JPH10252998A - Tap water distribution control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriate regulate the flow rate and control the pressure, and reduce the burden on an operator. SOLUTION: A demand estimating means 1 estimates the demand of the tap water to be supplied to each consumer. A flow rate regulating means 10 regulates the flow rate of the tap water to be supplied from a plurality of water sources based on the above-mentioned estimated demand value, and pressure control means 11 controls the pressure of the tap water to be supplied to each consumer in the prescribed range based on the regulated flow rate. A demand estimation correcting means 22 corrects the estimated demand for the day. A schedule control means 12 opens a valve in a time zone when the demand is rapidly increased in the morning and in the evening, and closes the valve in the time zone when the demand is rapidly decreased at night to control the pressure of the tap water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply system for supplying water supplied from a plurality of water sources to a network of water distribution pipes and valves (hereinafter collectively referred to as a water distribution network).
And a water supply distribution control system for controlling the amount and pressure of water supplied to a large number of customers through the water supply system.

[0002]

2. Description of the Related Art Water supplied from a water source is connected to each pipe of the water distribution network by securing a water pressure that does not cause water interruption at a low water pressure area such as at the end of a water distribution network or a hill. It is necessary to supply water supply to customers without interruption. That is, the water pressure in each pipe of the water distribution network is monitored, and an appropriate water pressure corresponding to each pipe is applied so that the water pressure in each customer finally reaches a water pressure that can secure water supply in a low water pressure area. It is necessary to control each pressure reducing valve inserted in each pipe.

FIG. 13 is a block diagram showing the configuration of a conventional water supply distribution control system based on the configuration shown in, for example, JP-A-2-89900. FIG.
, 1 is a demand forecasting means for predicting a demand amount of water supply, 2 is a valve operation planning means for operating a pressure reducing valve (not shown) based on the demand forecast, and 3 is a pressure reducing valve at each time according to the operation plan. Control / monitoring means for deciding, controlling and monitoring the control amount relating to the control means, 4 is a mode determining means for determining the mode of operation, 5 is a distribution pipe network output means for sending a control output to a distribution pipe network (not shown). , 6a, 6b are guidance display means for displaying driving pattern guidance,
7 is an SV setting means for setting the control amount of the pressure reducing valve, 8 is a manual operating means for manually operating the pressure reducing valve, and 9 is a pattern setting means for setting a daily operation pattern. Note that S
V is a set value for an observation value in PID control, and an operation target value can be calculated from a comparison with the observation value.

Next, the operation will be described. First, at the beginning of the day, the demand forecasting means 1 predicts the hourly demand for water supply on the day. This is to store the actual value of the past demand and predict today's demand from that data. It is considered something. The pattern matching means that a factor such as weather on the day is matched with a factor such as past weather to extract a daily pattern of demand.

Next, an operation plan for the pressure reducing valve control on the day is created by the valve operation planning means 2 from the past valve operation result data. The operator confirms the valve operation plan on the guidance display means 6a, and manually sets a daily operation pattern from the pattern setting means 9 with reference to the contents. The control amount according to the set operation pattern is output to the pressure reducing valve through the distribution pipe network output means 5. Further, the control amount at each time is determined by the control / monitoring unit 3 based on the valve operation plan planned by the valve operation planning unit 2, and if the mode determination unit 4 is in the automatic mode, the control amount is Water distribution network output means 5
Through the pressure reducing valve. When the mode determination unit 4 is in the manual mode, the control amount at that time is displayed through the guidance display unit 6b, and the operator refers to the control amount in S.
The control amount is set by the V setting means 7, and the control amount is output to the pressure reducing valve through the water distribution network output means 5. The pressure reducing valve can also be operated completely manually through the manual operation means 8.

[0006]

Since the conventional water supply distribution control system is configured as described above,
There are the following problems. First, since the demand forecast is performed only by the operation pattern matching, it is difficult to further improve the forecast accuracy. Second, in the case of a large-scale pipe network with multiple water sources, it is necessary to secure a necessary and sufficient flow through the pipe network by providing a limited amount of water. It is difficult just to operate the valve. Third, when performing pressure control, the control of the fixed range of the terminal pressure is not sufficient only by determining the control amount based on the demand forecast, and there is a possibility that the demand of the customer cannot be satisfied or water leakage increases. . Fourth, a knowledge base that incorporates the intuition and knowledge of the operator is to be created, but there is no mechanism that allows the operator to maintain the contents themselves, and the knowledge and intuition that changes over time can be quickly obtained. Difficult to respond to. Fifth, since only one mode can be selected, it is necessary to switch the control in accordance with the temporal characteristics of the pipe network. If the automatic mode cannot be performed accurately, the burden on the operator cannot be reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in a large-scale pipe network to which clean water is supplied from a plurality of water sources, flow rate adjustment and pressure control can be appropriately performed. It is an object of the present invention to provide a water supply distribution control system that can reduce the burden on members.

[0008]

According to a first aspect of the present invention, there is provided a demand predicting means for predicting a demand for water supplied to each customer.
And a flow rate adjusting means 10 for adjusting the flow rate of clean water supplied from a plurality of water sources based on the predicted demand, and the pressure of clean water supplied to each of the customers to the adjusted flow rate And pressure control means 11 for controlling the pressure in a predetermined range based on the pressure.

According to a second aspect of the present invention, there is provided a demand forecasting means for predicting a demand amount of water supplied to each customer, and a flow rate of water supplied from a plurality of water sources is reduced to the predicted demand amount. Flow rate adjusting means 10 for adjusting the pressure based on the adjusted flow rate, and pressure control means 11 for controlling the pressure of clean water supplied to each customer based on the adjusted flow rate. The present invention is characterized by including a demand forecasting correction means 22 for correcting the demand forecasting amount on the day based on the difference between the demand amount on the day and the actual water distribution amount in the past on the day.

[0010] In the third invention, the demand forecasting means 1 in the first or the second invention, in addition to factors such as the forecast day, past weather, maximum temperature, day of the week, consecutive holidays, etc. The present invention is also characterized in that the demand is predicted by pattern matching from the data of the past actual water distribution using the water distribution variation indicating the rise of the actual demand.

