WO2017195534A1

WO2017195534A1 - Soil condition evaluation device, method and program

Info

Publication number: WO2017195534A1
Application number: PCT/JP2017/015487
Authority: WO
Inventors: 康男小柳; 片桐　哲也; 弘志藤井
Original assignee: コニカミノルタ株式会社
Priority date: 2016-05-10
Filing date: 2017-04-17
Publication date: 2017-11-16
Also published as: CN109154591A; JPWO2017195534A1; KR20180127494A; KR102163610B1; JP6881440B2; CN109154591B

Abstract

Provided are a soil condition evaluation device, a soil condition evaluation method and a soil condition evaluation program, in which: a heat distribution image is obtained of a field to be evaluated; the air temperature of the field is obtained; and an evaluation value that represents the degree of reducibility of the soil in the field is found, on the basis of the obtained heat distribution image of the field and the obtained air temperature of the field.

Description

Soil condition evaluation apparatus, method and program

The present invention relates to a soil state evaluation apparatus, a soil state evaluation method, and a soil state evaluation program for evaluating the state of soil in a field from a reducing viewpoint.

Since crops are generally grown in soil, the state of the soil affects the yield and quality of the crop. In particular, due to the impact of global warming in recent years, crops are damaged, and the frequency of damaging their soundness is increasing. On the other hand, the agricultural management environment is harsh, and there is a need to reduce production costs. For this reason, it is desirable to appropriately evaluate the state of the soil and appropriately implement countermeasures according to the evaluation result, and a technique for appropriately evaluating the state of the soil is desired.

Such a technique for evaluating the state of the soil is disclosed in Patent Document 1, for example. The soil analysis method disclosed in Patent Document 1 is a soil analysis method for analyzing the amount of nutrients for growing various crops in a predetermined soil, the step of cutting out the predetermined soil at a predetermined depth and collecting a sample And a step of treating the collected sample with a treatment solution containing a strong acid to obtain an extract, and chemically analyzing the obtained extract with an ion chromatograph to accurately grasp the amount of nutrients in the soil, It comprises.

By the way, the soil analysis method disclosed in Patent Document 1 is considered to be able to analyze the nutrient content of the soil relatively accurately because a sample is actually collected from the soil and chemically analyzed by an ion chromatograph. And in said patent document 1, the [0012] paragraph states that "sampling may be performed at a plurality of locations appropriately distributed so that necessary data can be collected from the whole farm so that an accurate analysis result can be obtained. However, it is preferable that the sampling point is a total of 6 points, which are arbitrary 2 points on the four corners and diagonal lines of the whole farm.

On the other hand, when evaluating so-called reduction damage, there are few cases where reduction damage occurs in the entire field, and there are many cases where it occurs in various parts of the field. For this reason, like the soil analysis method disclosed in Patent Document 1, when trying to evaluate a reduction disorder by sampling a sample from soil, it must be sampled at a number of locations across the entire field, It takes time and is inefficient. In the first place, sampling a sample from soil itself takes time.

JP 2014-106089 A (Patent No. 5351325)

This invention is an invention made | formed in view of the above-mentioned situation, The objective is by providing the soil condition evaluation apparatus, the soil condition evaluation method, and the soil condition evaluation program which can evaluate the degree of reducibility more efficiently. is there.

In the soil state evaluation device, the soil state evaluation method, and the soil state evaluation program according to the present invention, a heat distribution image in the field to be evaluated is acquired, the temperature of the field is acquired, and the acquired heat distribution image of the field is acquired. And an evaluation value representing the degree of reducibility in the soil of the field based on the acquired temperature of the field.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a figure for demonstrating correlation with generation | occurrence | production of the reduction | restoration disorder | damage | failure in a farm field, and the temperature of a crop. It is a figure for showing the composition of the soil condition evaluation system in an embodiment. It is a figure which shows the evaluation material conversion information table memorize | stored in the soil condition evaluation apparatus of the said soil condition evaluation system. It is a flowchart which shows operation | movement of the soil condition evaluation apparatus of the said soil condition evaluation system. It is a schematic diagram which shows the temperature distribution image of an agricultural field as an example. It is a figure which shows the evaluation value map calculated | required based on the temperature distribution image of the agricultural field typically shown in FIG. It is a figure which shows the material amount map calculated | required based on the evaluation value map shown in FIG.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. In this specification, when referring generically, it shows with the reference symbol which abbreviate | omitted the suffix, and when referring to an individual structure, it shows with the reference symbol which attached the suffix.

(Correlation)
First, the correlation between the degree of reducibility in the field and the temperature of the crop will be described based on an experimental example.

FIG. 1 is a diagram for explaining the correlation between the occurrence of a reduction disorder in a field and the temperature of a crop. FIG. 1A is a diagram showing a heat distribution image of a paddy field, and FIG. 1B is a diagram showing an average value of the number of spikes in rice grown in the paddy field. The paddy field to be tested is an area where 20 kg of lime nitrogen is supplied per 10 ares (a) as a material for improving reduction disorder, and is a lime N area shown on the left side of the page, and an area where the material is not supplied. It was divided into the control group shown on the right side. Water is drawn into the paddy fields of the lime N ward and the control ward from the “water mouth” shown above the paper, flows from the top of the paper to the bottom of the paper, and drains from the “water bottom”. Each of the lime N group and the control group is divided into three in the horizontal direction on the paper, and divided into six in the vertical direction on the paper, and divided into 3 × 6 = 18 sub-regions. The average value of the number of ears of rice is a value obtained by averaging the number of ears of rice grown in one sub-region, and is displayed in FIG. 1B in units of book / m ² . In the heat distribution image of the paddy field shown in FIG. 1A, the darker the color on the gray scale, the higher the heat radiation from the paddy field, in other words, the temperature of the paddy field, and in other words, the higher the temperature of the rice. The temperature of the surrounding environment of the paddy field when the heat distribution image of the paddy field shown in FIG. 1A was taken was 31.2 ° C.

In FIG. 1B, in the control section on the right side of the page, there are 9 sub-regions with an average number of rice spikes of 400 / m ² and an average value of rice spikes of 500 / m ² . There are 8 sub-regions and 1 sub-region with an average number of rice spikes of 600 / m ² , while in the lime N area on the left side of the page, the average number of rice spikes is There are 2 sub-regions with 400 lines / m ^2, 4 sub-regions with an average number of rice spikes of 500 / m ² , and an average value of 600 rice spikes / ^m is ^two sub-areas is twelve. Therefore, in the lime N area, the degree of reducibility is small in most areas due to the material of lime nitrogen, and the occurrence of reductive damage is suppressed. As a result, rice grows smoothly. On the other hand, in the control plot, on the contrary, the degree of reducibility is increased in some places, reducing damage occurs in the places, and rice growth is not smooth. In the control group, in particular, in the nine sub-regions indicated by circles in FIG. 1B, the average number of rice ears is 435 / m ² to 498 / m ² in the sub-region. It has become a poor growth due to a reduction disorder.

On the other hand, when this is seen in the heat distribution image, as shown in FIG. 1A, the lime N district has a relatively high number of sub-regions (the rice field temperature is high, the rice temperature is high) less than the control zone. It can be seen that the temperature of the paddy field (rice temperature) in the lime N zone is lower than the temperature of the paddy field (rice temperature) in the control zone. In particular, the temperature (rice temperature) of the nine sub-regions indicated by circles in FIG. 1B is clearly higher than the temperature (rice temperature) of the paddy field in the lime N district adjacent thereto.

