CN110671613B - 基于改进经验小波变换的流体管道泄漏信号时延估计方法 - Google Patents
基于改进经验小波变换的流体管道泄漏信号时延估计方法 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/148—Wavelet transforms
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CN111238362B (zh) * | 2020-01-20 | 2021-10-26 | 西安理工大学 | 一种深孔钻削中孔圆度误差实时监测的方法 |
CN111365625A (zh) * | 2020-04-13 | 2020-07-03 | 安徽理工大学 | 一种基于延迟求和的管道泄漏声波定位方法 |
CN111474091A (zh) * | 2020-04-27 | 2020-07-31 | 上海化工研究院有限公司 | 一种淤浆环管反应器内颗粒粒径分布的测量系统 |
CN111947040A (zh) * | 2020-08-24 | 2020-11-17 | 重庆邮电大学 | 基于均值分解和信号清晰度的管道泄漏信号时延估计方法 |
CN111956209B (zh) * | 2020-08-27 | 2022-06-03 | 重庆邮电大学 | 一种基于ewt和结构特征提取的心电信号r波识别方法 |
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CN113048404B (zh) * | 2021-03-12 | 2022-08-16 | 常州大学 | 一种城市气体管道微小泄漏诊断方法 |
CN113537102B (zh) * | 2021-07-22 | 2023-07-07 | 深圳智微电子科技有限公司 | 一种微震信号的特征提取方法 |
CN113688692A (zh) * | 2021-07-29 | 2021-11-23 | 浙江大学 | 基于探地雷达时频尺度特征的供水管道漏损检测方法 |
CN113916463B (zh) * | 2021-09-01 | 2023-09-19 | 西安邮电大学 | 一种危化品运输存储罐泄漏检测方法 |
CN117053129B (zh) * | 2023-10-12 | 2023-12-15 | 山西瑞赛科环保科技有限公司 | 一种液氯的安全风险预警平台、方法、电子设备以及介质 |
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JPH11201859A (ja) * | 1998-01-13 | 1999-07-30 | Mitsui Eng & Shipbuild Co Ltd | 周波数帯域分割による配管漏洩検知方法 |
CN102563361A (zh) * | 2012-01-18 | 2012-07-11 | 中国石油大学(华东) | 基于常规数据和音波信号的输气管道泄漏检测定位装置及方法 |
CN104655425B (zh) * | 2015-03-06 | 2017-05-03 | 重庆大学 | 基于稀疏表示和大间隔分布学习的轴承故障分类诊断方法 |
CN105760839A (zh) * | 2016-02-22 | 2016-07-13 | 重庆大学 | 基于多特征流形学习与支持向量机的轴承故障诊断方法 |
CN106641740A (zh) * | 2016-12-15 | 2017-05-10 | 中国石化销售有限公司华南分公司 | 一种输油管道微小泄漏信号识别方法 |
CN106704834A (zh) * | 2016-12-28 | 2017-05-24 | 吉林省百瑞生科技发展有限公司 | 一种次声波监测和定位管道泄漏的装置及方法 |
CN108107475B (zh) * | 2018-03-05 | 2019-07-19 | 吉林大学 | 基于经验小波变换和多阈值函数的井中微地震去噪方法 |
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