CN112436888A - Method, device, equipment and medium for adjusting value of selected key attribute of optical module - Google Patents

Method, device, equipment and medium for adjusting value of selected key attribute of optical module Download PDF

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CN112436888A
CN112436888A CN202011272398.6A CN202011272398A CN112436888A CN 112436888 A CN112436888 A CN 112436888A CN 202011272398 A CN202011272398 A CN 202011272398A CN 112436888 A CN112436888 A CN 112436888A
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value
optical module
current value
selected key
key attribute
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CN112436888B (en
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吴锦树
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Ruijie Networks Co Ltd
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • 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
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0775—Performance monitoring and 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
    • H04B10/07955—Monitoring or measuring power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/04—Ageing analysis or optimisation against ageing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/06—Power analysis or power optimisation

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Abstract

The invention provides a method, a device, equipment and a medium for adjusting the value of a selected key attribute of an optical module, wherein the method comprises the following steps: obtaining a current value of a selected key attribute of an optical module, predicting the service life of the optical module according to the current value and a prestored fault threshold of the optical module, if the service life is determined to be smaller than a preset service life threshold, determining an adjustment value of the selected key attribute according to the current value and a prestored standard value of the selected key attribute, and sending the adjustment value to the optical module so that the optical module adjusts the current value according to the adjustment value. In the embodiment of the invention, the service life of the optical module is predicted according to the received current value, and the adjustment value of the selected key attribute is determined when the predicted service life of the optical module is smaller than the preset service life threshold value, so that the optical module is adjusted according to the adjustment value, the occurrence of optical module faults is avoided in advance, the service life of the optical module is effectively prolonged, and the working efficiency of a communication system is favorably improved.

Description

Method, device, equipment and medium for adjusting value of selected key attribute of optical module
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a medium for adjusting a value of a selected key attribute of an optical module.
Background
Along with the rapid development of communication technology and intelligent terminals, the application of high bandwidth and high density is increasing day by day, the traditional copper cable communication system can not meet the requirement of modern communication transmission gradually, and optical cable communication comes along. In the prior art, operation and maintenance of the optical module are implemented by operation and maintenance personnel who perform back check on the fault of the optical module after sensing that communication service is affected, and the optical module is replaced or repaired. The passive operation and maintenance mode causes that the communication service is influenced for a long time, influences the normal operation of the whole communication system and influences the proceeding of the communication process. How to guarantee the operation quality of the optical module and prevent faults is a key problem, so that the realization of automation and intellectualization of operation and maintenance of the optical module is very necessary.
With respect to optical modules, the sff.8472 protocol specifies key attributes of optical modules, including: operating temperature, operating voltage, bias current, received optical power, emitted optical power. In order to realize automatic detection of the optical module, the protocol also provides that each optical module manufacturer can set a normal range of a Digital Diagnostics Monitoring system (DDM), or the DDM can be directly abbreviated as the Digital Diagnostics Monitoring system, and an alarm is given when the key attribute exceeds the corresponding normal range.
After the normal range of the key attributes in the DDM is set, the currently acquired key attributes can be compared with the normal range set in the DDM, the method lacks consideration of the trend of the key attributes of the optical module, does not have the capability of predicting faults, can repair the faults only after the faults occur, and still cannot effectively avoid the faults.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for adjusting a value of a selected key attribute of an optical module, which are used for solving the problem that the existing optical module can only repair a fault after the fault occurs and can not effectively avoid the fault.
In a first aspect, the present invention provides a method for adjusting a value of a selected key attribute of an optical module, the method including:
acquiring a current value of a selected key attribute of an optical module;
predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
if the service life is determined to be smaller than a preset service life threshold value, determining an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute;
and sending the adjusting value to the optical module so that the optical module adjusts the current value according to the adjusting value.
