A distributed fiber optic stress and temperature monitoring device

Abstract

The utility model discloses a kind of distributed optical fiber stress and temperature monitoring device, including detection box, the detection box is equipped with placing groove, the side of detection box is rotatably connected with cover plate, the side of cover plate is equipped with display, the side of detection box is equipped with the plug-in mechanism for optical fiber interface, the both sides of detection box are equipped with locating seat, the corresponding groove is opened in the locating seat, transmission line is slidably connected in the corresponding groove, one end of transmission line is equipped with sleeve, positioning mechanism for positioning sleeve is equipped between sleeve and corresponding groove, the placing groove is equipped with multiple connectors of equidistant arrangement.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic sensing and monitoring technology, and in particular to a distributed fiber optic stress and temperature monitoring device. Background Technology

[0002] Distributed fiber optic sensing technology uses the entire optical fiber as both a sensing unit and a signal transmission medium, enabling the measurement of information at any location along the fiber. Its sensing distance can reach tens or even hundreds of kilometers, making it suitable for applications such as structural health monitoring of large buildings. Its cost is significantly lower than quasi-distributed fiber optic sensing technology with multi-point sensing units. Therefore, fully distributed fiber optic sensing technology is gaining increasing attention and is currently a crucial research direction in fiber optic sensing technology.

[0003] In numerous industrial and engineering scenarios, effective monitoring of environmental stress and temperature is crucial; however, existing monitoring devices suffer from several unresolved issues: 1. Limitations of monitoring methods: Traditional stress and temperature monitoring mostly rely on point sensors. This method can only obtain information from discrete points and cannot comprehensively monitor continuous areas. For long-distance lines, point sensors are difficult to accurately reflect the overall stress and temperature distribution, easily miss key information, and make it difficult to detect potential safety hazards in a timely manner.

[0004] 2. Accuracy and stability issues: During long-term operation, some monitoring devices are affected by environmental factors such as humidity and electromagnetic interference, resulting in a gradual decrease in monitoring accuracy and a deterioration in stability. This reduces the reliability of the acquired data and fails to meet the stringent requirements for high accuracy and high stability of monitoring data. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a distributed optical fiber stress and temperature monitoring device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A distributed optical fiber stress and temperature monitoring device includes a testing box with a placement slot inside. A cover plate is rotatably connected to one side of the testing box, and a display is located on one side of the cover plate. A plug-in mechanism for an optical fiber interface is located on one side of the testing box. Positioning seats are located on both sides of the testing box, and corresponding slots are formed in the positioning seats. A transmission line is slidably connected in the corresponding slot. One end of the transmission line is provided with a sleeve. A positioning mechanism for positioning the sleeve is provided between the sleeve and the corresponding slot. Multiple connectors are arranged at equal intervals in the placement slot.

[0007] Preferably, the insertion mechanism includes a mounting groove on one side of the testing box, the mounting groove is provided with an insertion interface, and the insertion interface has two symmetrically arranged slots.

[0008] Preferably, the positioning mechanism includes multiple circumferentially arranged snap-fit ​​grooves formed on the inner wall of the corresponding groove, and multiple snap-fit ​​blocks are fixedly connected to the side wall of the sleeve, with the snap-fit ​​blocks slidably connected to the snap-fit ​​grooves.

[0009] Preferably, the inner wall of the sleeve is provided with a plurality of circumferentially arranged fitting arc plates, and a pressure sensor is provided between the fitting arc plates and the sleeve.

[0010] Preferably, a thermometer is fixedly connected in the placement slot, and a plurality of equally spaced connecting lines are provided on one side of the insertion interface. The connecting lines pass through the thermometer and are connected to a connector.

[0011] Preferably, a fixing plate is slidably connected in the corresponding groove, a return spring is fixedly connected to one side of the fixing plate, and one end of the return spring is fixedly connected to the inner wall of the corresponding groove.

[0012] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model is equipped with a detection box, a placement slot, a cover plate, a thermometer, a connecting line, a connector, and a display. The detection box and placement slot can provide protection for the detector and the temperature measurement process, avoid interference from external factors, and provide stability for temperature measurement, thereby ensuring the stability of monitoring.

[0013] 2. This utility model is equipped with a positioning seat, transmission line, sleeve, fitting arc plate and fixing plate. Through the sleeve and the internal fitting arc plate, it can perform multi-segment stress detection of the optical fiber tube in conjunction with the transmission line, avoiding the problem of low detection accuracy of point detection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a distributed optical fiber stress and temperature monitoring device proposed in this utility model. Figure 2 This is a schematic diagram of a temperature sensor for a distributed optical fiber stress and temperature monitoring device proposed in this utility model. Figure 3 This is a schematic diagram of the interface structure of a distributed optical fiber stress and temperature monitoring device proposed in this utility model; Figure 4 This is a schematic diagram of the fixed plate structure of a distributed optical fiber stress and temperature monitoring device proposed in this utility model.

