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首页> 外文期刊>Sensors Journal, IEEE >Capacitive Sensor for Measuring the Filled of Post-Tensioned Ducts. Experimental Setup, Modeling and Signal Processing
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Capacitive Sensor for Measuring the Filled of Post-Tensioned Ducts. Experimental Setup, Modeling and Signal Processing

机译：电容传感器，用于测量后张紧的管道的填充。实验设置，建模和信号处理

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摘要

This paper presents a newly developed system for bridges post-tensioned devices inspection. These devices are generally composed of cables placed inside a duct, the residual space being filled with a particular cement to avoid corrosion. The nondestructive experimental setup uses a capacitive sensor that gives some relevant information about the electrical properties of the materials located inside the duct. Then, using an original modeling of the interactions between the sensor and the post-tensioned device, a signal processing extracts useful information from the sensors data, like the thickness of an eventual air gap between the cement and the duct. Experimental and theoretical derivations and comparisons are presented in the different parts of this paper.
机译：本文提出了一种新开发的桥梁后张设备检查系统。这些设备通常由放置在管道内的电缆组成，剩余空间填充有特定的水泥以避免腐蚀。无损实验装置使用电容传感器，该传感器提供有关位于管道内部的材料的电学特性的一些相关信息。然后，使用传感器与后张紧设备之间相互作用的原始模型，信号处理会从传感器数据中提取有用的信息，例如水泥与管道之间最终气隙的厚度。实验和理论上的推导和比较在本文的不同部分进行了介绍。

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