In the fourth invention, the flow rate adjusting means 10 according to the first or second invention is a demand forecast which has been forecasted and corrected by the demand forecasting means 1 or the demand forecasting means 1 and the demand forecast correcting means 22. It is characterized in that a water distribution plan is planned systematically in accordance with the planned supply amount of clean water that can be purified by a plurality of water sources. Water supply distribution control system.

In the fifth invention, the pressure control means 11 in the first or second invention controls the pressure by grouping a plurality of valves and balancing the relative opening of the valves. It is a feature.

A sixth aspect of the present invention is characterized in that an expert system 23a on a computer for adjusting the flow rate of clean water based on the flow rate adjustment knowledge base 24 is provided.

According to a seventh aspect of the present invention, there is provided a computer-based expert system 23b for controlling water supply pressure based on the pressure control knowledge base 25.

An eighth aspect of the present invention relates to the expert system 23
a and 23b are provided with a knowledge-based rule editor 26.

A ninth invention is an expert system 23.
a, 23b, a verification tool 27 using online data
It is characterized by having.

According to a tenth aspect of the present invention, there is provided a schedule control means 12 for controlling the pressure of clean water by opening and closing a valve in a schedule according to a time zone in which the demand increases or decreases.

In the eleventh invention, the schedule control means 12 opens the valve during the time when the demand in the morning and evening sharply increases, and closes the valve during the time when the demand during the night sharply decreases. This is characterized in that the pressure is controlled.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the water supply distribution control system according to the first embodiment. In FIG. 1, 16 is a factor setting means for setting factors such as expected weather and expected maximum temperature, 17 is a past actual water distribution amount, 21 is a past actual valve opening, and 14 is a factor setting means 16.
The pattern matching means for selecting a plurality of water distribution amount data based on the factors set in the above, the past actual water distribution amount 17 and the past actual valve opening 21, and a plurality of distribution water units 20 selected by the pattern matching means 14. From the water volume data,
For example, water distribution data selecting means for selecting water distribution data at 6 to 9 o'clock on the day, 1 is a demand prediction means for predicting water demand based on water distribution data selected by the water distribution data selecting means 20, 10 is a flow rate adjusting means for adjusting the flow rate of clean water based on the demand forecast result from the demand forecasting means 1 and the water distribution data from the pattern matching means 14, and 6a displays guidance such as information on flow rate adjustment. It is guidance display means. 18 is the actual pressure of the water supply and the actual valve opening of the valve, 19 is the valve opening balance data, and 15 is the valve opening setting based on the actual pressure / actual valve opening 18 and the opening balance data 19. The opening degree setting means 11 performs pressure control for controlling the pressure of clean water to a certain range based on the data of the flow rate adjusted by the flow rate adjusting means 10 and the data of the opening degree set by the opening degree setting means 15. means,
Reference numeral 6b denotes guidance display means for displaying guidance such as information on pressure control. Reference numeral 13 denotes schedule control data indicating a schedule of valve movement, and reference numeral 12 denotes a valve that opens based on the schedule control data 13 during a time period in which the demand in the morning and evening sharply increases, and the demand in the night sharply decreases. Schedule control means for closing the valve during the time period and controlling the pressure of clean water, 3 is a flow rate control signal from the flow rate control means 10, a pressure control signal from the pressure control means 11, and a pressure control signal from the schedule control means 12. Control and monitoring means for controlling and monitoring the water distribution network on the basis of the above, and manual operating means for manually operating the control and monitoring means 3;
Is a distribution pipe network output means for controlling an actual distribution pipe network by a control signal from the control monitoring means 3. Although the guidance display means 6a and the guidance display means 6b are separately described, they are realized by one display device.

Next, the operation of the first embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. Pattern matching means 14
Inputs the day of the week and holidays from a calendar provided in advance in the calculator, and performs pattern matching including past factor data (data indicating the past weather, maximum temperature, day of the week, holidays, etc.) Then, a plurality of water distribution amount data having similar factors are selected from the past actual water distribution amount 17. Of the plurality of selected water distribution data, the past water distribution data having a curve (water distribution change) closest to the trend of the actual water distribution at, for example, 6:00 to 9:00 in the morning of the day is calculated as the water distribution data. The selection is made by the selection means 20. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. The demand forecasting means 1 predicts the demand based on the past actual water distribution amount data selected by the water distribution amount data selecting means 20. The flow rate adjusting means 10 uses the same factors as the above-described demand amount prediction result, and selects the appropriate amount of actual water distribution amount data from the past actual water distribution amount 17 using the pattern matching means 14 for the water distribution amount for each water source. . Next, the flow rate adjusting means 10 selects, by the least-square method, a water distribution amount which is the closest to the planned value of the supply amount of each water source today, and displays the actual valve opening degree corresponding to that day together with the demand prediction result and the guidance display means 6a. View through This flow rate adjusting means 10
With respect to the demand forecast amount predicted by the demand forecasting means 1, a water distribution plan is planned according to a plan value of a supply amount of clean water that can be purified by a plurality of water sources.

Next, pressure control is performed. In this method, the entire distribution network is divided into sections along the flow of water for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, it is determined which valve opening is present in the setting of the opening balance data 19, and which valve should be opened or closed to go to the pressure increasing side or the pressure decreasing side. Also, what is the opening degree? The pressure control means 11 inputs the opening degree from the opening degree setting means 15,
It is displayed to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand. At dawn, the human activity starts, the demand increases, and the maximum demand (peak) of the day is reached. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, the pressure control means 11, and the schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the first embodiment, the demand is forecasted by pattern matching, for example, the selection is performed based on the water distribution amount at 6 to 9 o'clock on the day. Therefore, the demand forecast can be performed more accurately than before. Since the control based on the opening degree balance data 19 is employed for the pressure control, finer pressure control is possible. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing the configuration of the water supply distribution control system according to the second embodiment. 2, components corresponding to those shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 2, reference numeral 22 denotes a demand forecast correcting means for correcting the demand forecast quantity of the day based on the difference between the predicted demand quantity of the day predicted by the demand forecasting means 1 and the past actual water distribution quantity of the day.