Further, the predicting the lifetime of the optical module according to the current value and a pre-saved failure threshold of the optical module includes:
judging whether the current value is obtained for the first time;
if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient;
and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
Further, the determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time, and a pre-stored initial attenuation coefficient includes:
determining a first difference between the current value and the initial value;
determining a first ratio of the first difference value to the working time length of the optical module;
and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
Further, the predicting the life of the optical module according to the current value, a pre-saved failure threshold of the optical module, and the predicted attenuation coefficient includes:
determining a second difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
Further, the step of determining the lifetime of the optical module according to the current value, the fault threshold value and a pre-saved initial attenuation coefficient includes:
determining a third difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
Further, if the selected key attribute comprises at least one of emitted optical power, operating voltage and bias current, the determining an adjustment value of the selected key attribute according to the current value and a pre-saved standard value of the selected key attribute comprises:
if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module;
if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage;
and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
In a second aspect, the present invention also provides an apparatus for adjusting a value of a selected key attribute of a light module, the apparatus comprising:
the determining module is used for acquiring the current value of the selected key attribute of the optical module;
the prediction module is used for predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
the determining module is further configured to determine an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute if it is determined that the lifetime is less than a preset lifetime threshold;
and the processing module is used for sending the adjusting value to the optical module so as to enable the optical module to adjust the current value according to the adjusting value.
Further, the prediction module is specifically configured to determine whether the current value is obtained for the first time; if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient; and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
Further, the prediction module is specifically configured to determine a first difference between the current value and the initial value; determining a first ratio of the first difference value to the working time length of the optical module; and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
Further, the prediction module is specifically configured to determine a second difference between the current value and the fault threshold; and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
Further, the prediction module is specifically configured to determine a third difference between the current value and the fault threshold; and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
Further, the determining module is specifically configured to: if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module; if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage; and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
In a third aspect, the present invention further provides an electronic device comprising a processor configured to implement the steps of the method for adjusting a current value of a selected key attribute of a light module as described above when executing a computer program stored in a memory.
In a fourth aspect, the present invention further provides a computer-readable storage medium, which stores a computer program, which when executed by a processor implements the steps of the method for adjusting the current value of a selected key attribute of a light module as described above.
In the embodiment of the invention, the current value of the selected key attribute of the optical module is obtained, the service life of the optical module is predicted according to the current value and the pre-stored fault threshold value of the optical module, if the service life is determined to be smaller than the pre-stored service life threshold value, the adjustment value of the selected key attribute is determined according to the current value and the pre-stored standard value of the selected key attribute, and the adjustment value is sent to the optical module, so that the optical module adjusts the current value according to the adjustment value. In the embodiment of the invention, the service life of the optical module is predicted according to the received current value of the selected key attribute of the optical module, and the adjustment value of the current value of the selected key attribute is determined when the predicted service life of the optical module is smaller than the preset service life threshold value, so that the optical module adjusts the current value according to the adjustment value, thereby avoiding the occurrence of optical module faults in advance, effectively prolonging the service life of the optical module and being beneficial to improving the working efficiency of a communication system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a process of adjusting a value of a selected key attribute of an optical module according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of an optical module fault monitoring and self-recovery scheme according to an embodiment of the present invention;
fig. 4 is a diagram of a system structure for monitoring and self-recovering an optical module fault according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for adjusting a value of a selected key attribute of an optical module according to an embodiment of the present invention;
fig. 6 is an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to avoid an optical module from failing and improve the efficiency of a communication system, embodiments of the present invention provide a method, an apparatus, a device, and a medium for adjusting a current value of a selected key attribute of an optical module.
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention, and referring to fig. 1, the optical module includes: an electrical signal driver, a laser, an adjustable transmittance Liquid Crystal Module (LCM), and a receiver.
Compared with a common laser, the laser adopted in the embodiment of the invention meets the longest distance transmission quality requirement under the condition of default LCM transmittance (50%), and the current value of the selected key attribute of the optical module is located in the normal range of the key attribute in the DDM.
The adjustable transmittance Liquid Crystal Module (LCM) mainly comprises: the liquid crystal module comprises a liquid crystal and two polaroids, wherein the transmittance of the LCM ranges from 0% to 100%, and under the condition of default power supply, namely when the voltage loaded on the optical module is normal, the transmittance of the LCM is 50%, and the adjustable range is +/-50%. When the voltage is not applied to the optical module, the LCM is in a full-transmittance state, and when the voltage applied to the optical module changes, the transmittance of the LCM changes.
