CN102401701A - Method for improving temperature measurement stability of fiber grating sensor system - Google Patents
Method for improving temperature measurement stability of fiber grating sensor system Download PDFInfo
- Publication number
- CN102401701A CN102401701A CN2010102790410A CN201010279041A CN102401701A CN 102401701 A CN102401701 A CN 102401701A CN 2010102790410 A CN2010102790410 A CN 2010102790410A CN 201010279041 A CN201010279041 A CN 201010279041A CN 102401701 A CN102401701 A CN 102401701A
- Authority
- CN
- China
- Prior art keywords
- fiber
- grating sensor
- optic grating
- wavelength
- reflection peak
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000835 fiber Substances 0.000 title claims abstract description 28
- 238000009529 body temperature measurement Methods 0.000 title abstract description 3
- 238000005192 partition Methods 0.000 claims abstract description 36
- 238000001228 spectrum Methods 0.000 claims abstract description 19
- 238000007689 inspection Methods 0.000 claims description 6
- 238000000638 solvent extraction Methods 0.000 abstract description 2
- 239000013307 optical fiber Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000739 chaotic effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011551 heat transfer agent Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a method for improving temperature measurement stability of a fiber grating sensor system, which comprises the following steps: determining the wavelength dynamic partition of each fiber grating sensor corresponding to the temperature dynamic partition according to the inherent central wavelength of each fiber grating sensor of the fiber grating sensor system channel; dynamically partitioning according to the wavelength of each fiber grating sensor, and sequentially checking reflection peaks in the spectrum of each fiber grating sensor from the channel; calculating the temperature value of each fiber grating sensor from the detected reflection peak according to the corresponding relation between the wavelength and the temperature of the reflection peak of each fiber grating sensor; and determining the position of the fiber grating sensor in the channel according to the reflection peak corresponding to each wavelength dynamic partition.
Description
Technical field
The present invention relates to a kind of sensor temp measuring method, particularly in a kind of method that can improve fiber-optic grating sensor system thermometric stability.
Background technology
Fiber-optic grating sensor belongs to a kind of of Fibre Optical Sensor, is through extraneous physical parameter heat transfer agent to be obtained in the modulation of optical fiber Bragg wavelength based on the sensing process of fiber grating, is a kind of wavelength-modulated type Fibre Optical Sensor.Because natural compatibility between fiber grating and the optical fiber; Be easy to a plurality of fiber gratings are connected on the optical fiber and constitute optical fiber optical grating array; Realize quasi-distributed sensing; Add that fiber grating has outside many advantages of ordinary optic fibre; And the transducing signal of itself is a wavelength-modulated, and measuring-signal does not receive the characteristics that light source rises and falls, bending loss of optical fiber is not influenced by light source power fluctuation and system loss, so fiber grating has caused the relevant scholars' in countries in the world extensive concern and very big interest optical fiber grating temperature-measuring system characteristics in the application of sensory field.
Fiber-optic grating sensor has the advantage that other sensors can't replace, and wherein fiber-optic grating sensor is a full fiber type, and the scene need not power supply, and does not receive the influence of electromagnetic interference (EMI) and nuclear radiation; Fibre Optical Sensor satisfies power equipment and requires measuring accuracy and resolution high to the harshness of security and reliability, and temperature measurement accuracy is ± 0.3 ℃, and thermometric branch rate distinguishes to be 0.01 ℃; And response speed is fast, has constant temperature and differential temperature alert capability; System has the high capacity extended capability: follow-up dilatation need not to change main frame, only needs to increase fibre optic temperature sensor and just can realize concentrating on-line monitoring; Easy maintenance is installed fast.
