Air blowing system, air blowing method, and program

Abstract

The present invention provides a ventilation system, ventilation method, and program that can prevent fruit tree diseases by providing suitable ventilation for preventing fruit tree diseases. [Solution] The ventilation system 1 includes a rain sensor 102 placed in the field to detect rainfall in the field, a temperature sensor 104 placed in the field to measure the temperature of the field, a ventilation fan 105 that blows air toward the fruit trees planted in the field, and a control unit 101 that, when the rain sensor 102 detects that the rain has stopped after detecting rainfall, determines the operating time for the ventilation fan 105 based on the temperature measured by the temperature sensor 104, and controls the ventilation fan 105 to operate for the operating time.

Description

Technical Field

[0001] The present invention relates to a ventilation system, a ventilation method, and a program.

Background Art

[0002] Patent Document 1 describes an anti-frost fan system including a plurality of anti-frost fans and a control management device for managing the operations of the plurality of anti-frost fans. The control management device has a plurality of operation control modes including an anti-frost mode in which the anti-frost fans are used for anti-frost and a power generation mode in which the anti-frost fans are used as generators.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the anti-frost fan system described in Patent Document 1, it is possible to prevent frost from falling on the field in the early spring and damaging the new buds of crops. However, there is a problem in that it is not possible to perform ventilation suitable for preventing diseases other than frost, and the diseases of crops cannot be sufficiently prevented.

[0005] The present invention has been made in view of such problems, and an object thereof is to provide a ventilation system, a ventilation method, and a program capable of performing ventilation suitable for preventing diseases of fruit trees and preventing diseases of fruit trees.

Means for Solving the Problems

[0006] To achieve the above object, one aspect of the ventilation system according to the present invention is a rainfall sensor disposed in a field and detecting rainfall to the field, A temperature sensor is placed in the field to measure the temperature of the field, A fan that blows air towards the fruit trees planted in the aforementioned field, The system includes a control unit that, when the rainfall sensor detects that the rain has stopped after detecting rainfall, determines the operating time for the blower fan based on the temperature measured by the temperature sensor, and controls the blower fan to operate for the specified operating time. It is characterized by the following:

[0007] The control unit may set the operation time to the first operation time if the ambient temperature measured by the temperature sensor is equal to or greater than the first temperature and less than the second temperature.

[0008] The control unit may set the operation time to a second operation time that is longer than the first operation time if the ambient temperature measured by the temperature sensor is less than the first temperature or is greater than or equal to the second temperature.

[0009] The system further includes a wetness sensor for detecting the wetness and dryness of the fruit tree, The control unit may continue the operation of the blower fan if the wetness sensor detects that the fruit tree is wet when the operating time has elapsed.

[0010] The control unit may stop the operation of the blower fan if the wetness sensor detects that the fruit tree is dry during the operation time.

[0011] To achieve the above objective, one form of the air blowing method according to the present invention is: The ventilation system Detect rainfall in the field, The temperature of the field was measured, If rainfall is detected and then it is detected that the rain has stopped, the operating time for the fan that blows air towards the fruit trees planted in the field is determined based on the measured temperature, and the fan is controlled to operate for the specified operating time. It is characterized by the following:

[0012] To achieve the above object, one aspect of the program according to the present invention is to cause a computer to detect rainfall in the field, measure the temperature of the field, when it is detected that the rain has stopped after detecting rainfall, determine the operating time for operating a blower fan that blows air toward the fruit trees planted in the field based on the measured temperature, and control the blower fan to operate for the operating time. It is characterized by the above.

Effect of the Invention

[0013] According to the present invention, it is possible to provide a blowing system, a blowing method, and a program that can perform blowing suitable for preventing diseases of fruit trees and prevent diseases of fruit trees.

Brief Description of the Drawings

[0014] [Figure 1] A block diagram showing the configuration of the blowing system according to the embodiment. [Figure 2] A schematic diagram showing the blowing system according to the embodiment arranged in the field. [Figure 3] A block diagram showing the configuration of the control unit of the embodiment. [Figure 4] A flowchart of the blowing process executed by the blowing system according to the embodiment. [Figure 5] Another example flowchart of the blowing process executed by the blowing system according to the embodiment.

Embodiment for Carrying Out the Invention

[0015] The blowing system 1 according to the embodiment will be described with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals. The blowing system 1 according to the embodiment is a blowing system that blows air toward the fruit trees planted in the field to adjust the temperature or humidity around the fruit trees.

