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长输管线泄漏检测的一类方法需要测量其端点甚至中间的流量信号,这是实际中所不希望的.本文提出了一种基于 Kullback 信息测度的长输管线泄漏检测方法,它通过对管线两个端点附近的压力梯度所构成的时间序列进行分析,从而检测出泄漏.这种方法只需要测量两个端点附近的四个压力信号,计算量又小,在实际中容易实现.该方法在一条长120米,内径10毫米的液体管线上进行了实验,结果表明,这是一种很有实用价值的检测方法.
One kind of methods of long-distance pipeline leakage detection needs to measure the flow signals of its endpoints or even in the middle, which is unrealistic in practice.This paper presents a long-distance pipeline leakage detection method based on Kullback information measure, This method only need to measure the four pressure signals near the two end points, the calculation amount is small, and it is easy to realize in practice. The method is based on the time series analysis of the pressure gradient near the end points, Length of 120 meters, diameter of 10 mm on the liquid pipeline conducted an experiment, the results show that this is a very practical method of detection.