But because the fiber grating demodulation device is when gathering the fiber grating reflection wavelength; Be that the wavelength basis size is carried out tactic; If the size order according to wavelength does not come fiber-optic grating sensor is connected in series; Or under the situation of carrying out parallel connection, the situation of breaking off has appearred in a few fiber-optic grating sensors wherein, perhaps last several disconnections and the disappearance of certain or certain several reflection peaks in the middle of in spectrum, being shown as in the fiber-optic grating sensor of serial connection; Can cause crosstalking of each sensing station on the whole link like this with chaotic, so the less stable of existing fiber grating sensor system thermometric.
Traditional solution is when assembling welding, requires to come welding according to the size order of centre wavelength, and the overtemperature fault alarm is set; FBG sensor light fiber grating sensor to each string FBG fiber-optic grating sensor or each group parallel connection is all provided the configuration sequence table that dispatches from the factory accordingly; Will fill in complete methods such as erection sequence table during project installation, this process is installed complicated, and extendability is poor; Installation procedure is required height, be inappropriate for the large-scale application of fiber-optic grating sensor.
Summary of the invention
The object of the present invention is to provide a kind of method that improves fiber-optic grating sensor system thermometric stability; This invention can be discerned the position of each corresponding sensor of the reflectance spectrum medium wave peak that demodulates and the temperature of expression thereof; The variation that prevents spectral position causes demodulation the mistake in the identification to occur; Cause that sensor is chaotic, and send alerting signal.
According to an aspect of the present invention; A kind of method that improves fiber-optic grating sensor system thermometric stability is provided; Comprise:, confirm the wavelength dynamic partition of each fiber-optic grating sensor corresponding to the temperature dynamic subregion A1) according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel;
A2) by the wavelength dynamic partition of each fiber-optic grating sensor, inspection is derived from the reflection peak in the spectrum of each fiber-optic grating sensor of said passage successively;
A3), calculate the temperature value of each fiber-optic grating sensor from the reflection peak that is checked through according to the wavelength of the reflection peak of each fiber-optic grating sensor and the corresponding relation of temperature.
Particularly, according to reflection peak, confirm the position of fiber-optic grating sensor in the said passage corresponding to each fiber grating sensor wavelength dynamic partition.
Wherein steps A 1) also comprise: the number of the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage is compared;
If the number of said reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage, the pairing fiber-optic grating sensor of wavelength dynamic partition that then will lack reflection peak is given failure identification;
If the number of said reflection peak is then given fault value with fiber-optic grating sensors all in the said passage greater than the number of sensors that disposes in the said passage.
In addition, if the number of said reflection peak is less than or more than the number of the fiber-optic grating sensor that disposes in the said passage, then send alerting signal.
Wherein, the wavelength dynamic partition comprises with fiber-optic grating sensor centre wavelength being the range of wavelengths at center, in this range of wavelengths, dynamically marks off with the normal temperature zone, overtemperature is regional and the corresponding wavelength region may in fault zone.
According to a further aspect in the invention, the present invention also provides a kind of method that improves fiber-optic grating sensor system thermometric stability, comprising:
B1) confirm the wavelength dynamic partition of each light grating sensor according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel corresponding to the temperature dynamic subregion;
B2) be derived from the reflection peak in the spectrum of said each fiber-optic grating sensor by the inspection of the wavelength dynamic partition of each fiber-optic grating sensor;
B3) number with the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage compares;
B4) if the number of said reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage; Then seek the wavelength dynamic partition that lacks reflection peak, and give failure identification the pairing fiber-optic grating sensor of wavelength dynamic partition that lacks reflection peak that finds;
B5) if the number of said reflection peak greater than the number of sensors that disposes in the said passage, is then given fault value with all fiber-optic grating sensors in the said passage.
Wherein, if the number of said reflection peak is less than or more than the number of the fiber-optic grating sensor that disposes in the said passage, then send alerting signal.
Particularly, according to the reflection peak wavelength of each fiber-optic grating sensor and the corresponding relation of temperature, calculate the temperature value of each fiber-optic grating sensor.
