CN106092305B - 分布式光纤传感系统及其振动检测定位方法 - Google Patents
分布式光纤传感系统及其振动检测定位方法 Download PDFInfo
- Publication number
- CN106092305B CN106092305B CN201610719172.3A CN201610719172A CN106092305B CN 106092305 B CN106092305 B CN 106092305B CN 201610719172 A CN201610719172 A CN 201610719172A CN 106092305 B CN106092305 B CN 106092305B
- Authority
- CN
- China
- Prior art keywords
- frequency
- module
- vibration
- curve
- optical
- 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.)
- Active
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 60
- 238000002310 reflectometry Methods 0.000 claims abstract description 53
- 238000005562 fading Methods 0.000 claims abstract description 29
- 230000035559 beat frequency Effects 0.000 claims abstract description 24
- 230000010287 polarization Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 4
- 230000008030 elimination Effects 0.000 claims abstract description 3
- 238000003379 elimination reaction Methods 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 33
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000021615 conjugation Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
- G01D5/35354—Sensor working in reflection
- G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Optical Transform (AREA)
Abstract
Description
Claims (9)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610719172.3A CN106092305B (zh) | 2016-08-25 | 2016-08-25 | 分布式光纤传感系统及其振动检测定位方法 |
PCT/CN2016/096807 WO2018035833A1 (zh) | 2016-08-25 | 2016-08-26 | 分布式光纤传感系统及其振动检测定位方法 |
EP16913855.9A EP3483572B1 (en) | 2016-08-25 | 2016-08-26 | Distributed fibre sensing system and vibration detection and positioning method therefor |
JP2019506366A JP6695001B2 (ja) | 2016-08-25 | 2016-08-26 | 分散型光ファイバセンシングシステム及びその振動検知位置決め方法 |
US16/322,259 US10989587B2 (en) | 2016-08-25 | 2016-08-26 | Distributed fibre sensing system and vibration detection and positioning method therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610719172.3A CN106092305B (zh) | 2016-08-25 | 2016-08-25 | 分布式光纤传感系统及其振动检测定位方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106092305A CN106092305A (zh) | 2016-11-09 |
CN106092305B true CN106092305B (zh) | 2022-02-18 |
Family
ID=57224977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610719172.3A Active CN106092305B (zh) | 2016-08-25 | 2016-08-25 | 分布式光纤传感系统及其振动检测定位方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10989587B2 (zh) |
EP (1) | EP3483572B1 (zh) |
JP (1) | JP6695001B2 (zh) |
CN (1) | CN106092305B (zh) |
WO (1) | WO2018035833A1 (zh) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107990970B (zh) * | 2017-11-03 | 2019-10-15 | 上海交通大学 | 消除分布式光纤声波系统中衰落噪声的方法 |
CN108415067B (zh) * | 2017-12-28 | 2020-02-14 | 华中科技大学 | 一种基于微结构光纤分布式声波传感的地震波测量系统 |
US10816368B2 (en) * | 2018-01-24 | 2020-10-27 | Prisma Photonics Ltd. | Method and system for high sensitivity in distributed fiber sensing applications |
CN110118594B (zh) * | 2019-04-22 | 2020-07-10 | 华中科技大学 | 一种基于偏振分极接收的光学相位解调方法和系统 |
US10979140B2 (en) * | 2019-07-09 | 2021-04-13 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting operational conditions of an optical link in an optical network |
CN110285333A (zh) * | 2019-07-12 | 2019-09-27 | 上海交通大学 | 基于光纤的油气管道泄漏监测系统 |
CN111157102B (zh) * | 2020-01-02 | 2022-03-08 | 河海大学常州校区 | 一种分布式光纤传感系统中消除频率干扰的定位方法 |
JP7435160B2 (ja) * | 2020-03-30 | 2024-02-21 | 沖電気工業株式会社 | 光ファイバ振動検知装置及び振動検知方法 |
CN111609919B (zh) * | 2020-06-09 | 2021-06-01 | 重庆大学 | 光纤分布式振动和损耗同时检测系统 |
CL2020001869A1 (es) * | 2020-07-14 | 2020-09-11 | Mario Francisco Rendic Munoz | Sistema de monitoreo continuo de condición (mcc) para correas transportadoras basado en un sensor distribuido de fibra óptica |
CN112129243B (zh) * | 2020-09-04 | 2022-02-15 | 电子科技大学 | 基于光电振荡器的准分布式光纤扭转角度测量装置和方法 |
CN112067113B (zh) * | 2020-09-08 | 2022-03-25 | 武汉理工光科股份有限公司 | 一种瑞利波在土壤中传播速度的确定方法及装置 |
CN112097813B (zh) * | 2020-09-14 | 2022-05-17 | 中国人民解放军国防科技大学 | 一种基于光频调制的3×3耦合器光电检测方法与装置 |
CN112082498A (zh) * | 2020-09-14 | 2020-12-15 | 安徽大学 | 基于相位测量法ofdr应变和温度的抑噪传感方法 |
CN112504629B (zh) * | 2020-11-24 | 2021-08-24 | 北京大学 | 一种光散射参量测量系统及其测量方法 |
CN112697181B (zh) * | 2020-12-02 | 2022-07-26 | 广东工业大学 | 一种基于频率调制的相位敏感光时域反射装置及方法 |
US11733089B2 (en) * | 2020-12-22 | 2023-08-22 | Nec Corporation | Context encoder-based fiber sensing anomaly detection |
CN112611444B (zh) * | 2020-12-30 | 2023-04-28 | 西安和其光电科技股份有限公司 | 一种可精确定位的分布式光纤振动监测系统及方法 |
CN112747815B (zh) * | 2021-01-06 | 2024-02-02 | 苏州光格科技股份有限公司 | 一种分布式光纤声波传感系统中的相干衰落噪声抑制方法 |
KR102392287B1 (ko) * | 2021-05-04 | 2022-05-02 | 에피텍(주) | 지중 광케이블을 이용하여 진동원의 위치를 추정하기 위한 시스템 및 그 응용 방법 |
CN113432702B (zh) * | 2021-05-25 | 2023-01-31 | 天津大学 | 一种基于光学外差的海洋跨空泡层声信号探测系统及方法 |
CN113639848B (zh) * | 2021-08-10 | 2022-10-21 | 福州大学 | 具有多点同步测振的高性能扫频光学相干测振仪及方法 |
CN113483880A (zh) * | 2021-08-17 | 2021-10-08 | 广东电网有限责任公司 | 基于少模光纤的振动传感系统 |
CN113984182B (zh) * | 2021-11-04 | 2024-07-09 | 国家石油天然气管网集团有限公司 | 一种油气管线分布式横向振源距离定位方法 |
CN114235135B (zh) * | 2021-12-22 | 2023-05-26 | 桂林电子科技大学 | 一种基于双差分步长的幅值解调振动定位检测方法 |
CN116350174A (zh) * | 2021-12-27 | 2023-06-30 | 华为技术有限公司 | 一种脑机接口装置和信息获取方法 |
CN114482988B (zh) * | 2021-12-28 | 2024-05-31 | 中煤科工集团西安研究院有限公司 | 采用分布式声学传感设备的含水层出水段定位系统及方法 |
CN116772908A (zh) * | 2021-12-28 | 2023-09-19 | 西安和其光电科技股份有限公司 | 一种应用于分布式光纤声波传感系统的信号数据处理方法 |
CN114485900B (zh) * | 2021-12-31 | 2023-10-03 | 武汉光谷互连科技有限公司 | 直接探测分布式声波传感系统的无衰落解调方法 |
CN114838240A (zh) * | 2022-04-26 | 2022-08-02 | 天津市誉航润铭科技发展有限公司 | 一种管道内检测器运行监测系统及检测定位方法 |
CN114993448B (zh) * | 2022-06-09 | 2023-04-07 | 西北大学 | 一种长距离分布式振动监测装置及监测方法 |
CN116155373B (zh) * | 2022-11-14 | 2024-06-18 | 中铁第四勘察设计院集团有限公司 | 一种单纤双向融合定位型铁路光缆监测系统与方法 |
CN116186642B (zh) * | 2023-04-27 | 2023-09-08 | 山东汇英光电科技有限公司 | 一种基于多维特征融合的分布式光纤传感事件预警方法 |
CN117350226A (zh) * | 2023-09-26 | 2024-01-05 | 菏泽嘉诺网络科技有限公司 | 一种igbt器件的状态参数采集方法 |
CN117708506B (zh) * | 2024-02-05 | 2024-04-26 | 山东省科学院激光研究所 | 分布式声波传感相干衰落引起的恶化效应消除方法及系统 |
