CN111766046B - Intelligent monitoring method and system for annealing aging of fiber Bragg grating - Google Patents
Intelligent monitoring method and system for annealing aging of fiber Bragg grating Download PDFInfo
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- CN111766046B CN111766046B CN202010489026.2A CN202010489026A CN111766046B CN 111766046 B CN111766046 B CN 111766046B CN 202010489026 A CN202010489026 A CN 202010489026A CN 111766046 B CN111766046 B CN 111766046B
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Abstract
The invention discloses a method and a system for intelligently monitoring an annealing and aging process of a fiber Bragg grating, belonging to the field of annealing and aging processes of the fiber Bragg grating. In the aging process, information such as grating wavelength, intensity, equipment setting parameters and the like is automatically monitored and recorded in real time, data results are analyzed and processed, data analysis results and aging processes are remotely accessed and checked in real time, if an accident happens, an alarm can be given in time, a notice is sent to a mobile terminal, and the mobile terminal can remotely control the on-off of the equipment power supply. The method ensures the safety of the annealing and aging process of the FBG, improves the working efficiency and is beneficial to quickly obtaining the high-quality stable FBG.
Description
Technical Field
The invention belongs to the field of fiber Bragg grating annealing and aging processes, and particularly relates to an intelligent monitoring method and system for annealing and aging of a fiber Bragg grating.
Background
In the preparation process of Fiber Bragg Grating (FBG), the Grating is written into the Fiber due to the refractive index change of the Fiber core, after the writing is finished, the refractive index change caused by the ultraviolet laser irradiation is unstable, which may cause the change of the Grating intensity and the central wavelength within a period of time, in order to remove the instability of the Grating caused by the ultraviolet laser irradiation, the stability of the Fiber Grating characteristic is generally accelerated by adopting an aging thermal annealing method, and the process is usually annealing at a certain temperature (80 ℃ -200 ℃) for tens of hours.
In the aging annealing process of the FBG, the control of the annealing temperature and the annealing time is particularly important, a large number of experiments are required, if the aging temperature is too high, the outer coating layer of the optical fiber can be damaged, and if the temperature is too low, the aging time can be greatly increased, so that the annealing characteristic of the grating, the change rule of the grating strength and the central wavelength need to be controlled, the optical characteristic of the grating is stabilized, and the requirement of engineering practical application is met.
The prior art, it is not yet present to appear being applied to FBG annealing process flow with intelligent control, no matter be experimental stage or actual production at present, all still adopt original artifical measuring, data record and collection and equipment on duty, consuming time and power, efficiency is lower, along with the quantity continuous increase of FBG production, the mode that continues to use each item data detection of artifical ageing annealing link to detect needs urgent improvement, need satisfy in the actual production guarantee equipment safety promptly and also improve the efficiency that detects, shorten the time that the manpower consumed.
Disclosure of Invention
Aiming at the defects or improvement requirements in the prior art, the invention provides an intelligent monitoring method and system for annealing and aging of fiber Bragg gratings, so that the technical problems of time and labor consumption and low efficiency in the conventional mode of manually detecting various data in the aging and annealing links are solved.
