LU102495B1 - Water, fertilizer, air and heat precision irrigation control integrated machine. - Google Patents

Abstract

The invention discloses a water, fertilizer, air and heat precision irrigation control integrated machine which comprises a main water channel, a hot water channel, an air channel, a fertilizer channel, a detection circuit and a controller. Wherein the detection circuit is communicated with the solenoid valve of the liquid to he detected and the electrode fusion detection device, so as to realize on-line detection of the concentration of the mixed liquid fertilizer. The air channel mainly includes two parallel air channels of micro-nano bubble generator and ozone disinfection device. The ARM controller uses soft-sensing modeling of artificial intelligence technology to detect and control the concentration, EC and PH value of mixed solution on-line, and complete the intelligent control and management of water, fertilizer, air and heat. The invention has the advantages of reasonable design, good stability and reliability of equipment and high intelligent degree and improves irrigation efficiency.

Description

DESCRIPTION Water, fertilizer. air and heat precision irrigation control integrated machine

TECHNICAL FIELD The present invention belongs to the technical field of agriculture, in particular refers to a water, fertilizer, air and heat precision irrigation control integrated machine.

BACKGROUND Water-tertilizer-air-heat integration irrigation is an irrigation method in which fertilizer liquid and air enter irrigation area together with hot water. It is a new technology combining fertilization technology. trrigation technology. air generation technology and heating technology. It is the product of the combination of precise fertilization and precise irrigation. and realizes the simultaneous development of water, fertilizer, air and heat. That is to say. while irrigating water and fertilizer, they arc uniformly applied near the root system according to the requirements ol nutrients and environmental temperature at various stages ol crop growth. and are directly absorbed and utilized by the root system. The advantages of water-lertilizer-air-heat irrigation are uniform and accurate fertilization, sufficient oxygen supply to roots. proper temperature and difficulty in root rot. The integrated system of water, fertilizer, air and heat can control parameters such as irrigation amount. lertilization amount, oxygen concentration and environmental temperature stably and intelligently. thus improving the utilization rate of waler. fertilizer, air and heat, effectively reducing environmental pollution and increasing crop vield.

Crop precision control irrigation technology rose in the late 1980s, adopting automatic control technology, adopting the most accurate irrigation facilities to carry out strict and effective fertilization and irrigation for crops according to the needs of the normal growth process of crops, so as to ensure the normal growth of crops and realize the irrigation technology with high yield, high quality, high efficiency, water saving and accurate fertilizer ratio. On-line inspection technology improves the efficiency and precision of fertilizer inspection, and the information transmission with the control system realizes the highly intelligent degree of precision irrigation. The precision control technology of agricultural high-efficiency water fertilization closely follows the development of international modern precision irrigation agricultural high technology, aiming at improving the comprehensive utilization rate and efficiency of agricultural water and fertilizer, leading the development of modern precision irrigation agricultural technology in China, and developing key technologies and major products in the forefront of agricultural precision irrigation based on the life and health of crops. so as to realize the high-cfficiency precision control of the whole agricultural system.

SUMMARY In view of the problems existing in the existing technologies, the invention provides a water, fertilizer, air and heat precision irrigation control integrated machine, which can realize automatic water, fertilizer. air and heat proportioning and on-line real-time detection, transmission and control of mixed solution concentration by using a controller, reduce the cost of the utilization system, and has the advantages of small and easy structure, simple and convenient operation, high intelligent degree and easy popularization and use.

