JPS641735B2 - - Google Patents
Info
- Publication number
- JPS641735B2 JPS641735B2 JP23479482A JP23479482A JPS641735B2 JP S641735 B2 JPS641735 B2 JP S641735B2 JP 23479482 A JP23479482 A JP 23479482A JP 23479482 A JP23479482 A JP 23479482A JP S641735 B2 JPS641735 B2 JP S641735B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- water leakage
- speaker
- circuit
- delay
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 230000001934 delay Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
本発明は水道の給配水管網等における漏水発生
箇所を発見するための所謂相関式漏水発見器を机
上で機能テスト、校正、自己チエツク等評価試験
するための漏水シミユレータ装置に関するもので
ある。[Detailed Description of the Invention] The present invention is a water leakage simulator for performing functional tests, calibrations, self-checks, etc. evaluation tests on a desk of a so-called correlation type water leakage detector for discovering water leakage points in a water supply and distribution pipe network, etc. It is related to the device.
相関式漏水発見器が実際に機能等を満足してい
るかを試験する場合、従来は、現実に敷設されて
いる水道管で漏水を起させて、試験測定してみる
以外に手段がなかつた。つまり現場での実際の漏
水発生でしか相関式漏水発見器の評価試験は行な
えなかつた。 In the past, when testing whether a correlation type water leak detector actually satisfies its functions, etc., the only way to do so was to cause a leak in an actual water pipe and perform a test measurement. In other words, evaluation tests of correlation type water leak detectors could only be carried out when actual water leaks occurred on site.
本発明は、上述したような事情から、机上でも
簡単に評価試験ができるようにした漏水シミユレ
ータ装置を提供することを目的とするもので、そ
の構成を説明すると、水道の給配水管網等におけ
る漏水音を擬似的に発生せしめる漏水擬似信号発
生器と、この発生器に接続する二系統のスピーカ
回路とを備えていて、一方のスピーカ回路は、漏
水擬似信号を遅延せしめてこの遅延量を漏水位置
とする１以上の遅延回路（特別な場合として遅延
が０でこれは漏水位置が中央の場合に相当する）
と、この遅延回路の遅延量（漏水位置）を切換え
るスイツチ回路と、このスイツチ回路に接続せし
めたスピーカ装置とよりなり、他方のスピーカ回
路は、漏水擬似信号を遅延せしめることなくその
まゝ音として出力するスピーカ装置よりなるもの
である。しかして前記両スピーカ装置の前面に
は、それぞれ機械振動的に分離された擬似管路が
設けられていて、各擬似管路に前記各スピーカ装
置からの出力音が振動として伝わるようにしてあ
る。この両擬似管路に伝わる振動を漏水発見器へ
の入力信号とするものである。 In view of the above-mentioned circumstances, the present invention aims to provide a water leakage simulator device that allows evaluation tests to be easily performed even on a desktop. It is equipped with a water leakage pseudo signal generator that generates a water leakage sound in a pseudo manner, and two speaker circuits connected to this generator.One of the speaker circuits delays the water leakage pseudo signal and detects water leakage by delaying the water leakage pseudo signal. one or more delay circuits with a position (a special case where the delay is 0, which corresponds to the case where the leak position is in the center)
It consists of a switch circuit that switches the delay amount (water leak position) of this delay circuit, and a speaker device connected to this switch circuit, and the other speaker circuit outputs the water leak pseudo signal as it is as a sound without delaying it. It consists of a speaker device that outputs output. The front surfaces of both speaker devices are provided with mechanically vibrationally separated pseudo conduits, so that the output sound from each of the speaker devices is transmitted as vibrations to each of the pseudo conduits. The vibrations transmitted to both pseudo pipes are used as input signals to the water leak detector.
以下本発明装置の一実施例を図面につき説明す
るに、先ず漏水発見器の原理について第１図を参
照しながら説明する。図中、２１は水道管、２２
は漏水発見器、２３，２４は漏水発見器２２に接
続するチヤージアンプ、２５，２６はチヤージア
ンプ２３，２４に接続する加速度ピツクアツプで
ある。Ｐは水道管２１の漏水位置で、この漏水位
置Ｐをはさむ管路上の２地点Ａ，Ｂに加速度ピツ
クアツプ２５，２６をセツトして漏水音を捕え、
両地点Ａ，Ｂに到達する漏水音の伝播時間差を相
互相関法により測定し、これと両地点間の距離Ｌ
及び漏水音の管路内伝播速度Ｃとから、漏水位置
Ｐまでの距離を算出するのがこの原理である。こ
こに漏水位置Ｐから一方の加速度ピツクアツプ２
５地点Ａまでの距離lAは、次式で表わされる。 An embodiment of the apparatus of the present invention will be described below with reference to the drawings. First, the principle of the water leakage detector will be explained with reference to FIG. 1. In the figure, 21 is a water pipe, 22
23 and 24 are charge amplifiers connected to the water leakage detector 22, and 25 and 26 are acceleration pickups connected to the charge amplifiers 23 and 24. P is the water leak position in the water pipe 21, and acceleration pickups 25 and 26 are set at two points A and B on the pipe that sandwich this water leak position P to capture the water leak sound.
