A reliability assessment device for optical fiber sensor network

Abstract

The present invention discloses a reliability evaluation device for an optical fiber sensor network, and relates to the field of optical fiber sensor networks. A reliability evaluation method for an optical fiber sensor network mainly includes the following operation steps: Step 1, selecting a test sample: When a batch of optical fiber sensor network cables are produced, a optical fiber sensor network cable can be randomly selected from the cables to ensure the authenticity of the reliability evaluation result; when testing and evaluating the reliability of an optical fiber, the present invention can simulate the state of the optical fiber being accidentally pulled, so as to judge whether the stability of the network transmission meets the requirements when the optical fiber sensor network cable is subjected to an instantaneous pulling force through the fluctuation of the network signal on the network test equipment, and whether the connection between the optical fiber sensor network cable and the optical fiber adapter is stable and reliable. At the same time, the tensile strength of the optical fiber can be tested, so as to comprehensively evaluate whether the reliability of the optical fiber meets the standard by combining multiple detection data.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fiber sensor networks, and in particular relates to a reliability evaluation device for an optical fiber sensor network. Background Art

[0002] A fiber optic sensing network is composed of two or more fiber optic sensors (such as fiber Bragg grating fiber optic sensors) connected together in a certain topological structure and combined with a light source or a demodulator. The reliability of a fiber optic sensing network is the ability of the fiber optic sensing network to maintain normal operation under abnormal circumstances. It is an important parameter for evaluating the performance of a fiber optic sensing network.

[0003] As a carrier of network transmission, the reliability of the optical fiber sensor network line is very important. Therefore, when the optical fiber sensor network line is put into use, it is necessary to test and evaluate the performance of the optical fiber sensor network line to ensure the reliability of the optical fiber sensor network during operation. However, the existing reliability evaluation equipment for optical fiber sensor networks is relatively simple in testing the performance of optical fibers, and usually only tests one performance of the optical fiber. When it is necessary to test multiple performances of the optical fiber, it is necessary to use multiple devices. Therefore, when evaluating the reliability of the optical fiber sensor network, the evaluation efficiency needs to be further improved. In view of this, the present invention is specially proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a reliability assessment device for an optical fiber sensor network that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a reliability evaluation method of an optical fiber sensor network, which mainly includes the following operating steps:

[0006] Step 1: Select the test sample:

[0007] When a batch of optical fiber sensor network cables are produced, one optical fiber sensor network cable can be randomly selected from them to ensure the authenticity of the reliability evaluation results;

[0008] Step 2: Sample confirmation:

[0009] Perform an appearance inspection on the selected fiber optic sensor network cable to check whether there is any damage, etc. If the sample is unqualified, repeat step 1 again, randomly select a fiber optic sensor network cable, and then re-confirm to ensure that the quality of the selected sample meets the requirements;

[0010] Step 3: Sample installation:

[0011] Install the network fiber optic modem and router into two installation boxes respectively, then connect the fiber optic adapter at one end of the fiber optic sensor network cable to the network fiber optic modem, then insert the fiber optic sensor network into the through hole of the pull plate, and connect the fiber optic adapter at the other end of the fiber optic sensor network cable to the router, and the installation of the fiber optic sensor network cable can be completed;

[0012] Step 4: Network debugging:

[0013] Power on the network fiber optic modem and router, then connect the network fiber optic modem to the external network interface, and then connect the network test equipment to the router for WLAN network connection to ensure that the fiber optic sensor network cable can transmit the network normally;

[0014] Step 5: Optical fiber sensor network line reliability assessment test:

