JP2004065265A - Hydroponic culture system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a culture-supporting system and a hydroponic culture system, which systems enable even a quite general culturist to cultivate various plants in an optimum state and a culturist having much experience/knowledge make the best use thereof and have learning function comprising accumulating historical data and making the best use of the data. <P>SOLUTION: This system comprises cultivating plants by automatically controlling culture circumstances, a fertilizer concentration, and the like, wherein the hydroponic culture system has a culture-support center set at a distant place from the culturist and monitoring cultivation methods and cultivation results and advising to the culturist through a network and the culturist himself can change the given cultivation programs of the designed fertilizer concentration and an irrigation amount of each cultivated plant to cultivation methods adopted by himself based on variety, growth area, planting date, cultural knowledge of the culturist to, adopt the cultivation methods, and the like. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a cultivation support system that supports cultivation of growers who do not necessarily have rich plant cultivation experience and a nutrient solution cultivation system that cultivates plants by supplying a nutrient solution containing fertilizer to a medium for cultivating plants. .

Conventionally, Japanese Patent Application Laid-Open No. Hei 10-191787 does not require special knowledge for cultivation, so that even a general grower can easily cultivate various plants in an optimal state. Connecting a number of plant cultivation devices and one central management device by a transmission line, the central management device transmits optimal cultivation data to each plant cultivation device, and each plant cultivation device is configured based on the received data. A plant growing system for growing is disclosed.
JP-A-10-191787

On the other hand, as a technique for managing the amount of fertilizer applied to a hydroponic system, for example, as disclosed in Japanese Patent Application Laid-Open No. 10-313714, an irrigation period is set before the start of irrigation and the amount of the liquid fertilizer stock solution to be supplied to the medium during the irrigation period. That is, the set fertilization rate is input to the input means of the control unit, and the irrigation period and the set fertilization rate are stored in the storage means of the control unit. During the period until the irrigation period expires, the liquid fertilizer measuring means measures the supply amount of the liquid fertilizer stock solution after the start of irrigation, that is, the fertilization amount, and the arithmetic means of the control unit controls the fertilizer application. The amount of fertilizer is compared with the set amount of fertilization, the supply of the liquid fertilizer diluent is continued as long as the amount of fertilization is less than the set amount of fertilization, and when the amount of fertilization reaches the set amount of fertilization, the control unit The command means is the liquid fertilizer stock solution sending means. By transmitting the command for stopping the delivery of the liquid manure stock, diluted feeder excessive fertilization protection with liquid manure stock solution having a function of automatically stopping the supply of the liquid manure diluent are known.
If the irrigation period expires before the fertilization rate has reached the set fertilization rate, the device also sets the next irrigation period to be the same as the immediately preceding irrigation period and sets the next set fertilization rate to the immediately preceding set fertilization rate and the immediately preceding fertilization rate. It has the function of automatically restarting the next irrigation as the liquid fertilizer undiluted amount added to the previously set fertilization amount with the difference from the fertilization amount, and insufficient fertilization may occur even if used for a long time There is no.
JP-A-10-313714

As described above, in the plant cultivation system according to the first conventional technique, all cultivation control data including fertilizer management data is provided from the central management device, and even a general grower can easily use various plant cultivation data. On the other hand, the authority to change the cultivation control data is concentrated on the central management device side, and the cultivation control data on the site cannot be fine-tuned at all. Detailed cultivation management cannot be performed according to the breeding situation, and the cultivation experience of the grower cannot be reflected in the plant cultivation system.

Further, the second conventional technique has a concept of keeping the total fertilization amount in a certain period constant, but if the irrigation period expires before the fertilization amount reaches the set fertilization amount, it is insufficient in the next irrigation period. Although it was possible to prevent excess fertilization by adding the amount of fertilization, it was not possible to strictly control the amount of fertilization for a certain period.
In addition, the amount of water supply is changed in accordance with the sunshine duration and humidity.
Moreover, since the set value of the amount of fertilization cannot be changed, it is not possible to perform flexible fertilization management according to the growing condition of the plant.
For this reason, although growth failure of the plant can be prevented, the fertilizer application amount and the water supply amount have not yet reached the optimal growth condition.
In addition, it is common practice to automatically change the amount of liquid supply according to solar radiation, temperature, etc., but since only the specified program is executed uniformly, the program itself cannot be rewritten. However, this cannot reflect the actual breeding situation or the knowledge and experience of the grower.

Therefore, the present invention has been created to solve the above problems, and even a general grower can easily receive various advices on cultivation from a cultivation support center and a cultivation supporter to easily obtain various plants. A cultivation support system that allows cultivators to cultivate the cultivation in an optimal state, and makes it possible for growers to use the learning function utilizing the past cultivation experience accumulated at the cultivation support center to easily make progress in cultivation technology. It is intended to provide.

In addition, the cultivation condition setting of the cultivation automatic control device can be changed easily and finely so that cultivation can be performed based on the cultivator's own experience and knowledge. The purpose of the growers is to provide a nutrient solution cultivation system that makes the most of them.

The present invention provides, as a cultivation support system, a central information processing apparatus having a farm management server, a database server, and a browsing server installed at a cultivation support center, and a contract user who has concluded a cultivation support contract with the cultivation support center. A cultivation support system in which a farm server and an information processing device installed inside and outside a farm and an information processing device installed in a cultivation supporter designated by the contract user are organically connected via a communication network. The communication network can access the farm server of the contract user from the cultivation support center between the farm management server of the cultivation support center and the farm server of the contract user. Farm management server and other contract users' farm server From a central support network constructed via a security network that cannot be accessed, and a personal support network constructed via the Internet between the browsing server and the information processing device of the contract user and the information processing device of the cultivation supporter. The farm management server is configured, via the central support network, sequentially requests the farm server of each contract user to transmit the cultivation data in the farm server, receives the transmitted cultivation data, accumulates, The processed data is stored in the database server, and the alarm data of the processed data is transmitted to the information processing device of the corresponding contract user and the cultivation supporter thereof via the personal support network, and the browsing server is transmitted. Over the processed data for each contract user and shall be allowed to browse to the cultivation supporters and the contract user.

Further, as a nutrient solution cultivation system, a medium for cultivating plants, a nutrient solution preparation device for preparing a nutrient solution satisfying nutrient solution conditions such as nutrient solution concentration and pH value, and a nutrient solution prepared in the medium are set. A nutrient solution supply device that supplies according to the set irrigation conditions, a drainage measuring device that measures drainage discharged from the culture medium, and a farm server that controls operations of the nutrient solution supply device and the nutrient solution preparation device. In the nutrient solution cultivation system having, the nutrient solution preparation device includes a first electric conductivity detection unit that detects the concentration of the nutrient solution and a first pH detection unit that detects the pH value of the nutrient solution, and the farm server includes: A central processing unit, a first storage unit that stores preset initial setting values according to the type of plant, a growing situation, and a cultivation time, and a second storage unit that stores setting values that are reset thereafter. Storage means comprising: Input means for inputting information necessary for operating the field server, and display means for displaying at least the set values stored in the second storage unit and the measured values measured by the respective detection units. Wherein the central processing means uses the set values stored in the second storage unit as control data of the various devices.

According to the invention according to claim 1, the nutrient solution preparation device includes the first electric conductivity detection unit that detects the concentration of the nutrient solution and the first pH detection unit that detects the pH value of the nutrient solution. Is a storage that includes a first storage unit that stores preset initial settings according to the type of plant, the growth status, and the cultivation time, and a second storage unit that stores the settings that have been reset thereafter. Means, and the central processing means uses the set values stored in the second storage unit as control data of the various devices, so that even a general grower can easily various plants in an optimal state. It can be cultivated, and for a grower with rich experience and knowledge, a hydroponic cultivation system that can make the most of them can be provided.

According to the invention according to claim 2, when the measured value sent from the second electric conductivity detection unit exceeds a predetermined range, the central processing means sets the concentration of the fertilizer in the drainage based on the temporary irrigation setting value. As a result, temporary irrigation was continued until the value was close to the normal value, so that poor growth due to excessive fertilizer could be prevented.

According to the invention according to claim 3, since the temporary irrigation set value stored in the second storage unit is to reduce the fertilizer concentration stepwise, the nutrient solution with the fertilizer concentration sharply reduced is used. Because it is not supplied, damage to the roots of the plant can be eliminated.

According to the invention according to claim 4, the central processing means calculates the electric conductivity set value of the nutrient solution preparing device when the measured value sent from the second electric conductivity detection unit exceeds a predetermined range. Since it has an electric conductivity set value automatic rewriting function that automatically rewrites the next irrigation condition, the fertilizer concentration of the drainage can be fed back to the fertilizer concentration adjustment of the feed solution, which is the most important of the nutrient cultivation. The fertilizer concentration, which is a cultivation condition, can be adjusted accurately and promptly, and the growth of plants can be promoted more reliably.

According to the invention according to claim 5, the central processing means calculates a difference between the air temperature detected by the air temperature detecting unit and the medium temperature detected by the medium temperature detecting unit, and performs a ventilation window opening summer mode and a ventilation window opening winter mode. Is determined and the ventilation window driving device is controlled, so that the cultivation environment can be accurately and quickly controlled.

According to the invention according to claim 6, the temperature environment of the greenhouse can be comprehensively controlled, and the cultivation of plants can be promoted.

According to the invention according to claim 7, the central processing means of the farm server is capable of switching between the display mode and the input mode, so that the setting value confirmation work and the input work can be smoothly executed in a short time.

According to the invention according to claim 8, the central processing means of the farm server can freely write set values for each item such as time, watering condition, watering amount, nutrient solution condition and temperature condition in the input mode. Since a large number of input fields are displayed, the set values can be freely entered, and the cultivation technique of the grower can be maximized.

FIG. 1 shows an image diagram of the cultivation support network, and FIG. 2 shows a detailed diagram thereof.
Hereinafter, the cultivation support system of the present invention will be described in detail with reference to these drawings.

The cultivation support system of the present invention comprises a cultivation support center, a contract user who has concluded a cultivation support contract with the cultivation support center, and a cultivation supporter designated by the contract user by himself or by introducing the cultivation support center. It comprises an information processing device installed by the support center, a farm server installed on the farm of the contract user, an information processing device installed outside the farm, and an information processing device installed on the cultivation supporter.
These information processing apparatuses are networked by a central support network drawn substantially in the center of FIG. 1 and a personal support network drawn on the left side thereof.

As shown in the box on the right side of FIG. 1, the contents of the support services provided by the cultivation support center include monitoring of drive system malfunctions such as skylights and heaters, issuing an alarm, arranging maintenance, and EC for drainage. Monitoring of cultivation environment failures such as abnormal values, alerting, arranging maintenance, guidance for prevention of drive system malfunction such as arrival of drive motor replacement, maintenance arrangement, guidance of cultivation environment failure such as insufficient remaining nutrient solution, maintenance arrangement, cultivation data There is information on information related to cultivation such as IT growth diagnosis by analysis, weather forecast, cultivation market conditions, etc., version upgrade installation of cultivation control system, cultivation consultation, etc.

With reference to FIG. 2, the configuration of the three-party information processing apparatus will be described.
The cultivation support center has a farm management server, a database server, a browsing server, and a mail server.
A contract user is provided with a farm server inside a farm such as a greenhouse, a personal computer, a mobile phone, and a portable information terminal as information processing devices outside the farm, while a cultivation supporter is provided with a personal computer as an information processing device. ing.
The contracted user's mobile phone and mobile information terminal may be operated by remote control of the farm server by identifying the caller's number and examining the operation qualification.

These information processing devices are connected via the central support network and the personal support network as described above.

Specifically, the central support network utilizes a frame relay network.
When using a dedicated line, the center needs to secure the number of lines for the number of contract users, which is inefficient. However, this frame relay network requires that the center, each contract user, and each cultivation supporter secure one line for each. It is connected and efficient.
However, it is necessary to mutually define error correction and flow control in each information processing device.

