TWI795243B - Automated aerosol cultivation system - Google Patents

Abstract

An automated aerosol cultivation system comprises a nitrate tank, an ammonium solution tank, a first mother liquid tank, a nutrient mixing tank, a spray pipeline and a controller. The nitrate tank is configured for containing and outputting a nitrate solution. The ammonium solution tank is configured for containing and outputting an ammonium solution. The first mother liquid tank is connected to the nitrate solution tank and the ammonium solution tank for receiving and mixing the nitrate solution and the ammonium solution to form and output a first mother liquid. The nutrient mixing tank is configured for receiving the first mother liquor to form and output a nutrient solution. The controller is coupled to the nitrate solution tank and the ammonium solution tank to control the output of the nitrate solution tank and the ammonium solution tank to adjust the composition ratio of the first mother liquid.

Description

Automated Aerosol Cultivation System

The invention relates to an aerosol cultivation system, in particular to an aerosol cultivation system for automatic control of nutrient solution components and environmental bacteriostasis.

Aerosol cultivation is a kind of soilless cultivation, which belongs to the plant cultivation method without soil in the same way as matrix cultivation and hydroponic cultivation. Substrate cultivation itself has strict conditions such as sterile environment, limited plant growth and substrate replacement. Compared with hydroponic cultivation, aerosol cultivation saves water and fertilizer considerably, and can solve the problem of insufficient dissolved oxygen in water. The development of aerosol cultivation has few restrictions, the root system is well developed, and the quality of agricultural products is high. It has become a cultivation technique with great development potential in the future.

However, due to the lack of soil as a buffer and the lack of symbiotic bacteria in the soil, aerosol cultivation is quite sensitive to the temperature and humidity of the environment, absorbable nutrients and pH. On the other hand, plants generally secrete secondary metabolites into the soil to exert antibacterial and antibacterial effects, but in aerosol cultivation, plants will reduce the secretion of secondary metabolites to avoid secondary metabolites staying on the roots and hindering respiration. Even poison themselves.

At present, the industry generally sets up a nutrient solution tank, adds fertilizer powder into the water, mixes it well, and sprays the root system of the plant through the pipeline. This method consumes a lot of labor and has human errors. Moreover, applying the same fertilizer in different seasons cannot stimulate the growth potential of plants well. Then, in order to recycle the nutrient solution, the nutrient solution tank will recycle the condensed nutrient solution spray. The process of nutrient solution spraying and recycling is easy to breed bacteria, which will consume a lot of nutrients and reduce the secretion of secondary The metabolites cause damage to plants.

Therefore, there is a need in the art for a more complete and balanced system that reduces human workload and the threat of disease.

In view of this, the present invention provides an aerosol cultivation system, which can automatically adjust nutrients, prepare nutrient solution, supply water and nutrients and disinfect.

The automatic aerosol cultivation system of the present invention is applied to planting crops in a planting bed, and the planting bed is divided into root spaces by planting boards. The system includes a nitrate liquid tank, an ammonium nitrogen liquid tank, a first mother liquid tank, a nutrient solution mixing tank, a spraying pipeline device and a controller. The nitrate liquid tank is used to contain and output nitrogen mononitrate liquid. The ammonium nitrogen liquid tank is used for containing and outputting the ammonium nitrogen liquid. The first mother liquid tank is connected to the nitrate liquid tank and the ammonium nitrogen liquid tank, and is used to receive and mix the nitrate nitrogen liquid and the ammonium nitrogen liquid to form and output a first mother liquid. The nutrient solution mixing tank is connected to the first mother solution tank for receiving the first mother solution to form and output a nutrient solution. The spraying pipeline device communicates with the nutrient solution mixing tank and extends to the root space for spraying the nutrient solution. The controller is connected to the nitrate liquid tank and the ammonium nitrogen liquid tank, and is used to control the output of the nitrate nitrogen liquid tank and the ammonium nitrogen liquid tank, so as to adjust the composition ratio of the first mother liquor.

The automated aerosol cultivation system further includes a thermometer and a hygrometer. The thermometer is coupled to the controller for detecting ambient temperature and outputting a temperature signal. The hygrometer is coupled to the controller for detecting ambient humidity and outputting a humidity signal. Wherein the controller is used to adjust the composition ratio of the first mother liquor according to the temperature signal and the humidity signal.

