KR20220020532A - Apparatus for managing earth of smart farms in open field by analysis of earth in real time - Google Patents

Abstract

The present specification relates to a device for managing smart farm soil for open fields through real-time soil analysis, comprising: one or more sensor node devices which are installed at a predetermined interval in open fields, and measure one or more soil data of temperature, humidity, and pH of soil; an irrigation device which supplies water to the soil; an additive supplying device which supplies additives to the soil; and a control device which controls the irrigation device or the additive supplying device based on the soil data measured by the sensor node devices to control amounts of water and the additives supplied to the soil. According to the device for managing smart farm soil, there are advantages of supplying an appropriate amount of water by grasping the humidity of the soil in real time and controlling the supplying amount of the additives accordingly.

Description

Smart farm soil management device for open land through real-time soil analysis {APPARATUS FOR MANAGING EARTH OF SMART FARMS IN OPEN FIELD BY ANALYSIS OF EARTH IN REAL TIME}

The embodiments relate to a smart farm soil management device that can check the real-time soil condition in a smart farm for the open land and take appropriate measures immediately.

Smart farm is a farm that can properly maintain and manage the growing environment of crops or livestock remotely and automatically by grafting Information Communication Technology to existing farming technologies such as plastic houses and livestock. refers to related technologies. By using a smart farm, it is possible to improve the productivity and quality of agricultural products by creating an optimal growth environment based on data on crop growth information and environmental information.

In order to manage a smart farm by grafting information and communication technology, a number of sensor nodes installed in the management area that can acquire crop growth information and environmental information in real time, and a wireless network, collect soil data or control it from users There is a need for a control method that can receive instructions and remotely control the irrigation equipment installed in the management area.

Conventionally, irrigation was performed by supplying a predetermined amount of water at predetermined time intervals. However, in this case, the moisture of the soil in which the roots of the crops are located is not taken into account, so that there are cases in which the water is supplied excessively or insufficiently. In addition, the supply of additives such as fertilizers is only supplied in a fixed amount at a fixed time, and is provided regardless of the growth state of the crop and the humidity of the soil. .

[Patent Document 1] Korean Patent Application Publication No. 10-2014-0132873

An embodiment of the present specification aims to provide a method of measuring the humidity of the soil through a sensing electrode using a potentiostat and using the same.

In addition, an embodiment aims to accurately detect the humidity of the soil in a region where crops are located in real time and irrigate at an appropriate time.

In addition, an embodiment aims to determine the amount of the additive provided based on the humidity of the soil in the region where the crop is located.

Another object of the present invention is to provide a method for more accurately estimating the humidity of the soil around a crop by using sensor data of irregularly located sensors and the position of the crop.

In addition, in one embodiment, an object of the present invention is to provide a method for appropriately reducing or increasing the amount of water and nutrients provided to a crop for the purpose of improving the growth of the crop and the quality of the fruit.

The problem to be solved in the present specification is not limited to the above, but may be extended to various matters that can be derived by the embodiments of the invention described below.

The smart farm soil management device for the field through real-time soil analysis according to an embodiment of the present specification is installed at a predetermined interval in the field, and one or more sensors for measuring soil data of one or more of soil temperature, humidity, and PH Water supplied to the soil by controlling the irrigation device or the additive supply device based on the soil data measured by the node device, the irrigation device for supplying water to the soil, the additive supply device for supplying an additive to the soil, and the sensor node device and the amount of additives can be controlled.

In one embodiment, the sensor node device, a sensing electrode; reference electrode; counter electrode; and a potentiostat unit providing a voltage to the sensing electrode, wherein the control device may determine the humidity of the soil based on the electrical data obtained from the sensing electrode.

In one embodiment, the control device determines the amount of water to be supplied to the vicinity of the sensor node device based on the time and amount for which the humidity of the soil decreases, but the time when the humidity of the soil decreases is a continuous decrease in humidity section, and when the humidity of the soil falls below a first threshold value, the control device may start supplying the first water through the first irrigation unit of the irrigation device closest to the sensor node device.

In one embodiment, the control device starts the second water supply through the first irrigation unit when the humidity of the soil falls below a second threshold value after the first water supply, but the first threshold value The value may be greater than the second threshold value.

In one embodiment, the control device, after the first water supply, when the humidity of the soil falls below a first threshold value, starts the second water supply, but the second water supply is from the crop The second may be accomplished through a second adjacent second irrigation unit.

In one embodiment, the control device determines whether to operate the second irrigation unit based on the humidity of the soil in the area obtained by the second sensor node device closest to the second irrigation unit, wherein the second sensor node When the soil in the area obtained by the apparatus does not require irrigation, the secondary water supply may be performed through the first irrigation unit, but the secondary water supply may be less than the primary water supply amount.

According to an embodiment of the present specification, there is provided a method of measuring the humidity of the soil through a sensing electrode using a potentiostat and using the same.

In addition, according to one embodiment, the humidity of the soil in the area where the crop is located can be accurately grasped in real time, and irrigation can be performed at an appropriate time.

In addition, in one embodiment, the amount of the additive may be determined based on the humidity of the soil in the region where the crop is located.

In addition, an embodiment may provide a method of more accurately estimating the humidity of the soil around a crop using sensor data of irregularly located sensors and the position of the crop.

In addition, in one embodiment, it is possible to provide a method of appropriately reducing or increasing the amount of water and nutrients provided to a crop for the purpose of improving the growth of the crop and the quality of the fruit.

It should be understood that the effect of the present specification is not limited to the matters described above, and may be extended to various contents that can be derived from the detailed description of the embodiments of the present invention below.

1 is a block diagram showing the configuration of a smart farm soil management apparatus 1000 for an open field through real-time soil analysis according to an embodiment of the present specification.
2 shows an example of the sensor node device 100 according to an embodiment of the present specification.
3 is a view for explaining the structure of the irrigation device and the additive supply device according to an embodiment of the present specification.
4 is an exemplary diagram illustrating a state in which the sensor node devices 110 and 120 and the irrigation units 210-230 are installed in the field according to an embodiment of the present specification.
5 shows a change in soil humidity by the control device 400 according to an embodiment of the present specification.
6 shows a change in the humidity of the soil around one crop according to an embodiment of the present specification.
7 is a view for explaining the position and operation range of the crop and the irrigation unit according to an embodiment of the present specification.

In the description of the embodiments of the present specification, if it is determined that a detailed description of a known configuration or function may obscure the gist of the embodiment of the present specification, a detailed description thereof will be omitted. In addition, in the drawings, parts not related to the description of the embodiments of the present specification are omitted, and similar reference numerals are attached to similar parts.

In the embodiments of the present specification, when a component is "connected", "coupled" or "connected" with another component, it is not only a direct connection relationship, but also an indirect relationship where another component exists in the middle. It can also include human connections. In addition, when a component is said to "include" or "have" another component, it means that another component may be further included without excluding other components unless otherwise stated. .

In the embodiments of the present specification, terms such as first, second, etc. are used only for the purpose of distinguishing one component from other components, and unless otherwise specified, do not limit the order or importance between the components. does not Accordingly, within the scope of the embodiments herein, a first component in an embodiment may be referred to as a second component in another embodiment, and similarly, a second component in an embodiment is referred to as a first component in another embodiment. can also be called

In the embodiment of the present specification, the components that are distinguished from each other are for clearly explaining each characteristic, and the components do not necessarily mean that the components are separated. That is, a plurality of components may be integrated to form one hardware or software unit, or one component may be distributed to form a plurality of hardware or software units. Accordingly, even if not specifically mentioned, such integrated or dispersed embodiments are also included in the scope of the embodiments of the present specification.

In the present specification, the network may be a concept including both wired and wireless networks. In this case, the network may mean a communication network in which data exchange between the device and the system and devices can be performed, and is not limited to a specific network.

Embodiments described herein may have aspects that are entirely hardware, partly hardware and partly software, or entirely software. As used herein, “unit,” “device,” or “system,” or the like, refers to hardware, a combination of hardware and software, or a computer-related entity such as software. For example, as used herein, a part, module, device, or system is a running process, a processor, an object, an executable, a thread of execution, a program, and/or a computer. (computer), but is not limited thereto. For example, both an application running on a computer and a computer may correspond to a part, module, device, or system of the present specification.

In addition, in the present specification, the device may be a fixed device such as a PC or home appliance having a display function, as well as a mobile device such as a node for a smart farm, a smart phone, a tablet PC, or a wearable device. Also, as an example, the device may be an Internet of Things (IoT) device. That is, in the present specification, a device may refer to devices capable of operating an application, and is not limited to a specific type. Hereinafter, for convenience of description, a device in which an application operates is referred to as a device.

In the present specification, the communication method of the network is not limited, and the connection between each component may not be connected in the same network method. The network may include not only a communication method using a communication network (eg, a mobile communication network, a wired Internet, a wireless Internet, a broadcasting network, a satellite network, etc.) but also short-range wireless communication between devices. For example, the network may include all communication methods through which an object and an object can network, and is not limited to wired communication, wireless communication, 3G, 4G, 5G, or other methods. For example, a wired and/or network may be a Local Area Network (LAN), a Metropolitan Area Network (MAN), a Global System for Mobile Network (GSM), an Enhanced Data GSM Environment (EDGE), a High Speed Downlink Packet Access (HSDPA), W-CDMA (Wideband Code Division Multiple Access), CDMA (Code Division Multiple Access), TDMA (Time Division Multiple Access), Bluetooth, Zigbee, Wi-Fi, VoIP (Voice over) Internet Protocol), LTE Advanced, IEEE802.16m, WirelessMAN-Advanced, HSPA+, 3GPP Long Term Evolution (LTE), Mobile WiMAX (IEEE 802.16e), UMB (formerly EV-DO Rev. C), Flash-OFDM, iBurst and MBWA (IEEE 802.20) systems, HIPERMAN, Beam-Division Multiple Access (BDMA), Wi-MAX (World Interoperability for Microwave Access), and ultrasonic-based communication can refer to a communication network by one or more communication methods selected from the group consisting of However, the present invention is not limited thereto.

Components described in various embodiments do not necessarily mean essential components, and some may be optional components. Accordingly, an embodiment composed of a subset of the components described in the embodiment is also included in the scope of the embodiment of the present specification. In addition, embodiments including other components in addition to the components described in various embodiments are also included in the scope of the embodiments of the present specification.

Hereinafter, embodiments of the present specification will be described in detail with reference to the drawings.

1 is a block diagram showing the configuration of a smart farm soil management apparatus 1000 for an open field through real-time soil analysis according to an embodiment of the present specification. Referring to FIG. 1 , the smart farm soil management device 1000 for open land through real-time soil analysis includes a sensor node device 100 , a irrigation device 200 , an additive supply device 300 , and a control device 400 . .

In one embodiment, the sensor node device 100 may be composed of one or more sensor node devices 110 , 120 , 130 ... . The sensor node device 100 may be installed at a predetermined interval in the field. At least a part of the sensor node device 100 may be inserted into soil to measure soil data of one or more of temperature, humidity, and PH in the soil.

2 shows an example of the sensor node device 100 according to an embodiment of the present specification. As described above, the sensor node device 100 may be configured with one or more sensor node devices 110 to 130 ?, at least some of which may be configured with the components described in FIG. 2 . Referring to FIG. 2 , the sensor node device 100 may include a sensing unit 111 and a potentiostat unit 112 . In another example, the sensor node device 100 may further include a communication unit 113 and a processing unit 114 .

In an embodiment, the sensing unit 111 may include a sensing electrode 111b, a reference electrode 111a, and a counter electrode 111c. The potentiostat unit 112 is a device for controlling the voltage of the sensing electrode 111b to provide a voltage of a waveform desired by the user to the sensing electrode, and to maintain a constant current potential.

The communication unit 113 of the sensor node device 100 may communicate the sensing information (raw or processed form of soil data) obtained from the sensing unit 111 with another device (control device or other sensor node device, etc.). . In addition, the communication unit 113 may communicate the soil data or other data processed by the processing unit 114 with the other device. The communication method is not limited to a specific communication protocol as described above.

Referring further to FIG. 2 , in an embodiment, the sensing unit 111 may include a plurality of layers. In this case, each layer means layers in which the environmental conditions of the corresponding layer have meaning in the growth of crops. For example, the first layer may refer to a section from the soil surface to a depth of 15 cm, the second layer to a depth of 15 to 25 cm from the surface, and the third layer to a depth from the soil surface to a depth of 25 to 50 cm. , but is not limited thereto. The sensing unit 111 may distinguish the soil data obtained from each layer and transmit it to the communication unit 113 or the processing unit 114 . In addition, the potentiostat unit 112 may also control the input voltage to apply different voltages to each layer.

That is, the sensing unit 111 may be configured to separately collect soil data related to each layer 201-203. For example, by independently measuring the temperature and/or humidity related to each layer in the soil, it is possible to specifically and three-dimensionally grasp the environmental conditions affecting the growth of crops.

The processing unit 114 may extract soil data characteristics based on soil data acquired by the sensing unit 111 and/or soil data acquired from other sensor node devices. The processing unit 114 may be configured to process instructions of a computer program by having one or more processors capable of performing arithmetic, logic, and input/output operations.

In another embodiment, the software components may be loaded into the memory through the communication unit 113 rather than a computer-readable recording medium. For example, the at least one program is a computer program (eg, the above-described application) installed by files provided through a network by a file distribution system (eg, an external server) that distributes developers or application installation files. may be loaded into memory based on

According to an additional embodiment, the sensor node device 100 may further include a GPS module and an acceleration sensor. The GPS module and the acceleration sensor acquire the installation location and state of the sensor node device 100 as soil data, so that the smart farm control system for the field can specifically exclude error data from modeling the crop. .

For example, when the sensor node device 100 is tilted more than a certain angle compared to the normal installation form due to the influence of wind or contact with animals, people, or the like, or is moved to a place more than a certain distance from the initially installed position, from each sensor Since the acquired data may not accurately reflect the growing environment of crops, the acquired soil data may be judged to have an error, and modeling data may be created or immediately notified to the manager except for this.

3 is a view for explaining the structure of the irrigation device and the additive supply device according to an embodiment of the present specification. In one example, the irrigation device 200 is a device for supplying water to the soil, and may include a plurality of irrigation units 210 to 230 ?. Referring to FIG. 3 , the irrigation device 200 may receive water from a water supply source and individually supply water to one or more irrigation units 210 to 230 . The irrigation device 200 may independently manage the amount of water supplied to each irrigation unit.

In addition, the additive supply device 300 is a device for supplying additives to the soil, and the additive may be input to the irrigation device 200 or may be individually supplied to each irrigation unit. In order to individually supply additives to each irrigation unit, the additive supply device 300 may include one or more supply units 310 to 330?. Here, the additive means fertilizer, but is not limited thereto, and may include any material necessary for the growth of crops other than water.

Referring back to FIG. 1 , the control device 400 controls the irrigation device 200 or the additive supply device 300 based on the soil data measured by the sensor node device 100 to control the water supplied to the soil. and the amount of additives can be controlled. Here, the control device 400 may individually control not only the irrigation device 200 but also the individual irrigation units 110 ... and the supply units 310 ... . Specifically, the control device 400 may determine the humidity of the soil based on electrical data obtained from the sensing electrode of the sensing unit 111 . The control device 400 may determine the amount of water to be provided based on the humidity of the soil, and may determine the amount of the additive to be supplied based on the determined amount of water. This is because if the humidity of the soil is not maintained at an appropriate value, the provided additives (fertilizers, etc.) are not absorbed by the crops but are thrown away, and may contaminate the soil.

In addition, the control device 400 may be connected to a sensor node device, a water irrigation device, an additive supply device, and the like in a wired or wireless communication connection.

4 is an exemplary diagram illustrating a state in which the sensor node devices 110 and 120 and the irrigation units 210-230 are installed in the field according to an embodiment of the present specification. Referring to FIG. 4 , it is shown that the sensor node device is partially inserted into the soil around the crops 1 and 2 and the irrigation unit is installed inside the soil. However, this is exemplary and the irrigation unit may be installed outside the soil. In this installed state, the control device 400 may control the humidity in the soil by controlling the irrigation unit based on the soil humidity data (soil data) obtained from the sensor node device 100 .

In one example, the control device 400 may determine the amount of water to be supplied to the vicinity of the sensor node device based on the amount and time for which the humidity of the soil decreases. To this end, a specific sensor node device and an irrigation unit may be associated with each other. For example, in response to a sensing result of the first sensor node device, the first irrigation unit may be set to operate closest to or closest to the first sensor node device and located upstream (high terrain). In addition, the outdoor area may be divided into a plurality of unit areas, and the operation of the irrigation unit included in the unit area may be controlled based on the average of soil data of the sensor node devices included in each unit area.

5 shows a change in soil humidity by the control device 400 according to an embodiment of the present specification. The control device 400 may determine the amount of water to be supplied based on a change in humidity in a section in which the humidity of the soil continuously decreases. 5 shows a change in soil humidity obtained by a first sensor node device adjacent to a first crop.

Referring to the graph of FIG. 5 , the initial soil humidity drops from h21 to h11 at time t11. Humidity may decrease due to surface heat and water absorption by the roots. When the humidity of the soil falls below the first threshold value h11, the control device 400 may start supplying the first water through the first irrigation unit closest to the sensor node device (interval t11 to t12).

The primary water supply can rise to the humidity (h12) at the point where the soil humidity starts to decrease continuously. At this time, the slope of the humidity increase (water supply speed, flow rate) may be determined to correspond to the humidity decrease trend before the first water supply. That is, from t11, parts 0 to t11 and parts t11 to t12 may have a graph shape corresponding to each other (eg, a decalcomanie form or a form reduced by 1/N time of the reduced time, where N is an integer).

Also, in one example, the control device 400 may not perform water supply or adjust the amount of water supply even if the humidity of the soil is less than or equal to the first threshold based on external information. Here, the external information may be related to rainfall as weather information. When a large amount of rainfall is expected after a predetermined time, the control device 400 may limit the water supply even if the humidity of the current soil is less than or equal to a threshold value. Unlike indoors, it is difficult to prepare a separate device for irregular rainfall, so the outdoor area accepts most of the rain. Therefore, the control device 400 may adjust the humidity of the soil to a predetermined value or less in preparation for the upcoming rainfall.

Referring to FIG. 5 , it can be seen that the humidity of the soil reaches the first threshold h11 at t13, but the control device 400 does not supply water, so that the humidity of the soil continuously decreases below the first threshold h11. . Meanwhile, when the expected rainfall amount is small, the controller 400 may determine an additional water supply amount except for a portion corresponding to the expected rainfall amount. In this case, only a fraction of the rainfall is transmitted to the roots of the crop, so the water supply can be determined taking these losses into account. The ratio of the amount of supplied water X1 and the actual amount of water X2 delivered to the roots of the crop may be determined through a predefined X1-X2 relationship table or machine learning, but is not limited thereto.

On the other hand, in the present specification, the control device 400 determines the amount and time of water to be supplied based on the continuous decrease in humidity, when water supply is performed to maintain a fixed humidity value, rather than when water supply is gradually insufficient. This is because the crop yields less fruit. Accordingly, the control device 400 of the present specification may gradually reduce the amount of water and nutrients supplied to the soil for a predetermined period so that the crop can grow further. According to the experiment, it can be meaningful to reduce the amount of water and nutrients for a predetermined period as above because crops are shown to bear more fruit and grow when there is a temporary shortage of water and nutrients than when water and nutrients are continuously sufficient.

6 shows a change in the humidity of the soil around one crop according to an embodiment of the present specification. Referring to FIG. 6 , at the initial stage (~ t21), the humidity drops due to moisture absorption and evaporation of crops and reaches a first threshold value (h23). can be raised to After that, the humidity falls from t22 to t23 due to water absorption of crops and evaporation of water from the ground. Water supply is not performed at the first threshold value h23, and the second water supply is provided at the second threshold value h24, which is less than the first threshold value. This can be done. In addition, the secondary water supply may be set to h22 lower than the target humidity of the primary water supply. Accordingly, the control device may adjust the amount of watering so that the amount of moisture provided to the crop is gradually decreased.

In addition, when the soil humidity is a predetermined value (eg, h22), when the crop has the highest additive absorption rate, the control device 400 may supply the additive in the region where the humidity is the predetermined value. As described above, the additive may be supplied together with water, but is not limited thereto.

7 is a view for explaining the position and operation range of the crop and the irrigation unit according to an embodiment of the present specification. In FIG. 7 , the management range a1 is an area related to crop 1(1), and the management range a2 is an area related to crop 2(2). The management ranges a1 and a2 can be decided by the manager according to the type of crop and the growth condition. One or more sensor node devices and irrigation units may be located within the management range of each crop. Referring to FIG. 7 , one sensor node device 110 and one irrigation unit 210 are installed in the management range a1 , but two irrigation units 220 and 230 are installed in the management range a2 . Since there is a location where it is difficult to install a sensor or an irrigation part depending on the soil environment, the sensor node device or the irrigation part may be located in an irregular position as shown in FIG. 7 . This specification proposes a method to obtain a management effect equivalent to the case of uniformly installed by appropriately controlling the sensor node device and the irrigation unit installed in such irregular positions.

In an embodiment, the control device 400 may start the second water supply through the first irrigation unit when the humidity of the soil falls below the second threshold value after the first water supply. Here, the first threshold value may be set to be greater than the second threshold value. That is, as described above, after the primary water supply, the secondary water supply may be started at a lower humidity than that of the primary water supply, and may be performed in an amount equal to or smaller than the primary water supply.

In addition, in one embodiment, the control device 400, after the first water supply, when the humidity of the soil falls below the first threshold value, starts the second water supply, but the second water supply is a second water supply from the crop. It can be made through the second irrigation part adjacent to the Referring to FIG. 7 , when the humidity acquired from the first sensor node device 110 falls below the first threshold and the second water supply starts, the control device 400 performs the first irrigation closest to the crop 1 . The irrigation may be performed in the second closest second irrigation unit 220 instead of the unit 210 . As the humidity in a place further away from the previous irrigation position increases, the roots of the crop 1 can grow more actively toward the second irrigation part.

Meanwhile, when the second irrigation unit 220 is operated based on only the humidity obtained from the first sensor node device 110 as described above, the crop 2 adjacent to the second irrigation unit 220 may be affected. To this end, the control device 400 determines whether to operate the second irrigation unit 220 based on the humidity of the soil in the area obtained by the second sensor node device 1200 closest to the second irrigation unit, When the soil in the area acquired by the second sensor node device does not require irrigation, secondary water supply may be performed through the first irrigation unit. Here, whether the soil does not require irrigation may be determined based on the humidity of the soil obtained by the second sensor node device and a predetermined humidity threshold.

Also, the humidity Y1 of the soil obtained by each sensor node device and the humidity Y2 of the soil surrounding the crops located in the vicinity thereof may be different from each other. The control device according to an embodiment of the present specification is to determine the humidity of the soil around each crop, 1) the humidity information of the soil obtained by sensor node devices located within a predetermined distance based on the target crop, 2) the target crop and the distance between each sensor node device 3) The difference in ground height between the target crop and each sensor node device can be used. For example, the first to third sensor node devices are located around the first crop, the distance between the crop and the sensor node device is close in the order of the first to third sensor node devices, and the height difference is in the order of the first to third sensor node devices If less, the highest weight is given to the humidity information obtained from the first sensor node device, and the smallest weight is given to the humidity information obtained from the third sensor node device, and then the average of the humidity values obtained from each sensor node device may be determined as the humidity of the soil surrounding the first crop.

As such, the soil management apparatus according to an embodiment of the present specification senses the humidity of the soil in real time using a potentiostat, adjusts the amount of water supply based on the change in soil humidity, and measures the humidity of the soil affecting crops. It may have the advantage of preventing the loss of additives by correcting the positions and measurement values of the plurality of sensors to determine and supplying the additives at a specific humidity.

Although the present specification described above has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. However, such modifications should be considered to be within the technical protection scope of the present specification. Accordingly, the true technical protection scope of the present specification should be defined to include other implementations, other embodiments, and equivalents to the claims by the spirit of the appended claims.

Claims (6)

One or more sensor node devices installed at predetermined intervals in the field, for measuring soil data of one or more of soil temperature, humidity, and PH;
irrigation system to supply water to the soil;
an additive supply device for supplying additives to the soil; and
Smart farm soil for open land through real-time soil analysis including a control device for controlling the amount of water and additives supplied to the soil by controlling the irrigation device or the additive supply device based on the soil data measured by the sensor node device management device.
According to claim 1,
The sensor node device,
sensing electrode; reference electrode; counter electrode; and a potentiostat unit providing a voltage to the sensing electrode,
The control device, smart farm soil management device for open land through real-time soil analysis, characterized in that based on the electrical data obtained from the sensing electrode to determine the humidity of the soil.
3. The method of claim 2,
The control device determines the amount of water to be supplied to the vicinity of the sensor node device based on the time and amount for which the humidity of the soil decreases, and the time for which the humidity of the soil decreases means a continuous decrease in humidity,
The control device, when the humidity of the soil falls below a first threshold value, the first water supply through the first irrigation unit of the irrigation device closest to the sensor node device. Smart farm soil management device for use.
4. The method of claim 3,
The control device may start supplying secondary water through the first irrigation unit when the humidity of the soil falls below a second threshold value after supplying the first water, wherein the first threshold value is the second threshold value. Smart farm soil management device for open land through real-time soil analysis, characterized in that it is greater than the value.
4. The method of claim 3,
The control device, after the first water supply, when the humidity of the soil falls below a first threshold value, starts a second water supply, and the second water supply is a second adjacent second water supply from the crop. Smart farm soil management device for open land through real-time soil analysis, characterized in that it is done through the irrigation unit.
6. The method of claim 5,
The control device determines whether to operate the second irrigation unit based on the humidity of the soil in the area obtained by the second sensor node device closest to the second irrigation unit,
When the soil in the area obtained by the second sensor node device does not require irrigation, the second water supply is performed through the first irrigation unit, and the second water supply is less than the first water supply amount Smart farm soil management device for open land through real-time soil analysis.

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