[0015] Turn the bolts on both sides of the test box so that the bolts drive the two moving plates to move away from each other to tighten the fiber optic sensor network line, and then return the dynamometer to zero, then start the air pump to deliver gas to the air storage chamber, when the gas in the air storage chamber reaches a certain air pressure value, then open the first solenoid valve in the air delivery pipe, and then the gas in the air storage chamber will instantly enter the cylinder through the air delivery pipe, and then the piston rod will overcome the tension of the tension spring under the push of the gas and move downward, and the piston rod will pull the fiber optic sensor network line downward through the pull plate, thereby transmitting the network information on the mobile phone. The size of the number can be used to determine the stability of network transmission when the fiber optic sensor network cable is subjected to instantaneous pulling force, as well as the stability of the connection between the fiber optic sensor network cable and the fiber optic adapter. As the pull plate continues to pull the fiber optic sensor network cable downward, the tension applied by the tension spring to the tension gauge will continue to increase. When the fiber optic sensor network cable breaks, the tension gauge will display the maximum tensile strength of the fiber optic sensor network cable, thereby detecting the tensile strength of the fiber optic sensor network cable. The combined data of multiple tests can then be used to evaluate whether the reliability of the fiber optic sensor network cable meets the standards.

[0016] A reliability assessment device for an optical fiber sensor network, used in a reliability assessment method for an optical fiber sensor network, comprising: two groups of symmetrically arranged T-shaped slide blocks, slidably connected in two groups of T-shaped slide grooves opened inside the test box; legs, fixedly installed at the four corners of the bottom of the test box; the movable plate symmetrically slidably connected in the test box, and the two movable plates are respectively fixedly connected to the adjacent groups of T-shaped slide blocks; the installation box is symmetrically fixedly connected to the adjacent sides of the two movable plates; the bolts are symmetrically connected to the two sides of the test box through threads, and the dynamometer is rotatably connected to the end of the bolt close to the movable plate The two ends of the tension spring are fixedly connected to the tension meter and the movable plate respectively; the air storage chamber is arranged at the lower end inside the test box, the air pump is fixedly connected to the bottom of the test box, and the air outlet is connected to the air storage chamber; the cylinder is fixedly connected to a position between the two movable plates in the test box, the piston rod with a piston is slidably connected in the cylinder, the tensioning spring is arranged in the cylinder, and the two ends are fixedly connected to the piston rod and the lower end of the cylinder respectively, the pulling plate is fixedly connected to the upper end of the piston rod, the air inlet of the cylinder is connected to the air storage chamber through an air pipe, and the first solenoid valve is arranged in the air pipe.

[0017] In order to facilitate the testing of multiple fiber optic sensor network cables at one time and improve the efficiency of fiber optic sensor network cable testing, further, multiple installation boxes are provided and fixedly connected to the movable plate at equal intervals, and multiple through-holes are provided on the pull plate, and the positions match the positions of the installation boxes.

[0018] In order to prevent the pull plate from shaking due to the influence of the broken optical fiber sensing network line when one of the optical fiber sensing network lines breaks, further, a plurality of cylinders are arranged at equal intervals, the air supply pipe is a multi-interface shunt pipe, and the multiple air outlets of the air supply pipe are respectively connected to the air inlets of the multiple cylinders.

[0019] In order to prevent components of the optical fiber sensing network cable from splashing out of the test box and causing injuries to staff after the optical fiber sensing network cable breaks, the upper opening of the test box is further connected to two box covers by symmetrical rotation through hinges, and the box covers are transparent plates.

[0020] In order to utilize the principle of thermal expansion of optical fiber sensing network lines to evaluate the reliability of optical fiber performance after being affected by temperature, destroy the physical structure inside the optical fiber, and evaluate the reliability of optical fiber performance after being affected by temperature, further, a heater is installed in the air storage chamber, and the air storage chamber is connected to the inside of the test box through a vent, and a plurality of vents are provided, and a second solenoid valve is installed in the vent.

[0021] In order to facilitate waterproof testing of the fiber optic sensing network cable and the connection between the fiber optic sensing network cable and the fiber optic adapter, further, a water pipe connected to the air storage chamber is provided on one side of the test box, a one-way valve is installed in the water pipe, and the water outlet of the water pipe is located below the heater.

[0022] In order to facilitate real-time monitoring of the temperature in the air storage cavity and the temperature inside the test box, two sets of thermometers are further provided on the front of the test box, and the detection ends of the two sets of thermometers extend to the inside of the test box and the air storage cavity respectively.

