WO2015083551A1 - 漏水抑制装置、漏水抑制システム、および漏水抑制プログラム - Google Patents
漏水抑制装置、漏水抑制システム、および漏水抑制プログラム Download PDFInfo
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- WO2015083551A1 WO2015083551A1 PCT/JP2014/080752 JP2014080752W WO2015083551A1 WO 2015083551 A1 WO2015083551 A1 WO 2015083551A1 JP 2014080752 W JP2014080752 W JP 2014080752W WO 2015083551 A1 WO2015083551 A1 WO 2015083551A1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
Definitions
- Embodiments of the present invention relate to a water leakage suppression device, a water leakage suppression system, and a water leakage suppression program.
- a terminal pressure control device that determines a pressure at a pressure operation point based on a terminal pressure and a target value at a terminal position of a distribution pipe network that supplies water is known.
- the situation of the water distribution pipe network could not be sufficiently grasped.
- the problem to be solved by the present invention is to provide a water leakage suppression device, a water leakage suppression system, and a water leakage suppression program capable of suppressing water leakage from a water distribution pipeline network.
- the water leakage suppression device of the embodiment includes an acquisition unit, a pressure estimation unit, an extraction unit, and a control unit.
- An acquisition part acquires the information regarding the quantity of the water which flows in into the water distribution pipe network containing a some node, and the information regarding the quantity of the water which flows out from the said node.
- the pressure estimation unit estimates the water pressure at at least a part of the nodes in the distribution pipeline network based on the model information including the information acquired by the acquisition unit and the connection information of the nodes in the distribution pipeline network.
- the extraction unit extracts a minimum value of the water pressure from a plurality of water pressures including the water pressure estimated by the pressure estimation unit.
- a control part controls the adjustment part which can adjust the water pressure or flow volume of the water which flows in into the distribution pipe network based on the minimum value extracted by the extraction part.
- the image figure which illustrated the time change of the water pressure of the terminal when a pressure setting value is set up by conventional technology.
- the image figure which illustrated the time change of the water pressure of the point with the smallest water pressure when a pressure setting value is set by this embodiment.
- the figure which shows an example of a system configuration in case the water leak suppression apparatus 30 and the control apparatus 60 corresponded to the control part 40 are comprised as a different body.
- the figure which shows an example of a system configuration in case the water leak suppression apparatus 30 and the control apparatus 60 corresponded to the control part 40 are comprised as a different body.
- FIG. 1 is a diagram illustrating an example of a configuration of a water leakage suppression system 1 including a water leakage suppression device 30 according to the first embodiment.
- the water leakage suppression system 1 supplies water (purified water) stored in the distribution reservoir 10 to a home, a business office, or the like by a pump 20.
- a rotation speed sensor 22 is attached to the pump 20.
- the rotation speed sensor 22 outputs the rotation speed Npv of the pump 20 to the water leakage suppression device 30.
- the pressure of water pumped by the pump 20 is detected by the discharge pressure sensor 23.
- the discharge pressure sensor 23 outputs the discharge pressure P0pv to the water leakage suppression device 30.
- the flow rate of water that the pump 20 flows out is detected by the flow rate sensor 24.
- the flow sensor 24 outputs the water flow rate to the water leakage suppression device 30.
- a smart meter capable of detecting the amount of water used is attached to at least a part of homes, business establishments, and the like where water is supplied from each node.
- the smart meter transmits the amount of water used to the water leakage suppression device 30 at a frequency of once per minute or once per hour, for example.
- the information on the amount of water used is, for example, tabulated as information for each node in the water leakage suppression device 30 and treated as the amount of water flowing out from the node.
- a device that measures or tabulates the amount of water used at home or office for each node instead of providing a mechanism in which the information on the amount of water used is tabulated as information for each node in the water leakage suppression device 30, a device that measures or tabulates the amount of water used at home or office for each node. It may be provided.
- the configuration for acquiring information related to the amount of water flowing out from the node should be capable of collecting and providing information related to the amount of water flowing out from the node at least several times a day to the water leakage suppression device 30. preferable.
- the mechanism for collecting information on the amount of water flowing out from the node is not limited to the provision of a device that measures the amount of water used and automatically transmits it to the water leakage suppression device 30. May be read and input to the device, and a mechanism transmitted from the device to the water leakage suppression device 30 may be employed.
