JP6095494B2 - Emergency shut-off valve control device and emergency shut-off valve control method - Google Patents

Description

  The present invention relates to an emergency shut-off valve control device and an emergency shut-off valve control method for performing opening / closing control of an emergency shut-off valve provided in a water pipe connecting a water storage tank and a water distribution area.

  The tap water produced at the water purification plant is supplied to the entire distribution area from a plurality of water tanks provided in each distribution area. In the water tank, an emergency shut-off valve is installed for the purpose of preventing outflow of tap water due to damage of the water tank itself or a water pipe connected thereto. When the emergency shut-off valve receives a valve closing signal from the control device, the emergency shut-off valve immediately starts closing operation and shifts to the valve closing state.

  In the event of an earthquake, an emergency shut-off valve provided in each water tank after a disaster has occurred in order to secure the necessary emergency water supply throughout the water distribution area and to be able to handle transport water to medical institutions and evacuation centers. It is necessary to close the valve quickly. On the other hand, tap water is used not only for drinking water and medical water, but also for daily use, urban activity water, industrial activity water, and firefighting water. It is. Necessary emergency water supply, domestic water supply, etc. vary from one water distribution district to another depending on the population composition and industrial structure of each water distribution district. In addition, since the operation of opening the emergency shut-off valve that has been closed is a manual operation, it takes a long time to recover to the open state, and turbid water called so-called red water flows out of the faucet after the start of water flow. It is desirable to avoid closing the shut-off valve as much as possible. Therefore, whether or not to close the emergency shut-off valve of the water tank in the event of a disaster needs to be determined quickly and accurately for each water distribution area in consideration of these circumstances.

  However, since the demand for tap water is affected by human life and economic activities and shows large fluctuations within 24 hours, the amount of water stored in individual water tanks also changes every moment. Therefore, it is extremely difficult for a person to quickly and accurately determine whether or not to close a plurality of emergency shut-off valves when a disaster occurs. Conventionally, in view of such circumstances, a detection device such as a seismometer, a flow meter or a water level meter that detects an emergency situation of a water tank, and a drive device for a water blocking valve based on a detection signal from the detection device And a control device that automatically determines whether or not the shut-off valve needs to be closed based on the detection data of the detecting device, and performs a technique for controlling the opening and closing of the shut-off valve (for example, , Refer to claim 1 of Patent Document 1). Also, in order to prevent delays in closing the emergency shut-off valve in the event of an earthquake, the relay shut-off unit is provided in correspondence with each emergency shut-off valve instead of closing the emergency shut-off valve according to a command from the central monitoring device. Has been proposed to directly close the emergency shut-off valve (see, for example, claim 1 of Patent Document 2).

  According to the technique disclosed in Patent Document 1, when the seismometer, flow meter or water level meter detects a preset seismic intensity, excessive flow rate or abnormally low water level, the impermeable valve is automatically opened from the fully open state to the fully closed state. Therefore, the water storage tank can be impermeable quickly and reliably when an earthquake occurs.

  According to the technique disclosed in Patent Document 2, the emergency shut-off valve is closed directly by the relay unit provided corresponding to each emergency shut-off valve. Compared with the case where a control signal is sent to the valve, the closing operation of the emergency shut-off valve can be speeded up, and a large amount of water can be prevented from flowing out.

JP-A-9-256426 JP 2002-30702 A

  However, since the techniques described in Patent Documents 1 and 2 are configured to automatically shut off the water shut-off valve (emergency shut-off valve) when the detection device detects an abnormality, it is necessary to secure an emergency water supply amount. Although it is effective, there are cases where water cannot be supplied to the water distribution area at all and the lives of the residents are inconvenient. In other words, in the event of a disaster such as an earthquake, it is most important to secure an emergency water supply for emergency water supply to medical facilities and public facilities. However, if the emergency water supply is secured, surplus water will be used for domestic use. It is desirable to continue water supply to water distribution areas as water for urban activities, water for industrial activities, and water for fire fighting. Even with the techniques described in Patent Documents 1 and 2, it is possible to supply water such as domestic water by reopening the water shut-off valve (emergency shut-off valve). It takes a long time to open the valve), and turbid water flows out of the faucet after the start of water flow.

  Further, Patent Document 1 describes a technique for detecting an excessive flow rate and an abnormally low water level and closing a water shielding valve. However, even if the outflow side pipe in the water tank is broken, an abnormality is detected immediately. However, since an abnormality is detected only after a certain amount of time has elapsed since the start of water leakage, the technique described in Patent Document 1 cannot quickly close the shut-off valve when an abnormality occurs. In addition, in order to close the impermeable valve based on the detection signal from the flow meter or water level meter, it is necessary for the control device to continuously collect the detection signal from the flow meter or water level meter. Occasionally, the risk of damage to the detection unit and the signal transmission unit of the detection device increases, so that there may be a case where the control device cannot continuously collect detection signals from the flow meter or water level meter after the occurrence of an earthquake. Since the technique described in Patent Document 1 is based on the premise that the control device can continuously collect detection signals from the flow meter or water level meter, the shut-off valve is not used despite the occurrence of excessive flow rate or abnormally low water level. There is a case where the valve cannot be closed, and it is impossible to guarantee the reserved water in the water tank. Such inconvenience not only occurs when the detection unit or signal transmission unit of the detection device is damaged due to the occurrence of an earthquake, but also when the power source of the detection device is damaged or when the power source of the storage battery is lost over time. Occur as well.

