KR20120105724A - Supplying control system and method carbon dioxide apply to weights the environment - Google Patents

Abstract

PURPOSE: Carbon dioxide supply controlling system and method applying the environmental weight are provided to prevent the environmental contamination by preventing the oversupply of carbon dioxide gas. CONSTITUTION: A carbon dioxide supply controlling system comprises the following: first and second CO2 sensors(11, 12) detecting the CO2 amount of two divided spaces, separately; a solar sensor(13) detecting the quantity of sun light; an indoor temperature sensor(14) detecting the indoor temperature; a humidity sensor(16) detecting the humidity; a data setting unit(17) setting the feeding time of CO2, the standard CO2 value, the standard range for the solar radiation value, the solar radiation limit value, and the humidity limitation and ventilation window opening extent; a data saving unit(24) saving data values from the data setting unit; a controller(18) controlling the gas supply from a CO2 feeder when the detected humidity is higher than the standard value; a monitor display unit(19) displaying images by the control of the controller; an alarm sound generator(23) generating an alarm sound when the detected value from the CO2 sensors is outside the limitation range; and a sensor alarm lamp(20) operated with the generation of the alarm sound. [Reference numerals] (11) First CO2 sensor; (12) Second CO2 sensor; (13) Solar sensor; (14) Indoor temperature sensor; (15) Medium temperature sensor; (16) Humidity sensor; (17) Data setting unit; (18) Controller; (19) Monitor display unit; (20) Sensor alarm lamp; (21) CO2 supply unit; (22) Window opening/closing unit; (23) Alarm sound generator; (24) Data saving unit; (25) Heating unit

Description

Supplying control system and method carbon dioxide apply to weights the environment}

The present invention relates to a carbon dioxide supply control system and method applying environmental weights, and more particularly, to prevent environmental pollution by preventing over-supply of carbon dioxide (CO2), and to supply a suitable amount of carbon dioxide according to the plant environment, The present invention relates to a carbon dioxide supply control system and method that applies an environmental weight to reduce the cost of carbon dioxide gas and reduce the cost of crop planting by increasing the income by preventing the increase of carbon dioxide gas.

In general, the conventional greenhouse CO2 supply device simply supplies the CO2 gas when the amount of CO2 in the greenhouse is less than the reference value compared to the supply amount while repeating the supply and the standby with the supply cycle and supply setting once or twice a day. If it is abnormal, it will function to stop supply.

However, such a conventional apparatus is composed of one system per CO2 sensor, so that a situation of oversupply and undersupply of CO2 occurs when a sensor fails.

In addition, the CO2 gas supply device operates normally, but CO2 gas is supplied by setting the amount of CO2 gas absorption, which is a measure of the activity of the crops in the greenhouse and the growth environment of the crop, so that oversupply and undersupply occur. Since the supplied CO 2 gas is released into the atmosphere, there is a problem of environmental pollution caused by the excess gas emitted.

The present invention is to overcome the above-mentioned conventional problems, to prevent the over-supply of CO2 gas to prevent environmental pollution, supplying the appropriate amount of carbon dioxide gas in accordance with the plant environment to produce high-quality crops to increase the income, carbon dioxide It is an object of the present invention to provide a carbon dioxide supply control system and method with environmental weighting that prevents gas overuse, thereby reducing the cost of using carbon dioxide and reducing crop costs.