The difference in propagation time of water leak sound reaching both points A and B is measured by the cross-correlation method, and this is calculated using the distance L between the two points.
This principle is to calculate the distance to the water leakage position P from the propagation speed C of water leakage sound in the pipe. Here, pick up one acceleration 2 from the water leakage position P.
The distance l A to 5 points A is expressed by the following formula.
lA＝１／２（Ｌ−Tm×Ｃ）
Tm：伝播時間差
尚、lBは漏水位置Ｐから他方の加速度ピツクア
ツプ２６地点Ｂまでの距離である。 l A = 1/2 (L - Tm x C) Tm: Propagation time difference In addition, l B is the distance from the water leak position P to the other acceleration pick-up 26 point B.
次に本発明に係る漏水シミユレータ装置につい
て説明するに、その基本的構成は第２図に示す通
りである。すなわち、第２図において、１は漏水
擬似信号発生器で、漏水音の成分を多量に持つ擬
似信号を発生するものである。２，３，４，５は
遅延回路で、これらはＮ個直列接続されていて、
各個の遅延回路には出力端子が設けてある。今、
漏水擬似信号発生器１より漏水擬似信号が出力さ
れると、この信号は二系統に別れ、一方はローパ
スフイルタ６を経てスピーカ７に到達し、このス
ピーカ７の出力音により擬似管路８を振動せし
め、かたや他方は遅延回路１−２、遅延回路２−
３、遅延回路３−４…を順に通つて、そのおのお
のの出力は漏水位置切換スイツチ９でどれかが選
択されてローパスフイルタ１０に入力され、スピ
ーカ１１を通つて擬似管路１２を振動せしめる。
こゝにおいて、それぞれ機械振動的に分離されて
設けられた両擬似管路８，１２は、各遅延回路
２，３…５によつて定まる遅延量つまり時間差を
もつて振動している。この時間差は実際の漏水音
の伝播時間差に対応するものである。従つてこの
とき、擬似管路８及び１２に前記加速度ピツクア
ツプ２５，２６をセツトして両方の検出信号をチ
ヤージアンプ２３，２４を通して漏水発見器２２
に入力すれば、遅延量に相当した位置が漏水位置
となつて漏水発見器２２に表示される。またこの
遅延量すなわち漏水位置はスイツチ９の切換操作
により任意に変化せしめ得る。 Next, the water leakage simulator device according to the present invention will be described. Its basic configuration is as shown in FIG. 2. That is, in FIG. 2, reference numeral 1 denotes a water leakage pseudo signal generator, which generates a pseudo signal having a large amount of water leakage sound components. 2, 3, 4, and 5 are delay circuits, and N pieces of these are connected in series.
Each delay circuit is provided with an output terminal. now,
When a water leakage pseudo signal is output from the water leakage pseudo signal generator 1, this signal is divided into two systems, one of which reaches the speaker 7 via the low-pass filter 6, and the sound output from the speaker 7 causes the pseudo pipe line 8 to vibrate. On the other hand, the delay circuit 1-2 and the delay circuit 2-
3. The outputs of the delay circuits 3-4 are sequentially passed through, one of which is selected by the water leakage position changeover switch 9, and input to the low-pass filter 10, which passes through the speaker 11 to vibrate the pseudo conduit 12.
Here, both the pseudo conduits 8 and 12, which are mechanically vibrationally separated from each other, vibrate with a delay amount, that is, a time difference, determined by each delay circuit 2, 3, . . . 5. This time difference corresponds to the actual propagation time difference of water leak sound. Therefore, at this time, the acceleration pickups 25 and 26 are set in the pseudo pipes 8 and 12, and both detection signals are passed through the charge amplifiers 23 and 24 to the leakage detector 22.
, the position corresponding to the amount of delay will be displayed on the water leak detector 22 as the water leak position. Further, this delay amount, that is, the water leakage position, can be arbitrarily changed by operating the switch 9.
尚、漏水位置切換スイツチ９回路に漏水位置デ
イスプレイ選択回路１３を接続して設け、この回
路１３の前記遅延回路２，３，４，５に対応する
出力を漏水位置として擬似管路８，１２間に設け
た漏水位置デイスプレイ１４上に表示できるよう
にしてある。これにより漏水発見器のより迅速確
実な評価試験が可能となる。 A water leak position display selection circuit 13 is connected to the water leak position changeover switch 9 circuit, and the outputs of this circuit 13 corresponding to the delay circuits 2, 3, 4, and 5 are set as the water leak positions between the pseudo pipes 8 and 12. The water leak location can be displayed on a water leak location display 14 provided at the location. This enables faster and more reliable evaluation tests of water leak detectors.
