Dam measurement system, centralized management device, and program

Abstract

To measure an uplift pressure of a dam without imposing a load on a worker.SOLUTION: A dam measurement system 1 includes a dam management device 100 that manages a dam, and a centralized management device 200 connected to the dam management device 100 over a network N1. The centralized management device 200 instructs the dam management device 100 to measure an uplift pressure of the dam. When receiving an instruction from the centralized management device 200, the dam management device 100 implements control to close a valve 16. After standing by for a predetermined time, the dam management device 100 measures the uplift pressure using a pressure sensor 17, and transmits measurement data to the centralized management device 200. The centralized management device 200 outputs a result of measurement of the uplift pressure on the basis of the measurement data obtained from the dam management device 100.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a dam measurement system, a centralized management device, and a program.

Background Art

[0002] In order to monitor the safety of a dam, the uplift pressure of the dam is measured. To measure the uplift pressure of the dam, it is necessary to close the valve provided in the drainage hole of the dam and then read the measured value of the pressure sensor. Therefore, when measuring the uplift pressure, the operator has to go inside the dam (inside the inspection gallery) where the valve is installed to perform the operation, which places a burden on the operator.

[0003] Patent Document 1 describes an invention in which an operation panel and a data logger are installed in a dam management office or the like outside the inspection gallery, and the opening and closing of an electric motor valve at the drainage hole opening inside the inspection gallery is controlled by operating a switch on the operation panel to measure the uplift pressure of the dam, and the measurement result is recorded by the data logger.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the invention described in Patent Document 1, it is necessary for the operator to go to a management office or the like near the dam to operate the switch and check the measured value recorded by the data logger. Since dams are often located in places with poor transportation accessibility, even in the invention described in Patent Document 1, a large burden is placed on the operator when measuring the uplift pressure of the dam.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a dam measurement system, a centralized management device, and a program capable of measuring the uplift pressure of a dam without imposing a burden on workers.

Means for Solving the Problems

[0007] The dam measurement system according to the present invention is a dam measurement system including a dam management device for managing a dam and a centralized management device connected to the dam management device via a network, wherein the centralized management device includes an instruction unit for instructing the dam management device to measure the uplift pressure of the dam, and the dam management device includes a valve control unit for controlling opening and closing of a valve of a drain hole of the dam provided at a measurement point of the uplift pressure, a measurement unit for measuring the uplift pressure of the dam with a pressure sensor after waiting for a predetermined time after controlling the valve to close by the valve control unit when receiving the instruction from the centralized management device, a measurement data storage unit for storing measurement data of the uplift pressure measured by the measurement unit, and a measurement data transmission unit for transmitting the measurement data to the centralized management device, wherein the centralized management device includes a measurement result output unit for outputting a measurement result of the uplift pressure based on the measurement data acquired from the dam management device.

Advantages of the Invention

[0008] According to the present invention, the uplift pressure of a dam can be measured without imposing a burden on workers.

Brief Description of the Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] Hereinafter, the dam measurement system 1, the centralized management device 200, and the program according to the embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, the same or equivalent parts are denoted by the same reference numerals.

[0011] The dam measurement system 1 according to the embodiment is a system that enables a worker to perform measurement operations such as the uplift pressure required for dam maintenance inspections without having to go to the site. As shown in FIG. 1, the dam measurement system 1 includes a dam management device 100 provided in the dam management building 12 for each dam (Dam A, Dam B, …), and a centralized management device 200 provided in a maintenance office that comprehensively maintains and manages each dam. The dam management device 100 and the centralized management device 200 are connected to be communicable with each other via a network N1 such as the Internet or an intranet.