Wherein, the wavelength dynamic partition comprises with fiber-optic grating sensor centre wavelength being the range of wavelengths at center, in this range of wavelengths, dynamically marks off with the normal temperature zone, overtemperature is regional and the corresponding wavelength region may in fault zone.
Wherein, be arranged in order each fiber-optic grating sensor in the said passage, in the case,, confirm the position of fiber-optic grating sensor in the said passage according to reflection peak corresponding to each wavelength dynamic partition by spectrum medium wavelength size order.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention does not change the physical layout situation of original sensor; Working temperature zone to original sensor is divided; And the work wave in definite each working sensor temperature province; Then through the work wave of each sensor of confirming and the relation of temperature, can confirm the position and the temperature of the pairing sensor of each reflection peak in the spectrum of demodulation in the passage.
2, the present invention has utilized position and the temperature to each sensor and each sensor of its working temperature zone method for dynamically partitioning judgement; Its temperature province to each sensor is divided and can be solidificated in the program the inside that each sensor is provided with, and is convenient to the analysis to each sensor.
3, the present invention can compare to number of sensors in the peak value of the sensor that demodulates and the passage; Thereby confirm that in the whole frame spectrum be other faults such as multimodal phenomenon or few peak phenomenon; And avoid these mistakes that total system is impacted and damages to greatest extent; When guaranteeing wrong the generation to greatest extent, system still can operate as normal, and makes reflection.
Description of drawings
Fig. 1 is the particular flow sheet of the embodiment of the invention one;
Fig. 2 is the temperature province partition structure figure of fiber-optic grating sensor among the present invention;
Fig. 3 is the particular flow sheet of the embodiment of the invention two;
Fig. 4 is the overall flow figure of processes sensor fault in the embodiment of the invention two.
Embodiment
, should be appreciated that following illustrated preferred embodiment only is used for explanation and explains the present invention, and be not used in qualification the present invention a preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing.
Embodiment one
The present invention proposes a kind of method that improves fiber-optic grating sensor system thermometric stability, specifically describe as follows:
As shown in Figure 1, improve the stable method of fiber-optic grating sensor system thermometric
S11 according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel, confirms the wavelength dynamic partition of each fiber-optic grating sensor corresponding to the temperature dynamic subregion;
S12, by the wavelength dynamic partition of each fiber-optic grating sensor, inspection is derived from the reflection peak in the spectrum of each fiber-optic grating sensor of said passage successively;
S13 according to the wavelength of the reflection peak of each fiber-optic grating sensor and the corresponding relation of temperature, calculates the temperature value of each fiber-optic grating sensor from the reflection peak that is checked through.
This method has been utilized the unduplicated characteristics of centre wavelength of sensor in each passage; With the centre wavelength process of sensor and the conversion of temperature relation; Draw temperature sensor in its operating temperature range interval with the relation of wavelength; The working temperature interval division of sensor can be divided according to actual conditions, and is as shown in Figure 2, shown that the temperature province of a fiber-optic grating sensor is divided; For each sensor a normal operation region and overtemperature zone and fault zone are arranged all, surpass normal operation region and get into the processing of can reporting to the police of overtemperature zone or fault zone.
According to each fiber-optic grating sensor and its working temperature zone and centre wavelength information; Setting up each sensor is the working temperature/wavelength region may of the range of wavelengths at center with fiber-optic grating sensor centre wavelength; Its working temperature/wavelength region may comprises and dynamically marking off in this range of wavelengths of this sensor as shown in Figure 2 with the normal temperature zone, overtemperature is regional and the corresponding wavelength region may in fault zone; Because the centre wavelength of each sensor is different, so the working temperature/wavelength region may of each sensor is also different.
Operation wavelength/the temperature range of each sensor forms corresponding a plurality of dynamic partitions in the passage in the whole frame spectrum of this passage; Compare one by one through sensor peak value that demodulation is come out and a plurality of subregions on the whole frame spectrum; The reflection peak of a corresponding sensor in each dynamic partition can accurately reflect the temperature value of each section post corresponding sensor on the spectrum and reflection thereof.