Carbon dioxide supply control system applying the environmental weight according to the present invention for achieving the above object, the first CO2 sensor and the second CO2 sensor for detecting the CO2 amount of each space by dividing the two zones; Solar radiation sensor for sensing the amount of sunlight; An indoor temperature sensor for sensing a room temperature; A humidity sensor for sensing humidity; The time to supply CO2 is divided by the insolation rate, classified according to the growth activity of the feed plant, the range of the reference CO2 value and the reference insolation value to be supplied by supply time range, the insolation limit and the humidity limit value are set, and the CO2 when the ventilation window is opened. A data setting unit for setting the opening degree (%) of the ventilation window to limit the gas supply; A data storage unit for storing data values set by the data setting unit; It receives the CO2 sensor and the analog signal received from each sensor, converts it into a digital numerical value, displays it on the monitor display, and gives the upper and lower limits of the received input value to monitor in real time whether the input sensor value is normal. In case of CO2 sensor, if one sensor is out of the upper / lower limit range, it is judged as a sensor error, alarm sound is generated through the alarm sound generating part, and the sensor warning lamp on the side where the error occurs operates the lamp and blinks at the same time. A control unit for displaying a sensor warning message on a display unit, wherein the controller is configured to limit the supply of gas to the CO2 supply unit when the amount of insolation detected by the solar sensor is lower than a reference value or the humidity detected by the humidity sensor is higher than a reference value; A monitor display unit displaying an image under the control of the controller; And a warning sound generating unit and a sensor warning lamp for generating a warning sound.

When the environmental weight is applied, the control unit detects the variation in the amount of change in the solar radiation at predetermined time intervals, converts the deviation value into the required CO2 value, and applies the 1 to 5 step environmental weights set to the resultant to calculate the deviation. Determine the size of the resultant value, add or subtract from the basic CO2 value, generate the CO2 environmental weight for the environmental weight, detect the amount of plant absorption and decrease after supplying the CO2 gas on a regular basis, and convert the decrease into the absorption amount per minute. It is preferable to generate the carbon dioxide supply target value by adding the weight of CO 2 gas absorption reduced by absorption by applying the weights of 1 to 5 to the environmental weight.

According to the present invention, there is provided a method of controlling carbon dioxide supply using environmental weights, the method comprising: detecting two CO 2 areas by dividing two zones into a first CO 2 sensor and a second CO 2 sensor; Sensing the amount of sunlight with a solar sensor, sensing the temperature of the room with an indoor temperature sensor, and sensing humidity with a humidity sensor; The data setting unit divides the time for supplying CO2 by the amount of insolation, classifies it according to the growth activity of the feed plant, sets the range of the reference CO2 value and the reference insolation value to be supplied for each supply time period, the solar radiation limit value (photocompensation point) and humidity. Setting a limit value and setting a ventilation window opening degree (%) to limit the supply of CO 2 gas when the ventilation window is opened; Storing data values set by the data setting unit in a data storage unit; The control unit receives the CO2 sensor and the analog signal received from each sensor, converts it into a digital numerical value, displays it on the monitor display unit, and gives the upper and lower limits of the received input value to monitor whether the input sensor value is normal. In case of the CO2 sensor, if one of the sensors is out of the upper and lower limit range, it is determined that the sensor is abnormal, generates a warning sound through the warning sound generating unit and the sensor warning lamp of the side where the error occurs, the lamp blinks, At the same time, a sensor error warning message is displayed on the monitor display, but when the amount of solar radiation detected by the solar sensor is lower than the solar limit value (photo compensation point) or the humidity detected by the humidity sensor is higher than the humidity limit, the gas supply of the CO2 supply unit is restricted. Characterized in that it comprises a step.

According to the carbon dioxide supply control system and method applying the environmental weight according to the present invention configured as described above, the photosynthetic action of plants in the 2 to 3 hours after sunrise is the most active time, 70 to 80% of the amount of photosynthesis and light compensation of plants Apply environmental weighting to changes in solar radiation in point and photo-saturation point Focusing on solar radiation change Supplying CO2 gas and supplying appropriate amount of carbon dioxide gas according to plant growth environment to produce high quality crops to increase income and increase oversupply of CO2 gas It prevents environmental pollution and prevents over-use of carbon dioxide, reducing the cost of using carbon dioxide and reducing crop cost.