[0012] Here, the dam to be managed by the dam management device 100 will be described. As shown in FIG. 2, a management building 12 in which the dam management device 100 is installed is provided at the uppermost part of the dam embankment 11. In addition, at each point P1 to P8 in the inspection gallery 13 of the dam embankment 11, drain holes 14a to 14h are provided at intervals in the extending direction of the inspection gallery 13. Each of the drain holes 14a to 14h has one end opening to the ground (rock mass) 15 under the dam embankment 11 and the other end opening in the inspection gallery 13. Further, at the opening portions on the inspection gallery 13 side of each of the drain holes 14a to 14h, electric valves 16a to 16h for opening and closing the drain holes 14a to 14h are attached, and pressure sensors 17a to 17h for measuring the pressure at each point P1 to P8 are connected. These pressure sensors 17a to 17h are semiconductor pressure sensors (semiconductor diaphragm pressure sensors), but other pressure sensors such as strain gauge type pressure sensors or thin film type pressure sensors may also be used. By measuring the pressure with the pressure sensors 17a to 17h after a predetermined time has elapsed since closing the valves 16a to 16h, the uplift pressure at each point P1 to P8 of the dam can be measured. When using the calibration function of the pressure sensor described in Japanese Patent Application Laid-Open No. 2023-045226, it is necessary to provide valves on both the inlet side and the outlet side of the drain hole sandwiching the pressure sensor, and to separately provide a reference sensor for calibrating the pressure sensor.

[0013] In the following description, when not distinguishing between the drain holes 14a to 14h, they are also referred to as drain holes 14. Similarly, when not distinguishing between the valves 16a to 16h, the pressure sensors 17a to 17h, and the points P1 to P8, they are also referred to as valves 16, pressure sensors 17, and point P. Also, in the example shown in FIG. 2, since a dam with 8 drain holes 14 is shown, the number of pressure sensors 17 is set to 8. However, the number of pressure sensors 17 may be appropriately set according to the number of detection locations for detecting the pumping pressure.

[0014] Returning to FIG. 1, the dam management device 100 is a computer for dam management provided in the management building 12 of the dam. The dam management device 100 may be configured by a general-purpose PC, a computer such as a server, or may be configured by dedicated hardware such as a so-called dam computer.

[0015] The dam management device 100 is connected to a water level gauge 20, a thermometer 30, a turbidity meter 40, etc. provided at appropriate locations inside the dam. Thereby, the dam management device 100 can acquire the water level, water temperature, turbidity, etc. of the dam in real time. Also, the dam management device 100 is connected to the aforementioned valves 16 and pressure sensors 17 via a communication line such as an optical fiber through a PLC (Programmable Logic Controller) 50. The dam management device 100 can control the opening and closing of the valves 16 via the PLC 50 and acquire the pumping pressure of the dam measured by the pressure sensors 17.

[0016] Also, the dam management device 100 has a communication function and is communicably connected to the centralized management device 200 of the maintenance office via the network N1. The dam management device 100 receives an instruction for measuring the pumping pressure of the dam from the centralized management device 200 and executes the measurement process of the pumping pressure according to the instruction. Also, the dam management device 100 is supplied with power from a DC power source via an UPS (Uninterruptible Power System) 60.

[0017] The centralized management device 200 installed in the maintenance office is a computer for centrally managing each dam (Dam A, Dam B, ···). The centralized management device may be composed of a general-purpose PC, a computer such as a server, or may be composed of dedicated hardware.

[0018] The centralized management device 200 has a communication function and is connected to be mutually communicable with the dam management device 100 of each dam via the network N1. For example, via the network N1, the centralized management device 200 can instruct the dam management device 100 to measure the uplift pressure of the dam or to transmit measurement data for a predetermined period.

[0019] In addition, the centralized management device 200 is connected to a time correction device 70 with a radio clock built in and can obtain accurate time information from the time correction device 70. Also, the power of the dam management device 100 is supplied from an AC power source via a UPS 80.

[0020] Next, the hardware configuration of the dam management device 100 will be described. As shown in FIG. 3, the dam management device 100 includes a communication unit 110, an IF unit 120, a storage unit 130, a control unit 140, and a power management unit 150. Each part of the dam management device 100 is mutually connected via an internal bus 160.

[0021] The communication unit 110 is a communication device such as a router for the dam management device 100 to connect to the network N1. The communication unit 110 communicates with the centralized management device 200 of the maintenance office via the network N1, for example. Note that the dam management device 100 may be connected to the network N1 by connecting to an external communication device without providing the communication unit 110.

