CN113904719B - Health monitoring and fault diagnosis method for optical transmission equipment - Google Patents
Health monitoring and fault diagnosis method for optical transmission equipment Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims abstract description 118
- 238000012544 monitoring process Methods 0.000 title claims abstract description 85
- 230000005540 biological transmission Effects 0.000 title claims abstract description 75
- 230000036541 health Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003745 diagnosis Methods 0.000 title claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 21
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- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000002159 abnormal effect Effects 0.000 claims description 13
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- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 7
- 238000007726 management method Methods 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 5
- 238000012795 verification Methods 0.000 claims description 4
- 238000012217 deletion Methods 0.000 claims description 3
- 230000037430 deletion Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
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- 239000000835 fiber Substances 0.000 description 3
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- 230000003862 health status Effects 0.000 description 2
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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
- H04B10/0791—Fault location on the transmission path
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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
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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
- H04B10/0799—Monitoring line transmitter or line receiver equipment
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Abstract
The invention provides a health monitoring and fault diagnosis method of optical transmission equipment, which comprises the following steps: step 1, establishing a health monitoring point, and acquiring the state of each replaceable module in optical transmission equipment to form a state information base; step 2, establishing a fault analysis model of the optical transmission equipment based on the established health monitoring points, positioning faults of each module, and analyzing reasons causing the faults; and 3, carrying out equipment full life cycle management, tracking the replacement, maintenance and repair records of each module of the optical transmission equipment, and providing a maintenance decision suggestion. The method is quick and effective, and is convenient for operators to know the health state of the equipment in real time and locate the fault information in time, thereby providing an efficient and convenient fault location means for the operation of a data receiving system and ensuring the reliable operation of the system.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a health monitoring and fault diagnosis method for optical transmission equipment.
Background
The optical transmission equipment is used for long-distance signal transmission of a ground data receiving station and can transmit single-path/multi-path radio frequency signals. An optical transmission device generally includes a light emitting assembly, a light receiving assembly, and a transmission optical fiber. The light emitting component converts the radio frequency signal into an optical signal, and the light receiving component converts the optical signal sent by the light emitting component into a corresponding radio frequency signal. And the transmission fiber serves as a transmission medium. Compared with radio frequency cable transmission, the introduction of the optical transmission equipment can realize the long-distance and low-loss transmission of radio frequency signals, and the optical transmission equipment is widely applied to systems such as satellite ground stations, space launching fields and the like. Therefore, the optical transmission device is an indispensable ring of the data reception system, and when it fails, it may directly cause a task failure.
In recent years, the size of a ground data receiving station is increasingly large, and the complexity of a system is increasingly improved. The requirements for equipment repair and maintenance are also gradually increasing. The optical transmission equipment is used as special equipment of a channel system, and has high specialty and large using amount. In the face of a large number of equipment groups, fault information cannot be timely acquired and positioned in actual operation, and timeliness of maintenance is reduced. In addition, the optical transmission equipment lacks an independent monitoring means, and causes certain difficulty in positioning faults.
Based on the above requirements, it is urgently needed to establish a method for detecting the health status and diagnosing and positioning faults for optical transmission equipment, so that operating personnel can know the health status of the equipment in real time, fault information can be positioned in time, and great convenience is provided for maintenance and repair.
Disclosure of Invention
In view of the above-mentioned shortcomings of the background art, the present invention provides a method for health monitoring and fault diagnosis of an optical transmission device, so that the optical transmission device has the capability of detecting faults, locating the reasons of the faults, etc. in real time, and the problems proposed by the background art are effectively solved.
The technical scheme of the invention is as follows: a health monitoring and fault diagnosis method for optical transmission equipment comprises the following steps:
step 1, establishing a health monitoring point, collecting the state of each replaceable module in optical transmission equipment, and forming a state information base, wherein the optical transmission equipment comprises a light emitting component, a light receiving component and a transmission optical fiber;
step 2, establishing a fault analysis model of the optical transmission equipment based on the established health monitoring points, positioning faults of each module, and analyzing reasons causing the faults;
and 3, carrying out equipment full life cycle management, tracking the replacement, maintenance and repair records of each module of the optical transmission equipment, and providing a maintenance decision suggestion.
