WO2014050921A1 - Dispositif de production de sons de fuite simulés et procédé de production de sons de fuite simulés - Google Patents

Dispositif de production de sons de fuite simulés et procédé de production de sons de fuite simulés Download PDF

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Publication number
WO2014050921A1
WO2014050921A1 PCT/JP2013/075970 JP2013075970W WO2014050921A1 WO 2014050921 A1 WO2014050921 A1 WO 2014050921A1 JP 2013075970 W JP2013075970 W JP 2013075970W WO 2014050921 A1 WO2014050921 A1 WO 2014050921A1
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WO
WIPO (PCT)
Prior art keywords
sound
simulated
leakage sound
vibration
simulated leakage
Prior art date
Application number
PCT/JP2013/075970
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English (en)
Japanese (ja)
Inventor
宝珠山　治
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Publication of WO2014050921A1 publication Critical patent/WO2014050921A1/fr

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a simulated leakage sound generator and a simulated leakage sound generation method.
  • an inspector confirms vibration by ear and detects a water leak position in a pipe or the like.
  • the inspector listens to the water leakage sound from the surface of the earth, identifies the position where the water leakage sound is best heard, and checks the piping or the like to confirm whether or not the leakage has occurred.
  • an object of the present invention is to provide a simulated leakage sound generating apparatus and a simulated leakage sound generating method for generating a leakage sound without performing special processing on the piping. It is to provide.
  • the present invention includes a storage unit in which simulated leakage sound data imitating a leakage sound is recorded, a vibration unit that applies vibration to piping, and a vibration control unit that vibrates the vibration unit based on the simulated leakage sound data.
  • This is a simulated leakage sound generator.
  • the present invention is a simulated leakage sound generation method for generating simulated leakage sound by vibrating a pipe by vibration means based on simulated leakage sound data simulating leakage noise.
  • FIG. 1 is a block diagram of a leaking sound generator in the first embodiment.
  • FIG. 2 is a diagram for explaining the leaking sound generator in the first embodiment.
  • FIG. 3 is a diagram for explaining the leaking sound generator according to the first embodiment.
  • FIG. 4 is a diagram for explaining a method of using the leaking sound generator.
  • FIG. 5 is a diagram for explaining a method of using the leaking sound generator.
  • FIG. 6 is a block diagram of the simulated leaky sound generator 2 of the second embodiment.
  • FIG. 1 is a block diagram of a leaking sound generator according to the first embodiment.
  • the leakage sound generator 1 in the present embodiment includes a storage unit 10 in which simulated leakage sound data of simulated leakage sound is recorded, a vibration unit 11 that applies vibration to piping, and the vibration unit 1 based on simulated leakage sound data. And a vibration control unit 12 that vibrates.
  • the storage unit 10 stores simulated leakage sound data of simulated leakage sound that simulates leakage sound.
  • the simulated leaky sound data is simulated leaky sound data that simulates the leaked sound according to any of the conditions such as the material / thickness of the tube, the shape / size of the leaking hole, and the water pressure.
  • the simulated leak sound is not only simulated leak sound according to any condition such as pipe material / thickness, leaking hole shape / size, water pressure, etc., but also pipe installation method and embedment depth. Also included are simulated leaky sounds that take into account the environmental conditions in which leaks occur, such as the density of surrounding soil, the state of pipe joints, and daily life sounds.
  • the storage unit 10 stores pseudo-leakage sound data (for example, vending machine sound, sewage flow sound, vehicle noise, factory sound, etc.) that is similar to the water leak sound and may be mistaken by the inspector as a leak sound. It may be recorded.
  • the format of the simulated leaky sound data and the simulated leaky sound data file is not limited. For example, WAV which is an uncompressed format, WAV which is a compressed format, MP3, AAC, or the like is conceivable.
  • the simulated leakage sound data stored in the storage unit 10 may be one, but the desired leakage sound can be generated from the above-described multiple conditions and the environmental conditions in which the leakage sound has occurred. In order to do this, a plurality of simulated leakage sound data may be stored.
  • the vibration unit 11 is in contact with the tube and generates a leaking sound in the tube by vibration (injection, hereinafter the same).
  • vibration injection, hereinafter the same.
  • the driving element that applies vibration is able to apply a strong force to a small area.
  • there is little vibration other than the driving point For example, if the entire drive element vibrates greatly, it will be greatly audible to the outside as air vibration.
  • a driving element having such desirable properties there are a magnetostrictive element, a piezoelectric element, and the like.
  • the magnetostrictive element is an electromechanical conversion element based on a magnetostrictive effect that is deformed when time is given to a magnetic material. If a coil is wound around the magnetic body, the magnetic body can be vibrated in accordance with the signal current by passing a signal current (signal current corresponding to the simulated leakage sound data) through the coil.
