CN218158364U - Optical fiber detection device - Google Patents
Optical fiber detection device Download PDFInfo
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- CN218158364U CN218158364U CN202222758799.3U CN202222758799U CN218158364U CN 218158364 U CN218158364 U CN 218158364U CN 202222758799 U CN202222758799 U CN 202222758799U CN 218158364 U CN218158364 U CN 218158364U
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Abstract
The utility model provides an optical fiber detection device, which belongs to the technical field of optical fiber detection, and comprises a PCM transmitter, a PCM receiver and optical fibers pre-embedded underground, wherein two sections of optical fibers adjacent to each other at the head and the tail in one path of optical fibers pre-embedded underground are connected through an optical fiber junction box, an uplink connecting pipe is arranged at the head end of a shell of the optical fiber junction box, and the uplink pre-embedded extending pipe extends to the earth surface and is communicated with an earth surface test pile; a downlink connecting pipe is arranged at the tail end of the optical fiber junction box shell; the upstream detection lead and the downstream detection lead are connected through a conductive connecting wire of a middle cavity of the optical fiber junction box; the cores of the upstream and downstream optical fibers are connected by fiber connectors in the cavity of the fiber optic junction box. The utility model discloses can pinpoint optic fibre trend, position, degree of depth to and optic fibre broken cable that external factor leads to in the use, can fix a position the disconnected cable position fast, convenient in time salvagees, and the guarantee communication is in time unblocked, reaches the transmission of important data. Reduce a large amount of manpower and materials, effectively improve operating mass with rated load.
Description
Technical Field
The utility model belongs to the technical field of the fiber detection technique and specifically relates to an optical fiber detection device.
Background
Generally, optical fibers are mostly buried underground due to the arrangement of long-distance transmission, and the maintenance of the optical fibers in the underground is inconvenient to some extent. The most traditional way is to perform disconnection detection after excavation. At present, no more convenient instrument and equipment can detect the position, the depth, the trend and the breakpoint of the signal transmission optical fiber. Therefore, a breakthrough is urgently needed in the aspect of long-distance flaw detection of optical fibers.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is to solve the not enough of prior art, provide an optical fiber detection device.
The technical scheme of the utility model is realized in the following way, the optical fiber detection device of the utility model structurally comprises a PCM transmitter, a PCM receiver and optical fibers which are pre-embedded underground,
the optical fiber junction box comprises an optical fiber junction box, an optical fiber connector, a power supply and a power supply, wherein two adjacent optical fibers, one end of the power supply and the other end of the power supply are embedded in one path of optical fiber underground;
an upstream binding post is arranged at the upper part of the inner cavity of the optical fiber junction box, and a downstream binding post is arranged at the lower part of the inner cavity of the optical fiber junction box;
an uplink connecting pipe is arranged at the head end of the shell of the optical fiber junction box and is communicated with an uplink embedded extension pipe, and the uplink embedded extension pipe extends to the ground surface and is communicated with a ground surface test pile;
a downlink connecting pipe is arranged at the tail end of the shell of the optical fiber junction box and is communicated with the downlink embedded extension pipe;
an upstream core support steel wire stripped from the tail end of the upstream optical fiber is connected to an upstream binding post, an upstream detection wire penetrates from the upstream binding post, passes through an upstream connecting pipe cavity and an upstream embedded extension pipe cavity and extends to an earth surface test pile, and the tail end of the upstream detection wire extends out of the earth surface test pile;
the upstream wire core supporting steel wire and the upstream detection wire are connected with the upstream binding post;
a downstream wire core supporting steel wire stripped from the downstream optical fiber head end is connected to a downstream binding post, and a downstream detection wire penetrates from the downstream binding post, passes through the downstream connecting pipe cavity and the downstream embedded extension pipe cavity, and extends downwards to the underground connection grounding embedded part from the tail end of the downstream embedded extension pipe;
the downstream wire core supporting steel wire and the downstream detection wire are connected with the downstream wiring terminal;
the upstream detection lead and the downstream detection lead are connected through a conductive connecting wire of a middle cavity of the optical fiber junction box;
the fiber cores of the upstream optical fiber and the downstream optical fiber are connected through an optical fiber connector in a middle cavity of the optical fiber junction box;
the earth surface is provided with a PCM transmitter and a PCM receiver;
the positive pole of the PCM transmitter is selectively connected with an upstream detection lead exposed out of an earth surface test pile;
the negative pole of the PCM transmitter is connected with a ground nail, and the ground nail is nailed into the ground around the ground surface test pile;
the PCM receiver is selectively landed on the ground surface along the direction of the optical fiber;
the PCM receiver is electrically connected with the detection A-shaped frame, and the detection A-shaped frame is inserted into the ground at the detected position.
