JP6896391B2 - Water intake planning device, water intake system and water intake planning method - Google Patents

Description

Embodiments of the present invention relate to an intake planning device, an intake system and an intake planning method.

In the water supply business, which is an important lifeline, it is necessary to continue to supply water that meets the water quality standards as much as possible even if the quality of raw water deteriorates. Therefore, the water intake system needs to continue to supply raw water as much as possible so that it can meet the water quality standards. However, in the past, it may not be possible to improve the water supply capacity of the water intake system.

Japanese Patent No. 4945301 Japanese Patent No. 4489010 Japanese Unexamined Patent Publication No. 2004-42016 Japanese Unexamined Patent Publication No. 2000-309955

An object to be solved by the present invention is to provide an intake planning device, an intake system and an intake planning method capable of improving the water supply capacity of the intake system.

The water intake planning device of the embodiment has a water quality prediction unit, a water intake request amount calculation unit, and a communication unit. The water quality prediction unit predicts the water quality according to the predicted rainfall amount based on the correlation between the actual rainfall amount and the actual water quality value. The water intake requirement calculation unit calculates the water intake requirement, which is the amount of water intake required for the facilities related to water treatment, for each facility based on the prediction result of water quality. The communication unit transmits information indicating the amount of water intake required to at least one facility.

The figure which shows the example of the structure of the intake system of an embodiment. The figure which shows the example of the structure of the weather information system of embodiment. The figure which shows the example of the structure of the facility group of an embodiment. The figure which shows the example of the structure of the intake planning apparatus of embodiment. The figure which shows the example of the correlation of the actual value of the rainfall amount and the turbidity of an embodiment. The figure which shows the 1st example of the actual value of rainfall and turbidity of an embodiment. The figure which shows the 2nd example of the actual value of rainfall and turbidity of an embodiment. The figure which shows the 3rd example of the actual value of rainfall and turbidity of an embodiment. The figure which shows the example of the predicted value of the rainfall amount of an embodiment. The figure which shows the example of the progress of the prediction of the turbidity based on the predicted value of the rainfall of an embodiment. The figure which shows the example of the prediction result of the turbidity based on the predicted value of the rainfall of an embodiment. The figure which shows the example of the predicted time of an embodiment. The flowchart which shows the example of the calculation procedure of the predicted value of an embodiment. The flowchart which shows the example of the procedure for calculating the water intake request amount of an embodiment. The flowchart which shows the example of the procedure for calculating the intake correction amount of an embodiment. The flowchart which shows the example of the procedure of transmitting the scheduled time of the embodiment. A flowchart illustrating an example of a procedure in which the water intake planning apparatus of the embodiment controls the circulation of tokens in the network.

Hereinafter, the water intake planning device, the water intake system, and the water intake planning method of the embodiment will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of the configuration of the water intake system 1. The water intake system 1 is a system that executes water intake and water supply. The water intake system 1 predicts the water quality of the water source according to the predicted value of the rainfall of the water source based on the correlation between the actual value of the rainfall of the water source and the actual value of the water quality of the water source. The water intake system 1 may predict the water quality of the water source according to the predicted value of the flow rate based on the correlation between the actual value of the flow rate according to the amount of rainfall and the actual value of the water quality of the water source.

The water quality is, for example, the turbidity of water and the transparency of water. Factors that change water quality are, for example, the amount of rainfall, the flow rate of water, the temperature of water, the alkalinity of water, the amount of 2-MIB (2-methylisoborneol) and geosmin, which are substances that cause musty odor, and the radiation dose of water. .. Hereinafter, the amount of water intake required for facilities related to water treatment is referred to as "water intake required amount".

The water intake system 1 generates water intake plan information regarding the water intake system 1 based on the prediction result of the water quality of the water source. For example, the water intake system 1 is based on the water quality prediction result so that the total amount of water intake demand (hereinafter referred to as “water intake demand”) and the total amount of water intake demand in the water intake system 1 match. Is calculated for each facility. The water intake system 1 supplies water taken from a water source based on water intake plan information to a plurality of consumers from a plurality of facilities.

The water intake system 1 includes a meteorological information system 2, upstream point measuring devices 3-1 to 3-N (N is an integer of 2 or more), water intake point measuring devices 4-1 to 4-N, and facilities 5-1 to 1. It is provided with 5-N, a junction well 6-1 to 6- (N-1), and a distribution reservoir 7-1 to 7-N. Hereinafter, the group including the upstream point measuring device 3, the intake point measuring device 4, and the facility 5 is referred to as a “facility group 100”.

The weather information system 2 is an information processing device that provides weather information. The meteorological information is, for example, rainfall information and temperature information. Meteorological information is associated with time and position. The positions associated with the meteorological information are, for example, an upstream point of the water source and an intake point of the water source (position of the intake point). The water source is, for example, a surface water source such as a river or a reservoir, a groundwater source such as a well, or seawater. The meteorological information system 2 transmits the meteorological information to the facility 5 and the water intake planning device 8.

The upstream point measuring device 3 is a device that measures the water quality at the upstream point of the water source 200. The upstream point measuring device 3 transmits the water quality information at the upstream point of the water source 200 to the water intake planning device 8.

The water intake point measuring device 4 is a device that measures the water quality at the water intake point of the water source 200. At the intake point (downstream point) of the water source 200, the water quality changes after a predetermined delay time from the time of rainfall at the upstream point of the water source 200. The water intake point measuring device 4 transmits the water quality information at the water intake point of the water source 200 to the water intake planning device 8.

Facility 5 is a facility (airport) related to water treatment. Facility 5 is, for example, a water purification plant. The facility 5 sends the treated water to the joint well 6 and the distribution reservoir 7 by using a pump. Facility 5 may be a sewage treatment plant. When facility 5 is a sewage treatment plant, the sewage pipe (not shown) of the sewage treatment plant corresponds to the water source 200, and the rainwater storage pipe (not shown) of the sewage treatment plant corresponds to the junction well 6 and the distribution reservoir 7. To do.

