Study on recognition method based on RBF neural network for <br /> intrusion events of oil and gas pipeline<br />
Journal Title: Science Paper Online - Year 2006, Vol 1, Issue 3
Abstract
A recognition method for intrusion events is studied, which is used in the distributed optical fiber pre-warning system for the safety of oil and gas pipeline. In this pre-warning system, which is based on the principle of Mach-Zehnder optical fiber interferometer, an optical cable is laid along the pipeline in the same ditch and three single mode optical fibers in the optical cable build up the distributed micro-vibrant measuring sensor. The system can judge whether intrusion events have occurred by detecting the vibration signals along the pipeline in real-time, extracting the eigenvectors of the vibration signals by the “energy-status” method based on wavelet package analysis, and the recognition through the RBF neural network. Subsequently the position of the intrusion events can be located. Finally, the data obtained at oil field prove the effectiveness of this method.
Authors and Affiliations
Shijiu Jin , Zhigang Qu, Yan Zhou
乙烯淤浆聚合牌号过渡过程的模拟
采用PC-SAFT状态方程计算乙烯聚合反应体系的物性;运用反应机理分析进行聚合过程建模;利用工业装置采集的数据,从宏观转化率、分子量及分布2个方面对所建模型进行了验证,确定了催化剂活性位为5个;构建了乙烯淤浆聚合工业流程的多活性...
Scheme for implementing the Deutsch-Jozsa algorithm<br /> via atomic ensembles<br />
This paper proposes a physical scheme for implementing the Deutsch-Jozsa (D-J) algorithm using atomic ensembles and optical devices. The scheme has inherent fault tolerance function to the realistic noise and efficient s...
Research on the Self-healing of Cementitious Calillary Crystalline Waterproofing Material
The crack and leakage is always stubborn disease in concrete structure. Using water as its carrier cementitious calillary crystalline waterproofing material (i.e. CCCW) can be transmitted in the capillaries of concrete b...
Design and development of an ecg monitoring system based on wireless system-on-chip technology
For the purpose of better preventing cardiovascular diseases and improving the life quality of human beings, a scheme of an electrocardiogram (ECG) monitoring system based on wireless system-on-chip technology is present...
An improved channel estimation method for OFDM system in uplink
In this paper, an improved channel estimation method based on code division multiplexing (CDM) pilot is proposed to mitigate interference among pilot sequences for orthogonal frequency division multiplexing (OFDM) system...