The number of the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage is compared; When the number of reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage, the pairing fiber-optic grating sensor of wavelength dynamic partition that then will lack reflection peak is given failure identification and is sent warning message; When the number of sensors that the number of reflection peak disposes in greater than said passage, then give fault value, and send warning message fiber-optic grating sensors all in the said passage.
Embodiment two,
According to a further aspect in the invention, the another kind of method that improves fiber-optic grating sensor system thermometric stability of the present invention, as shown in Figure 3, specifically describe as follows:
S31 confirms the wavelength dynamic partition of each light grating sensor corresponding to the temperature dynamic subregion according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel;
S32 is derived from the reflection peak in the spectrum of said each fiber-optic grating sensor by the inspection of the wavelength dynamic partition of each fiber-optic grating sensor;
S33 compares the number of the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage;
S34 is if the number of said reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage; Then seek the wavelength dynamic partition that lacks reflection peak, and give failure identification the pairing fiber-optic grating sensor of wavelength dynamic partition that lacks reflection peak that finds;
S35 is if the number of said reflection peak greater than the number of sensors that disposes in the said passage, is then given fault value with all fiber-optic grating sensors in the said passage.
Wherein, identical for the division of the working temperature/wavelength region may of each sensor with the method for embodiment one, repeat no more at this.Problem solution analysis to the fiber-optic grating sensor reflection peak is as shown in the table usually:
Through fault analysis and solution are not difficult to find out; The damage maintenance difficulty of fiber-optic grating sensor is maximum, if quick check to sensor and the position thereof damaged, can effectively improve the maintenance efficiency of fiber-optic grating sensor system; Improve fiber-optic grating sensor system service efficiency; The present invention can confirm the position at the sensor place of damage fast, prevents to cause that the normal sensor that unusual sensor back occurs receives serious configuration and crosstalks, the influence maintenance.
As shown in Figure 4 among the present invention to the overall flow figure of processes sensor fault; Suppose that wherein the number of sensors that disposes in the passage is M; The reflection peak number that demodulation is come out in the corresponding spectrum of sensor in the passage is N, judges the fault of fiber optic, light upper sensor system through the size that compares M and N.
If N=M, the number of sensors that is provided with in the number of the reflection peak that then the spectrum demodulation is come out in the passage and this passage is identical, explains that working sensor is normal in this passage.
If N＜M; The number of the reflection peak that then the spectrum demodulation is come out in the passage is few peak phenomenon less than the number of sensors that is provided with in this passage, and concrete grammar does; Carry out above-mentioned steps S31, S32, S33 and S34; Confirm to lack the wavelength dynamic partition and the corresponding sensor thereof of reflection peak, and, initiate alerting signal then this sensor assignment; To (out of order sensor assignment is-9999.9 ℃) in the passage that M sensor reading arranged, wherein the relative position of the normal sensor of reading in link is constant, and the actual geographic position of each sensor that in system, shows accordingly is also constant.
If N＞M, the number of the reflection peak that then the spectrum demodulation is come out in the passage is the multimodal phenomenon greater than the number of sensors that is provided with in this passage; Concrete grammar does; Carry out above-mentioned steps S31, S32, S33 and S35, and, initiate alerting signal then all the sensors assignment in this passage.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. one kind is improved the stable method of fiber-optic grating sensor system thermometric, it is characterized in that comprising:
A1), confirm the wavelength dynamic partition of each fiber-optic grating sensor corresponding to the temperature dynamic subregion according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel;
A2) by the wavelength dynamic partition of each fiber-optic grating sensor, inspection is derived from the reflection peak in the spectrum of each fiber-optic grating sensor of said passage successively;
A3), calculate the temperature value of each fiber-optic grating sensor from the reflection peak that is checked through according to the wavelength of the reflection peak of each fiber-optic grating sensor and the corresponding relation of temperature.