The invention is realize by the following technical scheme: The water, fertilizer. air and heat precision irrigation control integrated machine comprises a main water channel, a hot water channel, an air channel, a fertilizer channel, an electrode fusion detection device and a controller. The water source enters the water, fertilizer, air and heat precision irrigation control integrated machine through the main water channel, the control system detects the water flow signal, automatically calculates the water and fertilizer concentration ratio, oxygen content value, ozone content value and water temperature value according to the system expert decision-making method in different growth periods of crops. and starts the water channel solenoid valve, mixed liquid solenoid valve, fertilizer pump, micro-nano bubble generator. air electronic valve, ozone disinfection device, ozone electronic valve, heating device and heating solenoid valve. Mix to form mixed liquid of water, fertilizer, air and heat, enter the detection circuit, open the solenoid valve of the liquid to be detected, check and feed back the water and fertilizer concentration value on-line and in real time through sensors, electrodes and soft-sensing technology, and manage the equipment systematically. The water and fertilizer concentration ratio, oxygen content value, ozone content value and water temperature value meet the expert data values, and continue to implement irrigation with one machine. If the data do not match, adjust the pump flow rate through the governor, so as to realize precision control and detection. and provide crops with different periods. Compared with the existing technologies. the invention has the following beneficial technical effects: According to the invention. the on-line detection of the concentration of the crop fertilizer liquid can be realized through the integrated machine, and the concentration can be accurately controlled and monitored in real time. Through the system based on soft- sensing technology with artificial intelligence algorithm as the core. the measurement and prediction of difficult-to-measure components in fertilizer liquid are realized. At the same time. micro-nano bubbles with a diameter of less than | micron are attached with irrigation water to form micro-nano bubble water, which can prevent the loss of effective air and the decrease of oxygen content. and can improve the oxygen content of crop rhizosphere, and its unique electrification, oxygenation and sterilization make it have special biological and physiological activities. As the heal source or heat sink of irrigation water. the heating device changes the temperature field distribution of irrigation water, affects the water environment to a certain extent, improves the dissolution effect of water and fertilizer, improves the oxygen content of oxygen in hydrothermal environment. promotes the growth and development of plant roots, and further increases the yield, improves the utilization efficiency of water and fertilizer. and reduces the pollution to soil and environment.

DESCRIPTION OF THE FIGURLS Fig. 1 is a block diagram of the pipeline structure described in the embodiment of the present invention.

Fig. 2 is a block diagram of the control structure described in the embodiment of the present invention. Wherein: main water channel 1, hot water channel 3, hot water solenoid valve 4, water channel solenoid valve 5, heating device 6, temperature meter 7, controller 8, air flow meter 9, air electronic valve 10, micro-nano bubble generator 11, ozone disinfection device 12, ozone electronic valve 13, ozone flow meter 14, air channel 15, fertilizer channel 16, liquid to be measured solenoid valve 17. mixed liquid solenoid valve 18, electrode fusion detection device 19, fertilizer flow meter 20, pressure gauge 21, fertilizer pump 23, mixed liquid outlet channel 24, fertilizer liquid tank 26, fertilizer liquid tank 28, fertilizer liquid tank 30, fertilizer liquid tank 32, fertilizer liquid solenoid valve 25, fertilizer liquid solenoid valve 27, fertilizer liquid solenoid valve 29 and fertilizer liquid solenoid valve 31.

DESCRIPTION OF THE INVENTION The following is a further detailed description of the present invention with specific embodiments, which is an explanation of the present invention but not a limitation. The invention discloses a water, fertilizer, air and heat precision irrigation control integrated machine, which comprises the main water channel |, the hot water channel 3, the fertilizer channel 16, the air channel 15, the electrode fusion detection device 19 and the controller 8, wherein the main water channel ! is communicated with the filter 2, the water channel solenoid valve 5 and the hot water channel 3 in sequence. The hot water channel 3 connected in parallel with the water channel solenoid valve 5 is communicated with the hot water solenoid valve 4, the heating device 6 and the temperature meter 7 in sequence. The fertilizer channel 16 is sequentially provided with the fertilizer channel flow meter 20, the fertilizer channel filter 22, the fertilizer pump 23. four fertilizer channels and four communicated fertilizer liquid tanks 26, 28, 30 and 32 which respectively contain nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and trace fertitizer. The air channel 15 includes two parallel channels, one of which is connected with the micro-nano bubble generator 11, the air electronic valve 10 and the air flow meter 9 in turn, and the other is connected with the ozone sterilizing device 12, the ozone electronic valve t3 and the ozone flow meter 14 in turn. The liquid solenoid valve to be detected 17 and the clectrode fusion detection device 19 are sequentially arranged on a fertilizer liquid detection channel connected in parallel with the mixed liquid solenoid valve. After the water, fertilizer, air and heat are fused, they are automatically controlled and selected by the controller, and then pass through the mixed liquid solenoid valve 18 and the pressure meter 21, and then are discharged from the mixed liquid outlet channel 24, connected with the external irrigation pipeline and led to the roots of plants.