To achieve the above object, according to an aspect of the present invention, there is provided an intelligent monitoring system for annealing aging of fiber bragg gratings, including: the system comprises a thermostat, a constant temperature alcohol controller, a grating detection platform, a signal processor, an equipment monitor, a cloud platform and a monitoring platform;
the constant temperature box is used for placing an FBG sample to be aged; the tail end of the FBG sample to be aged, which is led out from a wire hole of the thermostat, is placed in the constant-temperature alcohol controller, and the alcohol in the constant-temperature alcohol controller is kept at a constant temperature all the time; the other end of the FBG sample to be aged, which is led out from the wire hole of the thermostat, is connected with the grating detection platform;
the grating detection platform is used for detecting the strength and the central wavelength of the aged grating in real time and transmitting the detected strength and the detected central wavelength of the grating to the signal processor;
the equipment monitor is connected with the signal processor, the thermostat and the constant temperature alcohol controller and is used for carrying out safety monitoring on the thermostat and the constant temperature alcohol controller which run in aging, monitoring the actual temperature and humidity of the thermostat and the constant temperature alcohol controller in running and collecting real-time pictures of the thermostat and the constant temperature alcohol controller in running;
the signal processor is used for recording, processing, displaying and analyzing the grating strength and the central wavelength sent by the grating detection platform and the actual temperature and humidity of the thermostat and the thermostatic alcohol controller monitored by the equipment monitor in operation, sending an alarm signal to the equipment monitor when the temperature of the thermostat and/or the thermostatic alcohol controller exceeds a preset abnormal temperature threshold value, and synchronizing the alarm signal to the cloud platform so that the equipment monitor controls the on-off of the power supplies of the thermostat and the thermostatic alcohol controller in a linkage manner after receiving the alarm signal;
the cloud platform is used for summarizing, recording and intelligently analyzing the grating strength and the central wavelength sent by the signal processor, the temperature and the humidity of the thermostat and the thermostatic alcohol controller in operation and various index information monitored by the equipment monitor, and recording operation pictures of the thermostat and the thermostatic alcohol controller monitored in real time;
and the monitoring platform is used for displaying and viewing various results and historical data after the cloud platform records and processes.
Preferably, the grating detection platform comprises an ASE light source, a circulator and a spectrometer;
the ASE light source is connected with the input port of the circulator, the isolation port of the circulator is connected with the input port of the spectrometer, the output port of the circulator is connected with the FBG sample to be aged, and the reflection intensity and the central wavelength information of the FBG sample to be aged can be detected and obtained on the spectrometer.
Preferably, the thermostatic alcohol controller is a closed container, and the inside is equipped with the absolute ethyl alcohol solution that concentration is 99%, and the optic fibre tail end that is carved with the FBG is by the thermostatic alcohol controller top fiber hole inserts in the solution in the thermostatic alcohol controller, just the thermostatic alcohol controller guarantees that inside solution temperature is invariable at 25 ℃.
Preferably, treat that ageing FBG sample chooses a plurality of at every turn and treats ageing FBG sample and age, and every treat that ageing FBG sample's one end is equallyd divide respectively with grating testing platform connects, and the other end all inserts extremely the constant temperature alcohol controller is arranged in solution, and does not contact the inner wall.
Preferably, the cloud platform is used for recording and analyzing the grating strength, the central wavelength information, and the actual temperature and humidity information of the operation of the thermostat and the thermostatic alcohol controller to obtain the temperature, humidity and time required for stabilizing the FBG gratings of the same type at the highest speed.
Preferably, the cloud platform is configured to retrieve aging experimental data of the FBGs of the previous type according to the type of the FBG sample to be aged, refer to the experimental data, automatically select temperature and humidity process parameters of an aging process, fit an aging curve, and display a temperature and humidity process parameter corresponding to the shortest time required for aging of the FBGs of the type and a time result obtained by the fitting.
Preferably, the system further comprises: a mobile terminal;
the mobile terminal is used for receiving various information sent by the cloud platform, checking various historical data in real time and sending a control instruction to the cloud platform, wherein the information sent by the cloud platform comprises the alarm signal, and the control instruction is used for indicating the equipment monitor to control the on-off of the power supplies of the constant temperature box and the constant temperature alcohol controller.
According to another aspect of the present invention, there is provided an intelligent monitoring method based on any one of the above intelligent monitoring systems for annealing and aging of fiber bragg gratings, including:
s1: placing a plurality of FBG samples to be aged into the constant temperature box, cutting one end of each FBG sample to be aged flat and penetrating through a wire hole of the constant temperature box, and then inserting into the constant temperature alcohol controller, wherein the other end of each FBG sample to be aged is connected with the grating detection platform;
s2: the grating detection platform reads the initial grating strength and the central wavelength of each FBG sample to be aged, transmits the initial grating strength and the central wavelength of each FBG sample to be aged to the signal processor for recording, and synchronizes the initial grating strength and the central wavelength of each FBG sample to be aged to the cloud platform;
s3: setting the temperature and humidity of the thermostat, setting the alcohol temperature in the thermostatic alcohol controller, and acquiring index setting information of the thermostat and the thermostatic alcohol controller by the equipment monitor, wherein the index setting information comprises the set temperature, humidity and running time, and synchronizing the index setting information of the thermostat and the thermostatic alcohol controller to the cloud platform;
s4: acquiring and recording the grating strength and the central wavelength information of each FBG sample to be aged at the same time every day until the grating strength and the central wavelength are stable, and intelligently analyzing each item of information of the aging by the cloud platform;
s5: changing the temperature and humidity of the incubator, keeping the temperature of alcohol in the constant-temperature alcohol controller unchanged, replacing the FBG sample to be aged, repeating the steps S2-S3, intelligently analyzing out the temperature and humidity of the incubator with the minimum consumption through the cloud platform after a plurality of tests, enabling the FBG sample to be aged to reach the stably set temperature and humidity of the incubator, finishing the aging of the produced large-batch gratings according to the process, and monitoring in real time.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects: the equipment monitor is adopted to monitor the constant temperature box and the constant temperature alcohol controller in the annealing process in real time, monitoring pictures and monitoring data can be checked and called at any time, the equipment power failure can be controlled in time when abnormal conditions occur, the automatic safe operation of the equipment is ensured, the grating detection platform carries out real-time detection on the aged grating strength and the central wavelength, the data are synchronized to the cloud platform, the intelligent detection of an aging link is ensured, the time consumed by artificial detection is greatly reduced, the efficiency is improved, various items of information recorded by the cloud platform can be checked and analyzed in real time to obtain the aging temperature and humidity which are required to be set for the same type of grating to reach the stability at the fastest speed, the manpower and time consumed for carrying out a large number of experiments are greatly reduced, and the intelligent detection of the FBG aging link is realized.
Drawings
FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an intelligent monitoring method for annealing and aging of a fiber bragg grating according to an embodiment of the present invention;
the device comprises a thermostat 1, a wire guide 11, a thermostatic alcohol controller 2, an FBG sample to be aged 3, a first FBG sample to be aged 31, a second FBG sample to be aged 32, a third FBG sample to be aged 33, a 4-grating detection platform, a 41-ASE light source 42, a circulator 43, a spectrometer 5, an information processor 6, a device monitor 61, a monitoring camera 7, a cloud platform 8, a monitoring platform 9 and a mobile terminal 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the present examples, "first", "second", etc. are used for distinguishing different objects, and are not necessarily used for describing a particular order or sequence.
Example one
Fig. 1 is a schematic structural diagram of an intelligent monitoring system for annealing and aging of a fiber bragg grating according to an embodiment of the present invention, including: thermostated container 1, thermostatic alcohol controller 2, treat ageing FBG sample 3, grating testing platform 4, signal processor 5, equipment watch-dog 6, cloud platform 7, monitor platform 8 and removal end 9, carry out grating parameter detection by grating testing platform 4 to the FBG sample 3 of treating ageing of placing in thermostated container 1, equipment watch-dog 6 monitors the index and the actual index that thermostated container 1 and thermostatic alcohol controller 2 set up, grating testing platform 4 and equipment watch-dog 6 give signal processor 5 with data transmission, and synchronous to cloud platform 7, cloud platform 7 is with data display on monitor platform 8, send propelling movement information to removal end 9, the intelligent control of ageing link has been guaranteed.