Next, the operation of the second embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs the day of the week and holidays from a calendar provided in advance in the computer, performs pattern matching including past factor data, and calculates the water distribution amount having the same factor from the past actual water distribution amount 17. Select data. In this case, the latest data closest to the day is set as the basic data of the demand forecast amount. According to the water distribution data selected above, for example,
After 0:00, the actual water distribution amount of the day is known, so the demand forecast correcting means 22 compares the demand forecast amount by the demand forecasting means 1 with the actual water distribution amount, and increases or decreases the demand forecast amount by the ratio, This is set as the predicted correction amount. Demand forecasting means 1
Based on the forecast correction amount, the demand forecast amount at that time on the day is corrected. Using the same factors as the demand prediction result, the flow rate adjusting means 10 uses the pattern matching means 14 to select appropriate water distribution amount data from the past water distribution amount 17 using the pattern matching means 14 for the water distribution amount for each water source. Next, the flow rate adjusting means 1
A value of 0 selects a water source whose supply rate is the closest to the planned value of today's supply by the least squares method, and displays the actual valve opening corresponding to that day together with the demand forecast result through the guidance display means 6a. The flow rate adjusting unit 10 plans the demand forecast amount predicted and corrected by the demand forecasting unit 1 and the demand forecast correcting unit 22 in accordance with the planned supply amount of clean water that can be purified by a plurality of water sources. Make a water distribution plan.

Next, pressure control is performed. This is performed by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, it is determined which valve opening is present in the setting of the opening balance data 19, and which valve should be opened or closed to go to the pressure increasing side or the pressure decreasing side. What is the degree of opening? The pressure control means 11 inputs the opening degree from the opening degree setting means 15 and displays it to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases, and the demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 executes the control from the output mechanism 5 for the water distribution network to the actual water distribution network.

According to the second embodiment, since the demand is forecasted by pattern matching, the correction based on the actual water distribution on the day is performed. Since the control based on the balance data 19 is employed, finer pressure control is possible. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 3 Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing a configuration of a water supply distribution control system according to the third embodiment. The third embodiment includes the water distribution amount data selecting means 20 in the first embodiment and the demand prediction correcting means 22 in the second embodiment, and the other configuration is the same, and therefore the description is omitted.

Next, the operation of the third embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and obtains a plurality of patterns having similar factors from the past actual water distribution 17. Select water distribution data. Of the plurality of selected water distribution data, for example, 6-9
The water distribution data selection means 20 selects data of the past water distribution having the curve closest to the tendency of the actual water distribution at the time. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. According to the selected past actual water distribution amount data, for example, after 10:00 am, the actual water distribution amount of the day is known.
The demand prediction amount by the demand prediction means 1 is compared with the actual water distribution amount, and the difference is used to increase or decrease the demand prediction amount, and this is used as a prediction correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount. Using the same factors as the demand prediction result, the flow rate adjusting means 10 uses the pattern matching means 14 to select appropriate water distribution amount data from the past water distribution amount 17 using the pattern matching means 14 for the water distribution amount for each water source. Next, the flow rate adjusting means 10 selects, by the least squares method, the one with the closest ratio to the planned value of the supply amount of each water source today, and determines the actual valve opening corresponding to the day together with the demand prediction result through the guidance display means 6a. indicate.

Next, pressure control is performed. This is done by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, it is determined which valve opening is present in the setting of the opening balance data 19, and which valve should be opened or closed to go to the pressure increasing side or the pressure decreasing side. What is the degree of opening? The pressure control means 11 inputs the opening degree from the opening degree setting means 15 and displays it to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases and the demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

Control commands from the flow control means 10, pressure control means 11, and schedule control means 12 are executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

In accordance with the above procedure, the control monitoring means 3 executes control from the output mechanism 5 for the distribution network to the actual distribution network.

According to the third embodiment, in order to predict demand by pattern matching, selection based on the amount of water distribution at, for example, 6 to 9 o'clock on the day and correction based on the actual amount of water distribution on the day are performed. Prediction can be performed with high accuracy, and since the control based on the opening balance data 19 is employed for the pressure control, finer pressure control can be performed. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 4 FIG. Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram showing a configuration of a water supply distribution control system according to the fourth embodiment. 4, components corresponding to the components shown in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted. In FIG. 4, reference numeral 23a denotes an expert system on a computer for controlling the flow rate adjusting means 10 based on the flow rate adjustment knowledge base 24 to adjust the flow rate. 26 is a rule editor of the flow control knowledge base 24, 27 is a verification tool based on online data, and 28 is a simulation result display means for displaying a simulation result by the verification tool 27. The simulation result display means 28 can be realized by one display device together with the guidance display means 6a and 6b. Rule Editor 26
The verification tool 27 is provided in the expert system 23a.

Next, the operation of the fourth embodiment will be described. The operator sets factor data such as the expected weather and expected maximum temperature of the day at 9:00 each morning, which is the morning change time, in the factor setting means 1.
Input from 6. The pattern matching means 14 inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and obtains a plurality of patterns having similar factors from the past actual water distribution 17. Select water distribution data. Among the plurality of selected water distribution amount data, the past water distribution amount data having a curve closest to the tendency of the actual water distribution amount, for example, from 6 to 9 o'clock in the morning, is selected by the water distribution amount data selecting means 20. . In this case, the difference between the actual water distribution amount for each hour and the selected past actual water distribution amount is compared and determined by the least squares method.

Here, the operator's past experience and intuition regarding the planned water intake determined from the pattern of the demand according to the season and weather of the day and the situation of a plurality of water sources are preset as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 selects the valve opening degree of the flow rate adjusting valve at that time through the expert system 23a using the flow rate adjusting knowledge base 24, and displays the selected valve opening degree through the guidance display means 6 together with the demand prediction result. By using the expert system 23a, the flow adjustment knowledge base 24 can easily change the knowledge through the rule editor 26 even by an operator who is unfamiliar with the computer, and before applying the changed knowledge to actual control, Verification tool 27
Through the computer, a simulation can be performed on the computer, and the result of the simulation can be confirmed through the simulation result display means 28. In general, the expert system expresses the knowledge of a skilled operator as a rule in the form of if-then-. A general method is used as a so-called production rule system that operates and repeats this to reach a conclusion.

