专利详细信息

基于音波信号检测输气管道微泄漏的建模方法

文献类型：专利

专利类型：发明专利

是否失效：否

是否授权：否

申请号：CN201611121636.7

申请日：20161208

发明人：利节向毅陈国荣熊茜刘松高铮杜晓霞罗建伟

申请人：重庆科技学院

申请人地址：401331 重庆市沙坪坝区大学城东路20号

公开日：20170531

公开号：CN106764451A

代理人：龙玉洪

代理机构：重庆为信知识产权代理事务所(普通合伙)

语　　种：中文

摘　　要：本发明提供了一种基于音波信号检测输气管道微泄漏的建模方法，包括以下步骤：构建正压输气管道系统，采集微泄漏音波信号，对采集到的音波信号进行预处理，建立微泄漏音波信号的高斯分布模型，根据测试音波信号的欧式距离与建立的高斯分布距离判断是否发生微泄漏。该发明在有限数据的条件下，通过构建微泄漏音波信号高斯分布模型来识别微泄漏信号，不仅有助于正压气体输气管道的微泄漏识别，而且在未来的研究中有助于解决管道微泄漏的泄漏点定位问题，避免了大量的物理公式且更为实用。

主权项：1.一种基于音波信号检测输气管道微泄漏的建模方法，其特征在于，包括如下步骤：S1：构建正压输气管道系统，采集微泄漏音波信号，其中，该正压输气管道系统由压缩机提供定压气体，将定压气体压入圆形管道，最后将定压气体压入另一个压缩机内，将第一麦克风放置于泄漏点，将第二麦克风放置于距泄漏点l米的管道处，所述第一麦克风和第二麦克风用于采集音波信号，该音波信号包括微泄漏音波信号和无泄漏音波信号；S2：对采集到的音波信号进行预处理： $<math> <mrow> <mi>Δ</mi> <mi>S</mi> <mi>n</mi> <mo>=</mo> <mfrac> <mn>1</mn> <msub> <mi>N</mi> <mn>1</mn> </msub> </mfrac> <munderover> <mo>Σ</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>N</mi> <mn>1</mn> </msub> </munderover> <msub> <mi>Sn</mi> <mi>i</mi> </msub> <mo>-</mo> <mfrac> <mn>1</mn> <msub> <mi>N</mi> <mn>2</mn> </msub> </mfrac> <munderover> <mo>Σ</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>N</mi> <mn>2</mn> </msub> </munderover> <msub> <mi>b</mi> <mi>i</mi> </msub> <mo>;</mo> </mrow></math>$ $<math> <mrow> <mi>Δ</mi> <mi>S</mi> <mi>l</mi> <mo>=</mo> <mfrac> <mn>1</mn> <msub> <mi>N</mi> <mn>3</mn> </msub> </mfrac> <munderover> <mo>Σ</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>N</mi> <mn>3</mn> </msub> </munderover> <msub> <mi>Sl</mi> <mi>i</mi> </msub> <mo>-</mo> <mfrac> <mn</p><p class='subject'><strong>关键词：</strong>音波信号泄漏 <b class='type_ico_id'></b>输气管道高斯分布模型构建预处理采集定位问题 <b class='type_ico_id'></b>高斯分布距离判断 <b class='type_ico_id'></b>欧式距离 <b class='type_ico_id'></b>物理公式泄漏信号正压气体 <b class='type_ico_id'></b>泄漏点建模正压测试检测研究 </p><p class='class'><strong>IPC专利分类号：</strong>F17D5/00(20060101);F17D5/06(20060101);G01M3/24(20060101)</p>
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