CN109827665A - A kind of power optical fiber cable overheat method for early warning and device into family network - Google Patents

A kind of power optical fiber cable overheat method for early warning and device into family network Download PDF

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Publication number
CN109827665A
CN109827665A CN201711182899.3A CN201711182899A CN109827665A CN 109827665 A CN109827665 A CN 109827665A CN 201711182899 A CN201711182899 A CN 201711182899A CN 109827665 A CN109827665 A CN 109827665A
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China
Prior art keywords
onu
optical power
cable
olt
oplc
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CN201711182899.3A
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Chinese (zh)
Inventor
王芳
余冰雁
葛维春
陈洁
卓安生
李健
罗桓桓
李斌
周桂平
孙亮
王英杰
徐明霞
张立颖
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State Grid Liaoning Electric Power Co Ltd
China Academy of Information and Communications Technology CAICT
Beijing Guodiantong Network Technology Co Ltd
Original Assignee
State Grid Liaoning Electric Power Co Ltd
China Academy of Information and Communications Technology CAICT
Beijing Guodiantong Network Technology Co Ltd
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Application filed by State Grid Liaoning Electric Power Co Ltd, China Academy of Information and Communications Technology CAICT, Beijing Guodiantong Network Technology Co Ltd filed Critical State Grid Liaoning Electric Power Co Ltd
Priority to CN201711182899.3A priority Critical patent/CN109827665A/en
Publication of CN109827665A publication Critical patent/CN109827665A/en
Pending legal-status Critical Current

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Abstract

This application provides a kind of power optical fibers into family network, and cable overheats method for early warning, this method comprises: periodically acquiring the transmitting optical power of OLT and the transmitting optical power and received optical power of received optical power and ONU;Using the transmitting optical power and received optical power of the OLT of acquisition and the transmitting optical power and received optical power of ONU, the pad value that each ONU corresponds to optical link is calculated;Determine whether the pad value is greater than default drop threshold, if so, generating warning information for the corresponding OPLC cable of ONU and prompting user;Otherwise, next period is waited;Wherein, the content of the warning information are as follows: temperature is more than preset temperature threshold in the cable of the OPLC cable.Based on same inventive concept, the application also goes out a kind of power optical fiber cable overheat prior-warning device into family network, is able to solve in practical O&M and is not easy the problem of monitoring cable temperature outside OPLC cable.

Description

A kind of power optical fiber cable overheat method for early warning and device into family network
Technical field
The present invention relates to field of communication technology, in particular to a kind of power optical fiber cable into family network overheats method for early warning And device.
Background technique
Power optical fiber refers to the letter of power grid " last km " to family (Power Fiber to The Home, PFTTH) Breathization construction, by using optical fiber composite low-voltage cable (Optical Fiber Composite Low-voltage Cable, OPLC) cable realizes that electric power and optical signal are transmitted with cable, while providing electric energy, meets smart grid with electricity consumption link information Change, automation, interactive demand, solves the problems, such as the interaction of terminal user's power information.
OPLC cable is a kind of cable that lv power cable is mutually compound with light unit, its appearance, so that needing to divide originally Electric wire, the cable not being laid with become integrated construction, not only simplify installation procedure, and have reached the mesh of multi-internet integration 's.
It is OPLC cable structure schematic diagram referring to Fig. 1, Fig. 1.OPLC cable is mainly by conductor, insulating layer, optical fiber, filler, outer The part such as sheath, armor that may be present and liner layer forms.Wherein, the material of conductor can be copper conductor or aluminium conductor, Insulating materials on the outside of conductor is generally polyvinyl chloride or crosslinked polyethylene, and insulation thickness is related with conductor nominal area of section, Conductor and insulating layer constitute cable;Fiber number is 2-144 core, and the spy with OPLC cable core can be required according to fiber transmission performance Depending on different property and number of users.
With the continuous propulsion and development of power optical fiber to family pilot work, the utilization rate of OPLC cable is higher and higher, but There is also certain hidden danger in use.In actual use, if cable short circuit in OPLC cable, as long as 5 seconds, the conductor highest temperature Degree polyvinyl chloride just can reach 160 DEG C, crosslinked polyetylene insulated 250 DEG C.The situation of this cable temperature exception is not only possible to be led Distribution is caused to interrupt, the hidden danger that more there is fire, even cause great life and property loss.But then, outside due to OPLC cable There is the protective case of insulated heat in side, so be difficult directly to detect the temperature of cable inner cable in O&M, thus be difficult from Outside is monitored to abnormal.
Summary of the invention
In view of this, the application provides a kind of power optical fiber cable overheat method for early warning and device into family network, it can It solves the problems, such as to be not easy to monitor cable temperature outside OPLC cable in practical O&M.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of power optical fiber cable overheat method for early warning into family network, this method comprises:
Periodically acquire the transmitting optical power of optical line terminal OLT and the hair of received optical power and optical network unit ONU Send optical power and received optical power;
Using the transmitting optical power and received optical power of the OLT of acquisition and the transmitting optical power of ONU and receive light function Rate calculates the pad value that each ONU corresponds to optical link;
Determine whether the pad value is greater than default drop threshold, if so, generating early warning for the corresponding OPLC cable of ONU Information simultaneously prompts user;Otherwise, next period is waited;Wherein, the content of the warning information are as follows: warm in the cable of the OPLC cable Degree is more than preset temperature threshold.
A kind of power optical fiber cable into family network overheats prior-warning device, which includes: acquiring unit, computing unit, Determination unit and prewarning unit;
The acquiring unit, for periodically acquiring the transmitting optical power and received optical power of optical line terminal OLT, and The transmitting optical power and received optical power of optical network unit ONU;
The computing unit, the transmitting optical power and received optical power of the OLT for being obtained using the acquiring unit, with And the transmitting optical power and received optical power of ONU, calculate the pad value that each ONU corresponds to optical link;
Whether the determination unit, the pad value for determining that the computing unit calculates are greater than default drop threshold;
The prewarning unit, for when the determination unit determines that the pad value is greater than default drop threshold, for The corresponding OPLC cable of ONU generates warning information and prompts user;Otherwise, next period is waited;Wherein, the warning information is interior Hold are as follows: temperature is more than preset temperature threshold in the cable of the OPLC cable.
As can be seen from the above technical solution, it is monitored in real time in the application by optical signal power, determines the decaying of optical link Value, and determine whether pad value is more than default drop threshold, to determine for whether the corresponding OPLC of the ONU carries out early warning. The program is able to solve in practical O&M and is not easy the problem of monitoring cable temperature outside OPLC cable.
Detailed description of the invention
Fig. 1 is OPLC cable structure schematic diagram;
Power optical fiber cable into family network overheats early warning flow diagram in Fig. 2 the embodiment of the present application;
Fig. 3 is that power optical fiber cable into family network overheats early warning system schematic diagram in the embodiment of the present application;
Fig. 4 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples, Technical solution of the present invention is described in detail.
The temperature change of cable in OPLC cable can obviously impact the optical fiber attenuation for being total to cable with it.Cable temperature Rise and will cause the decaying of optical fiber, cause communication network can not normal use, packet loss occur, seriously even communication disruption shows As.Since the influence that the attenuation coefficient of optical fiber varies with temperature is metastable, it is possible to be estimated according to the decaying of optical fiber The temperature of cable in OPLC cable is calculated, to carry out early warning and positioning extremely to cable temperature.
The application provides a kind of power optical fiber cable overheat method for early warning into family network, is supervised in real time by optical signal power Control determines the pad value of optical link, and determines whether pad value is more than default drop threshold, corresponding for the ONU to determine OPLC whether carry out early warning.The program, which is able to solve, to be not easy to monitor asking for cable temperature outside OPLC cable in practical O&M Topic.
Embodiment one
In conjunction with attached drawing, power optical fiber cable into family network in the embodiment of the present application is described in detail and overheats prealarming process.
Referring to fig. 2, power optical fiber cable into family network overheats early warning flow diagram in Fig. 2 the embodiment of the present application.Tool Body step are as follows:
Step 201, source of early warning periodically acquires the transmission of optical line terminal (optical line terminal, OLT) The transmitting optical power and reception of optical power and received optical power and optical network unit (Optical Network Unit, ONU) Optical power.
Source of early warning in the embodiment of the present application can be an expert analyzing system, can be realized by an equipment, Corresponding early warning and positioning function can be implemented in combination with by multiple equipment.
Source of early warning periodically acquires the transmitting optical power of OLT and the transmitting optical power of received optical power and ONU and connects When receiving optical power, it can obtain, can also be obtained from EMS from OLT, when specific implementation, acquisition process is as follows:
It is power optical fiber cable mistake into family network in the embodiment of the present application referring to Fig. 3, Fig. 3 for being obtained from OLT Hot early warning system schematic diagram.
EMS, OLT, optical splitter and ONU are the elements of PON system in Fig. 3, and link a-h is OPLC cable, EMS Ethernet connection is established between OLT, source of early warning can choose one of EMS or OLT and establish connection, the present embodiment with OLT For connection, for obtaining the transmitting-receiving optical power of ONU and OLT.
ONU equipment itself has the function that detection sends and receivees optical power and active reporting initial parameter;OLT device sheet Body has the optical power parameter of reception and analysis ONU, itself sends and receivees optical power detection and calculates optical link loss Function;EMS system, which has to issue, to be cooperateed with optical link test command to some PON and analyzes the function of data.Therefore, in this hair In bright, without being reequiped to EMS, OLT, ONU, using its in optical power detection function.
Source of early warning periodically sends the hair of the transmitting optical power and received optical power and ONU that obtain OLT to OLT Send the request of optical power and received optical power;
OLT and ONU is locally carrying out optical power detection, send on the received optical power and transmitting optical power that ONU will test To OLT;
OLT is in the request for receiving source of early warning, by the hair of the transmitting optical power of OLT and received optical power and ONU Optical power and received optical power is sent to be reported to source of early warning.
Source of early warning receives the transmitting optical power for the OLT that OLT is reported and the transmission light function of received optical power and ONU After rate and received optical power, the transmitting optical power of OLT and the transmitting optical power and reception light of received optical power and ONU are obtained Power.
Step 202, source of early warning uses the transmitting optical power of the OLT obtained and the transmission light of received optical power and ONU Power and received optical power calculate the pad value that each ONU corresponds to optical link.
Calculate the pad value λ that any ONU corresponds to optical link:
Wherein, POLT_OutFor the transmitting optical power of OLT, PONU_InFor the received optical power of ONU, PONU_OutFor the transmission of ONU Optical power, POLT_InFor the received optical power of OLT.
When calculating the pad value of optical link in the embodiment of the present application, while transmitting-receiving bidirectional optical power is considered, it can be more quasi- It really determines the pad value of optical link, and then accurately determines corresponding temperature.
Step 203, source of early warning determines whether the pad value is greater than default drop threshold, if so, executing step 204;Otherwise, step 205 is executed.
Step 204, source of early warning generates warning information for the corresponding OPLC cable of ONU and prompts user;The early warning letter The content of breath are as follows: temperature is more than preset temperature threshold in the cable of the OPLC cable.Terminate this process.
Temperature is the temperature of the cable in OPLC cable in the cable of OPLC cable.
Step 205, next period is waited.
Embodiment two
According to OPLC cable early warning, the raised position of temperature in the cable of OPLC cable is positioned.
Determine that each ONU is corresponded to after whether OPLC cable generate after early warning in the mode in embodiment one, in conjunction with entire PON All ONU are directed in system, position the raised position of temperature in the cable of OPLC cable.
PON system is a kind of tree structure, the characteristics of according to tree structure, when trunk breaks down, each point under trunk The corresponding node of branch can failure, conversely, the probability of trunk failure is most when the corresponding node of trunk Xia Ge branch equal failure Greatly, the probability that each branch breaks down simultaneously is smaller;When branch's failure, only the corresponding node of the branch just will appear event Barrier, does not influence other branch nodes.
Therefore, the application provides the raised location positioning method of temperature of following OPLC cable:
When each branch ONU belonged under same trunk corresponds to part prediction occurring in OPLC cable, it is determined that prediction occurring Branch ONU correspond to OPLC cable break down probability be 100%;
When each branch ONU belonged under same trunk corresponds to the equal prediction occurring of OPLC cable, it is determined that sent out in trunk OPLC cable The probability of raw failure is the first predetermined probabilities α, each branch ONU under the trunk correspond to break down in OPLC cable probability for β/ N, β are the second predetermined probabilities, and N is the number of branch ONU, alpha+beta=1, and α > β.
With reference to the accompanying drawing, optical link fault location process is described in detail.In Fig. 3, operated normally in whole network Cheng Zhong, source of early warning periodically read optical power data from OLT or EMS, and every ONU is corresponded to the receipts of optical link by OLT/EMS Luminous power information is uploaded to default equipment, and source of early warning calculates every ONU according to the optical power data received and corresponds to light chain Then the pad value on road judges whether the pad value of the link is more than default drop threshold, if any, it is determined that corresponding ONU institute is right The OPLC cable failure answered.Specific positioning method is as follows:
If the corresponding OPLC cable early warning of only ONU1, fault point is in the corresponding OPLC cable of optical link d;
If the corresponding OPLC cable of ONU1 and ONU2 has early warning, break down in the corresponding OPLC cable of optical link b Probability be greater than in the corresponding OPLC cable of optical link d in OPLC cable corresponding with optical link e the probability of failure simultaneously;
If the corresponding OPLC cable of ONU1 and ONU3 has an early warning, fault point in the corresponding OPLC cable of optical link d and In the corresponding OPLC cable of optical link f;
If having early warning simultaneously in the corresponding OPLC cable of the corresponding optical link of ONU1, ONU2, ONU3, ONU4, ONU5, therefore Barrier point is maximum in the probability A of the corresponding OPLC cable of optical link a, breaks down simultaneously in the corresponding OPLC cable of optical link b, c general Rate B is secondly, the probability C to break down simultaneously in the corresponding OPLC cable of five optical links of optical link d, e, f, g, h is minimum;And A+B+ C/5=1;
If having early warning in OPLC cable corresponding to the corresponding optical link of ONU3, ONU4 and ONU5, fault point is in light Maximum probability E in the corresponding OPLC cable of link c, the interior probability F to break down simultaneously of the corresponding OPLC cable of optical link f, g, h is most It is small, and E+F/3=1.
There is the positioning method of early warning in OPLC cable corresponding to the corresponding optical link of other ONU, here just not It enumerates.
Based on same inventive concept, the application also proposes a kind of power optical fiber cable overheat early warning dress into family network It sets.Referring to fig. 4, Fig. 4 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.The device includes: to obtain Unit 401, computing unit 402, determination unit 403 and prewarning unit 404;
Acquiring unit 401, for periodically acquiring the transmitting optical power of OLT and the transmission light of received optical power and ONU Power and received optical power;
Computing unit 402, the transmitting optical power and received optical power of the OLT for being obtained using acquiring unit 401, and The transmitting optical power and received optical power of ONU calculates the pad value that each ONU corresponds to optical link;
Whether determination unit 403, the pad value for determining that computing unit 402 calculates are greater than default drop threshold;
For working as the determination unit
Prewarning unit 404 is used for when determination unit 403 determines that the pad value is greater than default drop threshold, for ONU Corresponding OPLC cable generates warning information and prompts user;Otherwise, next period is waited;Wherein, the content of the warning information Are as follows: temperature is more than preset temperature threshold in the cable of the OPLC cable.