- FIG. 2 is a diagram exemplifying the relationship between nodes and homes and offices. In the figure, black circles indicate homes and offices. Further, it is preferable that the pressure sensor 26 is attached to a desired position of the water distribution pipe network PN. In the present embodiment, the pressure sensor 26 can be omitted.
- the water leakage suppression device 30 includes, for example, a processor such as a CPU (Central Processing Unit), a storage device such as a ROM (Read Only Memory) and a RAM (Random Access Memory), a flash memory, an HDD (Hard Disk Drive), and various communication devices ( Network card).
- the water leakage suppression device 30 includes a water usage acquisition unit 32, a nodal pressure estimation unit 34, a minimum pressure extraction unit 36, and a control unit 40.
- the nodal pressure estimation unit 34 includes an equation automatic construction unit 34A.
- the control unit 40 further includes a minimum pressure control unit 42, a discharge pressure control unit 44, and an actuator control unit 46.
- the water leakage suppression device 30 may include a display unit 50 such as an LCD (Liquid Crystal Display) or an organic EL (Electroluminescence) display device, and a display image generation unit 52.
- These functional units are software functional units that function when the CPU executes a program stored in the storage device, for example.
- the program may be stored in advance in the storage device (non-temporary storage medium) of the water leakage suppression device 30, or may be acquired from another computer via a network such as the Internet, or the program may be stored.
- the portable storage medium non-temporary storage medium
- Some or all of these functional units may be hardware functional units such as LSI (Large Scale Integration) and ASIC (Application Specific Integrated Circuit).
- the water leakage suppression device 30 stores the water distribution pipe network model information 38 in the storage device.
- FIG. 3 is a diagram showing an example of information stored as the water distribution pipe network model information 38.
- the distribution pipe network model information 38 in addition to the number of nodes and the number of pipes, information such as effective head [m], type, and installation altitude [m] for each node is associated with the node number. Is described.
- the type “1” indicates a node into which water is injected from the pump 20, and the type “ ⁇ 1” indicates a terminal node to which the pressure sensor 26 is attached.
- information such as the start and end node numbers, pipe lengths (lengths), pipe friction coefficients, and the like for each pipe is described in association with the pipe numbers.
- the water usage amount acquisition unit 32 aggregates the usage amount of water received from a smart meter attached to a home or business, and uses the water usage at each node (that is, the water flowing out from the node). Amount).
- the node pressure estimation unit 34 determines the pressure at each node ( Estimate the water pressure.
- the water pressure is referred to as water pressure as necessary.
- the nodal pressure estimation unit 34 estimates the pressures p1, p2,... Pn at the respective nodes by solving the ordinary differential equation (1) and the mass balance equation (2).
- i and j are node numbers
- vij is the flow velocity of water in the pipe line ij (the pipe line connecting the node i and the node j)
- Lij is the length [m] of the pipe line ij.
- Equation (2) A is a connection matrix shown in Equation (3), S is a pipeline area matrix shown in Equation (4), and V is a vector in which the flow velocities vij are arranged in order of pipeline numbers.
- the transposed vector [vij] T, f is the inflow vector shown in Equation (5), and Q is a vectorization of the amount of water used at each node.
- connection matrix A “1” of the matrix element indicates a node upstream of the water flow among the nodes at both ends of the pipe line indicated by the pipe number, and “ ⁇ 1” indicates the water flow. Indicates a downstream node for flow.
- Sij in the pipeline area matrix is the area (( ⁇ / 4) ⁇ Dij2) of the pipeline ij of the pipeline represented by the horizontal position.
- the value ⁇ in the inflow amount vector f is the flow rate input from the flow rate sensor 24.
- ASV-f-Q 0 (2)
- the equation automatic construction unit 34A of the nodal pressure estimation unit 34 when new distribution pipe network model information 38 is stored in the storage device, or when the distribution pipe network model information 38 is updated, the distribution pipe network model information 38.
- the nodal pressure estimator 34 uses the flow rate input from the flow sensor 24, the amount of water used for each node, and the pressure input from the pressure sensor 26 to the software generated by the automatic equation construction unit 34A. By inputting as a parameter, a process for solving the equations (1) and (2) is executed, and the pressure (water pressure) at each node is estimated.
- the pressure (water pressure) at each node is estimated only by inputting the above parameters. be able to.
- the water leakage suppression device 30 is customized to a specific water distribution network
- software including equations (1) and (2) corresponding to the water distribution network is prepared from the beginning, and the equation is automatically constructed. Generation of software by the unit 34A may be omitted. Further, the automatic equation construction unit 34A itself may be omitted.
