CN109450530A - A kind of optical module received optical power overload protective device and guard method - Google Patents
A kind of optical module received optical power overload protective device and guard method Download PDFInfo
- Publication number
- CN109450530A CN109450530A CN201811567726.8A CN201811567726A CN109450530A CN 109450530 A CN109450530 A CN 109450530A CN 201811567726 A CN201811567726 A CN 201811567726A CN 109450530 A CN109450530 A CN 109450530A
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- China
- Prior art keywords
- power
- optical module
- optical
- unit
- module
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1615—Switching on; Switching off, e.g. remotely
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/806—Arrangements for feeding power
Abstract
The present invention provides a kind of optical module received optical power overload protective devices, are made of optical power detection unit, control unit, optical module power supply unit, Alarm Unit, optical module unit.The present invention also provides the guard methods of the system.The present invention is adaptable, needs not rely upon the implementation of optical module producer, all devices manufacturer can voluntarily use in its product, and implementation is simple and reliable, smaller to cost impact.In actual application, it to fault handling time is shortened, reduces customer complaint and is of great significance.
Description
Technical field
The invention belongs to the communications fields, and in particular to a kind of optical module received optical power overload protective device and protection side
Method.
Background technique
With internet and the fast development of data service, the information content transmitted in optical fiber is increasing, in big span light
Short -board effect after problem displays again.Simple solution is that short-range optical module is replaced with to long range or overlength
The optical module of distance, but the farther optical module of this kind of transmission range, it is longer apart from upper band to compensate to need bigger output power
The decaying come.However the signal laser of high-power output, usually receiving end can be caused to overload in misoperation and burn light to connect
Mouthful, difficulty is increased to the recovery of business.
In view of the above problems, existing guard method is mainly: for being transformed inside optical module, increasing optical power inspection
Slowdown monitoring circuit and light decay circuit.After detecting optical power overload, corresponding light decay is connected according to overload degree, is output to down it
The optical signal of level-one normally receives in range at it.
The advantages of guard method is the adaptive different input optical power of energy, and not will lead to service disconnection, but insufficient
Place is: 1. increase interlock circuit inside optical module, increase optical mode block cost, this carrys out the product of many cost sensitivities
It says, cannot receive, especially end product.2. optical module inner space is limited, increasing circuit undoubtedly will increase PCB design hardly possible
Degree, it is all larger on influences such as parts selection, placement-and-routings, it is overall to realize complexity.3. the optical module largely run in pair existing net,
Can not Reconstruction in field, versatility is bad.
Summary of the invention
In order to overcome the problems referred above, the present invention provides a kind of optical module received optical power overload protective device and method, can fit
A variety of different optical communication systems are answered, it is maximized to reduce because being damaged caused by overloading optical module.
A kind of optical module received optical power overload protective device, comprising:
Optical module unit is read by supporting one or more optical modules of 8472 agreement of SFF to form by its I2C interface
Optical power related register in its internal E2PROM；
Optical power detection unit, read in optical module unit the optical power of optical module and with preset alarming threshold ratio
Compared with；
Alarm Unit after the alarm command for receiving optical power detection unit, issues audible and visual alarm；
Control unit carries out on-off to the power circuit of related optical module according to the signal that optical power detection unit is sent
Control；
Optical module power supply unit is made of the power supply chip for having switch enabled, right according to the signal that control unit issues
Each optical module individually controls its power-on and power-off.
Further, the optical power detection unit includes processor and I2C expanded circuit group.
Further, the power supply of each optical module is completed by independent power module DC/DC or LDO, and power module enables
Control terminal is connected to the output end of metal-oxide-semiconductor control circuit.
Further, the metal-oxide-semiconductor control circuit is made of several metal-oxide-semiconductors and resistance, and effect is to export EPLD
Control signal level be converted to the level to match with power module enable end, while in power up default close power supply
Module.
A kind of optical module received optical power overload protection method, comprising the following steps:
Step B1, system electrification, all optical modules control its power remove by control unit；
Step B2, system, which executes, to be initialized and completes；
Step B3 starts timer, after preset timing time reaches, successively executes a wheel light function to all optical modules
Rate detection；
Step B4 judges whether optical module to be measured is in place, for not inserting the port of optical module, leaps to step B9 progress
Next Port detecting thens follow the steps B5 if optical module is in place；
Step B5, judges whether optical module to be measured has reported overload before this；
For having reported the optical module of overload, electricity has been descended in process before this, it is next that step B9 progress can be leapt to
Port detecting；If not reporting overload before, or once overload but processed optical module, then electric treatment is carried out,
See step B6；
Step B6 powers on optical module to be measured, and the received optical power register in its E2PROM is read by I2C interface
Value；
The received optical power read is compared by step B7 with preset overload alarming threshold, if being more than alarming threshold,
B8 is thened follow the steps, if not overloading, thens follow the steps B9；
Step B8 carries out lower electricity to tested optical module, while issuing alarm signal to Alarm Unit；Step is executed after the completion
B9；
Step B9 judges whether the port is last Single port, if being last Single port, epicycle detection terminates,
Step B3 is jumped to below carries out new round detection；If not last Single port, thens follow the steps B10；
Step B10 selects lower Single port, and detects since step B4.
The present invention is adaptable in fact, needs not rely upon the implementation of optical module producer, all devices manufacturer can be in its product
In voluntarily use, and implementation is simple and reliable, smaller to cost impact.In actual application, to shortening troubleshooting
Time reduces customer complaint and is of great significance.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of optical module received optical power overload protective device of the present invention；
Fig. 2 is the circuit connection block diagram of optical module received optical power overload protective device of the present invention；
Fig. 3 is the metal-oxide-semiconductor control circuit schematic diagram of the embodiment of the present invention；
Fig. 4 is the flow chart of optical module received optical power overload protection method in the embodiment of the present invention.
Embodiment
In the following, in conjunction with attached drawing, the present invention will be further described.
Optical module received optical power overload protective device of the present invention includes optical power detection unit 1, control unit 2, optical mode
Block power supply unit 3, Alarm Unit 4, optical module unit 5.
Optical power detection unit 1 is used to read the received optical power in each optical module.It is made of two parts circuit: processor
101 and I2C expanded circuit 102.I2C expanded circuit 102 can be realized using programmable logic chip EPLD, by processor 101
The I2C clock all the way sent out, is distributed as the multipath I 2 C clock of corresponding optical mode number of blocks in EPLD, these every roads of I2C clock are equal
If switch, default is closed, and is only opened when processor 101 accesses the road optical module；The I2C data line that processor 101 is sent out, then
After EPLD transparent transmission, it is multiplexed on multichannel optical module.
After optical power detection unit 1 reads optical power, compared with preset alarming threshold, if being more than alarming threshold,
Lower electricity is carried out to optical module unit 5 by control unit 2, while warning information is reported to Alarm Unit 4.
Control unit 2, the signal that can be sent according to optical detecting unit 1, to the power circuit of related optical module unit 5 into
The control of row on-off.In Board Power up, the default of control unit 2 closes optical module power supply unit 3, prevents Board Power up and initialization
In the process, optical module unit 5 is damaged or is burnt because of received optical power overload.
Optical module power supply unit 3 is made of the power supply chip for having switch enabled.It, can be to light according to 2 signal of control unit
Each module in modular unit 5 individually controls its power-on and power-off.
Alarm Unit 4, after the alarm command for receiving the transmission of optical power detection unit 1, sending audible and visual alarm, while after
Platform display alarm reason reminds maintenance personnel to handle overload problem in time, such as increases light decay.
Optical module unit 5 is made of one or more optical modules, need to support 8472 agreement of SFF, in internal E2PROM
Optical power register value can be read by I2C interface.
Fig. 2 is the circuit connection block diagram of the embodiment of the present invention, and bottom part is processor, and I2C bus is through in EPLD
It is connected on each optical module after the I2C expanded circuit extension in portion.I2C clock control signal CTRL passes through LOCAL_BUS by processor
The clock-control register inside EPLD is write to realize.The power supply of each optical module is complete by independent power module DC/DC or LDO
At the enabled control terminal of power module is connected to the output of metal-oxide-semiconductor control circuit, and level change in EPLD by making can control
Register is controlled.Make to can control the enabled control terminal that register initial value default closes power module when powering on.Normal
After work, then operation is opened or closed to it by LOCAL_BUS accordingly by processor.
Fig. 3 is the metal-oxide-semiconductor control circuit schematic diagram of the embodiment of the present invention.Each optical module needs individual metal-oxide-semiconductor control
Circuit.The circuit is made of two metal-oxide-semiconductors and several resistance, effect be by EPLD output control signal level be converted to
The level that power module enable end matches, while default closes power module in power up.
Optical module received optical power overload protection method in the embodiment of the present invention, steps are as follows:
Step B1, system electrification, all optical modules control its power remove by control unit.
Step B2, system, which executes, to be initialized and completes.
Step B3 starts timer, after preset timing time reaches, successively executes a wheel light function to all optical modules
Rate detection.
Step B4 judges whether optical module to be measured is in place, for not inserting the port of optical module, leaps to step B9 progress
Next Port detecting thens follow the steps B5 if optical module is in place.
Step B5, judges whether optical module to be measured has reported overload before this.For having reported the optical module of overload, flow before this
Electricity has been descended in journey, can be leapt to step B9 and be carried out next Port detecting.If not reporting overload before, or once
Overload but processed optical module, then carry out electric treatment, see step B6.
Step B6 powers on optical module to be measured, and the received optical power register in its E2PROM is read by I2C interface
Value.
The received optical power read is compared by step B7 with preset overload alarming threshold, if being more than alarming threshold,
B8 is thened follow the steps, if not overloading, thens follow the steps B9.
It when this is in judgement overload, can also be refined, such as setting two-stage thresholding, first order thresholding is general accuses
Alert, second level thresholding is high severity alarm, when reaching minor alarm and not up to high severity alarm, only issues minor alarm signal, but
It is not related to black out modular power source；When reaching high severity alarm, closes optical module power supply and issue high severity alarm.It is simple to describe, this
Embodiment is only provided with a rank to alarm.
Step B8 carries out lower electricity to tested optical module, while issuing alarm signal to Alarm Unit.Step is executed after the completion
B9。
Step B9 judges whether the port is last Single port, if being last Single port, epicycle detection terminates,
Step B3 is jumped to below carries out new round detection；If not last Single port, thens follow the steps B10.
Step B10 selects lower Single port, and detects since step B4.
A kind of optical module received optical power overload protection method of the present invention is described in detail above, for
Those of ordinary skill in the art, thought according to an embodiment of the present invention, have in specific embodiments and applications
Change place, the contents of this specification are not to be construed as limiting the invention.
All above-mentioned this intellectual properties of primarily implementation, there is no this new products of implementation of setting limitation other forms
And/or new method.Those skilled in the art will utilize this important information, above content modification, to realize similar execution feelings
Condition.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
Claims (5)
1. a kind of optical module received optical power overload protective device characterized by comprising
Optical module unit is read in it by supporting one or more optical modules of 8472 agreement of SFF to form by its I2C interface
Optical power related register in portion E2PROM；
Optical power detection unit reads in optical module unit the optical power of optical module and compared with preset alarming threshold；
Alarm Unit after the alarm command for receiving optical power detection unit, issues audible and visual alarm；
Control unit carries out on-off control to the power circuit of related optical module according to the signal that optical power detection unit is sent；
Optical module power supply unit is made of the power supply chip for having switch enabled, according to the signal that control unit issues, to each
Optical module individually controls its power-on and power-off.
2. a kind of optical module received optical power overload protective device according to claim 1, which is characterized in that the light
Power detecting unit includes processor and I2C expanded circuit group.
3. a kind of optical module received optical power overload protective device according to claim 1, which is characterized in that each optical mode
The power supply of block is completed by independent power module DC/DC or LDO, and the enabled control terminal of power module is connected to metal-oxide-semiconductor control circuit
Output end.
4. a kind of optical module received optical power overload protective device according to claim 3, which is characterized in that described
Metal-oxide-semiconductor control circuit is made of several metal-oxide-semiconductors and resistance, effect be by EPLD output control signal level be converted to
The level that power module enable end matches, while default closes power module in power up.
5. a kind of optical module received optical power overload protection method, which comprises the following steps:
Step B1, system electrification, all optical modules control its power remove by control unit；
Step B2, system, which executes, to be initialized and completes；
Step B3 starts timer, after preset timing time reaches, successively executes wheel optical power inspection to all optical modules
It surveys；
Step B4 judges whether optical module to be measured is in place, and for not inserting the port of optical module, it is next to leap to step B9 progress
Port detecting thens follow the steps B5 if optical module is in place；
Step B5, judges whether optical module to be measured has reported overload before this；
For having reported the optical module of overload, electricity has been descended in process before this, step B9 can be leapt to and carry out lower Single port
Detection；If not reporting overload before, or once overload but processed optical module, then electric treatment is carried out, sees step
Rapid B6；
Step B6 powers on optical module to be measured, and the received optical power register value in its E2PROM is read by I2C interface；
The received optical power read is compared by step B7 with preset overload alarming threshold, if being more than alarming threshold, is held
Row step B8 thens follow the steps B9 if not overloading；
Step B8 carries out lower electricity to tested optical module, while issuing alarm signal to Alarm Unit；Step B9 is executed after the completion；
Step B9 judges whether the port is last Single port, if being last Single port, epicycle detection terminates, below
It jumps to step B3 and carries out new round detection；If not last Single port, thens follow the steps B10；
Step B10 selects lower Single port, and detects since step B4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567726.8A CN109450530A (en) | 2018-12-21 | 2018-12-21 | A kind of optical module received optical power overload protective device and guard method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811567726.8A CN109450530A (en) | 2018-12-21 | 2018-12-21 | A kind of optical module received optical power overload protective device and guard method |
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| CN109450530A true CN109450530A (en) | 2019-03-08 |
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| CN201811567726.8A Pending CN109450530A (en) | 2018-12-21 | 2018-12-21 | A kind of optical module received optical power overload protective device and guard method |
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| CN111510204A (en) * | 2020-04-24 | 2020-08-07 | 武汉光迅科技股份有限公司 | Protection circuit, protection method and optical module |
| CN115065420A (en) * | 2022-05-30 | 2022-09-16 | 新华三技术有限公司 | Power supply control method, access device and network device |
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Application publication date: 20190308 |