[0015] In the diagram: 1. Detection box, 2. Placement slot, 3. Cover plate, 4. Display, 5. Plug interface, 6. Card slot, 7. Temperature sensor, 8. Connecting line, 9. Connector, 10. Positioning seat, 11. Transmission line, 12. Corresponding slot, 13. Card slot, 14. Sleeve, 15. Card block, 16. Adhesive arc plate, 17. Fixing plate, 18. Return spring. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] Reference Figure 1-4 A distributed optical fiber stress and temperature monitoring device includes a detection box 1, a placement slot 2 inside the detection box 1, a thermometer 7 fixedly connected inside the placement slot 2, and a plurality of equally spaced connecting lines 8 on one side of the plug interface 5, the connecting lines 8 passing through the thermometer 7 and connecting the connecting lines 8 to the connector 9. A cover plate 3 is rotatably connected to one side of the test box 1. A display 4 is provided on one side of the cover plate 3. A plug-in mechanism for the fiber optic interface is provided on one side of the test box 1. The plug-in mechanism includes a mounting groove on one side of the test box 1. A plug-in interface 5 is provided in the mounting groove. Two symmetrically arranged card slots 6 are provided in the plug-in interface 5.

[0018] Both sides of the testing box 1 are provided with positioning seats 10. The positioning seats 10 are provided with corresponding grooves 12. A fixing plate 17 is slidably connected in the corresponding grooves 12. A return spring 18 is fixedly connected to one side of the fixing plate 17. One end of the return spring 18 is fixedly connected to the inner wall of the corresponding groove 12. A transmission line 11 is slidably connected in the corresponding groove 12. One end of the transmission line 11 is provided with a sleeve 14. The inner wall of the sleeve 14 is provided with multiple circumferentially arranged fitting arc plates 16. A pressure sensor is provided between the fitting arc plates 16 and the sleeve 14. A positioning mechanism for positioning the sleeve 14 is provided between the sleeve 14 and the corresponding groove 12. The positioning mechanism includes multiple circumferentially arranged snap-fit ​​grooves 13 formed on the inner wall of the corresponding groove 12. Multiple snap-fit ​​blocks 15 are fixedly connected to the side wall of the sleeve 14. The snap-fit ​​blocks 15 are slidably connected to the snap-fit ​​grooves 13. Multiple connectors 9 are provided in the placement groove 2 at equal intervals.

[0019] When using this utility model, such as Figure 1-4As shown, during use, the fiber optic interface is first inserted into the connector 5, and then the interface is snapped and connected via the slots 6 on both sides. At this time, the fiber optic cable is distributed and monitored through multiple connecting lines 8. The distribution quality of the fiber optic cable and the temperature during use can be detected. By monitoring the temperature change and transmission stability of the distributed fiber optic tube, the accuracy of the detection can be improved. After data analysis through connector 9, the data is displayed on display 4 for easy observation. During this process, the transmission line 11 is stretched by pulling the sleeve 14. The sleeve 14 is an elastic arc plate structure, which can be pried open by opening the sleeve on the fiber optic cable. In this method, multiple bonding arc plates 16 are bonded to the sidewall of the optical fiber. The stress analysis and detection process is performed using pressure sensors on the bonding arc plates 16. During this process, the sleeve 14 moves the fixing plate 17 on it when it is pulled. At this time, the traction of the return spring 18 can provide the return traction for the sleeve 14. The transmission line 11 can be pulled back when the sleeve 14 is not in use. During this process, the sleeve 14 cooperates with the corresponding slot 12 for storage. The multiple snap-fit ​​slots 13 and snap-fit ​​blocks 15 on it can be positioned by sliding snap-fit ​​cooperation to ensure its stability during storage.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A distributed optical fiber stress and temperature monitoring device, comprising a detection box (1), characterized in that, The test box (1) is provided with a placement slot (2). A cover plate (3) is rotatably connected to one side of the test box (1). A display (4) is provided on one side of the cover plate (3). A plug-in mechanism for the fiber optic interface is provided on one side of the test box (1). Positioning seats (10) are provided on both sides of the test box (1). A corresponding slot (12) is opened in the positioning seat (10). A transmission line (11) is slidably connected in the corresponding slot (12). A sleeve (14) is provided at one end of the transmission line (11). A positioning mechanism for positioning the sleeve (14) is provided between the sleeve (14) and the corresponding slot (12). A plurality of connectors (9) are provided in the placement slot (2) at equal intervals.

2. The distributed optical fiber stress and temperature monitoring device according to claim 1, characterized in that, The insertion mechanism includes an installation slot on one side of the detection box (1), and an insertion interface (5) is provided in the installation slot. Two symmetrically arranged card slots (6) are provided in the insertion interface (5).

3. The distributed optical fiber stress and temperature monitoring device according to claim 2, characterized in that, The positioning mechanism includes multiple circumferentially arranged snap-fit ​​grooves (13) formed on the inner wall of the corresponding groove (12), and multiple snap-fit ​​blocks (15) are fixedly connected to the side wall of the sleeve (14), and the snap-fit ​​blocks (15) are slidably connected to the snap-fit ​​grooves (13).

4. The distributed optical fiber stress and temperature monitoring device according to claim 3, characterized in that, The inner wall of the sleeve (14) is provided with a plurality of circumferentially arranged fitting arc plates (16), and a pressure sensor is provided between the fitting arc plates (16) and the sleeve (14).

5. The distributed optical fiber stress and temperature monitoring device according to claim 4, characterized in that, A thermometer (7) is fixedly connected in the placement slot (2). A plurality of equally spaced connecting lines (8) are provided on one side of the plug interface (5). The connecting lines (8) pass through the thermometer (7) and are connected to the connector (9).

6. The distributed optical fiber stress and temperature monitoring device according to claim 5, characterized in that, A fixing plate (17) is slidably connected in the corresponding groove (12), and a reset spring (18) is fixedly connected to one side of the fixing plate (17). One end of the reset spring (18) is fixedly connected to the inner wall of the corresponding groove (12).

Images