CN112880713B - 一种布里渊光时域分析仪的光路保护装置 - Google Patents

一种布里渊光时域分析仪的光路保护装置 Download PDF

Info

Publication number
CN112880713B
CN112880713B CN202110064158.5A CN202110064158A CN112880713B CN 112880713 B CN112880713 B CN 112880713B CN 202110064158 A CN202110064158 A CN 202110064158A CN 112880713 B CN112880713 B CN 112880713B
Authority
CN
China
Prior art keywords
optical
optical switch
optical path
control module
switch
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
Application number
CN202110064158.5A
Other languages
English (en)
Other versions
CN112880713A (zh
Inventor
王升
黄毓华
吴伟文
王旭峰
李莹
张真毅
雷小月
梁志成
鲁晓一
李鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Zhuhai Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Zhuhai Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Zhuhai Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202110064158.5A priority Critical patent/CN112880713B/zh
Publication of CN112880713A publication Critical patent/CN112880713A/zh
Application granted granted Critical
Publication of CN112880713B publication Critical patent/CN112880713B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G01D5/35364—Sensor working in reflection using backscattering to detect the measured quantity using inelastic backscattering to detect the measured quantity, e.g. using Brillouin or Raman backscattering
    • 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
    • G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
    • G01D5/35374—Particular layout of the fiber
    • 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
    • G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
    • G01D5/35377—Means for amplifying or modifying the measured quantity
    • 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
    • G01D5/35383—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 multiple sensor devices using multiplexing techniques
    • G01D5/35387—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 multiple sensor devices using multiplexing techniques using wavelength division multiplexing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)

Abstract

本发明公开了一种布里渊光时域分析仪的光路保护装置，包括布里渊光时域分析仪本体，所述布里渊光时域分析仪本体包括脉冲光端和连续光端，还包括光路保护控制模块、第一光开关、第二光开关、波分复用器和解复用器，所述光路保护控制模块的输出端输出连续光，经波分复用器复用至光路中，解复用器将光路中的光解复用至光路保护控制模块的输入端，所述光路保护控制模块对光路进行监控。本发明将光路保护机制引入布里渊光时域分析仪，利用单片机、光开关、连续光源、波分复用器和光电转换电路构建光路保护模块，保护BOTDA测量光路安全。