As shown in FIG. 2, the central support network connects only the farm management server and the farm server, and does not connect the information processing device of the contract user or the information processing device of the cultivation supporter.
Further, in this embodiment, the cultivation support center sequentially requests the farm server of the contract user to transmit data via the central support network.
The farm server of the contract user transmits data in the server to the farm management server in response to a request from the cultivation support center.
When receiving the data from the farm server, the farm management server stores the data in the storage device of the database server.
On the other hand, the farm management server is set not to respond to the data transmission request from the farm server.
For this reason, in this embodiment, the central support network functions as a security network.

On the other hand, the viewing server and the mail server of the cultivation support center are connected to the contracted user and the information processing device of the cultivation supporter via the personal support network described above.
This personal support network specifically uses the Internet.

The browsing server of the cultivation support center is connected to the contracted user and the information processing device of the cultivation supporter via the Internet.
However, the cultivation support center places restrictions on the data to be disclosed. That is, disclosure of access to the browsing server is limited to processed data of data transmitted by the accessing person to the cultivation support center. That is, from the viewpoint of the contract user, the cultivation data of other contract users cannot be viewed, and only the processed cultivation data of the own contract user can be viewed. The same is true for cultivation supporters. Cultivation supporters can view only the data of the contract users that they support.
As described above, the browsing server allows the cultivation supporter who is the contracted user to browse the processed data for each contracted user.
For this purpose, the center issues ID numbers and passwords to contract users and their cultivation supporters, and examines browsing qualifications.
In this way, measures are taken so that even processed data does not leak to a third party.

A farm management server is connected to a mail server provided at the cultivation support center via a database server, and information processing devices of contract users and cultivation supporters are connected via the Internet.
E-mails such as questions from contract users, answers from the cultivation support center, and cultivation supporters are exchanged via the mail server.

Various sensors described below are provided in the farm, and the outputs of these various sensors are constantly input to the farm server.
In addition, cultivation management data described later is input from the input device of the farm server.

The farm management server is used for improving the cultivation environment of crops, such as skylights, heaters, and heat-insulating and light-shielding curtains, as well as malfunctions, temperature, ground temperature, EC value of drainage, pH value, and head pressure value of the culture medium. Recognize current abnormalities in poor cultivation environment, such as abnormalities in cultivation
When an anomaly at the present time is recognized, the farm management server sends an alert to the contracted user and the cultivation supporter's personal computer via the personal support network via the mail server, that is, by e-mail via the Internet as an alert. Send.
The contract user receives this and immediately responds to the contents of the alert.
If this is not possible, consult a cultivation support center or cultivation supporter.

In addition, the cultivation support center predicts and warns not only the problem at the present time but also a trouble that may occur in the future.
This prediction is made based on historical data such as service life, maintenance date, and past failure occurrence tendency for drive system devices, and temperature, ground temperature, EC value and pH value of drainage for cultivation type devices. Simulate the growth situation when cultivation is continued at the current set value for the head pressure value of the medium, etc., predict the future form, and if an abnormality is found, the same method as the current abnormality report To notify.

In addition, the farm management server automatically procures and performs maintenance and inspection on a separate communication network, in fact the Internet, to the contractor specified by the contract user if the abnormality alert includes the procurement of equipment and maintenance. On behalf of.
Of course, this service is provided only to those who have contracted with the cultivation support center by the contract user.

The above service issues a warning based on the independent decision of the cultivation support center.
On the other hand, the following services can be provided.
The farm management server periodically requests the farm server to transmit the outputs of various sensors provided on the farm and the cultivation data relating to the cultivation conditions input by the contract user, and stores the received data in the database server.
On the other hand, e-mail exchanges of the past three cultivation support centers, cultivation supporters, and contract users, the details of executed measures, the results thereof, and the like are stored in the database server.
After a long period of at least several years, the problems that occurred, the actual measures taken to solve the problems, the cultivation results, and the like are stored and stored in the database server as a database.
The data range is cultivation data of all contract users.
As described above, the cultivation support center comprehensively accumulates past cultivation performance data of all contract users, analyzes these data, and creates a knowledge database while finding significant rules.
At this stage, in response to a request from the information processing device of the contract user, necessary data is read from the database server, and the data is analyzed to diagnose the growing condition of the crop.
This diagnosis result is transmitted to the mail server, and a reply is made to the contract user via the Internet.