Specifically, the voltage applied to the optical module and the transmittance of the LCM are in a negative correlation nonlinear proportional relationship, and the transmittance expression is as follows: t isTransmittance of light＝80％-kgUgWherein k isgFor pre-saved tuning of the correlation coefficient, U, of the LCMgIs a voltage adjustment value.
When the optical module is driven normally, the network accessible switch can obtain a current value of a selected key attribute of the optical module, wherein the obtained current value of the selected key attribute of the optical module comprises voltage loaded on the optical module, namely working voltage of the optical module, bias current of the optical module and emitted optical power of the optical module.
Example 1:
fig. 2 is a schematic diagram of a process of adjusting a value of a selected key attribute of an optical module according to an embodiment of the present invention, where the process includes the following steps:
s201: a current value of a selected key attribute of the optical module is obtained.
The method for adjusting the value of the selected key attribute of the optical module provided by the embodiment of the invention is applied to electronic equipment, and the electronic equipment can be PC, server and the like which can determine the adjustment value of the current value of the selected key attribute of the optical module.
In an embodiment of the invention, the key property is selected to be any one of operating temperature, operating voltage, bias current, received optical power, emitted optical power. The method for adjusting the value of the selected key attribute of the optical module can be adopted for adjusting each key attribute.
S202: and predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module.
In order to determine whether the current value of the selected key attribute of the optical module needs to be adjusted, the lifetime of the optical module may be predicted first in the embodiment of the present invention. Specifically, when predicting the lifetime of an optical module, the lifetime of the optical module is predicted first for an acquired current value of a selected key attribute of the optical module and a prestored fault threshold of the optical module.
S203: and if the service life is determined to be smaller than a preset service life threshold value, determining an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute.
In the embodiment of the present invention, after it is determined that the lifetime of the optical module is less than the preset lifetime threshold, it is determined that the optical module may have a fault or the current value of the selected key attribute of the current optical module cannot meet the requirement due to factors such as environment, and the current value of the optical module needs to be adjusted.
In the embodiment of the present invention, according to the standard value of the selected key attribute stored in advance, the adjustment value for adjusting the current value of the selected key attribute of the optical module to the standard value can be determined.
In the practical application process, due to the problems of abnormal quality of transmitted laser, data loss and the like caused by factors such as attenuation of laser functions, change of transmission distance, light attenuation of transmission distance and the like, the current value of the selected key attribute of the optical module at that time cannot meet the requirement, and the service life of the optical module is influenced.
S204: and sending the adjusting value to the optical module so that the optical module adjusts the current value according to the adjusting value.
And after the adjustment value is determined, sending the adjustment value to the optical module so that the optical module adjusts the current value of the optical module according to the adjustment value. And in order to make the optical module know which current value of the selected key attribute is to be adjusted, when the adjustment value is sent, information of the corresponding current value of the selected key attribute is sent to the optical module, so that the optical module can correspondingly adjust the current value of the selected key attribute according to the received information of the current value of the selected key attribute and the adjustment value.
S204: and if the service life is not less than a preset service life threshold value, determining that the optical module does not need to adjust the current value of the selected key attribute.
If the predicted service life of the optical module is not less than the preset service life threshold, the service life of the optical module in the state does not reach the alarm state, the performance of the optical module is good, and the current value of the selected key attribute of the optical module does not need to be adjusted.
According to the embodiment of the invention, the service life of the optical module is predicted according to the received current value of the selected key attribute of the optical module, and the adjustment value of the current value of the selected key attribute is determined when the predicted service life of the optical module is smaller than the preset service life threshold value, so that the optical module adjusts the current value according to the adjustment value, the occurrence of optical module faults is avoided in advance, the service life of the optical module is effectively prolonged, and the working efficiency of a communication system is favorably improved.
Example 2:
in order to accurately determine the current value of the selected key attribute of the optical module, on the basis of the foregoing embodiment, in an embodiment of the present invention, the acquiring the current value of the selected key attribute of the optical module includes:
sending a command for acquiring the current value of the selected key attribute of the optical module to a network accessible switch;
receiving the current value sent by the network-reachable switch.
