关键词: 输油管道, 自动检测, 红外成像法, 热力学传导理论, 温度场分布, 数学模型, 红外管道探测仪

Abstract: In order to assisting perambulation of underground petroleum pipeline,an infrared imaging method for rapidly detecting the stealing branches of pipeline and locating the leakage spots was proposed.A mathematic model for simulating the temperature distribution of the earth's surface above the underground pipeline was established on the basis of the heat exchange theory.This model demonstrated the feasibility of the infrared imaging method.The hardware architecture of infrared pipeline detector was designed.This hardware takes an uncooled infrared focal plane array as a sensor and has the capability of real-time imaging and portability.Moreover,the automatic detection of the underground petroleum pipeline by computer was achieved by some image processing algorithms,such as image enhancement,image segmentation,and skeleton track.Oilfield experiment shows that this infrared pipeline detector can be used to detect the location,trend and branch of underground pipeline easily.

Key words: petroleum pipeline automatic detection infrared imaging method heat exchange theory temperature distribution mathematical model infrared pipeline detector