2. method according to claim 1 is characterized in that, according to the reflection peak corresponding to each fiber grating sensor wavelength dynamic partition, confirms the position of fiber-optic grating sensor in the said passage.
3. method according to claim 1 is characterized in that, said steps A 1) also comprise:
The number of the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage is compared;
If the number of said reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage, the pairing fiber-optic grating sensor of wavelength dynamic partition that then will lack reflection peak is given failure identification;
If the number of said reflection peak is then given fault value with fiber-optic grating sensors all in the said passage greater than the number of sensors that disposes in the said passage.
4. method according to claim 3 is characterized in that, if the number of said reflection peak is less than or more than the number of the fiber-optic grating sensor that disposes in the said passage, then send alerting signal.
5. method according to claim 1; It is characterized in that; Said wavelength dynamic partition comprises with fiber-optic grating sensor centre wavelength being the range of wavelengths at center, in this range of wavelengths, dynamically marks off with the normal temperature zone, overtemperature is regional and the corresponding wavelength region may in fault zone.
6. one kind is improved the stable method of fiber-optic grating sensor system thermometric, it is characterized in that comprising:
B1) confirm the wavelength dynamic partition of each light grating sensor according to the intrinsic centre wavelength of each fiber-optic grating sensor of fiber-optic grating sensor system channel corresponding to the temperature dynamic subregion;
B2) be derived from the reflection peak in the spectrum of said each fiber-optic grating sensor by the inspection of the wavelength dynamic partition of each fiber-optic grating sensor;
B3) number with the fiber-optic grating sensor that disposes in the number of the reflection peak that is checked through and the said passage compares;
B4) if the number of said reflection peak is less than the number of the fiber-optic grating sensor that disposes in the said passage; Then seek the wavelength dynamic partition that lacks reflection peak, and give failure identification the pairing fiber-optic grating sensor of wavelength dynamic partition that lacks reflection peak that finds;
B5) if the number of said reflection peak greater than the number of sensors that disposes in the said passage, is then given fault value with all fiber-optic grating sensors in the said passage.
7. method according to claim 6 is characterized in that, if the number of said reflection peak is less than or more than the number of the fiber-optic grating sensor that disposes in the said passage, then send alerting signal.
8. method according to claim 6 is characterized in that, also comprises: according to the reflection peak wavelength of each fiber-optic grating sensor and the corresponding relation of temperature, calculate the temperature value of each fiber-optic grating sensor.
9. method according to claim 6; It is characterized in that; Said wavelength dynamic partition comprises with fiber-optic grating sensor centre wavelength being the range of wavelengths at center, in this range of wavelengths, dynamically marks off with the normal temperature zone, overtemperature is regional and the corresponding wavelength region may in fault zone.
