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Preparation method for environmentally sensitive loops

An environment-sensitive, ring-shaped technology, which is applied in gyroscope/steering sensing equipment, instruments, surveying and navigation, etc., can solve problems such as difficulty in applying large vibration levels and large changes in non-orthogonal angles, and achieve improved wettability and contact angle. Reduce and increase the effect of application level

Active Publication Date: 2019-07-05
中航捷锐(北京)光电技术有限公司 +2
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Problems solved by technology

[0004] In view of the above analysis, the purpose of the present invention is to provide a method for preparing an environmentally sensitive ring suitable for harsh environment applications, which solves the problem of non-orthogonal angles of sensitive rings in the prior art under harsh environment application conditions and large temperature changes. Large changes, difficult to apply to problems with large vibration levels

Method used

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  • Preparation method for environmentally sensitive loops
  • Preparation method for environmentally sensitive loops
  • Preparation method for environmentally sensitive loops

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preparation example Construction

[0035] The invention provides a method for preparing an environmentally sensitive ring, see Figure 1 to Figure 4 , including the following steps:

[0036] Step 1: Carrying out surface treatment to skeleton 1 to form treatment layer 2;

[0037] Step 2: cleaning and drying the skeleton 1 obtained in step 1;

[0038] Step 3: forming a modified film layer 3 and a thermal insulation buffer layer 4 on the surface of the treatment layer 2;

[0039] Step 4: Wind the ring component 5 on the skeleton 1 obtained in step 3, and apply glue in real time under the condition of 50-60°C after the winding is completed, to obtain the sensitive ring to be cured;

[0040] Step 5: curing the sensitive ring to be cured;

[0041] Step 6: Carry out environmental stress screening on the cured sensitive ring. Environmental stress screening can effectively release stress before interface sealing, and avoid damage to the sealing layer 6 by stress creep;

[0042] Step 7: Clean the interface between th...

Embodiment 1

[0057] For the convex-shaped hard aluminum alloy (2A12T4) skeleton, the chromic acid anodic oxidation treatment layer is used as the treatment layer, the KH792 silane coupling agent of Nanjing Nende Company is used as the modified film layer, and two layers homologous to the sensitive optical fiber are used Single-mode non-polarized optical fiber is used as the heat-insulating buffer layer 4, and a panda-type polarization-maintaining optical fiber with a cladding diameter of 80 microns / coating diameter of 165 microns is used as the optical fiber for the sensitive ring, and a self-made acrylic resin UV ring adhesive is used. It is wound in a symmetrical way, and Chenguang GD414 is used as the sealing layer.

[0058] Compared with the original sulfuric acid anodized layer, without modified film layer, the same sensitive optical fiber is used as the thermal insulation buffer layer 4, and the panda-type polarization-maintaining optical fiber with a cladding diameter of 80 microns / c...

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Abstract

The invention discloses a preparation method for environmentally sensitive loops, and belongs to the technical field of fiber optic gyroscopes and fiber optic sensing. Thus, the problems of large non-orthogonal angle changes and difficult application on large vibration level of sensitive loops in the prior art can be solved. The preparation method includes the following steps: performing surface treatment, cleaning and drying on a frame; forming a modified film and a thermal insulation buffer layer; winding a loop assembly on the frame, and performing real-time gluing and curing after winding;performing environmental stress screening on a cured sensitive loop; and cleaning the interface between the loop qualified through environmental stress screening and the frame, and adopting sealant to perform sealing and fixing. The preparation method can be used for preparing the environmentally sensitive loops.

Description

technical field [0001] The invention belongs to the technical fields of optical fiber gyroscope and optical fiber sensing, and in particular relates to a preparation method of an environment-sensitive ring that can improve the performance of environmental application. Background technique [0002] Fiber OpTic Gyroscope (FOG for short) is an all-solid-state inertial instrument that uses the optical Sagnac effect (sagnac) to measure the angular rate of the carrier space. The sensitive ring is the core sensor of the fiber optic gyroscope, and it is the actual subject of the sensitive Sagnac effect. It is made of hundreds or even thousands of meters of optical fiber using a special quadrupole or other symmetrical method. Its mass (for example, Environmental adaptability) directly determines the performance of the fiber optic gyroscope. [0003] In the prior art, the sensitive ring is filled with glue and solidified to form a stable structure. The stable structure needs to be in...

Claims

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Application Information

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IPC IPC(8): G01C19/72
CPCG01C19/721
Inventor 谢良平杨东锟胡绪杰刘凯崔志超孔军寇亮亮
Owner 中航捷锐(北京)光电技术有限公司
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