JP6885794B2 - Field management system, field management method, program and recording medium - Google Patents

Description

The present invention relates to a field management system that controls the temperature of water existing in the field.

The temperature of the water given to the crops in the field has a great influence on the quality of the crops. For example, it is known that the quality of a certain variety of rice deteriorates significantly when the water temperature of a paddy field exceeds 28 ° C. On the other hand, Patent Document 1 below discloses a system that measures the water temperature of a paddy field and controls the water supply to the paddy field so that the water temperature becomes an appropriate value based on the measurement result.

Patent No. 2929257

Since the amount of water in paddy fields is generally large, the water temperature cannot be lowered immediately even if water is supplied to the paddy fields, especially when the water temperature rises rapidly. Therefore, for example, even if the water supply is controlled so that the water is supplied when the water temperature exceeds 28 ° C., the rice is exposed to a high temperature for a long time, and the quality is likely to deteriorate.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a field management system capable of appropriately controlling the temperature of water existing in a field.

As a result of intensive research to achieve the above object, the present inventors can appropriately control the water temperature by notifying the field manager based on the rate of increase in the temperature of the water in the field. I found. The present inventors have completed the present invention based on such findings.

That is, the present invention includes, for example, the subjects described in the following sections.
Item 1.
A water temperature measuring device that measures the temperature of water existing in the field,
A field management system including an information processing device that processes temperature data measured by the water temperature measuring device.
The information processing device includes an ascending speed calculation unit that calculates the ascending speed of the temperature.
A field management system including a notification unit that notifies the manager of the field when the ascending speed is equal to or higher than a predetermined reference value.
Item 2.
Item 2. The field management according to Item 1, wherein the notification unit performs the notification when the temperature is equal to or higher than the first threshold value and the rate of increase in the temperature is equal to or higher than the predetermined reference value. system.
Item 3.
A water supply control device for controlling the supply of water to the field is further provided.
The information processing device is further characterized by further including a water supply instruction unit that instructs the water supply control device to supply water to the field when the temperature is equal to or higher than the second threshold value higher than the first threshold value. Item 2. The field management system according to Item 2.
Item 4.
A field management program for operating a computer as each part of the information processing apparatus according to any one of Items 1 to 3.
Item 5.
A computer-readable recording medium on which the field management program according to item 4 is recorded.
Item 6.
A water temperature measurement step that measures the temperature of the water present in the field,
The rising speed calculation step for calculating the rising speed of the temperature and
A notification step for notifying the manager of the field when the ascending speed is equal to or higher than a predetermined reference value, and
A field management method characterized by comprising.

According to the present invention, it is possible to provide a field management system capable of appropriately controlling the temperature of water existing in the field.

It is a block diagram which shows the whole structure of the field management system which concerns on one Embodiment of this invention. It is a graph for demonstrating the definition of the temperature rise rate. It is a graph which shows an example of the change of the water temperature of a paddy field. It is a graph which shows another example of the change of the water temperature of a paddy field. It is a graph which shows still another example of the change of the water temperature of a paddy field. It is a flowchart which shows an example of the procedure of the temperature control method which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the following embodiments.

(Overall configuration of field management system)
FIG. 1 is a block diagram showing an overall configuration of a field management system 1 according to an embodiment of the present invention. The field management system 1 mainly includes a water temperature measuring device 2, an information processing device 3, a mobile terminal 4, a water supply control device 5, and a floodgate 6.

The water temperature measuring device 2 measures the temperature of water existing in the field, and is composed of, for example, a water temperature gauge. In the present embodiment, it is assumed that the field is a paddy field, and the water temperature measuring device 2 is provided so that at least the sensor portion for detecting the temperature is located below the water surface.

The information processing device 3 is connected to the water temperature measuring device 2 by wire or wirelessly, and processes the temperature data measured by the water temperature measuring device 2. The information processing device 3 can be configured by, for example, a general-purpose personal computer or a dedicated microcomputer. When the information processing device 3 is a general-purpose personal computer, the information processing device 3 is installed in, for example, a building near a paddy field. When the information processing device 3 is a small microcomputer, the information processing device 3 may be housed together with the water temperature measuring device 2 in a protective case installed in the paddy field. The detailed configuration of the information processing device 3 will be described later.