[0016] FIG. 1 is a block diagram showing the configuration of a ventilation system 1 according to an embodiment. As shown in FIG. 1, the ventilation system 1 includes a control unit 101, a rainfall sensor 102, a wetness sensor 103, a temperature sensor 104, a ventilation fan 105, and a drive unit 106.

[0017] The control unit 101 is a processing device that controls the entire ventilation system 1. The control unit 101 may include a CPU (Central Processing Unit), but is not limited thereto. The control unit 101 is connected to the rainfall sensor 102, the wetness sensor 103, the temperature sensor 104, the ventilation fan 105, and the drive unit 106 via, for example, a bus.

[0018] The rainfall sensor 102 is a sensor that is arranged in the farmland A and detects whether it is raining in the farmland A. The rainfall sensor 102 can be arranged at any number of arbitrary positions capable of detecting rainfall in the farmland A.

[0019] The wetness sensor 103 is a sensor that is arranged in the farmland A and detects whether the fruit tree B planted in the farmland A is wet. The wetness sensor 103 can be arranged at any number of arbitrary positions capable of detecting the wetness of the leaves, branches, or trunks of the fruit tree B. The wetness sensor 103 may be a leaf wetness sensor that detects the wetness of the sensor surface imitating the leaf surface.

[0020] The temperature sensor 104 is a sensor that is arranged in the farmland A and detects the air temperature of the farmland A. The temperature sensor 104 can be arranged at any number of arbitrary positions capable of detecting the air temperature of the farmland A. Note that the temperature sensor 104 may detect not only the air temperature but also the ground temperature.

[0021] The ventilation fan 105 is a ventilation device that is arranged in the farmland A and operates by being controlled by the control unit 101 to blow air into the farmland A. The ventilation fan 105 may be able to change the pitch angle, horizontal angle, and ventilation intensity. The ventilation fan 105 is arranged, for example, at a height of 6 m or more and 10 m or less from the ground surface, and can be arranged, for example, at a position 8 m from the ground, but is not limited thereto. The ventilation fan 105 may function as an anti-frost fan.

[0022] The blower fan 105, when operating, blows air toward fruit tree B, thereby adjusting the temperature and humidity around fruit tree B.

[0023] The drive unit 106 is controlled by the control unit 101 and drives the blower fan 105 to blow air toward the fruit tree B.

[0024] Figure 2 is a schematic diagram showing the ventilation system 1 installed in field A. As shown in Figure 2, a rain sensor 102 is placed in a position in field A where rainfall can be detected. Multiple wetness sensors 103 and temperature sensors 104 are placed around the fruit trees B planted in field A. A ventilation fan 105 is placed in a position where air can be blown towards the fruit trees B.

[0025] Figure 3 is a block diagram showing the configuration of the control unit 101. As shown in Figure 3, the control unit 101 comprises a detection unit 111, a determination unit 112, and a fan control unit 113.

[0026] The detection unit 111 is connected to the rainfall sensor 102, the wetness sensor 103, and the temperature sensor 104. The detection unit 111 acquires signals from each of the rainfall sensor 102, the wetness sensor 103, and the temperature sensor 104 that indicate the surrounding environment, and transmits the acquired signals to the determination unit 112. For example, the detection unit 111 acquires a signal indicating rainfall from the rainfall sensor 102 and transmits to the determination unit 112 that the rainfall sensor 102 has detected rainfall.

[0027] The determination unit 112 determines whether to operate the blower fan 105 based on the signal indicating the environment around the sensor transmitted from the detection unit 111.

[0028] The determination unit 112 stops the blower fan 105 if the rain sensor 102 detects rainfall.

[0029] The determination unit 112 decides to operate the blower fan 105 when the rain sensor 102 switches from detecting rain to not detecting rain, that is, when the rain sensor 102 detects that the rain has stopped.

[0030] The determination unit 112 determines the operating time of the blower fan 105 based on the temperature detected by the temperature sensor 104. For example, if the temperature is 12°C (first temperature) or higher and less than 25°C (second temperature), the determination unit 112 decides to operate the blower fan 105 for 9 hours (first operating time) from when the rain stops. If the temperature is less than 12°C or 25°C or higher, the determination unit 112 decides to operate the blower fan 105 for 15 hours (second operating time) from when the rain stops. The operating time of the blower fan 105 and the temperature used to determine the operating time are examples only and are not limited to these.

[0031] The determination unit 112 may shorten or extend the operating time of the blower fan 105 based on whether the wetness sensor 103 detects wetness or dryness. If the determination unit 112 detects that the wetness sensor 103 is dry, it may stop the blower fan 105 even if the operating time for the blower fan 105 has not yet ended. If the determination unit 112 detects that the wetness sensor 103 is wet, it may extend the operating time of the blower fan 105 even if the operating time for the blower fan 105 has already ended, until it detects that the wetness sensor 103 is dry.

[0032] The fan control unit 113 obtains the decision made by the determination unit 112 to operate or stop the blower fan 105, and controls the drive unit 106 to operate or stop the blower fan 105 based on the decision of the determination unit 112. The fan control unit 113 may also control the drive unit 106 to change the elevation angle, horizontal angle, and airflow intensity of the blower fan 105.

[0033] Figure 4 is a flowchart of the air blowing process performed by the air blowing system 1 according to the embodiment. The air blowing process will be explained with reference to the flowchart in Figure 4.

[0034] When the air blowing process is started, the determination unit 112 of the control unit 101 acquires a signal from the rain sensor 102 via the detection unit 111 and determines whether the rain sensor 102 has detected rainfall (step S101). If the rain sensor 102 has not detected rainfall (step S101: NO), step S101 is repeated.

[0035] If the rain sensor 102 detects rainfall (step S101: YES), the determination unit 112 receives a signal from the rain sensor 102 via the detection unit 111 and determines whether the rain sensor 102 has switched to a state where it is not detecting rainfall, that is, whether the detection of rainfall has ended (step S102). If the rain sensor 102 continues to detect rainfall (step S102: NO), step S102 is repeated.

[0036] If the rainfall sensor 102 switches to a state where it is not detecting rainfall (step S102: YES), the determination unit 112 acquires a signal from the temperature sensor 104 via the detection unit 111 and determines whether the temperature is 12°C or higher and less than 25°C (step S103).

[0037] If the temperature is 12°C or higher and less than 25°C (step S103: YES), the determination unit 112 decides to operate the blower fan 105 for 9 hours (step S104), and proceeds to step S106.

[0038] If the temperature is below 12°C or above 25°C (step S103: NO), the determination unit 112 decides to operate the blower fan 105 for 15 hours (step S105), and proceeds to step S106.

[0039] Once the determination unit 112 determines the time for operating the blower fan 105 (steps S104, S105), the fan control unit 113 controls the drive unit 106 to operate the blower fan 105 (step S106).

[0040] When the blower fan 105 is activated, the fan control unit 113 determines whether the operation time determined by the determination unit 112 has elapsed (step S107). If it is determined that the time has not elapsed (step S107: NO), step S107 is repeated.

[0041] If it is determined that the time has elapsed (step S107: YES), the fan control unit 113 controls the drive unit 106 to stop the blower fan 105 (step S108), and terminates the blowing process.

[0042] Figure 5 is a flowchart of another example of the air blowing process performed by the air blowing system 1 according to the embodiment. Another example of the air blowing process will be described with reference to the flowchart in Figure 5.

[0043] The process from the start of processing to step S206 is the same as the flowchart in Figure 4 from the start of processing to step S106, so the explanation is omitted.

[0044] When the fan control unit 113 operates the blower fan 105 (step S206), the determination unit 112 acquires a signal from the wetness sensor 103 via the detection unit 111 and determines whether the wetness sensor 103 has detected that it is dry (step S207).

[0045] If it is determined that the surface is dry (step S207: YES), the fan control unit 113 controls the drive unit 106 to stop the blower fan 105 (step S208), and the blowing process ends.

[0046] If the determination unit 112 determines that it has not detected that the surface is dry, i.e., that it has detected that the surface is wet (step S207: NO), the determination unit 112 extends the operating time of the blower fan 105 (step S209) and returns to step S207.

[0047] By having the above configuration and performing air blowing, the air blowing system according to this embodiment can prevent fruit tree diseases by blowing air suitable for preventing fruit tree (plant) diseases.

[0048] For example, apples, pears, plums, cherries, and roses (plants belonging to the Rosaceae family) can be affected by black spot disease. It is believed that black spot disease is caused by filamentous fungi contained in the soil, dead leaves, or damaged parts of plants, which then attach to the plants via splashed rainwater. To prevent black spot disease in plants, it is effective to minimize the amount of time the plants are wet.

[0049] The temperature at which black spot disease is most likely to occur is 20°C, and it is said to be more likely to occur in the range of 12°C to 25°C. In the temperature range of 12°C to 25°C, it is said that the incidence of black spot disease increases if the leaf surface is wet for about 9 hours. The ventilation system according to the embodiment can effectively prevent the occurrence of black spot disease on fruit trees by providing ventilation for the necessary amount of time to prevent the occurrence of black spot disease in the temperature range in which black spot disease is likely to occur.

[0050] (modified version) Although embodiments have been described above, these embodiments are merely examples, and the scope of the present invention is not limited thereto. In other words, the embodiments of the present invention can be applied in various ways, and all embodiments fall within the scope of the present invention.

[0051] The determination unit 112 is defined as deciding to operate the blower fan 105 for 9 hours from the time the rain stops if the temperature is 12°C or higher and less than 25°C, but it is not limited to this. The determination unit 112 may change the temperature range or operating time depending on the type of fruit tree B, the surrounding environment, or other conditions. The temperature range or operating time may also be configured to be changeable by user input.

[0052] The determination unit 112 decides to operate the blower fan 105 when the rain sensor 102 detects that the rain has stopped, but it is not limited to this. The blower fan 105 may also be operated when the wetness sensor 103 detects that it is wet, and the blower fan 105 may be stopped when the wetness sensor 103 detects that it is dry. In this case, the determination unit 112 does not need to determine the operating time of the blower fan 105 based on the temperature detected by the temperature sensor 104.

[0053] Furthermore, while it is possible to provide a blower system equipped with a pre-configured set of features for realizing the functions according to the present invention, it is also possible to make an existing system function as a blower system according to the present invention by applying a program. That is, by applying a program to realize each functional configuration of the blower system 1 exemplified in the above embodiment so that it can be executed by a CPU or the like that controls an existing system, it can be made to function as a blower system according to the present invention. In addition, the blowing method according to the present invention can be implemented using a blower system.

[0054] Furthermore, the method of applying such a program is arbitrary. The program can be applied by storing it on a computer-readable storage medium such as a flexible disk, CD (Compact Disc)-ROM, DVD (Digital Versatile Disc)-ROM, or memory card. In addition, the program can be superimposed on a carrier wave and applied via a communication medium such as the Internet. For example, the program may be posted and distributed on a bulletin board system (BBS) on a communication network. The program can then be launched and executed under the control of the OS, just like any other application program, to perform the above-mentioned processing.

[0055] Although preferred embodiments of the present invention have been described above, the present invention is not limited to these specific embodiments, and the present invention includes the invention described in the claims and its equivalents. [Explanation of Symbols]

[0056] 1...Air blowing system, 101...Control unit, 102...Rainfall sensor, 103...Wetness sensor, 104...Temperature sensor, 105...Blowing fan, 106...Drive unit, 111...Detection unit, 112...Determination unit, 113...Fan control unit, A...Field, B...Fruit trees.

Claims

1. A rainfall sensor is placed in the field to detect rainfall in the field, A temperature sensor is placed in the field to measure the temperature of the field, A fan that blows air towards the fruit trees planted in the aforementioned field, The system includes a control unit that, when the rainfall sensor detects that the rain has stopped after detecting rainfall, determines the operating time for the blower fan based on the temperature measured by the temperature sensor, and controls the blower fan to operate for the specified operating time. Ventilation system.

2. The control unit sets the operation time to the first operation time if the ambient temperature measured by the temperature sensor is equal to or greater than the first temperature and less than the second temperature. The air blowing system according to claim 1.

3. The control unit, if the temperature measured by the temperature sensor is less than the first temperature or is greater than or equal to the second temperature, sets the operation time to a second operation time which is longer than the first operation time. The air blowing system according to claim 2.

4. The system further includes a wetness sensor for detecting the wetness and dryness of the fruit tree, The control unit, if the wetness sensor detects that the fruit tree is wet when the operating time has elapsed, continues the operation of the blower fan. The air blowing system according to claim 1.

5. The control unit stops the operation of the blower fan if the wetness sensor detects that the fruit tree is dry during the operation time. The air blowing system according to claim 4.

6. The ventilation system Detect rainfall in the field, The temperature of the field was measured, If rainfall is detected and then it is detected that the rain has stopped, the operating time for the fan that blows air towards the fruit trees planted in the field is determined based on the measured temperature, and the fan is controlled to operate for the specified operating time. Air blowing method.

7. On the computer, To detect rainfall in the field, The temperature of the aforementioned field was measured. If rainfall is detected and then it is detected that the rain has stopped, the system determines the operating time for a fan that blows air towards the fruit trees planted in the field based on the measured temperature, and controls the fan to operate for the specified operating time. program.

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