Further, in step 1, establishing a health monitoring point, including establishing a health monitoring point on the light emitting module and the light receiving module, specifically:
a. the health monitoring point of the light emitting component comprises a power module, a radio frequency module and a light emitting module;
b. the health monitoring point of the light receiving assembly comprises a power module, a radio frequency module and a receiving light module.
Furthermore, the monitoring information of the power module in the light emitting component comprises a comprehensive state, a power supply current and a power supply voltage;
monitoring information of a radio frequency module in the light emitting assembly comprises the working state of an amplifier and numerical control attenuation;
monitoring information of a transmitting optical module in the light transmitting assembly comprises output optical power, working environment temperature of a laser, refrigerating and heating current and working current of the laser;
monitoring information of a power supply module in the light receiving assembly comprises a comprehensive state, a power supply current and a power supply voltage;
monitoring information of a radio frequency module in the light receiving assembly comprises the working state of an amplifier and numerical control attenuation;
monitoring information of a receiving optical module in the optical receiving assembly comprises detected optical power;
further, the power supply current of the light emitting module and the light receiving module includes: working current and refrigerating and heating current are detected by a Hall sensor;
the working environment temperature of the laser is detected by a thermistor, the resistance value of the thermistor is in a linear relation with the temperature, and the resistance value information is converted into corresponding voltage information to obtain the current temperature information;
the output light power is obtained by detecting the light power of the backlight of the laser, the backlight information is converted into voltage information, the voltage information is in direct proportion to the input light power of the backlight, and the output light power of the laser is obtained by detecting the voltage information.
Further, in the step 1, collecting the state of each replaceable module inside the optical transmission device includes performing radio frequency detection, where the radio frequency detection obtains the input radio frequency signal power of the optical transmission module and the output radio frequency signal power of the optical reception module; specifically, the method comprises the following steps: the radio frequency detection method couples a part of input radio frequency signals out for detection and then obtains the power of the input radio frequency signals through conversion; the input radio frequency signal passes through the directional coupler, a part of coupled signals are sent to the detector at the output end of the coupler, and a direct current voltage which is in a linear relation with the input radio frequency signal is output after passing through the detector.
Further, the method for establishing the fault analysis model in the step 2 comprises a fault tree, a fault expert database and a fault case database.
Further, the established fault tree includes a fault tree of the light emitting module and a fault tree of the light receiving module, the fault tree includes hardware faults and software faults of the device, the hardware faults include power module faults, radio frequency module faults, light module faults and monitoring module faults, and the software faults include software crash caused by various abnormalities.
Furthermore, the fault expert database is a fault analysis model established by combining means of expert reasoning and automatic testing based on the established health monitoring points, fault knowledge of the optical transmission equipment is established and audited to form the fault expert database based on artificial experience accumulation, and the expert knowledge base aiming at the optical transmission equipment is formed by establishing the expert knowledge.
Further, the establishing of the fault case library is based on the accumulation of historical fault problems, the establishing of the case library of the optical transmission equipment is based on the accumulation of the historical fault problems, the fault case library is formed through recording of the phenomenon and the positioning reason of the historical faults, the establishing of the troubleshooting means for the same or similar fault problems is based on the fault case library, and the fault case library comprises the steps of classification, retrieval, deletion, updating and leading-in of the historical faults.
Furthermore, the laser working current, the output light power, the refrigeration and heating current and the laser working environment temperature form a mutual correlation comprehensive information, and the transmitting optical module performs mutual verification and judgment through the four monitoring information; the verification and judgment logic is as follows:
firstly, judging whether the working environment temperature of the laser is consistent with the information of the refrigerating and heating current, when the working environment temperature of the laser is higher than the set temperature, the heating and cooling current can flow in the positive direction for refrigerating, and the higher the working environment temperature is, the larger the current is; on the contrary, when the working environment temperature of the laser is lower than the set temperature, the hot and cold heating current reversely flows to heat, and the lower the working environment temperature is, the larger the current is;
when the refrigeration and heating current of the laser is consistent with the working temperature information of the laser, judging the working current of the laser and the output light power information of the laser; under normal conditions, the working current of the laser and the output light power of the laser are kept at stable levels, and whether the light emitting module is abnormal or not is judged by judging the working current of the laser and the output light power of the laser.