  The present invention has been made in view of the actual situation of the prior art as described above, and at the time of occurrence of an earthquake, the necessity of closing a plurality of emergency shut-off valves is promptly and accurately determined, and the necessary emergency water supply amount is secured. Above, let it be a subject to enable continuous water flow, such as domestic water, as much as possible.

  In order to solve the above-described problems, the present invention provides a plurality of water storage facilities, a monitoring device that continuously monitors the water storage state of the plurality of water storage facilities, and a network that interconnects the water storage facility and the monitoring device. The water storage facility includes a water storage tank, an emergency shut-off valve installed in a water pipe communicating with the water tank, a control device that controls opening and closing of the emergency shut-off valve, and an earthquake measuring device, and the monitoring Based on data transmitted from the control device via the network and initial setting data including a target emergency water supply amount stored in advance in the data storage unit, the device needs to close the emergency shutoff valve. The valve closing necessity data obtained by the calculation is sequentially transmitted to the control device via the network, and the control device is output from the seismic measurement device. When the seismic measurement data exceeds the reference value, the emergency shut-off valve is switched from the opened state to the closed state based on the latest valve closing necessity data stored in the valve closing necessity storage unit at that time. Or maintaining the valve open

  According to the present invention, based on the transmission data from the control device and the initial setting data including the target emergency water supply amount stored in advance in the data storage unit, the valve closing necessity data for the emergency shutoff valve is calculated. It is possible to ensure the amount of emergency water supply required by each district. In addition, emergency shut-off valves other than emergency shut-off valves that have been determined to be closed must be kept open, so that necessary emergency water supply is ensured and water flow for domestic use is maintained. Can do.

It is a block diagram of the emergency cutoff valve control apparatus which concerns on embodiment. It is a figure which shows the hardware constitutions of the monitoring apparatus which concerns on embodiment. It is a figure which shows an example of the initial setting data memorize | stored in the data storage part of the monitoring apparatus which concerns on embodiment. It is a figure which shows an example of the time series data memorize | stored in the data storage part of the monitoring apparatus which concerns on embodiment. It is a flowchart which shows the process sequence of the stored water amount calculating part which concerns on embodiment. It is a flowchart which shows the process sequence of the order | rank calculating part which concerns on embodiment. It is a flowchart which shows the process sequence of the valve closing necessity calculating part which concerns on embodiment. It is a figure which shows the structure of the control apparatus which concerns on embodiment. It is a figure which shows the hardware constitutions of the control apparatus which concerns on embodiment. It is a flowchart which shows the process sequence of the determination process part which concerns on embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an emergency shut-off valve control device and an emergency shut-off valve control method according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the emergency shut-off valve control device according to the embodiment includes a facility 100A for supplying tap water to the district A, a facility 100B for supplying tap water to the district B, and a facility for supplying tap water to the district C. The monitoring device 8 is configured to centrally control the operation of the facility 100D for supplying tap water to 100C, the district D, the facility 100E for supplying tap water to the district E, and the facility 100F for supplying tap water to the district F. . The monitoring device 8 considers the supply and demand of tap water in the entire water distribution area 20 that is a set of individual areas A, B, C, D, E, and F. The facilities 100A, 100B, 100C, 100D, 100E, and 100F Control operation.

  The facility 100 </ b> A includes a water tank 4, and water from an upstream water facility (not shown) such as a water purification plant or a water distribution plant flows into the water tank 4 through an inflow pipe 5. The water stored in the water storage tank 4 is distributed from the outflow pipe 6 to the individual area A in the distribution area 20. The water storage tank 4 has a function for adjusting the time fluctuation of the amount of water supplied from the upstream side water supply facility and the downstream side demand amount, a function for reducing the effect of water outage on the consumer according to the amount of stored water, and drinking water when an earthquake disaster occurs. And the function of storing emergency water required for life support such as medical water. An emergency shutoff valve 7 is installed on the outlet side of the water storage tank 4. The emergency shut-off valve 7 is installed for the purpose of preventing the outflow of stored water due to damage or stoppage of the water supply facility in the event of an earthquake, and mainly securing emergency water supply such as drinking water and medical water. The emergency shut-off valve 7 may be installed on the inflow side of the water storage tank 4 or may be installed in a place away from the inflow side of the water storage tank 4 and the outlet. When the emergency shut-off valve 7 receives a valve closing signal from the control device 1, it immediately mechanically starts the valve closing operation.

  In addition, the facility 100A is provided with a control device 1, an earthquake measuring device 2, and a water level measuring device 3, and the water level measuring device 3 continuously measures the water level of the water tank 4, for example, 1 to 5V. It is converted into water level measurement data and output to the control device 1.

  The earthquake measuring device 2 quantifies the intensity of the earthquake (earthquake intensity) as, for example, measured seismic intensity, seismic intensity class, maximum acceleration, or the like. The earthquake measuring device 2 continuously measures the intensity of the earthquake, converts it into, for example, 1-5 V earthquake intensity measurement data, and outputs it to the control device 1.

  The control device 1 is connected to the monitoring device 8 via the network 21, and constantly transmits the water level measurement data measured by the water level measurement device 3 and the measurement time acquired from the timer 1 a to the monitoring device 8. The control device 1 always receives and stores the valve closing necessity data transmitted from the monitoring device 8. The valve closing necessity data is data indicating whether or not the emergency shutoff valve 7 calculated by the monitoring device 8 is to be closed, and details will be described later. The control device 1 controls the valve closing signal to the emergency shutoff valve 7 based on the earthquake intensity measurement data from the earthquake measuring device 2 and the valve closing necessity data from the monitoring device 8.