10. method according to claim 6; It is characterized in that, be arranged in order each fiber-optic grating sensor in the said passage by spectrum medium wavelength size order, in the case; According to reflection peak, confirm the position of fiber-optic grating sensor in the said passage corresponding to each wavelength dynamic partition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279041.0A CN102401701B (en) | 2010-09-10 | 2010-09-10 | Method of improving temperature measurement stability of fiber Bragg grating sensor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010279041.0A CN102401701B (en) | 2010-09-10 | 2010-09-10 | Method of improving temperature measurement stability of fiber Bragg grating sensor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102401701A true CN102401701A (en) | 2012-04-04 |
| CN102401701B CN102401701B (en) | 2013-04-03 |
Family
ID=45884139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010279041.0A Expired - Fee Related CN102401701B (en) | 2010-09-10 | 2010-09-10 | Method of improving temperature measurement stability of fiber Bragg grating sensor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102401701B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234663A (en) * | 2013-05-17 | 2013-08-07 | 哈尔滨工业大学 | Method for calibrating optical fiber grating sensor by measuring practical pavement temperature |
| CN108303196A (en) * | 2017-12-29 | 2018-07-20 | 武汉理工光科股份有限公司 | Dissolve tune and regional temperature monitoring method and its system with optical fiber Grating Digital entirely |
| CN110988603A (en) * | 2019-12-25 | 2020-04-10 | 武汉三相电力科技有限公司 | Digital differential interval protection method and system based on fiber bragg grating |
| CN113669636A (en) * | 2021-07-09 | 2021-11-19 | 安徽复盛信息科技有限公司 | Pipeline leakage monitoring method based on fiber bragg grating temperature measurement technology |
| WO2021248994A1 (en) * | 2020-06-08 | 2021-12-16 | 深圳市康泓威科技有限公司 | Method for measuring and controlling solution temperature of electronic atomization device, and electronic atomization device |
| CN114441060A (en) * | 2020-07-22 | 2022-05-06 | 深圳阿珂法先进科技有限公司 | Self-diagnosis qualification detection method for optical fiber sensor temperature measurement system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144000A (en) * | 1994-03-08 | 1997-02-26 | 联合技术公司 | Embedded optical sensor capable of strain and temp. measurement using single diffraction grating |
| WO2002010677A1 (en) * | 2000-08-01 | 2002-02-07 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Optical sensing device containing fiber bragg gratings |
| US20050169348A1 (en) * | 2002-06-06 | 2005-08-04 | Wei Chen | Nanoparticle thermometry and pressure sensors |
| CN2807226Y (en) * | 2004-11-17 | 2006-08-16 | 中国科学院上海光学精密机械研究所 | Long period optical fiber grating temperature sensor |
| CN101063623A (en) * | 2006-04-25 | 2007-10-31 | 湖南大学 | Optical fibre thin film grating temperature sensor |
| CN201034747Y (en) * | 2007-04-20 | 2008-03-12 | 东华大学 | Fiber Bragg Grating High Temperature Sensing System with Long Period Fiber Bragg Grating Demodulation |
-
2010
- 2010-09-10 CN CN201010279041.0A patent/CN102401701B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144000A (en) * | 1994-03-08 | 1997-02-26 | 联合技术公司 | Embedded optical sensor capable of strain and temp. measurement using single diffraction grating |
| WO2002010677A1 (en) * | 2000-08-01 | 2002-02-07 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Optical sensing device containing fiber bragg gratings |
| US20050169348A1 (en) * | 2002-06-06 | 2005-08-04 | Wei Chen | Nanoparticle thermometry and pressure sensors |
| CN2807226Y (en) * | 2004-11-17 | 2006-08-16 | 中国科学院上海光学精密机械研究所 | Long period optical fiber grating temperature sensor |
| CN101063623A (en) * | 2006-04-25 | 2007-10-31 | 湖南大学 | Optical fibre thin film grating temperature sensor |
| CN201034747Y (en) * | 2007-04-20 | 2008-03-12 | 东华大学 | Fiber Bragg Grating High Temperature Sensing System with Long Period Fiber Bragg Grating Demodulation |
Non-Patent Citations (2)
| Title |
|---|
| 傅海威等,1: "一种新颖的温度压强同时区分测量的光纤Bragg光栅传感器", 《仪器仪表学报》 * |
| 张颖等,1: "一种新颖的基于预应变技术的光纤光栅应变温度传感器", 《中国激光》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234663A (en) * | 2013-05-17 | 2013-08-07 | 哈尔滨工业大学 | Method for calibrating optical fiber grating sensor by measuring practical pavement temperature |
| CN108303196A (en) * | 2017-12-29 | 2018-07-20 | 武汉理工光科股份有限公司 | Dissolve tune and regional temperature monitoring method and its system with optical fiber Grating Digital entirely |