If the ambient temperature rises, the controller adjusts the ratio of the ammonium nitrogen liquid in the first mother liquor to the nitrification nitrogen liquid; if the ambient temperature decreases, the controller adjusts the ammonium nitrogen liquid in the first mother liquor. The ratio of liquid to nitrifying nitrogen liquid is reduced. If the ambient humidity decreases, the controller adjusts the ratio of the ammonium nitrogen liquid in the first mother liquor to the nitrification nitrogen liquid; if the ambient humidity increases, the controller adjusts the ratio of the ammonium nitrogen liquid in the first mother liquor to the nitrification nitrogen liquid. ratio decreased.

When the ambient humidity exceeds 90%, the controller controls the spraying pipeline device to shorten the spraying time for spraying the nutrient solution, or extend the interval for not spraying the nutrient solution. When the ambient humidity is lower than 50%, the sensor controls the spraying pipeline device to extend the spraying time of the nutrient solution, or shorten the interval of not spraying the nutrient solution, or additionally spray non-nutrient water.

The automatic aerosol cultivation system further includes a second mother liquor tank and a third mother liquor tank. The second mother liquor tank is connected to the nutrient solution mixing tank for containing and outputting a second mother liquor to the nutrient solution mixing tank. The second mother liquor contains monopotassium phosphate, potassium sulfate and magnesium sulfate. The third mother liquor tank is connected to the nutrient solution mixing tank for containing and outputting a third mother liquor to the nutrient solution mixing tank. The composition of the third mother liquor includes chelated iron, boric acid, zinc sulfate, copper sulfate, manganese sulfate, and ammonium molybdate . The components of the first mother liquor include urea, calcium nitrate, potassium nitrate and calcium chloride. The nutrient solution mixing tank is used to receive the first mother solution, the second mother solution and the third mother solution to form and output the nutrient solution.

The automated aerosol cultivation system further includes a water tank connected to the nutrient solution mixing tank for containing and outputting water to the nutrient solution mixing tank. The controller controls the output volumes of the first mother liquid tank, the second mother liquid tank, the third mother liquid tank, and the water tank to adjust the composition ratio of the nutrient solution.

The automatic aerosol cultivation system further includes a pH meter, an acid solution tank and a lye solution tank. The pH meter is arranged in the nutrient solution mixing tank for detecting the PH of the nutrient solution and outputting a PH signal. The acid solution tank is connected to the nutrient solution mixing tank for containing and selectively outputting an acid solution to the nutrient solution mixing tank. The lye tank is connected to the nutrient solution mixing tank for containing and selectively outputting an lye to the nutrient solution mixing tank. The controller controls the acid tank and alkali according to the pH signal The output of the liquid tank is used to adjust the pH of the nutrient solution.

The automatic aerosol cultivation system further includes a liquid collection pipeline and an ultraviolet light device. The liquid collection and transportation pipeline is connected to the nutrient solution mixing tank and extends to the bottom of the root space to recover the secondary nutrient solution condensed in the root space. The ultraviolet light equipment is arranged beside the liquid collection and transportation pipeline, and is used to emit ultraviolet light to a part of the liquid collection and transportation pipeline to irradiate the secondary nutrient solution in the liquid collection and transportation pipeline.

The automatic aerosol cultivation system further includes a disinfectant tank connected to the spraying pipeline device for containing and outputting a disinfectant. Wherein, the controller controls the output of the disinfectant tank at a predetermined time, so that the spraying pipeline device sprays the disinfectant in the root space.

The liquid collection and transportation pipeline further includes a three-way valve device, the first end of the three-way valve device is connected to the nutrient solution mixing tank, the second end of the three-way valve device is extended to the root space, and the third end of the three-way valve device is connected to the 1 Disinfectant discharge area. When the spraying pipeline device sprays disinfectant, the controller adjusts the three-way valve device to close the route of the liquid collection and transportation pipeline leading to the nutrient solution mixing tank, and open the route of the liquid collection and transportation pipeline to the disinfectant discharge area. When the spraying pipeline device sprays the nutrient solution, the controller adjusts the three-way valve device to open the route of the liquid collection and transportation pipeline to the nutrient solution mixing tank, and close the route of the liquid collection and transportation pipeline to the disinfectant discharge area.

To sum up, the automated aerosol cultivation system of the present invention utilizes the mother liquor tank, which can be pre-configured with an appropriate and large amount of mother liquor to provide a long-term and stable source of nutrition. The nitrate solution and the ammonium nitrogen solution are further mixed into a mother solution in separate tanks, and the ratio can be adjusted according to temperature, humidity, or weather forecast to provide a more appropriate nitrogen source for the plants. Utilize pH adjustment to provide the proper pH. The use of liquid collection and transportation pipelines and ultraviolet light equipment for recycling nutrient solution can reduce the risk of recycling liquid pollution, while the regular spraying of disinfectant solution can effectively inhibit the reproduction of bacteria in the root system of plants. In the end, the three-way valve device is used to enable the single liquid collection and transportation pipeline to recover the nutrient solution and the diversion of the disinfectant solution, so as to avoid wasting the nutrient solution or excessive damage to the plants by the disinfectant solution.

1: Automatic aerosol cultivation system

10: Controller

101: Thermometer

102: Hygrometer

105: pH meter

11: The first mother liquor tank

111: Ammonium nitrogen liquid tank

112: Nitrate tank

12: The second mother liquor tank

13: The third mother liquor tank

14: Sink

151: acid tank

152: Lye tank

16: Nutrient solution mixing tank

17: Disinfectant tank

180: Sprinkler pipeline device

181: Liquid gathering and transportation pipeline

19: Ultraviolet light equipment

2: Planting bed

20: Root Space

3: Disinfectant discharge area

Fig. 1 depicts the functional block diagram of the automated aerosol cultivation system in a specific embodiment of the present invention;

Fig. 2 shows the functional block diagram of the automated aerosol cultivation system in another specific embodiment of the present invention;

Fig. 3 depicts a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention;

Fig. 4 shows the functional block diagram of the automated aerosol cultivation system in another specific embodiment of the present invention;

Fig. 5 shows the functional block diagram of the automated aerosol cultivation system in another specific embodiment of the present invention;

Fig. 6 shows the functional block diagram of the automatic aerosol cultivation system in another specific embodiment of the present invention;

FIG. 7 is a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention.

In order to make the advantages, spirit and characteristics of the present invention more easily and clearly understood, specific embodiments will be described and discussed in detail with reference to the accompanying drawings. It should be noted that these specific embodiments are only representative specific embodiments of the present invention, and the specific methods, devices, conditions, materials, etc. exemplified therein are not intended to limit the present invention or the corresponding specific embodiments. In addition, the vertical direction, horizontal direction and each component in the figure are only used to express their relative positions, and are not drawn according to their actual scale, so they will be described first.

The thick black line arrows in the figure of the present invention represent the liquid flow route, and the thin black line arrows represent the signal transmission route, but for the sake of simplicity, only part of the lines are drawn, and it does not mean that there must be only one connection between the two, or that there is no connection between the two connection relationship.

There are multiple embodiments in the invention. Unless otherwise stated, in each example Components with the same name and number have the same structure, action and function in principle, and can be reasonably combined or changed under the condition that those skilled in the art can easily understand. Therefore, elements that have already been described will not be repeated in subsequent embodiments.

The nitrifying nitrogen liquid mentioned in the present invention refers to the liquid in which nitrates are dissolved, and the nitrates have nitrate (NO ₃ -), such as calcium nitrate (Ca(NO ₃ ) ₂ ) or potassium nitrate (KNO ₃ ), etc. . The ammonium nitrogen liquid described in the present invention refers to the liquid in which ammonium salts are dissolved. Ammonium nitrogen can also be called ammonia nitrogen. Ammonium salts have ammonium radicals (NH ₄ ⁺ ), such as ammonium chloride (NH ₄ Cl) , ammonium sulfate ((NH ₄ ) ₂ SO ₄ ), ammonium bicarbonate (NH ₄ HCO ₃ ), urea (CN ₂ H ₄ O), etc.

Please refer to FIG. 1, which shows a functional block diagram of an automated aerosol cultivation system in a specific embodiment of the present invention. The automatic aerosol cultivation system 1 of the present invention is applied to planting crops on a planting bed 2 . The planting bed 2 is divided into a root space 20 by the planting board. The automated aerosol cultivation system 1 includes an ammonium nitrogen liquid tank 111 , a nitrate liquid tank 112 , a first mother liquid tank 11 , a nutrient solution mixing tank 16 , a spraying pipeline device 180 and a controller 10 . The ammonium nitrogen liquid tank 111 is used for containing and outputting an ammonium nitrogen liquid. The nitrate liquid tank 112 is used for containing and outputting nitrogen mononitrate liquid. The first mother liquid tank 11 is connected to the nitrate liquid tank 112 and the ammonium nitrogen liquid tank 111 for receiving and mixing the nitrate nitrogen liquid and the ammonium nitrogen liquid to form and output a first mother liquid. The nutrient solution mixing tank 16 is connected to the first mother solution tank 11 for receiving the first mother solution, diluting the first mother solution to form and output a nutrient solution. The spraying pipeline device 180 communicates with the nutrient solution mixing tank 16 and extends to the root space 20 for spraying the nutrient solution. The controller 10 is connected to the nitrate liquid tank 112 and the ammonium nitrogen liquid tank 111 for controlling the output of the nitrate liquid tank 112 and the ammonium nitrogen liquid tank 111 to adjust the composition ratio of the first mother liquor.

The types of crops are not limited to herbaceous plants, woody plants or aquatic plants, such as potatoes, tomatoes, strawberries and other economic crops. The support of plants can rely on planting boards. root of the plant To be located in the root space 20 under the planting plate, the stem and leaves of the plant are mainly located in the stem and leaf area on the shelf on the planting plate. The surroundings of the root space 20 are covered by foam boards and black cloth to achieve the effect of moisturizing and heat preservation.

The ammonium nitrogen liquid in the ammonium nitrogen liquid tank 111 and the nitrifying nitrogen liquid in the nitrate liquid tank 112 can be a concentrated solution that is more than 10 times the concentration of elements required by the plant, and it is diluted to the concentration required by the plant during the process of configuring the nutrient solution. Concentration required. The design of the first mother liquid tank 11 can make the powdery compound be prepared into a solution in advance, as a transition period before being configured into a nutrient solution. The first mother liquor of higher concentration can be placed for a long time and not easy to deteriorate, until the nutrient solution amount of nutrient solution mixing tank 16 is insufficient, then output the first mother liquor to form a lower concentration plant suitable solution in nutrient solution mixing tank 16. The spraying pipeline device 180 includes a plurality of spraying heads scattered in the root space 20 to spray the atomized nutrient solution according to the preset time, duration and water volume.

The ingredients of the first mother liquor include urea (ammonium nitrogen), calcium nitrate (nitrified nitrogen), potassium nitrate (nitrated nitrogen), calcium chloride, etc. The first mother liquor mainly provides the nitrogen source needed by the plants. The applicant of the present invention has discovered that plants absorb different nitrogen fertilizers, nitrified nitrogen and ammonium nitrogen, in different seasons. Therefore, the ammonium nitrogen liquid tank 111 and the nitrate liquid tank 112 are arranged upstream of the first mother liquid tank 11 in the system, and are uniformly controlled by the controller 10, so that the ratio of nitrogen fertilizer in the first mother liquid can be set, switched and automatically adjusted. Effect. The user can set today's nitrogen fertilizer ratio according to the weather forecast, or the system can automatically arrange today's nitrogen fertilizer ratio according to the weather forecast, or it can be automatically adjusted by the following embodiments.

Please refer to FIG. 2, which shows a functional block diagram of an automated aerosol cultivation system in another embodiment of the present invention. In addition to the aforementioned components, the automated aerosol cultivation system in this embodiment further includes a thermometer 101 and a hygrometer 102 . The thermometer 101 is coupled to the controller 10 for detecting ambient temperature and outputting a temperature signal. The hygrometer 102 is coupled to the controller 10 for detecting ambient humidity and outputting a humidity signal. Wherein controller 10 adjusts first according to temperature signal and humidity signal The composition ratio of the mother liquor realizes the automatic adjustment of the composition ratio. The thermometer 101 and the hygrometer 102 are mainly installed in the root space 20 , and the ambient temperature mainly refers to the ambient temperature of the root space 20 .

Specifically, if the thermometer 101 detects that the ambient temperature rises, the controller 10 increases the output ratio of the ammonium nitrogen liquid tank 111 and decreases the output ratio of the nitrate liquid tank 112, adjusting the ratio of the ammonium nitrogen liquid in the first mother liquor to the The proportion of nitrifying nitrogen solution increased. Similarly, if the ambient temperature decreases, the controller 10 adjusts the ratio of the ammonium nitrogen liquid to the nitrifying nitrogen liquid in the first mother liquid to decrease. In this way, when the temperature changes, the plants can absorb more of the nitrogen source they prefer to use at the moment.

If the hygrometer 102 detects that the ambient humidity has decreased, the controller 10 will reduce the output ratio of the ammonium nitrogen liquid tank 111 and increase the output ratio of the nitrate liquid tank 112, and adjust the ratio of the ammonium nitrogen liquid in the first mother liquor to the nitrification nitrogen liquid. proportion increased. Similarly, if the ambient humidity increases, the controller 10 adjusts the ratio of the ammonium nitrogen liquid to the nitrifying nitrogen liquid in the first mother liquid to decrease.

For example, when the ambient humidity exceeds 90%, the controller 10 controls the spraying pipeline device 180 to shorten the spraying duration (for example, 60 seconds is shortened to 30 seconds) for spraying the nutrient solution, or prolong the interval for not spraying the nutrient solution (for example, 15 seconds). minutes extended to 30 minutes). When the ambient humidity is lower than 50%, the sensor 10 controls the spraying pipeline device 180 to extend the spraying time of the nutrient solution, or shorten the interval of no nutrient solution spraying, or additionally spray non-nutrient water from the sink.

FIG. 3 is a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention. In this embodiment, the automated aerosol cultivation system 1 further includes a second mother liquor tank 12 and a third mother liquor tank 13 . The second mother liquor tank 12 is connected to the nutrient solution mixing tank 16, and is used for containing and outputting a second mother liquor to the nutrient solution mixing tank 16. The composition of the second mother liquor includes monopotassium phosphate, potassium sulfate and magnesium sulfate, etc., which mainly provide the plant with The macroelements needed (phosphorus, potassium, magnesium, sulfur). The third mother liquor tank 13 is connected to the nutrient solution mixing tank 16 for containing and outputting a third mother liquor to the nutrient solution mixing tank 16. The composition of the third mother liquor contains chelated iron (EDTA-Fe), boric acid, zinc sulfate, copper sulfate, manganese sulfate, ammonium molybdate, etc., which are mainly trace elements (iron, manganese, boron, molybdenum) required by plants , copper, zinc, cobalt, etc.).

Because the compound solution is prone to interaction or precipitation after long-term storage, but each compound is prepared as a mother solution, which requires a lot of equipment and control costs. Therefore, in the present invention, appropriate compounds are selected according to the needs of the plants, and the compounds are properly divided into three categories, each of which is configured into a mother liquor, so that the mother liquor prepared is relatively less likely to react or deteriorate. The three kinds of mother liquors described in the present invention can be placed for a long time, so that quality management and equipment management can reach a balance.

The components in the first mother solution, the second mother solution, and the third mother solution can be concentrated solutions that are more than 5 times the concentration of the elements required by the plants, and are diluted with water to the concentration required by the plants during the process of preparing the nutrient solution. The automated aerosol cultivation system 1 further includes a water tank 14 connected to the nutrient solution mixing tank 16 for containing and outputting water to the nutrient solution mixing tank 16 . The nutrient solution mixing tank 16 receives water, the first mother solution, the second mother solution and the third mother solution to form and output the nutrient solution. The controller 10 controls the output of the first mother liquor tank 11 , the second mother liquor tank 12 , the third mother liquor tank 13 , and the water tank 14 to adjust the composition ratio of the nutrient solution.