1 is a block diagram showing an embodiment of a carbon dioxide supply environment tracking control system according to the present invention.
2 is a control flowchart illustrating an embodiment of a method for controlling carbon dioxide supply environment tracking according to the present invention.
3 is a graph showing a sensor detection data value on a monitor screen according to the present invention.
Figure 4 is a graph showing the relationship between the intensity of light and CO2 absorption during photosynthesis of the plant of the present invention.
5 is a graph showing the relationship between the increase and decrease in the amount of insolation with increasing weight.
Figure 6 is a CO2 supply environment tracking control graph.
7 is a graph showing output signal upper and lower limit settings.

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

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may properly define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

1 is a block diagram showing an embodiment of a carbon dioxide supply environment tracking control system according to the present invention, Figure 2 is a control flowchart showing an embodiment of a carbon dioxide supply environment tracking control method according to the present invention.

As shown, the present invention is the first CO2 sensor 11, the second CO2 sensor 12, the solar radiation sensor 13, the room temperature sensor 14, the medium temperature sensor 15, the humidity sensor 16, Data setting unit 17, control unit 18, monitor display unit 19, sensor warning lamp 20, CO2 supply unit 21, ventilation window opening and closing unit 22, warning sound generating unit 23 and data storage unit 24 It includes.

The first CO2 sensor 11 and the second CO2 sensor 12 divide the two zones to detect the amount of CO2 in each space.

In the present invention, two CO2 detection sensors 11 and 12 are basically installed, and the reason is that the size of the general greenhouse is larger than 500 to 1000 pyeong, so that the supply inlet side and the end of the supply line are provided in one supply line. In order to solve the inequality in the supply volume due to the pressure difference, CO2 gas is supplied by separately supplying and sensing the supply to 2 zones.

Therefore, when CO2 sensor failure occurs, it displays fault indication and warning sound to promptly indicate whether there is a sensor abnormality, and when one CO2 sensor failure occurs, the system is operated to switch to another CO2 sensor value that is operating normally. It can be prevented.

The solar sensor 13 detects the amount of sunlight, the room temperature sensor 14 detects the temperature of the room.

The medium temperature sensor 15 detects the root temperature of the plant, and the humidity sensor 16 detects the humidity of the room.

The data setting unit 17 divides and sets the time for supplying CO 2 into three sections a day based on the amount of insolation.

In other words, by dividing the morning time, the morning time, the afternoon time by the solar radiation standard according to the growth activity of the feed plants, and sets the range of the standard CO2 value and the standard solar radiation value to be supplied for each supply time.

The set reference CO2 value and the reference solar radiation value are a comparative measure when the environmental weight is applied. In addition, the solar radiation limit value (light compensation point) and the humidity limit value is set, and the ventilation window opening degree (%) to limit the CO 2 gas supply when the ventilation window is opened.

The data storage unit 24 stores the data values set by the data setting unit 17.

The control unit 18 receives the analog signal (4 ~ 20mA) received from the CO2 sensor 11, 12 and each of the sensors 13 to 16, converts it into a digital numerical value and displays it on the monitor display unit 19, The upper and lower limits of the received input value are assigned to monitor in real time whether the input sensor value is normal.

In addition, in the case of the CO2 sensor (11) 12, if any one of the sensor is out of the upper and lower limit range, it is determined that the sensor abnormality, the alarm sound generated through the warning sound generating unit 23 and the sensor on the side where the abnormality The warning lamp 20 operates and the lamp blinks, and at the same time, a sensor error warning message is displayed on the monitor display unit 19.

When only one of the CO2 sensors 11 and 12 operates, the CO2 supply of the CO2 supply unit 21 is stopped, and if the sensor value is detected within the normal range but falls below the set lower alarm limit, the sensor warning lamp 20 operates. Together, the monitor display 19 displays a text warning message "Check supply line."

When the environmental weight is applied, the control unit 18 detects the variation in the amount of change in the solar radiation at intervals of 10 seconds, converts the deviation value into the required CO2 value, and applies the environmental weights of 1 to 5 set in the resultant value. The magnitude of the resultant value of the computed value is determined, and the CO2 environment for the environmental weight generates weight by adding or subtracting to the basic CO2 value.

If the environmental weight is not applied, the CO2 supply unit 21 is operated by repeatedly supplying and supplying standby with a preset supply time and a reference CO2 value.

At this time, the upper and lower limits of the weighted CO2 amount are set in advance, and if the upper limit value is higher than the upper limit value, the lower limit value is converted into the lower limit value. Supply can be stabilized by preventing supply and undersupply.

In addition, the controller 18 detects the amount of the plant absorbed and reduced after supplying CO 2 gas in units of 10 seconds when the gas absorption amount weight is applied, and the absorption is reduced by applying a weight of 1 to 5 stages in which the decrease is converted into an absorption amount per minute. The carbon dioxide gas absorption weight is added to the environmental weight to generate a carbon dioxide supply target value.

Therefore, in the environment where the environmentally-weighted CO2 amount is reduced by the environment outside the greenhouse, the supply target value is decreased by weighting. However, when the plant activity is increased and the absorption amount is increased, the increase in the absorption weight is reflected to decrease the decrease in the supply target value. .

The weight is set because the amount of carbonic acid required depends on the plant growing greenhouse environment and the size of the plant.

Although the supply target is determined according to the absorbed amount of environmental changes, CO2 supply may not be necessary depending on the internal and external conditions of the greenhouse. This is because CO2 gas is too low when the solar radiation is too low (below the optical compensation point) or the humidity is too high. Supply can be removed.

When the temperature inside the greenhouse rises and the ventilation window is opened, a large amount of external air is introduced into the greenhouse. At this time, the air contains about 21% of CO2. Due to this difference, the limit of CO2 gas supply due to the opening of the ventilation window is opened by inputting the ventilation window opening and closing signals to open the ventilation window more than the limit (%) to limit the supply. It will stop.

However, if the amount of CO2 gas in the greenhouse drops to the set lower alarm limit in the state that the gas supply by the ventilation window opening limit state (%) is blocked, the gas supply will be raised, but it will be supplied by the minimum supply value set when the window is opened. Supply target value is determined and supplied by environmental weight.

<Examples>

The room temperature value detected by the room temperature sensor 14 is different from the optimum growth temperature for each crop. For example, in the case of paprika which uses a lot of CO2 supply facilities, 22 to 25 degrees is the optimum temperature to maintain 18 to 20 degrees at night. In order to prevent overheating and low temperature growth, the sensor data is output to high temperature alarm at the optimum growth limit temperature of 35 degrees and low temperature alarm at the minimum limit temperature of 13 degrees. Check the temperature ”and the warning letter is displayed, and when the high temperature alarm occurs, the ventilation window open signal output and the ventilation fan (not shown) are discharged to the outside of the greenhouse to control the greenhouse temperature control device as an emergency operation control signal due to the failure. User can select and use, and comprehensively graph and display all sensor data recorded in real time simultaneously. The temperature data is utilized to make it easy to know the amount of change in the time zone so that the user can find the optimal plant cultivation conditions for the greenhouse (see FIG. 3).

3 is a graph displaying sensor detection data values according to the present invention on a monitor screen, and a graph for each sensor can be selected and displayed, and only a graph of sensors to be compared can be displayed on a screen to compare changes between data. have.

In addition, by grasping the interaction of the environment inside the greenhouse at a glance, it is very helpful for the user to create the optimal plant growth environment for his greenhouse.

When the high temperature alarm stops supply of CO2 gas, the ventilation window does not operate normally when the high temperature alarm prevents nutrient growth that only leaves the leaves of the plant at high temperature and high humidity.

The use of the medium temperature detected from the medium temperature sensor 15 is the temperature of the root portion of the plant, which is very important for the plant to absorb nutrients, and should be maintained at 18 to 20 degrees, which is the same as the lower limit temperature alarm value. It is one of the important elements to be equipped basically for plant growth.

To this end, when the discharge temperature (source temperature) falls below the minimum limit temperature of 13 degrees or less, the present invention displays a text message above the discharge temperature on the monitor display unit 19, and operates the heating unit 25 to operate the temperature data inside the greenhouse. Together with the user can be used as a heating control signal.

In general, there is a separate facility for heating control, but the present invention is a very useful data as an auxiliary signal of the heater control because it is controlled by the temperature inside the greenhouse.

In addition, when the medium temperature (source part temperature) is below the minimum limit temperature, the operation of the CO2 supply unit 21 is stopped to stop the CO2 supply.

Humidity sensor 16 maintains 70 ~ 80% of constant humidity in greenhouse, which is an important factor in growing crops, which causes moldy diseases caused by over-humidity, and the damage caused by this causes big problems in producing high quality crops. The user can select and use the circulation fan control.

The reason for the installation of the humidity sensor 16 of the present invention is that the supply of CO2 gas becomes unnecessary in a phenomenon in which the amount of CO2 gas absorption required for assimilation is reduced or stopped while the transpiration of the plant is slowed down due to overhumidity (more than 90% of humidity). If the humidity is set to limit the humidity limit to limit the supply of CO2 gas can prevent consumption due to the oversupply of CO2 gas and can prevent environmental pollution by air emissions.

In other words, when supplying carbonic acid at high temperature and high humidity in the state of insolation during rainfall, it is preferable to stop supplying CO 2 at high temperature and high humidity because the plant only causes nutrient growth and leaves grow.

As an embodiment of the present invention, when each CO2 sensor 11, 12 is below the normal sensor value, the CO2 sensor 11, 12 used in the present invention can detect the CO2 concentration of 0 ~ 2000PPM Although it is possible to measure the concentration of 0 ~ 2000PPM CO2 gas by selecting a sensor, if a large amount of air is introduced from outside of the ventilation window of the greenhouse, the concentration of about 21% in the air is about 350PPM, so it is not necessary to supply artificial CO2 gas. In the atmosphere, the ventilation window of the greenhouse is insufficient to supply enough air or the gas cannot be supplied due to the abnormality of the supply line (electrical fault, breakage of the line, lack of gas in the supply tin, etc.). When the gas drops below -10%, the gas sets the lower limit alarm so that the user can quickly determine whether there is an abnormality in the CO2 gas supply system and take action. Sets.

At this time, the gas supply system warns of normal operation, but the gas continues to be supplied. If less than 50PPM, a warning message is displayed on the monitor display unit 19 due to a sensor error, and the supply is stopped from the CO2 supply unit 21.

After 1 minute, other normal sensor values are received and a temporary emergency supply is performed. At this time, the sensor warning lamp (sensor failure indicator lamp and system fault lamp) 20 displays until the fault sensor is normally restored.

The maximum supply plant is configured to be set by the user in consideration of the type and condition of the crop, each having a CO2 saturation point of 1000 to 1200 PPM. For example, 900 PPM is suitable for paprika.

In describing the stepwise environmental weights applied to the present invention, since the condition of photosynthesis of plants is the largest variable, it has been found by Jan Ingenhaus, Netherlands, that the photosynthetic CO2 absorption of plants increases with the intensity of light. As found by researchers studying many plants, most plants grown in greenhouses belong to sunny plants, although some characteristics differ depending on the crop, but below the light inclusion point, photosynthesis and CO2 absorption are proportional to light intensity. do.

Applicant scans the amount of change of solar radiation at intervals of 10 seconds, stores the amount of solar radiation 10 seconds ago, and compares it with the amount of solar radiation after 10 seconds. When the deviation value occurs, the user wants to supply each supply stage according to the condition of the crop. The reference CO2 amount setting value and the reference insolation amount setting value were used as the reference, and the deviation of the solar change variation value was detected as the percentage change in the reference insolation amount, and the same percentage amount of the reference CO2 amount was calculated.

Figure 4 is a graph showing the relationship between the light intensity and CO2 absorption amount during photosynthesis of the plant of the present invention.