  The facilities 100B, 100C, 100D, 100E, and 100F are configured similarly to the facility 100A. However, the water tanks 4 of the facilities 100A, 100B, 100C, 100D, 100E, and 100F may have different bottom areas depending on the characteristics of the individual districts A, B, C, D, E, and F that they are responsible for.

  As shown in FIG. 1, the monitoring device 8 includes a data communication unit 80, a water storage amount calculation unit 81, a valve closing necessity calculation unit 82, a data storage unit 83, and a rank calculation unit 84, and each facility 100B, 100C. From the water level measurement data of each water tank 4 provided in 100D, 100E, 100F, the valve closing necessity data of the emergency shut-off valve 7 provided in each water tank 4 is calculated. Moreover, the valve closing necessity data calculated | required by calculation are transmitted to each control apparatus 1 with which each facility 100B, 100C, 100D, 100E, 100F was equipped. The data storage unit 83 is accessed from the data communication unit 80, the water storage amount calculation unit 81, and the valve closing necessity calculation unit 82.

  FIG. 2 shows a hardware configuration of the monitoring device 8. As is apparent from this figure, the monitoring device 8 of this example is configured by a PC (Personal Computer) or the like, and includes a CPU (Central Processing Unit) 801, a RAM (Random Access Memory) 802, and an HD (Hard Disk) 803. The communication interface 804 and the input / output interface 805 are connected to each other via a bus 806. A display device 807 such as an LCD and a mouse / keyboard 808 as an input device are connected to the input / output interface 805. The network 21 is connected to the communication interface 804.

  The data communication unit 80, the water storage amount calculation unit 81, the valve closing necessity calculation unit 82, and the rank calculation unit 84 illustrated in FIG. 1 are arranged in the RAM 802 and are implemented by being executed by the CPU 801. 1 is disposed in the HD 803, and is accessed from the water storage amount calculation unit 81, the valve closing necessity calculation unit 82, and the data communication unit 80. The execution timing of the data communication unit 80, the stored water amount calculation unit 81, the valve closing necessity calculation unit 82, and the rank calculation unit 84 is the timing when the communication interface 804 receives data from the network 21, and the input / output interface 805 is the mouse / keyboard 808. The timing at which the input from the data is received, the timing at which the data in the data storage section 83 is updated, the timing at which the processing of the data communication section 80, the stored water volume calculation section 81, the valve closing necessity calculation section 82, the rank calculation section 84 is completed, Realized by being executed at regular intervals. Further, the data stored in the data storage unit 83 of FIG. 1 is input or corrected by the mouse / keyboard 808, and the data stored in the data storage unit 83 is output and displayed on the display device 807.

  The data communication unit 80 is connected to each control device 1 provided in each facility 100A, 100B, 100C, 100D, 100E, and 100F via the network 21, and receives the latest water level measurement data from each control device 1. For example, it is received at a period of 0.1 second, a period of 0.5 second, a period of 1 second, a period of 10 seconds, and the like. Moreover, the water level measurement time is generated at the timing when the water level measurement data is received. These water level measurement data and water level measurement time data are stored in the data storage unit 83 in time series. The storage timing can be, for example, a 1 second period, a 10 second period, a 1 minute period, a 10 minute period, or the like.

  In addition, the data communication unit 80 reads the valve closing necessity data stored in the data storage unit 83 and transmits the data to the control devices 1 via the network 21. The data transmission timing from the monitoring device 8 to the control device 1 may be, for example, an event in which the valve closing necessity calculator 82 has finished processing or an event in which the valve closing necessity data is stored in the data storage unit 83. it can.

  The data storage unit 83 stores initial setting data 830 illustrated in FIG. In the example of FIG. 3, the initial setting data 830 includes a target water amount field 831, a water tank facility information field 832, a water tank anti-vibration field 833, and an individual district information field 834.

  In the target water quantity field 831, the target water quantity of emergency water supply that must be secured in the entire water distribution area 20 at the time of the earthquake disaster, and the ranking condition (conformity condition) of the water tank are initially set. Here, the entire water distribution area 20 is a water distribution area where water can be distributed from the respective storage tanks 4 provided in the facilities 100A, 100B, 100C, 100D, 100E, and 100F, and the individual areas A, B, C, D, and E , F. In addition, the individual areas A, B, C, D, E, and F are areas where the tap water can be supplied from the water tank 4 provided in the corresponding facility, that is, the water tank 4 provided in the corresponding facility is damaged. This is a district where water is cut off when the tap water supply function is lost.

  The target water volume is the target value of the emergency water supply amount that should be secured in the entire distribution area 20 and takes into account the number of medical institutions and public institutions, the number of private houses, the number of establishments, etc. existing in the distribution area 20 Is set for each water distribution area 20. For example, the target water amount value is set higher for the water distribution district 20 having a larger number of medical institutions and public institutions.