The mobile terminal 4 is a terminal device such as a smartphone or a mobile phone carried by the manager of the field (paddy field). At least communication from the information processing device 3 to the mobile terminal 4 is possible via the Internet N, and the information processing device 3 can transmit a message such as an e-mail to the mobile terminal 4.

The water supply control device 5 controls the opening and closing of the water gate 6 provided between the paddy field and the irrigation canal. The water supply control device 5 is installed near the water gate 6, for example, and can communicate with the information processing device 3 by wire or wirelessly. As will be described later, when the water supply control device 5 receives the signal of the water supply instruction from the information processing device 3, the water supply control device 5 controls to open the water gate 6.

(Configuration of information processing device)
The information processing device 3 includes a CPU (not shown), a memory (not shown), an auxiliary storage device 30, and the like as a hardware configuration, and the CPU reads various programs into the memory and executes them. Execute arithmetic processing. When the information processing device 3 is composed of a general-purpose personal computer, a display device such as a liquid crystal display (not shown) and an input device such as a keyboard or touch panel (not shown) are connected to the information processing device 3. May be done. Further, the auxiliary storage device 30 can be configured by, for example, a hard disk drive (HDD) or a solid state drive (SSD). The auxiliary storage device 30 may be built in the information processing device 3 or may be a device separate from the information processing device 3.

The information processing device 3 has a water temperature data receiving unit 31, a rising speed calculation unit 32, a notification unit 33, and a water supply instruction unit 34 as functional blocks. These functional blocks are realized by the CPU of the information processing device 3 executing the field management program according to the present embodiment. The field management program according to the present embodiment may be recorded on a non-temporary computer-readable recording medium such as a CD-ROM, and the field management program can be read by the information processing device 3 by reading the recording medium. It is stored in the auxiliary storage device 30. Alternatively, the program code of the field management program may be downloaded to the information processing device 3 via the Internet N.

The water temperature data receiving unit 31 is a functional block that receives temperature data (hereinafter, referred to as water temperature data) measured by the water temperature measuring device 2. The water temperature data receiving unit 31 may be configured to constantly receive water temperature data from the water temperature measuring device 2, or may be configured to receive water temperature data at predetermined time intervals (for example, every minute). .. The water temperature data receiving unit 31 records the received water temperature data in the auxiliary storage device 30 as the water temperature history H1 at any time. Further, the water temperature data receiving unit 31 inputs the temperature T at the time of receiving the instruction to the notification unit 33 or the water supply instruction unit 34, respectively, in response to the instruction from the notification unit 33 or the water supply instruction unit 34.

In addition to the water temperature history H1, the auxiliary storage device 30 stores a reference value R1, a first threshold value T1, and a second threshold value T2. The reference value R1 is data for comparison with the ascending speed calculated by the ascending speed calculation unit 32 described later, and the first threshold value T1 and the second threshold value T2 are compared with the temperature T measured by the water temperature measuring device 2. It is the data for. In the present embodiment, the reference value R1 is set to 4.0 (° C./hour), and the first threshold value T1 and the second threshold value T2 are set to 20 (° C.) and 28 (° C.), respectively.

The rising speed calculation unit 32 is a functional block that calculates the rising speed of the temperature T received by the water temperature data receiving unit 31. The rate of increase means the value of temperature increase per minute time in a certain period. As shown in FIG. 2, the ascending speed at time t theoretically corresponds to the slope of the tangent line L2 of the temperature change curve L1 at time t, but may be a value close to the slope of the tangent line L2.

The specific mode for calculating the ascending speed is not particularly limited. In the present embodiment, increase speed calculation unit 32 refers to the temperature history H1, the temperature T _C of the operational _time, and acquires the temperature T _P of a predetermined time before the calculation time. Assuming that the predetermined time is Δt, the ascending speed R is calculated by the following equation 1.
_{R = (T C -T P)} / △ t ... ( Equation 1)
In the present embodiment, Δt is, for example, 0.1 (hours), but it can be appropriately changed depending on the measurement accuracy of the water temperature measuring device 2 and the data reception interval by the water temperature data receiving unit 31. In the present embodiment, the ascending speed calculation unit 32 calculates the ascending speed R in response to the instruction from the notification unit 33, and inputs the calculated ascending speed R to the notification unit 33.

The notification unit 33 is a functional block that notifies the manager of the field when the temperature T is equal to or higher than the first threshold value T1 and the temperature rise rate R is equal to or higher than a predetermined reference value R1. In the present embodiment, the notification unit 33 acquires the temperature T from the water temperature data receiving unit 31 at predetermined time intervals (for example, every 30 minutes), and compares the temperature T with the first threshold value T1. The first threshold value T1 is set to a value lower than the temperature that adversely affects the growth of rice by a predetermined temperature, and is, for example, 20 (° C.) in the present embodiment. When the temperature T is equal to or higher than the first threshold value T1, the notification unit 33 instructs the ascending speed calculation unit 32 to calculate the ascending speed R of the temperature T, and receives the ascending speed R from the ascending speed calculation unit 32. Further, the notification unit 33 compares the ascending speed R input from the ascending speed calculation unit 32 with the reference value R1 stored in the auxiliary storage device 30. The reference value R1 is, for example, 4.0 (° C./hour) in this embodiment.

When the ascending speed R is equal to or higher than the reference value R1, the notification unit 33 notifies the administrator by transmitting an e-mail via the Internet N. The specific content of the e-mail is not particularly limited as long as it indicates that the water temperature of the paddy field is at least the first threshold value T1 (20 ° C. or more) at present and the rate of increase in the water temperature is high.

FIG. 3 is a graph showing an example of a change in water temperature in a paddy field. As described above, the rising speed calculation unit 32 calculates the rising speed of the water temperature every 30 minutes (8:00, 8:30, 9:00, 9:30, ...). The rising speed R at 9:00 exceeds the reference value R1, but the water temperature at that time is less than 20 ° C., which is the first threshold value T1, so the notification unit 33 does not notify the administrator. After that, the water temperature becomes 20 ° C. or higher, but since the rising speed at 9:30, 10:00 and 10:30 is less than the reference value R1, the notification unit 33 does not notify the administrator. After that, since the ascending speed at 11:00 is equal to or higher than the reference value R1 and the water temperature at that time is 20 ° C. or higher, the notification unit 33 sends an e-mail to the mobile terminal 4 to the administrator. Notify. By checking the e-mail, the administrator can recognize that the water temperature may become high enough to adversely affect the growth of rice in a short time, and if necessary, open the floodgate 6 to the paddy field. Water can be supplied and measures can be taken to lower the water temperature. As a result, it is possible to prevent the rice from being exposed to a high temperature state and appropriately control the temperature of the water. In the example shown in FIG. 3, the water temperature has not reached 28 ° C., which adversely affects the growth of rice, because the manager supplies water to the paddy field in response to the notification from the notification unit 33.

It is not essential for the manager to supply water to the paddy field even when the notification is received from the notification unit 33. For example, water supply to paddy fields may be restricted due to water shortages due to the dry season or the sharing of irrigation canals with neighboring farmers. Moreover, even if the water temperature rises rapidly, it may be expected that the subsequent weather will be cloudy or rainy. In such a case, the manager can decide not to supply water to the paddy field by comprehensively considering the risk of the rice being exposed to high temperature and other circumstances.

Further, when the rising speed R is equal to or higher than the reference value R1, the administrator may be notified regardless of the water temperature. For example, in FIG. 3, the water temperature at 9:00 is less than the first threshold value T1, but the notification unit 33 may perform notification according to the rise speed R exceeding the reference value R1.

However, when the water temperature is too low, even if the rising rate R is large, it is very unlikely that the water temperature will be high enough to adversely affect the growth of rice. Therefore, when the rising speed R is large as in the present embodiment, the temperature that may reach the water temperature that adversely affects the growth of rice in a short time is set as the first threshold value T1 and the administrator is notified. As a condition to be performed, it is preferable to add a condition that the water temperature is equal to or higher than the first threshold value T1. As a result, it is possible to prevent substantially unnecessary notification from being performed in a situation where the water temperature is low.

See FIG. 1 again. The water supply instruction unit 34 shown in FIG. 1 is a functional block that instructs the water supply control device 5 to supply water to the paddy field when the temperature T is higher than the first threshold value T1 and is equal to or higher than the second threshold value T2. The water supply instruction unit 34 compares the temperature T measured by the water temperature measuring device 2 at predetermined time intervals (for example, every 30 minutes) with the second threshold value T2 stored in the auxiliary storage device 30. The second threshold value T2 is set to a temperature that adversely affects the growth of rice, and is 28 (° C.) in this embodiment. As a result of comparison, when the temperature T is 28 (° C.) or higher, the water supply instruction unit 34 transmits a signal instructing the water supply control device 5 to open the water gate 6. As a result, when the water temperature reaches a temperature that adversely affects the growth of rice, water is automatically supplied to the paddy field, and the water temperature can be lowered.