Among them, the hot water channel 3, the fertilizer channel 16 and the air channel [5 are independent and only communicate with the main water channel 1. The heating device 6, ozone disinfection device 12, micro-nano bubble generator 11, electrode fusion detection device 19, all solenoid valves, flow meters and fertilizer pump 23 are respectively connected with controlier 8.

The hot water channel 3 can be switched and controlled by the hot water solenoid valve 4 communicated with the main water channel 1 to realize water channel heating. The controller 8 starts the heating device 6. instantly heats it to the temperature of 38°C displayed by the temperature meter 7, and connects with the main water channel 1 to form a hot water optional circuit. The four fertilizer liquid channels on the fertilizer channel 16 include four fertilizer liquid tanks 26, 28, 30 and 32 for nitrogen fertilizer. phosphate fertilizer. potassium fertilizer and trace clement fertilizer, and corresponding fertilizer liquid solenoid valves 25, 27, 29 and 31 connected with the controller 8 are respectively installed at the outlets of the four fertilizer liquid tanks. The fertilizer liquid solenoid valves 25, 27, 29 and 31 at the outlet of the fertilizer liquid channel and the fertilizer pump 23 are all connected with the controller 8, and are automatically started after data screening by the controller 8. so as to realize independent fertilizer liquid proportioning. One of the air channels in the air channel 15 supplies oxygen to the roots of plants. and micro-nano air is mainly generated by the explosion of the micro-nano bubble generator

11. which is dissolved in the aqueous solution in the main water channel | through the air channel 15 to form bubbles. which are transported to the roots of plants along with the mixed solution outlet channel 24, The other air channel in the air channel 15 is to disinfect and sterilize plant roots to prevent root rot. Ozone is mainly generated by the ozone disinfection device 12, and is dissolved in the water solution in the main water channel | through the air channel, and delivered to the plant roots for disinfection and sterilization along with the mixed solution outlet channel 24.

The electrode fusion detection device 19 mainly comprises an conductivity (EC) electrode. a pH clectrode and an electrode for detecting potassium ions and nitrate ions in the fertilizer solution, and is connected with the controller 8, and the concentration value of the detected mixed solution is fed back to the controller. and the controller 8 compares the concentration ratio, automatically adjusts and realizes real-time monitoring. The mixed solution concentration is monitored in real time. and the mixed solution in the system is injected into the electrode fusion detection device 19 by opening the solenoid valve 17 of the liquid to be detected. so as to realize on-line detection of the concentration of nitrogen fertilizer N, phosphorus fertilizer P. potassium fertilizer K and trace fertilizer in the mixed solution, and the measured EC and PH values. The P concentration of phosphate fertilizer in mixed solution can be detected, which cannot be measured directly by clectrodes. and can be realized by soft-sensing technology. Controller 8 is an ARM- based control system, which mainly completes the control and detection functions of water, fertilizer, air and heat precision irrigation control integrated machine.

Specifically, as shown in Fig. 1, the invention comprises a main water channel |. a hot water channel 3. a fertilizer channel 16, an air channel 15, an electrode fusion detection device 19 and a controller 8. wherein the main water channel 1 is communicated with a filter 2. a water channel solenoid valve 5, and the hot water channel is communicated with a hot water solenoid valve 4, a heating device 6 and a temperature meter 7 in turn. The four fertilizer channels are nitrogen fertilizer. phosphate fertilizer, potassium fertilizer and trace fertilizer, and the four fertilizer tanks 26, 28, 30 and 32 are communicated with cach other. The two channels on the air channel 15 are sequentially provided with a micro-nano bubble generator EI, an air electronic valve 10, an air flow meter 9, an ozone disinfection device 12, an ozone electronic valve 13 and an ozone flow meter 14, and a liquid solenoid valve to be detected 17, an electrode fusion detection device 19 and water and fertilizer are sequentially arranged on the fertilizer liquid detection channel.

After combining water, fertilizer, air and heat, and after automatically controlled and selected by the controller, and then passed through the mixed liquid solenoid valve 18 and detected by the pressure gauge 2}, and then discharged from the mixed liquid outlet channel 24 and connected with the external irrigation pipeline. ‘The micro-nano bubble generator 11 and the ozone disinfection device 12 in the air channel 15 of the present invention respectively gencrate micro-nano air and ozone, which are dissolved in the aqueous solution in the main water channel through the air channel to form bubbles, which are transported to the roots of plants along with the outlet channel of the mixed solution, thus realizing oxygen supply and disinfection.

The electrode fusion detection device 19 of the present invention mainly includes EC, PH electrodes and electrodes for detecting potassium ions and nitrate ions in the fertilizer solution, and is connected with the controller, and the detected concentration value of the mixed solution is fed back to the controller, and the controller compares the concentration ratio and automatically adjusts, so as to realize on-line detection of the concentration of nitrogen fertilizer N. phosphate fertilizer P, potassium fertilizer K and trace fertilizer in the mixed solution, and the measuring of EC and PH values.

With reference to Fig. 2, the core of the present invention is Cortex-M3 chip in ARM, which is a leading 32-bit processor in the industry. with high performance and low dynamic power consumption.

It can provide up to 240 system interrupts with independent priority. dynamic resct of priority and integrated system clock, and can efficiently handle multiple I/O channels and protocol standards.

The controller should control and detect 4 sets of devices, control 11 sets of solenoid valves, monitor 4 sets of metering sensor signals, and complete the intelligent management of water, fertilizer. air and heat.

The clectrode fusion detection device 19 of the present invention detects the P concentration of mixed solution phosphate fertilizer, which cannot be directly measured because there is no corresponding phosphate ion electrode.

The soft-sensing technology is adopted, which is based on antagonism and assistance among various component ions required for crop growth.

The sample data is modeled by using artificial intelligence technologies such as neural network, support vector machine and extreme learning machine. ‘The actual measured concentration value is compared with the existing sample standard gradient cross data concentration, and the accurate measurement of phosphate fertilizer concentration is completed.

The realization is accomplished by ARM system.

According to the invention, ARM control and frequency conversion adjustment technology are combined, so that the precise proportion and supply of water, fertilizer, air and heat are realized, the irrigation efficiency and precision are greatly improved, and the integrated machine is small in size, easy to move and operate. and reduces the cost.

Although the embodiments of the present invention have been shown and described, it should be understood by those of ordinary technicians in the field that various changes. modifications, substitutions and transformations can be made to these embodiments without departing from the principles and spirit of the present invention. and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. i?