[0022] The IF unit 120 is an interface for the dam management device 100 to connect to external devices, for example, a USB port. The dam management device 100 is connected to a water level gauge 20, a thermometer 30, a turbidimeter 40, a PLC 50, etc. via the IF unit 120.

[0023] The storage unit 130 includes, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, and a hard disk. The storage unit 130 stores programs executed by the control unit 140 and various types of data. Also, the storage unit 130 temporarily stores various types of information and functions as a work memory for the control unit 140 to execute processing. Further, the storage unit 130 includes a measurement data storage unit 131 and a measurement schedule storage unit 132.

[0024] Various types of measurement data related to the dam are accumulated and stored in the measurement data storage unit 131. As shown in FIG. 4, the measurement data stored in the measurement data storage unit 131 is data including the type of measurement data, the location, the measured value, and the measurement date and time. The "type" in this figure indicates whether this measurement data measures the water level, water temperature, turbidity, or uplift pressure of the dam. Also, the "location" in this figure is set only when the type is "uplift pressure", and indicates at which of the locations P1 to P8 in the dam shown in FIG. 2 the uplift pressure was measured.

[0025] Returning to FIG. 3, the measurement schedule storage unit 132 stores schedule data indicating a schedule for measuring the uplift pressure. As shown in FIG. 5, the schedule data stored in the measurement schedule storage unit 132 is data including the location of the dam and the timing for measuring the uplift pressure at that location.

[0026] Returning to FIG. 3, the control unit 140 includes a processor and controls each part of the dam management device 100. The processor is, for example, a CPU (Central Processing Unit). Functionally, the control unit 140 includes a valve control unit 141, a measurement unit 142, and a measurement data transmission unit 143. These functional configurations are realized by the processor included in the control unit 140 executing a program stored in the storage unit 130.

[0027] The valve control unit 141 controls the opening and closing of the specified valve 16 by transmitting a control signal via the PLC 50.

[0028] The measurement unit 142 performs various measurements related to the dam. For example, the measurement unit 142 periodically reads the measured value of the water level of the dam from the water level gauge 20 and registers the measurement data associated with the measurement date and time in the measurement data storage unit 131. Also, the measurement unit 142 periodically reads the measured value of the water temperature of the dam from the thermometer 30 and registers the measurement data associated with the measurement date and time in the measurement data storage unit 131. Further, the measurement unit 142 periodically reads the measured value of the turbidity of the dam from the turbidimeter 40 and registers the measurement data associated with the measurement date and time in the measurement data storage unit 131.

[0029] Also, when the measurement unit 142 receives an instruction from the centralized management device 200 or at the measurement timing indicated by the schedule data stored in the measurement schedule storage unit 132, the measurement unit 142 measures the uplift pressure at the designated point P of the dam. Specifically, the measurement unit 142 controls the valve 16 at the point P where the uplift pressure is to be measured by the valve control unit 141 to close, waits for a predetermined time, and then measures the uplift pressure by reading the measured value of the corresponding pressure sensor 17. Then, the measurement unit 142 stores the measurement data including the measured uplift pressure value, the measured point P, and the measurement date and time in the measurement data storage unit 131.

[0030] The measurement data transmission unit 143 transmits the measurement data measured by the measurement unit 142 to the centralized management device 200. Also, the measurement data transmission unit 143 acquires the measurement data for a predetermined period from the measurement data storage unit 131 in response to an instruction from the centralized management device 200 and transmits it to the centralized management device 200.

[0031] The power management unit 150 supplies power from the DC power supply to each unit via the UPS 60. Since the power management unit 150 is connected to the UPS 60, even when a power outage occurs and the power supply from the DC power supply stops, the power management unit 150 can supply power to each unit for a certain period of time.

[0032] Next, the hardware configuration of the centralized management device 200 will be described. As shown in FIG. 6, the centralized management device 200 includes a communication unit 210, an IF unit 220, a display unit 230, an input unit 240, a storage unit 250, a control unit 260, and a power management unit 270. Each unit of the centralized management device 200 is interconnected via an internal bus 280.

