CN112543053A - BOB online correction method based on automatic calibration process - Google Patents
BOB online correction method based on automatic calibration process Download PDFInfo
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- CN112543053A CN112543053A CN202011304747.8A CN202011304747A CN112543053A CN 112543053 A CN112543053 A CN 112543053A CN 202011304747 A CN202011304747 A CN 202011304747A CN 112543053 A CN112543053 A CN 112543053A
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- 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
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- 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
-
- 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
- H04B10/07953—Monitoring or measuring OSNR, BER or Q
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Abstract
The invention relates to a BOB online correction method based on an automatic calibration process, which is used for calibrating and repairing a BOB module which is subjected to error calibration, wherein the automatic calibration process comprises the following steps: s10: initial assignment, namely presetting initial parameters of the optical drive chip; s20: TX reporting calibration, namely adjusting the output optical power of a register; s30: adjusting the extinction ratio to enable an initial Modlut temperature compensation meter; s40: adjusting a temperature register, and completing the operation of each temperature point by adopting a preset algorithm to achieve the final Modlut temperature compensation enabling; s50: summing to generate a check bit, and storing and exiting; in step S30, the following steps are inserted: pre-storing an initial temperature compensation value corresponding to the BOB module which is calibrated correctly; the BOB module is automatically triggered to call the initial temperature compensation value after being electrified; and carrying out extinction ratio calibration again. The invention can realize the online BOB calibration correction without a factory.
Description
Technical Field
The invention relates to the technical field of calibration of optical modem products, in particular to a BOB online correction method based on an automatic calibration process.
Background
Currently, the mainstream domestic optical cat product hardware in the industry adopts a design mode of a BOB (bosa On board), wherein a BOB circuit module needs to perform special calibration work to realize the verification of optical parameters based On an optical drive scheme and a working mechanism of a light source device.
A conventional BOB auto-calibration procedure generally includes the following steps:
the first step is as follows: electrifying the data (optical power, report, temperature compensation table and the like) of a test register of the current BOB circuit module;
the second step is that: comparing the target value range, adjusting 0 x 135 register to adjust the output light power, calibrating TX to report;
the third step: adjusting a register to enable an initial Modlut temperature compensation meter and adjust the extinction ratio to reach a target value;
the fourth step: reading a temperature register, sampling temperature points, calculating a scaling coefficient of an initial Modlut temperature compensation table based on the current temperature point, completing the operation of 105 temperature points based on an algorithm, and performing final Modlut temperature compensation enabling after the operation is completed;
the fifth step: switching a register to finish RX calibration, RX optical power regulation calibration reporting, sensitivity testing and LOS alarm testing in sequence;
and a sixth step: and summing to generate a check bit, and encrypting, storing and exiting.
Equipment manufacturers often encounter the problem that optical parameter calibration is not accurately performed according to a BOSA device due to various reasons (personnel misoperation, untimely system data synchronization, production measurement BUG and the like) in the production and manufacturing process, so that the indexes of optical interfaces of equipment leaving a factory are seriously not met relevant technical specifications, and further the use of actual users is influenced. Particularly, in the third step, an initial temperature compensation step is enabled, and in a normal case, different initial temperature compensations are used correspondingly according to different BOSA devices used in production. If the production process is abnormal, and initial temperature compensation errors are caused, the calibration is in wrong calibration. And negative brand influence is brought to the product, and even the economic loss of batch reworking is called back.
Disclosure of Invention
Therefore, a need exists for an online BOB correction method based on an automatic calibration process, which can provide an online emergency remedy mode in case of an abnormal condition in the production process of a product, and does not need to recall the product which is subjected to the wrong calibration.
In order to achieve the above purpose, the invention adopts the following technical scheme.
The invention provides a BOB on-line correction method based on an automatic calibration process, which is used for calibrating and repairing a BOB module which is subjected to error calibration, wherein the automatic calibration process comprises the following steps:
s10: initial assignment, namely presetting initial parameters of the optical drive chip;
s20: TX reporting calibration, namely adjusting the output optical power of a register;
s30: adjusting the extinction ratio to enable an initial Modlut temperature compensation meter;
s40: adjusting a temperature register, and completing the operation of each temperature point by adopting a preset algorithm to achieve the final Modlut temperature compensation enabling;
s50: summing to generate a check bit, and storing and exiting;
in step S30, the following steps are inserted:
s31: pre-storing an initial temperature compensation value corresponding to the BOB module which is calibrated correctly;
s32: the BOB module is automatically triggered to call the initial temperature compensation value after being electrified;
s33: and carrying out extinction ratio calibration again.
Preferably, step S33 specifically includes the steps of:
judging whether the BOB module is connected with an extinction ratio machine or not;
if so, carrying out extinction ratio calibration by adopting an extinction ratio machine;
otherwise, the extinction ratio is calibrated by adopting a cyclic algorithm.
Preferably, the step of calibrating the extinction ratio by using a round robin algorithm comprises:
s1: cyclically reading the Bias current of the BOB module;
s2: carrying out distribution statistics on the normal distribution relation between the Bias current and the extinction ratio, and searching for a Bias common factor in a target extinction ratio range;
s3: judging whether the Bias current is in a target range;
s4: if yes, directly writing the extinction ratio corresponding to the Bias common factor into a register;
s5: if not, repeatedly executing the steps S1-S3;
s6: judging whether the cycle number is more than 15;
s7: if yes, the target value of the extinction ratio is directly written into the register.
Preferably, after the step S40 and before the step S50, the method further comprises the following steps:
s60: RX reports the calibration, i.e. the input optical power parameter of the register is adjusted.
Preferably, after the step S40 and before the step S50, the method further comprises the following steps:
s70: and (4) calibrating sensitivity and LOS alarm, namely adjusting the sensitivity of a register and LOS alarm parameters.
Preferably, the step S50 further includes the steps of:
and generating a repair check bit and performing repair identification.
According to the invention, the initial temperature compensation value is prestored, the BOB module is automatically triggered and called after being electrified, and extinction ratio calibration is carried out again, so that the error calibration process which originally causes the optical parameter abnormity of the BOB module is corrected, a program can be operated to carry out self-correction in the starting process of the network optical modem, normal equipment functions are returned, and economic loss caused by batch recalling and reworking is avoided.
Drawings
Fig. 1 is a schematic flow chart of a BOB online correction method based on an automatic calibration process in this embodiment.
The implementation of the objects of the present invention and their functions and principles will be further explained in the detailed description with reference to the attached drawings.
Detailed Description
The following further description is made with reference to the drawings and specific embodiments.
Introduction of terms of professionalism:
extinction ratio: it means the ratio of the optical power P1 of the light source device when emitting the full "1" code to the optical power P0 of the light source device when emitting the full "0" code. The extinction ratio of the light source device will directly affect the sensitivity of the receiver, and should generally be greater than 10dB in order not to significantly degrade the sensitivity of the receiver.
And (4) TX reporting: and reporting and testing the output power.
RX reporting: and reporting and testing the input power.
LOS: loss Of Signal.
As shown in fig. 1, the present embodiment provides a BOB online correction method based on an automatic calibration process, which is used for performing calibration repair on a BOB module having an error calibration, where the automatic calibration process includes the following steps:
s10: initial assignment, namely presetting initial parameters of the optical drive chip;
s20: TX reporting calibration, namely adjusting the output optical power of a register;
s30: adjusting the extinction ratio to enable an initial Modlut temperature compensation meter;
s40: adjusting a temperature register, and completing the operation of each temperature point by adopting a preset algorithm to achieve the final Modlut temperature compensation enabling;
s50: and summing to generate a check bit, and storing and exiting.
In step S30, it is necessary to refer to the temperature compensation value of the BOSA device that has been calibrated correctly under normal conditions, but in the actual production test process, various reasons (such as misoperation of personnel, untimely synchronization of system data, BUG of production test, etc.) often cause an error in the initial temperature compensation value, and finally cause an error in calibration.
Therefore, on the premise of steps S10 to S30, the present embodiment inserts the following steps in step S30:
s31: pre-storing an initial temperature compensation value corresponding to the BOB module which is calibrated correctly;
s32: the BOB module is automatically triggered to call the initial temperature compensation value after being electrified;
s33: and carrying out extinction ratio calibration again.
The initial temperature compensation value and the calling function can be stored in a software patch by adopting a plug-in upgrading mode, triggering calling is carried out in the power-on process of the equipment, and extinction ratio calibration is carried out again.
Step S33 specifically includes the steps of:
judging whether the BOB module is connected with an extinction ratio machine or not;
if so, carrying out extinction ratio calibration by adopting an extinction ratio machine;
otherwise, the extinction ratio is calibrated by adopting a cyclic algorithm.
If the equipment does not exit the production measurement calibration process and is connected with the extinction ratio machine, the extinction ratio machine can be used for recalibrating the extinction ratio; if the equipment is put into operation, the extinction ratio calibration is carried out by adopting a loop algorithm.