Specifically, the grating detection platform 4 is configured to detect the strength and the center wavelength of the aged grating in real time, and transmit the detected strength and the detected center wavelength of the grating to the signal processor 5;
the equipment monitor 6 is connected with the signal processor 5, the thermostat 1 and the thermostatic alcohol controller 2, and is used for carrying out safety monitoring on the thermostat 1 and the thermostatic alcohol controller 2 which operate in aging, monitoring the actual temperature and humidity of the thermostat 1 and the thermostatic alcohol controller 2 in operation, and acquiring real-time pictures of the operation of the thermostat 1 and the thermostatic alcohol controller 2;
the signal processor 5 is used for recording, processing, displaying and analyzing the grating strength and the central wavelength sent by the grating detection platform 4 and the actual temperature and humidity of the thermostat 1 and the thermostatic alcohol controller 2 monitored by the equipment monitor 6 during operation, sending an alarm signal to the equipment monitor 6 when the temperature of the thermostat 1 and/or the thermostatic alcohol controller 2 exceeds a preset abnormal temperature threshold value, and synchronizing the alarm signal to the cloud platform 7 so that the equipment monitor 6 controls the on-off of the power supplies of the thermostat 1 and the thermostatic alcohol controller 2 in a linkage manner after receiving the alarm signal;
the cloud platform 7 is used for summarizing, recording and intelligently analyzing the grating strength and the central wavelength sent by the signal processor 5, the temperature and the humidity of the thermostat 1 and the thermostatic alcohol controller 2 in operation and various index information monitored by the equipment monitor 6, simultaneously recording operation pictures of the thermostat 1 and the thermostatic alcohol controller 2 monitored in real time, sending an alarm signal to the mobile terminal 9, and sending an instruction to the equipment monitor 6 to control the on-off of the power supply of the thermostat 1 and the thermostatic alcohol controller 2 by receiving the instruction of the mobile terminal 9;
the monitoring platform 8 is used for displaying and viewing various results and historical data recorded and processed by the cloud platform 7; and the mobile terminal 9 is used for receiving various messages sent by the cloud platform 7, sending power on-off instructions of the thermostat 1 and the thermostatic alcohol controller 2 to the cloud platform 7, and checking various historical data in real time.
Further, the oven 1 can set a fixed temperature and humidity and be kept constant, and can also set the time of operation.
Further, the thermostatic alcohol controller 2 is a closed container, the concentration of the absolute ethyl alcohol solution filled in the thermostatic alcohol controller 2 can be 99%, the tail end of the optical fiber with the FBG etched is inserted into the solution in the thermostatic alcohol controller 2 through an optical fiber hole above the thermostatic alcohol controller 2, and the thermostatic alcohol controller 2 can ensure that the temperature of the internal solution is constant at 25 ℃.
Further, the mobile terminal 9 described in the embodiment of the present invention includes, but is not limited to, other portable devices such as a mobile phone, a laptop computer, or a tablet computer.
Further, the apparatus monitor 6 may monitor the set temperature, humidity, actual temperature and actual humidity of the incubator 1, and the set temperature and actual temperature of the thermostatic alcohol controller 2.
In a specific embodiment of the present invention, the grating detection platform 4 comprises an ASE light source 41, a circulator 42 and a spectrometer 43, the input end of the grating detection platform 4 is connected to the FBG sample 3 to be aged, and the on-line inspection of the grating intensity and the center wavelength is performed on the FBG sample 3 to be aged.
The ASE light source 41 is connected with an input port of the circulator 42, an isolation port of the circulator 42 is connected with an input port of the spectrometer 43, an output port of the circulator 42 is connected with the FBG sample 3 to be aged, and the reflection intensity and the central wavelength information of the FBG sample 3 to be aged can be detected on the spectrometer 43.
Specifically, the ASE light source 41 is configured to output a broad spectrum of 1526nm to 1566nm, and can ensure stability of output power, have low coherence and excellent spectral flatness, and select a center wavelength thereof; the circulator 42 is used for the bidirectional transmission of optical signals on one optical fiber and has extremely high isolation degree on input and reflected optical power; the spectrometer 43 is used for processing and analyzing the grating spectrum information, including the center wavelength and the reflection intensity.
Further, 2-3 to-be-aged FBG samples 3 are selected for aging at each time, including a first to-be-aged FBG sample 31, a second to-be-aged FBG sample 32 and a third to-be-aged FBG sample 33, wherein one end of each sample is connected with the grating detection platform 4.
Further, the other ends of the first to-be-aged FBG sample 31, the second to-be-aged FBG sample 32 and the third to-be-aged FBG sample 33 are cut flat and then inserted into the thermostatic alcohol controller 2 without contacting the inner wall, and are placed in the solution.
The side of the box body of the constant temperature box 1 is provided with a wire hole 11, so that two ends of the FBG sample 3 to be aged can be led out conveniently.
The signal processor 5 can set temperature abnormal threshold values in the thermostat 1 and the thermostatic alcohol controller 2, when actual temperature data collected by the equipment monitor 6 exceeds the threshold values, the signal processor 5 can send instructions to the equipment monitor 6, linkage control is carried out on the thermostat 1 and the thermostatic alcohol controller 2, a power supply is turned off, accidents are prevented, and abnormal information is sent to the mobile terminal 9 through the cloud platform 7.
The equipment monitor 6 internally comprises a monitoring camera 61 which can record the real-time picture of the aging link and upload the picture to the cloud platform 7, and the historical picture can be checked and called in real time on the cloud platform 7.
The mobile terminal 9 can remotely send an instruction to the cloud platform 7, so that the control equipment monitor 6 can carry out on-off operation of a power supply on the thermostat 1 and the constant-temperature alcohol controller 2, and can also remotely access the cloud platform 7 to check the data result of recording and analysis in real time.
The cloud platform 7 can record and analyze the uploaded grating strength, central wavelength information, actual temperature and humidity information of the equipment, and obtain the temperature, humidity and required time for stabilizing the FBG gratings of the same type at the fastest speed.
Further, the cloud platform 7 can obtain the temperature, humidity and required time for stabilizing the FBG grating at the fastest speed by the following methods:
the cloud platform 7 is used for calling a large amount of aging experimental data of the FBGs of the type in the early stage according to the type of the FBG sample 3 to be aged, referring to the experimental data, automatically selecting technological parameters such as temperature and humidity in the aging process, fitting an aging curve, and displaying the temperature and humidity technological parameter setting corresponding to the shortest time required by the aging of the FBGs of the type and the time result obtained after fitting.
The system greatly improves the detection efficiency of the FBG aging link, and can ensure the safety of equipment operation in unattended time, so that the FBG aging annealing link can be monitored intelligently.
Example two
Fig. 2 is a schematic flow chart of an intelligent monitoring method for annealing and aging of a fiber bragg grating according to an embodiment of the present invention, which includes the following steps:
s1: placing the FBG sample 3 to be aged into the thermostat 1, cutting one end of each of a first FBG sample 31 to be aged, a second FBG sample 32 to be aged and a third FBG sample 33 to be aged flat and passing through a wire hole 11 of the thermostat 1, inserting the FBG samples into the thermostatic alcohol controller 2, and connecting the other end of the optical fiber with the grating detection platform 4;
s2: the grating detection platform 4 firstly detects the initial grating strength and the central wavelength of the FBG sample 3 to be aged, transmits grating information to the signal processor 5 for recording, and synchronizes data to the cloud platform 7;
s3: setting the temperature and humidity of the thermostat 1 and the alcohol temperature in the thermostatic alcohol controller 2, and acquiring index setting information of the thermostat 1 and the thermostatic alcohol controller 2 in real time by the equipment monitor 6, wherein the index setting information comprises the set temperature, humidity and running time, and synchronizing the index setting information to the cloud platform 7;
s4: acquiring and recording the grating strength and the central wavelength information at the same time every day until the grating strength and the central wavelength are stable, and intelligently analyzing each item of information aged at this time by the cloud platform 7;
s5: changing the set temperature and humidity of the incubator 1, keeping the temperature of alcohol in the thermostatic alcohol controller 2 unchanged, replacing the FBG sample 3 to be aged, repeating the steps S2-S3, intelligently analyzing the minimum time spent by the cloud platform 7 through a plurality of tests to ensure that the FBG sample 3 to be aged reaches the temperature and humidity of the incubator 1 which are stably set, carrying out aging operation on the produced large-batch grating according to the process, and monitoring in real time.
The invention provides an intelligent monitoring system and a method for annealing and aging of a fiber Bragg grating, which automatically detect the characteristics of the produced grating to be aged, including strength and central wavelength, on line by a grating detection platform, monitor the safety of a thermostat and a thermostatic alcohol controller device which operate in aging by an equipment monitor, monitor the actual temperature and humidity of the equipment in operation, automatically acquire various setting parameters of the equipment in real time, send data acquired by the grating detection platform and the equipment monitor to a signal processor for processing, send an alarm signal to the equipment monitor when abnormal temperature occurs to the equipment, control the power off of the equipment, ensure the safety of an annealing link, synchronize the information processed by the signal processor on a cloud platform, and obtain the aging process parameters when the FBGs produced in each batch are stable as soon as possible by intelligent analysis, the aging process of the large-batch grating is guided, the working efficiency is greatly improved, and the time for artificially detecting and monitoring equipment is reduced. The data analysis result of the cloud platform can be checked at the mobile end, the mobile end can send an instruction to the cloud platform, the on-off of the power supply of the equipment is remotely controlled in real time, the intelligent monitoring of the FBG aging process is realized, and great convenience is brought to the production link.
It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An intelligent monitoring system for annealing aging of a fiber Bragg grating is characterized by comprising: the system comprises a thermostat, a constant temperature alcohol controller, a grating detection platform, a signal processor, an equipment monitor, a cloud platform and a monitoring platform;
the constant temperature box is used for placing an FBG sample to be aged; the tail end of the FBG sample to be aged, which is led out from a wire hole of the thermostat, is placed in the constant-temperature alcohol controller, and the alcohol in the constant-temperature alcohol controller is kept at a constant temperature all the time; the other end of the FBG sample to be aged, which is led out from the wire hole of the thermostat, is connected with the grating detection platform;
the grating detection platform is used for detecting the strength and the central wavelength of the aged grating in real time and transmitting the detected strength and the detected central wavelength of the grating to the signal processor;
the equipment monitor is connected with the signal processor, the constant temperature box and the constant temperature alcohol controller and is used for carrying out safety monitoring on the constant temperature box and the constant temperature alcohol controller which operate in aging, monitoring the actual temperature and humidity of the constant temperature box and the constant temperature alcohol controller in operation and collecting real-time pictures of the constant temperature box and the constant temperature alcohol controller in operation;
the signal processor is used for recording, processing, displaying and analyzing the grating strength and the central wavelength sent by the grating detection platform and the actual temperature and humidity of the thermostat and the thermostatic alcohol controller monitored by the equipment monitor in operation, sending an alarm signal to the equipment monitor when the temperature of the thermostat and/or the thermostatic alcohol controller exceeds a preset abnormal temperature threshold value, and synchronizing the alarm signal to the cloud platform so that the equipment monitor controls the on-off of the power supplies of the thermostat and the thermostatic alcohol controller in a linkage manner after receiving the alarm signal;
the cloud platform is used for summarizing, recording and intelligently analyzing the grating strength and the central wavelength sent by the signal processor, the temperature and the humidity of the thermostat and the thermostatic alcohol controller in operation and various index information monitored by the equipment monitor, and recording operation pictures of the thermostat and the thermostatic alcohol controller monitored in real time;
the monitoring platform is used for displaying and viewing various results and historical data after the cloud platform records are processed;
the cloud platform is used for calling aging experimental data made by the FBGs of the type in the early stage according to the type of the FBG sample to be aged, referring to the experimental data, automatically selecting temperature and humidity process parameters in an aging process, fitting an aging curve, and displaying the temperature and humidity process parameters corresponding to the shortest time required by the aging of the FBGs of the type and a time result obtained after fitting in the aging curve.
2. The system of claim 1, wherein the grating detection platform comprises an ASE light source, a circulator, and a spectrometer;
the ASE light source is connected with an input port of the circulator, an isolation port of the circulator is connected with an input port of the spectrometer, an output port of the circulator is connected with the FBG sample to be aged, and the reflection intensity and the central wavelength information of the FBG sample to be aged are obtained through detection on the spectrometer.
3. The system of claim 1, wherein the thermostatic alcohol controller is a closed container, the container is filled with 99% absolute ethanol solution, the tail end of the optical fiber with the marked FBG is inserted into the solution in the thermostatic alcohol controller through an optical fiber hole above the thermostatic alcohol controller, and the thermostatic alcohol controller ensures that the temperature of the internal solution is constant at 25 ℃.
4. The system according to any one of claims 1 to 3, wherein a plurality of FBG samples to be aged are selected for aging each time, one end of each FBG sample to be aged is connected with the grating detection platform, and the other end of each FBG sample to be aged is inserted into the constant temperature alcohol controller and placed in the solution without contacting the inner wall.