- the minimum pressure extraction unit 36 may extract a substantial minimum value by performing a process of excluding abnormal values or the like instead of strictly extracting the minimum value.
- the minimum pressure control unit 42 of the control unit 40 is an appropriate discharge pressure target value of the pump 20 based on the minimum value min (pi) input from the minimum pressure extraction unit 36 and a preset pressure set value Psv. P0sv is calculated.
- the pressure set value Psv is, for example, from a node or a home or office by the structure illustrated in FIG. 2 with respect to a limit water pressure (for example, 200 kPa) for ejecting water from a faucet at a home or office. It is calculated
- the pressure set value Psv is set to, for example, about 15 m with an effective water head.
- the minimum pressure control unit 42 sets the minimum value min (pi) in advance by controlling the flow rate of the water flowing into the water distribution network PN instead of the water pressure of the water flowing into the water distribution network PN. Control may be made so as not to fall below the set pressure set value Psv.
- the discharge pressure control unit 44 performs a feedback calculation such as PID on the basis of the discharge pressure target value P0sv set by the minimum pressure control unit 42 and the discharge pressure P0pv input from the discharge pressure sensor 23. A target rotational speed Nsv of 20 is determined.
- the discharge pressure target value P0sv calculated by the minimum pressure control unit 42 is not automatically output to the discharge pressure control unit 44, but is displayed on the display unit 50 or the like so that a person can follow the displayed contents.
- the discharge pressure target value P0sv for the discharge pressure control unit 44 may be input.
- the discharge pressure target value P0sv may be a discrete value or discrete data (for example, high-medium-low, or ABC) instead of a continuous value.
- the calculation timing of the discharge pressure target value P0sv does not need to coincide with the information acquisition cycle or the control cycle of the pump 20, and may be every fixed time (for example, every hour).
- the actuator control unit 46 controls the energization of the pump 20 so that the rotation speed Npv of the pump 20 input from the rotation speed sensor 22 matches the target rotation speed Nsv, or accompanies the pump 20 (or alone). Control the actuator that opens and closes the valve.
- Equation (6) there is a relationship represented by Equation (6) between the pressure in the water distribution block and the amount of water leakage.
- L is the amount of water leakage [L / sec] at node i
- C is the water leakage coefficient.
- the water leakage coefficient is a coefficient depending on the pipe line extension and diameter regarding the node i, the shape of the water leakage hole, and the area.
- h is an effective head [m] of the node i
- ⁇ is an experimental multiplier (for example, 1.15).
- the water leakage suppression effect can be obtained by reducing the water pressure (effective water head) at each node as much as possible.
- L c ⁇ h ⁇ (6)
- the water pressure at each node is estimated by the above-described method, and control is performed so that the estimated minimum value of the pressure is equal to or higher than the pressure setting value. In comparison, it is less necessary to set the pressure set value higher with a margin. As a result, the water leakage suppression device 30 can set the pressure set value relatively low. For this reason, the water leakage suppression apparatus 30 can suppress the water pressure as the whole water distribution pipe network PN, and can reduce the amount of water leakage to the ground.
- FIG. 4 is an image diagram illustrating the time variation of the water pressure at the end when the pressure set value is set by the conventional technique
- FIG. 5 is the most water pressure when the pressure set value is set according to the present embodiment.
- the water leakage suppression device 30 performs control based on the node estimated to have the lowest water pressure, and thus reduces the water pressure of the entire distribution pipeline network PN, and leaks water into the ground. Can be suppressed.
- FIG. 6 is a diagram illustrating an example of a water distribution status display image generated by the display image generation unit 52.
- the amount of water used and the pressure estimated for each node are displayed superimposed on a simple map of the water distribution pipe network PN. By displaying such an image, the relationship between the amount of water used and the pressure in the water distribution network PN can be grasped at a glance.
- the display image generation unit 52 may visualize the water leakage suppression effect and display it on the display unit 50.
- the display image generation unit 52 may cause the display unit 50 to display a graph in which the discharge pressure of the pump 20 is plotted on the horizontal axis and the minimum value for each discharge pressure value is plotted on the vertical axis.
- the flow rate can be monitored using the detection value of the flow rate sensor 24, for example.
- FIG. 7 is a diagram illustrating the relationship between the discharge pressure of the pump 20 and the minimum flow rate detected at night (night minimum flow rate).
- the nighttime minimum flow rate may show different flow rates even at the same discharge pressure. This variation is considered to be caused by variation in the actual amount of water used.
- the water leakage suppression effect in order to visualize the water leakage suppression effect, it is effective to extract and display the minimum value for each discharge pressure from the night minimum flow rate.
- the data within the broken line in FIG. 7 corresponds to the minimum value for each discharge pressure in the night minimum flow rate.
- FIG. 8 is a diagram illustrating an example of a configuration of the water leakage suppression system 1 including the water leakage suppression device 30 according to the second embodiment.
- the water leakage suppression device 30 according to the second embodiment includes a water usage pattern creation unit 33 and a water usage database 39 in addition to the configuration of the first embodiment.
- a smart meter attached to a home or office is measured at the same frequency as the first embodiment (for example, once a minute or once an hour). However, it is possible to cope with the case where information is transmitted less frequently than measurement (for example, about once a day).
- the water usage amount acquisition unit 32 writes the water usage amount for each node, for example, for each day of the week or for each time zone.
- the water usage pattern creation unit 33 associates, for example, the flow rate detected by the flow sensor 24, the water pressure detected by the pressure sensor 26, and the water usage with the water usage database 39.
- the correlation model is constructed by storing in Then, the water usage pattern creation unit 33 inputs the flow rate detected by the flow sensor 24 and the water pressure detected by the pressure sensor 26 as parameters for the correlation model, thereby using the water for each node at that time. The amount is estimated and output to the nodal pressure estimation unit 34.
- the correlation model may be a multiple regression model with flow rate, pressure, and time as explanatory variables, an ARMA (Auto Regressive Moving Average) model, an ARIMA (Auto Regressive Integrated Moving Average) model, or the like.
- the water usage pattern creation unit 33 estimates the water usage at each node at a point in time by a simple method of multiplying the normalized water usage pattern of the previous day by the current injection flow rate. May be. Since the subsequent processing is the same as that of the first embodiment, description thereof is omitted.
- information on the amount of water flowing into the distribution pipeline network and information on the amount of water flowing out from nodes in the distribution pipeline network are obtained, and these information, It is possible to estimate the water pressure at the nodes in the distribution pipe network based on the distribution pipe network model information including the connection information, and to adjust the water pressure flowing into the distribution pipe network based on the minimum estimated value. Since the adjustment unit is controlled, water leakage from the water distribution pipeline network can be suppressed.
- the water leakage suppression device 30 includes the control unit 40, but is configured separately from the control unit 40, and the control target values such as the minimum pressure min (pi) and the discharge pressure P0pv correspond to the control unit 40. It may be transmitted to a device that performs the above.
- FIGS. 9 and 10 are diagrams illustrating an example of a system configuration in the case where the water leakage suppression device 30 and the control device 60 corresponding to the control unit 40 are configured as separate bodies. In these drawings, the same reference numerals as those in the above embodiment have the same functions as those in the above embodiment.
- the water leakage suppression device 30 may transmit the minimum pressure min (pi) to the control device 60 via a network NW such as the Internet. As shown in FIG.
- the 30 may transmit the discharge pressure P0pv to the control device 60 via a network NW such as the Internet.
- NW such as the Internet.
- the minimum pressure min (pi) and the discharge pressure P0pv may be discrete values or discrete data (for example, high-medium-low or ABC) instead of continuous values.
- the minimum pressure min (pi) and the discharge pressure P0pv received from the water leakage suppression device 30 are not automatically input to the function unit of the control device 60, but are displayed on the display device on the control device 60 side. However, the control target may be input to the control device 60.
- the interface portion to which the detection values of the flow sensor 24 and the pressure sensor 26 and the water usage acquisition unit 32 in the water leakage suppression device 30 are input are examples of the “acquisition unit”.
- the estimation unit 34 is an example of a “pressure estimation unit”
- the minimum pressure extraction unit 36 is an example of an “extraction unit”
- the water usage pattern creation unit 33 is an example of a “water amount estimation unit”.
- the discharge pressure target value P0sv is an example of the “control target value”.