[0033] The communication unit 210 is a communication device such as a router for connecting the centralized management device 200 to the network N1. The communication unit 210 communicates with the dam management device 100 via the network N1, for example. Note that the centralized management device 200 may be connected to the network N1 by connecting to an external communication device without providing the communication unit 210.

[0034] The IF unit 220 is an interface for connecting the centralized management device 200 to external devices and is, for example, a USB port. The centralized management device 200 is connected to the time correction device 70 via the IF unit 220. Thereby, the centralized management device 200 can acquire accurate time information from the time correction device 70.

[0035] The display unit 230 is a display device such as a liquid crystal display and displays various screens based on instructions from the control unit 260. For example, the display unit 230 displays a screen showing the measurement results of various measurements performed by the dam management device 100, a main screen, a screen obtained by aggregating measurement data, a graph showing changes in various measured values, and the like.

[0036] The input unit 240 is an input device such as a keyboard or a mouse and outputs a signal corresponding to an input operation received from the user to the control unit 260.

[0037] The storage unit 250 includes, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, and a hard disk. The storage unit 250 stores programs executed by the control unit 260, various types of data, screen data, etc. Further, the storage unit 250 temporarily stores various information such as measurement data received from the dam management device 100, and also functions as a work memory for the control unit 260 to execute processing.

[0038] The control unit 260 includes a processor and controls each part of the centralized management device 200. The processor is, for example, a CPU (Central Processing Unit). Functionally, the control unit 260 includes an instruction unit 261, a measurement result output unit 262, a totaling unit 263, a total result output unit 264, a graph creation unit 265, and a graph output unit 266. These functional configurations are realized by the processor included in the control unit 260 executing the program stored in the storage unit 250.

[0039] The instruction unit 261 instructs the dam management device 100 to measure the uplift pressure or to transmit measurement data for a predetermined period via the network N1.

[0040] The measurement result output unit 262 outputs the measurement results of various measurements to the display unit 230 based on the measurement data acquired from the dam management device 100.

[0041] The totaling unit 263 totals the measurement data for a predetermined period acquired from the dam management device 100 according to a predetermined rule. The total result output unit 264 outputs the total result totaled by the totaling unit 263 to the display unit 230.

[0042] The graph creation unit 265 creates a graph showing changes such as the uplift pressure based on the measurement data for a predetermined period acquired from the dam management device 100. The graph output unit 266 outputs the graph created by the graph creation unit 265 to the display unit 230.

[0043] The power management unit 270 supplies power to each unit from the AC power supply via the UPS 80. Since the power management unit 270 is connected to the UPS 80, even when a power outage occurs and the power supply from the AC power supply stops, the centralized management device 200 can supply power to each unit for a certain period of time.

[0044] (Pore water pressure measurement process) Subsequently, referring to the flowchart of FIG. 7, the flow of the pore water pressure measurement process executed by the dam measurement system 1 will be described. For example, when the user operates the input unit 240 to select "pore water pressure measurement" from the main screen shown in FIG. 8 displayed on the display unit 230 after the startup of the centralized management device 200, the pore water pressure measurement process is started.

[0045] When the pore water pressure measurement process is started, first, the control unit 260 of the centralized management device 200 displays a dam selection screen as shown in FIG. 9 on the display unit 230 (step S101). In this dam selection screen, the dams to be measured by the dam measurement system 1 are shown on the map. The user operates the input unit 240 to select the dam for which the pore water pressure is to be measured, such as by clicking on it from the dam selection screen. Thereby, the control unit 260 identifies the dam for which the pore water pressure is to be measured (step S102).

[0046] Subsequently, the control unit 260 displays a seepage pressure measurement screen as shown in FIG. 10 on the display unit 230 (step S103). On the seepage pressure measurement screen, for each of the points P1 to P8 of the dam, the current open / closed states of the corresponding valves 16a to 16h, the current measured values of the pressure sensors 17a to 17h, the waiting time after closing the valves 16a to 16h when measuring the seepage pressure, the current status, etc. are listed and displayed. The user operates the input unit 240 to check the check boxes on the left side of the points P1 to P8 of the dam for which the seepage pressure is to be measured, changes the waiting time as necessary, and clicks the measurement start button below. In response to this, the control unit 260 instructs the dam management device 100 of the dam specified in step S102 to measure the seepage pressure at the point P selected from the seepage pressure measurement screen via the network N1 (step S104). That is, in the example of FIG. 10, by clicking the measurement start button, the dam management device 100 of this dam is instructed to measure the seepage pressure of the dams at points P1 and P3 with a waiting time of 30 minutes. Note that after the instruction, the statuses of the measurement points P1 and P3 on the seepage pressure measurement screen are updated during the measurement.

[0047] When receiving an instruction for seepage pressure measurement from the centralized management device 200, the control unit 140 of the dam management device 100 controls the valve 16 at the point P of the dam for which the measurement is instructed to be closed (step S105). Then, after waiting for the set predetermined time (30 minutes) (step S106), the control unit 140 acquires the value of the pressure sensor 17 at the point P for which the measurement is instructed as the value of the seepage pressure at that point P (step S107).

[0048] Then, the control unit 140 stores the seepage pressure measurement data in which the acquired seepage pressure value, the measurement date and time, and the measured point P are associated in the measurement data storage unit 131 (step S108). Also, the control unit 140 transmits this measurement data to the centralized management device 200 (step S109). Then, the control unit 140 controls the valve 16 closed in step S105 to be opened (step S110). Thereby, the valve 16 can be returned to the state before the seepage pressure measurement.

[0049] On the one hand, based on the measurement data received from the dam management device 100, the control unit 260 of the centralized management device 200 displays the measurement results of the uplift pressure (measurement date and time, measurement location, measurement value, etc.) on the display unit 230 (step S111). Thus, the uplift pressure measurement process ends. The above is the flow of the uplift pressure measurement process.

[0050] (Aggregation process) Subsequently, with reference to the flowchart in FIG. 11, the flow of the aggregation process executed by the dam measurement system 1 will be described. For example, when the user operates the input unit 240 to select "Measurement data aggregation" from the main screen shown in FIG. 8 displayed on the display unit 230 after the centralized management device 200 is started, the aggregation process is initiated.

[0051] When the aggregation process is started, first, the control unit 260 of the centralized management device 200 displays the dam selection screen shown in FIG. 9 on the display unit 230 in the same manner as in the uplift pressure measurement process (step S201). The user operates the input unit 240 to select a dam from the dam selection screen. Thereby, the control unit 260 identifies the dam to be the target of the aggregation process (step S202).

[0052] Then, the control unit 260 instructs the dam management device 100 of the dam identified in step S202 to transmit the measurement data for a preset period (step S203). The measurement data for the preset period here is, for example, the measurement data for the most recent one year, etc. Also, the measurement data for the entire period measured so far may be used as the measurement data for the preset period. Further, the user may be able to freely set the preset period by operating the input unit 240.

[0053] The control unit 140 of the dam management device 100 acquires the measurement data for the preset period from the measurement data storage unit 131 based on the instruction from the centralized management device 200 (step S204). Then, the control unit 140 transmits the acquired measurement data for the preset period to the centralized management device 200 (step S205).

[0054] The control unit 260 of the centralized management device 200 aggregates the measurement data for a predetermined period received from the dam management device 100 based on a predetermined rule (step S206). For example, the control unit 260 performs a process of calculating (aggregating) the maximum value, minimum value, and average value of the water level, water temperature, turbidity, and uplift pressure from the received measurement data on a monthly basis. Note that the user may be allowed to freely set the rule for aggregating the measurement data by operating the input unit 240.

[0055] Then, the control unit 260 displays an aggregation result screen showing the aggregation result on the display unit 230 (step S207). An example of the aggregation result screen is shown in FIG. 12. The above is the flow of the aggregation process.

[0056] (Graph display process) Subsequently, with reference to the flowchart of FIG. 13, the flow of the graph display process executed by the dam measurement system 1 will be described. For example, when the user operates the input unit 240 to select "Graph display" from the main screen shown in FIG. 8 displayed on the display unit 230 after the centralized management device 200 is started, the graph display process is started.

[0057] When the graph display process is started, first, the control unit 260 of the centralized management device 200 displays a dam selection screen shown in FIG. 9 on the display unit 230 in the same manner as the uplift pressure measurement process and the aggregation process (step S301). The user operates the input unit 240 to select a dam from the dam selection screen. Thereby, the control unit 260 identifies the dam to be the target of the graph display process (step S302).

[0058] Then, the control unit 260 instructs the dam management device 100 of the dam specified in step S302 to transmit the measurement data for a preset predetermined period (for example, for the most recent one year) (step S303).

[0059] Based on an instruction from the centralized management device 200, the control unit 140 of the dam management device 100 acquires measurement data for a predetermined period from the measurement data storage unit 131 (step S304). Then, the control unit 140 transmits the acquired measurement data for the predetermined period to the centralized management device 200 (step S305).

[0060] Based on the measurement data for a predetermined period received from the dam management device 100, the control unit 260 of the centralized management device 200 creates a graph (graph data) showing changes in measurement values such as the uplift pressure indicated by the measurement data (step S306). Then, the control unit 260 displays the created graph on the display unit 230 (step S307). An example of the graph displayed in step S306 is shown in FIG. 14. This graph is created from the measurement data of the uplift pressure for the most recent one year, and shows the changes in the measured values of the uplift pressure at each point P1 - P8 of the dam in the most recent one year. Note that in this figure, the graph is displayed in the form of a line graph, but the form of the graph to be displayed is not limited to this, and the user may be able to select the form of the graph by operating the input unit 240. Also, the user may be able to set each item to be displayed in the graph by operating the input unit 240. Also, different types of measurement values such as uplift pressure and water level may be displayed in one graph. The above is the flow of the graph display process.

[0061] As described above, according to the present embodiment, by simply instructing from the centralized management device 200 via the network N1, it is possible to cause the dam management device 100 to execute the process of closing the valve 16 and measuring the uplift pressure. Therefore, according to the present embodiment, since the worker does not need to go to the dam for measuring the uplift pressure, the uplift pressure of the dam can be measured without burdening the worker.

[0062] Also, according to the present embodiment, since it is possible to acquire measurement data for a predetermined period from the dam management device 100 by simply instructing from the centralized management device 200 via the network N1, it is easily possible to aggregate the measurement data for a predetermined period or create a graph showing changes in measurement values from the measurement data for a predetermined period.

[0063] The present invention is not limited to the above-described embodiments, and the following modifications are also possible.

[0064] (Modification example) For example, in the above embodiment, the aggregation process and the graph display process were described as separate and independent processes, but both processes may be executed together. In this case, the centralized management device 200 may perform the process of aggregating the measurement data for a predetermined period acquired from the dam management device 100 and the process of creating a graph in parallel, and display the aggregation result and the graph on the display unit 230 at the same time, or switch and display them with tabs.

[0065] In the above embodiment, in the uplift pressure measurement process, the measurement result of the uplift pressure was output to the display unit 230, but the measurement result may be notified by voice or notified to the user's smartphone by e-mail.

[0066] In the above embodiment, various data were stored in the storage unit 130 of the dam management device 100, but the present invention is not limited thereto. For example, all or part of the various data may be stored in an external control device or processing unit via the network N1.

[0067] In the above embodiment, the dam management device 100 and the centralized management device 200 operated based on programs stored in the storage units 130 and 250, respectively, but the present invention is not limited thereto. For example, the functional configuration realized by the program may be realized by hardware.

[0068] In the above embodiment, the dam management device 100 and the centralized management device 200 were, for example, general-purpose computers, but the present invention is not limited thereto. For example, the centralized management device 200 may be realized by a processing unit provided on the cloud.