Description

一种布里渊光时域分析仪的光路保护装置
技术领域
本发明涉及光纤传感领域，更具体地，涉及一种布里渊光时域分析仪的光路保护装置。
背景技术
基于布里渊散射效应的分布式光纤传感技术是目前国际上最为前沿的的测量技术之一，具有抗电磁干扰、本质防暴、防雷击、现场无需电源、体积小、重量轻、灵敏度高、损耗小、长距离和远程监测、长期在线监测的优点。基于受激布里渊散射的光时域分析仪，简称布里渊光时域分析仪(Brillouin Optical Time-Dmain Analysis,BOTDA)，在监测距离、响应时间等指标均为最优，从探测光纤的两端分别注入脉冲泵浦光和连续探测光，通过在脉冲泵浦光注入端检测受激布里渊散射信号方式来获取光纤沿线的温度以应变的分布信息，在智能电网长距离电力架空线路和海底电缆的温度及应变监控，森林、公路、铁路、隧道等的防火预警，建筑结构健康监控等，重要防护区域、通信或输油管线、交通线路以及重要国境线入侵预警、油气管线渗漏等领域都有重大应用。
现有布里渊光时域分析仪具有以下不足：
(1)探测光缆本身故障未有完全监测
由于探测光缆距离很长并且敷设环境较为复杂，受到外部因素影响较大，极易发生故障。同时光缆本身也会不断老化，引起光信号传输链路的衰减损耗的日益增大，进而导致BOTDA测试量程缩短。
(2)探测光路故障时光路未有自动切换保护
在探测光路发生故障时，需要人工将BOTDA的监测光路连接未发生故障的光路上，不能做到实时处理，带来很大的安全隐患。
公开日为2012年12月19日，中国专利CN102829807A公开了一种布里渊光时域分析仪(BOTDA)和偏振光时域反射计(POTDR)相结合的分布式光纤传感系统。本系统是在一套系统中结合了传统的BOTDA和POTDR，可以在检测长距离温度和应变的信息的同时实现长距离入侵的动态监测，从而构成具有入侵预警和安全监测双重功能的复合式光纤时域分析监测网，但是该方法依旧没有解决探测光缆本身故障导致的未能完全监测的缺陷。
发明内容
本发明提供一种布里渊光时域分析仪的光路保护装置，解决由于探测光缆本身故障导致的未能完全监测的缺陷。
为解决上述技术问题，本发明的技术方案如下：
一种布里渊光时域分析仪的光路保护装置，包括布里渊光时域分析仪本体，所述布里渊光时域分析仪本体包括脉冲光端和连续光端，还包括光路保护控制模块、第一光开关、第二光开关、波分复用器和解复用器，其中：
所述脉冲光端与所述第一光开关的输入端光纤连接，所述第一光开关的输出端与波分复用器的第一输入端光纤连接，所述波分复用器的第二输入端与光路保护控制模块的输出端光纤连接，所述波分复用器的输出端与解复用器的输入端光纤连接，解复用器的第一输出端与光路保护控制模块的输入端光纤连接，解复用器的第二输出端与第二光开关的输入端光纤连接，第二光开关的输出端与连续光端光纤连接，所述脉冲光端经第一光开关、波分复用器、解复用器和第二光开关形成光路；
所述光路保护控制模块的输出端输出连续光，经波分复用器复用至光路中，解复用器将光路中的光解复用至光路保护控制模块的输入端，所述光路保护控制模块对光路进行监控。
优选地，所述光路保护控制模块还分别与所述第一光开关、第二光开关连接，所述第一光开关、第二光开关的开关状态受光路保护控制模块控制。
优选地，所述光路保护控制模块包括单片机控制单元、光功率光电转换和放大模块、光源和光开关驱动电路，其中，所述单片机控制单元分别与光功率光电转换和放大模块的输出端、光源的输入端和光开关驱动电路的输入端连接，所述光源的输出端为所述光路保护控制模块的输出端、所述光功率光电转换和放大模块的输入端为所述光路保护控制模块的输入端，所述光开关驱动电路的输出端分别与所述第一光开关、第二光开关连接。
优选地，所述光源发射连续光。
优选地，所述波分复用器和解复用器通过光缆和光纤连接头连接，其中，波分复用器的输出端与光纤连接头的一端连接，光纤连接头的另一端与光缆的一端连接，光缆的另一端与解复用器的输入端连接。
优选地，还包括n-1个波分复用器和n-1个解复用器，所述第一光开关包括第一光开关公共端以及n个光开关可选输出端，第二光开关包括第二光开关公共端以及n个光开关可选输入端，其中第一光开关公共端的一端与脉冲光端连接，第一光开关公共端的另一端分别与n个光开关可选输出端连接，n个光开关可选输出端中的每一个均只与1个波分复用器的第一输入端连接，每个波分复用器的第二输入端均与光路保护控制模块的输出端连接，每个波分复用器的输出端均只与1个解复用器的输入端连接，每个解复用器的第一输出端与光路保护控制模块的输入端连接，每个解复用器的第二输出端均与第二光开关的输入端连接。
优选地，所述布里渊光时域分析仪本体包括激光器，所述激光器的工作波长为1550nm。
优选地，所述光源的工作波长为1310nm。
优选地，所述单片机控制单元为NXPK60单片机。
优选地，所述n为4。
与现有技术相比，本发明技术方案的有益效果是：
本发明将光路保护机制引入布里渊光时域分析仪，利用单片机、光开关、连续光源、波分复用器和光电转换电路构建光路保护模块，保护BOTDA测量光路安全。
附图说明
图1为布里渊光时域分析仪的光路保护装置的结构示意图。
图中，1为布里渊光时域分析仪，2为脉冲光端，7为连续光端，4为光路保护控制模块，41为单片机控制单元，42为光源，43为光功率光电转换和放大模块，44为光开关驱动电路，5为第一光开关，S10为第一光开关公共端，S11-S14为光开关可选输出端，6为第二光开关，S20为第二光开关公共端，S21-S24为光开关可选输入端，11-14为波分复用器，15至18为解复用器，21-28为光缆连接头，3为光缆，31-38为光缆中不同的光纤，40-43为光纤熔接点。
