The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Vazamentos de gás ou água em tubulações enterradas ou situadas nas paredes de edifícios podem ocorrer devido ao envelhecimento ou a acidentes imprevisíveis, como terremotos. Portanto, a detecção de vazamentos em tubulações é uma tarefa importante e tem sido extensivamente investigada. No presente artigo, propomos um novo método de detecção de vazamentos por meio de ondas acústicas. Injetamos um sinal acústico em um pipeline alvo e, em seguida, estimamos a localização do vazamento a partir do tempo de atraso do pulso comprimido, passando o sinal refletido através de um correlacionador. A fim de distinguir uma reflexão de vazamento em um arranjo complicado de tubulação, as características de reflexão dos vazamentos são cuidadosamente discutidas por meio de simulações numéricas e experimentos. Há uma diferença notável nas características de reflexão entre o vazamento e outros tipos de descontinuidade, e a propriedade pode ser utilizada para distinguir a reflexão do vazamento. Os resultados experimentais mostram que, mesmo em arranjos de tubos complicados, incluindo curvas e ramificações, a abordagem proposta pode implementar com sucesso a detecção de vazamentos. Além disso, a abordagem proposta tem baixo custo e é fácil de implementar porque apenas são necessários um computador pessoal e alguns equipamentos comuns.
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Umut YUNUS, Masaru TSUNASAKI, Yiwei HE, Masanobu Kominami , Katsumi YAMASHITA, "Detection of Leak Location in a Pipeline by Acoustic Signal" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 8, pp. 2053-2061, August 2008, doi: 10.1093/ietfec/e91-a.8.2053.
Abstract: Gas or water leaks in pipes that are buried under ground or that are situated in the walls of buildings may occur due to aging or unpredictable accidents, such as earthquakes. Therefore, the detection of leaks in pipes is an important task and has been investigated extensively. In the present paper, we propose a novel leak detection method by means of acoustic wave. We inject an acoustic chirp signal into a target pipeline and then estimate the leak location from the delay time of the compressed pulse by passing the reflected signal through a correlator. In order to distinguish a leak reflection in a complicated pipeline arrangement, the reflection characteristics of leaks are carefully discussed by numerical simulations and experiments. There is a remarkable difference in the reflection characteristics between the leak and other types of discontinuity, and the property can be utilized to distinguish the leak reflection. The experimental results show that, even in a complicated pipe arrangement including bends and branches, the proposed approach can successfully implement the leak detection. Furthermore, the proposed approach has low cost and is easy to implement because only a personal computer and some commonly equipment are required.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.8.2053/_p
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@ARTICLE{e91-a_8_2053,
author={Umut YUNUS, Masaru TSUNASAKI, Yiwei HE, Masanobu Kominami , Katsumi YAMASHITA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Detection of Leak Location in a Pipeline by Acoustic Signal},
year={2008},
volume={E91-A},
number={8},
pages={2053-2061},
abstract={Gas or water leaks in pipes that are buried under ground or that are situated in the walls of buildings may occur due to aging or unpredictable accidents, such as earthquakes. Therefore, the detection of leaks in pipes is an important task and has been investigated extensively. In the present paper, we propose a novel leak detection method by means of acoustic wave. We inject an acoustic chirp signal into a target pipeline and then estimate the leak location from the delay time of the compressed pulse by passing the reflected signal through a correlator. In order to distinguish a leak reflection in a complicated pipeline arrangement, the reflection characteristics of leaks are carefully discussed by numerical simulations and experiments. There is a remarkable difference in the reflection characteristics between the leak and other types of discontinuity, and the property can be utilized to distinguish the leak reflection. The experimental results show that, even in a complicated pipe arrangement including bends and branches, the proposed approach can successfully implement the leak detection. Furthermore, the proposed approach has low cost and is easy to implement because only a personal computer and some commonly equipment are required.},
keywords={},
doi={10.1093/ietfec/e91-a.8.2053},
ISSN={1745-1337},
month={August},}
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TY - JOUR
TI - Detection of Leak Location in a Pipeline by Acoustic Signal
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2053
EP - 2061
AU - Umut YUNUS
AU - Masaru TSUNASAKI
AU - Yiwei HE
AU - Masanobu Kominami
AU - Katsumi YAMASHITA
PY - 2008
DO - 10.1093/ietfec/e91-a.8.2053
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2008
AB - Gas or water leaks in pipes that are buried under ground or that are situated in the walls of buildings may occur due to aging or unpredictable accidents, such as earthquakes. Therefore, the detection of leaks in pipes is an important task and has been investigated extensively. In the present paper, we propose a novel leak detection method by means of acoustic wave. We inject an acoustic chirp signal into a target pipeline and then estimate the leak location from the delay time of the compressed pulse by passing the reflected signal through a correlator. In order to distinguish a leak reflection in a complicated pipeline arrangement, the reflection characteristics of leaks are carefully discussed by numerical simulations and experiments. There is a remarkable difference in the reflection characteristics between the leak and other types of discontinuity, and the property can be utilized to distinguish the leak reflection. The experimental results show that, even in a complicated pipe arrangement including bends and branches, the proposed approach can successfully implement the leak detection. Furthermore, the proposed approach has low cost and is easy to implement because only a personal computer and some commonly equipment are required.
ER -