The joint well 6 is a water tank having a pipe connecting different facilities 5. For example, the junction well 6-1 has a pipe connecting the facility 5-1 and the facility 5-2. The distribution reservoir 7 is a water storage tank that temporarily stores water that has been treated with water. The distribution reservoir 7 is installed in a water purification plant or a water distribution plant. The pump of the distribution reservoir 7 sends the treated water to the customer. Piping for sending water to different facilities 5 is installed between different distribution reservoirs 7. For example, between the distribution reservoir 7-1 and the distribution reservoir 7-2, a pipe for sending water between the facility 5-1 and the facility 5-2 is installed.

The water intake planning device 8 is an information processing device that generates a water intake plan. The water intake planning device 8 may be a single information processing device, or may be a plurality of information processing devices (cloud centers) that operate using cloud computing technology.

Next, the details of each configuration of the water intake system 1 will be described.
FIG. 2 is a diagram showing an example of the configuration of the weather information system 2. The weather information system 2 includes an actual value storage unit 20, a predicted value storage unit 21, and a transmission unit 22. The actual value storage unit 20 stores the actual value of the weather information in association with the position and the time. The predicted value storage unit 21 stores the predicted value (forecast value) of the weather information in association with the position and the time. The transmission unit 22 continuously transmits the predicted value of the weather information to the facility 5 and the water intake planning device 8.

FIG. 3 is a diagram showing an example of the configuration of the facility group 100. The facility group 100-n (n is any of 1 to N) includes an upstream point measuring device 3-n, an intake point measuring device 4-n, and a facility 5-n. The upstream point measuring device 3-n includes a transmission unit 30-n. The transmission unit 30-n transmits the water quality information at the upstream point of the water source 200-n to the water intake planning device 8. The water intake point measuring device 4-n includes a transmission unit 40-n. The transmission unit 40-n transmits the water quality information at the water intake point of the water source 200-n to the water intake planning device 8.

Facility 5-n includes a database 50-n, a demand forecast system 51-n, a monitoring and control system 52-n, and a water treatment system 53-n. The database 50-n is configured by using a storage device having a non-volatile storage medium (non-temporary recording medium) such as a magnetic hard disk device or a semiconductor storage device. Database 50-n stores information about facility 5-n. For example, the database 50-n stores the actual value (history information) of the water quality at the upstream point of the water source 200-n in association with the time. For example, the database 50-n stores the actual value (history information) of the water quality at the water intake point of the water source 200-n in association with the time. For example, the database 50-n stores the predicted value of the meteorological information regarding the facility 5-n in association with the time.

The demand forecasting system 51-n is an information processing device that predicts the demand for water with respect to the facility 5-n. For example, the demand forecasting system 51-n predicts the demand for water for the facility 5-n based on the predicted value of the weather information for the facility 5-n. The demand forecasting system 51-n records the forecast results of the factors affecting the water demand for the facility 5-n in the database 50-n in association with the time. Factors that influence water demand are, for example, information on the movement of people by day type such as weekdays and holidays. For example, the demand forecasting system 51-n may predict that when a person moves to an urban area on a weekday, the demand for water will increase in that urban area.

The monitoring and control system 52-n is an information processing device that monitors and controls the water treatment system 53-n. The monitoring and control system 52-n acquires information representing the amount of water intake demand at the facility 5-n from the database 50-n. The monitoring and control system 52-n transmits information representing the amount of water intake demand at the facility 5-n to the water intake planning device 8 in association with the time.

Hereinafter, the margin amount of the water intake upper limit amount (water intake possible amount) with respect to the water intake request amount is referred to as "water intake margin amount". The water intake margin is equal to the result of subtracting the water intake requirement from the water intake upper limit. Hereinafter, the insufficient amount of the upper limit of water intake with respect to the required amount of water intake is referred to as "insufficient amount of water intake". The amount of insufficient water intake is equal to the result of subtracting the upper limit of water intake from the required amount of water intake.

When the upper limit of water intake is equal to or greater than the required amount of water intake, the monitoring control system 52-n transmits information indicating the amount of water intake allowance at the facility 5-n to the water intake planning device 8 in association with the time. When the upper limit of water intake is less than the required amount of water intake, the monitoring control system 52-n transmits information indicating the amount of insufficient water intake at the facility 5-n to the water intake planning device 8 in association with the time. The monitoring and control system 52-n has information indicating the turbidity of the water sent from the water treatment system 53-n to the distribution reservoir 7 (turbidity at the outlet of the filtration pool) and information indicating the injection amount of chemicals such as a flocculant. May be transmitted to the water intake planning device 8.

The monitoring control system 52-n acquires information representing a scheduled time (hereinafter referred to as "scheduled water intake time") based on the predicted time of water intake from the water intake planning device 8. The monitoring control system 52-n acquires information representing a scheduled time based on the predicted time of water intake stop (hereinafter referred to as "scheduled time of water intake stop") from the water intake planning device 8. The monitoring and control system 52-n may acquire the prediction result (support information for determining whether or not water intake is possible) of the factors affecting the water demand for the facility 5-n from the database 50-n or the water intake planning device 8. ..

The monitoring and control system 52-n controls the water intake operation of the water treatment system 53-n based on the scheduled water intake start time and the water intake stop scheduled time. For example, the monitoring and control system 52-n is a water treatment system 53-n so that when the current time is after the scheduled water intake start time, the water treatment system 53-n acquires raw water from the water intake point of the water source 200-n. To control. For example, the monitoring control system 52-n is a water treatment system so that when the current time is after the scheduled water intake stop time, the water treatment system 53-n stops the acquisition of raw water until the next scheduled water intake start time. Controls 53-n.

The water treatment system 53-n is a system for treating raw water with water. The water treatment system 53-n is, for example, a clean water treatment system and a sewage treatment system. The water treatment system 53-n includes a pump 530-n and a water treatment unit 531-n. Pump 530-n obtains raw water from the intake point of the water source 200-n. The amount of water taken per unit time varies depending on the output of the pump 530-n. The water treatment unit 531-n is a device that applies a predetermined treatment such as a treatment of injecting a coagulant into raw water to the water.

FIG. 4 is a diagram showing an example of the configuration of the water intake planning device 8. The water intake planning device 8 includes a communication unit 80, a water intake correction amount calculation unit 81, a database 82, a water quality prediction unit 83, a time management unit 84, and a water intake request amount calculation unit 85.

A processor such as a CPU (Central Processing Unit) stores some or all of the communication unit 80, the water intake correction amount calculation unit 81, the water quality prediction unit 83, the time management unit 84, and the water intake request amount calculation unit 85. It is realized by software that functions by executing the program stored in the unit. Further, some or all of these functional units may be realized by hardware such as LSI (Large Scale Integration) and ASIC (Application Specific Integrated Circuit).

The communication unit 80 executes communication between the water intake planning device 8 and the weather information system 2 via the network. For example, the communication unit 80 acquires weather information from the weather information system 2. The communication unit 80 executes communication between the water intake planning device 8 and the facility group 100 via the network. For example, the communication unit 80 transmits information indicating the scheduled water intake start time and information indicating the scheduled water intake stop time to the facility 5. For example, the communication unit 80 transmits information representing a water intake request amount to at least one facility 5. For example, the communication unit 80 transmits the prediction result (support information for determining whether or not water intake is possible) of the factors affecting the water demand related to the facility 5 to the facility 5.

For example, the communication unit 80 acquires water quality information at the upstream point of the water source 200 from the upstream point measuring device 3. For example, the communication unit 80 acquires water quality information at the water intake point of the water source 200 from the water intake point measuring device 4. For example, the communication unit 80 acquires information representing the amount of water intake demand in the facility 5 from the facility 5. The communication unit 80 acquires information indicating the amount of water intake allowance at the facility 5 from the facility 5. The communication unit 80 acquires information indicating the amount of insufficient water intake in the facility 5 from the facility 5.

The water intake correction amount calculation unit 81 identifies the facility 5 for which the water intake margin amount has been calculated, based on the information representing the water intake margin amount. As a result, the water intake correction amount calculation unit 81 can specify the facility 5 to which the water intake request amount can be added (added). The water intake correction amount calculation unit 81 identifies the facility 5 in which the water intake shortage amount is calculated based on the information representing the water intake shortage amount. As a result, the water intake correction amount calculation unit 81 can specify the facility 5 that needs to reduce the water intake request amount.

The water intake correction amount calculation unit 81 acquires the predicted value of the turbidity of water for each facility 5. The water intake correction amount calculation unit 81 acquires information representing the water intake demand amount (hereinafter referred to as “total water intake demand amount”) in the entire facilities 5-1 to 5-N (the entire business operator). The water intake correction amount calculation unit 81 acquires information representing the water intake request amount (hereinafter referred to as “total water intake request amount”) in the entire facilities 5-1 to 5-N. The water intake correction amount calculation unit 81 calculates the difference between the total water intake demand amount and the total water intake request amount. As a result, the water intake correction amount calculation unit 81 can calculate the margin amount (hereinafter referred to as “total intake margin amount”) or the shortage amount (hereinafter referred to as “total water intake shortage amount”) of the total intake demand amount with respect to the total water intake demand amount. ..

The water intake correction amount calculation unit 81 calculates the correction amount of the water intake request amount (hereinafter referred to as “water intake correction amount”) for each facility 5 based on the predicted value of turbidity. For example, the water intake correction amount calculation unit 81 calculates the water intake correction amount for each facility 5 so as to preferentially increase the water intake request amount during the period when the predicted value of turbidity is small. The water intake correction amount calculation unit 81 updates the water intake request amount by increasing or decreasing the water intake request amount by the water intake correction amount.

The database 82 is configured by using a storage device having a non-volatile storage medium (non-temporary recording medium) such as a magnetic hard disk device or a semiconductor storage device. The database 82 stores information representing the total amount of water intake demand.

The database 82 stores the water quality information at the upstream point of the water source 200 and the water quality information at the intake point of the water source 200 for the facilities 5-1 to 5-N. For example, the database 82 stores the actual value of rainfall and the actual value of turbidity for each time. The database 82 stores the actual value of rainfall and the actual value of turbidity for each position such as a rainfall point or an intake point.

FIG. 5 is a diagram showing an example of the correlation between the actual values of rainfall and turbidity. In the graph (relational database) shown in FIG. 5, the actual values of rainfall and turbidity are shown for each time with respect to the amount of rainfall and the time of increase and decrease of turbidity at the intake point of the water source 200. There is a correlation between the actual value of rainfall and the actual value of turbidity. In FIG. 5, the larger the actual value of rainfall, the larger the actual value of turbidity.

The database 82 may store the actual value of the flow rate of water at the water source 200 for each time. The larger the actual value of rainfall, the larger the actual value of water flow rate. Therefore, the larger the actual value of water flow rate at water source 200, the higher the turbidity of water at water source 200. The correlation between rainfall and turbidity may be expressed as the correlation between flow rate and turbidity.

FIG. 6 is a diagram showing a first example of actual values of rainfall and turbidity. The horizontal axis shows the time. The vertical axis on the left shows the actual value of rainfall at the upstream point. The vertical axis on the right shows the actual value of water turbidity at the intake point. The amount of rainfall at time t10 (rainfall start time) is 0. The turbidity starts to increase at the time t11 when the delay time length (t_rag) has elapsed from the time t10. The amount of rainfall at time t12 is K (t12). The turbidity at the time (t1_dh1) is D (t1_dh1). The time length of the period jk1 from the time t10 to the time 12 and the time length of the period jd1 from the time t11 to the time (t1_dh1) do not have to be the same time length.

FIG. 7 is a diagram showing a second example of actual values of rainfall and turbidity. The horizontal axis shows the time. The vertical axis on the left shows the actual value of rainfall at the upstream point. The vertical axis on the right shows the actual value of water turbidity at the intake point. The amount of rainfall at time t20 (rainfall start time) is 0. At time t21, the turbidity started to increase. At time t22, the slope (rate of change) (differential value) of the increase in rainfall becomes gentle. The amount of rainfall at time t23 is K1 (t23). At time t23, the slope of the increase in turbidity becomes gentle. In the period jd2 from time t23 to time t24, the turbidity is increasing. Moreover, the amount of rainfall is increasing at least in the period jk2 from the time t23 to the time t25.

FIG. 8 is a diagram showing a third example of actual values of rainfall and turbidity. The horizontal axis shows the time. The vertical axis on the left shows the actual value of rainfall at the upstream point. The vertical axis on the right shows the actual value of water turbidity at the intake point. The graph shown in FIG. 8 and the graph shown in FIG. 7 are, for example, graphs showing actual values of water quality at the same place in the same time zone on different days.

The amount of rainfall at time t20 (rainfall start time) is 0. At time t21, the turbidity started to increase. At time t22, the slope of the increase in rainfall is gradual. The amount of rainfall at time t23 is K2 (t23). The value of the rainfall K2 (t23) is larger than the value of the rainfall K1 (t23) shown in FIG. At time t23, the slope of the increase in turbidity becomes gentle. The turbidity at time t23 is D (t23). The turbidity D (t23) is a value obtained by adding the permissible value ε to the turbidity D (t1_dh1) shown in FIG. The method for determining the permissible value ε is not limited to a specific method. For example, the permissible value ε may be predetermined so that the sum of squares of the differences between the actual values of the turbidity to be compared is within a predetermined range. In the period jd3 from time t23 to time t24, the turbidity is increasing. Moreover, the amount of rainfall is increasing at least in the period jk3 from the time t23 to the time t25.

The water quality prediction unit 83 classifies the time-series actual value groups illustrated in FIGS. 6 to 8 into a plurality of patterns. The water quality prediction unit 83 is a pattern of mathematical formulas (y = ax, y = constant, y = -bx, etc., where a and b are coefficients) representing a time-series actual value group, and is a time-series actual value for a predetermined period. Groups may be classified. The water quality prediction unit 83 may classify the actual value group of the time series in a predetermined period by the waveform pattern (straight line, curve, rectangle, trapezoid, triangle, etc.) in the graph. The water quality prediction unit 83 may record the classification result of the actual value group in the time series for a predetermined period in the database 82.

The water quality prediction unit 83 acquires the predicted value of the rainfall in time series from the meteorological information system 2 or the database 82.

FIG. 9 is a diagram showing an example of a predicted value of rainfall. The horizontal axis shows the time. The vertical axis shows the predicted value of rainfall at the upstream point. Time t10 is the rain start time. The time t12 is the time when the period yk1 has elapsed from the time t10. The predicted value of rainfall at time t12 is K (t12) + ε. The time t13 is the time when the period yk2 has elapsed from the time t12. The predicted value of rainfall at time t13 is K (t13) + ε. In addition, in FIG. 9, the predicted value of the amount of rainfall after the time t13 may exist.

The water quality prediction unit 83 sets the actual value group showing the correlation between the actual rainfall of the water source 200 and the actual water quality of the water source 200, and the actual value of the rainfall of the water source 200 and the actual water quality of the water source 200. Extract from the actual value group including. For example, the water quality prediction unit 83 selects a group of actual values similar to the predicted values of the time-series rainfall illustrated in FIG. 9 from the actual values of the time-series rainfall exemplified in FIGS. 6 to 8. Extract at predetermined intervals. The prescribed period is set to be longer than the standard period when it is predicted that the rain will not be rapid, and shorter than the standard period when it is predicted that the rain will be rapid. It is decided. When the actual value group of the rainfall amount similar to the predicted value of the rainfall amount exists in a plurality of graphs, the water quality prediction unit 83 has the turbidity closest to the average value of the turbidity of the water at the intake point at the rainfall start time t10. From the graph showing the degree, the actual value group of rainfall may be extracted (specified).

It is considered that the correlation between the actual value of the rainfall of the water source 200 and the actual value of the water quality of the water source 200 is also established between the predicted value of the rainfall of the water source and the predicted value of the water quality of the water source. Therefore, the water quality prediction unit 83 determines the water source according to the predicted value (explanatory variable, independent variable) of the rainfall of the water source based on the correlation between the actual value of the rainfall of the water source 200 and the actual value of the water quality of the water source 200. Predict the water quality (objective variable, dependent variable) for each time.

FIG. 10 is a diagram showing an example of the progress of prediction of turbidity based on the predicted value of rainfall. The horizontal axis shows the time. The vertical axis on the left shows the amount of rainfall at the upstream point. The vertical axis on the right shows the predicted value of water turbidity at the intake point.

The rate of change in the amount of rainfall in the period yk1 illustrated in FIGS. 9 and 10 (slope of the graph) is substantially equal to the rate of change in the amount of rainfall in the period jk1 illustrated in FIG. The predicted value K (t12) + ε of the rainfall at time t12 illustrated in FIGS. 9 and 10 is substantially equal to the actual value K (t12) of the rainfall at time t12 illustrated in FIG. As described above, the predicted value group of the rainfall in the period yk1 exemplified in FIGS. 9 and 10 is similar to the actual value group of the rainfall in the period jk1 illustrated in FIG. 6 in terms of the rate of change and the like. There is. Therefore, the water quality prediction unit 83 sets the actual value group (approximate actual value group) similar to the predicted value group of the rainfall of the period yk1 illustrated in FIGS. 9 and 10 as the actual value group (approximate actual value group) of the period jk1 illustrated in FIG. Identify the actual rainfall group.

The water quality prediction unit 83 approximates the predicted value group of the rainfall in the period yk1 with the actual value group of the rainfall in the period jk1 illustrated in FIG. The time t11 is a time when the delay time length (t_rag) has elapsed from the time t10. In FIG. 6, the water quality prediction unit 83 defines the actual value group of the turbidity of the period jd1 that correlates with the actual value group of the rainfall of the period jk1 as the predicted value group of the turbidity of the period yd1 from the time t11. Whether or not there is a correlation period (corresponding period) is determined based on, for example, a consequence (correlation function, etc.) that includes a correlation factor. The period yk1 and the period yd1 do not have to be the same time length.

FIG. 11 is a diagram showing an example of a prediction result (correlation) of turbidity based on a predicted value of rainfall. The horizontal axis shows the time. The vertical axis on the left shows the amount of rainfall at the upstream point. The vertical axis on the right shows the predicted value of water turbidity at the intake point. In FIG. 11, since the predicted value of rainfall is approximated by the measured value of rainfall, the thin line showing the predicted value of rainfall is hidden by the thick line showing the measured value of rainfall.

The integrated value of the rainfall amount of the period yk1 exemplified in FIGS. 9 to 11 is substantially equal to the integrated value of the rainfall amount of the time t20 to the time t23 exemplified in FIG. If the integrated values of rainfall up to the last minute are almost the same, the turbidity is considered to be almost the same. The predicted value group of the rainfall in the period yk2 exemplified in FIGS. 9 to 11 is similar to the actual value group of the rainfall in the period jk2 illustrated in FIG. 7 in terms of the time length and the rate of change of the period. doing. Therefore, the water quality prediction unit 83 sets the actual value group (approximate actual value group) similar to the predicted value group of the rainfall in the period yk2 exemplified in FIGS. 9 to 11 as the actual value group (approximate actual value group) in the period jk2 exemplified in FIG. Identify the actual value group of rainfall in.

The water quality prediction unit 83 approximates the predicted value group of the rainfall in the period yk2 with the actual value group of the rainfall in the period jk2 illustrated in FIG. 7. The time length of the period yk2 and the time length of the period jk2 are, for example, the same time length. In FIG. 7, the water quality prediction unit 83 defines the actual value group of the turbidity of the period jd2, which has a correlation with the actual value group of the rainfall of the period jk2, as the predicted value group of the turbidity of the period yd2 from the time t1_dh1. The water quality prediction unit 83 similarly estimates the correlation after the time t13. The time length of the period yk2 and the time length of the period yd2 do not have to be the same.

The predicted value D (t1_dh1) of the turbidity at the time t1_dh1 exemplified in FIGS. 9 to 11 is the actual value D (t23) (= D (t1_dh1) + ε) of the turbidity at the time t23 exemplified in FIG. Is almost equal to. The predicted value group of the rainfall in the period yk2 exemplified in FIGS. 9 to 11 is similar to the actual value group of the rainfall in the period jk3 illustrated in FIG. 8 in terms of the time length and the rate of change of the period. doing. Therefore, the water quality prediction unit 83 sets the actual value group (approximate actual value group) similar to the predicted value group of the rainfall in the period yk2 exemplified in FIGS. 9 to 11 as the actual value group (approximate actual value group) in the period jk3 exemplified in FIG. You may specify the actual value group of the rainfall of.

The water quality prediction unit 83 may approximate the predicted value group of the rainfall in the period yk2 with the actual value group of the rainfall in the period jk3 illustrated in FIG. The time length of the period yk2 and the time length of the period jk3 are, for example, the same time length. In FIG. 8, the water quality prediction unit 83 defines the actual value group of the turbidity of the period jd3, which has a correlation with the actual value group of the rainfall of the period jk3, as the predicted value group of the turbidity of the period yd2 from the time t1_dh1. The water quality prediction unit 83 similarly estimates the correlation after the time t13. The time length of the period yk2 and the time length of the period yd3 do not have to be the same.

If the predicted value of the rainfall and the actual rainfall are different from each other, the water quality prediction unit 83 may approximate the actual rainfall with the actual rainfall group (real-time correction).

The time management unit 84 transmits the scheduled water intake start time for each facility 5 to the water intake request amount calculation unit 85. The time management unit 84 transmits the scheduled water intake start time for each facility 5 to the facility 5 via the communication unit 80. The time management unit 84 transmits the scheduled water intake stop time for each facility 5 to the water intake request amount calculation unit 85. The time management unit 84 transmits the scheduled water intake stop time for each facility 5 to the facility 5 via the communication unit 80.

FIG. 12 is a diagram showing an example of the predicted time. The horizontal axis shows the time. The vertical axis shows the predicted value of water turbidity at the intake point. The time management unit 84 determines the time when the predicted turbidity value is equal to or higher than the reference turbidity of water intake stop as the predicted time of water intake stop. The time management unit 84 determines the scheduled time for stopping water intake based on the predicted time for stopping water intake. The time management unit 84 defines the time when the predicted turbidity value is equal to or less than the reference turbidity of the start (restart) of water intake as the predicted time of water intake start. The time management unit 84 determines the scheduled water intake start time based on the predicted time of the water intake start.

The water intake request amount calculation unit 85 calculates a weighted value for each facility 5 according to a predicted value of water quality such as turbidity. The water intake request amount calculation unit 85 prorates the total water intake demand Q to the facilities 5 based on the weighted value for each facility 5. That is, the water intake request amount calculation unit 85 calculates the water intake request amount for each facility 5 based on the total water intake demand amount Q and the weighted value. The water intake request amount calculation unit 85 may update the water intake request amount instead of the water intake correction amount calculation unit 81 based on the water intake correction amount.

An example of the calculation method of the water intake requirement will be described. In the whole water intake system 1 (whole business operator), as an example, the turbidity of water at the water intake point of facility 5-1 is 2 mg / liter, and the turbidity of water at the water intake point of facility 5-2 is 3 mg. It is / liter, and the turbidity of the water at the intake point of the facility 5-3 is 4 mg / liter.

The water intake request amount calculation unit 85 calculates the least common multiple of each turbidity. For example, the water intake request amount calculation unit 85 calculates the least common multiple “12” of the turbidities “2”, “3” and “4”. The water intake request amount calculation unit 85 calculates the integer ratio of the reciprocal of the turbidity as a weighting value based on the calculated least common multiple. For example, the water intake request amount calculation unit 85 divides the least common multiple "12" by each turbidity to obtain an integer ratio (6: 4: 3) (= (12/2) :( 12 /) of the reciprocal of the turbidity. 3): (12/4)) is calculated as a weighted value.

The water intake request amount calculation unit 85 calculates the total of the component values of the integer ratio of the reciprocals of the turbidity. For example, the water intake request amount calculation unit 85 calculates a total of “13” of the component values “6”, “4” and “3” which are integer ratios of the reciprocals of turbidity. The water intake request amount calculation unit 85 proportionally divides the total water intake demand amount Q into the facilities 5 according to the integer ratio of the reciprocals of the turbidity. For example, the water intake request amount calculation unit 85 defines the water intake request amount of the facility 5-1 as ((6/13) × Q). For example, the water intake request amount calculation unit 85 defines the water intake request amount of the facility 5-2 as ((4/13) × Q). For example, the water intake request amount calculation unit 85 defines the water intake request amount of the facility 5-3 as ((3/13) × Q).

The water intake request amount calculation unit 85 may update the water intake request amount by adding or subtracting the water intake correction amount to the water intake request amount. The water intake request amount calculation unit 85 requests the facility 5 capable of continuing water intake with the updated water intake request amount.

Next, the operation of the water intake planning device 8 will be described.
FIG. 13 is a flowchart showing an example of a procedure for calculating a predicted value. The water quality prediction unit 83 acquires the predicted value of rainfall from the meteorological information system 2 (step S101). The water quality prediction unit 83 proceeds to the process in step S105.

The water quality prediction unit 83 determines whether or not the actual value of rainfall has been acquired (step S102). When the water quality prediction unit 83 has not acquired the actual rainfall amount (step S102: NO), the water quality prediction unit 83 acquires the actual rainfall amount from the facility group 100 or the database 82 (step S103).

The water quality prediction unit 83 continuously accumulates the actual value of rainfall in the database 82 (step S104). The water quality prediction unit 83 predicts the predicted value of turbidity in association with the time based on the correlation estimated in advance by the water quality prediction unit 83 and the predicted value of rainfall. The water quality prediction unit 83 transmits the predicted value of turbidity to the water demand calculation unit 85 for the facilities 5-1 to 5-N (YS).

FIG. 14 is a flowchart showing an example of a procedure for calculating the required water intake amount. The water intake request amount calculation unit 85 acquires information representing the total water intake demand amount Q from the facilities 5-1 to 5-N (step S201). The water intake request amount calculation unit 85 calculates the water intake request amount for each facility 5 based on the predicted value of turbidity and the water intake correction amount (step S202).

The water intake request amount calculation unit 85 acquires information indicating the scheduled water intake start time and information indicating the scheduled water intake stop time from the time management unit 84 for each facility 5. The water intake request amount calculation unit 85 additionally requests the facility 5 that can continue the water intake with the water intake request amount that evenly allocates the total amount of the insufficient water intake to the facility 5 that can continue the water intake. .. Hereinafter, the control for evenly allocating the total amount of insufficient water intake to the facility 5 capable of continuing water intake is referred to as "equal allocation control". The facility 5 capable of continuing water intake is the facility 5 whose current time is before the scheduled water intake stop time (step S203). The water intake request amount calculation unit 85 transmits the information indicating the water intake request amount of the facility 5-n, the information indicating the scheduled water intake start time, and the information indicating the scheduled water intake stop time to the facility 5-n via the communication unit 80. (Step S204).

The monitoring and control system 52 records in the database 50 the information indicating the water intake request amount, the scheduled water intake start time, and the scheduled water intake stop time (step S205). The monitoring control system 52 determines whether or not the upper limit of water intake is less than the required amount of water intake (step S206). When the upper limit of water intake is less than the required amount of water intake (step S206: YES), the monitoring control system 52 calculates the insufficient amount of water intake (= required amount of water intake-upper limit amount of water intake). The monitoring and control system 52 proceeds to step S210.

When the upper limit of water intake is equal to or greater than the required amount of water intake (step S206: NO), the monitoring control system 52 transmits the required amount of water intake to the water purification treatment system 53 (step S208). The monitoring control system 52 calculates the water intake margin amount (= water intake upper limit amount-water intake required amount). The monitoring and control system 52 transmits the water intake margin amount or the water intake shortage amount to the water intake planning device 8 (step S209). The water intake correction amount calculation unit 81 acquires the water intake margin amount or the water intake shortage amount via the communication unit 80 (step S210).

FIG. 15 is a flowchart showing an example of a procedure for calculating the intake correction amount. The water intake correction amount calculation unit 81 determines whether or not the equal allocation control is executed (step S301). When the equal allocation control is not executed (step S301: NO), the water intake correction amount calculation unit 81 identifies the facility 5 in which the water intake margin amount is calculated (step S302), and the facility 5 in which the water intake shortage amount is calculated. (Step S303). The water intake correction amount calculation unit 81 acquires the predicted value of turbidity for each facility 5 (step S304).