具体实施方式
附图仅用于示例性说明，不能理解为对本专利的限制；
为了更好说明本实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；
对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。
下面结合附图和实施例对本发明的技术方案做进一步的说明。
实施例1
本实施例提供一种布里渊光时域分析仪的光路保护装置，包括布里渊光时域分析仪本体，所述布里渊光时域分析仪本体包括脉冲光端和连续光端，如图1，还包括光路保护控制模块、第一光开关、第二光开关、波分复用器和解复用器，其中：
所述脉冲光端与所述第一光开关的输入端光纤连接，所述第一光开关的输出端与波分复用器的第一输入端光纤连接，所述波分复用器的第二输入端与光路保护控制模块的输出端光纤连接，所述波分复用器的输出端与解复用器的输入端光纤连接，解复用器的第一输出端与光路保护控制模块的输入端光纤连接，解复用器的第二输出端与第二光开关的输入端光纤连接，第二光开关的输出端与连续光端光纤连接，所述脉冲光端经第一光开关、波分复用器、解复用器和第二光开关形成光路；
所述光路保护控制模块的输出端输出连续光，经波分复用器复用至光路中，解复用器将光路中的光解复用至光路保护控制模块的输入端，所述光路保护控制模块对光路进行监控。
所述光路保护控制模块还分别与所述第一光开关、第二光开关连接，所述第一光开关、第二光开关的开关状态受光路保护控制模块控制。
所述光路保护控制模块包括单片机控制单元、光功率光电转换和放大模块、光源和光开关驱动电路，其中，所述单片机控制单元分别与光功率光电转换和放大模块的输出端、光源的输入端和光开关驱动电路的输入端连接，所述光源的输出端为所述光路保护控制模块的输出端、所述光功率光电转换和放大模块的输入端为所述光路保护控制模块的输入端，所述光开关驱动电路的输出端分别与所述第一光开关、第二光开关连接。
所述光源发射连续光。
所述波分复用器和解复用器通过光缆和光纤连接头连接，其中，波分复用器的输出端与光纤连接头的一端连接，光纤连接头的另一端与光缆的一端连接，光缆的另一端与解复用器的输入端连接。
还包括n-1个波分复用器和n-1个解复用器，所述第一光开关包括第一光开关公共端以及n个光开关可选输出端，第二光开关包括第二光开关公共端以及n个光开关可选输入端，其中第一光开关公共端的一端与脉冲光端连接，第一光开关公共端的另一端分别与n个光开关可选输出端连接，n个光开关可选输出端中的每一个均只与1个波分复用器的第一输入端连接，每个波分复用器的第二输入端均与光路保护控制模块的输出端连接，每个波分复用器的输出端均只与1个解复用器的输入端连接，每个解复用器的第一输出端与光路保护控制模块的输入端连接，每个解复用器的第二输出端均与第二光开关的输入端连接。
所述布里渊光时域分析仪本体包括激光器，所述激光器的工作波长为1550nm。
所述光源的工作波长为1310nm。
所述单片机控制单元为NXPK60单片机。
所述n为4。
在具体实施过程中，以波分复用器11所在的光路为例，从光开关可选输出端S11进出的都是波长1550nm的激光，光源42工作波长是1310nm，因此，正向传播时波分复用器11将光开关可选输出端S11的1550nm激光和光源42的1310nm激光耦合到光缆连接头21上，反向传播由光缆连接头21的1550nm和1310nm混合激光经过波分复用器11解波分复用，1550nm回到脉冲光端；
对外连接光缆3，光缆中的光纤都是单模光纤，选取其中的4芯光纤31～34分别通过光纤连接头21～24连接波分复用器11～14，选取其中的4芯光纤35～38分别通过光纤连接头25～28连接解复用器15～18，分别对光纤31～38的尾端进行熔接，例如光纤31和光纤38的尾端在熔接点40处熔接，这样构成BOTDA测试环路光纤31+光纤38，同样可以得到其他三条环路光纤32+光纤37,光纤33+光纤36,光纤34+光纤35。光路保护控制模块4可以控制第一光开关5和第二光开关6实现4条光路的选择。
光功率监测由光源42的4个连续光源一直连续发射工作波长1310nm的连续光，光信号通过波分复用器进入各自的环路，再由解复用器解波分复用将1310nm连续光送入4通道的光功率光电转换和放大模块43进行光电转换，再由单片机控制单元41中的ADC进行采集，再经单片机运算处理。
将光路保护机制引入布里渊光时域分析仪，利用单片机、光开关、连续光源、波分复用器和光电转换电路构建光路保护模块，保护BOTDA测量光路安全，具有以下优点：
(1)光路故障监测采用连续光源+光功率监测的方案，每1路光路独立配置光源和光功率转换电路，利用单片机的ADC轮询测试，每1路测试时间可控制在1ms以内，与OTDR光路监测方案比较，测量时间上有明显优势。
(2)监测BOTDA在用的测量光路异常，驱动光开关切换BOTDA测量光路，从光路发生故障——光路保护模块监测到故障——光路保护模块切换光路——光路恢复整个过程用时较少，响应速度较快。
相同或相似的标号对应相同或相似的部件；
附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制；
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (2)