The existing optical module is generally connected to a network reachable switch, and the network reachable switch can be placed in a specific test environment which is manually set up, or can be tested in a user field environment or a fault environment. The test environment is not limited to a single device, can be a multi-device stacking combination, and can also be a whole network topology scene environment. The optical module is accessed into the network accessible switch, and after the optical module is normally driven, the network accessible switch can acquire the current value of the selected key attribute of the optical module.
Specifically, in the embodiment of the present invention, when the current value of the selected key attribute of the optical module needs to be obtained, the electronic device sends a command for obtaining the current value of the selected key attribute of the optical module to the network accessible switch, and after receiving the command, the network accessible switch obtains the current value of the selected key attribute of the optical module accessed therein and sends the current value to the electronic device. Specifically, when a command is sent to the network-accessible switch, information of the current value of the specific selected key attribute to be acquired may be sent, for example, the information may carry one or more of information of emitted optical power, operating voltage, or bias current, and when the network-accessible switch receives the command, the current value of the corresponding selected key attribute is acquired and sent to the electronic device, or of course, the information of the current value of the selected key attribute may not be carried, and then the network-accessible switch acquires information of the current values of all selected key attributes at this time and sends the acquired current values of all selected key attributes to the electronic device.
Example 3:
in order to accurately predict the lifetime of an optical module, in an embodiment of the present invention based on the above embodiments, the predicting the lifetime of the optical module according to the current value and a pre-stored failure threshold of the optical module includes:
judging whether the current value is obtained for the first time;
if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient;
and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
In order to accurately predict the service life of the optical module, in the embodiment of the present invention, before predicting the service life of the optical module, it is first determined whether the current value of the obtained selected key attribute is obtained for the first time, and if the current value is not obtained for the first time, the predicted attenuation coefficient of the optical module is predicted according to the current value, the initial value of the selected key attribute obtained for the first time, and the initial attenuation coefficient stored in advance.
Specifically, when the information of the selected key attribute of the optical module is stored in the electronic device, it is determined that the current value is not acquired for the first time, and when the information of the selected key attribute of the optical module is not stored in the electronic device, it is determined that the current value is acquired for the first time.
The selected key attribute may be any of emitted optical power, operating voltage, or bias current.
If the current value is not obtained for the first time, in order to accurately determine the predicted attenuation coefficient of the optical module, on the basis of the foregoing embodiments, in an embodiment of the present invention, the determining the predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time, and a pre-stored initial attenuation coefficient includes:
determining a first difference between the current value and the initial value;
determining a first ratio of the first difference value to the working time length of the optical module;
and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
If the current value is not acquired for the first time, in order to predict the service life of the optical module, a first difference value between the current value and the initial value of the selected key attribute is determined first, because the initial value of the selected key attribute of the optical module and the current value of the selected key attribute determined this time are known, the difference value is the first difference value between the current value determined this time and the initial value of the selected key attribute of the optical module, and because the using time of the optical module is known, the time when the current value of the optical module is acquired currently is known, the working time of the optical module can be determined.
Specifically, if the selected key attribute is the emitted optical power, the expression of the predicted attenuation coefficient is as follows:
Figure BDA0002778133110000111
if the selected key attribute is bias current, the expression of the predicted attenuation coefficient is as follows:
Figure BDA0002778133110000112
if the selected key attribute is the working voltage, the expression of the predicted attenuation coefficient is as follows:
Figure BDA0002778133110000113
wherein, Kp、KI、KURespectively, a predicted attenuation coefficient corresponding to the emitted optical power, a predicted attenuation coefficient corresponding to the bias current, and a predicted attenuation coefficient corresponding to the operating voltage, P, I, U respectively being a current value of the acquired emitted optical power, a current value of the bias current, and a current value of the operating voltage, P0、I0、U0Respectively the initial values of the selected key attributes of the light module,
Figure BDA0002778133110000114
the initial attenuation coefficient corresponding to the emitted light power, the initial attenuation coefficient corresponding to the bias current and the initial attenuation coefficient corresponding to the working voltage are respectively pre-stored, and t is the working time of the optical module.