Abstract
Description
図1は、第1の実施形態に係る漏水抑制装置30を含む漏水抑制システム1の構成の一例を示す図である。漏水抑制システム1は、配水池10に蓄えられた水(浄水)を、ポンプ20によって家庭や事業所等に供給する。ポンプ20には、回転数センサ22が取り付けられる。回転数センサ22は、ポンプ20の回転数Npvを漏水抑制装置30に出力する。また、ポンプ20が圧送する水の圧力は、吐出圧力センサ23によって検出される。吐出圧力センサ23は、吐出圧力P0pvを漏水抑制装置30に出力する。また、ポンプ20が流出させる水の流量は、流量センサ24によって検出される。流量センサ24は、水の流量を漏水抑制装置30に出力する。
ここで、従来の技術として、配水管路網内で最も水圧が低くなると想定された固定地点(末端)の水圧を測定し、末端の水圧が圧力設定値以上となるように制御する技術が知られている。末端は、配水管路網の入り口から遠方であったり、或いは標高が高いことによって水圧が低くなると想定された固定地点である。しかしながら、この「末端」の水圧が、必ずしも最も低くなるとは限らない。現実の配水管路網では、水需要の偏りなどに起因して、最も水圧の低い地点が、時間の経過に応じて変動する場合がある。このため、固定地点における水圧が圧力設定値以上となるように制御する場合、より水圧が低い地点が生じ得ることを想定して、圧力設定値を高めに設定せざるを得ない場合がある。圧力設定値を高めに設定すると、配水管路網全体としての水圧が上昇するため、地中への漏水量が多くなってしまう。
L=c・hκ ‥(6)
表示画像生成部52には、漏水抑制装置30内で参照可能な各種情報が入力される。表示画像生成部52は、例えば、各節点における水の使用量と、推定された圧力と比較可能な態様で表示する表示画面を生成し、表示部に表示させる。図6は、表示画像生成部52が生成する配水状況表示画像の一例を示す図である。この配水状況表示画像では、節点毎に、水の使用量と推定された圧力が、配水管路網PNの簡易的な地図に重畳して表示される。このような画像を表示することで、配水管路網PNにおける水の使用量と圧力の関係を一目で把握させることができる。
以上説明した本実施形態の漏水抑制装置30、およびこれを利用した漏水抑制システムによれば、配水管路網PNに流入する水の量に関する情報(流量センサ24によって検出される流量)と、配水管路網PNにおける節点から流出する水の量に関する情報(水使用量取得部32により取得される水の使用量)を取得し、これらの情報と、節点の接続情報を含む配水管路網モデル情報38とに基づいて、配水管路網PNにおける節点の水圧を推定し(圧力センサ26が取り付けられている節点については推定不要)、推定値の最小値に基づいて配水管路網PNに流入する水の水圧を調整可能な調整部(ポンプ20)を制御するため、配水管路網PNからの漏水を抑制することができる。
図8は、第2の実施形態に係る漏水抑制装置30を含む漏水抑制システム1の構成の一例を示す図である。第2の実施形態に係る漏水抑制装置30は、第1の実施形態の構成に加えて、水使用量パターン作成部33と、水使用量データベース39とを備える。第2の実施形態の漏水抑制装置30は、家庭や事業所等に取り付けられたスマートメータが、第1の実施形態と同様の頻度(例えば1分間に1回や1時間に1回)で計測を行うが、情報の送信を、計測よりも低頻度に(例えば1日1回程度)行う場合に対応することができる。
以上説明した本実施形態の漏水抑制装置30、およびこれを利用した漏水抑制システムによれば、第1の実施形態と同様、配水管路網PNからの漏水を抑制することができる。また、第1の実施形態と比較すると、節点毎の水の使用量を取得する頻度が低い場合にも、対応することができる。
Claims (15)
- 複数の節点を含む配水管路網に流入する水の量に関する情報と、前記節点から流出する水の量に関する情報とを取得する取得部と、
前記取得部により取得された情報、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定する圧力推定部と、
前記圧力推定部により推定された水圧を含む複数の水圧の中から水圧の最小値を抽出する抽出部と、
前記抽出部により抽出された最小値に基づいて、前記配水管路網に流入する水の水圧または流量を調整可能な調整部を制御する制御部と、
を備える漏水抑制装置。 - 複数の節点を含む配水管路網に流入する水の量に関する情報と、前記節点から流出する水の量に関する情報とを取得する取得部と、
前記取得部によって過去に取得された前記節点から流出する水の量に関する情報に基づいて、現在の前記節点から流出する水の量を推定する水量推定部と、
前記取得部により取得された情報、前記水量推定部により推定された水の量、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定する圧力推定部と、
前記圧力推定部により推定された水圧を含む複数の水圧の中から水圧の最小値を抽出する抽出部と、
前記抽出部により抽出された最小値に基づいて、前記配水管路網に流入する水の水圧または流量を調整可能な調整部を制御する制御部と、
を備える漏水抑制装置。 - 複数の節点を含む配水管路網に流入する水の量に関する情報、前記節点から流出する水の量に関する情報、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定する圧力推定部と、