Preferably,
Computing unit 403 corresponds to the pad value λ of optical link specifically for calculating any ONU:
Wherein, POLT_OutFor the transmitting optical power of OLT, PONU_InFor the received optical power of ONU, PONU_OutFor the transmission light function of ONU Rate, POLT_InFor the received optical power of OLT.
Preferably,
Acquiring unit 402, specifically for periodically acquiring the transmitting optical power of OLT and the hair of received optical power and ONU It when sending optical power and received optical power, obtains from OLT, or is obtained from EMS.
Preferably, described device further comprises: positioning unit 405;
Positioning unit 405, for corresponding to part prediction occurring in OPLC cable as each branch ONU belonged under same trunk, Then determine prediction occurring branch ONU correspond to OPLC cable break down probability be 100%;When each branch belonged under same trunk ONU corresponds to the equal prediction occurring of OPLC cable, it is determined that the probability that trunk OPLC cable breaks down be the first predetermined probabilities α, at this It is β/N that each branch ONU under trunk, which corresponds to the probability that breaks down in OPLC cable, and β is the second predetermined probabilities, that N is branch ONU Number, alpha+beta=1, and α > β.
The unit of above-described embodiment can integrate in one, can also be deployed separately;It can be merged into a unit, it can also To be further split into multiple subelements.
In conclusion the application is by the way that in PFTTH practical application, cable mid-winter not only be may cause in OPLC cable Distribution interrupts, the hidden danger that more there is fire, even cause great life and property loss.The invention proposes a kind of cable overheats Real-time early warning device, it is whether abnormal by cable temperature in optical signal quality real time monitoring, early warning OPLC cable, solve practical fortune It is not easy to monitor the difficulty of cable temperature outside OPLC cable in dimension.
On the other hand, the overheat that scheme proposed by the invention passes through the ONU joint-detection positioning cable in multiple networks Point can substantially reduce maintenance cost and investigation speed, convenient for power optical fiber to the promotion and application of the family network architecture.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.

Claims (8)

1. a kind of power optical fiber cable into family network overheats method for early warning, which is characterized in that this method comprises:
Periodically acquire the transmitting optical power of optical line terminal OLT and the transmission light of received optical power and optical network unit ONU Power and received optical power;
Use the transmitting optical power and received optical power of the OLT of acquisition and the transmitting optical power and received optical power of ONU, meter Calculate the pad value that each ONU corresponds to optical link;
Determine whether the pad value is greater than default drop threshold, if so, generating warning information for the corresponding OPLC cable of ONU And prompt user;Otherwise, next period is waited;Wherein, the content of the warning information are as follows: temperature is super in the cable of the OPLC cable Cross preset temperature threshold.
2. the method according to claim 1, wherein calculating the pad value λ that any ONU corresponds to optical link:
Wherein, POLT_OutFor the transmitting optical power of OLT, PONU_InFor the received optical power of ONU, PONU_OutFor the transmission light function of ONU Rate, POLT_InFor the received optical power of OLT.
3. the method according to claim 1, wherein
The transmitting optical power and received optical power of the transmitting optical power for periodically acquiring OLT and received optical power and ONU When, it is obtained from OLT, or obtained from Element management system EMS.
4. method according to claim 1-3, which is characterized in that the method further includes:
When each branch ONU belonged under same trunk corresponds to part prediction occurring in OPLC cable, it is determined that the branch of prediction occurring ONU correspond to OPLC cable break down probability be 100%;
When each branch ONU belonged under same trunk corresponds to the equal prediction occurring of OPLC cable, it is determined that event occurs in trunk OPLC cable The probability of barrier is the first predetermined probabilities α, and it is β/N, β that each branch ONU under the trunk, which corresponds to the probability that breaks down in OPLC cable, For the second predetermined probabilities, N is the number of branch ONU, alpha+beta=1, and α > β.
5. a kind of power optical fiber cable into family network overheats prior-warning device, which is characterized in that the device includes: acquiring unit, Computing unit, determination unit and prewarning unit;
The acquiring unit, for periodically acquiring the transmitting optical power and received optical power and light net of optical line terminal OLT The transmitting optical power and received optical power of network unit ONU;
The computing unit, the transmitting optical power and received optical power of the OLT for being obtained using the acquiring unit, and The transmitting optical power and received optical power of ONU calculates the pad value that each ONU corresponds to optical link;
Whether the determination unit, the pad value for determining that the computing unit calculates are greater than default drop threshold;
The prewarning unit, for when the determination unit determines that the pad value is greater than default drop threshold, for ONU pairs The OPLC cable answered generates warning information and prompts user;Otherwise, next period is waited;Wherein, the content of the warning information are as follows: Temperature is more than preset temperature threshold in the cable of the OPLC cable.
6. device according to claim 5, which is characterized in that
The computing unit corresponds to the pad value λ of optical link specifically for calculating any ONU:
Wherein, POLT_OutFor the transmitting optical power of OLT, PONU_InFor the received optical power of ONU, PONU_OutFor the transmission light function of ONU Rate, POLT_InFor the received optical power of OLT.
7. device according to claim 5, which is characterized in that
The acquiring unit, the transmission of transmitting optical power and received optical power and ONU specifically for periodically acquiring OLT It when optical power and received optical power, obtains from OLT, or is obtained from Element management system EMS.
8. according to the described in any item devices of claim 5-7, which is characterized in that described device further comprises: positioning unit;
The positioning unit, for corresponding to part prediction occurring in OPLC cable as each branch ONU belonged under same trunk, then really Determine prediction occurring branch ONU correspond to OPLC cable break down probability be 100%;
When each branch ONU belonged under same trunk corresponds to the equal prediction occurring of OPLC cable, it is determined that event occurs in trunk OPLC cable The probability of barrier is the first predetermined probabilities α, and it is β/N, β that each branch ONU under the trunk, which corresponds to the probability that breaks down in OPLC cable, For the second predetermined probabilities, N is the number of branch ONU, alpha+beta=1, and α > β.
CN201711182899.3A 2017-11-23 2017-11-23 A kind of power optical fiber cable overheat method for early warning and device into family network Pending CN109827665A (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
US20030026581A1 (en) * 2001-07-31 2003-02-06 Richard Sharp System and method for calibrating and operating a semiconductor variable optical attenuator
CN101232328A (en) * 2007-01-26 2008-07-30 华为技术有限公司 Method for locating case point of branch optical fiber, optical network and network appliance
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CN101499853A (en) * 2008-01-30 2009-08-05 华为技术有限公司 Optical path measuring method, optical network and network appliance
CN102386974A (en) * 2011-12-13 2012-03-21 中国电信股份有限公司 PON (passive optical network) network fault detection method and device
CN108964756A (en) * 2017-05-18 2018-12-07 中兴通讯股份有限公司 Fault detection method and device, the passive optical network of Optical Distribution Network

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030026581A1 (en) * 2001-07-31 2003-02-06 Richard Sharp System and method for calibrating and operating a semiconductor variable optical attenuator
CN101232328A (en) * 2007-01-26 2008-07-30 华为技术有限公司 Method for locating case point of branch optical fiber, optical network and network appliance
US20080232795A1 (en) * 2007-03-21 2008-09-25 Adva Ag Optical Networking Method And System For Localizing An Attenuation Change Location In An Optical Waveguide
CN101499853A (en) * 2008-01-30 2009-08-05 华为技术有限公司 Optical path measuring method, optical network and network appliance
CN102386974A (en) * 2011-12-13 2012-03-21 中国电信股份有限公司 PON (passive optical network) network fault detection method and device
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Application publication date: 20190531