If the current value is not obtained for the first time, after determining the predicted attenuation coefficient, in order to accurately predict the lifetime of the optical module, on the basis of the foregoing embodiments, in an embodiment of the present invention, the predicting the lifetime of the optical module according to the current value, a pre-stored failure threshold of the optical module, and the predicted attenuation coefficient includes:
determining a second difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
In order to predict the service life of the optical module, in the embodiment of the present invention, a fault threshold of the corresponding optical module is stored in advance for each selected key attribute, after a current value of the selected key attribute is obtained, a difference value between the current value and the fault threshold is determined, and the service life of the optical module is predicted according to a ratio of the difference value to a predicted attenuation coefficient.
If the selected key attribute is the emitted light power, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000115
if the selected key attribute is bias current, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000121
if the selected key attribute is the working voltage, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000122
wherein, tp、tI、tUThe optical mode corresponding to the service life of the optical module and the bias current respectivelyThe lifetime of the block and the lifetime of the optical module corresponding to the operating voltage P, I, U are the current value of the acquired emitted optical power, the current value of the bias current, the current value of the operating voltage, Perror、Ierror、UerrorRespectively pre-stored fault threshold value of the optical module, fault threshold value of the bias current and fault threshold value of the working voltage, Kp、KI、KUThe predicted attenuation coefficient corresponding to the emitted light power, the predicted attenuation coefficient corresponding to the bias current and the predicted attenuation coefficient corresponding to the working voltage are respectively.
If the current value is obtained for the first time, in order to accurately predict the lifetime of the optical module, on the basis of the foregoing embodiments, in an embodiment of the present invention, the predicting the lifetime of the optical module according to the current value, the fault threshold, and a pre-stored initial attenuation coefficient includes:
determining a third difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
If the selected key attribute is the emitted light power, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000123
if the selected key attribute is bias current, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000124
if the selected key attribute is the working voltage, predicting the service life of the optical module according to the following formula:
Figure BDA0002778133110000125
wherein, tp、tI、tURespectively, the lifetime of the optical module corresponding to the emitted optical power, the lifetime of the optical module corresponding to the bias current, and the lifetime of the optical module corresponding to the operating voltage, P, I, U respectively being the current values of the acquired emitted optical powerCurrent value of bias current, current value of operating voltage, Perror、Ierror、UerrorRespectively a pre-saved fault threshold for the transmission power, a fault threshold for the bias current and a fault threshold for the operating voltage,
Figure BDA0002778133110000126
the initial attenuation coefficient corresponding to the emitted light power, the initial attenuation coefficient corresponding to the bias current and the initial attenuation coefficient corresponding to the working voltage are respectively saved in advance.
Example 4:
in order to accurately determine the adjustment value of the selected key attribute, on the basis of the above embodiments, in an embodiment of the present invention, if the selected key attribute includes at least one of emitted optical power, operating voltage and bias current, the determining the adjustment value of the selected key attribute according to the current value and a pre-saved standard value of the selected key attribute includes:
if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module;
if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage;
and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
Because the emitted light power of the light module cannot be directly adjusted, if the selected key attribute is the emitted light power, an adjustment value required to be adjusted when the emitted light power is adjusted to the pre-stored standard value of the emitted power can be determined according to the emitted light power and the pre-stored standard value of the emitted power, and an adjustment value of the working voltage corresponding to the fourth difference value can be determined according to the relationship between the pre-stored emitted light power difference value and the working voltage adjustment value.
If the selected key attribute is the emitted light power, the expression of the corresponding adjustment value of the emitted light power is as follows: Δ P ═ Pwell-P
Wherein, PwellP is a current value of the acquired emission power, which is a standard value of the emission power stored in advance.
And when the adjustment value of the emission light power of the optical module is determined, determining the adjustment value of the working voltage corresponding to the fourth difference value according to the relationship between the emission light power difference value and the working voltage adjustment value which are stored in advance.
The expression of the pre-stored emitted light power difference value and the working voltage adjustment value is as follows:
Figure BDA0002778133110000141
wherein k isgAdjusting the correlation coefficient of the LCM stored in advance.
If the selected key attribute is the working voltage or the bias current, the expression of the corresponding adjustment value of the working voltage or the bias current is as follows: Δ I ═ Iwell-I and Δ U ═ Uwell-U。
Wherein, IwellAnd UwellThe current value of the bias current of the optical module and the current value of the working voltage are obtained by I and U.