  Further, the ranking condition (conformity condition) of the water tank is the ranking of the emergency shut-off valve 7 that is closed preferentially, and various data stored in the data storage unit 83, ascending order, descending order, AND, OR, It is described by a combination of four arithmetic operations. For example, “water storage amount AND ascending order” illustrated in FIG. 3 means that the emergency shutoff valve 7 is set to close in the order of the water storage tank 4 having the largest water storage amount. In general, in order to secure a necessary amount of emergency water supply, it is more advantageous in terms of management to manage the water storage for a small number of water storage tanks 4 having a large amount of water storage. Therefore, when there is no difference in the seismic degree of each water tank 4 and the seismic degree of the water pipe, the ranking condition (conformity condition) of the water tank is set to “water storage AND ascending order”. On the other hand, if there is a difference in the degree of earthquake resistance of each water tank 4 and the degree of earthquake resistance of the water tank 4 having a large amount of water storage is not necessarily high, in order to ensure the necessary emergency water supply amount, The tank rank condition (conformity condition) is set as “water tank vibration resistance AND ascending order”. In addition, if there is a difference in the seismic degree of each water pipe, and the seismic degree of the water pipe connected to the water storage tank 4 having a large amount of water storage is not necessarily high, The tank rank condition (conformity condition) is “water pipe vibration resistance degree ascending order”. Furthermore, in the water distribution district 20 where there are few medical institutions and public facilities, and there are many private houses and offices, the necessary water supply can be secured with the small reservoir 4 so that a large amount of water for domestic use, urban activity water, In order to supply industrial activity water and fire-fighting water to the water distribution area, the ranking condition (conformity condition) can be set to “water storage AND descending order” or the like. As described above, the emergency shut-off valve control device according to the present embodiment can appropriately set the ranking condition (conformity condition) of the water storage tanks according to the characteristics of the water distribution area 20, so that the necessary emergency water supply amount can be secured. And maintaining water supply such as domestic water.

  In the water tank facility information field 832, information related to the water storage facilities 100 </ b> A to 100 </ b> F, such as information related to facility management such as the water tank number (i) and the facility name, and the bottom area A (i) of the water tank 4 is initialized. Thus, in this embodiment, since the information regarding the water storage facilities 100A to 100F is stored in the data storage unit 83, the water tank facility may be used depending on some circumstances such as maintenance cleaning or an accident. Even when any one of 100A to 100F is in the operation stop state, it can be dealt with only by changing the data set in the water tank facility information 832 in the initial setting data.

  In the water tank anti-vibration field 833, information regarding the importance and durability of the water tank 4 such as the importance B (i) of the water tank 4 and the vibration resistance C (i) of the water tank 4 is initially set. Here, the importance of the water tank 4 means, for example, facilities that should be able to pass water as much as possible even in the event of an earthquake, facilities that are directly connected to the water main, facilities with a large water supply population, and serious secondary disasters. This is a facility that has a high possibility of waking up, and is represented by a numerical value of 0.0 to 1.0. The importance 1.0 is the facility with the highest importance. The importance decreases as the importance decreases, and the importance 0.0 is the facility with the lowest importance. Moreover, the vibration-proof degree of the water tank 4 is a grade of the vibration-proof performance of the water tank 4, for example, is represented by the numerical value of 0.0-1.0. A seismic resistance of 1.0 means seismic resistance that can be used without any damage even in the event of an earthquake, and a seismic resistance of 0.8 means seismic resistance that can maintain the function even if minor damage occurs. 5 is classified as an earthquake resistance degree that can be restored early even if damage occurs, and an earthquake resistance degree 0.3 is classified into an earthquake resistance degree that requires time for restoration when damage occurs. As described above, the emergency shutoff valve control device according to the present embodiment initially sets the importance B (i) of the water tank 4 in the data storage unit 83 of the monitoring device 8, so that it is stored in a water storage facility having a high importance. Tap water can be preferentially left, and emergency water supply can be ensured. In addition, it is possible to maintain the water flow as much as possible after securing the necessary emergency water supply.

  In the water distribution area information field 834, the individual pipes A, B, C, D, E, and F have the vibration resistance D (i) of the water pipes, the number of medical facilities and public facilities E (i), and the number of private houses F. (I) Initially set the number of establishments G (i), the number of fire extinguishing tanks, and the like. As described above, the emergency shutoff valve control device according to the present embodiment stores, in the data storage unit 83 of the monitoring device 8, the vibration resistance degree D (i) of the water pipe for each individual area, the number E of medical facilities and public facilities ( i), the number of private houses F (i), the number of establishments G (i), and the number of fire-fighting tanks are initially set, so that it is possible to ensure the necessary emergency water supply amount according to the actual situation of each district. Water can be maintained as much as possible.

  The initial setting of the initial setting data 830 may be performed by input with the mouse / keyboard 808 and display on the display device 807, or the previous target water amount field 831, water tank facility information field 832, water tank anti-vibration field 833. The calculation may be automatically performed from the initial setting data in the individual district information field 834. Further, for example, the target water amount in the target water amount field 831 is automatically calculated based on the number of medical facilities and public facilities, the number of private houses, the number of establishments, the number of fire fighting tanks, etc. in the water distribution area information field 834. Also good.

  The data storage unit 83 stores time series data 850 illustrated in FIG. The time series data 850 is composed of records for each water level measurement time 851. The record stores water level measurement data for each water level measurement time and each water tank 4. Further, the record stores calculation data such as a water storage amount calculated based on the water level measurement data, a total water storage amount value, and valve closing necessity data for each water tank 4. In the example of FIG. 4, one record includes a time field 851, a water tank field 852, a storage amount total value field 853, and a reserved water amount field 834. These records are sequentially added to the time series data 850 in time series at the timing when the monitoring device 8 receives the water level measurement data.

