Distributed optical fiber sensing demodulator

Abstract

The utility model relates to the technical field of optical fiber sensing demodulators, in particular to a distributed optical fiber sensing demodulator which comprises an optical fiber sensing demodulator body, a protection mechanism is arranged on the outer wall of the optical fiber sensing demodulator body, and a supporting pad is fixedly connected to the bottom of the optical fiber sensing demodulator body. The protection mechanism comprises a fixing plate fixedly connected above an optical fiber interface on the outer wall of the optical fiber sensing demodulator body, a rotating shaft is rotatably connected in the fixing plate, a protection plate is fixedly connected to the front face of the rotating shaft and outside the fixing plate, and a sealing gasket is fixedly connected to the back face of the protection plate. The distributed optical fiber sensing demodulator is designed, and the optical fiber interface of the optical fiber sensing demodulator is protected by the protection mechanism in the device, so that the problem that the normal use of the device is affected as the optical fiber interface of the existing distributed optical fiber sensing demodulator is directly exposed in the air and is easily polluted by impurities such as dust is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber sensor demodulators, in particular to a distributed optical fiber sensor demodulator. Background Art

[0002] Distributed fiber optic sensor demodulator is a small, high-precision, large dynamic range fiber optic Bragg grating sensor measurement and analysis device. However, existing fiber optic sensor demodulators still have shortcomings. Specifically, the fiber optic port of the existing distributed fiber optic sensor demodulator is directly exposed to the air and is easily contaminated by dust and other debris, affecting the normal use of the device.

[0003] Therefore, a distributed optical fiber sensor demodulator is needed to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a distributed optical fiber sensor demodulator to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A distributed optical fiber sensor demodulator comprises an optical fiber sensor demodulator body, the outer wall of the optical fiber sensor demodulator body is provided with a protection mechanism, and the bottom of the optical fiber sensor demodulator body is fixedly connected with a support pad;

[0007] The protection mechanism includes a fixed plate fixedly connected to the optical fiber interface on the outer wall of the optical fiber sensor demodulator body, the fixed plate is rotatably connected to a rotating shaft inside, a protective plate is fixedly connected to the front of the rotating shaft and outside the fixed plate, a sealing gasket is fixedly connected to the back of the protective plate, a positioning pin is slidably connected to the top of the rotating shaft and inside the fixed plate, a push spring is fixedly connected to the inside of the rotating shaft and below the positioning pin, a sliding plate is slidably connected to the inside of the fixed plate and above the positioning pin, a groove is provided on the outer wall of the sliding plate and directly above the positioning pin, a return spring is fixedly connected to the back of the sliding plate and inside the fixed plate, and a spiral spring is fixedly connected to the outer wall of the rotating shaft and on the back of the positioning pin.

[0008] As a preferred solution of the utility model, the protection mechanism is provided in multiple groups, and the support pad is made of silica gel.

[0009] As a preferred solution of the utility model, the fixed plate, the protective plate and the sliding plate are all made of ABS plastic, the rotating shaft and the sliding plate both penetrate and extend outside the fixed plate, and the connection mode of the positioning pin and the groove is a sliding connection.

[0010] As a preferred solution of the utility model, the positioning pin is made of aluminum alloy, the groove is designed as a trapezoidal structure, and the positioning pin extends through and outside the rotating shaft.

[0011] As a preferred solution of the utility model, the sealing gasket is made of silicone, and the connection mode of the reset spring, the spiral spring and the fixed plate is fixed connection.

[0012] As a preferred solution of the utility model, the protection plate is designed as a rectangular structure, and the connection method between the positioning pin and the fixing plate is a sliding connection.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a distributed optical fiber sensor demodulator is designed, and a protective mechanism in the device is used to protect the optical fiber interface of the optical fiber sensor demodulator. The sliding plate is pushed, and the sliding plate moves inward. The sliding plate moving inward no longer resists the positioning pin, and the pushing spring pushes the positioning pin to move upward. The positioning pin moving upward exits the rotating shaft, and the positioning pin no longer blocks the rotating shaft. The spiral spring drives the protective plate to rotate upward through the rotating shaft, and the protective plate rotating upward no longer blocks the optical fiber interface. The optical fiber wire is inserted into the optical fiber interface, and the optical fiber sensor demodulator measures the optical fiber wire. After the detection is completed, the optical fiber wire is pulled out, and the protective plate is pushed. The protective plate rotates downward around the rotating shaft, and the protective plate returns to its original position and covers the optical fiber interface. The protective plate on the fixed plate covers the optical fiber interface on the optical fiber sensor demodulator body. At the same time, the sealing gasket on the back of the protective plate can block the gap between the outer wall of the optical fiber sensor demodulator and the protective plate to prevent dust in the air from entering the optical fiber interface, thereby solving the problem that the optical fiber socket of the existing distributed optical fiber sensor demodulator is directly exposed to the air and is easily contaminated by dust and other debris, affecting the normal use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the protection mechanism of the utility model;