[0023] In order to prevent the optical fiber sensor network line from being pulled and driving the movable plate to move, the T-shaped slider is stuck in the T-shaped slide groove. Furthermore, rollers are symmetrically installed on the upper and lower sides of the T-shaped slider, and the rollers roll against the inner wall of the T-shaped slide groove.

[0024] In order to facilitate the moving plate to move more smoothly, further, a guide rod is symmetrically fixedly connected to one side of the moving plate away from the installation box, and the guide rod is inserted into the test box and is located above the bolt.

[0025] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention uses a movable plate, a dynamometer, a tension spring, an air pump, an air pipe, an air cylinder, a piston rod, a tension spring, a pull plate, etc. in combination. When testing and evaluating the reliability of the optical fiber, the state of the optical fiber being accidentally pulled can be simulated, so that when the optical fiber sensing network line is subjected to an instantaneous pulling force, it can be judged through the network signal fluctuation on the network testing equipment whether the stability of the network transmission meets the requirements, and whether the connection between the optical fiber sensing network line and the optical fiber adapter is stable and reliable. At the same time, the tensile strength of the optical fiber can be tested. Finally, the data of multiple tests can be combined to more comprehensively evaluate whether the reliability of the optical fiber meets the standard. Not only can the comprehensiveness of the reliability evaluation of the optical fiber sensing network be guaranteed, but also the efficiency of the evaluation can be improved.

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached picture:

[0028] Figure 1 A schematic diagram of the structure of a reliability evaluation device for an optical fiber sensor network proposed by the present invention Figure 1 ;

[0029] Figure 2 A schematic diagram of the structure of a reliability evaluation device for an optical fiber sensor network proposed by the present invention Figure 2 ;

[0030] Figure 3 A schematic diagram of the internal structure of a reliability assessment device for an optical fiber sensor network proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of a T-shaped slide and a heater in a test box of a reliability evaluation device for an optical fiber sensor network proposed by the present invention;

[0032] Figure 5 A schematic diagram of the structure of a moving plate, a bolt, a tension gauge, a tension spring, a guide rod, a T-shaped slider, a cylinder, a piston rod, a tension spring, an air pipe, a pull plate, an installation box, a fiber optic sensor network cable, a fiber optic adapter, a network fiber optic modem, and a router in a reliability assessment device for a fiber optic sensor network proposed by the present invention;

[0033] Figure 6 This is a schematic structural diagram of a T-shaped slider and a roller of a reliability assessment device for an optical fiber sensor network proposed by the present invention.

[0034] In the figure: 1. test box; 101. box cover; 102. air storage chamber; 103. T-shaped slide; 104. air pump; 105. heater; 106. air vent; 107. air pipe; 108. thermometer; 109. leg; 2. moving plate; 201. T-shaped slider; 202. roller; 3. bolt; 301. dynamometer; 302. tension spring; 303. guide rod; 4. cylinder; 401. piston rod; 402. tension spring; 403. pull plate; 5. installation box; 501. network fiber optic modem; 502. router; 503. fiber optic sensing network cable; 504. fiber optic adapter. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0036] Embodiment 1:

[0037] Reference Figure 1-Figure 6A reliability evaluation device for an optical fiber sensor network comprises: two groups of symmetrically arranged T-shaped sliders 201, which are slidably connected to two groups of T-shaped slide grooves 103 opened inside a test box 1; legs 109, which are fixedly installed at the four corners of the bottom of the test box 1; a moving plate 2 is symmetrically slidably connected to the test box 1, and the two moving plates 2 are respectively fixedly connected to the adjacent groups of T-shaped sliders 201; an installation box 5 is symmetrically fixedly connected to the adjacent sides of the two moving plates 2; a bolt 3 is symmetrically connected to the two sides of the test box 1 through a thread, a dynamometer 301 is rotatably connected to one end of the bolt 3 close to the moving plate 2, and the two ends of a tension spring 302 are respectively connected to the dynamometer 30 1. The movable plate 2 is fixedly connected; the air storage chamber 102 is arranged at the lower end inside the test box 1, the air pump 104 is fixedly connected to the bottom of the test box 1, and the air outlet is connected to the air storage chamber 102; the cylinder 4 is fixedly connected to the position between the two movable plates 2 in the test box 1, the piston rod 401 with a piston is slidably connected in the cylinder 4, the tensioning spring 402 is arranged in the cylinder 4, and the two ends are respectively fixedly connected to the piston rod 401 and the lower end of the cylinder 4, the pulling plate 403 is fixedly connected to the upper end of the piston rod 401, the air inlet of the cylinder 4 is connected to the air storage chamber 102 through the air supply pipe 107, and the first solenoid valve is arranged in the air supply pipe 107.