As described above, the paddy field manager can decide not to supply water to the paddy field even when the notification is received from the notification unit 33. Further, even if the notification unit 33 sends an e-mail to the mobile terminal 4, the communication state is poor and the mobile terminal 4 cannot receive the e-mail. Even if the mobile terminal 4 receives the e-mail, the administrator confirms the e-mail. There is also the possibility that the manager is staying far from the paddy field and cannot supply water to the paddy field. In such a case, even if the water temperature reaches a temperature that adversely affects the growth of the rice, in the present embodiment, the water supply instruction unit 34 automatically supplies water to the paddy field, so that the rice is in a high temperature state for a long time. You can avoid the disadvantages of being exposed to.

FIG. 4 is a graph showing another example of a change in water temperature in a paddy field. The change in water temperature in this graph is the same as the graph shown in FIG. 3 until 11:00. In FIG. 4, although the notification unit 33 notified the administrator at 11:00, the water temperature was not supplied to the paddy field, so that the water temperature continued to rise. After that, at 11:30, the temperature T was compared with the second threshold value T2 (28 ° C.) by the water supply indicator 34, and as a result, the temperature T was 28 ° C. or higher, so that water was supplied to the paddy field. Instructions are given. As a result, the water temperature is lowered, and the time when the rice is exposed to a high temperature of 28 ° C. or higher can be suppressed.

FIG. 5 is a graph showing still another example of changes in water temperature in paddy fields. In this graph, the water temperature continues to rise gradually from 8:00 to 11:30, but since the temperature rise rate R is less than the reference value R1, the notification unit 33 notifies the administrator. You won't be told. Then, at 11:30, since the temperature T is 28 ° C. or higher, the water supply instruction unit 34 gives an instruction to supply water to the paddy field. At this time, the administrator may be notified together with the water supply instruction.

(flowchart)
FIG. 6 is a flowchart showing an example of the procedure of the field management method according to the present embodiment. The field management method according to the present embodiment is carried out by the field management system 1 shown in FIG. Hereinafter, description will be made with reference to FIGS. 1 and 6.

In step S1, the water temperature data receiving unit 31 receives the water temperature data from the water temperature measuring device 2 at all times or at predetermined time intervals (for example, every minute).

In step S2, the ascending speed calculation unit 32, the notification unit 33, and the water supply instruction unit 34 perform calculation processing at predetermined time intervals (for example, every 30 minutes). Specifically, in step S3, the notification unit 33 acquires the temperature T from the water temperature data receiving unit 31, and compares the temperature T with the first threshold value T1. As a result, when the temperature T is less than the first threshold value T1 (NO in step S3), step S2 ends and the process proceeds to step S9. On the other hand, when the temperature T is equal to or higher than the first threshold value T1 (YES in step S3), the process proceeds to step S4.

In step S4, the notification unit 33 receives the ascending speed R from the ascending speed calculation unit 32, and compares the ascending speed R with the reference value R1. As a result, when the ascending speed R is less than the reference value R1 (NO in step S4), the process proceeds to step S5, and when the ascending speed R is equal to or more than the reference value R1 (YES in step S4), the process proceeds to step S8. .. In both steps S5 and S8, the water supply instruction unit 34 acquires the temperature T from the water temperature data reception unit 31 and compares the temperature T with the second threshold value T2.

In step S5, when the temperature T is equal to or higher than the second threshold value T2 (YES in step S5), the water supply instruction unit 34 instructs the water supply control device 5 to supply water (step S6), and the notification unit 33 informs the administrator. Notify (step S7). Similarly, in step S8, when the temperature T is equal to or higher than the second threshold value T2 (YES in step S8), the processes of steps S6 and S7 are performed. At this time, step S6 and step S7 may be performed at the same time, or step S7 may be performed before step S6.

On the other hand, in step S5, when the temperature T is less than the second threshold value T2 (NO in step S5), step S2 ends and the process proceeds to step S9. Further, in Tep S8, when the temperature T is less than the second threshold value T2 (NO in step S8), the notification unit 33 notifies the administrator (step S7).

To summarize step S2 and the processing result thereof, when the temperature T is less than the first threshold value T1, neither the water supply instruction nor the notification to the manager is performed. When the temperature T is equal to or greater than the first threshold value T1 and less than the second threshold value T2, if the temperature rise rate R is equal to or greater than the reference value R1, only the administrator is notified. When the temperature T is equal to or higher than the second threshold value T2, both the water supply instruction and the notification to the manager are performed regardless of the temperature rise rate R.

When the series of processes of steps S2 to S8 is completed and the process proceeds to step S9, after a predetermined time (for example, 30 minutes) has elapsed, the process returns to step S2 again and the series of processes is repeated. The predetermined time in step S9, that is, the interval at which the arithmetic processing in step S2 is performed is not particularly limited. However, if the predetermined time is set too long, there is a high possibility that the water temperature will suddenly reach a high temperature and adversely affect the growth of rice after shifting to step S9 without notifying the administrator. On the contrary, if the predetermined time is set too short, the administrator may be notified very frequently. The processing of steps S2 to S8 may not be performed during the time zone from evening to dawn, but may be performed only during the time zone when the temperature rises.

(Additional notes)
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

In the above embodiment, the notification by the notification unit 33 is performed by e-mail, but the specific mode of notification to the administrator is not particularly limited. For example, instead of sending an e-mail, it is possible to adopt a form in which an incoming call is received by automatic voice in the mobile terminal 4, or a form in which a speaker is installed in a paddy field or an administrator's place and a voice is transmitted from the speaker.

Further, in the above embodiment, if the temperature T is equal to or higher than the second threshold value T2, the water supply instruction unit 34 shown in FIG. 1 gives an instruction to supply water to the paddy field, but this control is not essential to the present invention. That is, the water supply instruction unit 34 and the water supply control device 5 may be omitted.

Further, in the above embodiment, the reference value R1 is set to 4.0 (° C./hour), and the first threshold value T1 and the second threshold value T2 are set to 20 (° C.) and 28 (° C.), respectively. , These specific numerical values are appropriately set according to the growth status of rice and rice varieties managed in the paddy field, and can be changed by the user (for example, the administrator) of the information processing apparatus 3. Is.

Further, in the above embodiment, the information processing device 3 is provided in a building near the paddy field or in a protective case installed in the paddy field, but the place where the information processing device 3 is provided is not particularly limited, for example. The information processing device 3 may be provided on the cloud. In this case, the information processing device 3 is connected to the water temperature measuring device 2 and the water supply control device 5 via a communication network such as the Internet.

The field management system according to the present invention can be applied not only to paddy fields but also to any fields in which water for growing crops exists.

1 Field management system 2 Water temperature measuring device 3 Information processing device 4 Mobile terminal 5 Water supply control device 6 Water gate 30 Auxiliary storage device 31 Water temperature data receiving unit 32 Rising speed calculation unit 33 Notification unit 34 Water supply instruction unit R Rising speed R1 Reference value T Temperature T1 first threshold T2 second threshold

Claims (5)

A water temperature measuring device that measures the temperature of water existing in the field,
A field management system including an information processing device that processes temperature data measured by the water temperature measuring device.
The information processing device includes an ascending speed calculation unit that calculates the ascending speed of the temperature.
When the temperature is equal to or higher than the first threshold value and the rising speed is equal to or higher than a predetermined reference value, a notification unit that notifies the manager of the field and a notification unit.
A field management system characterized by being equipped with. A water supply control device for controlling the supply of water to the field is further provided.
The information processing device is further characterized by further including a water supply instruction unit that instructs the water supply control device to supply water to the field when the temperature is equal to or higher than the second threshold value higher than the first threshold value. The field management system according to claim 1. A field management program for operating a computer as each part of the information processing apparatus according to claim 1 or 2. A computer-readable recording medium on which the field management program according to claim 3 is recorded. A water temperature measurement step that measures the temperature of the water present in the field,
The rising speed calculation step for calculating the rising speed of the temperature, and
A notification step for notifying the manager of the field when the temperature is equal to or higher than the first threshold value and the rising speed is equal to or higher than a predetermined reference value.
A field management method characterized by comprising.

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