When the light intensity reaches the plant's photosaturation point, the CO2 absorption is the same even if the light intensity increases.

When the intensity of light falls below the plant's light compensation point, it emits without absorbing CO2.

These graphs are general data and may vary depending on the type of plant.

As an example, referring to FIG. 4, if the user has set the supply start time 8:00, the end time 10:00, the supply standard CO2 amount 500PPM, and the standard insolation amount 450w / m2, the solar radiation amount 450 w / 10 seconds before When the solar radiation amount 500 w / m2 after 10 m <2> and 10 second generate | occur | produces, the solar radiation amount rises to 500-450 = 50w / m <2> and the deviation 50w / m <2> arises.

Therefore, the deviation value / reference solar value * 100 = 50/450 * 100 = 11%, an increase factor of 11% solar radiation occurs, a proportional amount of 55PPM corresponding to 11% of the standard CO2 amount 500PPM.

When this is calculated as a proportional integral value, the following equation (1) is obtained.

Where MVp = proportional value, Mvi = integral value, Kp = proportional number (environmental weight value), Ti = time to reach the output value, E = difference between the sensor value and the target value, and dt = derivative time.

The environmental weight (Kp) is set at 1, 1.5, 2, 2.5, 3. 5 levels according to the greenhouse size and CO2 supply facilities.

The time Ti to reach the output value is determined by the size gas pressure and the like of the greenhouse gas supply line.

Therefore, when the value is substituted into Equation 1, the same result as Equation 2 can be obtained.

Therefore, since the weight of 70PPM is generated, the initial value of the environmentally-weighted supply of the reference supply amount 500PPM + 70PPM = 570PPM becomes, and CO2 is supplied until the target sensor input value is equal to or greater than 570PPM.

The above numerical calculation is performed by calculation by constants inside a conventional PLC (not shown).

5 is a graph showing the relationship between the increase and decrease in the amount of solar radiation according to the increase in weight, it can be seen that increasing the proportional coefficient (weighted value) under the same conditions increases the supply target PPM increases and decreases when the amount of solar radiation increases and decreases.

6 is a graph of CO 2 supply environment tracking control.

Since the light saturation is different for each plant, the increase in supply due to the increase in insolation does not increase the CO2 supply due to the increase in insolation when the amount of insolation reaches the point of light saturation of the cultivated plant set by the user. If CO2 gas is supplied but the amount of insolation decreases, and the amount of insolation reaches below the setting point of the cultivation of the crop, the target value decreases due to the proportional action to the decrease in the amount of insolation, and the supply of CO2 gas is stopped. If this value is established, a proportional integral value according to the supply condition is generated, and the supply target value is increased so that the CO2 sensor value <target value condition starts the supply of the established gas.

An example of calculating CO 2 absorption is as follows.

When the "sensor value <supply target value" condition is met, CO2 supply is started, and it operates with one supply time and supply standby cycle. This means that when CO2 gas is supplied to a large space, the time to spread in the greenhouse (the size and supply of greenhouses) Depends on the arrangement size of the gas equipment line, etc.) Supplying at the interval of one-time supply, standby time because it causes supply obstacles due to the freezing of the line generated during continuous supply of liquefied CO2 gas.

If the supply condition is satisfied, the CO2 gas is supplied once and the CO2 concentration drops slowly according to the absorption of the plant during the waiting time.The deviation between the sensor value and the 10 seconds before and after 10 seconds from the completion of gas supply once occurs. Then, this is converted into an estimated consumption ratio converted into consumption per minute, and calculated as a ratio of the set maximum value of the dispensing ratio, multiply by the addition value of the corresponding ratio to generate the dispensing ratio weight.

The maximum amount of excretion is set at 100 ~ 300PPM, which is the most active carbonation assimilation in the field during the field survey. Data collected from fruiting paprika between 2 ~ 3 hours after sunrise averaged about 10 ~ 30PPM per 10 sec. In terms of minutes, the maximum value was set to 300PPM at 270PPM plus the maximum value of + 30% with "30PPM ⅹ 6 = 180PPM".

For example, the tracking minutes consumption calculation, when the maximum amount of consumption is set, divide it by 10% 10% ~ 100% in step 10 and multiply the reduction value before and after 10 seconds by giving the weight for each step 5 to generate the tracking minutes consumption.

If the maximum consumption value 300PPM step weights are shown in Table 1 below.

Discharge Ratio Setting Value

Step weight
100%

300 ppm

30%
90%

260PPM
80%

230PPM

25%
70%

200 PPM
60%

170PPM

20%
50%

140PPM
40%

110ppm

15%
30%

90 PPM
20%

60PPM

10%
10%

30PPM
0%

Deadband

Supply waiting time after one supply of CO2 gas (after-supply carbonic acid diffusion time) The CO2 concentration PPM decreases according to the activity of the plant. If the CO2 concentration in the greenhouse is 500PPM 10 seconds immediately after the CO2 supply, the CO2 concentration becomes 480PPM. = Before and after deviation "500-480 = 20PPM" is reduced, which translates to "20PPM ⅹ 6 = 120PPM / minute", 120PPM / min is the weight of 20% "120PPM ⅹ 20% = 24PPM".

At this time, if the environment by solar radiation was 450 PPM by weight, the reduction by consumption amount is 24PPM plus the final supply target value of 474PPM.

It supplies CO2 by opening the electronic valve for CO2 supply when CO2 sensor input value <474PPM when the next supply condition is met.

An embodiment of the supply restriction condition and the output value restriction condition are as follows.

1. Restriction by reduction of solar radiation is limited by the user setting the optical compensation point of the crop. For paprika it is 150w / m2. (Note: Paprika's saturation point 470 ~ 480w / m ㅂ)

2. Restriction by humidity is the effect of transpiration during the assimilation of plants. At this time, the moisture of the plant is evaporated through the leaves. If the humidity in the greenhouse is too humid, the CO2 supply is rather adverse. The supply is stopped because of the cycle. It is a nutrient growing condition of the plant, causing the leaves to grow and cause side effects.

In the case of paprika, the proper humidity is 70 ~ 80% and more than 90%. When over-humidity is formed, it becomes difficult to transpire.

3. The supply limit in case of overheating should be set in accordance with the condition of crop cultivation of the user due to the nature of the greenhouse.

Paprika temperature is 22-24 degrees.

At high temperature disturbance temperature 35 degrees, high temperature alarm sound and text can be displayed.

4. The limit of the degree of opening of the window (%) is determined by the size of the greenhouse-scale ventilation window, select whether or not to apply, and limit the opening of the window more than the limit of supply of the opening of the window (%).

If the ventilation window is not large enough or if the winter is slightly ventilated, the crop is highly yellow and the mode is switched to the minimum supply condition when there is not enough CO2 in the air.

7 is a graph showing the output signal upper and lower limit setting, it is possible to stabilize the supply target value by limiting the output value within the upper and lower limit set value when the user's immature setting and the sudden change of the environmental variable.

For reference, there are two types of plant growth. First, nutrient growth, leaves and stems that grow the plant itself, and second growth, there are growths for flowers and fruits to leave genes.

Configurations shown in the embodiments and drawings described herein are only one of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be variations and variations.

Accordingly, the present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the spirit of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

11: first CO2 sensor 12: second CO2 sensor
13: solar sensor 14: room temperature sensor
15: discharge temperature sensor 16: humidity sensor
17: data setting unit 18: control unit
19: monitor display 20: sensor warning lamp
21: CO2 supply part 22: ventilation window opening and closing part
23: warning sound generating unit 24: data storage unit
25: heating unit

Claims (4)

A first CO2 sensor and a second CO2 sensor for dividing the two zones and detecting the amount of CO2 in each space;
Solar radiation sensor for sensing the amount of sunlight;
An indoor temperature sensor for sensing a room temperature;
A humidity sensor for sensing humidity;
Divide the time to supply CO2 by insolation standard, classify according to the growth activity of feed plant, set the range of reference CO2 value and insolation value to be supplied by supply time, set insolation limit (photo compensation point) and humidity limit A data setting unit for setting a ventilation window opening degree (%) to limit the supply of CO 2 gas when the ventilation window is opened;
A data storage unit for storing data values set by the data setting unit;
It receives the CO2 sensor and the analog signal received from each sensor, converts it into a digital numerical value, displays it on the monitor display, and gives the upper and lower limits of the received input value to monitor in real time whether the input sensor value is normal. In case of CO2 sensor, if one sensor is out of the upper / lower limit range, it is judged as a sensor error, alarm sound is generated through the alarm sound generating part, and the sensor warning lamp on the side where the error occurs operates the lamp and blinks at the same time. A control unit for displaying a sensor warning message on a display unit, wherein the controller is configured to limit the supply of gas to the CO2 supply unit when the amount of insolation detected by the solar sensor is lower than a reference value or the humidity detected by the humidity sensor is higher than a reference value;
A monitor display unit displaying an image under the control of the controller;
Carbon dioxide supply control system to which the environmental weight is applied, comprising a warning sound generating unit for generating a warning sound and a sensor warning lamp.

The method of claim 1,
The control unit,
In the case of applying the environmental weight, the variation of solar radiation change is detected at regular time intervals, the deviation value is converted into the required CO2 value, and the environmental value of 1 to 5 set in this result value is applied to determine the calculated value of the calculated value. Determine the size, add or subtract from the base CO2 value, and the CO2 environment to the environmental weight generates weight,
Detects the amount of water absorbed and reduced by plants after supplying CO2 gas in a certain time unit, and converts the reduced amount into the absorbed amount per minute by applying the weight of 1 ~ 5 steps. Carbon dioxide supply control system applying the environmental weight, characterized in that for generating.

Dividing the two zones into a first CO2 sensor and a second CO2 sensor to detect the amount of CO2 in each space;
Sensing the amount of sunlight with a solar sensor, sensing the temperature of the room with an indoor temperature sensor, and sensing humidity with a humidity sensor;
The data setting unit divides the time for supplying CO2 by the amount of insolation, classifies it according to the growth activity of the feed plant, sets the range of the reference CO2 value and the reference insolation value to be supplied for each supply time period, the solar radiation limit value (photocompensation point) and humidity. Setting a limit value and setting a ventilation window opening degree (%) to limit the supply of CO 2 gas when the ventilation window is opened;
Storing data values set by the data setting unit in a data storage unit;
The control unit receives the CO2 sensor and the analog signal received from each sensor, converts it into a digital numerical value, displays it on the monitor display unit, and gives the upper and lower limits of the received input value to monitor whether the input sensor value is normal. In case of the CO2 sensor, if one of the sensors is out of the upper and lower limit range, it is determined that the sensor is abnormal, generates a warning sound through the warning sound generating unit and the sensor warning lamp of the side where the error occurs, the lamp blinks, And simultaneously displaying a sensor abnormality warning message on the monitor display, and if the amount of insolation detected by the solar sensor is lower than the solar limit or the humidity sensed by the humidity sensor is higher than the humidity limit, the gas supply of the CO2 supply unit is included. CO2 supply control room to which the environmental weight is applied .

The method of claim 3,
The control unit,
In the case of applying the environmental weight, the variation of solar radiation change is detected at regular time intervals, the deviation value is converted into the required CO2 value, and the environmental value of 1 to 5 set in this result value is applied to determine the calculated value of the calculated value. Determine the size, add or subtract from the base CO2 value, and the CO2 environment to the environmental weight generates weight,
Detects the amount of water absorbed and reduced by plants after supplying CO2 gas in a certain time unit, and converts the reduced amount into the absorbed amount per minute by applying the weight of 1 ~ 5 steps. Carbon dioxide supply control method applying the environmental weight, characterized in that for generating.

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