The upstream wire core supporting steel wire and the downstream wire core supporting steel wire are all wire bodies with insulating outer cladding layers.
The upstream detection lead, the downstream detection lead and the conductive connecting wire are all wire bodies with insulating outer cladding layers.
The optical fiber junction box shell adopts an insulator, and the surface of the insulator is coated with an electromagnetic shielding coating.
Compared with the prior art, the utility model produced beneficial effect is:
the utility model discloses an optical fiber detection device can pinpoint optic fibre trend, position, degree of depth to and the disconnected cable that optic fibre external factor leads to in the use, can fix a position the disconnected cable position fast through this device, convenient in time salvagees, and the guarantee communication is in time unblocked, and important data transmission. Reduce a large amount of manpower and materials, effectively improve operating mass with rated load.
The utility model discloses specific position, trend, degree of depth, breakpoint of measurable quantity optic fibre.
The utility model discloses an optical fiber detection device reasonable in design, simple structure, safe and reliable, convenient to use, easy to maintain have fine using value widely.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the connection structure of the optical fiber junction box of the present invention.
The reference numerals in the drawings denote:
1. upstream optical fiber, 2, downstream optical fiber, 3, surface,
4. an optical fiber junction box is provided,
5. an upstream optical fiber access tube 6, an upstream binding post 7, a downstream binding post,
8. an ascending connecting pipe, 9, an ascending embedded extension pipe, 10, an earth surface test pile,
11. a downlink connecting pipe 12, a downlink embedded extension pipe,
13. an upstream core support wire, 14, an upstream sense wire,
15. a downstream wire core supporting steel wire, 16, a downstream detection lead,
17. the ground-engaging embedded part is arranged on the ground-engaging embedded part,
18. a conductive connection line for electrically connecting the conductive terminals,
19. an optical fiber connector is provided with a plurality of optical fiber connectors,
20. PCM transmitter, 21, PCM receiver, 22, anode, 23, cathode, 24, ground pin, 25, detection A-shaped frame,
26. an insulating outer cladding, 27, an electromagnetic shielding coating,
28. and a downstream optical fiber access tube.
Detailed Description
The following detailed description of an optical fiber detection device according to the present invention is made with reference to the accompanying drawings.
As shown in the attached drawings, the structure of the optical fiber detection device of the utility model comprises a PCM transmitter 20, a PCM receiver 21 and an optical fiber pre-buried underground,
every head and tail adjacent two sections of optical fibers in one path of optical fibers embedded underground are connected through an optical fiber junction box 4, an upstream optical fiber access pipe 5 is arranged on an upstream end shell of the optical fiber junction box 4, and the tail end of an upstream optical fiber 1 penetrates through the upstream optical fiber access pipe 5 and extends to the head end of an inner cavity of the optical fiber junction box 4;
a downstream optical fiber access pipe 28 is arranged on the downstream end shell of the optical fiber junction box 4, and the upstream head end of the downstream optical fiber 2 is accessed into the optical fiber junction box 4 from the downstream optical fiber access pipe 28;
the whole optical fiber is connected in sequence from upstream to downstream by each optical fiber and the optical fiber junction box 4 between the sections;
an upstream binding post 6 is arranged at the upper part of the inner cavity of the optical fiber junction box 4, and a downstream binding post 7 is arranged at the lower part of the inner cavity of the optical fiber junction box;
an uplink connecting pipe 8 is arranged at the head end of the shell of the optical fiber junction box 4, the uplink connecting pipe 8 is communicated with an uplink embedded extension pipe 9, and the uplink embedded extension pipe 9 extends to the ground surface and is communicated with a ground surface test pile 10;
a downlink connecting pipe 11 is arranged at the tail end of the shell of the optical fiber junction box 4, and the downlink connecting pipe 11 is communicated with a downlink embedded extension pipe 12;
an upstream core supporting steel wire 13 stripped from the tail end of the upstream optical fiber 1 is connected to the upstream binding post 6, an upstream detection lead 14 penetrates from the upstream binding post 6, passes through a tube cavity of the upstream adapter tube 8 and a tube cavity of the upstream embedded extension tube 9 and extends to the surface test pile 10, and the tail end of the upstream detection lead 14 extends out of the surface test pile 10 and extends by at least 10 cm;
the upstream wire core supporting steel wire 13 and the upstream detection lead 14 are in conductive lap joint at the upstream binding post 6;
a downstream core support steel wire 15 stripped from the head end of the downstream optical fiber 2 is connected to the downstream binding post 7, and a downstream detection wire 16 penetrates from the downstream binding post 7, passes through the tube cavity of the downstream connecting tube 11 and the tube cavity of the downstream embedded extension tube 12, and extends downwards to an underground connection grounding embedded part 17 from the tail end of the downstream embedded extension tube 12;
the downstream wire core supporting steel wire 15 and the downstream detection lead 16 are in conductive lap joint at the downstream wiring terminal 7;
the upstream sensing lead 14 and the downstream sensing lead 16 are connected by an electrically conductive connecting wire 18 of the cavity in the fiber optic junction box 4;
the cores of the upstream optical fiber 1 and the downstream optical fiber 2 are connected through an optical fiber connector 19 in a cavity of the optical fiber junction box 4;
a PCM transmitter 20 and a PCM receiver 21 are arranged above the earth surface 3;
the positive pole of the PCM transmitter 20 is selectively connected with an exposed upstream detection lead 14 on the earth surface test pile 10; the position is used as the starting end of one detection;
the negative pole of the PCM transmitter 20 is connected with a ground nail 24, and the ground nail 24 is nailed into the ground around the ground surface test pile 10;
the PCM receiver 21 is electrically connected to the probing a-frame 25, which probes the earth ground where the a-frame 25 is inserted into the selected terminal.
The upstream wire core supporting steel wire 13 and the downstream wire core supporting steel wire 15 both adopt an electric wire body with an insulating outer cladding layer.
The upstream detection lead 14, the downstream detection lead 16 and the conductive connecting line 18 are all electric lead bodies with insulating outer coatings.
The optical fiber junction box 4 is made of an insulator, and the surface of the insulator is coated with an electromagnetic shielding coating and an anti-corrosion coating.
The PCM transmitter 20 and the PCM receiver 21 can adopt a DM Rady transmitter and a DM Rady receiver which are matched in work.
The utility model discloses an optical fiber detection device's structural design principle is: the wire core supporting steel wires of the upstream optical fibers and the downstream optical fibers in the optical fiber junction box for each optical fiber transmission are connected, two conductive wires with external insulation coatings are led out, namely the upstream detection wire and the downstream detection wire where the optical fiber junction box is located, the two conductive wires are reliably connected with the wire core supporting steel wires, and wires are exposed at the positions of 10cm at two ends of each conductive wire, so that the connection and the ground conduction are facilitated during measurement. If the two core supporting steel wires in the optical fiber splice box are not connected, PCM detection current cannot be transmitted, and only a single section of optical fiber can be measured; if spliced, an effective splice length of 3-5km of optical fiber can be measured. And (3) operation after connection: one detection lead is led to the ground and enters the test pile for measurement, when the position, the depth and the direction of the optical fiber need to be measured, the positive electrode of the DM Leidi transmitter is connected with the exposed upstream detection lead of the ground surface test pile, and the negative electrode of the DM Leidi transmitter is connected with a ground nail and is connected to the ground; the positive electrode is a wire core supporting steel wire which is output by a transmitter and enters the middle of the optical fiber through an upstream detection wire. The other downstream detection lead is buried underground and used for grounding to discharge anode current, forms a loop with a transmitter cathode ground wire, cannot apply the transmitter current if the loop cannot be formed, cannot perform various measurements, only after reliable grounding, the anode output is led into the ground, the cathode receives the anode current through the ground and then transmits the anode current to the transmitter, and the transmitter can perform normal measurement by matching with a DM Raidi receiver.
The utility model discloses a theory of operation: the DM Raddie transmitter is connected with an upstream detection lead, 640Hz ultralow frequency output alternating current is selected by the transmitter, is applied to a wire core supporting steel wire in the middle of an optical fiber, and is led into the ground by a grounding wire to form a loop.
Position depth and orientation: the current output by the transmitter ceaselessly flows in the wire core supporting steel wire in the middle of the optical fiber, the current flowing in the steel wire generates an electromagnetic field, the electromagnetic field radiates to the ground, a coil is arranged in the receiver, the coil cuts the electromagnetic field on the ground to generate secondary induced current, the position where the secondary current exists is the position of the optical fiber, the receiver where the secondary induced current does not exist judges that the optical fiber does not exist underground if the receiver cannot receive signals, the induced current of the optical fiber can be displayed on a screen of the receiver, the burial depth of the optical fiber to the ground is calculated according to the strength of the electromagnetic field, and the direction of the magnetic field can be indicated, so that the trend of the optical fiber is displayed. The operator is required to track the signal of the electromagnetic field on the ground by holding the receiver by hand, so that the trend and the buried depth of the optical fiber can be found.
Breakpoint analysis: the transmitter needs to be adjusted to a frequency mixing mode of 3Hz +6Hz +640Hz, the receiver is used for connecting and detecting a frame A to measure a damaged point, the frame A is detected to be inserted into the ground, the potential gradient difference between two points in the ground is measured, current leaks into the ground at the position where the surface of the optical fiber is damaged, the potential difference between the two points of the frame A is detected to be larger at the position where the current leaks, and the potential difference between the two points is measured by using the frame A to judge the position of the damaged point of the outer surface of the optical fiber. Through surveying A style of calligraphy connecting wire and passing current numerical value to the receiver on showing, the transmitter is carried back to during the operation, shows on the receiver that there is not damaged point current numerical value can attenuate gradually, when damaged point appears in the place ahead, numerical value can crescent, and green arrow point guides forward simultaneously, and current numerical value can attenuate suddenly when crossing damaged point, and red arrow point guides backward simultaneously, can confirm the concrete position of damaged point.
Claims (4)
1. An optical fiber detection device is characterized by comprising a PCM transmitter, a PCM receiver and an optical fiber pre-embedded underground,
the optical fiber junction box comprises an optical fiber junction box, an optical fiber connector, a power supply and a power supply, wherein two adjacent optical fibers, one end of the power supply and the other end of the power supply are embedded in one path of optical fiber underground;
an upstream binding post is arranged at the upper part of the inner cavity of the optical fiber junction box, and a downstream binding post is arranged at the lower part of the inner cavity of the optical fiber junction box;
an uplink connecting pipe is arranged at the head end of the shell of the optical fiber junction box and is communicated with an uplink embedded extension pipe, and the uplink embedded extension pipe extends to the ground surface and is communicated with a ground surface test pile;
a downlink connecting pipe is arranged at the tail end of the shell of the optical fiber junction box and is communicated with the downlink embedded extension pipe;
an upstream wire core supporting steel wire stripped from the tail end of the upstream optical fiber is connected to an upstream binding post, an upstream detection wire penetrates from the upstream binding post, passes through an upstream connecting pipe cavity and an upstream embedded extension pipe cavity and extends to an earth surface test pile, and the tail end of the upstream detection wire stretches out of the earth surface test pile;
the upstream wire core supporting steel wire and the upstream detection wire are connected with the upstream binding post;
a downstream wire core supporting steel wire stripped from the downstream optical fiber head end is connected to a downstream binding post, and a downstream detection wire penetrates from the downstream binding post, passes through the downstream connecting pipe cavity and the downstream embedded extension pipe cavity, and extends downwards to the underground connection grounding embedded part from the tail end of the downstream embedded extension pipe;
the downstream wire core supporting steel wire and the downstream detection wire are connected with the downstream wiring terminal;
the upstream detection lead and the downstream detection lead are connected through a conductive connecting wire of a middle cavity of the optical fiber junction box;
the fiber cores of the upstream optical fiber and the downstream optical fiber are connected through an optical fiber connector in a middle cavity of the optical fiber junction box;
the earth surface is provided with a PCM transmitter and a PCM receiver;
the positive electrode of the PCM transmitter is selectively connected with an upstream detection lead exposed on an earth surface test pile;
the negative pole of the PCM transmitter is connected with a ground nail which is nailed into the ground around the ground surface test pile;
the PCM receiver is selectively landed on the ground along the direction of the optical fiber;
the PCM receiver is electrically connected with the detection A-shaped frame, and the detection A-shaped frame is inserted into the ground at the detected position.
2. An optical fiber testing device according to claim 1, wherein:
the upstream wire core supporting steel wire and the downstream wire core supporting steel wire are all wire bodies with insulating outer cladding layers.
3. An optical fiber testing device according to claim 1, wherein:
the upstream detection lead, the downstream detection lead and the conductive connecting wire are all wire bodies with insulating outer cladding layers.
4. An optical fiber testing device according to claim 1, wherein:
the optical fiber junction box shell adopts an insulator, and the surface of the shell is coated with an electromagnetic shielding coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758799.3U CN218158364U (en) | 2022-10-19 | 2022-10-19 | Optical fiber detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758799.3U CN218158364U (en) | 2022-10-19 | 2022-10-19 | Optical fiber detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218158364U true CN218158364U (en) | 2022-12-27 |
Family
ID=84570481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222758799.3U Active CN218158364U (en) | 2022-10-19 | 2022-10-19 | Optical fiber detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218158364U (en) |
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2022
- 2022-10-19 CN CN202222758799.3U patent/CN218158364U/en active Active
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