CN118013401B (zh) * | 2024-04-10 | 2024-07-26 | 宁波联河光子技术有限公司 | 一种基于das的带式输送机振动误报抑制方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136113A (en) * | 1983-03-05 | 1984-09-12 | Plessey Co Plc | Improvements Relating to Optical Sensing Systems |
CN103759750A (zh) * | 2014-01-23 | 2014-04-30 | 中国科学院半导体研究所 | 基于相位生成载波技术的分布式光纤传感系统 |
CN104677396A (zh) * | 2015-03-19 | 2015-06-03 | 广西师范大学 | 动态分布式布里渊光纤传感装置及方法 |
CN104990620A (zh) * | 2015-07-03 | 2015-10-21 | 南京大学 | 基于布拉格光纤光栅阵列的相敏光时域反射装置及方法 |
CN105067103A (zh) * | 2015-08-31 | 2015-11-18 | 上海交通大学 | 基于光频域反射计的振动检测装置及其方法 |
WO2016021689A1 (ja) * | 2014-08-07 | 2016-02-11 | 古河電気工業株式会社 | 光ファイバセンサ、地震探査方法、石油、天然ガス貯留層分布の計測方法、歪み検知方法および地層の割れ目位置特定方法 |
CN105466548A (zh) * | 2015-12-16 | 2016-04-06 | 上海大学 | 相位敏感光时域反射光纤传感系统定位方法 |
CN105490738A (zh) * | 2016-01-05 | 2016-04-13 | 上海交通大学 | 基于频率合成的光频域反射方法及系统 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61105438A (ja) * | 1984-10-29 | 1986-05-23 | Nippon Denso Co Ltd | 振動試験装置 |
DE69019289T2 (de) * | 1989-10-27 | 1996-02-01 | Storz Instr Co | Verfahren zum Antreiben eines Ultraschallwandlers. |
US8004686B2 (en) * | 2004-12-14 | 2011-08-23 | Luna Innovations Inc. | Compensating for time varying phase changes in interferometric measurements |
CA2640462C (en) * | 2008-10-03 | 2016-06-28 | Zetec, Inc. | System and method for ultrasonic testing |
WO2012030814A2 (en) * | 2010-09-01 | 2012-03-08 | Schlumberger Canada Limited | Distributed fiber optic sensor system with improved linearity |
CN102322880B (zh) | 2011-08-18 | 2013-06-05 | 天津大学 | 偏振敏感的分布式光频域反射扰动传感装置和解调方法 |
CN102628698B (zh) * | 2012-04-06 | 2015-02-18 | 中国科学院上海光学精密机械研究所 | 分布式光纤传感器及信息解调方法 |
JP6240585B2 (ja) * | 2014-10-27 | 2017-11-29 | 日本電信電話株式会社 | 光ファイバ振動センサおよび振動測定方法 |
US9500562B2 (en) * | 2015-02-05 | 2016-11-22 | University Of Ottawa | Kerr phase-interrogator for sensing and signal processing applications |
CN104700624B (zh) * | 2015-03-16 | 2017-07-07 | 电子科技大学 | 基于相敏光时域反射仪的车流量在线监测系统的监测方法 |
CN105403257A (zh) * | 2015-12-24 | 2016-03-16 | 四川师范大学 | 一种分布式布里渊光时域分析系统 |
-
2016
- 2016-08-25 CN CN201610719172.3A patent/CN106092305B/zh active Active
- 2016-08-26 US US16/322,259 patent/US10989587B2/en active Active
- 2016-08-26 JP JP2019506366A patent/JP6695001B2/ja active Active
- 2016-08-26 WO PCT/CN2016/096807 patent/WO2018035833A1/zh unknown
- 2016-08-26 EP EP16913855.9A patent/EP3483572B1/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136113A (en) * | 1983-03-05 | 1984-09-12 | Plessey Co Plc | Improvements Relating to Optical Sensing Systems |
CN103759750A (zh) * | 2014-01-23 | 2014-04-30 | 中国科学院半导体研究所 | 基于相位生成载波技术的分布式光纤传感系统 |
WO2016021689A1 (ja) * | 2014-08-07 | 2016-02-11 | 古河電気工業株式会社 | 光ファイバセンサ、地震探査方法、石油、天然ガス貯留層分布の計測方法、歪み検知方法および地層の割れ目位置特定方法 |
CN104677396A (zh) * | 2015-03-19 | 2015-06-03 | 广西师范大学 | 动态分布式布里渊光纤传感装置及方法 |
CN104990620A (zh) * | 2015-07-03 | 2015-10-21 | 南京大学 | 基于布拉格光纤光栅阵列的相敏光时域反射装置及方法 |
CN105067103A (zh) * | 2015-08-31 | 2015-11-18 | 上海交通大学 | 基于光频域反射计的振动检测装置及其方法 |
