconsistent sensitivity of temperature and humidity sensors, and defective products, so as to improve the measurement accuracy, prevent air bubbles, and ensure the transmission of stress. performance effect
Active Publication Date: 2019-07-23
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology
If these process problems are not solved properly, the sensitivity of temperature and humidity sensors produced in batches will be inconsistent, and even cause the chirp phenomenon of the grating, resulting in defective products
Method used
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Embodiment Construction
[0035] The present invention will be described in more detail below with reference to the accompanying drawings.
[0036] Such as figure 1 with figure 2 As shown, the assembly tool 5 of the present invention includes a mounting base 51 and a base 52, wherein the upper surface of the mounting base 51 is engraved with a film groove 511, a clamping groove 512 and a glue outlet groove 513, and two sides are respectively opened for fixing The threaded hole 514; the film groove 511 is used to fix the moisture-sensitive film, the mounting groove 512 is used to place the connecting piece; the base 52 is provided with a guide rail 521, a mounting seat fixing hole 523 and a positioning hole 524. The material of the mounting seat 51 is polytetrafluoroethylene. The mounting seat fixing hole 523 is used to fix the mounting seat on a certain plane, and the positioning hole 524 is used to fix the fixture 6.
[0037] Such as figure 2 As shown, the film groove 511 is rectangular, the width is no...
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Abstract
The invention discloses a manufacturing method for a fiber Bragg grating humidity sensor, wherein the position of a connecting piece is limited through a clamping groove of an assembly tool, the length and the position after a humidity-sensitive thin film is manufactured are ensured through a film groove of the assembly tool, the moisture-sensitive thin film is tightly pressed through a fixture tool, meanwhile, redundant glue solution is removed by designing the shape of the connecting piece and glue discharging grooves in the left and right sides of the assembly tool, and then, manufacturingof the fiber Bragg grating humidity sensor is completed. According to the method in the invention, engineering production of the humidity-sensitive components of the fiber Bragg grating humidity sensor is realized, the humidity-sensitive thin film is prevented from being warped after being manufactured, the adhesion uniformity is guaranteed, the perception of the humidity-sensitive thin film on the environment humidity can be effectively and accurately transmitted to the fiber Bragg grating, and the measurement precision of the fiber Bragg grating humidity sensor is ensured.
Description
Technical field [0001] The invention belongs to the technical field of optical fiber sensing, and particularly relates to a method for manufacturing an optical fiber grating humidity sensor. Background technique [0002] In the fields of aerospace, electric power, military and meteorology, pharmaceuticals and tobacco, the monitoring of environmental humidity is very necessary. Therefore, it is of great significance to improve the performance of humidity monitoring instruments to ensure that they meet the needs of different testing environments. Common types of humidity sensors include hair type, wet and dry bulb type, capacitive type, resistance type and other humidity sensors. These types of humidity sensors are susceptible to interference from harsh environments such as electromagnetics and oil and gas, and have poor stability and limited application range. [0003] The optical fiber sensor is a passive sensor that is not easily interfered by electromagnetic signals. It is intri...
Claims
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IPC IPC(8): G01N21/17
CPCG01N21/17
Inventor 刘诚易小龙张春彦蓝天
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES