Auxiliary equipment for measuring coiling length of optical cable

Abstract

The utility model discloses an auxiliary device for measuring the coiling length of an optical cable, which comprises an optical cable vibration detection module and a mobile terminal module, the optical cable vibration detection module comprises a vibration detection shell, the lower end face of the vibration detection shell is fixedly provided with a support base, and the support base is fixedly provided with an optical cable. A first display screen is fixedly arranged on the front end face of the vibration detection shell, an optical cable connecting port is fixedly installed on one side of the vibration detection shell, and a wire winding frame is installed on one side of the optical cable connecting port. When an optical fiber laying area is manually knocked by adopting a backward Rayleigh scattering technology, the optical fiber is vibrated and enables two optical pulses in the optical fiber to generate a phase difference, the length of the coiled optical cable can be calculated according to the distance of the phase difference with the same intensity, and the optical cable can be coiled without digging the ground, opening a well lid and climbing an overhead rod. And the length of the coiled optical cable can be easily tested, and the knocking force and the knocking frequency can be monitored and displayed, so that corresponding adjustment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication testing, in particular to an auxiliary device for measuring the coiled length of an optical cable. Background Technique

[0002] OTDR is an optical time domain reflectometer. OTDR is a precise optoelectronic integrated instrument made by using the backscattering generated by Rayleigh scattering and Fresnel reflection when light travels in an optical fiber. It is widely used in the maintenance and construction of optical cable lines and can measure the length, attenuation, connector attenuation, etc. of optical fibers. The OTDR technology can accurately measure the length of an optical cable.

[0003] In the existing optical cable laying, a certain length of the optical cable is often coiled under the overhead pole or manhole cover. It is impossible for manual workers to directly measure the coiled length of the optical cable. Using the OTDR technology, it is impossible to accurately measure the coiled length of the optical cable at a specific position. Moreover, when using the backscattering Rayleigh scattering technology for manual tapping, the tapping force and frequency cannot be controlled. Therefore, it does not meet the existing requirements. For this reason, we propose an auxiliary device for measuring the coiled length of an optical cable. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary device for measuring the coiled length of an optical cable, so as to solve the problem that in the existing optical cable laying, a certain length of the optical cable is often coiled under the overhead pole or manhole cover, it is impossible for manual workers to directly measure the coiled length of the optical cable, using the OTDR technology, it is impossible to accurately measure the coiled length of the optical cable at a specific position, and when using the backscattering Rayleigh scattering technology for manual tapping, the tapping force and frequency cannot be controlled as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an auxiliary device for measuring the coiled length of an optical cable, including an optical cable vibration detection module and a mobile terminal module. The optical cable vibration detection module includes a vibration detection housing. A support base is fixedly installed on the lower end surface of the vibration detection housing. A first display screen is fixedly arranged on the front end surface of the vibration detection housing. An optical cable connection port is fixedly installed on one side of the vibration detection housing. A wire reel is installed on one side of the optical cable connection port. A power connection box is installed inside the vibration detection housing.

[0006] The mobile terminal module includes a terminal housing. A movable cover is rotatably connected to one side of the terminal housing. A sealing cover is fixedly installed on the upper end of the terminal housing. A second display screen is arranged on the upper end surface of the sealing cover. A device installation box is installed inside the sealing cover.

[0007] The inner side of the terminal housing is equipped with a remote tapping component module, and 4G / 5G wireless communication modules are provided at the upper end of the vibration detection housing and inside the device installation box.

[0008] Preferably, a laser, an FPGA, an APD, and an ARM are fixedly installed inside the power connection box, and the laser, FPGA, APD, and ARM are electrically connected.

[0009] Preferably, an optical cable is snap-fitted inside the optical cable connection port, the optical cable is connected to the power connection box through the optical cable connection port, the laser generates optical pulses inside the optical cable, and the laser is controlled by the FPGA.

[0010] Preferably, the remote tapping component module includes a hammer handle, a hammer head is fixedly installed at the bottom end of the hammer handle, a pressure sensor is provided inside the bottom end of the hammer handle, and an anti-slip sleeve is provided on the outer side of the upper end of the hammer handle.

[0011] Preferably, the hammer head is snap-fitted and installed with the terminal housing, the upper end of the hammer handle is adhesively fixed to the anti-slip sleeve, the bottom end of the pressure sensor penetrates through the hammer handle and is in contact with the hammer head, and the pressure sensor is connected to the 4G / 5G wireless communication module provided inside the device installation box through a wire.

[0012] Preferably, the optical cable vibration detection module and the mobile terminal module are wirelessly connected through two 4G / 5G wireless communication modules, and the first display screen and the second display screen are electrically connected to both 4G / 5G wireless communication modules.

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

[0014] 1. The present utility model controls a laser to generate optical pulses inside the optical cable to be tested through the FPGA inside the power connection box. When the artificial tapping is performed on the optical fiber laying area by adopting the backward Rayleigh scattering technology, the optical fiber is vibrated and causes a phase difference between the two optical pulses inside. The sound wave generated by tapping at a fixed frequency causes the strain to change the optical phase. The mobile terminal module collects multiple times and then compares and analyzes the curve of the signal intensity and time with the threshold signal, so as to analyze the tapping sound curve. Furthermore, when the tapping sound appears within the same range, the difference between the vibration starting point and the ending point is calculated through an algorithm and displayed, so as to detect and display the position and length of the coiled optical fiber. By not digging the ground, not opening the manhole cover, and not climbing the overhead pole, the length of the coiled optical cable can be easily tested;

[0015] 2. The utility model can perform wireless communication on the optical cable vibration detection module and the mobile terminal module through the 4G / 5G wireless communication module, enabling the mobile terminal module to receive and display the data detected by the optical cable vibration detection module, and uploading the test results to the optical cable vibration detection module through the 4G / 5G wireless communication module to generate a final test report. When the hammer handle drives the hammer head to strike, the pressure sensor can monitor the striking force and frequency and display them on the second display screen, so as to effectively adjust the striking force and frequency, and avoid interference caused by external noise vibration through different striking frequencies. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the optical cable vibration detection module of the utility model;

[0017] Figure 2 It is a partial sectional structural diagram of the optical cable vibration detection module of the utility model;

[0018] Figure 3 It is a schematic structural diagram of the mobile terminal module of the utility model;

[0019] Figure 4 It is a sectional structural diagram of the remote striking component module of the utility model.

[0020] In the figure: 1. Optical cable vibration detection module; 101. Vibration detection housing; 102. Wire reel; 103. Optical cable connection port; 104. First display screen; 105. Support base; 106. Power connection box; 107. Laser; 108. FPGA; 109. APD; 110. ARM; 2. Mobile terminal module; 201. Terminal housing; 202. Movable cover plate; 203. Sealing cover; 204. Second display screen; 205. Device installation box; 3. Remote striking component module; 301. Hammer head; 302. Hammer handle; 303. Anti-slip sleeve; 304. Pressure sensor; 4. 4G / 5G wireless communication module. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figure 1 and Figure 2, An embodiment provided by the present utility model: An auxiliary device for measuring the coiled length of an optical cable, including an optical cable vibration detection module 1 and a mobile terminal module 2. The optical cable vibration detection module 1 includes a vibration detection housing 101. A support base 105 is fixedly installed on the lower end surface of the vibration detection housing 101. A first display screen 104 is fixedly provided on the front end surface of the vibration detection housing 101. An optical cable connection port 103 is fixedly installed on one side of the vibration detection housing 101. A wire winding rack 102 is installed on one side of the optical cable connection port 103. The wire winding rack 102 can wind the wires during the use of the optical cable vibration detection module 1;

[0023] An electricity connection box 106 is installed inside the vibration detection housing 101. A laser 107, an FPGA 108, an APD 109, and an ARM 110 are fixedly installed inside the electricity connection box 106. The laser 107, the FPGA 108, the APD 109, and the ARM 110 are electrically connected. An optical cable is clamped and provided inside the optical cable connection port 103. The optical cable is connected to the electricity connection box 106 through the optical cable connection port 103. The laser 107 generates optical pulses inside the optical cable. The laser 107 is controlled by the FPGA 108. The laser 107, the FPGA 108, the APD 109, and the ARM 110 can send test pulse width signals and receive the optical phase of the optical pulses when the optical fiber is knocked and vibrated.

[0024] Please refer to Figure 3 and Figure 4 , The mobile terminal module 2 includes a terminal housing 201. A movable sealing plate 202 is rotatably connected to one side of the terminal housing 201. A sealing cover 203 is fixedly installed on the upper end of the terminal housing 201. A second display screen 204 is provided on the upper end surface of the sealing cover 203. A device installation box 205 is installed inside the sealing cover 203. The mobile terminal module 2 is used to receive and display the data detected by the optical cable vibration detection module 1. On-site testers can perform debugging and confirmation based on the test data and upload the test results to the optical cable vibration detection module 1 to generate a final test report;

[0025] 4G / 5G wireless communication modules 4 are provided on the upper end of the vibration detection housing 101 and inside the device installation box 205. The optical cable vibration detection module 1 and the mobile terminal module 2 are wirelessly signal-connected through the two 4G / 5G wireless communication modules 4. The first display screen 104 and the second display screen 204 are both electrically connected to the two 4G / 5G wireless communication modules 4. The 4G / 5G wireless communication module 4 is used to transmit the waveform diagram detected by the optical cable vibration detection module 1 to the mobile terminal module 2 in real time, facilitating testers to view and mark the on-site test results.

[0026] Please refer to Figure 3 and Figure 4, a remote knocking component module 3 is installed inside the terminal housing 201. The remote knocking component module 3 includes a hammer handle 302, a hammer head 301 is fixedly installed at the bottom end of the hammer handle 302, a pressure sensor 304 is arranged inside the bottom end of the hammer handle 302, an anti-slip sleeve 303 is arranged outside the upper end of the hammer handle 302, the hammer head 301 is snap-fitted with the terminal housing 201, the upper end of the hammer handle 302 is fixedly bonded with the anti-slip sleeve 303, the bottom end of the pressure sensor 304 penetrates through the hammer handle 302 and is in close contact with the hammer head 301, and the pressure sensor 304 is connected to a 4G / 5G wireless communication module 4 arranged inside the device installation box 205 through a wire. The pressure sensor 304 can monitor the knocking force and knocking frequency and display them through the second display screen 204, so as to effectively adjust the knocking force and knocking frequency.

[0027] During use, when measuring the coiling length of the optical cable, the optical cable to be measured is inserted and installed with the optical cable connection port 103, the power is turned on, and the FPGA inside the power connection box 106 controls the laser to generate optical pulses inside the optical cable to be measured. The remote knocking component module 3 is taken out from the inside of the terminal housing 201 and knocked one by one along the ground along the laying route of the optical cable, the manhole cover of the optical cable pipe, and the overhead pole of the optical cable. When knocking, it can cause the optical cable to be measured to vibrate;

[0028] The optical cable vibration detection module 1 continuously sends frequency test signals. As the optical fiber phase changes with time, two optical pulses pass through the knocking area one after another, which will bring a phase difference. The sound wave generated by knocking at a fixed frequency causes strain to change the optical phase. After multiple acquisitions by the mobile terminal module 2, the curve of the signal intensity and time is compared and analyzed with the threshold signal, so as to analyze the knocking sound curve. Furthermore, when the knocking sound appears within the same range, the difference between the vibration start point and the end point is calculated through an algorithm and displayed, so as to detect and display the position and length of the coiled optical fiber;

[0029] The 4G / 5G wireless communication module 4 can perform wireless communication with the optical cable vibration detection module 1 and the mobile terminal module 2, enabling the mobile terminal module 2 to receive and display the data measured by the optical cable vibration detection module 1, so that the on-site testers can perform debugging and confirmation according to the test data, and use the 4G / 5G wireless communication module 4 to upload the test results to the optical cable vibration detection module 1 for generating a final test report. A pressure sensor 304 is arranged inside the bottom end of the hammer handle 302, and the pressure sensor 304 is electrically connected to the second display screen 204, so that when the hammer handle 302 drives the hammer head 301 to knock, the knocking force and knocking frequency can be monitored through the pressure sensor 304 and displayed through the second display screen 204, so as to effectively adjust the knocking force and knocking frequency, so as to avoid interference caused by external noise vibration through different knocking frequencies.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An auxiliary device for measuring the coiled length of an optical cable, comprising an optical cable vibration detection module (1) and a mobile terminal module (2), characterized in that: The optical cable vibration detection module (1) includes a vibration detection housing (101). A support base (105) is fixedly installed on the lower end face of the vibration detection housing (101). A first display screen (104) is fixedly provided on the front end face of the vibration detection housing (101). An optical cable connection port (103) is fixedly installed on one side of the vibration detection housing (101). A wire winding rack (102) is installed on one side of the optical cable connection port (103). A power connection box (106) is installed inside the vibration detection housing (101). The mobile terminal module (2) includes a terminal housing (201). A movable sealing plate (202) is rotatably connected to one side of the terminal housing (201). A sealing cover (203) is fixedly installed on the upper end of the terminal housing (201). A second display screen (204) is provided on the upper end face of the sealing cover (203). A device installation box (205) is installed inside the sealing cover (203). A remote knocking component module (3) is installed inside the terminal housing (201). 4G / 5G wireless communication modules (4) are provided on the upper end of the vibration detection housing (101) and inside the device installation box (205).

2. The auxiliary device for measuring the coiled length of an optical cable according to claim 1, wherein: A laser (107), an FPGA (108), an APD (109), and an ARM (110) are fixedly installed inside the power connection box (106). The laser (107), the FPGA (108), the APD (109), and the ARM (110) are electrically connected.

3. The auxiliary device for measuring the coiled length of an optical cable according to claim 2, characterized in that: An optical cable is clamped inside the optical cable connection port (103). The optical cable is connected to the power connection box (106) through the optical cable connection port (103). The laser (107) generates optical pulses inside the optical cable. The laser (107) is controlled by the FPGA (108).

4. An auxiliary device for measuring the coiled length of an optical cable according to claim 1, characterized in that: The remote knocking component module (3) includes a hammer handle (302). A hammer head (301) is fixedly installed at the bottom end of the hammer handle (302). A pressure sensor (304) is provided inside the bottom end of the hammer handle (302). An anti-slip sleeve (303) is provided on the outer side of the upper end of the hammer handle (302).

5. An auxiliary device for measuring the coiled length of an optical cable according to claim 4, characterized in that: The hammer head (301) is clamped and installed on the terminal housing (201). The upper end of the hammer handle (302) is fixedly adhered to the anti-slip sleeve (303). The bottom end of the pressure sensor (304) penetrates through the hammer handle (302) and is in close contact with the hammer head (301). The pressure sensor (304) is connected to the 4G / 5G wireless communication module (4) provided inside the device installation box (205) through a wire.

6. The auxiliary device for measuring the coiled length of an optical cable according to claim 1, characterized in that: The optical cable vibration detection module (1) and the mobile terminal module (2) are wirelessly connected through two 4G / 5G wireless communication modules (4). The first display screen (104) and the second display screen (204) are electrically connected to the two 4G / 5G wireless communication modules (4).

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