CN105466548A (zh) * | 2015-12-16 | 2016-04-06 | 上海大学 | 相位敏感光时域反射光纤传感系统定位方法 |
CN105490738A (zh) * | 2016-01-05 | 2016-04-13 | 上海交通大学 | 基于频率合成的光频域反射方法及系统 |
Non-Patent Citations (2)
Title |
---|
Long-Range Distributed Vibration Sensing Based on Phase Extraction From Phase-Sensitive OTDR;GuangYao Yang etc.;《IEEE PHOTONICS JOURNAL》;20160630;第8卷(第3期);全文 * |
用脉冲激光全息法分析冲床侧向振动特性;沈国勇 等;《重型机械》;19910501(第4期);第48-52页 * |
Also Published As
Publication number | Publication date |
---|---|
WO2018035833A1 (zh) | 2018-03-01 |
US20200182685A1 (en) | 2020-06-11 |
EP3483572A4 (en) | 2020-03-18 |
JP6695001B2 (ja) | 2020-05-20 |
US10989587B2 (en) | 2021-04-27 |
EP3483572B1 (en) | 2021-06-23 |
EP3483572A1 (en) | 2019-05-15 |
CN106092305A (zh) | 2016-11-09 |
JP2019525181A (ja) | 2019-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106092305B (zh) | 分布式光纤传感系统及其振动检测定位方法 | |
CN106052842B (zh) | 可消衰落噪声的分布式光纤振动传感系统及其解调方法 | |
JP6698164B2 (ja) | 周波数合成に基づいた光周波数領域反射方法及びシステム | |
CN107505041B (zh) | 一种基于相位敏感光时域反射计的相位解调装置和方法 | |
CN106940444B (zh) | 基于微波差分增益的相干多普勒测风激光雷达 | |
JP6552983B2 (ja) | ブリルアン散乱測定方法およびブリルアン散乱測定装置 | |
CN110375841B (zh) | 基于分布式光纤声波传感系统的振动传感方法 | |
CN112697181B (zh) | 一种基于频率调制的相位敏感光时域反射装置及方法 | |
CN108827447B (zh) | 一种异频双脉冲cotdr传感装置和方法 | |
CN110470327A (zh) | 一种光时域分析仪和分析方法 | |
CN108303626B (zh) | 基于分布式光纤传感阵列的局部放电超声测量系统与方法 | |
CN109412687B (zh) | 一种基于频域驻波法的光路时延快速测量装置 | |
CN112697257B (zh) | 无衰落多波长分布式声波传感系统和差分旋转矢量叠加法 | |
CN111912516A (zh) | 一种相位同步的光纤分布式振动测量装置、驱动器及方法 | |
CN113340571B (zh) | 基于光矢量分析的光时延测量方法及装置 | |
CN111637910B (zh) | 时域差分高速混沌布里渊光相干域监测装置及方法 | |
CN116930995B (zh) | 调频连续波激光高速目标的速度和距离测量系统及方法 | |
US10215845B2 (en) | Simultaneous ranging and remote chemical sensing utilizing optical dispersion or absorption spectroscopy | |
US11867540B2 (en) | Brillouin optical time domain reflectometer with ultra-high spatial resolution based on bipolar differential phase encoding | |
CN113607277B (zh) | 一种窄线宽激光器线宽测量系统的解调方法 | |
CN102841355A (zh) | 基于微波光子学的飞秒测距激光雷达数据测量装置及方法 | |
CN115112219A (zh) | 一种长距离光纤分布式振动传感装置及工作方法 | |
CN212363486U (zh) | 一种测温系统 | |
CN210464657U (zh) | 基于分布式光纤声波传感系统的振动传感系统 | |
CN110044401B (zh) | 一种光纤传感器的信号解调方法及系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20221128 Address after: 315500 No. 1, building 6, Qianren entrepreneurship Park, economic development zone, No. 98, Huiming Road, Fenghua District, Ningbo City, Zhejiang Province (self declaration) Patentee after: Ningbo Lianhe Photonics Technology Co.,Ltd. Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI JIAO TONG University |
|
TR01 | Transfer of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Distributed Fiber Optic Sensing System and Its Vibration Detection and Location Method Effective date of registration: 20230612 Granted publication date: 20220218 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Ningbo Fenghua sub branch Pledgor: Ningbo Lianhe Photonics Technology Co.,Ltd. Registration number: Y2023980043565 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |