基于光电内测法的卧式油罐容量计量方法理论与试验研究

Study on Internal Electro-optical Measuring Method For Horizontal Tank Volume Measurement

提出了一种基于光电内测原理的卧式罐容量全自动测量方法。讨论了一种卧式罐坐标数据分析算法，针对卧式罐截面曲线不规则的特点，采用曲率计算方法自动进行弧线段与直线段的识别，通过Riemann体积叠加原理计算出卧式罐不同液位高度对应的容积值。进行了对比试验，光电内测法与容量比较法测得的容量值具有较好的一致性。随着液位升高，二者相对偏差逐渐减小，全量程相对偏差为0．2％，验证了该方法的有效性。

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 Riemanu 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.