  In the time field 851, the water level measurement time generated at the timing when the water level measurement data is acquired is stored simultaneously with the record creation. In the water tank field 852, the water level measurement data L (i) for each water tank acquired at the water level measurement time in the time field 851 is stored simultaneously with the record creation. Further, the water storage amount W (i) calculated by the water storage amount calculation unit 81 based on the water level measurement data L (i) and the valve closing necessity data Y (i) calculated by the valve closing necessity calculation unit 83 are used. Store. The stored amount total value field 853 stores the stored water amount total value X calculated by the stored amount calculating unit 81 based on the stored amount W (i) of the water tank field 852. The reserved water amount field 834 stores the reserved water amount Z calculated by the valve closing necessity calculation unit 83 based on the water storage amount W (i) of the water tank field 852 and the valve closing necessity data Y (i).

  The water storage amount calculation unit 81 calculates a water storage amount for each water storage tank by calculating the product of the water level measurement data in the data storage unit 83 and the water tank bottom area, and further calculates a total water storage amount value by calculating each water storage amount. To do. These calculated data are stored in time series data in the data storage unit 83. The stored water amount calculation unit 81 is activated at the timing when the water level measurement data is stored in the data storage unit 83. Further, the water storage amount calculation unit 81 may be activated with, for example, a 0.1 second period, a 0.5 second period, a 1 second period, a 10 second period, and the like.

  Next, referring to FIGS. 3 and 4, the processing procedure in the stored water amount calculation unit 81 will be described along FIG. 5.

  First, in step S810, it is determined whether a new record illustrated in FIG. 4 has been created. For example, when it is determined that there is no water storage amount in the water tank field 852 even though the water level measurement time exists in the time field 851 of the record and the water level measurement data exists in the water tank field 852 (Yes in S810). The process proceeds to S811, and otherwise (when determined to be none in S810), the process returns to the start.

  In step S811, the water tank number i is initialized to “1”. In step S812, the water tank number i is set to “1”, and the water level measurement data L (i) stored in the water tank field 852 of the new record is read. In step S813, the water tank bottom area A (i) of the water tank number i stored in the water tank facility information field 832 of the initial setting data 830 illustrated in FIG. 3 is read. In step S814, the product of the water level measurement data and the water tank bottom area is calculated by the following equation (1) to calculate the water storage amount W (i) of the water tank number i.

W (i) = A (i) × L (i) (1) Formula i: Water tank number (i = 1 to N, N: Total number of water tanks)
W (i): Reservoir number A = i water storage amount A (i): Reservoir number = i bottom area L (i): Reservoir number = i water level measurement data Next, in step S815, the calculation in step S814 The result is stored in the water storage amount W (i) in the water tank field 852. In step S816, “1” is added to the water tank number i, and the water tank number i is compared with the total number N of water tanks. If it is determined that it is incomplete (i ≦ N), the process returns to step S811, and steps S811 to S815 are executed again. If it is determined in step S816 that the process is complete (i> N), the process returns to step S810 to determine again whether there is a new record.

  As described above, the water storage amount calculation unit 81 calculates the water storage amount by executing the processing from step S810 to step S816 at the timing when the water level measurement time and the water level measurement data are stored in the data storage unit 83. As described above, the emergency shut-off valve control device according to this embodiment includes the water level measurement data L (i) detected by the water level measurement device 3 and the water storage tank 4 stored in the data storage unit 83 of the monitoring device 8. Since the water storage amount of each water tank 4 is obtained from the bottom area A (i), the configuration of the emergency shut-off valve control device and the calculation of the water storage amount can be simplified.

  The rank calculation unit 84 generates a rank table according to the rank condition stored in the data storage unit 83. The activation timing of the valve closing necessity calculation unit 82 may be an event in which the processing of the water storage amount calculation unit 81 is completed or an event in which the water storage amount is stored in the data storage unit 83.

  Next, the processing procedure in the rank calculation unit 84 will be described along FIG. 6 with reference to FIGS.

  First, in step S841, the order condition stored in the target water amount field 831 of the initial setting data 830 illustrated in FIG. 3 is read.

  In step S842, the ranking condition read in S841 is executed, and the result is stored in the ranking table R (j). Here, j is a rank and indicates a value of 1, 2, 3,... N. For example, when the ranking condition is “storage amount AND ascending order”, the storage tank numbers are rearranged in descending order of the storage amount W (i) stored in the storage tank field 851 illustrated in FIG. Output to. As described above, the rank table R (j) in which the water tank number is stored is generated based on the rank condition stored in the target water volume field 831 and the water volume stored in the water tank field 851.

  The valve closing necessity calculating unit 82 calculates the valve closing necessity data of each water tank based on the ranking table, the water storage amount stored in the data storage unit 83, the target water amount, and the ranking condition. The calculation result of the valve closing necessity calculation unit 82 is stored in the time series data of the data storage unit 83. In addition, the activation timing of the valve closing necessity calculation unit 82 may be an event or the like when the rank calculation unit 84 generates a rank table.

  Next, a processing procedure in the valve closing necessity calculator 82 will be described along FIG. 7 with reference to FIGS. 3 and 4. In the following description, a case where the ranking condition is “amount of stored water AND ascending order” will be described as an example.

  First, in step S822, the rank table R (j) generated by the rank calculation unit 84 is read. In step S823, all the valve closing necessity data Y (i) of the water tank number i are initialized to “No”. Here, the valve closing necessity data Y (i) stores “necessary” when the emergency shut-off valve 7 of the water tank number i needs to be closed, and “no” when the closing is unnecessary. The Further, the reserved water amount Z is initialized to “0”. Further, the rank j of the rank table R (j) which is a one-dimensional array table is initialized to “1”.