This is because, in the lime N ward, the degree of reducibility is small and the occurrence of reductive damage is suppressed in most areas due to the material of lime nitrogen. As a result, the rice grows smoothly and the temperature is 31.2. Although it is relatively hot at ℃, moisture is transported throughout the rice, and the amount of transpiration from the pores is steady, so it is considered that the temperature of the paddy field (rice temperature) has decreased, On the contrary, in the control plot, the degree of reducibility increases in some places, the reduction damage occurs in these places, the growth of rice is not smooth, and the temperature is relatively hot at 31.2 ° C. Is not carried, and the amount of transpiration from the pores is reduced, which is considered to be because the temperature of the paddy field (rice temperature) has increased.

Thus, there is a correlation between the degree of reducibility in the field and the temperature of the crop.

(Soil condition evaluation system S (heat distribution image generation device M, soil condition evaluation device P))
Drawing 2 is a figure for showing the composition of the soil condition evaluation system in an embodiment. FIG. 3 is a diagram showing an evaluation material conversion information table stored in the soil condition evaluation device of the soil condition evaluation system.

From such knowledge, the soil condition evaluation apparatus according to the present embodiment is an apparatus that evaluates the condition of the soil, and acquires a heat distribution image acquisition unit that acquires a heat distribution image in the evaluation target field, and the temperature of the field. Based on the field temperature acquisition unit, the heat distribution image of the field acquired by the heat distribution image acquisition unit, and the field temperature acquired by the field temperature acquisition unit. A soil reducibility evaluation unit for obtaining an evaluation value representing the degree. In such a soil condition evaluation apparatus, the heat distribution image acquisition unit captures infrared rays emitted from the field to be evaluated, and generates a heat distribution image (thermogram) representing the heat distribution as a diagram. Although it may be a generation device (thermograph, infrared camera) itself, in the following, as an example, the heat distribution image acquisition unit wirelessly receives a heat distribution image in a field to be evaluated from the heat distribution image generation device. A communication interface unit (for example, a communication card).

More specifically, in FIG. 2, the soil state evaluation system S includes a heat distribution image generation device M and a soil state evaluation device P connected to the heat distribution image generation device M so as to be wirelessly communicable.

The heat distribution image generation device M is a device that generates a heat distribution image SP in the field AR to be evaluated. The heat distribution image generation device M is attached to the tip of a long rod such as a cocoon, for example, and generates a heat distribution image SP of the field overlooking the field AR from above, or is relatively adjacent to the field AR. If there is a high building, the heat distribution image SP of the field may be generated from the building, but in this embodiment, an aircraft is provided so that the heat distribution image SP of the field is generated from the sky. It is configured.

More specifically, as shown in FIG. 2, the heat distribution image generation device M includes a GPS 21, a temperature measurement unit 22, a control unit 23, a heat distribution image generation unit 24, a storage unit 25, and a communication interface unit 26. And an aircraft 27.

The aircraft 27 is a device that flies in the atmosphere, such as a balloon, an airship, an airplane, a helicopter, and a multicopter. The aircraft 27 may be a manned aircraft, but is preferably an unmanned aircraft (drone) by radio controlled flight (guided flight) or autonomous flight. In this embodiment, the aircraft 27 is connected to the control unit 23 and flies according to the control of the control unit 23 by guided flight or autonomous flight.

A GPS (Global Positioning System) 21 is a device that is connected to the control unit 23 and measures the position Pap of the aircraft 27 by a satellite positioning system for measuring the current position on the earth according to the control of the control unit 23. The positioning result (position Pap (latitude Xap, longitude Yap, altitude Zap)) is output to the control unit 23. The GPS 21 may be a GPS having a correction function for correcting an error such as DGSP (Differential GSP).

The temperature measuring unit 22 is connected to the control unit 23 and is a temperature sensor that measures the field temperature Ts under the control of the control unit 23, and outputs the temperature Ts of the measurement result to the control unit 23. In the present embodiment, since the temperature Ts of the field is measured by the temperature measuring unit 22 mounted on the aircraft 27, it is preferable that the aircraft 27 fly in a relatively low sky. When the temperature Ts of the field measured by the temperature measuring unit 22 mounted on the aircraft 27 is different from the actual temperature Tr of the field on the ground, the temperature is measured by the temperature measuring unit 22 mounted on the aircraft 27. The difference between the measured field temperature Ts and the actual field temperature Tr on the ground is measured by a plurality of samples in advance for each altitude of the aircraft 27, and by using this result, the temperature mounted on the aircraft 27 is measured. The field temperature Ts measured by the measurement unit 22 may be corrected so as to be the actual field temperature Tr of the field on the ground.

The heat distribution image generation unit 24 is connected to the control unit 23, and in accordance with the control of the control unit 23, captures infrared rays emitted from the evaluation target field AR, and displays the heat distribution as a diagram (thermogram). It is a heat distribution image generation device (thermograph, infrared camera) that generates SP, and outputs the generated heat distribution image SP to the control unit 23. Such a heat distribution image generation unit 24 is, for example, an image forming optical system that forms an image of infrared rays in the field AR to be evaluated on a predetermined image forming surface, and a light receiving surface that is aligned with the image forming surface. An infrared image sensor that converts the image into an electrical signal, and an output of the infrared image sensor is subjected to image processing such as conversion of infrared radiation amount into heat (temperature). Image data) An image processing unit that generates SP is provided.

The communication interface unit (communication IF unit) 26 is a communication circuit that is connected to the control unit 23 and performs wireless communication under the control of the control unit 23. The communication IF unit 26 generates a communication signal containing data to be transferred input from the control unit 23 according to a communication protocol used between the heat distribution image generation device M and the soil condition evaluation device P. The generated communication signal is transmitted to the soil condition evaluation device P. The communication IF unit 26 receives a communication signal from the soil condition evaluation device P, extracts data from the received communication signal, converts the extracted data into data in a format that can be processed by the control unit 23, and controls the control unit 23. Output to. The communication IF unit 26 includes, for example, a communication interface circuit that conforms to the IEEE 802.11 standard or the like.

The storage unit 25 is a circuit that is connected to the control unit 23 and stores various predetermined programs and various predetermined data under the control of the control unit 23. Examples of the various predetermined programs include a control program for controlling each

unit

21, 22, 24 to 27 of the heat distribution image generating apparatus M according to the function of each unit, positioning by the GPS 21, and a temperature measuring unit 22. The GPS 21, the air temperature measurement unit 22, and the heat distribution image generation unit 24 respectively perform the positioning, the temperature measurement, and the imaging so that the temperature measurement by the image capturing and the image capturing by the heat distribution image generation unit 24 are synchronized with each other. Generated by the GPS 21, the temperature measurement unit 22, and the heat distribution image generation unit 24, the temperature Ts of the measurement result, and the imaging result. A data transmission program for transmitting the heat distribution image SP from the communication IF unit 26 to the soil condition evaluation device P using a communication signal It includes control processing program and the like. The various kinds of predetermined data include data necessary for processing to capture and generate a heat distribution image SP of a field, such as a communication address of the soil condition evaluation device P, for example. The storage unit 25 includes, for example, a ROM (Read Only Memory) that is a nonvolatile storage element, an EEPROM (Electrically Erasable Programmable Read Only Memory) that is a rewritable nonvolatile storage element, and the like. The storage unit 25 includes a RAM (Random Access Memory) serving as a working memory of the control unit 23 that stores data generated during execution of the predetermined program.