  • the vibration control unit 12 vibrates the vibration unit 11 by reading desired simulated leakage sound data from the storage unit 10 and converting it into a signal current. Further, the vibration control unit 12 may control the magnitude of the vibration amplitude of the vibration unit 11. Thereby, the vibration control unit 12 can change the volume of the simulated leakage sound and the simulated leakage sound. Note that when there are a plurality of simulated leakage sound data, the vibration control unit 12 may display the type of simulated leakage sound on a display or the like so that the user can select the simulated leakage sound desired by the user.
  • the tube and the vibrating portion 2 of the leakage sound generator are in close contact with each other.
  • a rubber band or a string member 20 is attached to the leaking sound generator 1 and wound around the pipe as shown in FIG.
  • the tube and the vibration part 11 of the leakage sound generator 1 are brought into close contact with each other.
  • a magnet 21 is provided in the leaking sound generator 1, and this is adhered to the tube so that the tube and the vibrating portion 11 of the leaking sound generator 1 are brought into close contact with each other.
  • an elastic body 22 for example, a spring or a sponge
  • the tube and the vibrating portion 11 of the leaking sound generating device 1 are more closely attached. Can do.
  • the sound listening rod is a device that has a contact portion and a sound listening portion at the end of the rod, and listens to the sound by placing the tip of the rod (contact portion) on a pipe to investigate abnormal sounds.
  • the leak position can be easily shifted, so that various leak sounds with different conditions can be easily experienced.
  • the simulated leakage sound it is possible to experience a distant water leakage sound that cannot be realized in a training facility.
  • it does not actually leak it can be trained even in urban areas.
  • the leakage sound generator 1 As another method of using the leakage sound generator 1, it can also be used for correlation method training.
  • the correlation method is a measurement method for estimating the water leakage position from the cross-correlation of two signals sandwiching the leakage position.
  • it since it is necessary to actually leak, it can only be performed in a limited environment such as a training facility.
  • the leaking sound generator 1 it is not necessary to actually make a hole in the pipe, and it is not necessary to leak, so there is no need for a dedicated training field, and various by changing the installation position to various positions. Can be trained under the conditions of. If various types of simulated leaky sound data are prepared, training can be performed with various sounds under different conditions.
  • the leak sound generator 1 can also be used to improve the arrangement of vibration recording devices for leak detection.
  • vibration recording devices There are commercially available systems in which a large number of vibration recording devices are installed in urban manholes or the like for leak detection. However, vibration recording devices are expensive, so it is desirable to arrange them as few as possible and sparsely.
  • for leak detection it is desirable to arrange as densely as possible, but it is not known how densely it is possible to detect leaks.
  • the leaked sound generator 1 is also useful for an exhibition apparatus that allows a general museum visitor to experience a leaked sound in a museum or the like.
  • the simulated water leak sound can be presented with a sound stick placed on the tube. You can also create a game where you can try to see if the museum visitors can hear the simulated leak sound gradually.
  • FIG. 6 is a block diagram of the simulated leaky sound generator 2 of the second embodiment.
  • the simulated leaky sound generator 2 of the second embodiment collects the generated simulated leaky sound in addition to the simulated leaky sound generator 1 of the first embodiment, and based on the collected simulated leaky sound Thus, the filter correction is performed so as to be close to the actual leakage sound.
  • the simulated leaky sound generator 2 analyzes the microphone 30 that collects the generated simulated leaky sound and the collected simulated leaky sound. And a correction unit 31 that performs filter correction on the signal of the simulated leaky sound data so that the leaked sound is close to actual.
  • the correction unit 31 corrects linear differences such as frequency characteristics with a linear filter, and corrects distortion in contact with the magnetostrictive element and the tube with a non-linear filter.
  • the simulated leaky sound generator of the second embodiment can generate a leaky sound closer to an actual thing in the tube in addition to the effect of the simulated leaky sound generator of the first embodiment.
  • each unit is configured by hardware, but may be configured by a program that causes an information processing device (CPU) to perform the above-described operation processing.
  • CPU information processing device
  • the storage unit stores a plurality of the simulated leakage sound data,
  • the environmental conditions include at least one of the pipe material, thickness, shape of leaking hole, size, water pressure, installation method, burial depth, density of surrounding soil, and pipe joint state.
  • Sound collection means installed in the generating pipe; Correction means for correcting the simulated leakage sound generated based on the sound collected by the sound collection means, The simulated leakage sound generator according to any one of supplementary notes 1 to 4, wherein the vibration control means vibrates the vibration means based on the corrected simulated leakage sound.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

La présente invention concerne un dispositif de production de sons de fuite simulés possédant : un moyen de stockage dans lequel des données de sons de fuite simulés simulant des sons de fuite sont stockées ; un moyen vibrant qui applique une vibration à des tuyaux ; et un moyen de commande de vibrations qui amène le moyen vibrant à vibrer, sur la base des données de sons de fuite simulés.
PCT/JP2013/075970 2012-09-28 2013-09-26 Dispositif de production de sons de fuite simulés et procédé de production de sons de fuite simulés WO2014050921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-218036 2012-09-28
JP2012218036 2012-09-28

Publications (1)

Publication Number Publication Date
WO2014050921A1 true WO2014050921A1 (fr) 2014-04-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021127754A1 (fr) 2019-12-27 2021-07-01 Companhia De Saneamento Básico Do Estado De São Paulo - Sabesp Procédé et banc de simulation de signaux de fuite dans un conduit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05172689A (ja) * 1991-12-26 1993-07-09 Hitachi Ltd 漏洩検出器
JP2878804B2 (ja) * 1989-09-19 1999-04-05 東京瓦斯株式会社 配管の異常監視装置
JP2000266627A (ja) * 1999-03-12 2000-09-29 Osaka Gas Co Ltd 模擬的漏洩音の発生方法
JP2000266629A (ja) * 1999-03-12 2000-09-29 Osaka Gas Co Ltd 加振器の管への取付治具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2878804B2 (ja) * 1989-09-19 1999-04-05 東京瓦斯株式会社 配管の異常監視装置
JPH05172689A (ja) * 1991-12-26 1993-07-09 Hitachi Ltd 漏洩検出器
JP2000266627A (ja) * 1999-03-12 2000-09-29 Osaka Gas Co Ltd 模擬的漏洩音の発生方法
JP2000266629A (ja) * 1999-03-12 2000-09-29 Osaka Gas Co Ltd 加振器の管への取付治具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021127754A1 (fr) 2019-12-27 2021-07-01 Companhia De Saneamento Básico Do Estado De São Paulo - Sabesp Procédé et banc de simulation de signaux de fuite dans un conduit
EP4083970A4 (fr) * 2019-12-27 2023-01-11 Companhia de Saneamento Básico do Estado De São Paulo - SABESP Procédé et banc de simulation de signaux de fuite dans un conduit

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