Next, pressure control is carried out. This is done by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, the current position in the setting of the opening balance data 19 is determined to find out which valve should be opened or closed in order to go up or down. Ask for some degree of opening. Pressure control means 1
Numeral 1 inputs the opening from the opening setting means 15 and displays it to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand. At dawn, the human activity starts, the demand increases, and the maximum demand (peak) of the day is reached. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator has confirmed all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the fourth embodiment, the demand is predicted by pattern matching, for example, the selection based on the amount of water distribution at 6 to 9 o'clock on the day is performed. Since the control by the expert system 23a is used for the adjustment and the control based on the opening balance data is used for the pressure control 11, finer flow rate adjustment and pressure control can be performed. In addition, the expert system can easily change the knowledge even by operators unfamiliar with the computer, and before applying the changed knowledge to actual control, it can simulate on the computer and check the result of the content, so it will take time Can respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 5 Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a block diagram showing the configuration of the water supply distribution control system according to the fifth embodiment. 5, components corresponding to those shown in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted. In the fifth embodiment, the expert system 23a described with reference to FIG.
It has.

Next, the operation of the fifth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs the day of the week and holidays from a calendar provided in advance in the computer, performs pattern matching including past factor data, and calculates the water distribution amount having the same factor from the past actual water distribution amount 17. Select data. In this case, the latest data closest to the day is used as basic data for demand forecast.
For example, since 10:00 a.m., the actual water distribution amount of the day can be known from the water distribution amount data selected above, the demand prediction correcting means 22 compares the demand prediction amount by the demand prediction means 1 with the actual water distribution amount, The difference is used to increase or decrease the demand forecast amount, and this is used as the forecast correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount.

Here, the past experience and intuition of the operator with respect to the demand amount pattern based on the season and weather of the day and the planned water intake determined from the state of the plurality of water sources are set in advance as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 selects the valve opening degree of the flow rate adjusting valve at that time through the expert system 23a using the flow rate adjusting knowledge base 24, and displays the selected valve opening degree through the guidance display means 6 together with the demand prediction result. By using the expert system 23a, the flow adjustment knowledge base 24 can easily change the knowledge through the rule editor 26 even by an operator who is unfamiliar with the computer, and before applying the changed knowledge to actual control, Verification tool 27
Through the computer, a simulation can be performed on the computer, and the result of the simulation can be confirmed through the simulation result display means 28.

Next, pressure control is performed. In this method, the entire distribution pipe network is divided into sections according to the flow of water in each distribution system.
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, the current position in the setting of the opening balance data 19 is determined to find out which valve should be opened or closed in order to go up or down. Ask for some degree of opening. Pressure control means 1
Numeral 1 inputs the opening from the opening setting means 15 and displays it to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases and the demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, the pressure control means 11 and the schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator has confirmed all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the fifth embodiment, since the demand is predicted by pattern matching, the correction based on the actual water distribution on the day is performed. Therefore, the demand can be predicted with higher accuracy than before, and the expert system is used for flow rate adjustment. Since the control by 23a is employed and the control by the opening balance data 19 is employed for the pressure control, finer flow rate adjustment and pressure control can be performed. Expert system 2
The operator 3a can easily change the knowledge even by an operator unfamiliar with the computer, and before applying the changed knowledge to actual control, can simulate the content on the computer and confirm the result of the content. Can quickly respond to knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 6 FIG. Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a block diagram showing a configuration of a water supply distribution control system according to the sixth embodiment. 6, components corresponding to the components shown in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted. In the sixth embodiment, the demand forecast correcting means 22 described in FIG. 3 and the expert system 23a described in FIG.
It has.

Next, the operation of the sixth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and obtains a plurality of patterns having similar factors from the past actual water distribution 17. Select water distribution data. Among the plurality of selected water distribution amount data, the past water distribution amount data having a curve closest to the trend of the actual water distribution amount at 6 to 9 o'clock in the morning on the day is selected by the water distribution amount data selecting means 20. In this case, the water distribution amount data selection means 20 determines the difference value between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. For example, after 10:00 am, the actual water distribution amount of the day can be known from the selected past water distribution amount data. , The demand prediction amount is increased or decreased by the difference, and this is used as the prediction correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount.

Here, the past experience and intuition of the operator with respect to the pattern of the demand amount due to the season and weather of the day and the planned water withdrawal amount determined from the situation of the plurality of water sources are preset as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 selects the valve opening degree of the flow rate adjusting valve at that time through the expert system 23a using the flow rate adjusting knowledge base 24, and displays the selected valve opening degree through the guidance display means 6 together with the demand prediction result. It should be noted that the flow rate adjustment knowledge base 24 can be easily changed by an operator who is unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to actual control, a verification tool 27 based on online data is used on the computer. Can be confirmed through the simulation result display means 28.

Next, pressure control is performed. This is performed by setting a division along the flow of water for each distribution system in the entire distribution pipe network,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The opening setting means 15 inputs the actual pressure and the actual valve opening data from the actual pressure / actual valve opening data 18 and compares the preset target pressure with the actual pressure.
Next, from the actual valve opening, it is determined which valve opening is present in the setting of the opening balance data 19, and which valve should be opened or closed to go to the pressure increasing side or the pressure decreasing side. What is the degree of opening? The pressure control means 11 inputs the opening degree from the opening degree setting means 15 and displays it to the operator through the guidance display means 6b.

On the other hand, there is a certain movement in the increase and decrease of the daily demand. At dawn, the human activity starts, the demand increases, and the maximum demand (peak) of the day is reached. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the sixth embodiment, in order to forecast demand by pattern matching, for example, selection based on the amount of water distribution at 6 to 9 o'clock on the day and correction based on the actual amount of water distribution on the day are performed. Can be performed with high accuracy,
Since the control by the expert system 23a is adopted for the flow rate adjustment and the control by the opening degree balance data 19 is adopted for the pressure control, finer flow rate adjustment and pressure control can be performed. Further, the expert system 23a can easily change the knowledge even by an operator who is unfamiliar with the computer, and before applying the changed knowledge to the actual control, can simulate on the computer and confirm the result of the content. Respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 7 Hereinafter, a seventh embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a block diagram showing a configuration of a water supply distribution control system according to the seventh embodiment. 7, components corresponding to the components shown in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted. In FIG. 7, reference numeral 23b denotes an expert system on a computer for controlling the pressure by controlling the pressure control means 11 based on the pressure control knowledge base 25. 26 is a rule editor of the pressure control knowledge base 25, 27 is a verification tool based on online data, and 28 is a simulation result display means for displaying a simulation result by the verification tool 27. Rule editor 26 and validation tool 27
Is provided in the expert system 23b.

