CN107171719B - The monitoring method and device of optical power - Google Patents

The monitoring method and device of optical power Download PDF

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Publication number
CN107171719B
CN107171719B CN201710463103.5A CN201710463103A CN107171719B CN 107171719 B CN107171719 B CN 107171719B CN 201710463103 A CN201710463103 A CN 201710463103A CN 107171719 B CN107171719 B CN 107171719B
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China
Prior art keywords
light
onu
optical power
preset duration
sending
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CN107171719A (en
Inventor
林青合
侯胜坤
郑龙
李刚
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Hisense Broadband Multimedia Technology Co Ltd
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Hisense Broadband Multimedia Technology Co Ltd
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Priority to CN201710463103.5A priority Critical patent/CN107171719B/en
Publication of CN107171719A publication Critical patent/CN107171719A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795Performance monitoring; Measurement of transmission parameters
    • H04B10/07955Monitoring or measuring power
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0771Fault location on the transmission path

Abstract

The present invention provides the monitoring method and device of a kind of optical power.This method, comprising: every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, determine whether the ONU sent out light in first preset duration;If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, the initial value of the number for not sending out light is 0;Count the number for not sending out light in the second preset duration;If the number for not sending out light is greater than preset threshold, the optical power value of the ONU is set as the corresponding optical power value of no light condition.Method provided in an embodiment of the present invention, the optical power value of latch is revised as the corresponding optical power value of no light condition at ONU for a long time non-luminous situation, monitoring and the actual conditions for emitting optical power when going offline are more consistent, so that maintenance personnel is easier orientation problem.

Description

The monitoring method and device of optical power
Technical field
The present invention relates to technical field of photo communication more particularly to the monitoring methods and device of a kind of optical power.
Background technique
Passive optical network generally includes optical line terminal (Optical Line Terminal, the letter for being installed on local side Claim OLT) and the mating optical network unit (Optical Network Unit, ONU) for being mounted on each customer site.Fig. 1 is The schematic diagram of passive optical network.As shown in Figure 1,1 OLT will dock multiple ONU because ONU is docked in business with OLT, by It is connected in the optical fiber of all ONU by optical splitter and enters OLT together, so using time-multiplexed band width control method, same One moment OLT only allows an ONU that can shine.ONU once sent out light, behind for a long time do not shine, optical power value also can It remains unchanged, that is, remains the luminous optical power value of last time, this phenomenon, which is referred to as, to latch.
The latch function of the transmitting optical power of existing ONU will lead to and once send out light, even if falling after registering later The abnormal conditions such as line, optical fiber are unplugged, optical fiber is broken off are remained on by the optical power value that local network management interface is read as most The optical power value of the normal luminous once recorded afterwards, so that maintenance personnel is according to the ONU optical power value read to ONU equipment Working condition make erroneous judgement, by optical power value provided by ONU can not Normal Feedback ONU working condition, be easy to dimension Shield personnel cause to mislead.
Summary of the invention
The present invention provides the monitoring method and device of a kind of optical power, to overcome the latch for emitting optical power in the prior art Function is easy to cause the problem of misleading to maintenance personnel.
In a first aspect, the present invention provides a kind of monitoring method of optical power, comprising:
Every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, the ONU is determined Whether light was sent out in first preset duration;
If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, described The initial value for not sending out the number of light is 0;
Count the number for not sending out light in the second preset duration;
If the number for not sending out light is greater than preset threshold, the optical power value of the ONU is set as no light condition pair The optical power value answered.
Second aspect, the present invention provide a kind of monitoring device of optical power, comprising:
Micro-control unit MCU and memory;
Wherein, memory, for storing program;
The MCU, the program for calling the memory to store, performs the following operations:
Every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, the ONU is determined Whether light was sent out in first preset duration;
If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, described The initial value for not sending out the number of light is 0;
Count the number for not sending out light in the second preset duration;
If the number for not sending out light is greater than preset threshold, the optical power value of the ONU is set as no light condition pair The optical power value answered.
The monitoring method and device of optical power provided by the invention determine that ONU is default first every the first preset duration Whether light was sent out in duration, and if it is not, the number for not sending out light is then added one, counted time for not sending out light in the second preset duration The optical power value of ONU is set as the corresponding optical power value of no light condition if the number for not sending out light is greater than preset threshold by number, The optical power value of latch is revised as the corresponding optical power value of no light condition at ONU for a long time non-luminous situation, is being fallen Monitoring and the actual conditions for emitting optical power when line are more consistent, so that maintenance personnel is easier orientation problem.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of passive optical network;
Fig. 2 is the structural schematic diagram of the ONU burst part of one embodiment of the method for the present invention;
Fig. 3 is the flow diagram of one embodiment of monitoring method of optical power of the present invention;
Fig. 4 is the structural schematic diagram of the part MCU of one embodiment of the method for the present invention;
Fig. 5 is the structural schematic diagram of one embodiment of monitoring device of optical power of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The latch function of the transmitting optical power of existing ONU will lead to once sending out light, fall after then if it happens registering The abnormal conditions such as line, optical fiber are unplugged, optical fiber is broken off are remained on by the optical power value that local network management interface is read as most The optical power value of the normal luminous once recorded afterwards, easily causes to mislead to maintenance personnel, and maintenance personnel can not be according to monitoring Optical power value determine whether to be abnormal situation.
The application improves regarding to the issue above, at interval of a preset duration, determines that ONU is in a certain preset duration It is no to send out light, if the optical power value of latch is revised as the corresponding smooth function of no light condition at ONU for a long time non-luminous situation Rate value.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 2 is the structural schematic diagram of the ONU burst part of one embodiment of the method for the present invention.Fig. 3 is optical power of the present invention The structural schematic diagram of one embodiment of monitoring method.As shown in figure 3, the monitoring method of the optical power of the present embodiment includes:
Step 301, every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, really Determine whether ONU sent out light in the first preset duration;
If step 302, ONU did not sent out light in the first preset duration, the number for not sending out light is added one;Wherein, it does not send out The initial value for crossing the number of light is 0;
The number for not sending out light in step 303, the second preset duration of statistics;
If step 304, the number for not sending out light are greater than preset threshold, the optical power value of ONU is set as no light condition pair The optical power value answered.
As shown in Fig. 2, the burst part of ONU involved in the embodiment of the present invention includes micro-control unit (Micro Controller Unit, abbreviation MCU), driver, monitoring sampling keep and digital newspaper industry circuit, laser, laser Shine the parts such as monitoring circuit.Wherein driver provides driving current required for laser normal luminous, according to the prominent of input Enable signal, high speed signal, driving intensity signal are sent out to drive laser;The hair that digital newspaper industry circuit is set according to MCU Optical target and the practical luminous signal (i.e. monitor current) of feedback carry out the driving intensity of dynamic regulation driver;Laser, which shines, supervises Control circuit is used to monitor and latch the optical power value of light emission time;Whether burst light instruction TxSD is used to refer to currently shine;MCU It is responsible for the luminous target setting of digital closed loop, the monitoring of burst optical power and external network management interface communication, MCU is according to TxSD MCU internal emission optical power register is updated with the luminous optical power value for monitoring circuit of laser.Network management interface can be passed through Read the value of MCU internal emission optical power register.
Above-mentioned various pieces can be located in a chip, be also possible to independent.
Specifically, whether the MCU of ONU once sent out in first preset duration every the determination of the first preset duration Light specifically can determine whether to send out light according to the level change of luminous instruction port, if such as the luminous level for indicating port High level is changed to by original low level, then it is assumed that sent out light, and if the level for the instruction port that shines is low level always, recognized To be not send out light.Shine instruction port TxSD as shown in Fig. 2, when ONU shines TxSD level be high level, do not send out The level of TxSD is low level when light.
If not sending out light in the first preset duration, the number for not sending out light is added one, this did not sent out the number of light Initial value is 0.
Count the number for not sending out light in the second preset duration.Second preset duration can be times of the first preset duration Number, such as the first preset duration are 40ms, and the second preset duration is 20s.Alternatively, the second preset duration is only to be much larger than first One duration of preset duration.
Count the number for not sending out light in a period of time.
If the number for not sending out light of statistics is greater than a preset threshold, the optical power value of ONU is set as no light condition pair The optical power value answered.Preset threshold can be an integer of the ratio less than the second preset duration and the first preset duration.
Pass through the second preset duration, whether the number that light was not sent out in judgement is greater than a preset threshold, if so, by ONU Optical power value be set as the corresponding optical power value of no light condition.
Illustratively, MCU checks whether an ONU sent out light every 40ms;It, will if ONU did not sent out light in 40ms The number for not sending out light adds one;If all not sending out light in 40ms each time in 20s, i.e., the number for not sending out light is 500 It is secondary, it is greater than a certain preset threshold, then the optical power value of ONU is set as the corresponding optical power value of no light condition.
Illustratively, MCU checks whether an ONU sent out light every 40ms;It, will if ONU did not sent out light in 40ms The number for not sending out light adds one;It is hair in remaining each 40ms if only sending out light in 40ms once in 20s Light is crossed, then the number for not sending out light is 499 times, is greater than a certain preset threshold, then the optical power value of ONU is set as no light condition pair The optical power value answered.
First preset duration, the second preset duration and preset threshold can determines according to actual conditions, the embodiment of the present invention This is not limited.
Optionally, before step C, can also include:
If ONU sent out light in the first preset duration, the number for not sending out light is reset.
It adds up always in order to avoid not sending out the number of light, such as sometimes the last one in the second preset duration Light was sent out in one preset duration, but did not sent out the last 40ms in light, such as 20s in n the first preset durations before Light was sent out, did not sent out light in remaining each 40ms, the number for not sending out light in this way can also be added to certain value, it is also possible to The optical power value of ONU is set as the corresponding optical power value of no light condition, causes maintenance personnel to form the judgement of mistake in this way, that is, recognizes It does not shine for a long time for ONU, it is believed that ONU breaks down.
Therefore ONU then resets the number for not sending out light once sending out light in a certain first preset duration.
Illustratively, MCU checks whether an ONU sent out light every 40ms;It, will if ONU did not sent out light in 40ms The number for not sending out light adds one;If ONU sent out light in 40ms, the number for not sending out light for above-mentioned is reset, and from laser The monitoring circuit that shines obtains the optical power value of monitoring, updates the optical power value of the transmitting optical power register inside MCU.If In 20s, light was not all sent out in 40ms each time, i.e., the number for not sending out light is 500 times, is greater than a certain preset threshold, then will The optical power value of transmitting optical power register inside MCU is the corresponding optical power value of no light condition.
The corresponding optical power value of no light condition can be -40dBm.
Method provided in this embodiment determines whether ONU sent out in the first preset duration every the first preset duration Light counts the number for not sending out light in the second preset duration, if this was not sent out if it is not, the number for not sending out light is then added one The number of light is greater than preset threshold, the optical power value of ONU is set as the corresponding optical power value of no light condition, i.e. ONU is for a long time The optical power value of latch is revised as the corresponding optical power value of no light condition in non-luminous situation, is emitted when going offline The monitoring of optical power and actual conditions are more consistent, so that maintenance personnel is easier orientation problem.
Fig. 4 is the structural schematic diagram of the part MCU of one embodiment of the method for the present invention.The base of embodiment shown in Fig. 3 On plinth, further, in practical applications, in the method for the present embodiment, step A can be specifically accomplished in that
According to the variation of the flag bit of the luminous instruction port of ONU, determine whether ONU sent out light in preset duration.
Specifically, it shines and indicates that port can be the TxSD in above-mentioned Fig. 2, TxSD is high electricity when ONU shines Flat, TxSD is low level when non-luminous.This indication signal for shining instruction port, which can be linked into MCU, to be had in level change The peripheral hardware of disconnected function, for example, 8051 kernels MCU external interrupt, and be configured to rising edge triggering, but closing its interruption makes It can function.After rising edge event occurred, interrupt flag bit can set 1.MCU reads the value of the flag bit, according to the mark The variation of the value of position determines whether ONU sent out light in preset duration.
Above-mentioned flag bit is reset after MCU reading.
As shown in figure 4, MCU may include the hardware for emitting optical power register, time-out counter, recording level and changing The program that (record, which shines, indicates the level change of port) and timing execute, wherein the program that timing executes is that the above method walks Suddenly the corresponding program code of A- step C.Wherein external network management can read MCU internal emission optical power register at any time Optical power value;The hardware of recording level variation can interrupt function using the level change of MCU in specific implementation of the invention The peripheral hardware of energy, once over level variation occurs, the timing routine that flag bit is changing to 1, MCU is clear by the flag bit after reading Sky is 0.
Illustratively, MCU checks whether an ONU has rising edge event every 40ms, i.e., whether inspection interrupt flag bit It is 1, time for then emptying the rising edge event of the record of hardware if there is the rising edge event of record, emptying time-out counter record Number, the monitoring circuit that shines from laser read the optical power value of monitoring, update the light function of the transmitting optical power register inside MCU Rate value, otherwise the number of time-out counter record increases certainly.After the second preset duration, the number of time-out counter record is judged It whether is more than preset threshold, if so, being that no light condition is corresponding by the optical power value of the transmitting optical power register inside MCU Optical power value.
Fig. 5 is the structural schematic diagram of one embodiment of monitoring device of optical power of the present invention.As shown in figure 5, the present embodiment The monitoring device of optical power may include:
Micro-control unit MCU501, memory 502;
Wherein, memory 502, for storing program;Specifically, program may include program code, said program code Including computer operation instruction.
MCU501, the program for calling memory to store, performs the following operations:
Every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, the ONU is determined Whether light was sent out in first preset duration;
If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, described The initial value for not sending out the number of light is 0;
Count the number for not sending out light in the second preset duration;
If the number for not sending out light is greater than preset threshold, the optical power value of the ONU is set as no light condition pair The optical power value answered.
Optionally, the MCU501 is also used to perform the following operations:
If the ONU sent out light in first preset duration, the number for not sending out light is reset.
Optionally, the MCU501, is specifically used for:
According to the variation of the flag bit of the luminous instruction port of the ONU, determine that the ONU is in the first preset duration It is no to send out light.
The monitoring device of optical power provided in this embodiment, MCU determine that ONU is default first every the first preset duration Whether light was sent out in duration, if it is not, then adding one, MCU to count in the second preset duration the number for not sending out light did not sent out light Number, if the number for not sending out light is greater than preset threshold, the optical power value of ONU is set as the corresponding light of no light condition by MCU The optical power value of latch is revised as the corresponding smooth function of no light condition at ONU for a long time non-luminous situation by performance number, i.e. MCU Rate value, monitoring and the actual conditions that optical power is emitted when going offline are more consistent, ask so that maintenance personnel is easier to position Topic.
It should be noted that for device embodiment, since it essentially corresponds to embodiment of the method, realization principle Similar with technical effect, so the relevent part can refer to the partial explaination of embodiments of method, details are not described herein again.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (6)

1. the monitoring method of a kind of pair of passive optical network equipment luminance characterized by comprising
Every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, determine the ONU in institute It states in the first preset duration and whether sent out light;
If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, described not send out The initial value for crossing the number of light is 0;
Count the number for not sending out light in the second preset duration;
If the number for not sending out light is greater than preset threshold, it is corresponding that the optical power value of the ONU is set as no light condition Optical power value.
2. the method according to claim 1, wherein further include:
If the ONU sent out light in first preset duration, the number for not sending out light is reset.
3. method according to claim 1 or 2, which is characterized in that the luminous indication end according to optical network unit ONU The level change of mouth, determines whether optical network unit ONU sent out light in the first preset duration, comprising:
According to the variation of the flag bit of the luminous instruction port of the ONU, determine that the ONU is in first preset duration It is no to send out light.
4. a kind of monitoring device of optical power characterized by comprising
Micro-control unit MCU and memory;
Wherein, the memory, for storing program;
The MCU, the program for calling the memory to store, performs the following operations:
Every the first preset duration according to the level change of the luminous instruction port of optical network unit ONU, determine the ONU in institute It states in the first preset duration and whether sent out light;
If the ONU did not sent out light in first preset duration, the number for not sending out light is added one;Wherein, described not send out The initial value for crossing the number of light is 0;
Count the number for not sending out light in the second preset duration;
If the number for not sending out light is greater than preset threshold, it is corresponding that the optical power value of the ONU is set as no light condition Optical power value.
5. device according to claim 4, which is characterized in that the MCU is also used to perform the following operations:
If the ONU sent out light in first preset duration, the number for not sending out light is reset.
6. device according to claim 4 or 5, which is characterized in that the MCU is specifically used for:
According to the variation of the flag bit of the luminous instruction port of the ONU, determine whether the ONU sends out in the first preset duration Cross light.
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CN109586788A (en) * 2018-12-10 2019-04-05 宜春学院 Monitoring system method for diagnosing faults, device, computer equipment and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101895350A (en) * 2010-08-17 2010-11-24 索尔思光电(成都)有限公司 10G Ethernet passive network single-fiber bidirectional optical module
CN102420653A (en) * 2011-11-24 2012-04-18 成都优博创技术有限公司 Outgoing light power monitoring method for ONU (Optical Network Unit) optical module
CN102545040A (en) * 2011-11-29 2012-07-04 厦门优迅高速芯片有限公司 Burst mode optical power holding and monitoring circuit
CN103475406A (en) * 2013-08-12 2013-12-25 成都德浩科技有限公司 ONU optical module emergent emission optical power monitoring system and monitoring method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8200083B2 (en) * 2008-01-03 2012-06-12 Futurewei Technologies, Inc. Burst power measurements using averaged power measurement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101895350A (en) * 2010-08-17 2010-11-24 索尔思光电(成都)有限公司 10G Ethernet passive network single-fiber bidirectional optical module
CN102420653A (en) * 2011-11-24 2012-04-18 成都优博创技术有限公司 Outgoing light power monitoring method for ONU (Optical Network Unit) optical module
CN102545040A (en) * 2011-11-29 2012-07-04 厦门优迅高速芯片有限公司 Burst mode optical power holding and monitoring circuit
CN103475406A (en) * 2013-08-12 2013-12-25 成都德浩科技有限公司 ONU optical module emergent emission optical power monitoring system and monitoring method thereof

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