摘要
高寒地区地埋输油管道冰堵的发生不仅影响输送效率,而且,堵塞点的定位与排除需要大量的人力物力,如何精确定位十分重要。提出了利用球形模型增强堵塞来产生突变的正负压波,利用具有良好消噪能力与时频局域特性的小波变换技术来进行压力波的突变检测,并通过实验验证取得了较高的定位精度,具有一定的先进性和实用性。
The occurrence of ice-block in buried pipeline in high cold area will not only affect the transport efficiency,but also need massive manpower and resources to deal with. The precise of localization is very important. The sphere model is proposed to enhance the block and to generate sudden positive and negative pressure wave. The mutation of pressure is detected through the technique of wavelet transform which has well denoising ability and property in time-frequency. High localization precision is achieved through experimental verification. This technology is advanced and useful.
出处
《传感器与微系统》
CSCD
北大核心
2009年第12期106-108,112,共4页
Transducer and Microsystem Technologies
基金
辽宁省教育厅高等学校科研计划资助项目(2008S116)
关键词
小波变换
堵塞
检测
定位
wavelet transform
block
detection
localization