  In step S824, the water tank number i stored in the rank j of the rank table R (j) is read. In step S825, the water storage amount W (i) of the water tank number i read in step S824 is read. In step S826, the water storage amount W (i) read out in step S825 is added to the reserved water amount Z, and the valve closing necessity data Y (i) of the water tank number i is set to “necessary”. In step S827, “1” is added to the rank j. In step S828, the target water amount stored in the target water amount field 831 (see FIG. 3) of the initial setting data 830 is compared with the reserved water amount Z stored in the time series data 850 (see FIG. 4), and Z ≧ It is determined whether or not the target water amount is reached. Further, the rank j is compared with the total number of water tanks N, and it is determined whether or not j ≧ N. If it is determined in step S828 that the reserved water amount Z is less than the target water amount and the rank j is equal to or less than the total number of water tanks N (NO), the process proceeds to step S824, and steps S823 to S828 are repeatedly executed. To do. If it is determined in step S828 that the reserved water amount Z is greater than or equal to the target water amount, or the rank j exceeds the number N of reservoirs (YES), the process proceeds to step S829. In step S829, the reserved water amount Z in the entire water distribution area 20 and the valve closing necessity data Y (i) for each water storage tank are stored in the water tank field 852 of the time series data 850 shown in FIG. To do.

  6 and 7, the ranking condition has been described as “water storage AND ascending order”. However, the importance B (i) and the water tank vibration resistance C () stored in the initial setting data 830 of the storage unit 83 are described. i), individual district water pipe vibration resistance D (i), individual district medical / public facilities ratio E (i), individual district private house ratio F (i), individual district establishment ratio G (i), etc. It may be ascending or descending. For example, the sorting conditions are: the order of increasing the vibration resistance of the water tank, the order of decreasing the vibration resistance of water pipes in the water distribution area, the order of medical facilities and public facilities in the water distribution area, the order of few private houses in the water distribution area It is also possible to order in the order of few private houses in the water distribution area and in order of few establishments in the water distribution area. In addition, a plurality of rank conditions may be combined, such as “water storage amount AND ascending order” AND “water tank vibration resistance AND ascending order”. By doing in this way, the water storage amount corresponding to the water level measurement data for each water tank, the necessity of closing the emergency shutoff valve for each water tank, and the reserved water amount in the water distribution area are calculated and stored in the data storage unit 82. be able to.

  Next, the configuration of the control device 1 will be described with reference to FIG.

  As illustrated in FIG. 8, the control device 1 includes a signal input unit 11, a valve closing necessity storage unit 12, a determination processing unit 13, and a data communication unit 14.

The signal input unit 11 continuously acquires the seismic intensity measurement data from the seismic measurement device 2 and the water level measurement data from the water level measurement device 3, respectively, and stores these data together with the measurement time data. The signal input unit 11 outputs the water level measurement data and the measurement time data to the determination processing unit 13 and the data communication unit 14, and outputs the earthquake intensity measurement data and the measurement time data to the determination processing unit 13. Transmits the water level measurement data received from the signal input unit 11 to the monitoring device 8 via the network 21. Further, the data communication unit 14 continuously receives the closing necessity data of the emergency shutoff valve 7 from the monitoring device 8 via the network 21 and stores it in the closing necessity storage unit 12.

  The valve closing necessity storage unit 12 stores the valve closing necessity data output from the data communication unit 14. In the valve closing necessity storage unit 12, only the latest valve closing necessity data may be stored, or a plurality of valve closing necessity data having different measurement times may be stored in time series.

  The determination processing unit 13 determines whether or not the emergency shut-off valve 7 needs to be closed based on the seismic intensity measurement data output from the signal input unit 11 and the valve closing necessity data output from the valve closing necessity storage unit 12. judge. The determination processing unit 13 determines whether or not the emergency shut-off valve 7 needs to be closed based on conditions such as whether the seismic intensity measurement data is greater than or equal to a reference value or the valve closing necessity data is “necessary”. Further, when the determination processing unit 13 determines that the valve needs to be closed, the determination processing unit 13 outputs a valve closing output signal to the emergency shutoff valve 7 by an electric signal, for example.

  FIG. 9 shows a hardware configuration of the control device 1 according to the embodiment.

  As is clear from this figure, the control device 1 according to the embodiment is configured by a controller or the like, and a CPU (Central Processing Unit) 301, a RAM (Random Access Memory) 302, a communication interface 304, and an input / output interface 305 include: They are connected to each other via a bus 306. The input / output interface 305 is connected to the earthquake measuring device 2, the water level gauge device 3, and the emergency shut-off valve 7. The network 21 is connected to the communication interface 304.

  The signal input unit 11, the valve closing necessity storage unit 12, the determination processing unit 13, and the data communication unit 14 of FIG. 1 are implemented in the RAM 302 and executed by the CPU 301. The signal input unit 11 is realized by receiving input signals from the seismic measurement device 2 and the water level measurement device 3 from the input / output interface 305 at a period of 0.1 second, 0.5 second, 1 second, etc., for example. . The valve closing necessity storage unit 12 is accessed from the data communication unit 14 and the determination processing unit 13. The determination processing unit 13 is embodied by executing the latest seismic intensity measurement data in the signal input unit 11 at the timing when it is stored, for example, at a 0.1 second period, a 0.5 second period, or a 1 second period. The data communication unit 14 is realized by executing at the timing when the communication interface 304 receives the valve closing necessity data from the monitoring device 8 or when the latest water level measurement data is stored in the signal input unit 11.