| CN110988603A (en) * | 2019-12-25 | 2020-04-10 | 武汉三相电力科技有限公司 | Digital differential interval protection method and system based on fiber bragg grating |
| WO2021248994A1 (en) * | 2020-06-08 | 2021-12-16 | 深圳市康泓威科技有限公司 | Method for measuring and controlling solution temperature of electronic atomization device, and electronic atomization device |
| CN114441060A (en) * | 2020-07-22 | 2022-05-06 | 深圳阿珂法先进科技有限公司 | Self-diagnosis qualification detection method for optical fiber sensor temperature measurement system |
| CN113669636A (en) * | 2021-07-09 | 2021-11-19 | 安徽复盛信息科技有限公司 | Pipeline leakage monitoring method based on fiber bragg grating temperature measurement technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102401701B (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102401701B (en) | Method of improving temperature measurement stability of fiber Bragg grating sensor system | |
| CN112202493A (en) | Fault detection method, device and system for communication line | |
| CN101571983B (en) | Method for alarming and positioning fire disaster automatically in fiber gating tunnel | |
| EP2761263B1 (en) | Optical fibre grating sensor system and method | |
| CN101949986A (en) | System for online monitoring fiber grating composite insulator and using method thereof | |
| CN102650629A (en) | Fiber grating-based tunnel water seepage monitoring method and device | |
| CN108898778B (en) | Fire alarm system of vault oil storage tank based on distributed optical fiber temperature sensing technology | |
| CN103575412A (en) | Real-time monitoring and early warning terminal of temperature of electric transmission line | |
| CN104090252A (en) | Comprehensive detecting system and method for cable type fault indicator | |
| CN112629700A (en) | Pipe gallery cable leakage detection system and detection method | |
| CN111238573A (en) | An optical fiber type multi-parameter cable terminal detection system | |
| CN103267590A (en) | Locating temperature measuring device combining fiber gratings and distributed optical fibers | |
| CN110927524A (en) | OPGW optical cable core breaking reason analysis and accurate positioning method based on BOTDR technology | |
| CN106152980B (en) | Transformer winding deformation detection method and system | |
| CN202511922U (en) | Oppc optical cable stress and carrying capacity measuring and calculating system | |
| CN118505210A (en) | Solar photovoltaic installation monitoring system based on AI intelligent analysis | |
| CN201903411U (en) | Power equipment temperature online monitoring system based on fiber bragg grating temperature sensor | |
| CN201993558U (en) | FBG (Fiber Bragg Grating) wavelength demodulation device | |
| CN103498790B (en) | Based on group of pump state monitoring method and the device of optical fiber grating sensing | |
| CN106091945A (en) | The distributed sag on-line monitoring system of OPGW and method | |
| CN213213470U (en) | Fault detection system for communication line | |
| CN203177997U (en) | Positioning temperature-measurement device formed by combining fiber gratings and distributed fiber | |
| CN203587125U (en) | Positioning system of fiber grating | |
| CN106168510A (en) | Optical fibre pre-buried module, system and the total system of a kind of transformer temperature monitoring | |
| CN110631638A (en) | Electric power iron tower monitoring system based on optical fiber sensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method of improving temperature measurement stability of fiber Bragg grating sensor system Effective date of registration: 20131018 Granted publication date: 20130403 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing Raylens Technology Co.,Ltd. Registration number: 2013990000755 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160427 Granted publication date: 20130403 Pledgee: Haidian Beijing science and technology enterprise financing Company limited by guarantee Pledgor: Beijing Raylens Technology Co.,Ltd. Registration number: 2013990000755 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160725 Address after: 100192, 17 floor, No. 1 Zhongguancun Avenue, Beijing, Haidian District, F1 Patentee after: BEIJING HAORUI TECHNOLOGY Co.,Ltd. Address before: 100083, Beijing, Haidian District Jing Shu Road, 2, venture Plaza, room 101 Patentee before: Beijing Raylens Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20210910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |