CN110715752B - Optical cable joint box detection system and method - Google Patents
Optical cable joint box detection system and method Download PDFInfo
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- CN110715752B CN110715752B CN201910667531.9A CN201910667531A CN110715752B CN 110715752 B CN110715752 B CN 110715752B CN 201910667531 A CN201910667531 A CN 201910667531A CN 110715752 B CN110715752 B CN 110715752B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
Abstract
The invention discloses a system and a method for detecting an optical cable joint box, wherein the system comprises a circulator; the light source is used for emitting light waves and transmitting the light waves to the circulator; the physical breakpoint coding unit is connected with the circulator and used for receiving the light wave transmitted by the circulator and coding the light wave according to a preset coding rule to obtain a reflected light wave; and sending the reflected light wave to the circulator; the energy acquisition unit is connected with the circulator and used for receiving the reflected light wave sent by the circulator and acquiring the energy value of the reflected light wave; and the control unit is connected with the energy acquisition unit and used for calculating the temperature change condition of the optical cable joint box according to the energy value change condition of the reflected light wave. The system and the method for detecting the optical cable joint box realize the identification of the optical cable medium and the real-time effective detection of the temperature of the optical cable joint box.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a system and a method for detecting an optical cable connector box.
Background
The optical cable is a communication line which is formed by a cable core formed by a certain number of optical fibers according to a certain mode and is externally coated with a sheath or an outer protective layer and used for realizing optical signal transmission. Fiber optic cables utilize one or more optical fibers disposed in a surrounding jacket as a transmission medium. A cable closure is a splice that connects two or more cables together and has a splice portion with associated protective components, and the quality of the cable closure directly affects the quality of the cable run and the useful life of the cable run.
The existing identification method for the optical cable medium is high in cost, and the optical cable medium needs to be identified by means of third-party identification equipment, so that production and management of optical cable medium products are still lack of a simple and effective method for a long time. In addition, temperature affects the transmission of optical fiber signals, and the arrangement of optical fiber crystals changes at high temperature, which affects the signal transmission. However, the prior art cannot effectively detect the temperature change condition of the optical cable splice closure in real time, which affects the signal transmission effect and the service life of the optical fiber.
Disclosure of Invention
In view of the above, the present invention is directed to a system and a method for detecting a cable closure.
In view of the above object, a first aspect of the present invention provides a cable closure detecting system, comprising:
a circulator;
the light source is used for emitting light waves and transmitting the light waves to the circulator;
the physical breakpoint coding unit is connected with the circulator and used for receiving the light wave transmitted by the circulator and coding the light wave according to a preset coding rule to obtain a reflected light wave; and sending the reflected light wave to the circulator;
the energy acquisition unit is connected with the circulator and used for receiving the reflected light wave sent by the circulator and acquiring the energy value of the reflected light wave;
and the control unit is connected with the energy acquisition unit and used for calculating the temperature change condition of the optical cable joint box according to the energy value change condition of the reflected light wave.
Optionally, the physical breakpoint encoding unit is disposed in the optical cable splice closure, and the physical breakpoint encoding unit includes a sheath, at least one optical fiber segment, and at least one optical fiber breakpoint; the sheath protects the optical fiber section; and one optical fiber breakpoint is formed between any two adjacent optical fiber sections.
Optionally, the control unit is further configured to:
calculating the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time when the energy acquisition unit receives the reflected light wave;
and judging the number of the optical fiber breakpoints according to the number of the wave crests of the reflected light waves.
Optionally, the control unit is further configured to:
controlling the light source and the energy acquisition unit to be turned on and/or off;
and controlling the information acquisition of the energy acquisition unit.
Optionally, when the number of the cable splice closure is plural, the plural cable splice closures are connected in series.
In a second aspect of the present invention, there is provided a method for testing a cable closure, applied to the system for testing a cable closure, including:
the light source receives the light wave emission request and transmits the light wave to the circulator;
the circulator sends the light wave to a physical breakpoint encoding unit;
the physical breakpoint encoding unit encodes the light wave according to a preset code to obtain a reflected light wave;
the physical breakpoint encoding unit sends the reflected light wave to the circulator;
the circulator sends the reflected light wave to an energy acquisition unit and acquires an energy value of the reflected light wave;
the energy acquisition unit sends the energy value to a control unit;
and the control unit calculates the temperature change condition of the optical cable joint box according to the change condition of the energy value.
Optionally, the energy value of the reflected light wave is increased by 2.8% -3.2% when the temperature of the optical cable connector box is reduced by 1 ℃.
Optionally, the method further includes:
the energy acquisition unit acquires the time for receiving the reflected light waves and the starting time of the light source and sends the time to the control unit;
and the control unit calculates the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time for receiving the reflected light wave.
Optionally, the method further includes:
the energy acquisition unit acquires the number of wave crests of the reflected light waves and sends the number of the wave crests to the control unit;
and the control unit judges the number of the optical fiber breakpoints according to the number of the wave crests.
Optionally, the number of the wave crests of the reflected light waves corresponds to the number of the optical fiber breakpoints in the optical cable splice closure.
From the above, the system and the method for detecting the optical cable joint box provided by the invention realize the identification of the optical cable medium by utilizing the physical breakpoint coding and according to the corresponding relation between the number of the reflection points and the number of the breakpoints in the optical cable joint box; meanwhile, each breakpoint reflects certain light wave energy, the temperature change condition is calculated according to the change of the light wave energy value, and the real-time effective detection of the temperature of the cable splice closure is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic block diagram of one embodiment of a cable closure testing system according to the present invention;
fig. 2 is a schematic structural view of a cable closure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a physical breakpoint encoding unit of an optical cable connector box according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for testing a closure according to an embodiment of the present invention;
fig. 5A and 5B are schematic diagrams illustrating a method for testing a closure according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
The invention provides a detection system for an optical cable joint box, which is shown in reference figures 1 and 2 and comprises:
a circulator 1;
a light source 2 for emitting a light wave and transmitting the light wave to the circulator 1;
the physical breakpoint encoding unit 3 is connected with the circulator 1, and is configured to receive the light wave transmitted by the circulator 1, and encode the light wave according to a preset encoding rule to obtain a reflected light wave; and transmitting the reflected light wave to the circulator 1;
the energy acquisition unit 4 is connected with the circulator 1 and is used for receiving the reflected light wave sent by the circulator 1 and acquiring an energy value of the reflected light wave;
and the control unit 5 is connected with the energy acquisition unit 4 and used for calculating the temperature change condition of the optical cable joint box according to the energy value change condition of the reflected light wave.
In some alternative embodiments, referring to fig. 2 and 3, the physical breakpoint encoding unit 3 is disposed in the cable closure 5, and the physical breakpoint encoding unit 3 includes a sheath 301, at least one optical fiber segment 302, and at least one optical fiber breakpoint 303; the sheath 301 protects the optical fiber segment 302; one optical fiber break point 303 is formed between any two adjacent optical fiber segments 302.
It can be seen from the foregoing embodiments that, in the optical cable joint box detection system provided in this embodiment, the physical breakpoint encoding unit is disposed in the optical cable joint box, and corresponding encoding is performed in the physical breakpoint encoding unit according to the temperature in the optical cable joint box, so as to obtain the reflected light wave, and the temperature change condition in the optical cable joint box is calculated according to the energy value change condition of the reflected light wave, so that the structure is simple, and the cost is low. It should be noted that each optical fiber breakpoint reflects optical wave energy, when the temperature of the optical cable joint box changes, the distance between two adjacent optical fiber sections also changes, the reflected optical wave energy changes accordingly, the temperature is transmitted to the physical breakpoint encoding unit, so that the physical breakpoint encoding reflected energy changes, when the temperature of the joint box changes, the energy value reflected to the energy collecting unit generates energy difference due to different temperatures, and the temperature change value of the optical cable joint box can be calculated according to the energy value difference.
In some alternative embodiments, the control unit is further configured to,
calculating the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time when the energy acquisition unit receives the reflected light wave;
and judging the number of the optical fiber breakpoints according to the number of the wave crests of the reflected light waves. It should be noted that, according to the length of the optical fiber segment and the number of wave crests, the optical cable splice closure is quickly identified, the optical cable splice closure can be identified without a third-party identification device, the identification precision is improved, and the cost is saved.
In some optional embodiments, the control unit is further configured to:
controlling the light source and the energy acquisition unit to be turned on and/or off;
and controlling the information acquisition of the energy acquisition unit.
The control unit is connected with the light source, and sends instructions of light emission and light termination to the light source, and the light source is turned on and off according to the instructions sent by the control unit. Meanwhile, the control unit is also connected with the energy acquisition unit, so that the control unit not only controls the opening and/or closing of the energy acquisition unit, but also receives the information acquired by the energy acquisition unit.
In some alternative embodiments, referring to fig. 1, when the cable closure 5 is plural, a plurality of the cable closures 5 are connected in series. Each optical cable joint box is a temperature measuring point, and the temperature of the optical cable joint boxes can be measured by connecting a plurality of optical cable joint boxes; the control unit can realize quick identification on the optical cable joint box according to the length of the optical fiber segment and the number of wave crests.
In a second aspect of the present invention, referring to fig. 4, there is provided a method for detecting a cable splice closure, which is applied to the system for detecting a cable splice closure, and specifically includes:
step 401: the light source receives the light wave emission request and transmits the light wave to the circulator;
step 402: the circulator sends the light wave to a physical breakpoint encoding unit;
step 403: the physical breakpoint encoding unit encodes the light wave according to a preset code to obtain a reflected light wave;
step 404: the physical breakpoint encoding unit sends the reflected light wave to the circulator;
step 405: the circulator sends the reflected light wave to an energy acquisition unit and acquires an energy value of the reflected light wave;
step 406: the energy acquisition unit sends the energy value to a control unit;
step 407: and the control unit calculates the temperature change condition of the optical cable joint box according to the change condition of the energy value.
It can be seen from the above embodiments that, in the optical cable joint box detection method provided by the present invention, when the temperature of the optical cable joint box changes, the physical breakpoint coding unit codes to cause the energy of the reflected light wave to change, and the temperature change condition in the optical cable joint box is calculated according to the change condition of the energy value of the reflected light wave, so that the structure is simple and the cost is low.
In some optional embodiments, the energy value of the reflected light wave is increased by 2.8% -3.2% every time the temperature of the optical cable joint box is reduced by 1 degree centigrade, and the temperature change condition of the optical cable joint box is calculated according to the change condition of the energy value of the reflected light wave.
In some optional embodiments, the method further comprises:
the energy acquisition unit acquires the time for receiving the reflected light waves and the starting time of the light source and sends the time to the control unit;
and the control unit calculates the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time for receiving the reflected light wave.
In some optional embodiments, the method further comprises:
the energy acquisition unit acquires the number of wave crests of the reflected light waves and sends the number of the wave crests to the control unit;
and the control unit judges the number of the optical fiber breakpoints according to the number of the wave crests.
Optionally, the number of peaks of the reflected light wave corresponds to the number of optical fiber breakpoints in the optical cable splice closure. It should be noted that, the identification of the optical cable splice closure is realized according to the number of peaks of the reflected light wave and the length of the optical fiber segment. For example, referring to fig. 5A and 5B, when the number of peaks is 4, it indicates that the cable closure has 4 fiber breakpoints; the energy of the light wave in fig. 5B is reduced from the energy of the light wave in fig. 5A, indicating an increase in temperature for a cable closure having 4 fiber breakpoints. The optical cable joint box can be detected without a third-party identification device, so that the detection precision is improved, and the cost is saved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A cable closure detection system, comprising:
a circulator;
the light source is used for emitting light waves and transmitting the light waves to the circulator;
the physical breakpoint coding unit is connected with the circulator and used for receiving the light wave transmitted by the circulator and coding the light wave according to a preset coding rule to obtain a reflected light wave; and sending the reflected light wave to the circulator;
the energy acquisition unit is connected with the circulator and used for receiving the reflected light wave sent by the circulator and acquiring the energy value of the reflected light wave;
the physical breakpoint encoding unit is arranged in the optical cable joint box and comprises a sheath, at least one optical fiber section and at least one optical fiber breakpoint; the sheath protects the optical fiber section; one optical fiber breakpoint is formed between any two adjacent optical fiber sections;
the control unit is connected with the energy acquisition unit and used for calculating the temperature change condition of the optical cable joint box according to the energy value change condition of the reflected light wave; and
calculating the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time when the energy acquisition unit receives the reflected light wave;
and judging the number of the optical fiber breakpoints according to the number of the wave crests of the reflected light waves.
2. The cable closure detection system of claim 1, wherein the control unit is further configured to:
controlling the light source and the energy acquisition unit to be turned on and/or off;
and controlling the information acquisition of the energy acquisition unit.
3. The cable closure testing system of claim 1, wherein a plurality of said cable closures are connected in series when said number of cable closures is plural.
4. A cable closure testing method applied to the cable closure testing system according to any one of claims 1 to 3, comprising:
the light source receives the light wave emission request and transmits the light wave to the circulator;
the circulator sends the light wave to a physical breakpoint encoding unit;
the physical breakpoint encoding unit encodes the light wave according to a preset code to obtain a reflected light wave;
the physical breakpoint encoding unit sends the reflected light wave to the circulator;
the circulator sends the reflected light wave to an energy acquisition unit and acquires an energy value of the reflected light wave;
the energy acquisition unit sends the energy value to a control unit;
and the control unit calculates the temperature change condition of the optical cable joint box according to the change condition of the energy value.
5. The method of claim 4, wherein the energy level of the reflected light waves increases by 2.8% to 3.2% for every 1 degree Celsius decrease in the temperature of the cable closure.
6. The method of claim 4, further comprising:
the energy acquisition unit acquires the time for receiving the reflected light waves and the starting time of the light source and sends the time to the control unit;
and the control unit calculates the length of the optical fiber section corresponding to the reflected light wave according to the time difference between the starting time of the light source and the time for receiving the reflected light wave.
7. The method of claim 4, further comprising:
the energy acquisition unit acquires the number of wave crests of the reflected light waves and sends the number of the wave crests to the control unit;
and the control unit judges the number of the optical fiber breakpoints according to the number of the wave crests.
8. The method of claim 7, wherein the number of peaks of the reflected light wave corresponds to the number of fiber breaks within the fiber optic splice enclosure.
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| CN201910667531.9A CN110715752B (en) | 2019-07-23 | 2019-07-23 | Optical cable joint box detection system and method |
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| CN111130027B (en) * | 2019-12-18 | 2021-04-20 | 安徽复兴电缆集团有限公司 | Hard core cable breakpoint detection and repair device |
| CN111865405B (en) * | 2020-06-22 | 2021-08-06 | 中山水木光华电子信息科技有限公司 | Protection system, method and device for optical fiber coding and storage medium |
| CN111865403B (en) * | 2020-06-22 | 2022-05-13 | 中山水木光华电子信息科技有限公司 | Optical fiber protection system, method, device and storage medium |
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| CN201885826U (en) * | 2010-11-18 | 2011-06-29 | 山东省科学院激光研究所 | Electromechanical equipment optical fiber online monitoring system |
| CA3198345A1 (en) * | 2015-05-21 | 2016-11-24 | Hifi Engineering Inc. | Methods and systems using optical fiber interferometry |
| CN208155478U (en) * | 2018-02-01 | 2018-11-27 | 深圳伊讯科技有限公司 | A kind of power battery optical fiber temperature-measurement time-delay mechanism |
| CN110044514B (en) * | 2019-04-18 | 2023-11-10 | 云南电网有限责任公司昭通供电局 | Optical fiber section sequence-based coded splice box temperature sensing system |
| CN110207849B (en) * | 2019-07-02 | 2020-11-06 | 浙江科技学院 | Temperature sensor based on reflective long-period fiber grating and measuring method |
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