In addition to the farming management server, in addition to the cultivation condition data such as temperature and soil temperature management, water supply and fertilization management entered by the contract user, management data such as cropping area, cropping amount, yield, sales amount, cultivation management cost, profit, etc. Request to send, accumulate the received data in the database server, combine the question and answer history of the contract user separately stored in the database server, edit and process these data and make it into a database It is advisable to use cultivation experience and knowledge to diagnose the growth of crops.
By continuing to accumulate, edit, and process such a wide variety of data, the database itself can have a learning function.

In turn, weather and climate have a significant effect on crop growth.
In addition, changes in the market conditions of crops are large, and deciding the optimal shipping point for maximizing profit has a great effect on management.
For this reason, the central information processing device connects to the local weather information center and the local vegetable market center via a communication network separate from the above-mentioned network, and transmits the local weather information and the local crop market price information to the database server. The latest information is stored sequentially, and the latest information is displayed on the browsing server, and the browsing server permits the qualified contract user to browse the latest information.
In this way, the contract user can obtain necessary information and reflect it on cultivation management, harvest / shipment timing adjustment, etc., without accessing these information centers individually.
In this case, for example, a function to automatically change the set value so as to issue a signal of fully closing the ventilation window at the time, regardless of the detection signal of the rain sensor, when contacting the forecast that there is a severe thunderstorm at the predicted time. You can have.
It should be noted that which area information should be posted and displayed on the browsing server may be determined and assigned by the center side based on the ID number of the contract user and the like.

FIG. 3 is a conceptual diagram of the nutriculture system of the present invention.
In this embodiment, the nutrient solution cultivation system is realized in a greenhouse which is constructed by pillars 1 and beam trusses 2 and is covered with a hard film or glass.
This greenhouse is provided with a skylight 5 and side windows 6 as ventilation windows. Numeral 10 denotes a skylight support bracket, both ends of which are pivotally attached to the skylight 5 and a rail rack 9 which can move left and right. The skylight 5 is opened and closed by driving a skylight opening / closing device 8. Is controlled by a farm server 51 managed by the farmer. The same applies to the side window driving device 7.

Various sensors are attached to this greenhouse.
14 is an anemometer / wind indicator, 15 is a rain sensor, 17 is an indoor humidity sensor, 18 is an outdoor temperature sensor, 19 is a carbon dioxide sensor, 20 is an indoor temperature sensor, 24 is a sunshine / insolation sensor, and each sensor is a fine sensor. The measurement data is transmitted to the farm server 51 through a signal line represented by a solid line.

The farm server 51 directly controls the operation of the circulation fan 13, the heating device 33, the mist generator 21, and the heat insulation / shade curtain 22 based on the measurement data sent from the various sensors, and controls the operation of the carbon dioxide gas cylinder 42. The operation is controlled via a carbon dioxide generator 41.
Reference numeral 16 denotes a monitor camera.
The operation of the ventilation window is as described above, but the details of the control will be described later.

As described above, this system has been practically used practically for the cultivation environment system as described above, but has a nutrient solution / medium management system as a separate system independent of this.
Hereinafter, this system will be described.
A water supply pump 25, a raw water tank 26, a liquid supply device 27, a raw liquid tank A28, and a raw liquid tank B29 are placed on the floor of the greenhouse. In the tanks 28 and 29, components that do not react to form a precipitate when mixed are housed separately from each other. Numeral 30 is a dilution tank, which mixes water from a water pipe (not shown), fertilizer in both tanks 28 and 29, and acid or alkali in an acid tank or an alkali tank (not shown) to adjust the fertilizer concentration and the pH of the nutrient solution. To be prepared. These all constitute a nutrient solution adjusting device.

Further, 31 and 32 disposed in the dilution tank 30 are a first pH sensor and a first EC (electric conductivity) sensor, respectively.
The EC (electric conductivity) sensor 32 is for measuring the fertilizer concentration of the nutrient solution in the dilution tank 30, and shows a larger value as the fertilizer concentration increases, and is about 0.8 in fresh water. The pH sensor 32 is a normal one that measures the pH value of the nutrient solution.

The nutrient solution prepared in the dilution tank 30 is supplied to the plant via a nutrient solution supply pipe, a pump, and an irrigation tube 34.
The nutrient solution preparation system of the present invention will be described later.

The supply system of the nutrient solution is as described above. Hereinafter, the measurement system of the used nutrient solution, that is, the drainage solution will be described. The drainage storage tank 39 is buried underground in the greenhouse.
A second pH sensor 37 and a second EC sensor 38 for measuring the pH value of the waste liquid and the fertilizer concentration are provided upstream of the waste liquid storage tank 39.
In this embodiment, the pH sensor 37 and the EC sensor 38 are provided in the drainage measuring unit 36, but the drainage measuring unit 36 may be omitted and inserted directly into the drainage discharging pipe.
In addition, 35 is a drainage pipe.

The liquid supply device 27, the first pH sensor 31 and the first EC sensor 32 on the liquid supply side in the dilution tank 30, and the second pH sensor 37 and the second EC sensor 38 on the liquid discharge side Are connected to the farm server 51 via signal lines of different systems represented by thin solid lines.

In FIG. 3, 50 is a display / input device, 52 is a mobile phone, and 53 is a portable information terminal.
The grower usually performs input for setting the cultivation conditions described later from the input / output unit 50. In this system configuration example, the grower performs the input from the place remote from the farm server 51 using the above-described portable information terminal or the like. And the convenience of system management can be improved.

Here, the hardware configuration of the hydroponic system will be described.
The grower's farm server has a central processing unit (CPU), a first storage unit that stores preset initial settings according to the type of plant, the growth status, and the cultivation time, and then resets it. A storage unit including a second storage unit for storing setting values, a third storage unit for storing cultivation histories obtained by converting past cultivation records into a database, and information necessary for operating the farm server are input. Input means, at least a set value stored in the second storage unit, a display means for displaying a measurement value measured by each of the detection units, and a transmission / reception means.
Then, the central processing means reads the initial set value from the first storage unit only at the start of use, and reads and processes the information from the second storage unit from next time to control various devices, and stores the cultivation history data in the first time. 3 storage unit.

Here, the nutrient solution management system of the nutrient solution cultivation system of the present invention will be described in detail.
FIG. 4 stipulates, for 1120 tomatoes planted in early February, the amount of nutrient solution to be irrigated from the liquid supply pipe 34, that is, the amount of nutrient solution, and the fertilizer concentration of the nutrient solution, that is, the EC value. FIG. 6 is a display screen displaying initial setting values for the tomato irrigation conditions to be displayed on the display device 50 of the present system. FIG.
Tomatoes grow vigorously about two and a half months after planting. For this reason, in this example, since the planting is performed in early February, the supply amount is increased in early April.
In addition, the fertilizer concentration (set EC value) is set so as to be slightly higher in late March and slightly lower in mid-April.

In the present embodiment, the above-described irrigation conditions are set on the input screens shown in FIGS.
This input screen is defined by the cultivation support center, which is the nutrient solution cultivation system provider, as an initial setting value when the grower introduces the screen, and is read from the first storage unit of the farm server 51.
Here, in this embodiment, since the amount of watering per one share is defined as 0.1 l, for example, the amount of liquid supply is defined as 0.5 l in FIG. -It is supposed that watering in the middle and the latter half is performed 5 times in total at the time specified in the column of watering time.
In addition, the irrigation conditions are defined by reference numerals in the column, such as upper / middle E in March and late G in March.
The meaning of this code will be described later.

On this input screen, the grower can freely rewrite the contents of the irrigation time column and the irrigation condition column according to his or her own cultivation management method.
For example, all values for the irrigation time can be increased by 30 to delay the irrigation time by 30 minutes.
Of course, it is also possible to increase the amount of watering per time and reduce the number of times of watering.
The input screen can be easily switched to the display screen and the input screen again by operating the input device.

Next, FIG. 6 will be described.
In April, which is the period defined by FIG. 6, the supply amount is constant at 0.9 l. For this reason, the time is set so that a total of nine times of irrigation starts at 7:00 and ends at 15:00 in the upper, middle, and late periods, and ends at 15:00.
In addition, the irrigation conditions are defined as G in early and E in middle and late.

The above-mentioned irrigation conditions are inputted on the input screen shown in FIG. 7, and for example, the above-mentioned irrigation condition G is defined as the amount of irrigation 112 l and the nutrient solution condition d.

養 The nutrient solution condition d means that the adjusted EC value of the fertilizer concentration is set to 2, as shown in FIG.

The set values set on the input screens shown in FIGS. 5 to 10 are stored in the second storage unit of the present system, processed by the central processing unit (CPU), and processed through the liquid supply device 27. A: Controlling the driving of the pump of the stock solution tank B and the mixing solenoid valve (not shown) to add water to prepare a nutrient solution having a target fertilizer concentration, and store the nutrient solution in the dilution tank 30.

Normal irrigation is performed according to the above settings.
However, when the fertilizer component accumulates in the medium and the EC value of the drainage is higher than the set EC value of the drainage, temporary irrigation is automatically performed.
FIG. 9 is a screen for inputting the temporary irrigation set value. In this example, the amount of irrigation per bed is set to 200 l, and the fertilizer adjustment target value is set to の of the normal culture solution adjustment value. Since the meaning of 培養 of the culture solution adjustment value is の of the previous culture solution adjustment value, the coefficient of １ ／ is continuously multiplied.
That is, 200 l / time watering is performed while gradually decreasing the fertilizer concentration of the nutrient solution, such as 1/2 of the set value at the first time, 1/4 at the next, and 1/8 at the next. Continue until it is close to the normal value.

Although the system for automatically performing temporary watering has been described above, a column in which automatic manual switching can be set may be created in FIG. 9 so that manual temporary watering may be selected.

Irrigation is performed as described above. Next, control of the skylight will be described.
FIG. 10 shows a screen for inputting a skylight setting value. The temperature condition is set for each time segment of the start time, but the central processing unit (CPU) completely closes when the room temperature becomes lower than the temperature condition by 2 ° C. To control the window drive for the skylights and side windows.
Here, the upper limit of the opening is a ratio of the opening with respect to a state in which the ventilation window is opened by 100%, and the waiting time is a mode specified in the column of the opening mode when the temperature does not decrease to the set value even after waiting for the specified time. (In this example, the seasonal automatic mode), the ventilation window is opened step by step.
In the seasonal automatic mode, the central processing means (CPU) compares the room temperature and the medium temperature to determine the summer mode or the winter mode, and automatically selects a set value of any one of the modes as a control signal. Is selected, the window is opened by an angle obtained by dividing the upper limit of the opening into four, and if the winter mode is selected, the sky window is opened by an angle obtained by dividing the upper limit of the opening by 20 in the same manner. Control.
In addition, on this input screen, in addition to the above-mentioned items, the correspondence for strong wind and rainfall is also input and set.
In this example, the wind speed conditions for fully closing the window during strong winds are specified, the non-rainfall time when the skylight is completely closed is specified in the item of the cancellation time, and the temperature conditions, humidity conditions and ventilation conditions for ventilation during rainfall are further specified. The opening is specified.
In this example, the amount of rainfall at the time of determining that the rainfall is completely closed cannot be specified, but the determination criteria may be updated.

It is an image figure of a cultivation support network. It is a detailed view of a cultivation support network. It is a grower side nutrient culture system conceptual diagram. It is a figure which displays the supply value of a nutrient solution and the set value of EC value. It is a figure which shows the display / input screen of the watering time of March. It is a figure which shows the display / input screen of the irrigation time of April. It is a figure which shows the display / input screen of irrigation conditions. It is a figure which shows the display / input screen of nutrient solution conditions. It is a figure which shows the display / input screen of temporary irrigation conditions. It is a figure which shows the display / input screen of a skylight setting value.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 pillar 2 beam truss 4 film 5 skylight 6 side window 7 side window opening and closing device 8 skylight opening and closing device 9 rail rack 10 skylight support bracket 13 circulation fan 14 wind speed / wind direction sensor 15 rain sensor 16 monitor camera 17 indoor humidity sensor 18 outdoor temperature sensor Reference Signs List 19 carbon dioxide sensor 20 temperature sensor 21 mist generator fine mist device 22 heat insulation / shade curtain 24 sunshine / sunlight sensor 25 water pump 26 raw water tank 27 liquid supply device 28 raw liquid tank A
29 Stock solution tank B
Reference Signs List 30 dilution tank 31 first pH sensor 32 first EC (electrical conductivity) sensor 33 heating device 34 irrigation tube 35 drainage pipe 36 drainage measurement 37 second pH sensor 38 second EC (electrical conductivity) sensor 39 drainage storage tank 40 Drainage sterilizer 41 Carbon dioxide generator 42 Carbon dioxide cylinder 50 Display / input device 51 Farm server 52 Mobile phone 53 Portable information terminal

Claims (8)

Medium for cultivating plants, nutrient solution concentration, nutrient solution preparation device for preparing nutrient solution that satisfies nutrient solution conditions such as pH value, and nutrient solution to supply nutrient solution prepared in the medium according to set irrigation conditions A supply device, a drainage measuring device that measures the drainage discharged from the culture medium, and a farm server that controls the operation of the nutrient solution supply device and the nutrient solution preparation device,
The nutrient solution preparation device includes a first electrical conductivity detection unit that detects the concentration of the nutrient solution and a first pH detection unit that detects the pH value of the nutrient solution,
The farm server is
Central processing means;
A storage unit comprising: a first storage unit that stores preset initial set values in accordance with a type, a growth state, and a cultivation time of a plant; and a second storage unit that stores set values that are reset thereafter. When,
Input means for inputting information necessary for operating the farm server,
At least a setting value stored in the second storage unit, and display means for displaying a measurement value measured by each of the detection units,
The nutrient cultivation system, wherein the central processing unit uses a set value stored in the second storage unit as control data of the various devices. The drainage measuring device includes a second electrical conductivity detection unit that detects the concentration of the nutrient solution and a second pH detection unit that detects the pH value of the nutrient solution,
The storage unit includes a second storage unit in which a temporary irrigation set value is stored,
When the measured value sent from the second electric conductivity detection unit exceeds a predetermined range, the central processing unit determines, based on the temporary irrigation set value, that the fertilizer concentration of the drainage is close to a normal value. The hydroponic cultivation system according to claim 1, wherein temporary irrigation is continued. (3) The nutrient solution cultivation system according to (2), wherein the temporary irrigation set value stored in the second storage unit is for gradually decreasing fertilizer concentration. The drainage measuring device includes a second electric conductivity detection unit that detects the concentration of the nutrient solution and a second pH detection unit that detects the pH value of the nutrient solution,
When the measured value sent from the second electric conductivity detector exceeds a predetermined range, the central processing means calculates an electric conductivity set value of the nutrient solution preparing device, and automatically sets a next irrigation condition. 4. The nutrient solution cultivation system according to claim 1, further comprising an electric conductivity set value automatic rewriting function for rewriting. The central processing means calculates a difference between the air temperature detected by the air temperature detection unit and the medium temperature detected by the medium temperature detection unit, determines a ventilation window opening summer mode, a ventilation window opening winter mode, and controls the ventilation window driving. The hydroponic system according to any one of claims 1 to 4, wherein the system controls the apparatus. The medium for cultivating plants is a temperature detecting unit, a medium temperature detecting unit, an insolation detecting unit, a ventilation window, a light-blocking curtain, a warming curtain, a driving device for opening and closing the ventilation window and each curtain, and heating the room and the medium. Is disposed in a greenhouse equipped with a heating device,
The input means of the farm server inputs a ventilation window setting value, a shading curtain setting value, a heat insulation curtain setting value, a hot air heating setting value, and a hot water pipe setting value as needed, and the second storage unit stores the setting values. The nutrient solution cultivation system according to any one of claims 1 to 5, wherein: 7. The hydroponic system according to any one of claims 1 to 6, wherein the central processing means is capable of switching between a display mode and an input mode. In the input mode, the central processing means displays a number of input fields in which set values for each item such as time, watering condition, watering amount, nutrient solution condition, and temperature condition can be freely written. The hydroponic cultivation system according to any one of claims 1 to 7, wherein:

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