[0017] Figure 3 It is a side sectional view of the fixing plate of the utility model.

[0018] In the figure: 1. Fiber optic sensor demodulator body; 2. Protection mechanism; 3. Support pad; 201. Fixing plate; 202. Rotating shaft; 203. Protection plate; 204. Sealing pad; 205. Positioning pin; 206. Push spring; 207. Sliding plate; 208. Groove; 209. Reset spring; 210. Volute spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0024] A distributed optical fiber sensor demodulator comprises an optical fiber sensor demodulator body 1, an outer wall of the optical fiber sensor demodulator body 1 is provided with a protection mechanism 2, and a support pad 3 is fixedly connected to the bottom of the optical fiber sensor demodulator body 1;

[0025] The protection mechanism 2 is provided with multiple groups, and the support pad 3 is made of silica gel;

[0026] In this embodiment, reference Figure 2 and Figure 3The protection mechanism 2 includes a fixed plate 201 fixedly connected to the upper part of the optical fiber interface of the outer wall of the optical fiber sensor demodulator body 1, a rotating shaft 202 is rotatably connected inside the fixed plate 201, a protective plate 203 is fixedly connected to the front of the rotating shaft 202 and outside the fixed plate 201, a sealing gasket 204 is fixedly connected to the back of the protective plate 203, a positioning pin 205 is slidably connected to the top of the rotating shaft 202 and inside the fixed plate 201, a pushing spring 206 is fixedly connected to the inside of the rotating shaft 202 and below the positioning pin 205, a sliding plate 207 is slidably connected to the inside of the fixed plate 201 and above the positioning pin 205, a groove 208 is provided on the outer wall of the sliding plate 207 and directly above the positioning pin 205, a return spring 209 is fixedly connected to the back of the sliding plate 207 and inside the fixed plate 201, and a volute spring 210 is fixedly connected to the outer wall of the rotating shaft 202 and on the back of the positioning pin 205;

[0027] The fixed plate 201, the protective plate 203 and the sliding plate 207 are all made of ABS plastic, the rotating shaft 202 and the sliding plate 207 are all penetrated and extended to the outside of the fixed plate 201, the connection mode of the positioning pin 205 and the groove 208 is a sliding connection, the positioning pin 205 is made of aluminum alloy, the groove 208 is a trapezoidal structure design, the positioning pin 205 penetrates and extends to the outside of the rotating shaft 202, the sealing gasket 204 is made of silicone, the reset spring 209, the scroll spring 210 and the fixed plate 201 are all fixedly connected, the protective plate 203 is a rectangular structure design, the connection mode of the positioning pin 205 and the fixed plate 201 is a sliding connection, pushing the sliding plate 207, the sliding plate 207 moves inward, the sliding plate 207 moving inward no longer resists the positioning pin 205, and the pushing spring 206 will push the positioning pin 2 05 moves upward, the upward moving positioning pin 205 exits the rotating shaft 202, the positioning pin 205 no longer blocks the rotating shaft 202, and the spiral spring 210 drives the protective plate 203 to rotate upward through the rotating shaft 202. The upward rotating protective plate 203 no longer blocks the optical fiber interface, and the optical fiber wire is inserted into the optical fiber interface. The optical fiber sensor demodulator body 1 measures the optical fiber wire. After the detection is completed, the optical fiber wire is pulled out and the protective plate 203 is pushed. The protective plate 203 rotates downward around the rotating shaft 202, and the protective plate 203 returns to its original position and covers the optical fiber interface. The protective plate 203 will cover the optical fiber interface on the optical fiber sensor demodulator body 1. At the same time, the sealing gasket 204 on the back of the protective plate 203 can block the gap between the outer wall of the optical fiber sensor demodulator body 1 and the protective plate 203 to prevent dust in the air from entering the optical fiber interface.