  Next, a processing procedure in the control device 1 will be described along FIG. 10 with reference to FIGS. 8 and 9.

  First, in step S131, the determination processing unit 13 receives the earthquake intensity measurement data from the earthquake measurement device 2, compares the received earthquake intensity measurement data with a reference value, and receives the received earthquake intensity measurement data. It is determined whether it is larger than the reference value. If it is determined in step S131 that the seismic intensity measurement data is less than the reference value, the determination processing unit 13 ends the process. On the other hand, if it is determined in step S131 that the seismic intensity measurement data is greater than or equal to the reference value, the determination processing unit 13 proceeds to step S132 and determines whether or not the valve needs to be closed. That is, in step S132, the determination processing unit 13 reads the valve closing necessity data from the valve closing necessity storage unit 12 shown in FIGS. 8 and 9, and the valve closing necessity data is read from the read valve closing necessity data. It is determined whether it is “necessary” or “not”. When it is determined in step S132 that the valve closing necessity data is “NO”, the determination processing unit 13 ends the process. That is, the control device 1 does not close the emergency shut-off valve 7. On the other hand, when it is determined in step S132 that the valve closing necessity data is “necessary”, the determination processing unit 13 proceeds to step S133. In step S133, the determination processing unit 13 outputs a valve closing command to the emergency shut-off valve 7, and ends the process.

  The emergency cutoff valve control device and the emergency cutoff valve control method according to the embodiment have the following effects.

(1) The emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment continuously determine whether or not the emergency shut-off valve 7 needs to be closed based on continuous measurement data of the water level that is changing every moment. Therefore, the emergency shutoff valve 7 of the water storage tank 4 necessary for securing emergency water supply can be quickly closed in the event of an earthquake disaster, and the operation of ensuring emergency water supply or continuing water flow appropriately Can do.

(2) The emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment are based on the initial setting data 830 including the information 834 of the individual areas A to F stored in the data storage unit 83. Since the necessity of valve closing is calculated, appropriate emergency water supply can be secured according to the seismic resistance of water pipes, the number of medical and public facilities, the number of private houses and the number of establishments in each individual district A to F .

(3) The emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment are required to close the emergency shut-off valve 7 based on the initial setting data 830 including the water tank facility information 832 stored in the data storage unit 83. Since no is calculated, initial setting is performed even when maintenance cleaning is performed in any of the water tank facilities 100A to 100F, or when any of the water tank facilities 100A to 100F is in an operation stopped state for some reason. This can be done simply by changing the water tank facility information 832 in the data.

(4) The emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment store the time series data 850 in the data storage unit 83 provided in the monitoring device 8 and the valve closing provided in the monitoring device 8. Since the necessity calculation unit 82 calculates the necessity data for closing the emergency shut-off valve 7, these data can be provided to the operation manager at any time. Therefore, it is possible to assume the operation at the time of earthquake disaster in daily operations, and it is possible to develop a quick initial action when the earthquake occurs.

(5) Since the emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment calculate the necessity of repeated valve closure and store the time series data 850 for each of the water tank facilities 100A to 100F, the water tank When planning the anti-vibration work of the facilities 100A to 100F, by planning to prioritize the water tanks with a high frequency of “necessary” for the valve closing necessity data stored in the storage unit 83. Therefore, it can be expected that the earthquake disaster countermeasure effect will match the investment.

(6) In the emergency shut-off valve control device and the emergency shut-off valve control method according to the embodiment, the valve closing necessity data obtained by the valve closing necessity calculating unit 82 of the monitoring device 8 is continuously obtained from the control device 1. Since it stores in the valve closing necessity storage part 12, when the measurement data of the earthquake measuring device 2 are larger than a regulation value, based on the valve closing necessity data preserve | saved in the valve closing necessity storage part 12, an emergency shut-off valve 7 can be closed immediately. Therefore, it is possible to eliminate risks such as damage to the earthquake measuring device 2 after the occurrence of an earthquake and stop of the earthquake measuring device 2, the water level measuring device 3, the network 21 and the monitoring device 8 due to power loss, and the reliability of the system can be improved. .

  The emergency shut-off valve control device according to the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the gist of the present invention. Other embodiments of the emergency shut-off valve control device according to the present invention will be listed below.

  In the above embodiment, the maximum acceleration is used as the seismic intensity measurement data in the seismic measuring apparatus 2, but seismic intensity, seismic intensity class, acceleration, and the like can also be used.

  In the embodiment, the control device 1 includes the timer 1a. However, instead of such a configuration, the control device 1 includes a time generation function, and the timing at which the signal input unit 11 acquires seismic intensity measurement data and water level measurement data. The time may be generated and transmitted from the data communication unit 14 to the monitoring device 8. Furthermore, time may be generated at the timing when the valve closing necessity storage unit 12 acquires the valve closing necessity data from the monitoring device 8 and may be stored in the valve closing necessity storage unit 12.

  In the above embodiment, the past data is accumulated in time series in the signal input unit 11 and the valve closing necessity storage unit 12, but instead of such a configuration, the past data can be discarded, or for a predetermined period. It is also possible to save only previous data and discard previous data.

  In the said embodiment, although the control apparatus 1, the earthquake measuring device 2, the water level measuring device 3, and the water tank 4 were each provided in each facility 100A-100F, multiple these apparatuses are installed about each facility 100A-100F. You can also.

