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| Study on Internal Electro-optical Measuring Method For Horizontal Tank Volume Measurement |
| LIU Zi-yong,WANG Jin-tao,GUO Li-gong,ZHANG Long,BAO Xue-song,TONG Lin |
| National Institute of Metrology, Beijing 100013, China |
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Abstract Based on internal electro-optical principle, one automated measuring method used for horizontal tank volume measurement is proposed. A coordinate data analysis algorithm for horizontal tank is discussed, and one volume computation algorithm at each liquid lever is introduced based on Riemann superimposition method. Since the section curve of horizontal tank is irregular, one method for identification between arc and line is proposed according to the curvature computation. One comparison experimental system is designed, and the measurement result from volumetric method is regarded as reference. There is good consistency between volumetric and internal electro-optical method. With the increase of liquid level, the relative error became smaller, and the full range relative error is 0.2%, which verified the measuring method discussed.
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2011, Vol. 32 