Has the advantages that:
the invention establishes a health monitoring and fault diagnosis method for the optical transmission equipment based on the actual engineering requirements, and is beneficial to positioning and analyzing the equipment fault of the optical transmission equipment. By using the health monitoring and fault diagnosis method of the optical transmission equipment, engineering technicians can know the equipment state in time and locate fault information in time, great convenience is provided for maintenance, and the equipment maintenance timeliness is improved.
Drawings
Fig. 1 is a flowchart of a method for health monitoring and fault diagnosis of an optical transmission device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the components and RF detection positions of an optical transmission apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of RF detection according to an embodiment of the present invention;
FIG. 4 is a fault tree model of an optical transmit module according to an embodiment of the present invention;
fig. 5 is a fault tree model of the optical receiving module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention without creative efforts.
According to one embodiment of the invention, the optical transmission device comprises an optical transmitting component, an optical receiving component and a transmission optical fiber. The optical transmission device is used for realizing long-distance microwave radio frequency signal transmission, an input radio frequency signal is converted into an optical signal by the optical transmission assembly, the optical signal is transmitted to the optical receiving assembly through the transmission optical fiber, and the optical receiving assembly restores the optical signal into an output radio frequency signal.
As shown in fig. 1, the method for health monitoring and fault diagnosis of an optical transmission device of the present invention includes the following steps:
1. and establishing a health monitoring point, and acquiring the state of each replaceable module in the optical transmission equipment to form a state information base. In the embodiment of the invention, the replaceable module in the light emitting component comprises a dual-power module, a light emitting module, a radio frequency module and a monitoring module; the replaceable module in the light receiving component comprises a dual-power module, a receiving light module, a radio frequency module and a monitoring module; the transmission fiber is a replaceable module.
2. And (3) establishing a fault analysis model, establishing the fault analysis model of the optical transmission equipment in the embodiment based on the health monitoring points established in the step (1), positioning faults of all modules, and analyzing reasons for the faults. The fault analysis model selected by the embodiment of the invention is a fault tree.
3. And carrying out equipment full life cycle management, tracking the replacement, maintenance and repair records of each module of the optical transmission equipment, and providing a maintenance decision suggestion.
Optionally, the monitoring information and the corresponding status description of the light emitting module are shown in table 1:
table 1 monitoring information of light emitting module and corresponding state description table
The health monitoring point of the light receiving assembly comprises a power module, a radio frequency module and a receiving light module.
The information monitored by the monitoring point of the power supply module comprises but is not limited to the comprehensive state, the power supply voltage value and the power supply current value of the power supply;
the information monitored by the monitoring point of the radio frequency module comprises but is not limited to the working state of the amplifier and a numerical control attenuation value;
the information monitored by the monitoring point of the receiving optical module includes, but is not limited to, receiving optical power.
Specifically, the method of obtaining the received optical power is to convert the voltage/current value of the device into the received optical power by detecting the current/voltage value by making the voltage/current value of the device have a linear relationship with the received optical power.
Optionally, the monitoring points and the corresponding state descriptions of the light receiving components are shown in table 2:
table 2 detection information of light receiving element and corresponding state description table
The method for establishing the fault analysis model comprises a fault tree, a fault expert database, a fault case list database and the like.
The fault tree building method comprises the steps of building a fault tree, wherein the fault tree building comprises a light emitting component fault tree and a light receiving component fault tree. The fault tree should contain hardware faults and software faults of the equipment, and the hardware faults include power module faults, radio frequency module faults, optical module faults and monitoring module faults. Software failures include software crashes due to various exceptions.
The fault expert database is established based on the established health monitoring points and is a fault analysis model established by combining the means of combining expert reasoning and automatic testing. The method is based on artificial experience accumulation, establishes fault knowledge of the optical transmission equipment, and audits to form a fault expert database. Through the establishment of expert knowledge, an expert knowledge base for the optical transmission device is formed.
The failure expert database includes knowledge of failure experts of the light emitting component and knowledge of failure experts of the light receiving component.
The expert knowledge of faults of the light emitting assembly comprises expert knowledge of faults of the power supply module.