  The emergency shut-off valve control device according to the embodiment can also be applied to water supply devices such as buildings and apartment houses, and industrial water cooling water devices used in offices.

  In addition to storing information such as programs, tables, and files for realizing each function in a RAM, a recording device such as an SSD (Solid State Drive), an IC (Integrated Circuit) card, an SD (Secure Digital) card, a DVD It can be stored in a recording medium such as (Digital Versatile Disc).

  The configuration, function, processing unit, and storage unit of each unit according to the embodiment may be realized in whole or in part by hardware designed with an integrated circuit.

  In the drawings for explaining the embodiments, only control lines and information lines considered necessary for explanation are shown, and not all control lines and information lines on the product are necessarily shown. In practice, it can be considered that almost all configurations are connected to each other.

1 Control device (shutoff valve control device)
1a Timer 2 Seismic measuring device 3 Water level measuring device (water level measuring unit)
4 water storage tank (water storage part)
5 Inflow pipe 6 Outflow pipe 7 Emergency shutoff valve (shutoff valve)
DESCRIPTION OF SYMBOLS 8 Monitoring apparatus 11 Signal input part 12 Valve closing necessity storage part 13 Judgment processing part 14 Data communication part 20 Water distribution area 21 Network 80 Data communication part 81 Water storage amount calculating part 82 Valve closing necessity calculating part 83 Data storage part 84 Order | rank calculation Department 100A-100F Facility (water storage facility)

Claims (12)

A plurality of water storage facilities, a monitoring device that continuously monitors the storage state of the plurality of water storage facilities, and a network that interconnects the water storage facility and the monitoring device,
The water storage facility has a water storage tank, an emergency shut-off valve installed in a water pipe communicating with the water tank, a control device that controls opening and closing of the emergency shut-off valve, and an earthquake measurement device,
The monitoring device needs to close the emergency shutoff valve based on data transmitted from the control device via the network and initial setting data including a target emergency water supply amount stored in advance in a data storage unit. While repeatedly calculating the failure data, the valve closing necessity data obtained by the calculation is sequentially transmitted to the control device via the network,
When the seismic measurement data output from the seismic measurement device exceeds a reference value, the control device, based on the latest valve closing necessity data stored in the valve closing necessity storage unit at that time, An emergency shut-off valve control device that switches an emergency shut-off valve from a valve open state to a valve closed state or maintains the valve in an open state. In the emergency shut-off valve control device according to claim 1,
The water storage facility comprises a water level measuring device for measuring the water level in the water tank,
The monitoring device, from the water level measurement data transmitted from the control device via the network and the bottom area data of the water tank stored in advance in the data storage unit, the amount of water stored in each water storage facility, And an emergency shutoff valve control device for calculating a total amount of water stored in the plurality of water storage facilities. In the emergency shut-off valve control device according to claim 1,
In the data storage unit, set a target condition for determining the target water amount of emergency water supply that must be secured in the entire area of the water distribution area in the event of an earthquake and the priority order of the emergency shut-off valve that is to be closed preferentially. From the target water amount of emergency water set in the data storage unit, the amount of water stored in each water tank, and the priority conforming condition of the emergency shut-off valve to be closed preferentially, An emergency shut-off valve control device characterized by calculating. In the emergency shut-off valve control device according to claim 3,
The emergency shut-off valve control device, wherein the rank condition is a combination of data stored in the data storage unit 83 and ascending order, descending order, AND, OR, or four arithmetic operations. In the emergency shut-off valve control device according to claim 4,
The emergency shut-off valve control device characterized in that the ranking condition is a water storage amount AND ascending order. In the emergency shut-off valve control device according to claim 4,
The emergency shut-off valve control device characterized in that the ranking condition is a water storage amount AND descending order. In the emergency shut-off valve control device according to claim 4,
The emergency shut-off valve control device characterized in that the ranking condition is a water tank seismic resistance AND ascending order. In the emergency shut-off valve control device according to claim 3,
In the data storage unit, information on the water tanks provided in each of the plurality of water storage facilities, information on the degree of earthquake resistance for each water tank, and information on individual districts that receive water from each of the plurality of water storage facilities An emergency shut-off valve control device that is further set. In the emergency shut-off valve control device according to claim 8,
The information regarding the water tank provided in each of the plurality of water storage facilities includes a bottom area of each water tank. In the emergency shut-off valve control device according to claim 8,
The emergency shut-off valve control device characterized in that the information on the degree of seismic resistance of each water tank includes the importance of each water tank. In the emergency shut-off valve control device according to claim 8,
The emergency shut-off valve control device according to claim 1, wherein the information related to the individual district includes an earthquake resistance degree of a water pipe piped in the individual district. The water storage state of a plurality of water storage facilities including a water storage tank, an emergency shutoff valve installed in a water pipe communicating with the water storage tank, a control device that controls opening and closing of the emergency shutoff valve, and an earthquake measurement device, via the network Monitor continuously with the monitoring device connected to the control device,
The monitoring device needs to close the emergency shutoff valve based on data transmitted from the control device via the network and initial setting data including a target emergency water supply amount stored in advance in a data storage unit. And repeatedly calculating the failure data, the valve closing necessity data obtained by the calculation is sequentially transmitted to the control device via the network,
When the seismic measurement data output from the seismic measurement device exceeds a reference value, the control device, based on the latest valve closing necessity data stored in the valve closing necessity storage unit at that time, An emergency shut-off valve control method, wherein the emergency shut-off valve is switched from an open state to a closed state or maintained in an open state.