前記圧力推定部により推定された水圧を含む複数の水圧の中から水圧の最小値を抽出する抽出部と、を備え、
前記抽出部により抽出された最小値、または前記抽出部により抽出された最小値に基づく制御目標値を出力する、
漏水抑制装置。 - 前記取得部は、前記配水管路網における所定の節点における水圧を更に取得する、
請求項1から3のうちいずれか1記載の漏水抑制装置。 - 前記圧力推定部は、節点間の圧力差と節点間を流れる流量との関係を示す方程式と、物質収支の式とを連立的に解くことで、前記配水管路網における節点の少なくとも一部における水圧を推定する、
請求項1から3のうちいずれか1項記載の漏水抑制装置。 - 前記圧力推定部は、前記モデル情報に基づいて、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを含むソフトウェアを生成し、前記生成したソフトウェアに対して前記取得部により取得された情報を入力することで、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを解き、前記配水管路網における節点の少なくとも一部における水圧を推定する、
請求項5記載の漏水抑制装置。 - 配水管路網に流入する水の水圧または流量を調整可能な調整部を制御する制御装置と、漏水抑制装置とを備える漏水抑制システムであって、
前記漏水抑制装置は、
複数の節点を含む配水管路網に流入する水の量に関する情報と、前記節点から流出する水の量に関する情報とを取得する取得部と、
前記取得部により取得された情報、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定する圧力推定部と、
前記圧力推定部により推定された水圧を含む複数の水圧の中から水圧の最小値を抽出する抽出部と、を備え、
前記抽出部により抽出された最小値、または前記抽出部により抽出された最小値に基づく制御目標値を、前記制御装置に送信する、
漏水抑制システム。 - 前記取得部は、前記配水管路網における所定の節点における水圧を更に取得する、
請求項7記載の漏水抑制システム。 - 前記圧力推定部は、節点間の圧力差と節点間を流れる流量との関係を示す方程式と、物質収支の式とを連立的に解くことで、前記配水管路網における節点の少なくとも一部における水圧を推定する、
請求項7または8記載の漏水抑制システム。 - 前記圧力推定部は、前記モデル情報に基づいて、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを含むソフトウェアを生成し、前記生成したソフトウェアに対して前記取得部により取得された情報を入力することで、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを解き、前記配水管路網における節点の少なくとも一部における水圧を推定する、
請求項9記載の漏水抑制システム。 - コンピュータに、
複数の節点を含む配水管路網に流入する水の量に関する情報、前記節点から流出する水の量に関する情報、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定させ、
前記推定された水圧を含む複数の水圧の中から水圧の最小値を抽出させ、
前記抽出された最小値に基づいて、前記配水管路網に流入する水の水圧または流量を調整可能な調整部を制御させる、
漏水抑制プログラム。 - コンピュータに、
複数の節点を含む配水管路網に流入する水の量に関する情報、前記節点から流出する水の量に関する情報、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定させ、
前記推定された水圧を含む複数の水圧の中から水圧の最小値を抽出させ、
前記抽出部により抽出された最小値、または前記抽出された最小値に基づく制御目標値を出力させる、
漏水抑制プログラム。 - 前記推定させる処理において、前記コンピュータに、複数の節点を含む配水管路網に流入する水の量に関する情報、前記節点から流出する水の量に関する情報、前記配水管路網における所定の節点における水圧、および前記配水管路網における節点の接続情報を含むモデル情報に基づいて、前記配水管路網における節点の少なくとも一部における水圧を推定させる、
請求項11または12に記載の漏水抑制プログラム。 - 前記推定させる処理において、前記コンピュータに、節点間の圧力差と節点間を流れる流量との関係を示す方程式と、物質収支の式とを連立的に解くことで、前記配水管路網における節点の少なくとも一部における水圧を推定させる、
請求項11または12に記載の漏水抑制プログラム。 - 前記推定させる処理において、前記コンピュータに、前記モデル情報に対応する、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを含むソフトウェアを生成させ、前記生成させたソフトウェアに対して前記取得部により取得された情報を入力することで、前記節点間の圧力差と前記節点間を流れる流量との関係を示す方程式と、前記物質収支の式とを解き、前記配水管路網における節点の少なくとも一部における水圧を推定させる、
請求項14記載の漏水抑制プログラム。
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