[0038] When it is necessary to test and evaluate the reliability of the produced optical fiber sensor network line 503, first install the network optical fiber modem 501 and the router 502 into the two installation boxes 5 respectively, then pass the optical fiber sensor network line 503 with optical fiber adapters 504 installed at both ends through the through-hole of the pull plate 403, and then connect the two ends of the optical fiber sensor network line 503 to the network optical fiber modem 501 and the router 502 respectively through the optical fiber adapters 504, then turn on the power of the network optical fiber modem 501 and the router 502, and then connect the network optical fiber modem 501 to the external network interface, and then test the network. The device is connected to the router 502 for WLAN network connection to ensure that the optical fiber sensor network line 503 can transmit the network normally. After the optical fiber sensor network line 503 is installed, the bolts 3 on both sides of the test box 1 can be rotated to make the bolts 3 pull the movable plate 2 through the tension spring 302 to make the two movable plates 2 move away from each other until the optical fiber sensor network line 503 is straightened. Then, the tension gauge 301 can be reset to zero, and then the air pump 104 can be started. The air pump 104 will deliver gas to the air storage chamber 102. When the air pressure value in the air storage chamber 102 reaches the specified value, the first solenoid valve can be opened at this time, and the air pressure in the air storage chamber 102 can be released. The gas will quickly enter the cylinder 4 through the gas pipe 107, and the piston rod 401 will quickly move downward under the push of the gas to overcome the tension of the tension spring 402. The piston rod 401 will cause the pull plate 403 to quickly pull the optical fiber sensing network line 503 downward, thereby generating an instantaneous pulling force on the optical fiber sensing network line 503, simulating the state of the optical fiber sensing network line 503 being accidentally pulled. Then, through the network signal fluctuation on the network test equipment, it can be determined whether the stability of the network transmission meets the requirements when the optical fiber sensing network line 503 is subjected to the instantaneous pulling force, and whether the optical fiber sensing network line 503 and the optical fiber adapter head are stable. 504 is stable and reliable, and then the gas continues to be delivered into the cylinder 4. The pull plate 403 will continue to pull the optical fiber sensing network line 503 downward. When the optical fiber sensing network line 503 breaks or the optical fiber sensing network line 503 is disconnected from the optical fiber adapter 504, the value displayed on the tensile gauge 301 can be recorded at this time, so as to detect whether the tensile strength of the optical fiber sensing network line 503 is reliable. Finally, the data from multiple tests can be combined to more comprehensively evaluate whether the reliability of the optical fiber meets the standards, which can not only ensure the comprehensiveness of the reliability evaluation of the optical fiber sensing network, but also improve the efficiency of the evaluation.

[0039] Embodiment 2:

[0040] Reference Figure 1-Figure 6, a reliability assessment device for an optical fiber sensing network, which is basically the same as Example 1, and further, a plurality of installation boxes 5 are provided, and are fixedly connected to the movable plate 2 at equal intervals, a plurality of through openings are provided on the pull plate 403, and the positions thereof match the positions of the installation boxes 5, and when testing the optical fiber sensing network line 503, a plurality of optical fiber sensing network lines 503 can be tested simultaneously at one time, which effectively improves the efficiency of testing the optical fiber sensing network line 503.