以上詳述したように、本発明によれば相関式漏
水発見器を机上で簡単に評価試験することができ
る。従つて本発明装置は相関式漏水発見器の保
守、サービス機器として、あるいは相関式漏水発
見器を理解するための教育機器として有効利用す
ることもできる利点がある。 As described in detail above, according to the present invention, a correlation type water leak detector can be easily evaluated and tested on a desk. Therefore, the device of the present invention has the advantage that it can be effectively used as a maintenance and service device for a correlation type water leak detector, or as an educational device for understanding the correlation type water leak detector.
第１図は漏水発見器の測定原理図、第２図は本
発明に係る漏水シミユレータ装置の基本的構成を
示したブロツク図である。
１……漏水擬似信号発生器、２，３，４，５…
…遅延回路、６，１０……ローパスフイルタ、
７，１１……スピーカ、８，１２……擬似管路、
９……漏水位置切換スイツチ、２１……水道管、
２２……漏水発見器、２３，２４……チヤージア
ンプ、２５，２６……加速度ピツクアツプ。
FIG. 1 is a diagram showing the measurement principle of a water leak detector, and FIG. 2 is a block diagram showing the basic configuration of a water leak simulator device according to the present invention. 1...Water leakage pseudo signal generator, 2, 3, 4, 5...
...Delay circuit, 6,10...Low pass filter,
7, 11... Speaker, 8, 12... Pseudo conduit,
9...Water leakage position switch, 21...Water pipe,
22... Water leak detector, 23, 24... Charge amplifier, 25, 26... Acceleration pickup.
Claims (1)
に発生せしめる漏水擬似信号発生器と、この発生
器に接続する二系統のスピーカ回路とを備え、一
方のスピーカ回路は、漏水擬似信号を遅延せしめ
てこの遅延量を漏水位置とする１以上の遅延回路
と、この遅延回路の遅延量（漏水位置）を切換え
るスイツチ回路と、このスイツチ回路に接続せし
めたスピーカ装置とよりなり、他方のスピーカ回
路は漏水擬似信号を遅延せしめることなく出力音
とするスピーカ装置よりなり、これら両スピーカ
装置に、機械振動的に分離された擬似管路をそれ
ぞれ設けて、各スピーカ装置からの出力音をそれ
ぞれの擬似管路に振動として伝え、この振動を漏
水発見器への入力信号とすることを特徴とした漏
水シミユレータ装置。1 Equipped with a water leakage pseudo signal generator that simulates water leakage sound in a water supply and distribution pipe network, etc., and two speaker circuits connected to this generator, one speaker circuit delays the water leakage pseudo signal. It consists of at least one delay circuit that sets this delay amount as the water leak position, a switch circuit that switches the delay amount (water leak position) of this delay circuit, and a speaker device connected to this switch circuit, and the other speaker circuit consists of a speaker device that outputs sound without delaying the water leakage pseudo signal, and each of these speaker devices is provided with a mechanically vibrationally separated pseudo conduit, so that the output sound from each speaker device is outputted as a sound without delay. A water leakage simulator device characterized by transmitting vibrations to a pipe and using the vibrations as an input signal to a water leakage detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23479482A JPS59120838A (en) | 1982-12-27 | 1982-12-27 | Water-leakage simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23479482A JPS59120838A (en) | 1982-12-27 | 1982-12-27 | Water-leakage simulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59120838A JPS59120838A (en) | 1984-07-12 |
| JPS641735B2 true JPS641735B2 (en) | 1989-01-12 |
Family
ID=16976490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23479482A Granted JPS59120838A (en) | 1982-12-27 | 1982-12-27 | Water-leakage simulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59120838A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2600163B1 (en) * | 1986-06-16 | 1989-12-22 | Metravib Sa | METHOD AND DEVICE FOR DETECTING AND LOCATING LEAKS IN A PIPELINE CONDUCTED BY A FLUID |
| US5134876A (en) * | 1991-07-08 | 1992-08-04 | The Babcock & Wilcox Company | Acoustic emission leak simulator |
| GB0128704D0 (en) * | 2001-11-30 | 2002-01-23 | Univ Manchester | Remote pipeline inspection |
| US10704740B2 (en) | 2015-11-05 | 2020-07-07 | Hifi Engineering Inc. | Method and system for simulating a leak in a pipeline, and an outlet for coupling a conduit to a pipeline |
| EP4083970A4 (en) * | 2019-12-27 | 2023-01-11 | Companhia de Saneamento Básico do Estado De São Paulo - SABESP | Method and simulation bench for leakage signals in lines |
-
1982
- 1982-12-27 JP JP23479482A patent/JPS59120838A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59120838A (en) | 1984-07-12 |
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