[0028] The working process of the utility model is as follows: when the distributed optical fiber sensor demodulator designed by the present invention is in operation, the sliding plate 207 is pushed, and the sliding plate 207 moves inward. The sliding plate 207 moving inward no longer resists the positioning pin 205, and the spring 206 pushes the positioning pin 205 to move upward. The positioning pin 205 moving upward withdraws from the rotating shaft 202, and the positioning pin 205 no longer blocks the rotating shaft 202. The volute spring 210 drives the protective plate 203 to rotate upward through the rotating shaft 202. The protective plate 203 rotating upward no longer blocks the optical fiber interface, and the optical fiber wire is inserted into the optical fiber interface. The optical fiber sensor demodulator body 1 measures the optical fiber wire. After the detection is completed, the optical fiber wire is pulled out, and the protective plate 203 is pushed. The protective plate 203 The protective plate 203 rotates downward around the rotating shaft 202, and returns to its original position and covers the optical fiber interface. The protective plate 203 will cover the optical fiber interface on the optical fiber sensor demodulator body 1. At the same time, the sealing gasket 204 on the back of the protective plate 203 can block the gap between the outer wall of the optical fiber sensor demodulator body 1 and the protective plate 203 to prevent dust in the air from entering the optical fiber interface. The positioning pin 205 is aligned with the rotating shaft 202 that has returned to its original position. At the same time, the protective plate 203 that has returned to its original position no longer blocks the sliding plate 207. The reset spring 209 will push the sliding plate 207 to move outward. The sliding plate 207 that moves outward will squeeze the positioning pin 205, so that the positioning pin 205 is reinserted into the rotating shaft 202, thereby fixing the protective plate 203 on the fixed plate 201.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distributed optical fiber sensor demodulator, comprising an optical fiber sensor demodulator body (1), characterized in that: The outer wall of the optical fiber sensor demodulator body (1) is provided with a protection mechanism (2), and the bottom of the optical fiber sensor demodulator body (1) is fixedly connected with a support pad (3); The protection mechanism (2) comprises a fixing plate (201) fixedly connected to the upper part of the optical fiber interface on the outer wall of the optical fiber sensor demodulator body (1); a rotating shaft (202) is rotatably connected inside the fixing plate (201); a protection plate (203) is fixedly connected to the front of the rotating shaft (202) and outside the fixing plate (201); a sealing gasket (204) is fixedly connected to the back of the protection plate (203); a positioning pin (205) is slidably connected to the top of the rotating shaft (202) and inside the fixing plate (201); A push spring (206) is fixedly connected below the positioning pin (205), a sliding plate (207) is slidably connected inside the fixed plate (201) and above the positioning pin (205), a groove (208) is provided on the outer wall of the sliding plate (207) and directly above the positioning pin (205), a return spring (209) is fixedly connected on the back of the sliding plate (207) and inside the fixed plate (201), and a spiral spring (210) is fixedly connected on the outer wall of the rotating shaft (202) and on the back of the positioning pin (205).

2. A distributed optical fiber sensor demodulator according to claim 1, characterized in that: The protection mechanism (2) is provided in multiple groups, and the support pad (3) is made of silica gel.

3. A distributed optical fiber sensor demodulator according to claim 1, characterized in that: The fixed plate (201), the protective plate (203) and the sliding plate (207) are all made of ABS plastics; the rotating shaft (202) and the sliding plate (207) both penetrate and extend outside the fixed plate (201); and the connection mode between the positioning pin (205) and the groove (208) is a sliding connection.

4. A distributed optical fiber sensor demodulator according to claim 1, characterized in that: The positioning pin (205) is made of aluminum alloy, the groove (208) is designed as a trapezoidal structure, and the positioning pin (205) extends through and outside the rotating shaft (202).

5. A distributed optical fiber sensor demodulator according to claim 1, characterized in that: The sealing pad (204) is made of silicone, and the return spring (209), the spiral spring (210) and the fixing plate (201) are all connected in a fixed manner.

6. A distributed optical fiber sensor demodulator according to claim 1, characterized in that: The protection plate (203) is designed as a rectangular structure, and the connection mode between the positioning pin (205) and the fixing plate (201) is a sliding connection.

Images