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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >PERFORMANCES OF A HIGH-SPEED IMPEDANCE CAMERA FOR FLOW INFORMATICS
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PERFORMANCES OF A HIGH-SPEED IMPEDANCE CAMERA FOR FLOW INFORMATICS

机译：流动信息的高速阻抗相机的性能

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摘要

An impedance camera has been developed and optimized for visualization and measurement of two-phase flows. This camera, in its basic construction, can synchronously map two cross sections of a pipeline flow in time sequence, where the components of the flow have impedance contrast. Flow velocity distribution can be implemented from the two series of images using the cross-correlation method. The data capture, image reconstruction, concentration and velocity implementation, all are processed on-line using multi-digital signal processor built in the camera. This paper presents a part of test results regarding to the system major performances of the measurement repeatability, consistency of 16 parallel measurement channels, speeds of data acquisition, rate of image reconstruction and cross-correlation implementation, estimation of the discrimination error in flow velocity and flow rate measurements, etc.
机译：已开发并优化了阻抗相机，以可视化和测量两相流。该摄像机的基本结构可以按时间顺序同步绘制管道流的两个横截面，其中流的组成部分具有阻抗对比。可以使用互相关方法根据两个图像序列实现流速分布。数据捕获，图像重建，浓度和速度实现全部使用内置在摄像机中的多数字信号处理器进行在线处理。本文介绍了与系统主要性能有关的部分测试结果，这些性能包括：测量重复性，16个并行测量通道的一致性，数据采集速度，图像重建速率和互相关实现，估计流速中的辨别误差以及流量测量等

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