FIG. 4 is a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention. In this embodiment, the automated aerosol cultivation system 1 further includes a pH meter 105 , an acid tank 151 and an alkali tank 152 . The pH meter 105 is installed in the nutrient solution mixing tank 16 for detecting the pH of the nutrient solution and outputting a pH signal. The acid solution tank 151 is connected to the nutrient solution mixing tank 16 for containing and selectively outputting an acid solution to the nutrient solution mixing tank 16 . The lye tank 152 is connected to the nutrient solution mixing tank 16 for containing and selectively outputting a lye to the nutrient solution mixing tank 16 . Controller 10 controls the output of acid solution tank 151 and lye tank 152 according to the pH signal, to adjust The pH of the nutrient solution.

Since the ratio of ammonium nitrogen to nitrate nitrogen in the first mother liquor output from the first mother liquor tank 11 will change with the climate, the pH value of the nutrient solution will also fluctuate accordingly. Plants are more likely to have adverse growth conditions in the nutrient solution environment with a pH value below 5 or above a pH value of 7. When the pH meter 105 detects that the pH value of the nutrient solution is higher than the threshold value, the controller 10 controls the acid solution tank 151 to output the acid solution to the nutrient solution mixing tank 16 to reduce the pH value; when the pH meter 105 detects the nutrient solution When the pH value is lower than the threshold, the controller 10 controls the lye tank 152 to output lye to the nutrient solution mixing tank 16 to increase the pH value.

FIG. 5 is a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention. In this embodiment, the automated aerosol cultivation system 1 further includes a liquid collection and transportation pipeline 181 and an ultraviolet light device 19 . The liquid collection and transportation pipeline 181 communicates with the nutrient solution mixing tank 16 and extends to the bottom of the root space 20 to recover the secondary nutrient solution condensed in the root space 20 . The ultraviolet light device 19 is arranged beside the liquid collection and transportation pipeline 181 , and is used for emitting ultraviolet light to a part of the liquid collection and transportation pipeline 181 to irradiate the secondary nutrient solution in the liquid collection and transportation pipeline 181 .

The secondary nutrient solution refers to the nutrient solution recovered from the liquid collection and transportation pipeline 181, but it does not mean that the components in it circulate between the nutrient solution mixing tank 16 and the root space only twice, but may be multiple times. The ultraviolet light emitted by the ultraviolet light device 19 will not irradiate the root space 20, so as to avoid damage to the roots of plants. The ultraviolet light device 19 can reduce the risk that the secondary nutrient solution will carry viruses, bacteria, molds and other microorganisms from the root space 20 back to the nutrient solution mixing tank 16 .

FIG. 6 is a functional block diagram of an automated aerosol cultivation system in yet another embodiment of the present invention. The automated aerosol cultivation system 1 further includes a disinfectant solution tank 17 connected to a spraying pipeline device 180 for containing and outputting a disinfectant solution. Wherein, the controller 10 controls the output of the disinfectant solution tank 17 at a predetermined time, so that the spraying pipeline device 180 sprays the disinfectant solution in the root space 20 .

The sanitizer may be sodium hypochlorite (NaClO), chlorine dioxide ( _ClO2 ), hypochlorous acid (HClO), or other known sanitizers. The disinfectant can effectively inhibit viruses or microorganisms in the root space 20 and the liquid collection and transportation pipeline 181 . Considering that the physiological activity of plants slows down at night, and the reaction to the disinfectant is relatively slight, the controller 10 can be set to spray the disinfectant briefly at night, especially for a period of time between 8:00 and 10:00 in the evening. After spraying the disinfectant solution, do not spray the nutrient solution until early in the morning, so that the disinfectant solution can fully function. In the early morning, the plants gradually resume their physiological activities. They can be sprayed with water to wash away the disinfectant, and then sprayed with nutrient solution.

The liquid collection and transportation pipeline 181 further includes a three-way valve device (not shown), the first end of the three-way valve device communicates with the nutrient solution mixing tank 16, the second end of the three-way valve device extends to the root space 20, and the three-way valve device The third end of the valve device is connected to a disinfectant discharge area 3 . When the spraying pipeline device 180 sprays the disinfectant, the controller 10 adjusts the three-way valve device to close the route of the liquid collecting pipeline 181 leading to the nutrient solution mixing tank 16, and open the route of the liquid collecting pipeline 181 leading to the disinfectant discharge area 3, And continue until after the next water spray, or before spraying the nutrient solution. In this way, it can be prevented that the disinfectant solution leads to the nutrient solution mixing tank 16 to cause the disinfectant solution to affect the composition of the nutrient solution and repeatedly cause damage to the plants. When the spraying pipeline device 180 is spraying the nutrient solution, the controller adjusts the three-way valve device to open the route of the liquid collection and transportation pipeline 181 leading to the nutrient solution mixing tank 16, and close the route of the liquid collection and transportation pipeline 181 to the disinfectant discharge area 3. The disinfectant discharge area 3 can also be connected to the disinfectant tank 17, whereby the disinfectant can also be reused.

The various tanks mentioned above can achieve the purpose of selective liquid communication and output through pumps, water pipes, water gates, and valves. The above-mentioned various tanks may include a water level gauge to monitor the amount of liquid in the tank, and when the liquid in the tank is insufficient, the precursor solution is supplied from the upstream tank, or an alarm is issued.

Fig. 7 shows the merit of the automated aerosol cultivation system in another specific embodiment of the present invention energy block diagram. This embodiment describes that the above-mentioned various elements, devices, and equipment can work together. The controller 10 receives the data from the thermometer 101 and the hygrometer 102 , and controls the ammonium nitrogen liquid tank 111 and the nitrate liquid tank 112 to output the ammonium nitrogen liquid and the nitrate nitrogen liquid to the first mother liquid tank 11 . The controller 10 monitors the water level in the nutrient solution mixing tank 16, and controls the output of the first mother solution tank 11, the second mother solution tank 12, the third mother solution tank 13, and the water tank 14 to adjust the composition ratio of the nutrient solution. After mixing the nutrient solution, the controller 10 selectively outputs acid and lye from the acid solution tank 151 and the lye tank 152 to the nutrient solution mixing tank 16 according to the data of the pH meter 105 to adjust to an appropriate pH value .

The controller 10 drives the nutrient solution mixing tank 16 to output the nutrient solution at a predetermined time, and sprays and fertilizes the nutrient solution in the root space 20 through the spraying pipeline device 180 . The condensed secondary nutrient solution flows back to the nutrient solution mixing tank 16 through the liquid collection and transportation pipeline 181, and is irradiated and sterilized by ultraviolet light equipment on the way.

The controller 10 drives the disinfectant solution tank 17 to output the disinfectant solution at a predetermined time, and the disinfectant solution is sprayed and sterilized in the root space 20 through the spraying pipeline device 180 . Simultaneously, the controller 10 connects the route of the liquid collection and transportation pipeline 181 to the disinfectant discharge area 3, and closes the route of the liquid collection and transportation pipeline 181 to the nutrient solution mixing tank 16. The condensed disinfectant is discharged to the disinfectant discharge area 3 through the liquid collecting pipeline 181 .

In summary, the automated aerosol cultivation system of the present invention can be pre-configured with an appropriate and large amount of mother liquor to provide a long-term stable source of nutrition. The nitrate solution and the ammonium nitrogen solution are further mixed into a mother solution in separate tanks, and the ratio can be adjusted according to temperature, humidity, or weather forecast to provide a more appropriate nitrogen source for the plants. The invention provides acid-base adjustment function to provide nutrient solution with proper pH. The use of liquid collection pipelines and UV light equipment for recovered nutrient solution can reduce fertilizer costs and reduce the risk of contamination of recovered liquid. Regular spraying of disinfectant can effectively inhibit the growth of bacteria in the root system of plants, and finally use the three-way valve device to enable a single liquid collection and transportation pipeline to carry out Recycle the diversion of nutrient solution and disinfectant solution to avoid wasting nutrient solution or excessive damage to plants by disinfectant solution.

Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patent application for the present invention. Therefore, the scope of the scope of the patent application for the present invention should be interpreted in the broadest way based on the above description, so as to cover all possible changes and equivalent arrangements.

1: Automatic aerosol cultivation system

10: Controller

11: The first mother liquor tank

111: Ammonium nitrogen liquid tank

112: Nitrate tank

16: Nutrient solution mixing tank

180: Sprinkler pipeline device

2: Planting bed

20: Root Space

Claims (6)

An automatic aerosol cultivation system, which is applied to the planting of crops in a planting bed. The planting bed is separated by a planting board to form a space for a series of plants. The system includes: a nitrate liquid tank for holding and outputting a nitrification Nitrogen liquid; an ammonium nitrogen liquid tank, used to contain and output an ammonium nitrogen liquid; a first mother liquid tank, connected to the nitrate liquid tank and the ammonium nitrogen liquid tank, for receiving and mixing the nitrated nitrogen liquid and the ammonium nitrogen liquid to form and output a first mother liquid; a nutrient solution mixing tank connected to the first mother liquid tank for receiving the first mother liquid to form and output a nutrient solution; a spraying pipeline device, connected to the nutrient solution mixing tank and extended to the root space for spraying the nutrient solution; a controller connected to the nitrate solution tank and the ammonium nitrogen tank to control the nitrification nitrogen tank and the ammonium The output of the nitrogen liquid tank to adjust the composition ratio of the first mother liquor; a thermometer, coupled to the controller, for detecting an ambient temperature to output a temperature signal; a hygrometer, coupled to the controller, for Outputting a humidity signal by detecting an ambient humidity; a liquid collection and transportation pipeline connected to the nutrient solution mixing tank and extending to the bottom of the root space to recover a secondary nutrient solution condensed in the root space; Disinfectant solution tank, connected to the spraying pipeline device, used to contain and output a disinfectant solution; and a three-way valve device, one of the first ends of the three-way valve device communicates with the nutrient solution mixing tank, one of the three-way valve devices The second end extends to the root space, and a third end of the three-way valve device is connected to a disinfectant discharge area; wherein, if the ambient temperature increases or the ambient humidity decreases, the controller adjusts the first mother The ratio of the ammonium nitrogen solution in the liquid to the nitrification nitrogen solution increases; wherein, the controller controls the output of the disinfectant tank at a predetermined time, so that the spraying pipeline device sprays the disinfectant in the root space, and when When the spraying pipeline device sprays the disinfectant, the controller adjusts the three-way valve device to close the route of the liquid collection and transportation pipeline to the nutrient solution mixing tank, and open the route of the liquid collection and transportation pipeline to the disinfectant discharge area . The system described in item 1 of the scope of the patent application, wherein when the ambient humidity exceeds 90%, the controller controls the spraying pipeline device to shorten the spraying time of the nutrient solution, or extend the interval of not spraying the nutrient solution . The system as described in Item 1 of the scope of the patent application further includes: a second mother liquor tank connected to the nutrient solution mixing tank for containing and outputting a second mother liquor to the nutrient solution mixing tank, the second mother liquor The components include monopotassium phosphate, potassium sulfate and magnesium sulfate; and a third mother liquor tank connected to the nutrient solution mixing tank for containing and outputting a third mother liquor to the nutrient solution mixing tank, the composition of the third mother liquor includes There are chelated iron, boric acid, zinc sulfate, copper sulfate, manganese sulfate, and ammonium molybdate; the components of the first mother liquor include urea, calcium nitrate, potassium nitrate, and calcium chloride; the nutrient solution mixing tank is used to receive The first mother liquor, the second mother liquor and the third mother liquor are used to form and output the nutrient solution. The system described in item 3 of the scope of the patent application further includes: a water tank connected to the nutrient solution mixing tank for containing and outputting water to the nutrient solution mixing tank; wherein the controller controls the first mother liquid tank, The second mother liquor tank, the third mother liquor tank, the The output volume of the water tank is used to adjust the composition ratio of the nutrient solution. The system as described in item 1 of the scope of the patent application, which further includes: a pH meter, set in the nutrient solution mixing tank, for detecting the pH of the nutrient solution, and outputting a pH signal; an acid solution A tank connected to the nutrient solution mixing tank for containing and selectively outputting an acid solution to the nutrient solution mixing tank; and a lye tank connected to the nutrient solution mixing tank for containing and selectively outputting an alkali liquid to the nutrient solution mixing tank; wherein, the controller controls the output of the acid solution tank and the lye solution tank according to the pH signal, so as to adjust the pH of the nutrient solution. The system described in item 1 of the scope of the patent application further includes: an ultraviolet light device, which is arranged beside the liquid collection and transportation pipeline, and is used to emit ultraviolet light to a part of the liquid collection and transportation pipeline to irradiate the liquid collection and transportation pipeline. The secondary nutrient solution in the pipeline.

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