The water intake correction amount calculation unit 81 calculates the difference between the total water intake demand amount and the total water intake request amount (step S305). The water intake correction amount calculation unit 81 calculates the water intake correction amount for each facility 5 based on the predicted value of turbidity. The water intake correction amount calculation unit 81 takes the water intake shortage amount from the facility 5 in which the water intake shortage amount is calculated, and calculates the water intake correction amount for each facility 5 so as to allocate the water intake shortage amount to the facility 5 in which the water intake margin amount is calculated. To do.

The water intake correction amount calculation unit 81 may allocate all of the water intake shortages of the other facilities 5 to the facility 5 having the smallest predicted turbidity value among the facilities 5 for which the water intake margin has been calculated. The water intake correction amount calculation unit 81 may preferentially allocate the water intake shortage amount of the other facility 5 to the plurality of facilities 5 having the smaller predicted turbidity value among the facilities 5 for which the water intake margin amount has been calculated. (Step S305). When the equal allocation control is executed (step S301: YES), the water intake request amount calculation unit 85 executes step S202 shown in FIG.

FIG. 16 is a flowchart showing an example of a procedure for transmitting a scheduled time. The time management unit 84 acquires the reference turbidity of water intake stop from the database 82 (step S401). The time management unit 84 determines whether or not the predicted value of the time-series turbidity is equal to or higher than the reference turbidity (step S402). When the predicted value of the time-series turbidity does not exceed the reference turbidity (step S402: NO), the time management unit 84 repeats the process of step S402.

When the predicted value of the time-series turbidity becomes equal to or higher than the standard turbidity (step S402: YES), the time management unit 84 plans to stop water intake at the time when the predicted value of the time-series turbidity becomes equal to or higher than the standard turbidity. Set as the time. The time management unit 84 determines whether or not it is possible to start (restart) water intake after the scheduled time for stopping water intake (step S403).

If it is not possible to start water intake after the scheduled water intake stop time (step S403: NO), the time management unit 84 repeats the process of step S403. When it is possible to start water intake after the scheduled water intake stop time (step S403: YES), the time management unit 84 transmits information indicating the scheduled water intake start time to the facility 5 via the communication unit 80 (step S404). ). The time management unit 84 proceeds to step S405.

When the predicted value of the time-series turbidity becomes equal to or higher than the reference turbidity (step S402: YES), the time management unit 84 transmits information indicating the scheduled water intake stop time to the facility 5 via the communication unit 80 (step S402: YES). Step S405). The monitoring and control system 52 records in the database 50 the information indicating the scheduled water intake stop time and the information indicating the scheduled water intake start time (step S406).

FIG. 17 is a flowchart showing an example of a procedure (token passing method) in which the water intake planning device 8 controls the circulation of tokens (transmission rights) in the network. The token is, for example, a transmission right for the administrator to obtain the right to change the intake correction amount. The monitoring and control system 52 of the administrator who intends to contribute to solving the total amount of water intake shortage changes the water intake correction amount of the facility 5 by the administrator operating the keyboard and the like of the monitoring and control system 52 to obtain tokens. can do.

The communication unit 80 distributes the information indicating the scheduled water intake stop time and the information indicating the scheduled water intake start time to the facility 5 via the network (step S501). The communication unit 80 circulates tokens through a network among a plurality of facilities 5. The communication unit 80 may set an upper limit on the number of times the token is circulated (step S502).

The monitoring control system 52 determines whether or not the token has been acquired (step S503). If the token has not been acquired (step S503: NO), the monitoring and control system 52 repeats step S503. When the token is acquired (step S503: YES), the monitoring control system 52 accepts a manual operation on an operation unit such as a keyboard (step S504). The communication unit 80 suspends the patrol of tokens (step S505).

As described above, the water intake planning device 8 of the embodiment includes a water quality prediction unit 83, a water intake request amount calculation unit 85, and a communication unit 80. The water quality prediction unit 83 predicts the water quality according to the predicted value of the rainfall based on the correlation between the actual value of the rainfall and the actual value of the water quality. The water intake request amount calculation unit 85 calculates the water intake request amount for each facility 5 based on the prediction result of the water quality. The communication unit 80 transmits information representing the water intake request amount to at least one facility 5.

As a result, the water intake planning device 8 of the embodiment can improve the water supply capacity of the water intake system 1.

The water intake planning device 8 of the embodiment can exchange water from different water sources 200 between different facilities 5 to improve the water supply capacity of the water intake system 1. The water intake planning device 8 of the embodiment can notify the manager of the facility 5 of the scheduled water intake stop time and the water intake start scheduled time. The manager of the facility 5 can reliably execute the operations for stopping the water intake and starting the water intake based on the scheduled time for stopping the water intake and the scheduled time for starting the water intake.

The water intake planning device 8 of the embodiment can predict the turbidity of water related to the facility 5 based on the actual value group recorded in advance in the database 50 of the facility 5. The water intake planning device 8 of the embodiment can improve the water supply capacity of the water intake system 1 without acquiring information on the configuration of the facility 5. The information regarding the configuration of the facility 5 is, for example, information regarding the diameter of the water pipe and information indicating the water intake capacity of the pump. The water intake planning device 8 of the embodiment can estimate the correlation with respect to the predicted value of the water quality of the water source by machine learning the correlation with respect to the water of the facility 5 based on the actual value. The water intake planning device 8 of the embodiment can reduce the operating cost of the water intake system 1. The water intake planning device 8 of the embodiment can reduce the environmental load.

In addition, considering the social situation in Japan, where the population is declining, there are problems (a) to (d) to be solved in the entire water supply business.

(A) Elimination of the decline in toll income due to the decrease in the water supply population (b) Elimination of the shortage of human resources due to the retirement of engineers and field workers, and inheritance of technologies such as the know-how of engineers and field workers ( c) Improvement and renewal of facilities rapidly constructed during the period of high economic growth, smoothing of peaks of facility improvement and renewal, and securing of financial resources for facility improvement and renewal (d) The following (i) to (iii) Responding to the consolidation and abolition of facilities and promoting wide-area management based on the solutions to the issues shown in

(I) Reduced the occurrence of obstacles to water purification treatment due to increased turbidity of raw water in an emergency when the quality of raw water deteriorates (ii) Suspension or restriction of water intake due to deterioration of raw water quality Improvement of water supply capacity in an emergency (iii) By preferentially taking in clean raw water to prevent drought, the cost and environmental load associated with the water supply business are reduced.

