陈俊杰,黄松岭,赵伟.油气管道缺陷漏磁检测数据压缩算法研究[J].电测与仪表,2014,51(15):. CHEN Junjie,HUANG Songling,ZHAO Wei.Research on compression algorithm for MFL detection data of oil and gas pipelines[J].Electrical Measurement & Instrumentation,2014,51(15):.
油气管道缺陷漏磁检测数据压缩算法研究
Research on compression algorithm for MFL detection data of oil and gas pipelines
Considering the massive original data together with limited data storing space and processing speed, it necessary to research fast, efficient and diagnostically lossless compression algorithm in magnetic flux leakage (MFL) detection. This paper analyzes the special requirements of data compression in MFL detection, and proposes a segmented self-adaptive compression algorithm considering the feature of inspection data. The MFL data is divided into different segments, and different compression methods are applied to them. The section length together with compression threshold could adjust the compression ratio and distortion factor. The result of experiment, based on MFL detection data of pipelines with standard defects, shows that the algorithm gets high compression ratio while keeping low distortion factor. The algorithm could meet requirements on efficiency, quality and complexity to compress massive MFL data fast and efficiently.
