主动电场管道堵塞内检测方法研究

Research on on-line inspection of blockage in pipeline based on active electrolocation

主动电场定位的思想源自仿生学研究。生物学研究者发现,在没有光线的情况下,弱电鱼通过感应自身发射与接收电场的变化信息来捕获食物并导航,这种利用自身发射和接收电场来探测、识别、定位物体的能力被称之为主动电场定位识别。本文模拟弱电鱼水下电场定位原理研发出一种液体输送管道堵塞内检测实验系统。为检验该系统的有效性,模拟了不同材料管道(PVC管、有机玻璃管、铜管、镀锌钢管)的堵塞情况,运用自行设计的主动电场内检测探头对上述管道的堵塞情况进行了探测。研究表明该系统能够根据管道内部电场变化有效地探测不同材料管道的堵塞情况并对堵塞点出现的位置进行判定。从而发展出基于主动电场原理的液体输送管道内检测方法的新型原型机,为该技术的应用和深入的实验研究打下了基础。

The active electrolocation idea derives from biomimetic research. Alien biologists found that weakly elec- tric fish can prey on food and guide its direction in the dark by emitting and receiving electric field. This capability of inspecting, identifying and locating body is called active electrolocation. In this paper, an experimental inspection sys- tem for blockage inspecting in liquid conveying pipeline is presented, which simulates the underwater electrolocation principle for weakly electric fish. To test the validity of this system, the blockage in the pipelines of different materials （PVC, plexiglas, brass and galvanized steel） was simulated and tested using the active electric field detector designed by ourselves. Research shows that this system can effectively detect the blockage in the pipelines of different materials according to the internal electric field disturbance and determine the position of the blockage. On the basis of above research results, a new prototype for the blockage inspecting method in liquid conveying pipeline based on active electrolocation principle was developed, which establishes a foundation for the application and further research of the on-line pipeline inspection system based on active electrolocation principle.