1.一种布里渊光时域分析仪的光路保护装置，包括布里渊光时域分析仪本体，所述布里渊光时域分析仪本体包括脉冲光端和连续光端，其特征在于，所述光路保护装置还包括光路保护控制模块、第一光开关、第二光开关、波分复用器和解复用器，其中：
所述脉冲光端与所述第一光开关的输入端光纤连接，所述第一光开关的输出端与波分复用器的第一输入端光纤连接，所述波分复用器的第二输入端与光路保护控制模块的输出端光纤连接，所述波分复用器的输出端与解复用器的输入端光纤连接，解复用器的第一输出端与光路保护控制模块的输入端光纤连接，解复用器的第二输出端与第二光开关的输入端光纤连接，第二光开关的输出端与连续光端光纤连接，所述脉冲光端经第一光开关、波分复用器、解复用器和第二光开关形成光路；
所述光路保护控制模块的输出端输出连续光，经波分复用器复用至光路中，解复用器将光路中的光解复用至光路保护控制模块的输入端，所述光路保护控制模块对光路进行监控；
所述光路保护控制模块还分别与所述第一光开关、第二光开关连接，所述第一光开关、第二光开关的开关状态受光路保护控制模块控制；
所述光路保护控制模块包括单片机控制单元、光功率光电转换和放大模块、光源和光开关驱动电路，其中，所述单片机控制单元分别与光功率光电转换和放大模块的输出端、光源的输入端和光开关驱动电路的输入端连接，所述光源的输出端为所述光路保护控制模块的输出端、所述光功率光电转换和放大模块的输入端为所述光路保护控制模块的输入端，所述光开关驱动电路的输出端分别与所述第一光开关、第二光开关连接；
所述光源发射连续光；
所述波分复用器和解复用器通过光缆和光纤连接头连接，其中，波分复用器的输出端与光纤连接头的一端连接，光纤连接头的另一端与光缆的一端连接，光缆的另一端与解复用器的输入端连接；
还包括n-1个波分复用器和n-1个解复用器，所述第一光开关包括第一光开关公共端以及n个光开关可选输出端，第二光开关包括第二光开关公共端以及n个光开关可选输入端，其中第一光开关公共端的一端与脉冲光端连接，第一光开关公共端的另一端分别与n个光开关可选输出端连接，n个光开关可选输出端中的每一个均只与1个波分复用器的第一输入端连接，每个波分复用器的第二输入端均与光路保护控制模块的输出端连接，每个波分复用器的输出端均只与1个解复用器的输入端连接，每个解复用器的第一输出端与光路保护控制模块的输入端连接，每个解复用器的第二输出端均与第二光开关的输入端连接；
所述布里渊光时域分析仪本体包括激光器，所述激光器的工作波长为1550nm；
所述光源的工作波长为1310nm；
所述n为4。
2.根据权利要求1所述的布里渊光时域分析仪的光路保护装置，其特征在于，所述单片机控制单元为NXPK60单片机。
CN202110064158.5A 2021-01-18 2021-01-18 一种布里渊光时域分析仪的光路保护装置 Active CN112880713B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110064158.5A CN112880713B (zh) 2021-01-18 2021-01-18 一种布里渊光时域分析仪的光路保护装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110064158.5A CN112880713B (zh) 2021-01-18 2021-01-18 一种布里渊光时域分析仪的光路保护装置

Publications (2)

Publication Number Publication Date
CN112880713A CN112880713A (zh) 2021-06-01
CN112880713B true CN112880713B (zh) 2023-10-20

Family

ID=76049116

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110064158.5A Active CN112880713B (zh) 2021-01-18 2021-01-18 一种布里渊光时域分析仪的光路保护装置

Country Status (1)

Country Link
CN (1) CN112880713B (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735272A (zh) * 2012-06-08 2012-10-17 宁波诺驰光电科技发展有限公司 一种可寻障布里渊光时域分析仪
CN102853857A (zh) * 2012-09-13 2013-01-02 宁波诺驰光电科技发展有限公司 一种长距离光纤布里渊光时域分析器
WO2017035850A1 (zh) * 2015-08-28 2017-03-09 东南大学 一种光纤传感网络一体化同步共线解调系统及传感系统
CN107528630A (zh) * 2017-10-20 2017-12-29 东北电力大学 带保护光路且故障可自愈的双模式光纤监测系统及方法
CN209570191U (zh) * 2018-12-13 2019-11-01 浙江中欣动力测控技术有限公司 一种光路自动寻路布里渊光时域分析仪
CN211147700U (zh) * 2020-01-02 2020-07-31 杭州光传科技有限公司 一种多通道同时测量的布里渊光时域分析仪

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4730145B2 (ja) * 2006-03-08 2011-07-20 株式会社日立製作所 光信号切替え装置および光信号切替え方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735272A (zh) * 2012-06-08 2012-10-17 宁波诺驰光电科技发展有限公司 一种可寻障布里渊光时域分析仪
CN102853857A (zh) * 2012-09-13 2013-01-02 宁波诺驰光电科技发展有限公司 一种长距离光纤布里渊光时域分析器
WO2017035850A1 (zh) * 2015-08-28 2017-03-09 东南大学 一种光纤传感网络一体化同步共线解调系统及传感系统
CN107528630A (zh) * 2017-10-20 2017-12-29 东北电力大学 带保护光路且故障可自愈的双模式光纤监测系统及方法
CN209570191U (zh) * 2018-12-13 2019-11-01 浙江中欣动力测控技术有限公司 一种光路自动寻路布里渊光时域分析仪
CN211147700U (zh) * 2020-01-02 2020-07-31 杭州光传科技有限公司 一种多通道同时测量的布里渊光时域分析仪

Also Published As

Publication number Publication date
CN112880713A (zh) 2021-06-01

Similar Documents

Publication Publication Date Title
CN1020229C (zh) 光纤链路测试网络
CN102829807B (zh) Botda和potdr相结合的分布式光纤传感系统
CN101858488A (zh) 油气管道泄漏监测方法及监测系统
CN103134432A (zh) 一种基于光纤传感的桥梁位移监测系统
CN103532616A (zh) 一体化光缆故障检测装置
CN203163769U (zh) 一种基于分布式光纤传感器的架空线路安全监测系统
CN103323215A (zh) 一种光时域反射测量装置及方法
CN110926509A (zh) 用于海缆同步测温测振动的在线监测系统
CN204087417U (zh) 光纤感温火灾探测器系统
CN210780795U (zh) 一种电力光缆网的分布式光纤多参量测量配光控制装置
CN104796191B (zh) 一种传输装置
CN105116285B (zh) 一种电力隧道电缆运行监测系统
CN105741475B (zh) 冗余分布式光纤线型感温火灾探测方法及系统
CN112880713B (zh) 一种布里渊光时域分析仪的光路保护装置
CN107990998B (zh) 一种多通道分布式光纤测温装置及方法
CN109540184A (zh) 一种海缆分布式监测光路的自动倒换系统及其使用方法
CN204392253U (zh) 一种双opgw光缆故障并行监测系统
CN106323345A (zh) 一种超长距离分布式光纤传感模拟测试系统及方法
CN201118599Y (zh) 一种光模块设备及主机板
CN106289390A (zh) 一种大长度海底电缆生产监测方法
CN105116286B (zh) 一种全光纤电力隧道电缆状态实时监测系统
CN109540183A (zh) 一种光路自动寻路布里渊光时域分析仪及其使用方法
CN108548600B (zh) 基于时分复用的偏振态光纤振动传感系统
CN213956425U (zh) 一种高速光纤光栅传感器的解调系统
CN100397034C (zh) 锚索长期工作状态监测装置及其方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant