JP-7857007-B2 - Pump operating condition estimation device, pump installation location estimation device, estimation method, estimation program, pump unit, and field groundwater level control system

JP7857007B2JP 7857007 B2JP7857007 B2JP 7857007B2JP-7857007-B2

Inventors

清水裕太
菊地麗

Assignees

国立研究開発法人農業・食品産業技術総合研究機構

Dates

Publication Date: 20260512
Application Date: 20220329

Claims (10)

A pump operating condition estimation device installed in a well within a field to estimate the operating conditions of a pump used to drain groundwater, Pump operating condition estimation device, comprising an operating condition estimation unit that uses an operating condition estimation model generated by machine learning using training data that associates the saturated hydraulic conductivity near the well, which is represented by information representing the delay time of groundwater level change between the inside of the well and the surrounding area, or the amount of water level change within a predetermined time of the water introduced into the well, with water level information including the water level of the well before, during, and after the operation of the pump, and the operating conditions of the pump, to estimate the operating conditions of the pump in order to equalize the groundwater level in the field, taking as input the saturated hydraulic conductivity near the well in the target field , the current water level of the wells in the field and water level information representing the target water level of the well.
The pump operating condition estimation device according to claim 1, wherein the water level information further includes information regarding environmental factors of the field that affect the water level of the well.
The pump operating condition estimation device according to claim 1 or 2, wherein the water level information further includes information representing the distance between adjacent pumps in a plurality of pumps installed in a field.
A well within the field is provided, and at least one pump is installed in the well to drain the groundwater of the field. A control device that controls the operation of the pump based on the operating conditions estimated by the pump operating condition estimation device according to any one of claims 1 to 3, A pump unit equipped with a pump unit.
A pump installation location estimation device for estimating the installation location of the pump of the pump unit described in claim 4, A pump installation location estimation device comprising an installation location estimation unit that estimates the pump installation location information by using a pump installation location estimation model generated by machine learning using training data that associates subsurface environmental geographic information related to the flow path of groundwater in the field, information representing the distribution of water level in the field after the installation of the pump, information representing the distribution of saturated hydraulic conductivity in the field, and information on the installation location of the pump in the field, taking the subsurface environmental geographic information of the target field and information representing the distribution of water level in the target field as input.
A pump operating condition estimation device according to any one of claims 1 to 3, The pump unit according to claim 4, A field groundwater level control system comprising a pump installation location estimation device as described in claim 5.
A method for estimating the operating conditions of a pump installed in a well within a field to drain groundwater, A pump operating condition estimation method, comprising an operating condition estimation step, which involves using an operating condition estimation model generated by machine learning using training data that associates the saturated hydraulic conductivity near the well, which is represented by information indicating the delay time of groundwater level change between the inside of the well and the surrounding area, or the amount of water level change within a predetermined time of water introduced into the well, with water level information including the water level of the well before, during, and after the operation of the pump, and the operating conditions of the pump, to estimate the operating conditions of the pump in order to equalize the groundwater level in the field , taking the saturated hydraulic conductivity near the well in the target field, the current water level of the wells in the field and water level information indicating the target water level of the well as input.
A pump installation location estimation method for estimating the installation location of a pump whose operation is controlled based on the operating conditions estimated by the pump operating condition estimation method described in claim 7, A pump installation location estimation method comprising an installation location estimation step, in which a pump installation location estimation model is generated by machine learning using training data that associates subsurface environmental geographic information related to the flow path of groundwater in a field, information representing the distribution of water levels in the field after the installation of the pump, information representing the distribution of saturated hydraulic conductivity in the field, and information on the installation location of the pump in the field, and the model uses the subsurface environmental geographic information of a target field and information representing the distribution of water levels in the target field as input to estimate the installation location of the pump.
A pump operating condition estimation program for causing a computer to function as a pump operating condition estimation device according to any one of claims 1 to 3, wherein the pump operating condition estimation program causes the computer to function as the operating condition estimation unit.
A pump installation location estimation program for causing a computer to function as a pump installation location estimation device according to claim 5, wherein the pump installation location estimation program causes a computer to function as the installation location estimation unit.

Description

This invention relates to a pump operating condition estimation device, a pump installation location estimation device, an estimation method, an estimation program, a pump unit, and a field groundwater level control system. Poor drainage in fields can have various causes, and appropriate responses are necessary depending on the cause. In fields with poor drainage, particularly those with groundwater channels, significant imbalances in groundwater levels can occur. In such fields, problems can arise where, for example, areas where crops suffer drought damage due to sun exposure coexist with areas where water is so deep that one's feet sink into it. To address the uneven groundwater levels that contribute to such poor drainage, methods such as the construction of underground drainage systems or agricultural drainage have been employed. Furthermore, methods for controlling groundwater levels in cultivated fields using pumps have been reported (Non-Patent Documents 1 and 2). Furthermore, methods for controlling groundwater levels have been reported in areas other than fields. For example, a method for monitoring and controlling multiple drainage pumps installed in rainwater drainage channels has been reported (Patent Document 1). Japanese Patent Publication No. 2020-122384 Masatoshi Iwasa, "Groundwater Level Control for Vegetable Introduction," Kyushu Agricultural Research, 1984, No. 46, pp. 10-12.Hisao Negishi et al., "Crop Rotation Techniques for Paddy Field Use Reorganization (2)," Agricultural Technology, 1981, Vol. 36, No. 12, pp. 529-537. This figure illustrates an example of the main components of a field groundwater level control system according to one aspect of the present invention.This is a block diagram showing an example of the main components of a pump unit according to one aspect of the present invention.This flowchart shows an example of the estimation process flow in an operating condition estimation device according to one aspect of the present invention.This is a flowchart showing an example of the estimation process flow in an installation location estimation device according to one aspect of the present invention. [1. Groundwater level control system for fields] A field groundwater level control system according to one aspect of the present invention is a system that controls the groundwater level of a field by using a pump installed in a well in the field to drain the groundwater from the field. One aspect of the groundwater level control system will be described with reference to Figure 1. Figure 1 is a block diagram showing an example of the main components of a field groundwater level control system according to one aspect of the present invention. As shown in Figure 1, the groundwater level control system 1000 includes an operating condition estimation device (pump operating condition estimation device) 100, an installation location estimation device (pump installation location estimation device) 200, and a pump unit 500. Furthermore, the groundwater level control system 1000 includes an operating condition estimation model generation device 300, an installation location estimation model generation device 400, a storage device 60, an output device 70, and an input device 80. The storage device 60 stores programs and data used in the groundwater level control system 1000. For example, the storage device 60 stores various data input via the input device 80. Furthermore, for example, the storage device 60 stores training data and generated learning models used to generate learning models in the operating condition estimation model generation device 300 and the installation location estimation model generation device 400. Additionally, for example, the storage device 60 stores learning models, input information, and output information used for prediction in the operating condition estimation device 100 and the installation location estimation device 200. The storage device 60 may have a database for storing various data on a cloud or server. The output device 70 outputs the results estimated by the operating condition estimation device 100 and the installation location estimation device 200. The mode of output by the output device 70 is not particularly limited. For example, the output device 70 may be a display device that displays the information representing the estimation results as an image, or it may be an audio output device that outputs the information as audio. Alternatively, the output device 70 may be the display of a mobile device, such as a smartphone, that displays the estimation results. The input device 80 receives input operations from the user for the groundwater level control system 1000. For example, the input device 80 receives input of training data used to generate learning models in the operating condition estimation model generation device 300 and the installation location estimation model generation device 400. Furthermore, the input device 80 receives input of d