Example 5:
in order to accurately adjust the current value of the selected key attribute of the optical module, on the basis of the foregoing embodiments, in an embodiment of the present invention, the sending the adjustment value to the optical module to enable the optical module to adjust the current value of the selected key attribute according to the adjustment value includes:
and sending notification information carrying the adjustment value to a network accessible switch, so that the optical module adjusts the current value of the selected key attribute according to the adjustment value.
After the adjustment value of the current value of the selected key attribute is determined, the notification information carrying the adjustment value is sent to a network accessible switch, and the network accessible switch controls the optical module to adjust the current value of the selected key attribute according to the acquired adjustment value.
If the current value of the selected key attribute is the emission light power, the corresponding received adjustment value is the adjustment value corresponding to the working voltage, and the voltage loaded on the LCM of the optical module is adjusted according to the adjustment value, so that the transmittance of the LCM in the optical module is changed, and the emission light power of the optical module is further changed.
If the selected key attribute is the bias current or the working voltage, after the notification information carrying the adjustment value of the working voltage or the adjustment value of the bias current is sent to the network accessible switch device, the network accessible switch device directly controls the optical module to change the working voltage or the bias current of the optical module.
Fig. 3 is a schematic flowchart of an optical module fault monitoring and self-recovery scheme according to an embodiment of the present invention; fig. 4 is a diagram of a system structure for monitoring and self-recovering an optical module failure according to an embodiment of the present invention. Reference is now made to fig. 3 and 4.
The optical module is accessed to a network reachable switch, wherein the network reachable switch is placed in an optical module application scene, the network reachable switch acquires selected key attribute information of the optical module in real time, and the electronic device sends a command for acquiring a current value of the selected key attribute and fault information of the optical module to the network reachable switch through a data connector, wherein the selected key attribute of the optical module specifically comprises: operating temperature, operating voltage, bias current, received optical power, emitted optical power, etc.
The electronic device stores the selected key attribute information and the fault information of the acquired optical module in a monitoring module of the electronic device, the monitoring module can monitor acquired data in real time, specifically, the acquired key attribute information of the optical module is stored in a DDM (distributed data management) database, and a pre-stored initial attenuation coefficient and a pre-stored fault threshold value of the optical module are stored in a module information base.
A prediction module in an AI recovery module of the electronic equipment obtains an initial attenuation coefficient pre-stored in a module information base in a monitoring module and a fault threshold value of a pre-stored optical module, so that the service life of the optical module is predicted according to the obtained current value of the selected key attribute and the pre-stored fault threshold value of the optical module.
If the lifetime of the optical module is less than the lifetime threshold, the optical module self-adjustment recovery mechanism needs to perform a self-adjustment function for the selected key attribute of the optical module, specifically, the adjustment value determination module in the electronic device determines an adjustment value of the selected key attribute that needs to be adjusted, and sends notification information carrying the adjustment value to the network accessible switch through the data connector, so that the optical module adjusts the current value according to the adjustment value. In addition, the abnormal data module in the AI recovery module is configured to update the pre-stored failure threshold value of the optical module by recording a current value of the selected key attribute of the corresponding optical module when the lifetime of the optical module is less than the lifetime threshold value, and determining the latest failure threshold value of the optical module. The user can also check the quality condition of each module in the electronic equipment in the remote environment through a local PC (personal computer) through a WEB/client terminal, and can also manually adjust each module in the electronic equipment through a WEB terminal.
Example 6:
fig. 5 is a schematic structural diagram of an apparatus for adjusting a current value of a selected key attribute of an optical module according to an embodiment of the present invention, where the apparatus includes:
a determining module 501, configured to obtain a current value of a selected key attribute of an optical module;
a predicting module 502, configured to predict a lifetime of the optical module according to the current value and a pre-stored failure threshold of the optical module;
the determining module 501 is further configured to determine an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute if it is determined that the lifetime is smaller than a preset lifetime threshold;
the processing module 503 is configured to send the adjustment value to the optical module, so that the optical module adjusts the current value according to the adjustment value.