[0041] There are multiple cylinders 4 arranged at equal intervals, and the air supply pipe 107 is a multi-interface shunt pipe. The multiple air outlets of the air supply pipe 107 are respectively connected to the air inlets of the multiple cylinders 4. When the piston rod 401 pulls the optical fiber sensing network line 503 downward through the pull plate 403, the stability of the pull plate 403 can be guaranteed to avoid the pull plate 403 shaking due to the broken optical fiber sensing network line 503 when one of the optical fiber sensing network lines 503 breaks, thereby affecting the test accuracy of the remaining optical fiber sensing network lines 503.

[0042] The upper opening of the test box 1 is symmetrically connected to two box covers 101 by hinges. The box covers 101 are transparent plates, which can protect the staff and prevent the parts of the optical fiber sensing network cable 503 from splashing out of the test box 1 and causing damage to the staff after the optical fiber sensing network cable 503 breaks, thereby effectively improving the safety of the device. By making the box cover 101 of transparent material, the staff can view the test process through the box cover 101 when testing the optical fiber, which provides convenience for the staff.

[0043] Embodiment 3:

[0044] Reference Figure 1-Figure 6 , a reliability evaluation device for an optical fiber sensor network, which is basically the same as Example 2, and further, a heater 105 is installed in the air storage chamber 102, and the air storage chamber 102 is connected to the inside of the test box 1 through a vent 106, and the vent 106 is provided with a plurality of vents, and a second solenoid valve is installed in the vent 106. When it is necessary to test and evaluate the reliability of the optical fiber sensor network line 503, in order to simulate the stability of the network transmission of the optical fiber sensor network line 503 at different temperatures, this When gas is delivered to the gas storage chamber 102 through the air pump 104, the heater 105 can be started, and the heater 105 can heat the gas delivered into the gas storage chamber 102 by the air pump 104. When the gas enters the test box 1 through the vent 106, the temperature in the test box 1 can be increased, so as to utilize the principle of thermal expansion of the optical fiber sensing network line 503 to change the physical state of the optical fiber, and test its heat resistance, so as to facilitate the evaluation of the reliability of the performance of the optical fiber after being affected by temperature.

[0045] A water pipe connected to the air storage chamber 102 is provided on one side of the test box 1. A one-way valve is installed in the water pipe. The water outlet of the water pipe is located below the heater 105. When testing the reliability of the optical fiber sensing network line 503, water is first transported into the air storage chamber 102 through the water pipe, and the water level is located below the heater 105. When the air pump 104 transports gas into the air storage chamber 102, the gas will first pass into the water, thereby humidifying the gas. When the gas enters the test box 1 through the vent 106, the optical fiber sensing network line 503 and the connection between the optical fiber sensing network line 503 and the optical fiber adapter 504 can be tested for waterproofness, thereby facilitating a more comprehensive evaluation of the reliability of the optical fiber sensing network line 503.

[0046] Two sets of thermometers 108 are arranged on the front of the test box 1, and the detection ends of the two sets of thermometers 108 extend to the inside of the test box 1 and the inside of the air storage cavity 102 respectively. By arranging two sets of thermometers 108 connected to the inside of the test box 1 and the inside of the air storage cavity 102 respectively in the test box 1, the temperature in the air storage cavity 102 and the temperature inside the test box 1 can be monitored in real time, thereby facilitating the control of the optical fiber sensing network line 503 to operate within the specified temperature range, effectively ensuring the accuracy of data detection.

[0047] Embodiment 4:

[0048] Reference Figure 1-Figure 6 , a reliability assessment device for an optical fiber sensor network, which is basically the same as Example 3, and further, rollers 202 are symmetrically installed on the upper and lower sides of the T-shaped slider 201, and the rollers 202 roll against the inner wall of the T-shaped slide groove 103. By arranging rollers 202 on the upper and lower sides of the T-shaped slider 201, when the T-shaped slider 201 moves in the T-shaped slide groove 103, friction between the T-shaped slider 201 and the T-shaped slide groove 103 can be avoided, and when the optical fiber sensor network line 503 is pulled to drive the moving plate 2 to move, the T-shaped slider 201 is prevented from being stuck in the T-shaped slide groove 103, thereby affecting the detection accuracy of the dynamometer 301, and effectively ensuring the accuracy of the tensile strength detection of the optical fiber sensor network line 503.

[0049] A guide rod 303 is symmetrically fixedly connected to one side of the movable plate 2 away from the mounting box 5. The guide rod 303 is inserted into the test box 1. The guide rod 303 is located above the bolt 3. Through the setting of the guide rod 303, when the movable plate 2 moves, the movable plate 2 can move more smoothly, avoiding the movable plate 2 from tilting, and further ensuring the accuracy of the reliability evaluation of the optical fiber sensor network.

[0050] Embodiment 5:

[0051] Reference Figure 1-Figure 6, a reliability evaluation method for an optical fiber sensor network mainly includes the following steps: Step 1, selecting a test sample:

[0052] When a batch of optical fiber sensor network cables 503 are produced, one optical fiber sensor network cable 503 can be randomly selected from the batch to ensure the authenticity of the reliability evaluation result;

[0053] Step 2: Sample confirmation:

[0054] Perform an appearance inspection on the selected optical fiber sensor network cable 503 to check whether there is any damage, etc. If the sample is unqualified, repeat step 1 again, randomly select an optical fiber sensor network cable 503, and then re-confirm to ensure that the quality of the selected sample meets the requirements;

[0055] Step 3: Sample installation:

[0056] Install the network fiber optic modem 501 and the router 502 into the two installation boxes 5 respectively, then connect the fiber optic adapter 504 at one end of the fiber optic sensor network line 503 to the network fiber optic modem 501, and then insert the fiber optic sensor network into the through hole of the pull plate 403, and connect the fiber optic adapter 504 at the other end of the fiber optic sensor network line 503 to the router 502, and then the installation of the fiber optic sensor network line 503 can be completed;

[0057] Step 4: Network debugging:

[0058] The network fiber optic modem 501 and the router 502 are powered on, and then the network fiber optic modem 501 is connected to the external network interface, and then the network test equipment is connected to the router 502 for WLAN network connection to ensure that the fiber optic sensor network line 503 can perform normal network transmission;

[0059] Step 5: Optical fiber sensor network line 503 reliability assessment test:

[0060] The bolts 3 on both sides of the test box 1 are rotated so that the bolts 3 drive the two moving plates 2 to move away from each other to tension the optical fiber sensing network line 503, and then the dynamometer 301 is reset to zero, and then the air pump 104 can be started to transport gas to the air storage chamber 102. When the gas in the air storage chamber 102 reaches a certain air pressure value, the first solenoid valve in the air delivery pipe 107 can be opened. At this time, the gas in the air storage chamber 102 will instantly enter the cylinder 4 through the air delivery pipe 107, and then the piston rod 401 will overcome the tensioning force of the tensioning spring 402 under the push of the gas and move downward, and the piston rod 401 will pull the optical fiber sensing network line 503 downward through the pull plate 403, thereby passing through the mobile phone. The size of the network signal can be used to determine the stability of network transmission when the optical fiber sensing network cable 503 is subjected to an instantaneous pulling force, as well as the stability of the connection between the optical fiber sensing network cable 503 and the optical fiber adapter 504. As the pulling plate 403 continuously pulls the optical fiber sensing network cable 503 downward, the pulling force applied by the tension spring 302 to the tension meter 301 will continue to increase. When the optical fiber sensing network cable 503 breaks, the tension meter 301 will display the maximum tensile strength of the optical fiber sensing network cable 503, thereby detecting the tensile strength of the optical fiber sensing network cable 503. The reliability of the optical fiber sensing network cable 503 can be evaluated by combining multiple detection data to determine whether it meets the standards.

[0061] Based on step five, the staff will first rotate the bolts 3 on both sides of the test box 1 so that the bolts 3 pull the movable plate 2 through the tension spring 302, so that the two movable plates 2 move away from each other until the optical fiber sensing network line 503 is straightened, and then the tension of the dynamometer 301 can be reset to zero, and then the air pump 104 can be started, and the air pump 104 will deliver gas to the air storage chamber 102. When the air pressure value in the air storage chamber 102 reaches the specified value, the first solenoid valve can be opened at this time, and the gas in the air storage chamber 102 will quickly enter the cylinder 4 through the air supply pipe 107, and the piston rod 401 will overcome the tension of the tension spring 402 and move downward quickly under the push of the gas, and the piston rod 401 will cause the pulling plate 403 to quickly pull the optical fiber sensing network line 503 downward, thereby generating a momentary pulling force on the optical fiber sensing network line 503 , simulating the state of the fiber optic sensing network cable 503 being accidentally pulled, and then judging whether the stability of the network transmission meets the requirements when the fiber optic sensing network cable 503 is subjected to instantaneous pulling force through the network signal fluctuation on the network testing equipment, and whether the connection between the fiber optic sensing network cable 503 and the fiber optic adapter 504 is stable and reliable, and then continuing to deliver gas into the cylinder 4, the pull plate 403 will continuously push the fiber optic sensing network cable 503 downward, when the fiber optic sensing network cable 503 breaks or the fiber optic sensing network cable 503 is disconnected from the fiber optic adapter 504, the value displayed on the dynamometer 301 can be recorded at this time, so as to detect whether the tensile strength of the fiber optic sensing network cable 503 is reliable, and finally, combining the data of multiple tests can evaluate whether the reliability of the fiber optic sensing network cable 503 meets the standard.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above with a preferred embodiment, it is not used to limit the present invention.

Claims

1. A reliability assessment device for an optical fiber sensor network, used in a reliability assessment method for an optical fiber sensor network, characterized in that: The main steps are as follows: Step 1: Selecting a test sample: When a batch of optical fiber sensor network cables (503) is produced, a optical fiber sensor network cable (503) can be randomly selected from the batch to ensure the authenticity of the reliability evaluation result; Step 2, sample confirmation: Perform an appearance inspection on the selected optical fiber sensor network cable (503) to check whether there is any damage, etc. If the sample is unqualified, repeat step 1 again, randomly select an optical fiber sensor network cable (503), and then confirm again to ensure that the quality of the selected sample meets the requirements; Step 3, sample installation: install the network fiber optic modem (501) and the router (502) into two installation boxes (5) respectively, then connect the fiber optic adapter (504) at one end of the fiber optic sensor network line (503) to the network fiber optic modem (501), and then insert the fiber optic sensor network into the through-hole of the pull plate (403), and connect the fiber optic adapter (504) at the other end of the fiber optic sensor network line (503) to the router (502), and then complete the installation of the fiber optic sensor network line (503); Step 4, network debugging: power on the network fiber optic modem (501) and the router (502), then connect the network fiber optic modem (501) to the external network interface, and then connect the network test equipment to the router (502) for WLAN network connection to ensure the normal network transmission of the optical fiber sensor network line (503); Step 5, reliability evaluation test of optical fiber sensing network line (503): rotate the bolts (3) on both sides of the test box (1) so that the bolts (3) drive the two movable plates (2) to move away from each other to tighten the optical fiber sensing network line (503), and then reset the tension gauge (301), and then start the air pump (104) to deliver gas to the air storage chamber (102). When the gas in the air storage chamber (102) reaches a certain air pressure value, the first solenoid valve in the air supply pipe (107) can be opened. At this time, the gas in the air storage chamber (102) will instantly enter the cylinder (4) through the air supply pipe (107), and then the piston rod (401) will overcome the tensioning force of the tensioning spring (402) and move downward under the push of the gas, and the piston rod (401) will pass through the pull plate (403) to tighten the optical fiber sensing network. The cable (503) is pulled downward, so that the stability of network transmission when the optical fiber sensing network cable (503) is subjected to an instantaneous pulling force, as well as the stability effect of the connection between the optical fiber sensing network cable (503) and the optical fiber adapter (504) can be judged by the size of the network signal on the mobile phone. As the pulling plate (403) continuously pulls the optical fiber sensing network cable (503) downward, the tension applied by the tension spring (302) to the tension meter (301) will continue to increase. When the optical fiber sensing network cable (503) breaks, the tension meter (301) will display the maximum tensile strength of the optical fiber sensing network cable (503), so that the tensile strength of the optical fiber sensing network cable (503) can be detected, and the reliability of the optical fiber sensing network cable (503) can be evaluated by combining multiple detection data to determine whether it meets the standard; It also includes: two groups of symmetrically arranged T-shaped sliding blocks (201) which are slidably connected to two groups of T-shaped sliding grooves (103) opened inside the test box (1); Support legs (109) are fixedly mounted at four corners of the bottom of the test box (1); The movable plates (2) are symmetrically slidably connected in the test box (1), and the two movable plates (2) are respectively fixedly connected to an adjacent group of T-shaped sliding blocks (201); The installation box (5) is symmetrically fixedly connected to one side adjacent to the two movable plates (2); The bolt (3) is symmetrically connected to two sides of the test box (1) through threads, the tension gauge (301) is rotatably connected to one end of the bolt (3) close to the movable plate (2), and the two ends of the tension spring (302) are respectively fixedly connected to the tension gauge (301) and the movable plate (2); The air storage chamber (102) is arranged at the lower end of the interior of the test box (1), the air pump (104) is fixedly connected to the bottom of the test box (1), and the air outlet is connected to the air storage chamber (102); The cylinder (4) is fixedly connected to a position between the two movable plates (2) in the test box (1); the piston rod (401) with a piston is slidably connected to the cylinder (4); the tension spring (402) is arranged in the cylinder (4), and its two ends are respectively fixedly connected to the piston rod (401) and the lower end of the cylinder (4); the pull plate (403) is fixedly connected to the upper end of the piston rod (401); the air inlet of the cylinder (4) is connected to the air storage chamber (102) through an air supply pipe (107); and the first solenoid valve is arranged in the air supply pipe (107).