The mission of the water system, which is an important lifeline, is to continue water supply as much as possible even in a social situation where the population is declining. The mission of the water system is the same as in normal times, even in emergencies when the quality of raw water deteriorates. Since the water intake planning device 8 of the embodiment has improved water supply capacity even in an emergency when the water quality of the raw water deteriorates, it is possible to solve the problems (i) to (iii).

According to at least one embodiment described above, the water quality prediction unit that predicts the water quality according to the predicted value of the rainfall based on the correlation between the actual value of the rainfall and the actual value of the water quality, and the water treatment By having a water intake requirement calculation unit that calculates the water intake requirement, which is the water intake required for the facility, for each facility based on the prediction result of the water quality, the water supply capacity of the water intake system can be improved.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Water intake system, 2 ... Meteorological information system, 3 ... Upstream point measurement device, 4 ... Water intake point measurement device, 5 ... Facility, 6 ... Joint well, 7 ... Reservoir, 8 ... Water intake planning device, 20 ... Actual value memory Unit, 21 ... Predicted value storage unit, 22 ... Transmission unit, 30 ... Transmission unit, 40 ... Transmission unit, 50 ... Database, 51 ... Demand forecast system, 52 ... Monitoring and control system, 53 ... Water treatment system, 80 ... Communication unit , 81 ... Water intake correction amount calculation unit, 82 ... Database, 83 ... Water quality prediction unit, 84 ... Time management department, 85 ... Water intake request amount calculation unit, 100 ... Facility group, 200 ... Water source, 530 ... Pump, 513 ... Water treatment Department

Claims (7)

A water quality prediction unit that predicts the water quality according to the predicted rainfall amount based on the correlation between the actual rainfall amount and the actual water quality value.
A water intake request amount calculation unit that calculates the water intake request amount, which is the water intake amount required for the facility related to water treatment, for each facility based on the prediction result of the water quality.
A communication unit that transmits information representing the water intake request amount to at least one facility, and a communication unit.
It is provided with a water intake correction amount calculation unit that calculates the water intake correction amount, which is the correction amount of the water intake request amount, for each facility and updates the water intake request amount according to the calculated water intake correction amount .
The water intake correction amount calculation unit needs to reduce the facility and the water intake requirement amount to which the water intake request amount can be added based on the margin amount or the shortage amount of the water intake upper limit amount with respect to the water intake request amount. Identify the facility, update the water intake requirement for the identified facility, and
The communication unit transmits the updated water intake request amount to the facility.
Water intake planning device. It is further equipped with a time management unit that determines the scheduled water intake start time, which is the scheduled start time of water intake, and the scheduled water intake stop time, which is the scheduled time to stop water intake, based on the predicted result of the water quality.
The water intake planning device according to claim 1, wherein the communication unit transmits information representing the scheduled water intake start time and information representing the scheduled water intake stop time to the facility. When the water quality is turbidity, the water intake correction amount calculation unit calculates the water intake correction amount for each facility so as to preferentially increase the water intake requirement during the period when the predicted value of the turbidity is small. The water intake planning device according to claim 1 or 2. The water quality prediction unit defines the actual value of the water quality having the correlation with the actual value of the rainfall similar to the predicted value of the rainfall as the predicted value of the water quality, according to claims 1 to 3. The water intake planning device according to any one of the above. Claims 1 to claim that the water quality prediction unit predicts the water quality according to the predicted value of the flow rate based on the correlation between the actual value of the flow rate according to the amount of rainfall and the actual value of the water quality. The water intake planning device according to any one of 4. Multiple facilities with a water treatment unit, which is a device that applies predetermined treatment to water,
A water quality prediction unit that predicts the water quality according to the predicted rainfall amount based on the correlation between the actual rainfall amount and the actual water quality value.
A water intake request amount calculation unit that calculates the water intake request amount, which is the water intake amount required for the facility, for each facility based on the prediction result of the water quality.
A communication unit that transmits information representing the water intake request amount to at least one facility, and a communication unit .
A water intake planning device having a water intake correction amount calculation unit that calculates a water intake correction amount that is a correction amount of the water intake request amount for each facility and updates the water intake request amount according to the calculated water intake correction amount.
With
The water intake correction amount calculation unit needs to reduce the facility and the water intake requirement amount to which the water intake request amount can be added based on the margin amount or the shortage amount of the water intake upper limit amount with respect to the water intake request amount. Identify the facility, update the water intake requirement for the identified facility, and
The communication unit transmits the updated water intake request amount to the facility.
Water intake system. It is a water intake planning method executed by the water intake planning device.
A step of predicting the water quality according to the predicted value of the rainfall based on the correlation between the actual value of the rainfall and the actual value of the water quality, and
A step of calculating the water intake requirement amount, which is the water intake amount required for the facility related to water treatment, for each facility based on the prediction result of the water quality.
A step of transmitting information representing the water intake requirement to at least one of the facilities, and
Wherein the intake correction amount is a correction amount of intake demand calculated for each of the facilities, viewed contains a water intake correction amount calculating step of updating the intake required amount according to the calculated the intake correction amount,
In the water intake correction amount calculation step, it is necessary to reduce the facility and the water intake requirement amount to which the water intake request amount can be added based on the margin amount or the shortage amount of the water intake upper limit amount with respect to the water intake request amount. Identify the facility, update the water intake requirement for the identified facility,
In the transmitting step, the updated water intake request amount is transmitted to the facility.
Water intake planning method.

Images