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首页> 外文会议>Conference on process imaging for automatic control >An electrical capacitance tomography sensor with internal-external electrodes
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An electrical capacitance tomography sensor with internal-external electrodes

机译：具有内部外部电极的电容断层扫描传感器

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Using a conventional electrical capacitance tomography (ECT) sensor, it is difficult to image either small objects or objects in the central area. For the measurement of a thin layer of solids found near the walls of a circulating fluidised bed (CFB), a new type of sensor is proposed, having conventional external array of electrodes plus an additional internal array of electrodes. Sensitivity maps for this sensor were generated usign a finite difference method (FDM) and its performance in image reconstruction evaluated using both as linear back-projection (LBP) and an iterative algorithm. Compared with a square external-electrode sensor, the new sensor has higher sensitivity in the central area of the sensor, and thus is able to produce improved images. This has significant advantages for imaging the well-known core-annulus structure of solids distribution in CFB combustors.
机译：使用传统的电容断层扫描（ECT）传感器，难以在中心区域的小物体或物体上进行图像。为了测量在循环流化床（CFB）的壁附近的薄层的测量，提出了一种新的传感器，具有传统的外部电极阵列以及另外的电极阵列。该传感器的灵敏度映射由USIGN一种有限差分方法（FDM）及其在使用作为线性背部投影（LBP）和迭代算法的图像重建中的性能。与方形外电极传感器相比，新传感器在传感器的中心区域具有更高的灵敏度，因此能够产生改进的图像。这具有显着的优点，可在CFB燃烧器中对固体分布的众所周知的核心环结构进行成像。

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