[0069] In the above-described embodiment, the processes executed by the dam management device 100 and the centralized management device 200 were realized by the devices having the above-described physical configuration executing the programs stored in the storage units 130 and 250. However, the present invention may be realized as a program, or may be realized as a storage medium on which the program is recorded.

[0070] Further, a program for executing the above-described processing operations may be stored and distributed in a non-temporary recording medium readable by a processing unit such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), or an MO (Magneto-Optical Disk), and an apparatus for executing the above-described processing operations may be configured by installing the program in the processing unit.

[0071] The above-described embodiment is an example, and the present invention is not limited thereto. Various embodiments are possible without departing from the spirit of the invention described in the claims. The constituent elements described in the embodiments and modification examples can be freely combined. Also, inventions equivalent to the invention described in the claims are included in the present invention. In addition, even if the constituent elements of the invention described in the claims have the same names as the constituent elements described in the above-described embodiment, they are not limited to the constituent elements themselves described in the above-described embodiment, and can be appropriately modified and applied.

Explanation of Reference Numerals

[0072] 16, 16a to 16h Valves 17, 17a to 17h Pressure Sensors 100 Dam Management Device 141 Valve Control Unit 142 Measurement Unit 143 Measurement Data Transmission Unit 131 Measurement Data Storage Unit 200 Centralized Management Device 261 Instruction Unit 262 Measurement Result Output Unit 263 Aggregation Unit 264 Aggregation result output section 265 Graph creation section 266 Graph output section N1 Network

Claims

1. A dam measurement system comprising a dam management device for managing a dam and a centralized management device connected to the dam management device via a network, wherein the centralized management device includes an instruction unit for instructing the dam management device to measure the uplift pressure of the dam, and the dam management device includes a valve control unit for controlling the opening and closing of a valve of a drain orifice of the dam provided at a measurement point of the uplift pressure, a measurement unit for measuring the uplift pressure of the dam with a pressure sensor after waiting for a predetermined time after controlling the valve control unit to close the valve when receiving the instruction from the centralized management device, a measurement data storage unit for storing measurement data of the uplift pressure measured by the measurement unit, and a measurement data transmission unit for transmitting the measurement data to the centralized management device, and the centralized management device includes a measurement result output unit for outputting a measurement result of the uplift pressure based on the measurement data acquired from the dam management device. Dam measurement system.

2. After the measurement of the uplift pressure by the measurement unit is completed, the valve control unit controls the valve to open. The dam measurement system according to Claim 1.

3. The instruction unit instructs the dam management device to transmit measurement data for a predetermined period, and when receiving the instruction, the measurement data transmission unit acquires the measurement data for the predetermined period from the measurement data storage unit and transmits it to the centralized management device, and the centralized management device includes a totaling unit for totaling the measurement data for a predetermined period acquired from the dam management device according to a predetermined rule, and a totaling result output unit for outputting the totaling result totaled by the totaling unit. The dam measurement system according to Claim 1.

4. The instruction unit instructs the dam management device to transmit measurement data for a predetermined period, and when receiving the instruction, the measurement data transmission unit acquires the measurement data for the predetermined period from the measurement data storage unit and transmits it to the centralized management device, and the centralized management device includes a graph creation unit for creating a graph showing the change in the uplift pressure of the dam based on the measurement data for a predetermined period acquired from the dam management device, and a graph output unit for outputting the created graph. The dam measurement system according to Claim 1.

5. The measurement unit measures the uplift pressure at a scheduled timing. The dam measurement system according to Claim 1.

6. A centralized management device connected to a dam management device for managing a dam via a network, an instruction unit that instructs the dam management device to measure the uplift pressure of the dam, and a measurement result output unit that acquires measurement data of the uplift pressure from the dam management device and outputs a measurement result. Centralized management device. **Claim 7** A computer connected to a dam management device for managing a dam via a network, an instruction unit that instructs the dam management device to measure the uplift pressure of the dam, a measurement result output unit that acquires measurement data of the uplift pressure from the dam management device and outputs a measurement result, Program that functions as.

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