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Study on Array Electrode System for Visualization Measurement in Air-Solid Two-Phase Flow

In power, chemical, pharmaceutical, metallurgical, and other industrial production, the visual information of gas-solid two-phase flow in closed pipelines is of great significance to the safety, economy, and efficiency of the production process. According to the basic principle of electrical capacitance tomography (ECT), we analyzed and designed a 12-electrode capacitance sensor, realized the data acquisition circuit with capacitance digital conversion (CDC) chip as the core and ARM chip as the control platform, and developed the upper computer software based on QT. We have tested the visualization system, and the results show that the system has significant stability, and the measurement results are clear and accurate.