CN208337583U - The signal loss detection circuit and device of four-way optical module - Google Patents
The signal loss detection circuit and device of four-way optical module Download PDFInfo
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- CN208337583U CN208337583U CN201820954970.9U CN201820954970U CN208337583U CN 208337583 U CN208337583 U CN 208337583U CN 201820954970 U CN201820954970 U CN 201820954970U CN 208337583 U CN208337583 U CN 208337583U
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Abstract
The utility model discloses a kind of signal loss detection circuit of four-way optical module and device, the signal loss detection circuit of the four-way optical module includes voltage conversion circuit, MCU and dropout state output device；Voltage conversion circuit acquires the current signal of four-way optical module output, and current signal is converted into voltage signal, MCU carries out AD sampling to voltage signal, and judge whether four-way optical module has occurred dropout according to the AD value of sampling and preset dropout judgment threshold, and control dropout state output device when dropout occurs and output is carried out to dropout state show；The signal input part of voltage conversion circuit is connect with the signal output end of the light-receiving component of four-way optical module, and the signal output end of voltage conversion circuit and the ADC interface of MCU connect, and the I/O port of dropout state output device and MCU connect.The utility model improves the judgment accuracy to four-way optical module dropout.
Description
Technical field
The utility model relates to the signal loss detection circuit of optical module field more particularly to a kind of four-way optical module and
Device.
Background technique
In four-way optical module, in 40G QSFP+LR4 optical module, transmitting terminal and receiving end are all four-way 10G speed
Rate CWDM (CWDM, Coarse Wavelength Division Multiplexing, coarse wavelength division multiplexer device) device passes through
WDM (WDM, Wavelength Division Multiplexing, wavelength-division multiplex) by signal together with, in order to save space
And power consumption is reduced, receives link is using improve ROSA (ROSA, Receiver Optical Subassembly, light-receiving component)
Output voltage swing and the scheme of limiting amplifier is not added so that product can not provide LOS (LOS, Loss Of Signal, signal
Lose) detection function.
Since 40G QSFP+LR4 optical module has the reception of 4 tunnels, in order to avoid occupying multi-pipe pin, do not have in QSFP+ agreement
There is regulation hardware LOS output pin, defines only software LOS instruction state.In the prior art, four-way optical module or do not have
LOS is arranged to indicate function or read by DDM (DDM, Digital Diagnostic Monitoring, digital diagnosis function)
It takes received optical power to judge the los state of optical module, i.e., judges whether optical module occurs by detection received optical power DDM value
Dropout, such scheme is not since the Stability and veracity of received optical power DDM value is high, so as to cause to four-way light
The judgment accuracy of module los state is lower；Also, the prior art judges above by detection received optical power DDM value
The scheme whether optical module has occurred dropout is realized by software algorithm, and due to that can draw when software the Fitting Calculation
Enter error, to further affect the judgment accuracy to four-way optical module dropout.
Utility model content
The main purpose of the utility model is to provide a kind of signal loss detection circuits of four-way optical module, it is intended to mention
Judgment accuracy of the height to four-way optical module dropout.
To achieve the goals above, the utility model provides a kind of signal loss detection circuit of four-way optical module, institute
The signal loss detection circuit for stating four-way optical module includes voltage conversion circuit, MCU and dropout state output device；Its
In:
The voltage conversion circuit, the electric current letter that the light-receiving component for acquiring the four-way optical module is exported
Number, and the current signal is converted into voltage signal；
The MCU for carrying out AD sampling to the voltage signal, and loses according to the AD value and preset signal that sample
Judgment threshold is lost, judges whether the four-way optical module has occurred dropout, and determining the four-way optical module
The corresponding control signal of output is lost to the dropout state output device with controlling the signal when dropout has occurred
Mistake state output device carries out output to the dropout state of the four-way optical module and shows；
The light-receiving component of the four-way optical module, for being converted to the optical signal for being input to the light-receiving component
The current signal；
The signal of the light-receiving component of the signal input part of the voltage conversion circuit and the four-way optical module exports
End connection, the signal output end of the voltage conversion circuit are connect with the ADC interface of the MCU, and the dropout state is defeated
Device is connect with the I/O port of the MCU out.
Preferably, the signal loss detection circuit of the four-way optical module further include:
Sampling hold circuit, the voltage signal for exporting to the voltage conversion circuit carries out signal holding, so that institute
Voltage signal is stated to keep stablizing；
The sampling hold circuit is connected between the output end of the voltage conversion circuit and the ADC interface of the MCU.
Preferably, the signal loss detection circuit of the four-way optical module further include:
Filter circuit, the voltage signal for exporting to the sampling hold circuit is filtered, so as to be input to
The voltage signal of the MCU is completely stable voltage signal；
The filter circuit is connected between the sampling hold circuit and the ADC interface of the MCU.
Preferably, the dropout state output device is indicator light, and the MCU is determining the four-way optical mode
The corresponding control signal of output is lighted to the indicator light with controlling the indicator light when dropout has occurred in block.
Preferably, the dropout state output device is buzzer, and the MCU is determining the four-way optical mode
The corresponding control signal of output is to the buzzer when dropout has occurred in block, to control the buzzer sounding.
In addition, to achieve the above object, the utility model also provides a kind of signal loss detection dress of four-way optical module
It sets, the signal loss detection device of the four-way optical module includes the signal loss detection of four-way optical module as described above
Circuit.
The signal loss detection circuit of the utility model four-way optical module passes through voltage conversion circuit for four-way optical mode
The current signal that the light-receiving component of block is exported is converted to voltage signal, then carries out AD to the voltage signal by MCU
The AD value and preset dropout judgment threshold that sampling, MCU and basis sample, judge whether the four-way optical module is sent out
Dropout has been given birth to, and has exported corresponding control signal to institute when determining the four-way optical module and dropout having occurred
Dropout state output device is stated, to control the dropout state output device to the signal of the four-way optical module
Lost condition carries out output and shows, i.e., the utility model is the signal realized by hardware circuit to the four-way optical module
Acquisition, processing and analysis judgement, greatly improve the judgment accuracy to four-way optical module dropout；Also, this reality
Also have the advantages that structure simply and is easily realized with novel.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the functional module signal of the signal loss detection circuit first embodiment of the utility model four-way optical module
Figure；
Fig. 2 is the functional module signal of the signal loss detection circuit second embodiment of the utility model four-way optical module
Figure；
Fig. 3 is the functional module signal of the signal loss detection circuit 3rd embodiment of the utility model four-way optical module
Figure.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, without
It can be interpreted as its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.It defines as a result,
The feature of " first ", " second " can explicitly or implicitly include at least one of the features.In addition, between each embodiment
Technical solution can be combined with each other, but must based on can be realized by those of ordinary skill in the art, work as technical solution
Combination there is conflicting or cannot achieve when and will be understood that the combination of this technical solution is not present, it is also practical not new at this
Within the protection scope that type requires.
The utility model provides a kind of signal loss detection circuit of four-way optical module, for improving to four-way optical mode
The judgment accuracy that block signal is lost.
Fig. 1 is the functional module signal of the signal loss detection circuit first embodiment of the utility model four-way optical module
Figure, referring to Fig.1, in the present embodiment, the signal loss detection circuit 100 of the four-way optical module include voltage conversion circuit 101,
MCU 102 and dropout state output device 103.
Wherein, the voltage conversion circuit 101, what the light-receiving component 200 for acquiring four-way optical module was exported
Current signal, and the current signal is converted into voltage signal；
The MCU 102, the voltage signal for exporting to the voltage conversion circuit 101 carry out AD sampling, and
According to the AD value and preset dropout judgment threshold sampled, judge whether the four-way optical module has occurred signal and lose
It loses, and exports corresponding control signal to the dropout when determining the four-way optical module and dropout having occurred
State output device 103, to control the dropout state output device 103 to the dropout of the four-way optical module
State carries out output and shows；
In the present embodiment, the light-receiving component 200 of the four-way optical module, for the light-receiving component will to be input to
200 optical signal is converted to the current signal.
It is understood that in the present embodiment, the preset dropout judgment threshold can according to the actual situation into
Row setting judges the four-way when the AD value that the MCU 102 is sampled is less than the preset dropout judgment threshold
Dropout has occurred in road optical module, when the AD value that the MCU 102 is sampled is greater than or equal to the preset dropout
When judgment threshold, judge that dropout does not occur for the four-way optical module.The present embodiment determines described in the MCU 102
When dropout has occurred in four-way optical module, the MCU 102 exports corresponding control signal to the dropout state
Output device 103, to control the dropout state output device 103 to the dropout state of the four-way optical module
Output is carried out to show.
Specifically, in the present embodiment, the signal input part of the voltage conversion circuit 101 and the four-way optical module
The signal output end of light-receiving component 200 connects, and the signal output end of the voltage conversion circuit 101 is with the MCU's 102
ADC interface connection, the dropout state output device 103 are connect with the I/O port of the MCU 102.
Further, referring to Fig. 2, first of the signal loss detection circuit 100 based on above-mentioned four-way optical module is implemented
Example, in the second embodiment of the signal loss detection circuit 100 of the utility model four-way optical module, the four-way optical module
Signal loss detection circuit 100 further include sampling hold circuit 104, the sampling hold circuit 104, for the voltage
The voltage signal that conversion circuit 101 exports carries out signal holding, so that the voltage signal keeps stablizing.In the present embodiment, institute
It states sampling hold circuit 104 and is connected to the signal output end of the voltage conversion circuit 101 and the ADC interface of the MCU 102
Between, i.e., the signal input part of the described sampling hold circuit 104 is connect with the signal output end of the voltage conversion circuit 101,
The signal output end of the sampling hold circuit 104 is connect with the ADC interface of the MCU 102.
Further, referring to Fig. 3, second of the signal loss detection circuit 100 based on above-mentioned four-way optical module is implemented
Example, in the 3rd embodiment of the signal loss detection circuit 100 of the utility model four-way optical module, the four-way optical module
Signal loss detection circuit 100 further include filter circuit 105, the filter circuit 105 be used for the sampling hold circuit
The voltage signal of 104 outputs is filtered, so that the voltage signal for being input to the ADC interface of the MCU 102 is clean
Stable voltage signal.In the present embodiment, the filter circuit 105 is connected to the sampling hold circuit 104 and the MCU
Between 102 ADC interface, i.e., the signal output end of the described sampling hold circuit 104 is through the filter circuit 105 and MCU
102 ADC interface connection.
The dropout state output device 103 is indicator light, and the MCU 102 is determining the four-way optical mode
When dropout has occurred in block, corresponding control signal is exported to the indicator light, is lighted with controlling the indicator light, i.e. this reality
Apply in example when the indicator light be illuminating state when, illustrate that dropout has occurred in the four-way optical module.It is understood that
It is that in other embodiments, the dropout state output device 103 can also be buzzer, when the dropout shape
When state output device 103 is buzzer, the MCU 102 when determining the four-way optical module dropout having occurred,
The corresponding control signal of output is to the buzzer, to control the buzzer sounding, i.e., when the buzzer sounding, explanation
Dropout has occurred in the four-way optical module.
The signal loss detection circuit of the utility model four-way optical module, firstly, the voltage conversion circuit 101 acquires
The current signal that the light-receiving component 200 of the four-way optical module is exported, and the current signal is converted into voltage letter
Number, due to the same light-receiving component 200 be substantially to the responsiveness of optical signal it is fixed, described in the light input of varying strength
Electric current is converted optical signals to by the photodiode (not shown) in the light-receiving component 200 when light-receiving component 200
Signal, and the response current can follow institute's input optical signal luminous intensity and linear change；Then, the sampling hold circuit
The voltage signal that 104 pairs of voltage conversion circuits 101 export carries out signal holding, so that the voltage signal keeps stablizing；
Then, the voltage signal that the filter circuit 105 exports the sampling hold circuit 104 is filtered, so that input
Voltage signal to the ADC interface of the MCU 102 is completely stable voltage signal；Finally, 102 couples of the MCU inputs it
The voltage signal of ADC interface carries out AD sampling, and according to the AD value and preset dropout judgment threshold sampled, judgement
Whether the four-way optical module has occurred dropout, and when determining the four-way optical module dropout having occurred
The corresponding control signal of output is to the dropout state output device 103 (indicator light or buzzer), to control the letter
Number lost condition output device 103 carries out output to the dropout state of the four-way optical module and shows.
It is exported by the light-receiving component 200 that signal source in this present embodiment comes from the four-way optical module
Current signal (response current of the i.e. described light-receiving component 200), the current signal is most original and untreated mistake
Signal, therefore the accuracy of the signal source in the present embodiment and sensitivity are all very high；The present embodiment is again described due to being provided with
Sampling hold circuit 104, therefore the present embodiment can guarantee that the MCU 102 is adjudicating whether the four-way optical module occurs
Output level will not be caused unstable and the accuracy of influence judgement due to the variation fluctuation that do not stop of input signal when dropout,
And the present embodiment can also be by the flexible setting of the sampling retention time to the sampling hold circuit 104, with simultaneous simultaneously
The sensitivity of signal stabilization and response is cared for, and then realizes that stable alarm is sluggish；Meanwhile the filtered electrical in the present embodiment
Road 105 can guarantee that the voltage signal for being input to the ADC interface of the MCU 102 is completely stable voltage signal, so that this
Embodiment is to the setting of the preset dropout judgment threshold and the judgement of the dropout to the four-way optical module
It is all more accurate；Also, the signal loss detection circuit of the present embodiment four-way optical module, which is acted upon by temperature changes, also to be compared
It is small, to further increase the judgment accuracy to four-way optical module dropout.
In conclusion the signal loss detection circuit of the present embodiment four-way optical module is to be realized by hardware circuit pair
Signal acquisition, processing and the analysis judgement of the four-way optical module, greatly improve to four-way optical module dropout
Judgment accuracy；Also, the signal loss detection circuit of the present embodiment four-way optical module also has structure simple and easily real
Existing advantage.
The utility model also provides a kind of signal loss detection device of four-way optical module, the letter of the four-way optical module
Number loss detection device includes the signal loss detection circuit of four-way optical module, the signal loss detection of the four-way optical module
The structure of circuit can refer to above-described embodiment, and details are not described herein.Naturally, due to the four-way optical module of the present embodiment
Signal loss detection device use above-mentioned four-way optical module signal loss detection circuit technical solution, therefore this four
The signal loss detection device of channel optical module has all beneficial of signal loss detection circuit of above-mentioned four-way optical module
Effect.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of signal loss detection circuit of four-way optical module, which is characterized in that the signal of the four-way optical module is lost
Slowdown monitoring circuit of lapsing includes voltage conversion circuit, MCU and dropout state output device；Wherein:
The voltage conversion circuit, the current signal that the light-receiving component for acquiring the four-way optical module is exported, and
The current signal is converted into voltage signal；
The MCU for carrying out AD sampling to the voltage signal, and sentences according to the AD value and preset dropout that sample
Disconnected threshold value, judges whether the four-way optical module has occurred dropout, and occurs determining the four-way optical module
The corresponding control signal of output is to the dropout state output device when dropout, to control the dropout shape
State output device carries out output to the dropout state of the four-way optical module and shows；
The light-receiving component of the four-way optical module, it is described for being converted to the optical signal for being input to the light-receiving component
Current signal；
The signal output end of the light-receiving component of the signal input part of the voltage conversion circuit and the four-way optical module connects
It connects, the signal output end of the voltage conversion circuit is connect with the ADC interface of the MCU, the dropout state output dress
It sets and is connect with the I/O port of the MCU.
2. the signal loss detection circuit of four-way optical module as described in claim 1, which is characterized in that the four-way light
The signal loss detection circuit of module further include:
Sampling hold circuit, the voltage signal for exporting to the voltage conversion circuit carries out signal holding, so that the electricity
Signal is pressed to keep stablizing；
The sampling hold circuit is connected between the output end of the voltage conversion circuit and the ADC interface of the MCU.
3. the signal loss detection circuit of four-way optical module as claimed in claim 2, which is characterized in that the four-way light
The signal loss detection circuit of module further include:
Filter circuit, the voltage signal for exporting to the sampling hold circuit are filtered, so as to be input to described
The voltage signal of MCU is completely stable voltage signal；
The filter circuit is connected between the sampling hold circuit and the ADC interface of the MCU.
4. the signal loss detection circuit of four-way optical module as claimed any one in claims 1 to 3, which is characterized in that
The dropout state output device is indicator light, and the MCU loses determining the four-way optical module signal has occurred
Corresponding control signal is exported when mistake to the indicator light, is lighted with controlling the indicator light.
5. the signal loss detection circuit of four-way optical module as claimed any one in claims 1 to 3, which is characterized in that
The dropout state output device is buzzer, and the MCU loses determining the four-way optical module signal has occurred
Corresponding control signal is exported when mistake to the buzzer, to control the buzzer sounding.
6. a kind of signal loss detection device of four-way optical module, which is characterized in that the signal of the four-way optical module is lost
Lose the signal loss detection circuit that detection device includes four-way optical module described in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820954970.9U CN208337583U (en) | 2018-06-20 | 2018-06-20 | The signal loss detection circuit and device of four-way optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820954970.9U CN208337583U (en) | 2018-06-20 | 2018-06-20 | The signal loss detection circuit and device of four-way optical module |
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| CN208337583U true CN208337583U (en) | 2019-01-04 |
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| CN201820954970.9U Active CN208337583U (en) | 2018-06-20 | 2018-06-20 | The signal loss detection circuit and device of four-way optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600626A (en) * | 2021-03-04 | 2021-04-02 | 深圳市迅特通信技术股份有限公司 | Optical module and communication device |
-
2018
- 2018-06-20 CN CN201820954970.9U patent/CN208337583U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600626A (en) * | 2021-03-04 | 2021-04-02 | 深圳市迅特通信技术股份有限公司 | Optical module and communication device |
| CN112600626B (en) * | 2021-03-04 | 2021-06-08 | 深圳市迅特通信技术股份有限公司 | Optical module and communication device |
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