Next, the operation of the seventh embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and obtains a plurality of patterns having similar factors from the past actual water distribution 17. Select water distribution data. Of the plurality of selected water distribution data, for example, 6-9
The water distribution data selection means 20 selects data of the past water distribution having the curve closest to the tendency of the actual water distribution at the time. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. The flow rate adjusting means 10 includes:
Using the same factors as the demand prediction results, the water distribution amount for each water source is selected from the past actual water distribution amount 17 using the pattern matching means 14 to select appropriate actual water distribution amount data. Next, the flow rate adjusting means 10 selects, by the least squares method, the one with the closest ratio to the planned value of the supply amount of each water source today, and determines the actual valve opening corresponding to the day together with the demand prediction result through the guidance display means 6a. indicate.

Next, pressure control is performed. This is performed by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The demand control pattern based on the season and weather of the day and the past experience and intuition of the operator when the pressure drops or rises are set in advance as the pressure control knowledge base 25. This pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening according to the situation. The pressure control means 11 calculates the opening balance data 19
Using the pressure control knowledge base 25 and the pressure control knowledge base 25, the valve opening of the pressure control valve at that time is selected through the expert system 23b and displayed through the guidance display means 6b. It should be noted that the pressure control knowledge base 25 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to actual control, a verification tool 27 based on online data is used on the computer. Can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement regarding the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases, and the demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, the pressure control means 11 and the schedule control means 12 are executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the seventh embodiment, since the selection based on the water distribution amount at 6 to 9 o'clock of the day is performed for the demand forecast by the pattern matching, the demand forecast can be performed with higher accuracy than before, and the pressure In the control, since the control based on the opening degree balance data 19 and the correction of the data 19 are performed by the expert system 23b, finer pressure control is possible. Further, the expert system 23b can easily change the knowledge even by an operator unfamiliar with the computer, and can simulate the content on the computer before applying the changed knowledge to actual control. It can respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 8 FIG. Hereinafter, an eighth embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a block diagram showing a configuration of a water supply distribution control system according to the eighth embodiment. The eighth embodiment is different from the seventh embodiment shown in FIG. 7 in that the water distribution data selecting means 20 is replaced with a demand prediction correcting means 22, and other configurations are the same.

Next, the operation of the eighth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs the day of the week and holidays from a calendar provided in advance in the computer, performs pattern matching including past factor data, and calculates the water distribution amount having the same factor from the past actual water distribution amount 17. Select data. In this case, the latest data closest to the day is used as basic data for demand forecast.
For example, since 10:00 a.m., the actual water distribution amount of the day can be known from the water distribution amount data selected above, the demand prediction correcting means 22 compares the demand prediction amount by the demand prediction means 1 with the actual water distribution amount, The difference is used to increase or decrease the demand forecast amount, and this is used as the forecast correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount. The flow rate adjusting means 10 uses the same factor as the demand prediction result to determine the water distribution amount for each water source by the pattern matching means 1.
4 is used to select appropriate actual water distribution amount data from the past actual water distribution amount 17. Next, the flow rate adjusting means 10 selects, by the least squares method, the one with the closest ratio to the planned value of the supply amount of each water source today, and determines the actual valve opening corresponding to the day together with the demand prediction result through the guidance display means 6a. indicate.

Next, pressure control is performed. This is performed by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The demand control pattern based on the season and weather of the day and the past experience and intuition of the operator at the time of pressure drop or rise are preset as the pressure control knowledge base 25. The pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening depending on the situation. The pressure control means 11 selects the valve opening degree of the pressure control valve at that time through the expert system 23b using the opening degree balance data 19 and the pressure control knowledge base 25, and displays it through the guidance display means 6b. It should be noted that the pressure control knowledge base 25 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to actual control, a verification tool 27 based on online data is used on the computer. Can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases and the daily demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, the pressure control means 11 and the schedule control means 12 are executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the eighth embodiment, demand forecasting by pattern matching is corrected based on the actual water distribution amount of the day. Therefore, demand forecasting can be performed more accurately than in the past. Opening balance data 1
Since the control by the control unit 9 and the correction of the data 19 are performed by the expert system 23b, finer pressure control can be performed. Further, the expert system 23b can easily change the knowledge even by an operator unfamiliar with the computer, and can simulate the content on the computer before applying the changed knowledge to actual control. It can respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 9 FIG. Hereinafter, a ninth embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a block diagram showing a configuration of a water supply distribution control system according to the ninth embodiment. In the ninth embodiment, a demand prediction correcting unit 22 is added to the configuration of the seventh embodiment shown in FIG.

Next, the operation of the ninth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. The pattern matching means 14 inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and obtains a plurality of patterns having similar factors from the past actual water distribution 17. Select water distribution data. Among the plurality of selected water distribution amount data, the past water distribution amount data having a curve closest to the trend of the actual water distribution amount at 6 to 9 o'clock in the morning on the day is selected by the water distribution amount data selecting means 20. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. Based on the selected past water distribution amount data, for example, after 10:00 am, the actual water distribution amount of the day is known.
Is compared with the actual water supply amount, and the difference is used to increase or decrease the demand forecast amount, and this is used as the forecast correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount. Flow control means 10
Uses the same factors as the demand prediction results, and selects data from the past actual water distribution amount 17 using the pattern matching means 14 for the water distribution amount for each water source. Next, the flow rate adjusting means 10 selects, by the least squares method, the one with the closest ratio to the planned value of the supply amount of each water source today, and determines the actual valve opening corresponding to the day together with the demand prediction result through the guidance display means 6a. indicate.

Next, pressure control is performed. This is done by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

The demand control pattern based on the season and weather of the day and the past experience and intuition of the operator at the time of pressure drop or rise are set as the pressure control knowledge base 25 in advance. The pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening depending on the situation.

