JP2021067047A - Well monitoring system - Google Patents

Abstract

To provide a well monitoring system that can appropriately monitor presence or absence of abnormalities in a well.SOLUTION: The well monitoring system 1 comprises: water pumping devices 3A to 3C installed in each of wells 2A to 2C that are estimated to take water from same aquifer; a server 4 that stores well information related to the wells 2A to 2C; and a terminal 5 that can read the well information stored in the server 4 via network 6. Each of the water pumping devices 3A to 3C has a pump for pumping groundwater from the wells 2A to 2C, a water level sensor that measures water levels of the wells, and a control device that sends the well information to the server 4. The well information contains water level information on the water levels of the wells 2A to 2C, water pumping amount information on a water pumping amount from the wells 2A to 2C, positional information indicating a position where the wells 2A to 2C are installed, and device status information indicating status of the water pumping devices 3A to 3C.SELECTED DRAWING: Figure 1

Description

The present invention relates to a well monitoring system.

Conventionally, groundwater pumped from wells has been used in various facilities such as factories and hospitals. As a monitoring system for monitoring such a pumping facility for pumping groundwater, for example, there is one disclosed in Patent Document 1. In the monitoring system of the same document, the monitoring control device on the equipment side detects various state quantities of the pumping equipment. Then, when an abnormality occurs, the monitoring control device transmits an alarm to the provider side that provides the pumping equipment via the Internet. Specifically, the monitoring and control device detects the water level of the well as the state quantity of the pumping equipment, and when the detected water level falls below the preset water level, it is determined that an abnormality has occurred.

Japanese Unexamined Patent Publication No. 2006-26572

By the way, the well draws water from a stratum filled with groundwater called an aquifer. Therefore, when there are multiple wells that take water from the same aquifer, pumping water from one well may affect the water level of other wells. However, although the above-mentioned conventional monitoring system monitors a plurality of pumping facilities separated from each other, the relationship between the wells in which the pumping facilities are installed is not considered and the monitoring is performed individually. Therefore, it may not be possible to properly determine whether or not there is an abnormality in the well.

An object of the present invention is to provide a well monitoring system capable of appropriately monitoring the presence or absence of abnormalities in a well.

A well monitoring system that solves the above problems includes a pumping facility installed in each of a plurality of wells that are presumed to take water from the same water layer, and a server that stores well information for each well. Each of the pumping facilities includes a pump for pumping ground water from the well, a water level sensor for measuring the water level of the well, and a control device for transmitting the well information to the server. Water level information regarding the water level of each well and pumping amount information regarding the amount of water pumped from each well are included.

According to the above configuration, since it is presumed that the plurality of wells take water from the same aquifer, there is a correlation between the water level information and the pumped amount information of each well. Then, the water level information and the pumping amount information of the plurality of wells are transmitted from the control device of each pumping facility to the server and stored. Since the water level information and the pumped amount information that are correlated with each other are aggregated in the server in this way, it is possible to appropriately monitor the presence or absence of abnormalities in the wells while taking into account the relationships between the plurality of wells.

In the well monitoring system, it is preferable that each control device transmits the well information to the server by wireless communication.
According to the above configuration, well information can be easily transmitted from the control device to the server even when the pumping facilities are scattered over a wide area.

In the well monitoring system, it is preferable that the well information includes position information indicating a point where each well is installed.
According to the above configuration, the distance between the wells can be grasped, and the presence or absence of abnormality in the wells can be monitored while more appropriately considering the relationship between the plurality of wells.

In the well monitoring system, it is preferable to include a terminal capable of reading the well information stored in the server via a network.
According to the above configuration, the worker can easily confirm the well information using a terminal such as a smartphone.

According to the present invention, the presence or absence of abnormality in the well can be appropriately monitored.

Schematic diagram of the well monitoring system. A schematic diagram showing the relationship between a plurality of wells and an aquifer on a map. Schematic configuration of wells and pumping equipment.

Hereinafter, an embodiment of the well monitoring system will be described with reference to the drawings.
As shown in FIG. 1, the well monitoring system 1 includes pumping equipment 3A to 3C installed in each of the plurality of wells 2A to 2C, a server 4, and a terminal 5. The pumping facilities 3A to 3C and the terminal 5 are connected to the server 4 via a network 6 such as the Internet. For convenience of explanation, the case where the number of wells to be monitored by the well monitoring system 1 is three is illustrated, but the number of wells can be changed as appropriate as long as it is two or more.

As shown in FIG. 2, the wells 2A to 2C are installed on the aquifer 11 indicated by the broken line in the figure. The distribution range of the aquifer 11 is estimated by, for example, a typical method such as a surface geological survey, a geological survey such as a boring survey, an electric survey, or a water quality survey including ion analysis, or a combination thereof. It is presumed that the wells 2A to 2C installed on the same aquifer 11 take water from the same aquifer 11.

As shown in FIG. 3, the pumping equipment 3A includes a pump 21 for pumping groundwater from the well 2A, a tank 22 for storing the groundwater pumped by the pump 21, and a control device 23 for controlling the operation of the pump 21. There is. Since the pumping equipments 3B and 3C have the same configuration as the pumping equipments 3A, their description will be omitted.

An electric pump driven by a motor 24 is adopted as the pump 21. The pump 21 may be of a type installed on land or a type of being put into water. Further, as the pump 21, a pump by another drive system such as a pump driven by an engine may be adopted. The pump 21 pumps groundwater from the well 2A via the pumping pipe 25, and sends the groundwater pumped through the connecting pipe 26 to the tank 22. The groundwater stored in the tank 22 is sent to a facility such as a factory (not shown) via a delivery pipe 27.

A PLC (Programmable Logic Controller) is adopted as the control device 23, and the control device 23 includes a CPU 31 and a memory 32. The control device 23 executes various controls by the CPU 31 executing the program stored in the memory 32.

Specifically, the control device 23 controls the operation of the pump 21 through the supply of driving power to the motor 24. Further, the control device 23 acquires well information regarding the well 2A from various sensors provided in the pumping equipment 3A and transmits the well information to the server 4.

Various sensors include a water level sensor 41, a flow rate sensor 42, a current sensor 43, and a water storage amount sensor 44. The water level sensor 41 detects the water level Hw of the well 2A. The flow rate sensor 42 detects the flow rate Qw of the groundwater pumped by the pump 21. The control device 23 detects the amount of groundwater pumped Pw per unit time based on the detected flow rate Qw. The current sensor 43 detects the current Im supplied to the motor 24. The water storage amount sensor 44 detects the water storage amount Nw in the tank 22 based on the water level of the groundwater stored in the tank 22.

The control device 23 determines the abnormality of the water level sensor 41. Specifically, the control device 23 causes an abnormality in the water level sensor 41 when the signal indicating the water level Hw is no longer output from the water level sensor 41, or when the water level Hw indicated by the signal becomes an unacceptable value. Is determined to have occurred. Further, the control device 23 also determines the abnormality of the flow rate sensor 42, the current sensor 43, and the water storage amount sensor 44 in the same manner as the water level sensor 41. When an abnormality occurs in the current sensor 43, the control device 23 determines that an abnormality has occurred in the pump 21.

The control device 23 sends and receives signals to and from the server 4 by wireless communication. The control device 23 of the present embodiment uses radio waves in a frequency band of, for example, about several GHz. The control device 23 transmits well information regarding the well 2A to the server 4 to the server 4 at predetermined intervals of, for example, several tens of seconds to several minutes. On the other hand, the control device 23 receives an instruction signal for instructing, for example, driving / stopping the pump 21 from the server 4.

The well information includes water level information consisting of the water level Hw of the well 2A, pumping amount information consisting of the pumping amount Pw from the well 2A, and water storage amount information consisting of the water storage amount Nw. In addition, the well information includes equipment status information indicating whether or not the various sensors and the pump 21 are abnormal. Further, the well information includes position information indicating a point where the well 2A is provided. The position information includes the latitude and longitude of the point where the well 2A is installed, and is stored in advance in the memory 32 of the control device 23. The location information is also stored in the server 4.

As shown in FIG. 1, the server 4 is configured to be able to exchange information between the plurality of pumping facilities 3A to 3C and the terminal 5 by connecting to the plurality of pumping facilities 3A to 3C via the network 6. As the server 4, a stationary server, a cloud server virtually constructed on the network 6, or the like is adopted. The server 4 includes a CPU 51 and a memory 52. The server 4 executes various controls by the CPU 51 executing the program stored in the memory 52.

Specifically, the server 4 stores the well information transmitted from each of the control devices 23 of the pumping facilities 3A to 3C in the memory 52. The server 4 transmits well information to the terminal 5 in response to a request from the terminal 5, which will be described later. Further, the server 4 transmits an instruction signal from the terminal 5 to each of the control devices 23 of the pumping facilities 3A to 3C to the control device 23.

The terminal 5 is configured to be able to exchange information with and from the server 4 by connecting to the server 4 via the network 6. An information terminal such as a smartphone or a notebook computer is adopted as the terminal 5.

The terminal 5 reads the well information from the server 4 by the operation of the operator and displays it on the screen. Such well information, that is, water level information, pumping amount information, water storage amount information, position information, and equipment status information is displayed in various formats such as a table format and a graph format. Then, the worker transmits an instruction signal or the like from the terminal 5 to the pumping facilities 3A to 3C via the server 4 based on the displayed well information.

Next, the operation and effect of this embodiment will be described.
(1) The well monitoring system 1 includes pumping equipment 3A to 3C installed in each of a plurality of wells 2A to 2C presumed to take water from the same aquifer 11, and a server 4 for storing well information. .. The well information includes water level information indicating the water level Hw of the wells 2A to 2C and pumping amount information indicating the pumping amount Pw from the wells 2A to 2C. Since it is presumed that the plurality of wells 2A to 2C are taking water from the same aquifer 11, there is a correlation between the water level information and the pumped water amount information of the wells 2A to 2C. Then, the water level information and the pumping amount information of the wells 2A to 2C are transmitted from the control device 23 of the pumping equipment 3A to 3C to the server 4 and stored. Since the water level information and the pumped amount information that are correlated with each other are collected in the server 4 in this way, it is possible to appropriately monitor the presence or absence of abnormalities in the wells 2A to 2C while taking into account the relationship between the wells 2A and 2C.

That is, for example, even if the water level Hw of the well 2A drops even though the pumping equipment 3A has not been pumped, if the pumping amount Pw of the pumping equipment 3B is large, the pumping equipment 3A has an abnormality. It becomes possible to judge that it has not occurred. Further, in such a case, for example, by requesting the pumping equipment 3B to reduce the amount of water pumped from the well 2B, it is possible to equalize the amount of pumped water between the pumping equipments 3A to 3C. .. Further, it is also possible to grasp, for example, the amount of groundwater in the entire aquifer 11 based on the water level Hw of the wells 2A to 2C.

(2) Since the control device 23 transmits the well information to the server 4 by wireless communication, the well information is transmitted from the control device 23 to the server 4 even when the pumping facilities 3A to 3C are scattered over a wide area. Easy to send.

(3) Since the well information includes position information indicating the points where the wells 2A to 2C are provided, it is possible to grasp the distance between the wells 2A to 2C and the like, and the relationship between the wells 2A to 2C. It is possible to monitor the presence or absence of abnormalities in wells 2A to 2C while taking into account the conditions more appropriately.

(4) The well monitoring system 1 includes a terminal 5 capable of reading well information stored in the server 4 via a network 6. Therefore, the worker can easily confirm the well information by using the terminal 5.

(5) Since the well information includes the equipment status information, it is possible to detect the presence or absence of an abnormality in the pumping facilities 3A to 3C based on the equipment status information. Thereby, the presence or absence of abnormality in the wells 2A to 2C itself can be accurately determined.

This embodiment can be modified and implemented as follows. The present embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
-In the above embodiment, the configurations of the pumping facilities 3A to 3C can be changed as appropriate. For example, the pumping facilities 3A to 3C may be configured not to include the tank 22. Further, the pumping equipments 3A to 3C may be configured not to include the flow rate sensor 42. In this case, the control device 23 may estimate the pumping amount Pw based on, for example, the driving time of the pump 21.

-In the above embodiment, the control device 23 does not have to include the equipment status information in the well information and transmit it to the server 4. Further, the control device 23 does not have to include the position information in the well information and transmit it to the server 4.

-In the above embodiment, the well monitoring system 1 may be configured not to include the terminal 5. In this case, the operator may check the well information on the display of the server 4, for example. Further, for example, the well information acquired by the server 4 is compared with a preset threshold value, and based on the comparison result, the server 4 monitors the presence or absence of an abnormality in the wells 2A to 2C and indicates a signal to the pumping facilities 3A to 3C. May be transmitted.

-In the above embodiment, the control device 23 transmits well information to the server 4 by wireless communication, but the present invention is not limited to this. For example, the control device 23 and the server 4 are connected by a physical signal line, and the signal line is connected. Well information may be transmitted to the server 4 via the server 4.

-In the above embodiment, not all of the plurality of wells monitored by the well monitoring system 1 take water from the same aquifer, and wells may include wells that take water from different aquifers. .. In this case, it is preferable that the server 4 stores well information by grouping each aquifer, for example.

-In the above embodiment, the control device 23 does not have to include the CPU 31 and the memory 32 and execute software processing. For example, a dedicated hardware circuit (for example, ASIC) that processes at least a part of the software processing executed in the above embodiment may be provided. That is, the control device 23 may have any of the following configurations (a) to (c). (A) A processing device that executes all of the above processing according to a program and a program storage device such as a ROM that stores the program are provided. (B) A processing device and a program storage device that execute a part of the above processing according to a program, and a dedicated hardware circuit that executes the remaining processing are provided. (C) A dedicated hardware circuit for executing all of the above processes is provided. Here, there may be a plurality of software processing circuits including a processing device and a program storage device, and a plurality of dedicated hardware circuits. That is, the processing may be executed by a processing circuitry including at least one of one or more software processing circuits and one or more dedicated hardware circuits. The same applies to the server 4.

Next, the technical ideas that can be grasped from the above-described embodiments and modifications will be added below together with their effects.
(B) A well monitoring system in which the well information includes equipment status information indicating the status of each pumping facility. According to the above configuration, the presence or absence of an abnormality in the pumping equipment can be detected based on the equipment status information, and the presence or absence of an abnormality in the well itself can be accurately determined.

1 ... well monitoring system, 2A-2C ... well, 3A-3C ... pumping equipment, 4 ... server, 5 ... terminal, 6 ... network, 11 ... aquifer, 21 ... pump, 23 ... control device, 41 ... water level sensor , 42 ... Flow sensor, Hw ... Water level, Pw ... Pumping amount.

Claims (4)

Pumping equipment installed in each of multiple wells that are estimated to take water from the same aquifer,
A well monitoring system including a server that stores well information related to each well.
Each pumping facility includes a pump for pumping groundwater from the well, a water level sensor for measuring the water level of the well, and a control device for transmitting the well information to the server.
The well monitoring system includes water level information regarding the water level of each well and pumping amount information regarding the amount of water pumped from each well. In the well monitoring system according to claim 1,
Each of the control devices is a well monitoring system that transmits the well information to the server by wireless communication. In the well monitoring system according to claim 1 or 2.
The well monitoring system includes position information indicating a point where each well is installed. In the well monitoring system according to any one of claims 1 to 3,
A well monitoring system including a terminal capable of reading the well information stored in the server via a network.

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