发展光纤传感器网络

　　发展光纤传感器网络

　　本文着眼于光纤传感器网络的挑战和优势，着重于较低的数据速率。它涵盖了不同纤维技术的传感器和变送器的影响从远程网络玻璃塑料的短，低成本的实现，以及复用传感器的挑战，设备从Avago、工业光纤、亿光、霍尼韦尔。

　　光纤越来越多地被用作传感器网络的集成部分，用于在多个节点上聚合传感器数据，同时也作为传感器本身。这为光网络的使用和建立这种系统的组件开辟了新的机会。

　　随着人们对物联网和智能城市的兴趣越来越大，将传感器数据聚集到大范围，有时甚至像城市一样大的能力变得越来越重要。这正在转移一些光纤网络发展的焦点。传感器网络使用相对较低的数据速率，并且传统上没有使用高带宽光纤网络。然而，传感器的数量是现在光纤传输更有效和高效的媒介，只要数据可以有效地复用到光纤，准确de混合在另一端。这带来了额外的优势，因为光纤网络天生就不受电磁兼容和电气噪声的影响，使传感器能够在嘈杂的工业环境中更有效地工作。

　　A researcher at the UPNA-Public University of Navarre has looked at various fiber-optic sensor networks for the remote monitoring of large infrastructures. Montserrat Fernández-Vallejo， a telecommunications engineer， has developed an experimental network that is 250 km in size and has multiplexing capability to allow multiple channels to be carried at the same time. This has enabled new lines of research and a host of practical applications to be opened up， particularly for monitoring intelligent or large infrastructures where there are hundreds or even thousands of sensors. Such structures can be monitored from central sites many miles away， logging measurements of structural or environmental parameters， critical states to be observed， the correct maintenance to be provided， and even preventing accidents by highlighting failing equipment that can be repaired before it causes a problem. This applies not just on the scale of a city， but also for remote equipment such as oil rigs and other marine platforms with thousands of distributed sensors.