基于相关检测的磁定位清管器智能跟踪定位研究
Research on Intelligent Tracking and Positioning of Magnetic Positioning Pipeline Cleaner Based on Correlation Detection

清管器在油气管道运输领域扮演着重要角色，清管器发生堵塞时不及时解决会对油气管道作业造成严重安全隐患，但准确找到清管器的位置目前存在一定难度。相关检测在弱信号检测方面具有很强的优势，将相关检测与清管器定位相结合的检测方式对清管器定位具有重要意义。研究基于相关检测的磁定位方法，清管器搭载磁信号发射机在管道运行时持续发射极低频磁信号，管道上方预设定位接收机用来判断清管器信号和发送位置信息；清管器经过预设定位接收机时，定位接收机接收判断清管器的信号，判断是否为清管器，然后将清管器通过时间、位置信息通过4G网络发送至数据分析中心，通过上位机显示。当清管器堵塞时，上位机通过堵塞报警提醒工作人员。研究结果表明，该方法能在复杂强干扰环境中准确检测到清管器，能够精准检测20 m范围内的清管器信号。本研究成功实现了基于相关检测的清管器定位，杜绝了目前清管器检测漏报、误报严重的情况，实现真正意义上的无人值守。
Pigs play an important role in the transportation of oil and gas pipelines. If the blockage of the pig is not resolved in a timely manner, it can cause serious safety hazards to oil and gas pipeline opera-tions. However, accurately locating the position of the pig currently poses certain difficulties. Corre-lation detection has strong advantages in weak signal detection, and the detection method that combines correlation detection with pig positioning is of great significance for pig positioning. Re-search on magnetic positioning methods based on correlation detection. The pipeline cleaner is equipped with a magnetic signal transmitter that continuously emits extremely low frequency magnetic signals during pipeline operation. A positioning receiver is preset above the pipeline to determine the signal of the pipeline cleaner and send location information; When the pig passes through the preset positioning receiver, the positioning receiver receives the signal to determine whether the pig is a pig, and then sends the pig’s time and position information to the data analysis center through the 4G network, which is displayed on the upper computer. When the cleaner is blocked, the upper computer alerts the staff through a blockage alarm. The research results indi-cate that this method can accurately detect pipeline cleaners in complex and strong interference environments, and can detect pipeline cleaner signals within a range of 20 m, with a accuracy of 100%. This study successfully achieved the positioning of pipeline cleaners based on correlation detection, eliminating the serious situation of missed and false alarms in pipeline cleaner detection, and achieving true unmanned operation.