公开(公告)号：US5262639A

公开(公告)日：1993-11-16

申请号：US868658

申请日：1992-04-15

申请人： David E. Vokey ,  Kenneth N. Sontag ,  Heinrich Kraft

发明人： David E. Vokey ,  Kenneth N. Sontag ,  Heinrich Kraft

IPC分类号： G01M3/04 ,  G01M11/00 ,  G08B13/186 ,  G08C23/06 ,  H01J5/16 ,  G08B21/00

CPC分类号： G01M11/33 ,  G01M3/047 ,  G08B13/186 ,  G08C23/06

摘要： The invention provides a monitor for monitoring the condition of fibre optic communication cables. The system employs one or more of the optical fibres of a cable to monitor the cable structure for damage or kinks. By using two separate laser sources and simultaneously monitoring the optical losses at two distinct and separate wavelengths, the loss signature of the monitored fibre is determined, analyzed and related to the mechanical condition of the cable structure. To monitor splice points for moisture, a special optical splice sensor unit detects any penetration of water into the splice and transmits a coded alarm signal over the monitored fibre to the optical receiver. Every splice location is assigned a unique sensor code. The optical splice sensor is driven by moisture detection cell, which forms a single cell water activated battery. Water entering the monitored splice closure wets the tape, which activates the cell. The cell generates sufficient voltage and current to power timing, code generation and modulator circuits in the sensor unit for an extended period of time. The activated circuit drives a modulator which modulates the light travelling down the fibre. The modulated light is monitored at the equipment office and the address of the alarming sensor decoded.

摘要翻译： 本发明提供了一种用于监视光纤通信电缆的状况的监视器。 该系统采用电缆的一根或多根光纤来监测电缆结构是否损坏或扭结。 通过使用两个单独的激光源并同时监测在两个不同和分离的波长处的光学损耗，所监测的光纤的损耗特征被确定，分析并且与电缆结构的机械状态相关。 为了监测接合点的湿度，特殊的光接头传感器单元检测水进入接头的任何穿透，并将经过监视的光纤的编码报警信号传输到光接收机。 每个拼接位置都被分配一个唯一的传感器代码。 光接头传感器由水分检测电池驱动，形成单电池水活化电池。 进入受监视的接头闭合的水浸湿磁带，激活电池。 电池产生足够的电压和电流，以长时间为传感器单元中的定时，代码生成和调制器电路供电。 激活的电路驱动调制器，其调制沿着光纤行进的光。 调制光在设备办公室进行监控，报警传感器的地址被解码。

公开(公告)号：US5349182A

公开(公告)日：1994-09-20

申请号：US152368

申请日：1993-11-16

申请人： David E. Vokey ,  Kenneth N. Sontag ,  Heinrich Kraft

发明人： David E. Vokey ,  Kenneth N. Sontag ,  Heinrich Kraft

IPC分类号： G01M3/04 ,  G01M11/00 ,  G08B13/186 ,  G08C23/06 ,  G01V9/04

CPC分类号： G01M11/33 ,  G01M3/047 ,  G08B13/186 ,  G08C23/06

摘要： The invention provides a monitor for monitoring the condition of fibre optic communication cables. The system employs one or more of the optical fibres of a cable to monitor the cable structure for damage or kinks. By using two separate laser sources and simultaneously monitoring the optical losses at two distinct and separate wavelengths, the loss signature of the monitored fibre is determined, analyzed and related to the mechanical condition of the cable structure. To monitor splice points for moisture, a special optical splice sensor unit detects any penetration of water into the splice and transmits a coded alarm signal over the monitored fibre to the optical receiver. Every splice location is assigned a unique sensor code. The optical splice sensor is driven by moisture detection cell, which forms a single cell water activated battery. Water entering the monitored splice closure wets the tape, which activates the cell. The cell generates sufficient voltage and current to power timing, code generation and modulator circuits in the sensor unit for an extended period of time. The activated circuit drives a modulator which modulates the light travelling down the fibre. The modulated light is monitored at the equipment office and the address of the alarming sensor decoded.

摘要翻译： 本发明提供了一种用于监视光纤通信电缆的状况的监视器。 该系统采用电缆的一根或多根光纤来监测电缆结构是否损坏或扭结。 通过使用两个单独的激光源并同时监测在两个不同和分离的波长处的光学损耗，所监测的光纤的损耗特征被确定，分析并且与电缆结构的机械状态相关。 为了监测接合点的湿度，特殊的光接头传感器单元检测水进入接头的任何穿透，并将经过监视的光纤的编码报警信号传输到光接收机。 每个拼接位置都被分配一个唯一的传感器代码。 光接头传感器由水分检测电池驱动，形成单电池水活化电池。 进入受监视的接头闭合的水浸湿磁带，激活电池。 电池产生足够的电压和电流，以长时间为传感器单元中的定时，代码生成和调制器电路供电。 激活的电路驱动调制器，其调制沿着光纤行进的光。 调制光在设备办公室进行监控，报警传感器的地址被解码。