CN114323471A - Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method - Google Patents
Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method Download PDFInfo
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- CN114323471A CN114323471A CN202111473567.7A CN202111473567A CN114323471A CN 114323471 A CN114323471 A CN 114323471A CN 202111473567 A CN202111473567 A CN 202111473567A CN 114323471 A CN114323471 A CN 114323471A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 106
- 230000003287 optical effect Effects 0.000 title claims abstract description 100
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides an optical cable joint box sealing monitoring assembly, a monitoring system and a monitoring method, wherein the optical cable joint box sealing monitoring assembly comprises a barrel, a cover body which is detachably covered on the barrel, and a monitoring tail cable arranged in the barrel; the monitoring tail cable is used for monitoring whether water seepage and/or water seepage degree exists in the optical cable joint box. This optical cable joint box seals monitoring subassembly monitors the inside humidity of optical cable joint box through monitoring the tail cable to reach under the prerequisite of not opening the joint box, judge whether the phenomenon of intaking, penetrating damp appears in the joint box.
Description
Technical Field
The invention relates to the technical field of optical cable joint boxes, in particular to an optical cable joint box sealing monitoring assembly, an optical cable joint box sealing monitoring system and an optical cable joint box sealing monitoring method.
Background
The optical cable joint box is widely used as one of basic communication equipment for optical communication. Because the optical cable joint box is mostly arranged in outdoor open air, the environment is particularly severe, such as overhead environment solar radiation, low temperature, high temperature and rainwater erosion, and the sealing performance of the optical cable joint box can be affected; even if the cable connector box is placed in a pipeline environment, the sealing performance of the cable connector box can be affected by various chemical corrosion, dragging, pulling, smashing and the like in the construction process.
However, the current monitoring of the sealing performance of the optical cable joint box requires opening the box body to observe whether the phenomena of water seepage and moisture permeability exist, which is very inconvenient.
Disclosure of Invention
In order to solve the problems in the prior art, the invention mainly aims to provide an optical cable joint box sealing monitoring assembly, an optical cable joint box sealing monitoring system and an optical cable joint box sealing monitoring method.
To achieve the above object, according to a first aspect of the present invention, there is provided a cable closure seal monitoring assembly.
The optical cable joint box sealing monitoring assembly comprises a barrel, a cover body and a monitoring tail cable, wherein the cover body is detachably covered on the barrel; wherein the content of the first and second substances,
the monitoring tail cable is used for monitoring whether water seepage and/or water seepage degree exists in the optical cable joint box.
Furthermore, the monitoring tail cable comprises a protective sleeve, an inserting end fixed at one end of the protective sleeve and a plurality of cable cores sleeved in the protective sleeve; the splicing end is electrically connected with the plurality of cable cores.
Furthermore, the plurality of cable cores at least comprise a group of cable cores used for monitoring whether water seepage exists in the optical cable joint box.
Furthermore, the plurality of cable cores further comprise a group of cable cores for monitoring the water seepage degree in the optical cable joint box.
Furthermore, a sealing cap is arranged between the inserting end and the cover body;
preferably, a sealing ring is arranged at the end part of the protective sleeve, and the sealing cap is in sealing and abutting connection with the sealing ring.
Furthermore, a plurality of clamping grooves are formed in one end of the barrel along the circumferential direction of the barrel, and a plurality of clamping blocks clamped with the clamping grooves are arranged on the protective sleeve;
and one end of the cylinder body, which is opposite to the clamping groove, is provided with a supporting leg.
The cable connector further comprises two fixing parts, wherein each fixing part is used for fixing one cable core, and the two fixing parts are arranged on the cable connector box;
preferably, the distance between the two fixing parts is less than or equal to 20 mm.
Furthermore, the fixing part comprises a cylindrical shell and a fixing column embedded into the cylindrical shell, and one end of the fixing column is provided with a fixing hole for fixing the cable core.
To achieve the above object, according to a second aspect of the present invention, there is provided a cable closure seal monitoring system.
This optical cable joint box seals monitoring system includes check out test set and foretell optical cable joint box seals monitoring subassembly, wherein:
the monitoring tail cable is respectively connected with the detection equipment and the optical cable joint box, and the monitoring tail cable is detachably connected with the detection equipment.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a monitoring method.
The monitoring method based on the optical cable joint box sealing monitoring system comprises the following steps:
connecting the splicing end head with detection equipment;
when water enters the optical cable joint box, a group of cable core circuits for monitoring whether water seeps in the optical cable joint box are conducted to form a first electrical switching signal;
when the water inflow in the optical cable joint box reaches 1/3-2/3 of the volume of the optical cable joint box, a group of cable core circuits for monitoring the water seepage degree in the optical cable joint box are conducted to form a second electrical switching signal;
when the water inflow in the optical cable joint box is larger than 2/3 of the volume of the optical cable joint box, a group of cable core circuits for monitoring the water seepage degree in the optical cable joint box are conducted to form a third electrical switching signal.
In the invention, the monitoring tail cable can be used for monitoring whether water seeps in the optical cable joint box, and as long as water seeps in the optical cable joint box, the cable core group circuit for monitoring whether water seeps in the optical cable joint box is conducted; the cable core group circuit can also be used for monitoring the water seepage degree in the optical cable joint box, and when the water seepage in the optical cable joint box reaches a certain degree, the cable core group circuit for monitoring the water seepage degree in the optical cable joint box is conducted.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of the overall configuration of a cable closure seal monitoring assembly in an embodiment of the present invention;
FIG. 2 is an exploded view of a cable closure seal monitoring assembly in accordance with an embodiment of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a cable closure seal monitoring assembly in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a monitoring pigtail cable according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a cartridge in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a fixing member according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the optical cable joint box in which the first cable core and the second cable core are respectively connected through the fixing component in the embodiment of the present invention.
In the figure:
1. a barrel; 2. a cover body; 3. monitoring a tail cable; 4. a protective sleeve; 5. inserting an end socket; 6. a cable core; 7. a first cable core; 8. a second cable core; 9. a sealing cap; 10. a card slot; 11. a clamping block; 12. supporting legs; 13. a fixing member; 14. a cylindrical housing; 15. fixing a column; 16. an optical cable splice closure.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1 to 6, the present invention provides a cable closure seal monitoring assembly, which includes a barrel 1, wherein two ends of the barrel 1 are open and a receiving space is formed inside the barrel 1; the optical cable joint box sealing monitoring assembly also comprises a cover body 2 which is detachably covered on the cylinder body 1 and a monitoring tail cable 3 which is arranged in the cylinder body 1; wherein the monitoring pigtail cable 3 is used for monitoring whether water seepage and/or water seepage degree exists in the optical cable splice closure.
In the above embodiment, the monitoring tail cable 3 is placed in the accommodating space of the barrel 1, and after the cover body 2 is screwed down, the barrel 1 and the cover body 2 play a role in physical protection of the monitoring tail cable 3; wherein, monitoring tail cable 3 includes a plurality of cable cores 6, for example cable core 6 can be 2, 4 or 6, include at least in a plurality of cable cores 6 that a set of cable core 6 that is used for monitoring whether water seepage in the optical cable joint box, certainly can also include a set of cable core 6 that is used for monitoring water seepage degree in the optical cable joint box. When the cable is used specifically, two ends of the cable core 6 are respectively connected with the detection equipment and the optical cable joint box 16, and as long as water seepage exists in the optical cable joint box 16, the detection equipment forms a first electrical switching signal; when the cable closure 16 is saturated with water to a certain extent, the test device generates a second electrical switching signal or a third electrical switching signal.
As shown in fig. 4, the monitoring pigtail cable 3 includes a protective sheath 4, an insertion end 5 fixed at one end of the protective sheath 4, and a plurality of cable cores 6 sleeved in the protective sheath 4, wherein the insertion end 5 is electrically connected to the plurality of cable cores 6, and one end of the plurality of cable cores 6 opposite to the insertion end 5 is connected to an optical cable connector box 16.
As an embodiment of the invention, the plurality of cable cores 6 at least comprises a group of cable cores 6 for monitoring whether water is seeped in the optical cable joint box.
For example, the monitoring tail cable 3 adopts 6 cable cores 6, namely a first cable core 7, a second cable core 8, a third cable core, a fourth cable core, a fifth cable core and a sixth cable core in sequence; the first cable core 7 and the second cable core 8 are used for monitoring whether water seepage occurs in the optical cable joint box or not; the first cable core 7 is respectively connected with the optical cable joint box 16 and the splicing end 5, the second cable core 8 is respectively connected with the optical cable joint box 16 and the splicing end 5, when water seepage occurs in the optical cable joint box 16, circuits of the first cable core 7 and the second cable core 8 are conducted, and therefore a first electrical signal is detected through the detection equipment.
As another embodiment of the invention, the plurality of cable cores 6 further comprises a group of cable cores 6 for monitoring the water seepage degree in the optical cable joint box.
For example, the monitoring tail cable 3 adopts 6 cable cores 6, wherein the first cable core 7 and the second cable core 8 are used for monitoring whether water seepage exists in the optical cable joint box; the third cable core, the fourth cable core, the fifth cable core and the sixth cable core are used for monitoring the water seepage degree in the optical cable joint box; specifically, when a small amount of water seeps into the optical cable joint box 6, the circuits of the third cable core and the fifth cable core are conducted; and when a large amount of water seepage exists in the optical cable joint box 6, the circuits of the fourth cable core and the sixth cable core are conducted.
Furthermore, one end of the fourth cable core is connected with the splicing end 5, and the other end of the fourth cable core is connected with the metal outer sheath of the optical cable A in the optical cable joint box; one end of the sixth cable core is connected with the splicing end 5, and the other end of the sixth cable core is connected with the metal outer sheath of the optical cable B in the optical cable joint box; one end of the third cable core is connected with the splicing end 5, and the other end of the third cable core is connected with the metal reinforcing core of the optical cable A in the optical cable joint box; one end of the fifth cable core is connected with the splicing end 5, and the other end of the fifth cable core is connected with the metal reinforcing core of the optical cable B in the optical cable joint box.
The first cable core 7 and the second cable core 8 are used for monitoring whether water seepage occurs in the optical cable joint box 16, namely when the water seepage occurs, the circuits of the first cable core 7 and the second cable core 8 are conducted to form a first electric signal;
the third cable core and the fifth cable core are used for monitoring the water seepage degree in the optical cable joint box 16, and when the water inflow in the optical cable joint box 16 reaches 1/3-2/3 of the volume of the optical cable joint box, the circuits of the third cable core and the fifth cable core are conducted;
the fourth cable core and the sixth cable core are used for monitoring the water seepage degree in the optical cable joint box 16, and when the water inflow in the optical cable joint box 16 is larger than 2/3 of the volume of the optical cable joint box, the fourth cable core and the sixth cable core are conducted.
As shown in fig. 2 and 3, the optical cable joint closure sealing monitoring assembly further includes a sealing cap 9 disposed between the plug terminal 5 and the cover body 2, wherein the sealing cap 9 is disposed at an end of the protective cover 4 for sealing the plug terminal 5.
A seal ring (not shown) is further provided at an end of the boot 4, and the seal cap 9 is in sealing contact with the seal ring.
Monitoring tail cable 3 adopts full seal structure, and the tip of lag 4 is equipped with the sealing washer (like the rubber circle), with the 9 lock backs of sealing cap, inside is sealed completely, plays waterproof dirt-proof effect.
As shown in fig. 5, one end of the cylinder 1 is provided with a plurality of clamping grooves 10 along the circumferential direction thereof, and the protecting sleeve 4 is provided with a plurality of clamping blocks clamped with the clamping grooves 10.
The end of the cylinder 1 opposite to the clamping groove 10 is provided with a supporting leg 12.
When the device is used, a part of the supporting leg 12 is embedded in the cement base, the cover body 2 adopts internal threads and is matched with external threads on the upper part of the barrel body 1, and after the device is screwed down, the device in the barrel body 1 can be physically protected.
As shown in fig. 7, the optical cable joint closure sealing and monitoring assembly further comprises two fixing parts 13, the two fixing parts 13 are respectively used for fixing the first cable core 7 and the second cable core 8, and the two fixing parts 13 are both arranged on the optical cable joint closure 16.
As shown in fig. 6, the fixing member 13 includes a cylindrical case 14 and a fixing post 15 embedded therein, and a fixing hole for fixing the first cable core 7 or the second cable core 8 is opened at one end of the fixing post 15.
In actual use, the first cable core 7 (green line) and the second cable core 8 (white line) are inserted into the fixing holes of the two fixing members 13, respectively, the electric wires are bent, and the fixing members 13 are fixed to the bottom of the cable closure 16.
In the embodiment of the present invention, the distance between the two fixing parts 13 is 20mm or less.
The present invention also provides a cable closure seal monitoring system comprising a detection device (not shown) and the cable closure seal monitoring assembly described above, wherein: the monitoring tail cable 3 is respectively connected with the detection equipment and the optical cable joint box 16, and the monitoring tail cable 3 is detachably connected with the detection equipment.
Specifically, the plugging end 5 is detachably connected with the detection equipment, and one end of the cable core 6, which is opposite to the plugging end 5, is connected with the cable joint box 16.
In the above embodiment, when the sealing performance of the cable joint box needs to be monitored, the cover body 2 covering the cylinder body 1 is firstly detached, and then the plugging end 5 is connected with the detection equipment. At this time, as long as water enters the optical cable joint box 16, the circuits of the first cable core 7 and the second cable core 8 are conducted to form a first electrical switching signal; if the water inflow in the optical cable joint box 16 reaches 1/3-2/3 of the volume of the optical cable joint box, the circuit of the third cable core and the circuit of the fifth cable core are conducted to form a second electrical switching signal; when the water inflow in the cable joint box 16 is greater than 2/3 of the volume of the cable joint box, the fourth cable core and the sixth cable core are conducted for forming a third electrical switching signal.
The invention provides a monitoring method based on the optical cable joint box sealing monitoring system, and the monitoring principle of the monitoring method is as follows: when the optical cable connector box is damaged in the using process and a small amount of water seeps inside the optical cable connector box, the internal resistance is reduced, only the first cable core and the second cable core are conducted, and the detection equipment detects a first electrical switching signal; when the internal water inflow reaches a certain degree, if the water inflow reaches 1/3-2/3 of the volume of the optical cable joint box, the circuits of the third cable core and the fifth cable core are conducted, and the detection equipment detects a second electrical switching signal; when the water quantity is close to and is full of the joint box, if the water quantity is greater than 2/3 of the volume of the optical cable joint box, the circuit of the fourth cable core and the circuit of the sixth cable core are conducted, and the detection equipment detects a third electric switch signal.
The sending of different electrical switch signals shows the degree of the water seepage in the cable joint box.
It is to be noted that the term "comprises" and any variations thereof in the description and claims of the present invention is intended to cover non-exclusive inclusions, such that the inclusion of a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not explicitly listed or inherent to such elements.
In the present invention, the terms "upper", "lower", "bottom", "top", "left", "right", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the description of "first," "second," etc. referred to in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The optical cable joint box sealing monitoring assembly is characterized by comprising a barrel, a cover body and a monitoring tail cable, wherein the cover body is detachably covered on the barrel; wherein the content of the first and second substances,
the monitoring tail cable is used for monitoring whether water seepage and/or water seepage degree exists in the optical cable joint box.
2. The cable closure seal monitoring assembly of claim 1, wherein the monitoring pigtail cable comprises a boot, a splicing tip secured to an end of the boot, and a plurality of cable cores sleeved within the boot; the splicing end is electrically connected with the plurality of cable cores.
3. The cable closure seal monitoring assembly of claim 2, wherein the plurality of cable cores includes at least one set of cable cores for monitoring for water penetration within the cable closure.
4. The cable closure seal monitoring assembly of claim 3, wherein the plurality of cable cores further comprises a plurality of cable cores for monitoring a water penetration level within the cable closure.
5. The cable closure seal monitoring assembly of claim 2, wherein a sealing cap is further disposed between the splicing end and the cover;
preferably, a sealing ring is arranged at the end part of the protective sleeve, and the sealing cap is in sealing and abutting connection with the sealing ring.
6. The optical cable splice closure seal monitoring assembly of claim 2, wherein a plurality of slots are disposed at one end of the barrel along a circumferential direction thereof, and a plurality of clips are disposed on the boot in engagement with the slots;
and one end of the cylinder body, which is opposite to the clamping groove, is provided with a supporting leg.
7. The cable closure seal monitoring assembly of claim 3, further comprising two securing members, each securing member for securing one of the cable cores, the two securing members each being disposed on the cable closure;
preferably, the distance between the two fixing parts is less than or equal to 20 mm.
8. The optical cable joint box seal monitoring assembly of claim 7, wherein the fixing member includes a cylindrical housing and a fixing post embedded therein, and one end of the fixing post is opened with a fixing hole for fixing the cable core.
9. A cable closure seal monitoring system comprising a detection device and a cable closure seal monitoring assembly according to any one of claims 1-8, wherein:
the monitoring tail cable is respectively connected with the detection equipment and the optical cable joint box, and the monitoring tail cable is detachably connected with the detection equipment.
10. A method of monitoring a cable closure seal monitoring system according to claim 9, comprising the steps of:
connecting the splicing end head with detection equipment;
when water enters the optical cable joint box, a group of cable core circuits for monitoring whether water seeps in the optical cable joint box are conducted to form a first electrical switching signal;
when the water inflow in the optical cable joint box reaches 1/3-2/3 of the volume of the optical cable joint box, a group of cable core circuits for monitoring the water seepage degree in the optical cable joint box are conducted to form a second electrical switching signal;
when the water inflow in the optical cable joint box is larger than 2/3 of the volume of the optical cable joint box, a group of cable core circuits for monitoring the water seepage degree in the optical cable joint box are conducted to form a third electrical switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111473567.7A CN114323471A (en) | 2021-11-29 | 2021-11-29 | Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111473567.7A CN114323471A (en) | 2021-11-29 | 2021-11-29 | Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method |
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| CN114323471A true CN114323471A (en) | 2022-04-12 |
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| CN202111473567.7A Pending CN114323471A (en) | 2021-11-29 | 2021-11-29 | Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009075348A (en) * | 2007-09-20 | 2009-04-09 | Nippon Tsushin Denzai Kk | Closure for optical cable connection |
| JP2010145329A (en) * | 2008-12-22 | 2010-07-01 | Suzuki Giken:Kk | Immersion detection sensor |
| JP2013092591A (en) * | 2011-10-25 | 2013-05-16 | Furukawa Electric Co Ltd:The | Closure, inspection method for permeation into closure, and closing stopper used for closure |
| CN211124745U (en) * | 2019-11-29 | 2020-07-28 | 胥兵 | Optical cable monument mark structure |
| CN113125126A (en) * | 2021-05-20 | 2021-07-16 | 李佑进 | Fault positioning photoelectric/electric monitoring cable |
| CN214095892U (en) * | 2021-01-07 | 2021-08-31 | 林其明 | Monitoring monument for detecting position of optical cable |
| CN216770916U (en) * | 2021-11-29 | 2022-06-17 | 江苏通鼎宽带有限公司 | Optical cable joint box sealing monitoring assembly and monitoring system |
-
2021
- 2021-11-29 CN CN202111473567.7A patent/CN114323471A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009075348A (en) * | 2007-09-20 | 2009-04-09 | Nippon Tsushin Denzai Kk | Closure for optical cable connection |
| JP2010145329A (en) * | 2008-12-22 | 2010-07-01 | Suzuki Giken:Kk | Immersion detection sensor |
| JP2013092591A (en) * | 2011-10-25 | 2013-05-16 | Furukawa Electric Co Ltd:The | Closure, inspection method for permeation into closure, and closing stopper used for closure |
| CN211124745U (en) * | 2019-11-29 | 2020-07-28 | 胥兵 | Optical cable monument mark structure |
| CN214095892U (en) * | 2021-01-07 | 2021-08-31 | 林其明 | Monitoring monument for detecting position of optical cable |
| CN113125126A (en) * | 2021-05-20 | 2021-07-16 | 李佑进 | Fault positioning photoelectric/electric monitoring cable |
| CN216770916U (en) * | 2021-11-29 | 2022-06-17 | 江苏通鼎宽带有限公司 | Optical cable joint box sealing monitoring assembly and monitoring system |
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