The pressure control means 11 selects the valve opening degree of the pressure control valve at that time through the expert system 23b using the opening degree balance data 19 and the pressure control knowledge base 25, and displays it through the guidance display means 6b. . It should be noted that the pressure control knowledge base 25 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to actual control, a verification tool 27 based on online data is used on the computer. Can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement in the increase and decrease of the daily demand. At dawn, the human activity starts, the demand increases, and the maximum demand (peak) of the day is reached. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the ninth embodiment, in order to perform demand forecasting by pattern matching, for example, selection based on the amount of water distribution at 6:00 to 9:00 on the day and correction based on the actual amount of water distribution on the day are performed. Can be performed with high accuracy,
In the pressure control, since the control based on the opening degree balance data 19 and the correction of the data 19 are performed by the expert system 23b, finer pressure control becomes possible. Further, the expert system 23b can easily change the knowledge even by an operator unfamiliar with the computer, and can simulate the content on the computer before applying the changed knowledge to actual control. Respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 10 FIG. Hereinafter, a tenth embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a block diagram showing a configuration of a water supply distribution control system according to the tenth embodiment. In the tenth embodiment, an expert system 23a is provided before the flow rate adjusting means 10. In FIG. 10, 26 is a rule editor of the flow rate adjustment knowledge base 24 and the pressure control knowledge base, 27
Is a verification tool based on online data, and 28 is a simulation result display means for displaying a simulation result by the verification tool 27. The rule editor 26 and the verification tool 27 are provided in the expert systems 23a and 23b.

Next, the operation of the tenth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. Pattern matching means 14
Inputs a day of the week and holidays from a calendar provided in advance in the computer, performs pattern matching including past factor data, and outputs a plurality of water distribution data having similar factors from the past actual water distribution 17. Pick out. Among the plurality of selected water distribution amount data, the past water distribution amount data having a curve closest to the trend of the actual water distribution amount at 6 to 9 o'clock in the morning on the day is selected by the water distribution amount data selecting means 20. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method.

Here, the operator's past experience and intuition regarding the planned water intake determined from the pattern of the demand according to the season and weather on the day and the status of a plurality of water sources are preset as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 uses the flow rate adjusting knowledge base 24 to select the valve opening degree of the flow rate adjusting valve at that time through the expert system 23a, and together with the demand prediction result, the guidance display means 6a.
View through It should be noted that the flow rate adjustment knowledge base 24 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the knowledge is changed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

Next, pressure control is performed. This is accomplished by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

Here, the demand control pattern based on the season or weather of the day and the operator's past experience and intuition at the time of pressure drop or rise are set as the pressure control knowledge base 25 in advance. The pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening depending on the situation.

The pressure control means 11 selects the valve opening degree of the pressure control valve at that time through the expert system 23b using the opening degree balance data 19 and the pressure control knowledge base 25, and displays it through the guidance display means 6b. . It should be noted that the pressure control knowledge base 25 can be easily changed by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the verification is performed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases and the daily demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the tenth embodiment, since the demand is predicted by pattern matching, for example, the water distribution at 6:00 to 9:00 on the day is selected, the demand can be predicted with higher accuracy than before, and The adjustment is performed by the control of the expert system 23a, and in the pressure control, the control by the opening degree balance data 19 and the correction of the data 19 are performed by the expert system 23b, so that more detailed flow rate adjustment and pressure control are possible. Becomes Further, the expert systems 23a and 23b can easily change the knowledge even by an operator unfamiliar with the computer, and before applying the changed knowledge to actual control, it is possible to simulate on the computer and confirm the result of the content. Respond quickly to knowledge and intuition that change over time. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 11 FIG. Hereinafter, an eleventh embodiment of the present invention will be described with reference to the drawings. FIG. 11 is a block diagram showing a configuration of a water supply distribution control system according to the eleventh embodiment. The eleventh embodiment is different from the water distribution data selecting means 20 in the tenth embodiment shown in FIG.
Demand forecast correction means 22 is provided in place of.

Next, the operation of the eleventh embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. Pattern matching means 14
Inputs a day of the week and a holiday from a calendar provided in advance in the computer, performs pattern matching including past factor data, and selects water distribution data having the same factor from the past actual water distribution 17. In this case, the latest data closest to the day is used as basic data for demand forecast. According to the water distribution data selected above, for example,
After 0:00, the actual water distribution amount of the day is known, so the demand forecast correcting means 22 compares the demand forecast amount by the demand forecasting means 1 with the actual water distribution amount, and increases or decreases the demand forecast amount by the difference. , And this is used as the predicted correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount.

Here, the past experience and intuition of the operator with respect to the pattern of the demand amount due to the season and weather of the day and the planned water withdrawal amount determined from the state of the plurality of water sources are preset as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 uses the flow rate adjusting knowledge base 24 to select the valve opening degree of the flow rate adjusting valve at that time through the expert system 23a, and together with the demand prediction result, the guidance display means 6a.
View through It should be noted that the flow rate adjustment knowledge base 24 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the knowledge is changed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

Next, pressure control is performed. This is accomplished by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

Here, the demand control pattern based on the season or weather on the day and the operator's past experience and intuition at the time of pressure drop or rise are preset as the pressure control knowledge base 25. The pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening depending on the situation.

The pressure control means 11 uses the opening degree balance data 19 and the pressure control knowledge base 25 to select the valve opening degree of the pressure control valve at that time through the expert system 23b and displays it through the guidance display means 6b. . It should be noted that the pressure control knowledge base 25 can be easily changed by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the verification is performed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement in the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases and the daily demand becomes the maximum demand (peak) of the day, and once before noon. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator has confirmed all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the eleventh embodiment, since the demand is predicted by pattern matching, the correction based on the actual water distribution on the day is carried out. In the pressure control, since the control based on the opening degree balance data 19 and the correction of the data 19 are performed by the expert system 23b, finer flow rate adjustment and pressure control can be performed. Further, the expert systems 23a and 23b can easily change the knowledge even by an operator unfamiliar with the computer, and before applying the changed knowledge to actual control, it is possible to simulate on the computer and confirm the result of the content. Respond quickly to knowledge and intuition that change over time. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

Embodiment 12 FIG. Hereinafter, a twelfth embodiment of the present invention will be described with reference to the drawings. FIG. 12 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 12 of the present invention. In the twelfth embodiment, a water distribution data selecting means 20 is provided in the configuration of the eleventh embodiment shown in FIG.