The control unit 23 controls each

unit

21, 22, 24 to 27 of the heat distribution image generating apparatus M according to the function of each unit, and controls the entire heat distribution image generating apparatus M. The control unit 23 performs the positioning, the temperature measurement, and the imaging to the GPS 21, the temperature measurement by the temperature measurement unit 22, the temperature measurement by the temperature measurement unit 22, and the imaging by the heat distribution image generation unit 24, respectively. The temperature measurement unit 22 and the heat distribution image generation unit 24 are each executed. The control unit 23 obtains the positioning result Pap obtained by the GPS 21, the temperature measuring unit 22 and the heat distribution image generating unit 24, the temperature Ts of the measurement result, and the heat distribution image SP generated by imaging, A communication signal is transmitted from the communication IF unit 26 to the soil condition evaluation apparatus P. The controller 23 includes, for example, a CPU (Central Processing Unit) and its peripheral circuits.

And these GPS21, the temperature measurement part 22, the control part 23, the heat distribution image generation part 24, the memory | storage part 25, and the communication IF part 26 are mounted in the aircraft 27, and are arrange | positioned in an appropriate position.

On the other hand, as shown in FIG. 2, the soil condition evaluation apparatus P includes a communication IF unit 11, a control processing unit 12, a storage unit 13, an input unit 14, and an output unit 15.

The communication IF unit 11 is a communication circuit that is connected to the control processing unit 12 and performs wireless communication under the control of the control processing unit 12, similarly to the communication IF unit 26. The communication IF unit 11 includes, for example, a communication interface circuit that complies with the IEEE 802.11 standard or the like.

As will be described later, since the heat distribution image SP in the field AR to be evaluated and the temperature Ts of the field are acquired from the heat distribution image generation device M by the communication IF unit 11, the communication IF unit 11 It corresponds to an example of a heat distribution image acquisition unit that acquires the heat distribution image SP in the field AR, and also corresponds to an example of a field temperature acquisition unit that acquires the temperature Ts of the field.

The input unit 14 is connected to the control processing unit 12 and, for example, various commands such as a command for instructing start of evaluation, and various data necessary for evaluating the field AR such as the name of the field AR and evaluation conditions, for example. A device that inputs to the soil condition evaluation apparatus P, for example, a plurality of input switches assigned with predetermined functions, a keyboard, a mouse, and the like. The evaluation condition is a predetermined condition set in advance when actually measuring the heat distribution image SP and the temperature Ts of the field, and is compared with the set evaluation condition stored in the setting evaluation condition information storage unit 135 described later. Is done. In the present embodiment, the set evaluation condition is a condition for determining whether or not an evaluation value is significantly obtained by a soil reducibility evaluation unit 123 described later. In view of the reduction failure process described above, the setting evaluation condition preferably includes that the field temperature Ts is equal to or higher than a predetermined temperature Th set in advance, and in this embodiment, the weather is sunny or sunny. It further includes that the time is from 9:00 to 15:00. For this reason, the evaluation condition includes the temperature Ts of the field. The temperature Ts of the field is measured by the temperature measuring unit 22, and the measured temperature Ts of the field is acquired from the heat distribution image generating device M by the communication IF unit 11. Therefore, the communication IF unit 11 corresponds to an example of an evaluation condition receiving unit that receives an evaluation condition from the outside. The predetermined temperature Th is set to an appropriate value, for example, 25 ° C., 28 ° C., 30 ° C., or the like by considering the reduction disorder process. From the above, the evaluation condition includes weather and time. These weather and time are input from the input unit 14. Therefore, the input unit 14 corresponds to another example of an evaluation condition receiving unit that receives an evaluation condition from the outside.

The output unit 15 is connected to the control processing unit 12, and according to the control of the control processing unit 12, the command and data input from the input unit 14, the evaluation value EV and the amount of material obtained by the soil condition evaluation device P A device that outputs MV or the like, for example, a display device such as a CRT display, LCD, or organic EL display, or a printing device such as a printer.

A touch panel may be configured from the input unit 14 and the output unit 15. In the case of configuring this touch panel, the input unit 14 is a position input device that detects and inputs an operation position such as a resistive film method or a capacitance method, and the output unit 15 is a display device. In this touch panel, a position input device is provided on the display surface of the display device, one or more input content candidates that can be input to the display device are displayed, and the user touches the display position where the input content to be input is displayed. Then, the position is detected by the position input device, and the display content displayed at the detected position is input to the soil condition evaluation device P as the operation input content of the user. In such a touch panel, since the user can easily understand the input operation intuitively, the soil condition evaluation device P that is easy for the user to handle is provided.

In the present embodiment, the temperature Ts of the field is acquired from the heat distribution image generation device M by the communication IF unit 11, and the operator measures the temperature at the field AR with a thermometer, and this measured temperature is the temperature of the field. You may input from the input part 14 as Ts. This method is particularly useful when the above-described heat distribution image generation device is attached to the tip of the rod to acquire the heat distribution image SP of the field, or when the heat distribution image SP of the field is acquired from an adjacent building or the like. It is. Therefore, in such a case, the input unit 14 corresponds to another example of the field temperature acquisition unit that acquires the temperature Ts of the field.

The storage unit 13 is a circuit that is connected to the control processing unit 12 and stores various predetermined programs and various predetermined data under the control of the control processing unit 12. Examples of the various predetermined programs include a control program for controlling the

units

11 and 13 to 15 of the soil condition evaluation apparatus P according to the functions of the units, and the heat distribution of the field acquired by the communication IF unit 11. Reduction in the soil of the field based on the field temperature processing program for obtaining the temperature Tar of the field based on the image SP and the heat distribution image SP of the field acquired by the communication IF unit 11 and the temperature Ts of the field. The amount of material for obtaining the amount MV of the material for improving the reducibility based on the evaluation value EV obtained by the soil reducibility evaluation program for obtaining the evaluation value EV representing the degree of nature A control processing program such as a processing program is included. Examples of the various predetermined data include the communication address of the heat distribution image generation device M, the heat distribution image SP of the field, the temperature conversion information for obtaining the temperature distribution Tar of the field from the heat distribution image SP of the field, From the temperature distribution information Tarp, the evaluation value conversion information for obtaining the evaluation value EV from the difference between the field temperature Tar and the field temperature Ts, the field reducibility evaluation map EVm, and the field reducibility evaluation map EVm Data necessary for evaluating the soil condition of the field such as the material amount conversion information for obtaining the material amount map MVm, the field material amount map MVm, and the like are included. The storage unit 13 includes, for example, a ROM or an EEPROM. The storage unit 13 includes a RAM serving as a working memory for the so-called control processing unit 12 that stores data generated during execution of the predetermined program. And in order to memorize | store these each said information, the memory | storage part 13 functionally has the heat distribution information memory | storage part 131, the temperature distribution information memory | storage part 132, the reducibility evaluation information memory | storage part 133, and the material amount information memory | storage part 134. A setting evaluation condition information storage unit 135 and a conversion information storage unit 136 are provided.

The heat distribution information storage unit 131 stores the heat distribution image (heat distribution image data) SP of the field. In the present embodiment, the heat distribution information storage unit 131 is synchronized with the heat distribution image SP of the field received by the communication IF unit 11 and the imaging of the heat distribution image generation unit 24 to generate the heat distribution image SP. The position Pap of the positioning result of the GPS 21 and the temperature Ts of the measurement result of the temperature measuring unit 22 obtained in association with each other are stored in association with each other.

The temperature distribution information storage unit 132 stores the temperature distribution image Tarp of the field. In the present embodiment, the temperature distribution information storage unit 132 stores the temperature distribution image Tarp of the farm field obtained based on the heat distribution image SP of the farm field by using the temperature conversion information by the farm temperature processing unit 122 described later. To do. The field temperature distribution image Tarp is stored in the temperature distribution information storage unit 132 in association with the position Pap and the field temperature Ts associated with the field heat distribution image SP used to obtain the field temperature distribution image Tarp.

The reducibility evaluation information storage unit 133 stores the reducibility evaluation map EVm of the field. In the present embodiment, the reducibility evaluation information storage unit 133 is obtained based on the field temperature Tar and the field temperature Ts by using the evaluation value conversion information by the soil reducibility evaluation unit 123 described later. A field reducibility evaluation map EVm is stored. The field reducibility evaluation map EVm is associated with the position Pap and the field temperature Ts associated with the field temperature distribution image Tarp (that is, the field heat distribution image SP) used to obtain the map. And stored in the reducibility evaluation information storage unit 133.

The material amount information storage unit 134 stores the material amount map MVm of the field. In the present embodiment, the material amount information storage unit 134 uses the material amount conversion information by the material amount processing unit 124 to be described later, so that the material amount map of the field obtained based on the field reducibility evaluation map EVm. Store MVm. This field material amount map MVm is stored in the material amount information storage unit 134 in association with the position Pap associated with the reducibility evaluation map EVm (that is, the heat distribution image SP of the field) used when obtaining this field map. Remembered.

The setting evaluation condition information storage unit 135 stores the setting evaluation condition. In the present embodiment, as described above, the setting evaluation condition information storage unit 135 stores, as one of the setting evaluation conditions, that the field temperature Ts of the field is equal to or higher than the predetermined temperature Th. Is clear or sunny and the time is from 9 o'clock to 15 o'clock, is stored as another setting evaluation condition.

The conversion information storage unit 136 stores the temperature conversion information, evaluation value conversion information, and material amount conversion information. These temperature conversion information, evaluation value conversion information, and material amount conversion information are generated by measuring a plurality of samples in advance and statistically processing the measurement results, and are stored in the conversion information storage unit 136. In this embodiment, the evaluation value conversion information and the material amount conversion information are collected in one table in a table format and stored in the conversion information storage unit 136.

The evaluation material conversion information table CT for registering the evaluation value conversion information and the material amount conversion information is, for example, as shown in FIG. 3, a difference ΔT for registering a difference between the field temperature Tar and the field temperature Ts. A field 311, an evaluation value field 312 for registering an evaluation value EV corresponding to the difference ΔT registered in the difference ΔT field 311, and a material amount corresponding to the evaluation value field (in other words, the difference ΔT field 311 And a material amount field 313 for registering MV, which has a record corresponding to the number of types of evaluation values EV.

The evaluation value EV is multistage and includes an evaluation indicating whether or not a reduction disorder has occurred. More specifically, in this embodiment, the evaluation value EV has four stages of “no reduction”, “weak reduction”, “medium reduction”, and “strong reduction”, and the “no reduction” "Represents" no occurrence of reduction failure ", and" strong reduction "represents" occurrence of reduction failure ".

Therefore, in this embodiment, the evaluation material conversion information table CT shown in FIG. 3 has four records. In the first record, when the difference ΔT obtained by subtracting the field temperature Ts from the field temperature Tar by each field 311 to 313 is 0 or less (ΔT ≦ 0), It is registered that the evaluation value EV is not reducing and the material amount MV is 0 [kg / 10a] (0 kg per 10 ares). In the second record, the difference ΔT obtained by subtracting the field temperature Ts from the field temperature Tar from each field 311 to 313 is greater than 0 and less than Th1 (0 < ΔT ≦ Th1), the evaluation value EV is weakly reducing, and the material amount MV is registered as V1 [kg / 10a] (V1 kg per 10 ares). The third record includes a case where a difference ΔT obtained by subtracting the field temperature Ts from the field temperature Tar from each field 311 to 313 is greater than Th1 and less than Th2 (Th1 < ΔT ≦ Th2), the evaluation value EV is moderately reducible, and the material amount MV is registered as V2 [kg / 10a] (V2 kg per 10 ares). In the fourth record, when the difference ΔT obtained by subtracting the field temperature Ts from the field temperature Tar is greater than Th2 in each field 311 to 313 (Th2 <ΔT) In addition, it is registered that the evaluation value EV is strongly reducing and the material amount MV is V3 [kg / 10a] (V1 kg per 10 ares).

In one example, the Th1 is + 1.5 ° C., + 2 ° C., + 2.5 ° C. or the like, and the Th2 is + 3.5 ° C., + 4 ° C., + 4.5 ° C., or the like, and Th1 <Th2. In one example, the V1 is 10 [kg / 10a], the V2 is 20 [kg / 10a], and the V3 is 30 [kg / 10a], and V1 <V2 <V3. is there.

The control processing unit 12 controls the

units

11 and 13 to 15 of the soil condition evaluation device P according to the functions of the components, obtains an evaluation value EV and a material amount MV, and controls the soil condition evaluation device P overall. Is. The control processing unit 12 includes, for example, a CPU (Central Processing Unit) and its peripheral circuits. By executing the control processing program in the control processing unit 12, a control unit 121, a field temperature processing unit 122, a soil reducibility evaluation unit 123, and a material amount processing unit 124 are functionally configured.

The control part 121 controls each part 11, 13-15 of the said soil condition evaluation apparatus P according to the function of the said each part. When the communication IF unit 11 receives the heat distribution image SP or the like of the farm field from the heat distribution image generation device M through the communication signal, the control unit 121 receives the heat distribution image SP, the position Pap, and the temperature Ts of the farm housed in the communication signal. Are associated with each other and stored in the heat distribution information storage unit 131.

The field temperature processing unit 122 calculates the temperature Tar of the field based on the heat distribution image SP of the field received by the communication IF unit 11. More specifically, the field temperature processing unit 122 uses the temperature conversion information stored in the conversion information storage unit 136 to set each pixel in the heat distribution image SP of the field to a temperature corresponding to the pixel value. By converting, an image (temperature distribution image) Tarp representing the temperature distribution of the field is obtained. Accordingly, each pixel of the temperature distribution image Tarp of the field represents the temperature Tar of the field at the pixel position. The field temperature processing unit 122 stores the obtained temperature distribution image Tarp in the temperature distribution information storage unit 132 in association with the position Pap and the temperature Ts associated with the heat distribution image SP of the field.

The soil state evaluation unit 123 calculates the evaluation value of the field based on the difference between the temperature distribution image Tarp of the field obtained by the field temperature processing unit 122 and the temperature Ts of the field received by the communication IF unit 11. EV is obtained in multiple stages. More specifically, the soil condition evaluation unit 123 uses the evaluation value conversion information stored in the conversion information storage unit 136 to evaluate the difference between the field temperature distribution image Tarp and the field temperature Ts. Convert to value EV. Although the conversion to the evaluation value EV may be executed for each pixel, in the present embodiment, the soil state evaluation unit 123 converts the temperature distribution image Tarp of the field into a sub-region having a predetermined predetermined width. Dividing into SAR, obtaining a representative value of the temperature Tar for each of these sub-regions SAR, obtaining a difference between the obtained representative value of the temperature Tar and the field temperature Ts, and calculating the difference from the evaluation value conversion information. And converted into an evaluation value EV. In one heat distribution image SP, that is, one temperature distribution image Tarp corresponding thereto, the field temperature Ts is considered to be the same (in each sub-region SAR) throughout the field. As a result, a reduction evaluation map EVm to which an evaluation value EV (SAR) is assigned for each sub-region SAR is created. The sub-region SAR has an arbitrary shape (for example, a triangle, a quadrangle, a hexagon, etc.) and an arbitrary width (0.5 are, 1 are, 2 are, etc.) as long as the field AR can be divided without gaps. Although it is good, in one example, it is a square of 5 m or 10 m on a side. The representative value may be, for example, an average value of all pixels in the sub-region SAR, or may be a median value of the sub-region SAR, for example. The soil reducibility evaluation unit 123 associates the obtained reducibility evaluation map EVm with the position Pap associated with the temperature distribution image Tarp of the field and the field temperature Ts of the field, and the reducibility evaluation information storage unit. 133 to store.

Here, in the present embodiment, the soil reducibility evaluation unit 123, when the evaluation condition received by the communication IF unit 11 or the input unit 14 satisfies the setting evaluation condition stored in the setting evaluation condition information storage unit 135, The evaluation value EV obtained as described above is obtained as the final evaluation value EV. More specifically, the soil reducibility evaluation unit 123 determines the evaluation value EV as the final evaluation value EV when the field temperature Ts received by the communication IF unit 11 is equal to or higher than the predetermined temperature Th. To do. Furthermore, in this embodiment, the soil reducibility evaluation unit 123 performs the evaluation when the heat distribution image SP of the field is clear or sunny and is captured at any time between 9:00 and 15:00. The value EV is set as the final evaluation value EV.

The material amount processing unit 124 obtains the amount MV of material for improving the reducibility based on the evaluation value EV obtained by the soil reducibility evaluation unit 123. More specifically, the material amount processing unit 124 uses each of the material amount conversion information stored in the conversion information storage unit 136 to use each sub-unit of the reducibility evaluation map EVm stored in the reducibility evaluation information storage unit 133. Each evaluation value EV (SAR) associated with the area SAR is converted into a material amount MV (SAR). As a result, a material amount map MVm to which a material amount MV (SAR) is assigned for each sub-region SAR is created. Then, the material quantity processing unit 124 stores the obtained material quantity map MVm in the material quantity information storage unit 134 in association with the position Pap associated with the field reducibility evaluation map EVm.

Next, the operation of the soil state evaluation system S (heat distribution image generation device M, soil state evaluation device P) in the present embodiment will be described. FIG. 4 is a flowchart showing the operation of the soil condition evaluation apparatus of the soil condition evaluation system. FIG. 5 is a schematic diagram showing a temperature distribution image of an agricultural field as an example. FIG. 6 is a diagram showing an evaluation value map obtained based on the temperature distribution image of the field schematically shown in FIG. FIG. 7 is a diagram showing a material amount map obtained based on the evaluation value map shown in FIG.

In such a soil condition evaluation system S, first, when the power distribution is turned on, the heat distribution image generation device M and the soil condition evaluation device P execute necessary initialization and start operation thereof. In the soil condition evaluation apparatus P, by executing the control processing program, the control processing unit 12 is functionally configured with a control unit 121, a field temperature processing unit 122, a soil reducibility evaluation unit 123, and a material amount processing unit 124. The

The heat distribution image generation device M flies in accordance with the control of the control unit 23 by guided flight or autonomous flight, images the field AR to be evaluated from above, measures the position by the GPS 21 in synchronization with the image capturing, and performs the temperature measurement by the temperature measurement unit 22. Measure temperature. Then, the heat distribution image generation device M is generated by the control unit 23 by imaging the GPS 21, the temperature measurement unit 22, and the heat distribution image generation unit 24 obtained by the positioning result Pap, the measurement result temperature Ts, and the measurement result. The transmitted heat distribution image SP (not shown) is transmitted from the communication IF unit 26 to the soil condition evaluation device P as a communication signal.

In FIG. 4, the soil condition evaluation apparatus P obtains the positioning result Pap (position Pap), the measurement result temperature Ts (field temperature Ts), and the field heat distribution image SP from the heat distribution image generation apparatus M by the communication IF unit 11. When received and acquired, the acquired position Pap, field temperature Ts, and field heat distribution image SP are associated with each other and stored in the heat distribution information storage unit 131 of the storage unit 13 (S11). Evaluation conditions are acquired (S12). For example, after the operation of the soil condition evaluation device P, the evaluation condition may be received by the input unit 14, stored in the storage unit 13, and the evaluation condition stored in the storage unit 13 may be acquired. Further, for example, when the position Pap, the field temperature Ts, and the field heat distribution image SP are acquired from the heat distribution image generation device M, the evaluation condition may be acquired by receiving the input of the evaluation condition by the input unit 14. good. This evaluation condition input operation may be executed at predetermined time intervals (for example, every 30 minutes, every hour, every two hours, or the like). In the present embodiment, weather and time are input from the input unit 14 as one of the evaluation conditions. On the other hand, the temperature Ts of the field is received as another one of the evaluation conditions by the communication IF unit 11 as described above.

Next, the soil state evaluation apparatus P obtains the temperature distribution image Tarp of the field by obtaining the temperature Tar of the field based on the heat distribution image SP of the field by the field temperature processing unit 122 of the control processing unit 12 and stores it. (S13). More specifically, the field temperature processing unit 122 uses the temperature conversion information stored in the conversion information storage unit 136 to calculate each pixel in the heat distribution image SP of the field acquired in step S11 as a pixel value. An image (temperature distribution image) Tarp representing the temperature distribution of the field is obtained by converting the temperature into a temperature corresponding to. Then, the field temperature processing unit 122 stores the obtained temperature distribution image Tarp in the temperature distribution information storage unit 132 in association with the position Pap and the temperature Ts acquired in step S11.

Next, the soil condition evaluation apparatus P obtains an evaluation value EV by the soil reducibility evaluation unit 123 of the control processing unit 12 (S14). More specifically, the soil reducibility evaluation unit 123 determines the difference between the field temperature distribution image Tarp obtained by the field temperature processing unit 122 in step S13 and the field temperature Ts acquired in step S11. Based on this, the field evaluation value EV is determined in multiple stages. More specifically, the soil reducibility evaluation unit 123 determines, for each of the plurality of sub-regions SAR into which the field AR is divided, the representative value of the temperature Tar of the sub-region SAR from the field temperature distribution image Tarp obtained in step S13. The difference ΔT between the obtained representative value temperature Tar and the field temperature Ts is obtained, and this difference ΔT is evaluated using the evaluation material conversion information table CT stored in the conversion information storage unit 136. Convert to EV (SAR). Thereby, the reducibility evaluation map EVm is created.

Next, the soil condition evaluation apparatus P determines whether the received evaluation condition satisfies the set evaluation condition stored in the set evaluation condition information storage unit 135 by the soil reducibility evaluation unit 123 (S15). As a result of this determination, when the evaluation condition satisfies the set evaluation condition (Yes), the soil reducibility evaluation unit 123 sets the evaluation value EV obtained in the process S14 as the finally obtained evaluation value EV, When the evaluation condition does not satisfy the set evaluation condition (No), the soil reducibility evaluation unit 123 does not use the evaluation value EV obtained in the processing S14 as an error as the evaluation value EV finally obtained. More specifically, the soil reducibility evaluation unit 123 determines whether or not the field temperature Ts acquired in the process S11 is equal to or higher than the predetermined temperature Th, and the weather received in the process S12 is clear or sunny. Then, it is determined whether or not the time received in the process S12 is from 9:00 to 15:00. As a result of this determination, the soil reducibility evaluation unit 123 determines that the field temperature Ts acquired in the process S11 is equal to or higher than the predetermined temperature Th, and the weather received in the process S12 is clear or sunny, and the When the time received in process S12 is from 9:00 to 15:00, it is determined that the evaluation condition satisfies the set evaluation condition (Yes), and the soil reducibility evaluation unit 123 determines the evaluation value obtained in process S14. Let EV be the evaluation value EV finally obtained. On the other hand, as a result of the determination, the soil reducibility evaluation unit 123 indicates that the field temperature Ts acquired in the process S11 is not equal to or higher than the predetermined temperature Th, or the weather received in the process S12 is not clear or sunny, or When the time received in the process S12 is not from 9:00 to 15:00 (that is, the field temperature Ts acquired in the process S11 is equal to or higher than the predetermined temperature Th, the weather received in the process S12 is clear or When the evaluation condition does not satisfy the set evaluation condition (if no one of the clear sky and the time received in the process S12 is from 9:00 to 15:00) ) And the soil reducibility evaluation unit 123 does not use the evaluation value EV obtained in the process S14 as the evaluation value EV finally obtained as an error.

Next, the soil condition evaluation apparatus P uses the soil reducibility evaluation unit 123 to calculate the evaluation value EV (in this embodiment, the reducibility evaluation map EVm) obtained in the process S14, the determination result of the process S15, and the process S11. The obtained position Pap and the temperature Ts are associated with each other and stored in the reducing ability evaluation information storage unit 133 (S16).

Next, the soil condition evaluation apparatus P uses the material amount processing unit 124 of the control processing unit 12 to increase the reducibility based on the evaluation value EV obtained by the soil reducibility evaluation unit 123. MV is obtained and stored (S17). More specifically, the material amount processing unit 124 uses the material amount conversion information stored in the conversion information storage unit 136 to associate with each sub-region SAR of the reducibility evaluation map EVm obtained in step S14. Each evaluation value EV (SAR) thus obtained is converted into a material amount MV (SAR). Then, the material amount processing unit 124 stores the obtained material amount map MVm in the material amount information storage unit 134 in association with the position Pap acquired in step S11.

And the soil condition evaluation apparatus P outputs the evaluation value EV and its material amount MV for the field AR to be evaluated from the output unit 15 by the control processing unit 12 (S18), and ends the process. More specifically, the control processing unit 12 outputs, from the output unit 15, the reducibility evaluation map EVm obtained in the process S14 and the material amount map MVm in the process S16 according to the determination result of the process S15. More specifically, for example, the control processing unit 12 determines the evaluation value EV (this embodiment) in which the determination result of the process S15 is finally obtained from the evaluation value EV (in this embodiment, the reducibility evaluation map EVm) obtained in the process S14. In the embodiment, in the case of the reducibility evaluation map EVm), the reducibility evaluation map EVm obtained in step S14 and the material amount map MVm are output from the output unit 15 in step S16, and the control processing unit 12 determines the determination result in step S15. Is an error, the setting evaluation condition is not satisfied and an error is output from the output unit 15. When the determination result of the process S15 is an error, the control processing unit 12 outputs the fact that the setting evaluation condition is not satisfied and the error is output from the output unit 15, and the reducibility obtained in the process S14 as reference information. The material amount map MVm may be output from the output unit 15 in the evaluation map EVm and processing S16.

For example, by converting the pixel value of each pixel from the heat distribution image SP in the evaluation target field AR using the temperature conversion information, the temperature distribution image Tarp shown in FIG. In the process S14, for each sub-region SAR of the temperature distribution image Tarp shown in FIG. 5, a representative value of the temperature Tar of the sub-region SAR is obtained, and the representative value of the temperature Tar of the sub-region SAR is obtained as an evaluation material conversion information table. By converting using CT, a reduction evaluation map EVm shown in FIG. 6 is obtained. Then, in the process S17, for each sub-region SAR of the reducing evaluation map EVm shown in FIG. 6, the evaluation value EV (SAR) of the sub-region SAR is converted using the evaluation material conversion information table CT. A material amount map MVm shown in FIG.

And the soil condition evaluation apparatus P receives the communication signal which accommodated the positioning result Pap (position Pap), the temperature Ts (temperature Ts of field) of the measurement result, and the heat distribution image SP of the field from the heat distribution image generation apparatus M. Each time the process is performed, the above-described processes S11 to S18 are executed. When a plurality of reducibility evaluation maps EVm (Par) corresponding to each position Pap are connected by such an operation, the plurality of reducibility evaluation maps EVm (Par) are connected to the plurality of reducibility evaluation maps EVm. (Par) Linked based on each position Pap corresponding to each. For example, for each of the plurality of reducibility evaluation maps EVm (Par), the position on the heat distribution image SP corresponding to the position Pap from the imaging direction (optical axis direction) of the heat distribution image generation unit 24, that is, the reducibility evaluation concerned. A position on the map EVm (Par) is obtained, and the reduction evaluation is performed from the angle of view of the heat distribution image generation unit 24, the position Pap, and the position on the reduction evaluation map EVm (Par) corresponding to the position Pap. The position of the peripheral part of the map EVm (Par) is obtained. Based on the respective positions of the respective peripheral portions of the respective reducibility evaluation maps EVm (Par) obtained in this way, the mutual positional relationship of the respective reducibility evaluation maps EVm (Par) is obtained. EVm (Par) is connected. Even when a plurality of material amount maps MVm (Par) corresponding to each position Pap are connected, a plurality of material amount maps MVm ( Par) is connected based on each position Pap corresponding to each of the plurality of material amount maps MVm (Par).

As described above, the soil state evaluation system S, the soil state evaluation device P, and the soil state evaluation method and the soil state evaluation program implemented therein are the field heat distribution image SP and the field temperature Ts. Therefore, it is not necessary to sample a sample from the soil, and the heat distribution image SP is obtained by, for example, a heat distribution image generation device or the like. Since a relatively wide range can be obtained at a time, the degree of reducibility can be evaluated more efficiently.

From the above-described reduction failure process, the greater the difference between the field temperature Tar and the field temperature Ts, the greater the degree of reduction. The soil state evaluation system S, the soil state evaluation device P, the soil state evaluation method, and the soil state evaluation program increase the evaluation value EV based on the difference ΔT between the field temperature Tar and the field temperature Ts. Since it calculates | requires in a stage, the appropriate evaluation value EV can be calculated | required.

The above-described soil condition evaluation system S, soil condition evaluation apparatus P, soil condition evaluation method, and soil condition evaluation program include an evaluation in which the evaluation value EV indicates whether or not a reduction disorder has occurred. It can be obtained, and it can be known whether or not a reduction disorder has occurred.

From the above-mentioned reduction disorder process, the degree of reduction can be suitably evaluated when the temperature is relatively high or when the weather is fine. In the soil condition evaluation system S, the soil condition evaluation device P, the soil condition evaluation method, and the soil condition evaluation program, the soil reducibility evaluation unit 123 stores the received evaluation conditions in the setting evaluation condition information storage unit 135. When the evaluation condition is satisfied, the final evaluation value EV is obtained, so that a more appropriate evaluation value EV can be obtained.

One of the set evaluation conditions is that the soil state evaluation system S, the soil state evaluation device P, the soil state evaluation method, and the soil state evaluation program indicate that the acquired temperature Ts of the field is equal to or higher than a predetermined temperature Th. Therefore, a more appropriate evaluation value can be obtained in view of the above-described reduction failure process.

The soil condition evaluation system S, the soil condition evaluation apparatus P, the soil condition evaluation method, and the soil condition evaluation program are one of the set evaluation conditions that the weather is fine or clear and the time is from 9:00 to 15:00. Therefore, a more appropriate evaluation value can be obtained in view of the above-described reduction failure process.

Since the soil state evaluation system S, the soil state evaluation device P, the soil state evaluation method, and the soil state evaluation program obtain the evaluation values for each of the plurality of sub-regions, the two-dimensional spatial resolution can be improved. The degree of reducibility generated can be evaluated.

When the degree of reducibility has deteriorated, materials for improving the reducibility, such as lime nitrogen, are supplied to the field AR in preparation for the growth of the next crop. Conventionally, when a reduction failure occurs, the degree of reduction is unknown, and therefore, the material is supplied to the entire field AR in a uniform amount. Since the soil state evaluation system S, the soil state evaluation device P, the soil state evaluation method, and the soil state evaluation program obtain the amount MV of the material based on the evaluation value EV, the material can be supplied to the field AR in a more appropriate amount. . As a result, the amount MV of the material can be reduced compared to the case where the material is supplied to the field AR in a uniform amount, so that the cost can be reduced and the cost effectiveness can be improved. In particular, when the evaluation value EV (SAR) is obtained for each of the plurality of sub-regions SAR, the amount of material MV (SAR) is obtained for each of the plurality of sub-regions SAR. Accordingly, the material can be supplied to the individual sub-regions SAR, so that the material can be supplied to the field AR more efficiently.

In the above-described embodiment, the material amount is obtained regardless of whether or not the setting evaluation condition is satisfied. However, the material amount may be obtained only when the setting evaluation condition is satisfied. That is, when the set evaluation condition is not satisfied, the execution of the process S17 for obtaining and storing the material amount is skipped.

In the above-described embodiment, the soil condition evaluation apparatus P acquires the heat distribution image SP from the heat distribution image generation apparatus M by wireless communication. However, the heat distribution image generation apparatus M and the soil condition evaluation apparatus P are cables. The soil condition evaluation device P may acquire the heat distribution image SP from the heat distribution image generation device M via the cable. In this case, the heat distribution image acquisition unit is an interface unit that receives the heat distribution image SP in the field to be evaluated from the heat distribution image generation device M by wire. Moreover, the soil state evaluation apparatus P may acquire the heat distribution image SP from a server apparatus that stores and manages the heat distribution image SP via a communication line. In this case, the heat distribution image acquisition unit is a communication interface unit that receives the heat distribution image SP via a communication line from the server device that stores and manages the heat distribution image SP in the field AR to be evaluated. Moreover, the soil condition evaluation apparatus P may acquire the heat distribution image SP from a recording medium on which the heat distribution image SP is recorded. In this case, the heat distribution image acquisition unit reads the heat distribution image SP from a recording medium on which the heat distribution image SP in the field AR to be evaluated is recorded, for example, a storage device (for example, an HDD drive device or a CD). -ROM drive device). Alternatively, when the recording medium is a USB memory or the like, the heat distribution image acquisition unit is a USB (Universal Serial Bus) interface unit.

This specification discloses various modes of technology as described above, and the main technologies are summarized below.

The soil condition evaluation apparatus according to one aspect is acquired by a heat distribution image acquisition unit that acquires a heat distribution image in a field to be evaluated, a field temperature acquisition unit that acquires a temperature of the field, and the heat distribution image acquisition unit. And a soil reducibility evaluation unit that obtains an evaluation value representing a degree of reducibility in the soil of the field based on the heat distribution image of the field and the field temperature acquired by the field temperature acquisition unit. Preferably, in the above-described soil condition evaluation apparatus, the heat distribution image acquisition unit captures infrared rays radiated from the field to be evaluated, and generates heat distribution images (thermograms) representing the heat distribution as a diagram. It is a distribution image generation device (thermograph, infrared camera). Preferably, in the above-described soil condition evaluation device, the heat distribution image acquisition unit is an interface unit that receives, from the heat distribution image generation device, a heat distribution image in a field to be evaluated by wire. Preferably, in the above-described soil condition evaluation device, the heat distribution image acquisition unit wirelessly receives a heat distribution image in an evaluation target field from the heat distribution image generation device (for example, a communication card). It is. Preferably, in the above-described soil condition evaluation device, the heat distribution image acquisition unit receives the heat distribution image via a communication line from a server device that stores and manages the heat distribution image in the field to be evaluated. Part. Preferably, in the above-described soil condition evaluation apparatus, the heat distribution image acquisition unit reads the heat distribution image from a recording medium on which the heat distribution image in the evaluation target field is recorded (for example, a storage device corresponding to the storage medium (for example, HDD drive device, CD-ROM drive device, etc.).

So-called reduction failure is considered to occur by the following process. That is, for example, when hydrogen sulfide or an organic acid is generated in soil in a field such as a paddy field, for example, root elongation and activity in a crop such as rice are inhibited. As a result, the growth of the crop is suppressed and the moisture of the crop is sucked up. Ability weakens. For this reason, for example, when the temperature is high in a relatively hot season in summer, for example, moisture is not transferred to the entire crop, and the amount of transpiration from the pores decreases. As a result, the temperature of the crop itself (corresponding to the body temperature in the case of the person) cannot be lowered sufficiently, such as human heat stroke, resulting in poor growth or withering. If such a reduction hindrance occurs, the yield of the crop will decrease and the quality will deteriorate.

The present inventor has found that the presence or absence of reduction damage in the field correlates with the temperature of the crop in view of such a reduction damage process.

The soil condition evaluation apparatus obtains an evaluation value indicating the degree of reducibility in the soil of the field based on the heat distribution image of the field and the temperature of the field, so there is no need to sample a sample from the soil, Since the distribution image can be obtained in a relatively wide range at a time by, for example, a heat distribution image generation device or the like, the degree of reduction can be evaluated more efficiently.

In another aspect, in the above-described soil condition evaluation apparatus, the soil condition evaluation apparatus further includes a field temperature processing unit that calculates a temperature of the field based on the heat distribution image acquired by the heat distribution image acquisition unit, and the soil reducibility evaluation The unit obtains the evaluation value in multiple stages based on a difference between the field temperature obtained by the field temperature processing unit and the field temperature obtained by the field temperature obtaining unit.

From the above-described reduction failure process, the greater the difference between the field temperature and the field temperature, the greater the degree of reduction. Since the said soil condition evaluation apparatus calculates | requires the said evaluation value in multiple steps based on the difference of the said field temperature and the said field temperature, it can calculate | require an appropriate evaluation value.

In another aspect, in the above-described soil condition evaluation apparatus, the evaluation value includes an evaluation indicating whether or not a reduction disorder has occurred.

In such a soil condition evaluation apparatus, since the evaluation value includes an evaluation indicating whether or not a reduction disorder has occurred, it is possible to determine whether or not a reduction disorder has occurred and to know whether or not a reduction disorder has occurred.

In another aspect, in the above-described soil condition evaluation apparatus, an evaluation condition storage unit that stores a set evaluation condition when the evaluation value is obtained by the soil reducibility evaluation unit, and an evaluation condition reception that receives the evaluation condition from the outside The soil reducibility evaluation unit obtains the evaluation value when the evaluation condition received by the evaluation condition reception unit satisfies the set evaluation condition stored in the evaluation condition storage unit.

From the above-mentioned reduction disorder process, the degree of reduction can be suitably evaluated when the temperature is relatively high or when the weather is fine. The soil condition evaluation apparatus obtains an evaluation value when the evaluation condition received by the evaluation condition receiving unit by the soil reducibility evaluation unit satisfies the set evaluation condition stored in the evaluation condition storage unit. The value can be determined.

In another aspect, in the above-described soil condition evaluation apparatus, the evaluation condition storage unit is configured so that the temperature of the field acquired by the field temperature acquisition unit is equal to or higher than a predetermined temperature. The evaluation condition accepting unit includes the field temperature obtaining unit.

Such a soil condition evaluation apparatus can obtain a more appropriate evaluation value in view of the above-described reduction disorder process.

In another aspect, in the above-described soil condition evaluation apparatus, the evaluation condition storage unit stores, as one of the set evaluation conditions, that the weather is fine or clear and the time is from 9:00 to 15:00. The evaluation condition receiving unit is an input unit that receives data input from the outside.

In another aspect, in the above-described soil condition evaluation apparatus, the field to be evaluated includes a plurality of sub-regions divided, and the soil reducibility evaluation unit performs the evaluation on each of the plurality of sub-regions. Find each value.

Such a soil condition evaluation apparatus obtains an evaluation value for each of a plurality of sub-regions, so that the two-dimensional spatial resolution can be improved, and the degree of reducibility generated at various places in the field can be evaluated.

In another aspect, in the above-described soil condition evaluation apparatus, a material amount processing unit for obtaining an amount of material for improving the reducibility based on the evaluation value obtained by the soil reducibility evaluation unit Prepare.

When the degree of reducibility has deteriorated, materials for improving the reducibility, such as lime nitrogen, are supplied to the field in preparation for the growth of the next crop. In the past, when a reduction failure occurs, the degree of reduction is unknown, so that a uniform amount of material has been supplied to the entire field. Since the said soil condition evaluation apparatus calculates | requires the quantity of material based on an evaluation value, it can supply a material to a field with a more suitable quantity. As a result, the amount of material can be reduced compared to the case where the material is supplied to the field in a uniform amount, so that the cost can be reduced and the cost effectiveness can be improved. In particular, when the evaluation values are obtained for each of the plurality of sub-regions, the amount of material is obtained for each of the plurality of sub-regions. Since it can be supplied, materials can be supplied to the field more efficiently.

The soil state evaluation method according to another aspect includes a heat distribution image acquisition step of acquiring a heat distribution image in a field to be evaluated, a field temperature acquisition step of acquiring the temperature of the field, and the heat distribution image acquisition step. A soil reducibility evaluation step of obtaining an evaluation value representing a degree of reducibility in the soil of the field based on the acquired heat distribution image of the field and the temperature of the field acquired in the field temperature acquisition step. Prepare.

The soil condition evaluation program according to another aspect includes, in a computer, a heat distribution image acquisition step of acquiring a heat distribution image in an evaluation target field, a field temperature acquisition step of acquiring the temperature of the field, and the heat distribution image. Soil reducibility evaluation for obtaining an evaluation value representing the degree of reducibility in the soil of the field based on the heat distribution image of the field acquired in the acquisition step and the field temperature acquired in the field temperature acquisition step This is a program for executing a process.

Such a soil condition evaluation method and a soil condition evaluation program obtain an evaluation value indicating the degree of reducibility in the soil of the field based on the heat distribution image of the field and the temperature of the field. Since there is no need to sample and a heat distribution image can be obtained at a relatively wide range at a time by, for example, a heat distribution image generation device or the like, the degree of reduction can be evaluated more efficiently.

This application is based on Japanese Patent Application No. 2016-94866 filed on May 10, 2016, the contents of which are included in this application.

In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

According to the present invention, a soil condition evaluation apparatus, a soil condition evaluation method, and a soil condition evaluation program can be provided.

Claims

A heat distribution image acquisition unit for acquiring a heat distribution image in a field to be evaluated;
A field temperature acquisition unit for acquiring the temperature of the field;
Based on the heat distribution image of the field acquired by the heat distribution image acquisition unit and the temperature of the field acquired by the field temperature acquisition unit, an evaluation value representing the degree of reducibility in the soil of the field is obtained. A soil reducibility evaluation unit;
Soil condition evaluation device.
A field temperature processing unit for determining the temperature of the field based on the heat distribution image acquired by the heat distribution image acquisition unit;
The soil reducibility evaluation unit obtains the evaluation value in multiple stages based on a difference between the field temperature obtained by the field temperature processing unit and the field temperature obtained by the field air temperature obtaining unit. ,
The soil condition evaluation apparatus according to claim 1.
The evaluation value includes an evaluation indicating whether or not a reduction disorder has occurred,
The soil condition evaluation apparatus according to claim 1 or 2.
An evaluation condition storage unit for storing a set evaluation condition when the evaluation value is obtained by the soil reducibility evaluation unit;
An evaluation condition reception unit that receives evaluation conditions from outside;
The soil reducibility evaluation unit obtains the evaluation value when the evaluation condition received by the evaluation condition reception unit satisfies a set evaluation condition stored in the evaluation condition storage unit,
The soil condition evaluation apparatus according to any one of claims 1 to 3.
The evaluation condition storage unit stores, as one of the setting evaluation conditions, that the field temperature acquired by the field temperature acquisition unit is equal to or higher than a predetermined temperature.
The evaluation condition reception unit includes the farm temperature acquisition unit,
The soil condition evaluation apparatus according to claim 4 quoting claim 2 or claim 3.
The evaluation condition storage unit stores, as one of the set evaluation conditions, that the weather is fine or sunny and the time is from 9:00 to 15:00,
The evaluation condition receiving unit is an input unit that receives data input from the outside.
The soil condition evaluation apparatus according to claim 4 or claim 5 that cites claim 2 or claim 3.
The field to be evaluated includes a plurality of divided sub-regions,
The soil reducibility evaluation unit obtains the evaluation value for each of the plurality of sub-regions,
The soil condition evaluation apparatus according to any one of claims 1 to 6.
Based on the evaluation value obtained by the soil reducibility evaluation unit, further comprising a material amount processing unit for obtaining the amount of material for improving the reducibility,
The soil condition evaluation apparatus according to any one of claims 1 to 7.
A heat distribution image acquisition step of acquiring a heat distribution image in the field to be evaluated;
A field temperature acquisition step of acquiring the temperature of the field;
Based on the heat distribution image of the field acquired in the heat distribution image acquisition step and the field temperature acquired in the field temperature acquisition step, an evaluation value representing the degree of reducibility in the soil of the field is obtained. A soil reducibility evaluation step,
Soil condition evaluation method.
On the computer,
A heat distribution image acquisition step of acquiring a heat distribution image in the field to be evaluated;
A field temperature acquisition step of acquiring the temperature of the field;
Based on the heat distribution image of the field acquired in the heat distribution image acquisition step and the field temperature acquired in the field temperature acquisition step, an evaluation value representing the degree of reducibility in the soil of the field is obtained. A soil condition evaluation program for executing a soil reducibility evaluation process.