5. The system according to claim 4, wherein the cloud platform is used for recording and analyzing the grating strength, the central wavelength information, and the actual temperature and humidity information of the operation of the incubator and the thermostatic alcohol controller to obtain the temperature, humidity and time required for the FBG gratings of the same type to reach the stability most quickly.
6. The system of claim 5, further comprising: a mobile terminal;
the mobile terminal is used for receiving various information sent by the cloud platform, checking various historical data in real time and sending a control instruction to the cloud platform, wherein the information sent by the cloud platform comprises the alarm signal, and the control instruction is used for indicating the equipment monitor to control the on-off of the power supplies of the constant temperature box and the constant temperature alcohol controller.
7. An intelligent monitoring method based on the intelligent monitoring system for annealing and aging of fiber bragg gratings according to any one of claims 1 to 6, comprising the following steps:
s1: placing a plurality of FBG samples to be aged into the thermostat, cutting one end of each FBG sample to be aged flat and penetrating through a wire hole of the thermostat, inserting the FBG sample to be aged into the constant temperature alcohol controller, and connecting the other end of each FBG sample to be aged with the grating detection platform;
s2: the grating detection platform reads the initial grating strength and the central wavelength of each FBG sample to be aged, transmits the initial grating strength and the central wavelength of each FBG sample to be aged to the signal processor for recording, and synchronizes the initial grating strength and the central wavelength of each FBG sample to be aged to the cloud platform;
s3: setting the temperature and humidity of the incubator, setting the alcohol temperature in the constant-temperature alcohol controller, and acquiring index setting information of the incubator and the constant-temperature alcohol controller by the equipment monitor, wherein the index setting information comprises the set temperature, humidity and running time, and synchronizing the index setting information of the incubator and the constant-temperature alcohol controller to the cloud platform;
s4: acquiring and recording the grating strength and the central wavelength information of each FBG sample to be aged at the same time every day until the grating strength and the central wavelength are stable, and intelligently analyzing each item of information of the aging by the cloud platform;
s5: changing the temperature and the humidity of the incubator, keeping the temperature of alcohol in the thermostatic alcohol controller unchanged, replacing the FBG sample to be aged, repeating the steps S2-S3, carrying out a plurality of tests, calling aging test data of the FBG of the type at the early stage according to the type of the FBG sample to be aged through the cloud platform, referring to the test data, automatically selecting temperature and humidity process parameters in the aging process, fitting an aging curve, displaying the temperature and humidity process parameters corresponding to the shortest time required by the aging of the FBG of the type and a time result obtained after fitting in the aging curve, finishing the aging of the produced large-batch gratings according to the temperature and humidity process of the incubator which is stably set when the consumed minimum time is used for the FBG sample to be aged, and carrying out real-time monitoring.
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| TW482909B (en) * | 2001-02-13 | 2002-04-11 | Broptics Comm Corp | Optical fiber Bragg grating thermal compensating device and method for manufacturing same |
| CN102362204B (en) * | 2009-01-21 | 2014-01-15 | 印度信息技术部秘书处 | A process and system for manufacturing stable fiber bragg gratings (FBGS) |
| US20170181646A1 (en) * | 2014-10-31 | 2017-06-29 | Lake Region Medical, Inc. | Membrane-Free Fiber Bragg Grating Pressure Sensing Guidewire |
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| CN107990926B (en) * | 2017-11-23 | 2019-08-20 | 武汉理工大学 | Fiber grating based on wavelength shift locks demodulating system and method one by one |
| CN207780303U (en) * | 2018-01-26 | 2018-08-28 | 深圳伊讯科技有限公司 | A kind of high temperature ageing insulating box control optical fiber annealing device |
| CN109540834A (en) * | 2018-12-13 | 2019-03-29 | 深圳市太赫兹科技创新研究院 | A kind of cable aging monitoring method and system |
| CN110264660A (en) * | 2019-07-11 | 2019-09-20 | 上海腾盛智能安全科技股份有限公司 | A kind of accurate positioning intelligent fiber grating fire detecting system |
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