Specifically, the expert knowledge of the power module fault lies in that if the double power supplies are thoroughly damaged and direct current output does not exist, the monitoring information of the comprehensive state of the power supply is abnormal, specifically, the indication lamp of the front panel of the equipment is not on, the screen is not on, and the remote monitoring does not respond; if the output voltage of one power supply module becomes low or no voltage output is completely damaged, the power supply current or power supply voltage monitoring information is abnormal, which is specifically represented by that equipment uploads an abnormal state through an upper computer, displays the abnormal state through a display screen, and a front panel power supply state indicator lamp is turned off; under the condition that the double power supplies are normal, all monitoring information of the power supply module is normal, and the monitoring information is specifically represented as a green state displayed by a power supply state indicator lamp; the two power supplies are normal.
The expert knowledge of faults of the light emitting assembly comprises expert knowledge of faults of the radio frequency module.
Specifically, the expert knowledge of the radio frequency module fault includes that when the preamplifier is in fault, the working state monitoring information of the amplifier is abnormal and the power supply current is abnormal, and the amplifier cannot normally amplify the signal, which is represented by that the output signal is low or the signal disappears. Under normal conditions, the gain of the front-stage low-noise amplifier is a constant value, the power supply current is a stable value, and the current state of the amplifier is considered to be abnormal when the deviation of the working current exceeds a certain threshold value.
Specifically, the expert knowledge of the radio frequency module includes that when the numerical control attenuator is in fault, the numerical control attenuator value monitoring information is abnormal. By measuring the numerical control attenuation value step by step, the fault can be positioned.
The fault expert knowledge of the light emitting assembly comprises fault expert knowledge of the light emitting module.
Specifically, transmitting the expert knowledge of the fault of the optical module includes if the output optical power value is abnormal. When the optical power value is smaller than a certain value, the optical path difference loss becomes large, and the optical emitting module is abnormal.
The fault expert knowledge of the light emitting assembly comprises fault expert knowledge of a monitoring module.
Specifically, when the monitoring module fails, one or more of the phenomena of incorrect display of the front panel indicator light, no response of the key, no response of remote monitoring or data error may be caused according to different types of the failure.
The expert knowledge of the fault of the light receiving assembly comprises the expert knowledge of the fault of the power supply module.
Specifically, the power module failure expert knowledge is the same as the light emitting assembly power module failure expert knowledge.
The optical receiving assembly fault expert knowledge comprises radio frequency module fault expert knowledge.
The expert knowledge of the radio frequency module fault is the same as the expert knowledge of the radio frequency module fault of the light emitting component.
The optical receiving assembly fault expert knowledge comprises receiving optical module fault expert knowledge.
Specifically, the optical receiving module malfunction means that the received optical power value becomes small. When the optical power value is smaller than a certain value, the optical path difference loss becomes large, and the receiving optical module is abnormal. When the optical power value is zero, a disconnection of the connection fiber is considered possible.
The fault expert knowledge of the light emitting assembly comprises fault expert knowledge of a monitoring module.
The expert knowledge of the radio frequency module fault is the same as the expert knowledge of the radio frequency module fault of the light emitting component.
The method for establishing the fault case base is to establish the case base of the optical transmission equipment based on the accumulation of historical fault problems. Through recording the phenomenon of historical faults and the positioning reasons, a fault case library is formed, and a troubleshooting means for the same or similar fault problems is established. The fault case library includes, but is not limited to, classification, retrieval, deletion, update, import, etc. of historical faults.
The method for establishing the full life cycle management of the equipment is characterized in that the full life cycle management from racking, maintenance and maintenance to racking of each replaceable module of the optical transmission equipment is established, and storage and inquiry of maintenance decision suggestions are provided.
Specifically, the replaceable module of the light emitting assembly includes, but is not limited to, a light emitting module, a radio frequency module, a power supply module, a monitoring module, and the like. The replaceable module of the light receiving assembly comprises a receiving light module, a radio frequency module and a power supply module. A monitoring module, etc.
As shown in fig. 2, the rf detection can preliminarily locate the fault of the optical transmission device by detecting the power of the input rf signal of the optical transmitter module. The theoretical output radio frequency signal power can be obtained by combining the input radio frequency signal power of the optical transmission equipment with the gain and insertion loss conditions of the optical transmission equipment. And judging the threshold value of the actually output radio frequency power signal rate, and judging that the optical transmission equipment has a fault if the actually output radio frequency power signal rate is not met.
