<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5928</journal-id>
<journal-title><![CDATA[Ingeniería Electrónica, Automática y Comunicaciones]]></journal-title>
<abbrev-journal-title><![CDATA[EAC]]></abbrev-journal-title>
<issn>1815-5928</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59282019000300002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Detección y localización de fuga de fondo en tuberías plásticas de agua bajo un ambiente ruidoso]]></article-title>
<article-title xml:lang="en"><![CDATA[Detection and location of background leakage in plastic water pipes under a noisy environment]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trutié-Carrero]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado-Hernández]]></surname>
<given-names><![CDATA[Lázaro Ariel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Zamora]]></surname>
<given-names><![CDATA[Calixto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Beltrán]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de La Habana &#8220;José Antonio Echeverría&#8221;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,CINAVAL  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>40</volume>
<numero>3</numero>
<fpage>1</fpage>
<lpage>15</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59282019000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59282019000300002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59282019000300002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La detección y localización de fugas de fondo es un tema que presenta gran importancia para los sistemas de distribución de agua debido a que dicho fenómeno es uno de los eventos que intervienen en la pérdida de este recurso natural. Este problema ha propiciado que exista gran interés por la comunidad científica en desarrollar procedimientos que mejoren la detección y localización de la fuga de fondo, realizando para esto mediciones bajo un ambiente controlado. No obstante, en la práctica las señales de fuga coexisten con el ruido blanco y el de color. Por tal motivo, en este artículo se propone un nuevo procedimiento para detectar y localizar la fuga de fondo bajo un ambiente ruidoso. Para realizar la detección se utilizó la función coherencia y en la localización se empleó un filtro digital pasa banda para aplicar la función correlación cruzada en la gama de frecuencias donde mejor relación señal a ruido exista. Para validar y comparar el procedimiento propuesto con los reportados por la comunidad científica se utilizó MATLAB y se adquirieron 150 señales en el laboratorio, las cuales fueron divididas en dos grupos. El primero presenta 90 señales con presencia de fuga de fondo y en las del otro grupo solamente existe ruido. Tras finalizar el análisis el nuevo procedimiento utilizado arrojó un error de 2.1 % en la localización de la fuga de fondo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Detection and location of background leaks in water pipes is an issue of great importance for water distribution systems because this phenomenon is one of the events involved in the loss of this natural resource. This problem has led to great interest by the scientific community in developing procedures that improve the detection and location of the background leak, making for this measurements under a controlled environment. In practice, however, leakage signals coexist with white and colored noise. For this reason, this article proposes a new procedure for detecting and locating background leakage under a noisy environment. In order to carry out the detection, the coherence function was used and in the location a digital band-pass filter was used to apply the cross-correlation function in the frequency range where the best signal-to-noise ratio exists. To validate and compare the proposed procedure with those reported by the scientific community, MATLAB was used and 150 signals were acquired in the laboratory, which were divided into two groups. The first group presents 90 signals with the presence of background leakage and in the other group there is only noise. After finishing the analysis, the new procedure used showed an error of 2.1 % in the location of the background leak.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Coherencia]]></kwd>
<kwd lng="es"><![CDATA[Correlación cruzada]]></kwd>
<kwd lng="es"><![CDATA[Detección]]></kwd>
<kwd lng="es"><![CDATA[Fugas de fondo]]></kwd>
<kwd lng="es"><![CDATA[Ruido]]></kwd>
<kwd lng="en"><![CDATA[Background leaks]]></kwd>
<kwd lng="en"><![CDATA[Coherence]]></kwd>
<kwd lng="en"><![CDATA[Cross correlation]]></kwd>
<kwd lng="en"><![CDATA[Detection]]></kwd>
<kwd lng="en"><![CDATA[Noise]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rathnayaka]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Shannon]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Rajeev]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Kodikara]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Monitoring of pressure transients in water supply networks]]></article-title>
<source><![CDATA[Water resources management]]></source>
<year>2016</year>
<volume>30</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>471-85</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Karadirek]]></surname>
<given-names><![CDATA[IE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Urban water losses management in Turkey: The legislation and challenges]]></article-title>
<source><![CDATA[Anadolu University Journal of Science and Technology-A Applied Sciences and Engineering]]></source>
<year>2016</year>
<volume>17</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>572-84</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mutikanga]]></surname>
<given-names><![CDATA[HE]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Vairavamoorthy]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Methods and tools for managing losses in water distribution systems]]></article-title>
<source><![CDATA[Journal of Water Resources Planning and Management]]></source>
<year>2012</year>
<volume>139</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>166-74</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Matos]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
</person-group>
<source><![CDATA[Casi un millón de personas afectadas en Cuba por la sequía]]></source>
<year>2017</year>
<publisher-name><![CDATA[Agencia Cubana de Noticias]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kadri]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Yaacoub]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Mushtaha]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[Empirical evaluation of acoustical signals for leakage detection in underground plastic pipes]]></source>
<year>2014</year>
<conf-name><![CDATA[ 17thIEEE Mediterranean Electrotechnical Conference]]></conf-name>
<conf-loc>Beirut, Lebanon </conf-loc>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Brennan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Joseph]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Whitfield]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Dray]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Paschoalini]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the acoustic filtering of the pipe and sensor in a buried plastic water pipe and its effect on leak detection: an experimental investigation]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2014</year>
<volume>14</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>5595-610</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Brennan]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[FC]]></given-names>
</name>
<name>
<surname><![CDATA[Joseph]]></surname>
<given-names><![CDATA[PF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Improving the shape of the cross-correlation function for leak detection in a plastic water distribution pipe using acoustic signals]]></article-title>
<source><![CDATA[Applied Acoustics]]></source>
<year>2017</year>
<volume>127</volume>
<page-range>24-33</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Ma]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Cheng]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of the differentiation process into the correlation-based leak detection in urban pipeline networks]]></article-title>
<source><![CDATA[Mechanical Systems and Signal Processing]]></source>
<year>2018</year>
<volume>112</volume>
<page-range>251-64</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Shin]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Song]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Park]]></surname>
<given-names><![CDATA[DI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Leak Detection and Location of Water Pipes Using Vibration Sensors and Modified ML Prefilter]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2017</year>
<volume>17</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>2104</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martini]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rivola]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Troncossi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Autocorrelation Analysis of Vibro-Acoustic Signals Measured in a Test Field for Water Leak Detection]]></article-title>
<source><![CDATA[Applied Sciences]]></source>
<year>2018</year>
<volume>8</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>2450</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Na]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Tie]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<source><![CDATA[An adaptive method for water pipeline leak localization]]></source>
<year>2018</year>
<publisher-name><![CDATA[Atlantis Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Trutié-Carrero]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Valdés-Santiago]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[León-Mecías]]></surname>
<given-names><![CDATA[Á]]></given-names>
</name>
<name>
<surname><![CDATA[Ramírez-Beltrán]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Detección y Localización de Ruptura Súbita mediante Transformada Wavelet Discreta y Correlación Cruzada]]></article-title>
<source><![CDATA[Revista Iberoamericana de Automática e Informática industrial]]></source>
<year>2018</year>
<volume>15</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>211-6</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Teng]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Ding]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Ma]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Kusiak]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of cyclic coherence function to bearing fault detection in a wind turbine generator under electromagnetic vibration]]></article-title>
<source><![CDATA[Mechanical Systems and Signal Processing]]></source>
<year>2017</year>
<volume>87</volume>
<page-range>279-93</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abboud]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Elbadaoui]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Becquerelle]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Lalmi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The application of the cyclic coherence for distributed planet fault detection in planetary gears]]></article-title>
<source><![CDATA[International Journal of Condition Monitoring]]></source>
<year>2018</year>
<volume>8</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>58-63</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dekys]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Condition monitoring and fault diagnosis]]></article-title>
<source><![CDATA[Procedia Engineering]]></source>
<year>2017</year>
<volume>177</volume>
<page-range>502-9</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McAllister]]></surname>
<given-names><![CDATA[BT]]></given-names>
</name>
<name>
<surname><![CDATA[Parker]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Ivanov]]></surname>
<given-names><![CDATA[EN]]></given-names>
</name>
<name>
<surname><![CDATA[Tobar]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<source><![CDATA[Cross-correlation Signal Processing for Axion and WISP Dark Matter Searches]]></source>
<year>2018</year>
<publisher-name><![CDATA[IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chamberlin]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
<name>
<surname><![CDATA[Creighton]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
<name>
<surname><![CDATA[Siemens]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Demorest]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Ellis]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Price]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Time-domain implementation of the optimal cross-correlation statistic for stochastic gravitational-wave background searches in pulsar timing data]]></article-title>
<source><![CDATA[Physical Review D]]></source>
<year>2015</year>
<volume>91</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>044048</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yan]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Lu]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temperature measurement of stored biomass using low-frequency acoustic waves and correlation signal processing techniques]]></article-title>
<source><![CDATA[Fuel]]></source>
<year>2018</year>
<volume>227</volume>
<page-range>89-98</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