Next, the operation of the twelfth embodiment will be described. The operator inputs from the factor setting means 16 factor data such as today's expected weather and expected maximum temperature at 9:00 each morning, which is the morning change time. Pattern matching means 14
Inputs a day of the week and holidays from a calendar provided in advance in the computer, performs pattern matching including past factor data, and outputs a plurality of water distribution data having similar factors from the past actual water distribution 17. Pick out. Among the plurality of selected water distribution amount data, the past water distribution amount data having a curve closest to the trend of the actual water distribution amount at 6 to 9 o'clock in the morning on the day is selected by the water distribution amount data selecting means 20. In this case, the water distribution amount data selecting means 20 determines the difference between the actual water distribution amount per hour and the selected past actual water distribution amount by the least square method. Based on the selected past water distribution data, since 10:00 a.m., the actual water distribution on the day is known, the demand forecast correcting means 22 compares the demand forecast amount by the demand forecasting means 1 with the actual water distribution amount, The difference is used to increase or decrease the demand forecast amount, and this is used as the forecast correction amount. The demand forecasting means 1 corrects the demand forecast amount at that time on the day based on the forecast correction amount.

Here, the past experience and intuition of the operator with respect to the pattern of the demand amount due to the season and weather of the day and the planned water withdrawal amount determined from the situation of a plurality of water sources are set in advance as the flow rate adjustment knowledge base 24. . The flow rate adjusting means 10 selects the valve opening degree of the flow rate adjusting valve at that time through the expert system 23 by using the flow rate adjusting knowledge base 24 and displays the opening degree together with the demand prediction result through the guidance display means 6a. It should be noted that the flow rate adjustment knowledge base 24 can be easily changed even by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the knowledge is changed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

Next, pressure control is performed. This is performed by setting a division along the flow of water in the entire distribution pipe network for each distribution system,
Control pressure within the compartment. In one compartment, a main injection valve that is usually the main water supply source into the compartment,
It is necessary to properly maintain the terminal pressure in the compartment by a water distribution pipe that covers the inside of the compartment in a mesh pattern and valves provided at important places.
Although the terminal pressure itself cannot be measured, it is estimated by a pressure gauge installed at the end of the distribution pipe as far as possible. Here, the pressure is controlled by grouping a plurality of valves having an influence on a certain pressure observation point in the section and balancing the relative opening degrees of the valves. A plurality of valves grouped have an order in which a certain pressure observation point has an effect of increasing or decreasing pressure and the balance of the relative opening of the valves, and the data is stored in advance in the opening balance data 19. Set it.

Here, the demand control pattern based on the season or weather of the day and the past experience and intuition of the operator at the time of pressure drop or rise are preset as the pressure control knowledge base 25. The pressure control knowledge base 25 is based on the opening balance data 19 and corrects the opening depending on the situation.

The pressure control means 11 selects the valve opening degree of the pressure control valve at that time through the expert system 23 using the opening degree balance data 19 and the pressure control knowledge base 25 and displays it through the guidance display means 6b. . It should be noted that the pressure control knowledge base 25 can be easily changed by an operator unfamiliar with the computer through the rule editor 26, and before the changed knowledge is applied to the actual control, the verification is performed on the computer through the online data verification tool 27. The result of the simulation can be confirmed through the simulation result display means 28.

On the other hand, there is a certain movement regarding the increase and decrease of the daily demand, and at the dawn of the start of human activities, the demand increases, and the demand becomes the maximum demand (peak) of the day. We have a gentle break. Then it peaks again in the evening, but smaller than dawn. And the demand becomes small after midnight, and it is hardly used around 2 to 3 in the middle of the night. Although the above movements are slightly different depending on the season, they show similar movements at a fixed time almost every day. Here, the movement of the valve with respect to the peak in the morning and the end of the demand in the night is set in the schedule control data 13 in advance depending on the season, and the schedule control means 1
At 2, the control of the valve is executed.

The control commands from the flow control means 10, pressure control means 11 and schedule control means 12 are as follows:
This will be executed as control for each valve. Valves that execute flow rate adjustment and pressure control do not overlap because of different types, but valves that execute pressure control and schedule control overlap. In that case, priority is given to schedule control.

On the other hand, the operator confirms all the contents of the above automatic control through the guidance display means 6a and 6b.
If the contents are not satisfactory, the opening degree of the valve can be set freely through the manual operation means 8. The contents of the manual operation take precedence over all of the automatic control described above.

According to the above procedure, the control monitoring means 3 controls the actual water distribution network by the water distribution network output means 5.

According to the twelfth embodiment, in order to perform demand forecasting by pattern matching, for example, selection based on the water distribution amount at 6:00 to 9:00 on the day and correction based on the actual water distribution amount on the day are performed. The flow rate is controlled by the expert system, and the pressure control is controlled by the opening balance data and the correction is performed by the expert system, so that more precise flow control and pressure control are possible. Become. In addition, the expert system can easily change the knowledge even by operators unfamiliar with the computer, and before applying the changed knowledge to actual control, it can simulate on the computer and check the result of the content, so it will take time Respond quickly to changing knowledge and intuition. Further, by using the pressure control and the schedule control together, it is possible to greatly reduce the burden on the operator who had to quickly open many valves in order in the morning peak.

[0137]

As described above, according to the first aspect of the present invention, the demand forecasting means for predicting the demand of the water supply to each customer, and the flow rate of the water supply from a plurality of water sources, Since it has a flow rate adjusting means for adjusting based on the predicted demand amount, and a pressure control means for controlling the pressure of clean water supplied to each customer to a certain range based on the adjusted flow rate,
The flow rate adjustment and the pressure control can be appropriately performed, and thereby an effect that waste water such as water leakage can be suppressed can be obtained.

According to the second aspect of the invention, the demand forecasting means for predicting the demand of the water supplied to each customer, and the flow rate of the water supplied from a plurality of water sources are calculated by using the predicted demand Flow control means for adjusting the pressure of clean water supplied to each customer to a certain range based on the adjusted flow rate; and Demand forecasting correction means for correcting the demand forecasting amount on the day based on the difference between the demand amount and the past actual water distribution amount on the day is provided. Thus, the effect of suppressing waste water can be obtained. Further, since the demand prediction amount can be corrected, the effect that demand prediction can be performed with higher accuracy than before can be obtained.

According to the third invention, the demand forecasting means determines the rise of the actual demand during the peak usage period of the day in addition to factors such as the forecast day, the past weather, the maximum temperature, the day of the week, and consecutive holidays. Since the prediction is performed by pattern matching from the data of the past actual water distribution amount using the indicated water distribution change amount, there is obtained an effect that the demand prediction can be performed with higher accuracy than before.