In this embodiment, the step of calibrating the extinction ratio by using the loop algorithm mainly includes:
s1: cyclically reading the Bias current of the BOB module;
s2: carrying out distribution statistics on the normal distribution relation between the Bias current and the extinction ratio, and searching for a Bias common factor in a target extinction ratio range;
s3: judging whether the Bias current is in a target range;
s4: if yes, directly writing the extinction ratio corresponding to the Bias common factor into a register;
s5: if not, repeatedly executing the steps S1-S3;
s6: judging whether the cycle number is more than 15;
s7: if yes, the target value of the extinction ratio is directly written into the register.
The Bias current is referred to as Bias current, and the Bias common factor is referred to as a normal distribution median value.
Currently, BOSA products mainly include core run and yi liter, and different target values of extinction ratio can be set according to the brand of BOSA products, for example, the target value of core run is set to 50 and the target value of yi liter is set to 60. After the extinction ratio calibration is finished, the Bias current returns to the normal range of 5-15 mA, the extinction ratio returns to the normal range of 8-13 db, and the equipment can be normally used.
Therefore, the method of the embodiment can realize the online BOB calibration correction of the off-factory.
In this embodiment, after step S40 and before step S50, the method further includes the following steps:
s60: RX reports the calibration, i.e. the input optical power parameter of the register is adjusted.
Further, after step S40, before step S50, the method further comprises the steps of:
s70: and (4) calibrating sensitivity and LOS alarm, namely adjusting the sensitivity of a register and LOS alarm parameters.
After the restoration of the temperature compensation is completed through the above loop algorithm, the steps S60 and S70 can be completed in the same way of plug-in operation.
Preferably, the step S50 further includes the steps of:
and generating a repair check bit and performing repair identification.
And after the plug-in operation is finished, executing step S50, namely generating a repair check bit, performing repair identification, and preventing the device from automatically entering the repair plug-in again when the device operates again, so as to cause an infinite loop calibration program.
In summary, the invention pre-stores the initial temperature compensation value, automatically triggers and calls the initial temperature compensation value after the BOB module is powered on, and re-calibrates the extinction ratio, so as to correct the error calibration process which originally causes the optical parameter abnormality of the BOB module, so that the program can be operated to perform self-correction in the starting process of the network optical modem, the normal device function is returned, and the economic loss caused by batch recalling of rework is avoided.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A BOB online correction method based on an automatic calibration process is used for calibrating and repairing a BOB module which has error calibration, and is characterized in that the automatic calibration process comprises the following steps:
s10: initial assignment, namely presetting initial parameters of the optical drive chip;
s20: TX reporting calibration, namely adjusting the output optical power of a register;
s30: adjusting the extinction ratio to enable an initial Modlut temperature compensation meter;
s40: adjusting a temperature register, and completing the operation of each temperature point by adopting a preset algorithm to achieve the final Modlut temperature compensation enabling;
s50: summing to generate a check bit, and storing and exiting;
in step S30, the following steps are inserted:
s31: pre-storing an initial temperature compensation value corresponding to the BOB module which is calibrated correctly;
s32: the BOB module is automatically triggered to call the initial temperature compensation value after being electrified;
s33: and carrying out extinction ratio calibration again.
2. The online correction method of claim 1, characterized in that: step S33 specifically includes the steps of:
judging whether the BOB module is connected with an extinction ratio machine or not;
if so, carrying out extinction ratio calibration by adopting an extinction ratio machine;
otherwise, the extinction ratio is calibrated by adopting a cyclic algorithm.
3. The online correction method of claim 2, characterized in that: the step of calibrating the extinction ratio by adopting a cyclic algorithm comprises the following steps:
s1: cyclically reading the Bias current of the BOB module;
s2: carrying out distribution statistics on the normal distribution relation between the Bias current and the extinction ratio, and searching for a Bias common factor in a target extinction ratio range;
s3: judging whether the Bias current is in a target range;
s4: if yes, directly writing the extinction ratio corresponding to the Bias common factor into a register;
s5: if not, repeatedly executing the steps S1-S3;
s6: judging whether the cycle number is more than 15;
s7: if yes, the target value of the extinction ratio is directly written into the register.
4. The online correction method according to claim 1, wherein after the step S40 and before the step S50, further comprising the steps of:
s60: RX reports the calibration, i.e. the input optical power parameter of the register is adjusted.
5. The online correction method according to claim 4, wherein after the step S40 and before the step S50, further comprising the steps of:
s70: and (4) calibrating sensitivity and LOS alarm, namely adjusting the sensitivity of a register and LOS alarm parameters.
6. An on-line correction method as claimed in any one of claims 1 to 5, characterized in that: the step S50 further includes the steps of:
and generating a repair check bit and performing repair identification.
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Cited By (1)
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| CN117041756A (en) * | 2023-10-09 | 2023-11-10 | 宜宾市华迅光通信有限公司 | Temperature error compensation method for FTTR home gateway BOB module |
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