2. The reliability assessment device for an optical fiber sensor network according to claim 1, characterized in that: A plurality of the installation boxes (5) are provided and are fixedly connected to the movable plate (2) at equal intervals. A plurality of through openings are provided on the pull plate (403), and their positions match those of the installation boxes (5).

3. The reliability assessment device for an optical fiber sensor network according to claim 2, characterized in that: A plurality of the cylinders (4) are arranged at equal intervals, and the gas delivery pipe (107) is a multi-interface shunt pipe, and a plurality of gas outlets of the gas delivery pipe (107) are respectively connected to the gas inlets of the plurality of cylinders (4).

4. The reliability assessment device for an optical fiber sensor network according to claim 2, characterized in that: The upper opening of the test box (1) is symmetrically rotatably connected to two box covers (101) via hinges, and the box covers (101) are transparent plates.

5. The reliability assessment device for an optical fiber sensor network according to claim 4, characterized in that: A heater (105) is installed in the gas storage chamber (102), and the gas storage chamber (102) is connected to the inside of the test box (1) via a vent (106), a plurality of vents (106) are provided, and a second solenoid valve is installed in the vent (106).

6. The reliability assessment device for an optical fiber sensor network according to claim 5, characterized in that: A water pipe connected to the gas storage chamber (102) is provided on one side of the test box (1), a one-way valve is installed in the water pipe, and the water outlet of the water pipe is located below the heater (105).

7. The reliability assessment device for an optical fiber sensor network according to claim 5, characterized in that: Two sets of temperature gauges (108) are arranged on the front of the test box (1), and detection ends of the two sets of temperature gauges (108) extend into the interior of the test box (1) and the interior of the air storage cavity (102) respectively.

8. The reliability assessment device for an optical fiber sensor network according to claim 1, characterized in that: Rollers (202) are symmetrically mounted on both upper and lower sides of the T-shaped sliding block (201), and the rollers (202) roll against the inner wall of the T-shaped sliding groove (103).

9. The reliability assessment device for an optical fiber sensor network according to claim 8, characterized in that: A guide rod (303) is symmetrically fixedly connected to one side of the movable plate (2) away from the installation box (5); the guide rod (303) is inserted into the test box (1); and the guide rod (303) is located above the bolt (3).

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