| 超声波智能清管器信号处理技术研究 |
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| 引用本文： | 盛沙,戴波,谢祖荣,曹献坤. 超声波智能清管器信号处理技术研究[J]. 北京石油化工学院学报, 2004, 12(1): 38-41 |
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| 作者姓名： | 盛沙 戴波 谢祖荣 曹献坤 |
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| 作者单位： | 武汉理工大学,武汉,430000;北京石油化工学院自动化系,北京,102617 |
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| 摘 要： | 超声波智能清管器进行在线管道壁腐蚀缺陷检测时,经常出现误差问题.针对此问题,笔者提出了一种基于快速傅立叶变换和功率谱密度计算的解决方法.并用VC 实现了实时处理,最后对管道壁腐蚀缺陷进行了模拟实验,结果表明这种方法不仅适用于在线管道壁腐蚀缺陷检测,而且能精确测量壁厚.
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| 关 键 词： | 超声波 管道检测 快速傅立叶变换 功率谱密度 |
| 修稿时间： | 2003-10-30 |
Research on Technique of Intelligent Ultrasonic Pipeline Pig for Signal Processing |
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| Sheng Sha Dai Bo Xie Zurong Cao Xiankun. Research on Technique of Intelligent Ultrasonic Pipeline Pig for Signal Processing[J]. Journal of Beijing Institute of Petro-Chemical Technology, 2004, 12(1): 38-41 |
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| Authors: | Sheng Sha Dai Bo Xie Zurong Cao Xiankun |
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| Affiliation: | Sheng Sha 1 Dai Bo 2 Xie Zurong 2 Cao Xiankun 1 |
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| Abstract: | Error usually occurs during inspection of on-line pipelines for wall-loss defects using intelligent pig. Aiming at this problem, an effective method based on FFT and power spectral density computing has been put forward. An analogue experiment concerning wall-loss defect inspection has been done with VC++ in the real time processing. This method is applicable for not only on-line inspection of corrosion and other wall-loss defects, but also accurate measurement of pipe wall thickness. |
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| Keywords: | ultrasonic pipeline inspection fast fourier transform power spectral density |
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