The rf detection shown in fig. 3 consists of a directional coupler, a detector and an analog-to-digital converter (ADC). The input radio frequency signal passes through the directional coupler, a small signal is output at the output end of the coupler, the signal enters the detector, and a direct current voltage which is in direct proportion to the signal power is output after passing through the detector. The direct current voltage passes through the ADC and then the signal power is judged.
The monitoring information established by the light emitting component in the embodiment of the invention is shown in table 3:
table 3 monitoring information list of light emitting module in embodiment
The monitoring information established by the optical receiving component in the implementation of the present invention is shown in table 4:
table 4 list of monitoring information of light receiving module in embodiment
FIG. 4 is a fault tree for a light emitting module in an embodiment of the present invention, the corresponding fault events of which are given in Table 5.
TABLE 5 light emitting Assembly Fault event List
Fig. 5 is a fault tree of the light receiving module in the embodiment of the present invention, and the corresponding fault event is given by table 6.
Table 6 fault case list of light receiving module
Table 7 shows a quantization range and a failure range for a portion of the quantifiable monitor points and corresponding monitor information in an embodiment of the present invention, based on the fault tree of the optical transmit module constructed in fig. 4. Possible causes are also given for fault conditions.
TABLE 7 quantized monitoring information (part) of light emitting module and fault cause table
Table 8 shows a quantization range and a failure range for a part of the quantifiable monitoring points and corresponding monitoring information in the embodiment of the present invention, according to the fault tree of the optical receiving module established in fig. 5. Possible causes are also given for fault conditions.
TABLE 8 quantized monitoring information (part) of light receiving module and fault reason table
According to the fault tree of the optical transmitting component and the fault tree of the optical receiving component described in fig. 4 and fig. 5, forward derivation is performed from a Y node of the fault tree to an X node and then to a T node, and the fault state of the Y node is judged according to a monitoring point corresponding to the Y node and corresponding monitoring information; and forward deriving to the corresponding X node according to the tree branches to which different Y nodes belong, and upwards deriving to the T node according to the fault tree branches, and finally judging the fault state of the equipment or the component.
In the embodiment of the invention, for establishing the life cycle management of the optical transmission equipment, the maintenance and repair record of each replaceable module is recorded and a maintenance and repair decision suggestion is provided from each time node of the work of leaving factory, debugging, shelving, maintenance and the like. And modular maintenance is carried out on the modules needing to be maintained, and the modules needing to be replaced need to be correspondingly replaced.
According to the health monitoring and fault diagnosis method of the optical transmission equipment, provided by the invention, the fault information of the equipment can be effectively acquired according to express delivery, the replaceable module of the equipment is positioned, the rapid maintenance and replacement of the optical transmission equipment are realized, and an efficient and safe guarantee means is provided for the operation of a data receiving system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A health monitoring and fault diagnosis method for optical transmission equipment is characterized by comprising the following steps:
step 1, establishing a health monitoring point, collecting the state of each replaceable module in optical transmission equipment, and forming a state information base, wherein the optical transmission equipment comprises a light emitting component, a light receiving component and a transmission optical fiber;
step 2, establishing a fault analysis model of the optical transmission equipment based on the established health monitoring points, positioning faults of each module, and analyzing reasons causing the faults;
step 3, carrying out equipment life cycle management, tracking the replacement, maintenance and repair records of each module of the optical transmission equipment, and providing a maintenance decision suggestion;
in the step 1, establishing health monitoring points, including establishing health monitoring points on the light emitting component and the light receiving component, specifically:
a. the health monitoring point of the light emitting component comprises a power module, a radio frequency module and a light emitting module;
b. the health monitoring point of the light receiving assembly comprises a power module, a radio frequency module and a receiving light module;
monitoring information of a power module in the light emitting assembly comprises a comprehensive state, a power supply current and a power supply voltage;
monitoring information of a radio frequency module in the light emitting assembly comprises the working state of an amplifier and numerical control attenuation;
monitoring information of a transmitting optical module in the light transmitting assembly comprises output optical power, working environment temperature of a laser, refrigerating and heating current and working current of the laser;
monitoring information of a power supply module in the light receiving assembly comprises a comprehensive state, a power supply current and a power supply voltage;