In a possible implementation manner, the prediction module 502 is specifically configured to determine whether the current value is obtained for the first time; if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient; and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
In a possible implementation, the prediction module 502 is specifically configured to determine a first difference between the current value and the initial value; determining a first ratio of the first difference value to the working time length of the optical module; and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
In a possible implementation, the prediction module 502 is specifically configured to determine a second difference between the current value and the fault threshold; and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
In a possible implementation, the prediction module 502 is specifically configured to determine a third difference between the current value and the fault threshold; and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
In a possible implementation manner, the determining module 501 is specifically configured to: if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module; if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage; and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
Example 7:
on the basis of the foregoing embodiments, some embodiments of the present invention further provide an electronic device, as shown in fig. 6, including: the system comprises a processor 601, a communication interface 602, a memory 603 and a communication bus 604, wherein the processor 601, the communication interface 602 and the memory 603 are communicated with each other through the communication bus 604.
The memory 603 has stored therein a computer program which, when executed by the processor 601, causes the processor 601 to perform the steps of:
acquiring a current value of a selected key attribute of an optical module;
predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
if the service life is determined to be smaller than a preset service life threshold value, determining an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute;
and sending the adjusting value to the optical module so that the optical module adjusts the current value according to the adjusting value.
Further, the processor 601 is further configured to determine whether the current value is obtained for the first time; if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient; and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
Further, the processor 601 is further configured to determine a first difference between the current value and the initial value; determining a first ratio of the first difference value to the working time length of the optical module; and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
Further, the processor 601 is further configured to determine a second difference between the current value and the fault threshold; and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
Further, the processor 601 is further configured to determine a third difference between the current value and the fault threshold; and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
Further, the processor 601 is further configured to determine, if the selected key attribute is the emitted light power, a fourth difference between the current value and a standard value of the pre-stored emitted light power, and determine, according to a correspondence between the pre-stored difference between the emitted light power and an adjustment value of the working voltage, a fourth difference of voltages across a liquid crystal display module LCM loaded on the optical module, so that the emitted light power of the optical module adjusts the corresponding adjustment value after the voltages across the optical module are adjusted by the fourth difference; if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage; and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
The communication bus mentioned in the above server may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface 602 is used for communication between the above-described electronic apparatus and other apparatuses.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a central processing unit, a Network Processor (NP), and the like; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.
Example 8:
on the basis of the foregoing embodiments, an embodiment of the present invention further provides a computer-readable storage medium, in which a computer program executable by an electronic device is stored, and when the program is run on the electronic device, the electronic device is caused to execute the following steps:
the memory having stored therein a computer program that, when executed by the processor, causes the processor to perform the steps of:
acquiring a current value of a selected key attribute of an optical module;
predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
if the service life is determined to be smaller than a preset service life threshold value, determining an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute;
and sending the adjusting value to the optical module so that the optical module adjusts the current value according to the adjusting value.
Further, the predicting the lifetime of the optical module according to the current value and a pre-saved failure threshold of the optical module includes:
judging whether the current value is obtained for the first time;
if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient;
and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
Further, the determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time, and a pre-stored initial attenuation coefficient includes:
determining a first difference between the current value and the initial value;
determining a first ratio of the first difference value to the working time length of the optical module;
and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
Further, the predicting the life of the optical module according to the current value, a pre-saved failure threshold of the optical module, and the predicted attenuation coefficient includes:
determining a second difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
Further, the step of determining the lifetime of the optical module according to the current value, the fault threshold value and a pre-saved initial attenuation coefficient includes:
determining a third difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
Further, if the selected key attribute comprises at least one of emitted optical power, operating voltage and bias current, the determining an adjustment value of the selected key attribute according to the current value and a pre-saved standard value of the selected key attribute comprises:
if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module;
if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage;
and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
According to the embodiment of the invention, the service life of the optical module is predicted according to the received current value of the selected key attribute of the optical module, and the adjustment value of the current value of the selected key attribute is determined when the predicted service life of the optical module is smaller than the preset service life threshold value, so that the optical module adjusts the current value according to the adjustment value, the occurrence of optical module faults is avoided in advance, the service life of the optical module is effectively prolonged, and the working efficiency of a communication system is favorably improved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (14)

1. A method for adjusting a value of a selected key attribute of a light module, the method comprising:
acquiring a current value of a selected key attribute of an optical module;
predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
if the service life is determined to be smaller than a preset service life threshold value, determining an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute;
and sending the adjusting value to the optical module so that the optical module adjusts the current value according to the adjusting value.