[0140] According to the fourth aspect, the flow rate adjusting means is operable to calculate the predicted or predicted and corrected demand forecast amount in accordance with the planned supply amount of clean water supplied by a plurality of water sources. Since the water distribution plan is planned, the flow rate can be adjusted efficiently without waste.

According to the fifth aspect, since the pressure control means controls the pressure by grouping a plurality of valves and balancing the relative opening of the valves, finer pressure control can be performed. The effect is obtained.

According to the sixth aspect of the present invention, since the expert system for adjusting the flow rate is provided based on the knowledge base for adjusting the flow rate, the effect that the flow rate can be adjusted more finely can be obtained.

According to the seventh aspect, since the expert system for performing the pressure control based on the pressure control knowledge base is provided, the effect that the pressure control can be performed more finely can be obtained.

According to the eighth aspect, the rule editor is provided in the expert system, so that an operator who is unfamiliar with the computer can easily change the knowledge through the rule editor.

According to the ninth aspect of the present invention, since the expert system is provided with the verification tool, it is possible to confirm the result of the simulation by using the verification tool on a computer before applying the knowledge to the actual control. The effect is obtained.

According to the tenth aspect, the schedule control means for controlling the pressure of the water supply by opening and closing the valve in a scheduled manner in accordance with the time zone when the demand increases or decreases is provided. This has the effect of greatly reducing the burden on the operator who had to quickly open many valves in order.

According to the eleventh aspect, the schedule control means opens the valve in the morning and evening when the demand is rapidly increasing, and closes the valve in the night when the demand is rapidly decreasing. Controlling the pressure of clean water eliminates the need for the operator to open and close the valve during times when the demand is rapidly increasing or decreasing, and has the effect of greatly reducing the burden on the operator. Can be

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 2 of the present invention.

FIG. 3 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 3 of the present invention.

FIG. 4 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 4 of the present invention.

FIG. 5 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 5 of the present invention.

FIG. 6 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 6 of the present invention.

FIG. 7 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 7 of the present invention.

FIG. 8 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 8 of the present invention.

FIG. 9 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 9 of the present invention.

FIG. 10 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 10 of the present invention.

FIG. 11 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 11 of the present invention.

FIG. 12 is a block diagram showing a configuration of a water supply distribution control system according to Embodiment 12 of the present invention.

FIG. 13 is a block diagram showing a configuration of a conventional water supply distribution control system.

[Explanation of symbols]

1 demand forecasting means, 3 control monitoring means, 5 water pipe network output means, 6a, 6b guidance display means, 8 manual operation means, 10 flow rate adjustment means, 11 pressure control means, 1
2 schedule control means, 13 schedule control data, 14 pattern matching means, 15 opening degree setting means, 16 factor setting means, 17 past actual water distribution amount,
18 Actual pressure / actual valve opening, 19 Opening balance data, 20 Water distribution data selection means, 21 Past actual valve opening, 22 Demand forecast correction means, 23a, 23b Expert system, 24 Flow control knowledge base, 25
Pressure control knowledge base, 26 rule editor, 27 verification tool, 28 simulation result display means.

Claims (11)

[Claims] 1. A water supply distribution control system for controlling distribution amount and pressure of water supplied from a plurality of water sources in a water supply system to each customer through a mesh-like water distribution pipe and a valve. A demand forecasting unit for predicting a demand amount of water supplied to the house; a flow regulating unit for adjusting a flow rate of the water supplied from the plurality of water sources based on the predicted demand amount; A water supply distribution control system, comprising: pressure control means for controlling the pressure of water supplied to a customer within a predetermined range based on the adjusted flow rate. 2. A water supply distribution control system for controlling the amount and pressure of water supplied from a plurality of water sources in a water supply to each customer through a mesh-like water distribution pipe and a valve. A demand forecasting unit for predicting a demand amount of water supplied to the house; a flow regulating unit for adjusting a flow rate of the water supplied from the plurality of water sources based on the predicted demand amount; Pressure control means for controlling the pressure of clean water supplied to the customer to a certain range based on the adjusted flow rate, demand on the day predicted by the demand forecasting means, and past actual water distribution on the day And a demand forecasting correction means for correcting the demand forecasting amount of the day based on the difference between the water supply forecasting control system and the water supply distribution control system. 3. The demand forecasting means calculates, in addition to the forecasted day, past weather, maximum temperature, day of the week, consecutive holidays, and other factors, a water distribution change indicating the rise of the actual demand during the peak usage period of the day. 3. The water supply and distribution control system according to claim 1 or 2, wherein the demand is predicted by pattern matching from past data on the actual distribution of water using the same. 4. The flow rate adjusting means is capable of purifying water with a plurality of water sources with respect to the demand forecast amount predicted by the demand forecasting means or predicted and corrected by the demand forecasting means and the demand forecast correcting means. The water supply distribution control system according to claim 1 or 2, wherein a water distribution plan is planned systematically in accordance with a plan value of a supply amount of water supply. 5. The pressure control device according to claim 1, wherein the pressure control means controls the pressure of clean water by grouping a plurality of valves and balancing the relative opening of the valves. Or the water supply distribution control system according to item 2. 6. The computer system according to claim 1, further comprising an expert system on a computer for adjusting a flow rate of clean water based on a flow rate adjustment knowledge base storing knowledge on flow rate adjustment. Water distribution control system. 7. The system according to claim 1, further comprising an expert system on a computer for controlling water pressure based on a pressure control knowledge base storing knowledge on pressure control. Water distribution control system. 8. The water supply distribution control system according to claim 6, wherein said expert system comprises a knowledge-based rule editor. 9. The water supply / distribution control system according to claim 6, wherein said expert system includes a verification tool based on online data of rules of a knowledge base. 10. The system according to claim 1, further comprising schedule control means for controlling the pressure of tap water by opening and closing a valve in a scheduled manner in accordance with a time zone in which the demand increases or decreases. Water distribution control system described. 11. The schedule control means opens a valve at a time when the demand in the morning and evening is sharply increased, and closes a valve during a time when the demand at night is sharply reduced, thereby controlling the pressure of the water supply. The water supply and distribution control system according to claim 10, wherein