Optical fiber sensor slope monitoring device

Abstract

The utility model discloses an optical fiber sensor side slope monitoring device which comprises a protective shell, one side of the inner wall of the protective shell covers a side slope, positioning grooves are formed in the two sides of the inner wall of the protective shell, positioning mechanisms are arranged on the surfaces of the positioning grooves, and optical fiber cables are fixedly installed in the positioning mechanisms. One end of the optical fiber cable is fixedly connected with a sensor body, the other end is fixedly connected with a positioning block, a monitoring mechanism is fixedly mounted on the surface of the optical fiber cable, and one end of the monitoring mechanism is fixedly mounted in a slope. The beneficial effects of the utility model are that the optical fiber cable is fixedly installed on the protective housing through the positioning mechanism, after the protective housing is installed at one side of the slope, the optical fiber cable is installed at the outer side of the slope, and the change in the slope is transmitted to the optical fiber cable through the monitoring mechanism, thereby effectively preventing the optical fiber cable from being corroded and damaged after being used for a long time. The tearing of the optical fiber cable when the structure in the slope changes is prevented, and the service life of the optical fiber sensor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of slope monitoring, in particular to a fiber optic sensor slope monitoring device. Background Art

[0002] Safety monitoring of slope engineering has long been an important topic in the field of geotechnical engineering. With the acceleration of urbanization and the development of natural resources, the scale and complexity of slope engineering are increasing. How to ensure the safety of slopes, timely forecast dangerous conditions, and prevent the frequent occurrence of slope disasters have become urgent issues to be solved. Therefore, it is particularly important to accurately monitor and scientifically evaluate the stability of slope engineering.

[0003] In the existing slope safety monitoring technology, fiber optic sensors are widely used in real-time monitoring of key data such as pressure, displacement and internal stress of slopes due to their high precision and high sensitivity. However, traditional fiber optic sensors have obvious limitations in practical applications. Specifically, when monitoring slopes, traditional fiber optic sensors usually need to bury fiber optic cables inside the soil layer of the slope to directly obtain the change information inside the slope. Although this method can ensure the sensitivity of monitoring, the fiber optic cables buried in the soil layer are easily corroded by factors such as chemicals and moisture in the soil, resulting in cable damage, affecting the accuracy and reliability of monitoring data. In addition, when the slope structure changes (such as landslides, collapses, etc.), the fiber optic cables buried in the soil layer are easily torn by external forces and broken, which leads to the failure of the fiber optic sensor and the inability to continue to work normally. This not only increases the maintenance cost, but may also cause interruptions or delays in the monitoring of the safety status of the slope, posing a threat to the safety and stability of the slope project. Therefore, it is necessary to propose a fiber optic sensor slope monitoring device to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes a fiber optic sensor slope monitoring device to overcome the above technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A fiber optic sensor slope monitoring device comprises a protective shell, one side of the protective shell covers the slope, positioning grooves are opened on both sides of the inner wall of the protective shell, a positioning mechanism is provided on the surface of the positioning groove, an optical fiber cable is fixedly installed in the positioning mechanism, one end of the optical fiber cable is fixedly connected to the sensor body, and the other end is fixedly connected to the positioning block, a monitoring mechanism is fixedly installed on the surface of the optical fiber cable, and one end of the monitoring mechanism is fixedly installed inside the slope.

[0007] Furthermore, in order to achieve fixed installation of the optical fiber cable on the protective housing, the positioning mechanism includes a support block fixedly installed on one side of the inner wall of the positioning groove, one side of the support block is fixedly connected to a limiting ring 1, one side of the limiting ring 1 is rotatably installed with a limiting ring 2, the limiting ring 1 and the limiting ring 2 are closed to each other to form a positioning channel, and the diameter of the optical fiber cable matches the positioning channel.

[0008] Furthermore, in order to realize real-time monitoring of structural changes within the slope, the monitoring mechanism includes a transmission column fixedly installed on the surface of the optical fiber cable, one side of the transmission column is fixedly connected to a support column, one end of the support column is fixedly connected to a telescopic spring, the end of the telescopic spring is fixedly connected to a transmission rod, and the transmission rod is fixedly installed inside the slope.

[0009] Furthermore, in order to fix the end of the optical fiber cable, a limiting column is fixedly connected to one side of the inner wall of the protective shell, and a hanging ring is fixedly connected to the end of the positioning block. The hanging ring is installed through the limiting column, and a closing cover is threadedly connected to the top of the limiting column.

[0010] Furthermore, in order to achieve fixed installation of the protective shell on one side of the slope, embedded rods are fixedly connected to both sides of the inner wall of the protective shell.

[0011] Furthermore, in order to protect the sensor body, a protective shell is fixedly installed on the outer surface of the sensor body.

[0012] Furthermore, in order to achieve ventilation and air permeability in the protective shell, air holes are opened on the surface of the protective shell.

[0013] The beneficial effects of the utility model are as follows: after the fiber optic cable is installed on the inner wall of the protective shell by means of a positioning mechanism, the protective shell is then installed on the inclined surface of the slope, so that the transmission rod on the fiber optic cable is embedded in the interior of the slope, and is used to monitor and transmit the structural changes inside the slope. The fiber optic cable is on the outer surface of the slope together with the protective shell, and there is no need to bury it in the soil layer of the slope, which effectively prevents the fiber optic cable from being corroded and damaged after long-term use. Moreover, through the telescopic spring in the monitoring mechanism, after the internal structure of the slope changes and drives the transmission rod to shift, the telescopic spring can transmit force to the fiber optic cable through its own telescopic movement, while effectively preventing the fiber optic cable from being violently torn and broken, thereby further protecting the fiber optic cable and improving the service life of the fiber optic sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the surface structure of a fiber optic sensor slope monitoring device according to an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of a protective housing in a slope monitoring device of an optical fiber sensor according to an embodiment of the utility model;

[0017] Figure 3 yes Figure 2 The enlarged schematic diagram at A in the middle;

[0018] Figure 4 yes Figure 2 The enlarged schematic diagram of point B in the middle;

[0019] Figure 5 yes Figure 2 Enlarged schematic diagram at point C in the middle.

[0020] In the figure:

[0021] 1. Protective shell; 2. Slope; 3. Positioning groove; 4. Positioning mechanism; 401. Support block; 402. Limiting ring one; 403. Limiting ring two; 404. Positioning channel; 5. Optical fiber cable; 6. Sensor body; 7. Positioning block; 8. Monitoring mechanism; 801. Transmission column; 802. Support column; 803. Telescopic spring; 804. Transmission rod; 9. Limiting column; 10. Suspension ring; 11. Closing cover; 12. Insert rod; 13. Protective shell; 14. Air vent. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5The utility model provides a technical solution: a fiber optic sensor slope monitoring device, comprising a protective shell 1 made of metal, one side of the inner wall of the protective shell 1 covers the slope 2, a pair of positioning grooves 3 are opened on both sides of the inner wall of the protective shell 1, and a positioning mechanism 4 is provided on the surface of each positioning groove 3, and an optical fiber cable 5 is fixedly installed in the positioning mechanism 4 for transmitting a light source to monitor the slope 2; one end of the optical fiber cable 5 is fixedly connected to a sensor body 6 for sending and receiving light signals and analyzing the light signal change data after monitoring the slope 2; the other end is fixedly connected to a positioning block 7, a monitoring mechanism 8 is fixedly installed on the surface of the optical fiber cable 5, and one end of the monitoring mechanism 8 is fixedly installed inside the slope 2 for transmitting the structural changes inside the slope 2 to the optical fiber cable 5; the positioning mechanism 4 A pair of support blocks 401 are fixedly installed on one side of the inner wall of the positioning groove 3, one side of the support block 401 is fixedly connected to a limiting ring 1 402, one side of the limiting ring 1 402 is rotatably installed with a limiting ring 2 403, the limiting ring 1 402 and the limiting ring 2 403 are closed to each other to form a positioning channel 404, the diameter of the optical fiber cable 5 matches the positioning channel 404, one side of the inner wall of the protective shell 1 is fixedly connected to a limiting column 9, the end of the positioning block 7 is fixedly connected to a hanging ring 10, the hanging ring 10 is installed through the limiting column 9, the top of the limiting column 9 is threadedly connected to a closing cover 11, after the end of the optical fiber cable 5 is fixed on the limiting column 9, the partial structure of the optical fiber cable 5 is passed through the various positioning channels 404 on the inner wall of the protective shell 1, so as to realize the fixed and tightened installation of the optical fiber cable 5.

[0024] See also Figure 1-Figure 5 The monitoring mechanism 8 includes a plurality of transmission columns 801 fixedly installed on the surface of the optical fiber cable 5, one side of each transmission column 801 is fixedly connected to a support column 802, one end of the support column 802 is fixedly connected to a telescopic spring 803, the end of the telescopic spring 803 is fixedly connected to a transmission rod 804, and the transmission rod 804 is fixedly installed inside the slope 2. When the structure inside the slope 2 changes, the transmission rod 804 is squeezed to change its direction. After the transmission rod 804 is offset, the telescopic spring 803 is pulled, and the telescopic spring 803 then transmits the pulling force to The optical fiber cable 5 changes the internal optical signal of the optical fiber cable 5 at the changed position, thereby realizing monitoring of the changes inside the slope 2; the inner wall of the protective shell 1 is fixedly connected with the embedded rods 12 on both sides, and the protective shell 1 is fixedly installed on the inclined surface of the slope 2 by inserting the embedded rods 12 into the inside of the slope 2; the outer surface of the sensor body 6 is fixedly installed with a protective shell 13 made of metal material, which is used to protect the sensor body 6; the surface of the protective shell 1 is provided with air holes 14, which are used to realize ventilation and air permeability between the inner wall of the protective shell 1 and the inclined surface of the slope 2.

[0025] In summary, with the aid of the above technical solution of the utility model, in actual use, after the optical fiber cable 5 is installed on the inner wall of the protective shell 1 through the positioning mechanism 4, the protective shell 1 is then installed on the inclined surface of the slope 2 through the embedding rod 12, so that the transmission rod 804 on the optical fiber cable 5 is embedded in the inside of the slope 2, and the optical fiber cable 5 is on the outer surface of the slope 2 together with the protective shell 1. The optical fiber cable 5 can be monitored without burying the optical fiber cable 5 in the slope 2 to prevent the optical fiber cable 5 from being corroded and damaged; when the structure inside the slope 2 changes, the transmission rod 804 is squeezed at the structural change location to change its direction, and the transmission rod 804 is offset and pulls the telescopic spring 803, and the telescopic spring 803 then transmits the tension to the optical fiber cable 5, so that the internal optical signal of the optical fiber cable 5 at the changed position changes, thereby realizing the monitoring of the changes inside the slope 2, and the structural changes of the slope 2 are monitored by the transmission column 801 and the telescopic spring 803, which can effectively prevent the optical fiber cable 5 from being torn and broken when the structure of the slope 2 changes.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fiber optic sensor slope monitoring device, characterized in that: The invention comprises a protective shell (1), wherein one side of the inner wall of the protective shell (1) covers the side slope (2), positioning grooves (3) are provided on both sides of the inner wall of the protective shell (1), a positioning mechanism (4) is provided on the surface of the positioning groove (3), an optical fiber cable (5) is fixedly installed in the positioning mechanism (4), one end of the optical fiber cable (5) is fixedly connected to a sensor body (6), and the other end is fixedly connected to a positioning block (7), a monitoring mechanism (8) is fixedly installed on the surface of the optical fiber cable (5), and one end of the monitoring mechanism (8) is fixedly installed inside the side slope (2).

2. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: The positioning mechanism (4) comprises a support block (401) fixedly mounted on one side of the inner wall of the positioning groove (3); a limiting ring 1 (402) is fixedly connected to one side of the support block (401); a limiting ring 2 (403) is rotatably mounted on one side of the limiting ring 1 (402); the limiting ring 1 (402) and the limiting ring 2 (403) are closed to each other to form a positioning channel (404); and the diameter of the optical fiber cable (5) matches the positioning channel (404).

3. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: The monitoring mechanism (8) comprises a transmission column (801) fixedly mounted on the surface of the optical fiber cable (5); one side of the transmission column (801) is fixedly connected to a support column (802); one end of the support column (802) is fixedly connected to a telescopic spring (803); the end of the telescopic spring (803) is fixedly connected to a transmission rod (804); and the transmission rod (804) is fixedly mounted inside the slope (2).

4. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: A limiting column (9) is fixedly connected to one side of the inner wall of the protective housing (1), a hanging ring (10) is fixedly connected to the end of the positioning block (7), the hanging ring (10) is installed through the limiting column (9), and a closing cover (11) is threadedly connected to the top of the limiting column (9).

5. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: Insertion rods (12) are fixedly connected to both sides of the inner wall of the protective shell (1).

6. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: A protective shell (13) is fixedly mounted on the outer surface of the sensor body (6).

7. The optical fiber sensor slope monitoring device according to claim 1, characterized in that: The protective shell (1) has ventilation holes (14) on its surface.

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