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首页> 外文期刊>Sensors and Actuators, A. Physical >Sewerage tunnel leakage detection using a fibre optic moisture-detecting sensor system
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Sewerage tunnel leakage detection using a fibre optic moisture-detecting sensor system

机译：使用光纤湿度检测传感器系统的污水管道泄漏检测

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The design and development of a new fibre optic sensor system for the optical detection of leakages in sewerage tunnels is reported. The system developed overcomes the disadvantages of the usually employed camera based inspection systems which are relatively complex and, in addition, require cleaning of the structures to be monitored beforehand. The sensor concept created combines a Fibre Bragg Grating (FBG)-based humidity sensor and a swellable polymeric fibre optic sensor. Both sensors are located along the sewerage tunnel so that they can response immediately to any leakages that may occur. The swellable polymeric fibre optic sensor shows a response of 34.2 dB in the presence of water, a performance which is superior to that seen form other swellable polymeric fibre optic sensors reported so far. Furthermore, the resistance of both sensors to highly alkaline environments (pH 13.4), an important feature of such sensors was verified. Consequently, when compared to the use of conventional inspection techniques, the novel fibre optic sensor system provides a robust, relatively low-cost and continuous monitoring system well suited to use in sewerage tunnels. (C) 2014 Elsevier B.V. All rights reserved.
机译：报道了一种新型的光纤传感器系统的设计和开发，该系统可以对污水管道中的泄漏进行光学检测。所开发的系统克服了通常采用的基于照相机的检查系统的缺点，该系统相对复杂并且此外还需要预先清洁要监测的结构。创建的传感器概念结合了基于光纤布拉格光栅（FBG）的湿度传感器和可膨胀聚合物光纤传感器。两个传感器都位于污水管道中，因此它们可以立即响应可能发生的任何泄漏。可溶胀聚合物光纤传感器在有水的情况下显示出34.2 dB的响应，其性能优于迄今为止报道的其他可溶胀聚合物光纤传感器。此外，还验证了这两种传感器对强碱性环境（pH 13.4）的抵抗力，这是此类传感器的重要特征。因此，与使用常规检查技术相比，新型光纤传感器系统提供了一种坚固，成本相对较低且连续的监控系统，非常适合在污水隧道中使用。 （C）2014 Elsevier B.V.保留所有权利。

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