2. The method of claim 1, wherein predicting the lifetime of the optical module according to the current value and a pre-saved failure threshold of the optical module comprises:
judging whether the current value is obtained for the first time;
if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient;
and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
3. The method according to claim 2, wherein determining the predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute acquired for the first time, and a pre-stored initial attenuation coefficient comprises:
determining a first difference between the current value and the initial value;
determining a first ratio of the first difference value to the working time length of the optical module;
and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
4. The method of claim 2, wherein predicting the lifetime of the light module based on the current value, the fault threshold value, and the predictive attenuation coefficient comprises:
determining a second difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
5. The method of claim 2, wherein said determining a lifetime of said light module based on said current value, said fault threshold value, and said initial attenuation factor comprises:
determining a third difference between the current value and the fault threshold;
and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
6. The method according to any one of claims 1-5, wherein if the selected key attribute comprises at least one of emitted optical power, operating voltage and bias current, said determining an adjustment value for the selected key attribute based on the current value and a pre-saved standard value for the selected key attribute comprises:
if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module;
if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage;
and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
7. An apparatus for adjusting a value of a selected key attribute of a light module, the apparatus comprising:
the determining module is used for acquiring the current value of the selected key attribute of the optical module;
the prediction module is used for predicting the service life of the optical module according to the current value and a prestored fault threshold value of the optical module;
the determining module is further configured to determine an adjustment value of the selected key attribute according to the current value and a pre-stored standard value of the selected key attribute if it is determined that the lifetime is less than a preset lifetime threshold;
and the processing module is used for sending the adjusting value to the optical module so as to enable the optical module to adjust the current value according to the adjusting value.
8. The apparatus according to claim 7, wherein the prediction module is specifically configured to determine whether the current value is obtained for the first time; if the current value is not obtained for the first time, determining a predicted attenuation coefficient of the optical module according to the current value, the initial value of the selected key attribute obtained for the first time and a pre-stored initial attenuation coefficient; predicting the life of the optical module according to the current value, the fault threshold value and the predicted attenuation coefficient; and if the current value is acquired for the first time, predicting the service life of the optical module according to the current value, the fault threshold and the initial attenuation coefficient.
9. The apparatus according to claim 8, wherein the prediction module is configured to determine a first difference between the current value and the initial value; determining a first ratio of the first difference value to the working time length of the optical module; and predicting the predicted attenuation coefficient of the optical module according to the first ratio and the initial attenuation coefficient.
10. The apparatus according to claim 8, wherein the prediction module is specifically configured to determine a second difference between the current value and the fault threshold; and predicting the service life of the optical module according to a second ratio of the second difference value to the predicted attenuation coefficient.
11. The apparatus according to claim 8, wherein the prediction module is specifically configured to determine a third difference between the current value and the fault threshold; and predicting the service life of the optical module according to a third ratio of the third difference value to the initial attenuation coefficient.
12. The apparatus according to any one of claims 7 to 11, wherein the determining module is specifically configured to: if the selected key attribute is the emission light power, determining a fourth difference value between the current value and a pre-stored standard value of the emission light power, and determining a fourth difference value of voltages at two ends of a liquid crystal display module (LCM) loaded on the optical module according to a corresponding relation between the pre-stored difference value of the emission light power and an adjustment value of a working voltage, so that the emission light power of the optical module is adjusted by adjusting the fourth difference value after the voltages at two ends of the optical module are loaded with the emission light power of the optical module; if the selected key attribute is working voltage, determining a fifth difference value between the current value and a pre-stored standard value of the working voltage as an adjustment value of the working voltage; and if the selected key attribute is the bias current, determining a sixth difference value between the current value and a pre-stored standard value of the bias current as an adjustment value of the bias current.
13. An electronic device, characterized in that the electronic device comprises a processor for implementing the steps of the method according to any of claims 1-6 when executing a computer program stored in a memory.
14. A computer-readable storage medium, characterized in that it stores a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
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