   CLAIMS |. A water, fertilizer. air and heat precision irrigation control integrated machine, characterized by comprising a main water channel |, a hot water channel 3, an air channel 15, a fertilizer channel 16, a detection circuit 24 and a controller 8; the main water channel 1 is sequentially provided with a water channel solenoid valve 5, a mixed liquid solenoid valve 18 and a pressure gauge 21: the end of the main water channel 1 is connected with an external irrigation pipeline through a mixed liquid outlet channel 24 and is led to the roots of plants; the hot water channel 3 is connected in parallel with two ends of a water channel solenoid valve 5; the hot water channel 3 comprises a hot water solenoid valve 4, a heating device 6 and a temperature meter 7 which are sequentially communicated: the air channel 15 is communicated with the main water channel 1 between the downstream of the hot water channel 3 and the mixed liquid solenoid valve 18; the input end of the air channel 15 includes two parallel air channels, and one air channel is provided with a micro-nano bubble generator 11, an air electronic valve 10 and an air flow meter 9 for supplying oxygen to plant roots: the other air channel is provided with an ozone disinfection device 12. an ozone electronic valve 13 and an ozone flow meter 14, which are used for generating ozone for disinfection and sterilization of plant roots; the fertilizer channel 16 is communicated and arranged on the main water channel | between the downstream of the hot water channel 3 and the mixed liquid solenoid valve 18; the fertilizer channel 16 is provided with a fertilizer channel flow meter 20, a fertilizer pump 23 and four fertilizer liquid channels connected in parallel; cach fertilizer liquid channel is respectively provided with a fertilizer liquid tank and a fertilizer liquid solenoid valve, and four fertilizer liquid tanks are respectively filled with nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and trace clement fertilizer; the detection circuit is connected in parallel with both ends of the mixed liquid solenoid valve 18; the detection circuit comprises an solenoid valve 17 of the liquid to be detected and an electrode fusion detection device 19 which are sequentially communicated; the clectrode fusion detection device 19 adopts a plurality of sensors and electrodes to construct a sensing multi-fusion detection device, which is used for on-line detecting the concentrations of nitrogen fertilizer. phosphate fertilizer, potassium fertilizer and trace fertilizer in the mixed solution. measuring EC value and PH value, and transmitting detection signals and data to the integrated machine control core ARM control unit; the input end of the controller 8 are respectively connected with a temperature meter 7, an air flow meter 9, an ozone flow meter 14, a fertilizer flow meter 20. a pressure gauge 21 and an electrode fusion detection device 19; the output end is connected with the heating device 6, the micro-nano bubble generator 11. the ozone sterilizing device 12, the fertilizer pump 23 and all solenoid valves.
2. 2. The water, fertilizer, air and heat precision irrigation control integrated machine according to claim 1, characterized in that a filter 2 is arranged on the main water channel | upstream of the water channel solenoid valve 5.
3. 3. The water, fertilizer, air and heat precision irrigation control integrated machine according to claim |. characterized in that a fertilizer channel filter 22 is arranged on the fertilizer channel 16 between the fertilizer channel flow meter 20 and the fertilizer pump

   23.
4. 4. The water, fertilizer, air and heat precision irrigation contro! integrated machine according to claim |, characterized in that the electrode fusion detection device 19 needs to establish a mathematical correlation model and a prediction model of water and fertilizer liquid concentration, and can detect, calculate and measure the concentration of nitrogen, phosphorus and potassium (KNP), and the hardware includes conductivity (EC) electrodes, pH electrodes and clectrodes for detecting potassium ions and nitrate ions in fertilizer liquid; the output end of that electrode fusion detection device 19 is connected with the controller 8, and the concentration value of each fertilize solution in the obtained mixed solution is fed back and output to the controller 8, and the control 8 compares the set concentration ratio corresponding to each fertilizer solution and controls the solenoid valves on the corresponding fertilizer solution channels respectively; the measurement of phosphate fertilizer is based on antagonism and assistance among various component ions necded by crop growth; the sample data is modeled by artificial intelligence techniques such as neural network, support vector machine and extreme learning machine; the actual measured concentration value is compared with the existing sample standard gradient cross data concentration, and the accurate measurement of phosphate fertilizer concentration is completed.

   F5
5. 5. The water, fertilizer, air and heat precision irrigation control integrated machine according to claim 1, characterized in that the controller 8 adopts Cortex-M3 chip processor of ARM.
6. 6. The water. fertilizer. air and heat precision irrigation control integrated machine according to claim |, characterized in that the controller 8 controls the fertilizer pump 23 according to the collected data of the fertilizer flow meter 20.
7. 7. The water, fertilizer, air and heat precision irrigation control integrated machine according to claim 1, characterized in that the controller 8 controls the heating device 6 and the hot water solenoid valve 4 according to the collected data of the temperature meter 7.
8. 8. The water, fertilizer, air and heat preciston irrigation control integrated machine according to claim 1, characterized in that the controller 8 controls the micro-nano bubble generator 11 and the air electronic valve 10 according to the collected data of the air flow meter 9.
9. 9. The integrated water, fertilizer. air and heat precision irrigation control machine according to claim |. wherein the controller 8 controls the ozone disinfection device 12 and the ozone electronic valve 13 according to the collected data of the ozone flow meter 14,