monitoring information of a radio frequency module in the light receiving assembly comprises the working state of an amplifier and numerical control attenuation;
monitoring information of a receiving optical module in the optical receiving assembly comprises detected optical power;
the laser working current, the output light power, the refrigeration and heating current and the working environment temperature of the laser form mutually-related comprehensive information, and the emission optical module performs mutual verification and judgment through the laser working current, the output light power, the refrigeration and heating current and the working environment temperature of the laser; the verification and judgment logic is as follows:
firstly, judging whether the working environment temperature of the laser is consistent with the information of the refrigeration and heating current, when the working environment temperature of the laser is higher than the set temperature, the refrigeration and heating current can flow in the forward direction for refrigeration, and the higher the working environment temperature is, the larger the refrigeration and heating current is; on the contrary, when the working environment temperature of the laser is lower than the set temperature, the refrigerating and heating current reversely flows to heat, and the lower the working environment temperature is, the larger the refrigerating and heating current is;
when the refrigeration and heating current of the laser is consistent with the working temperature information of the laser, judging the working current of the laser and the output light power information of the laser; under normal conditions, the working current of the laser and the output light power of the laser are kept at stable levels, and whether the light emitting module is abnormal or not is judged by judging the working current of the laser and the output light power of the laser.
2. The method of claim 1, wherein the method comprises:
the power supply current of the light emitting module and the light receiving module includes: working current and refrigerating and heating current are detected by a Hall sensor;
the working environment temperature of the laser is detected by a thermistor, the resistance value of the thermistor is in a linear relation with the temperature, and the resistance value information is converted into corresponding voltage information to obtain the current temperature information;
the output light power is obtained by detecting the light power of the backlight of the laser, the backlight information is converted into voltage information, the voltage information is in direct proportion to the input light power of the backlight, and the output light power of the laser is obtained by detecting the voltage information.
3. The method of claim 1, wherein the method of health monitoring and fault diagnosis of the optical transmission device comprises,
in the step 1, collecting the state of each replaceable module in the optical transmission device includes performing radio frequency detection, where the radio frequency detection obtains the input radio frequency signal power of the optical transmission module and the output radio frequency signal power of the optical receiving module; specifically, the method comprises the following steps: the radio frequency detection method couples a part of input radio frequency signals out for detection and then obtains the power of the input radio frequency signals through conversion; the input radio frequency signal passes through the directional coupler, a part of coupled signals are sent to the detector at the output end of the coupler, and a direct current voltage which is in a linear relation with the input radio frequency signal is output after passing through the detector.
4. The method of claim 1, wherein the method of health monitoring and fault diagnosis of the optical transmission device comprises,
the method for establishing the fault analysis model in the step 2 comprises the following steps: a fault tree, a fault expert library, or a fault case library.
5. The health monitoring and fault diagnosis method for optical transmission equipment according to claim 4,
the established fault tree comprises a fault tree of the light emitting assembly and a fault tree of the light receiving assembly, the fault tree comprises hardware faults and software faults of the equipment, the hardware faults comprise power module faults, radio frequency module faults, optical module faults and monitoring module faults, and the software faults comprise software breakdown caused by various abnormalities.
6. The health monitoring and fault diagnosis method for optical transmission equipment according to claim 4,
the fault expert database is a fault analysis model which is established based on the established health monitoring points and combined with the means of combining expert reasoning and automatic testing, the fault expert database establishes fault knowledge of the optical transmission equipment based on artificial experience accumulation, and audits to form the fault expert database, and the expert knowledge base aiming at the optical transmission equipment is formed through the establishment of the expert knowledge.
7. The health monitoring and fault diagnosis method for optical transmission equipment according to claim 4,
the establishing of the fault case base is based on the accumulation of historical fault problems, the case base of the optical transmission equipment is established, the fault case base is formed through recording the phenomenon of the historical faults and the positioning reasons, the troubleshooting means for the same or similar fault problems is established, and the fault case base comprises the classification, the retrieval, the deletion, the updating and the leading-in of the historical faults.
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