Intelligent control device and method for precise micro-irrigation of crops

Abstract

The invention relates to an intelligent control device and method for precise micro-irrigation of crops. The bottom of the collecting and distributing integrated device is communicated with a crop root buried infiltrating irrigation pipe pre-buried in soil, an air temperature and humidity collecting probe is arranged at the top of a crop stem and leaf sprinkling irrigation pipe, and a soil root moisture collecting probe is arranged at the bottom of the crop root buried infiltrating irrigation pipe. The air temperature and humidity collecting probe and the soil root moisture collecting probe are connected with the collecting and distributing integrated device, the collecting and distributing integrated device is connected with the collecting controller through a wire, the collecting controller is connected with the control host, and the control host is connected with the water pump and the water purifier. The defect that a traditional single irrigation mode is closed through multiple irrigation modes is overcome, meanwhile, it is guaranteed that the failure rate is reduced during equipment operation, and the overall operation stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water-saving irrigation, in particular to a crop precision micro-irrigation intelligent control device and method. BACKGROUND

[0002] Under the background of water-saving intelligent irrigation, precision micro-irrigation technology has become an important innovative means for agriculture to cope with water resource shortage and improve production efficiency. The traditional irrigation mode has the following disadvantages: first, the traditional irrigation method relies on manual judgment, and excessive or insufficient irrigation causes water resource waste, soil compaction, and fertilizer loss. Second, some drip irrigation technologies have appeared on the market, which can achieve water-saving effect, but the equipment lacks dynamic adjustment capability and is difficult to adapt to different and complex climate irrigation needs. Third, the traditional irrigation technology has the problems of unreasonable water resource allocation and poor regional adaptability. Single irrigation method and irrigation equipment cannot meet the needs of complex crop planting types and environment and soil water demand, and can only implement single and universal irrigation, which still has the problem of water resource waste.

[0003] In summary, the present application provides a crop precision micro-irrigation intelligent control device and method with simple structure, convenient operation, high intelligence, obvious water-saving effect, dynamic monitoring according to crop root water demand, irrigation mode and irrigation water adjustment according to soil moisture condition and external environment, temperature and climate, and different irrigation water for crop stem, leaf and root according to crop growth stage, simple and easy-to-operate method, and wide market prospect. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a crop precision micro-irrigation intelligent control device and method with simple structure, convenient operation, high intelligence, obvious water-saving effect, dynamic monitoring according to crop root water demand, irrigation mode and irrigation water adjustment according to soil moisture condition and external environment, temperature and climate, and different irrigation water for crop stem, leaf and root according to crop growth stage, simple and easy-to-operate method, and wide market prospect.

[0005] The technical scheme of the present application is implemented as follows: a crop precision micro-irrigation intelligent control device, comprising an irrigation main pipeline, a water pump and a water purifier connected with the irrigation main pipeline, a branch pipeline communicated with the irrigation main pipeline, a collecting and shunting integrated device communicated with the branch pipeline, a crop stem and leaf sprinkling pipeline communicated with the top of the collecting and shunting integrated device, a crop root buried infiltration irrigation pipeline communicated with the bottom of the collecting and shunting integrated device and pre-buried in soil, an air temperature and humidity collecting probe arranged at the top of the crop stem and leaf sprinkling pipeline, a soil root moisture collecting probe arranged at the bottom of the crop root buried infiltration irrigation pipeline, the air temperature and humidity collecting probe and the soil root moisture collecting probe connected with the collecting and shunting integrated device, the collecting and shunting integrated device connected with a collection controller through wires, the collection controller connected with a control host, and the control host connected with the water pump and the water purifier.

[0006] The collecting and shunting integrated device comprises a water quantity shunting box and a data collection box, the water quantity shunting box is internally provided with a water inlet pipe communicated with the branch pipeline, an upper water outlet pipe communicated with the crop stem and leaf sprinkling pipeline and a lower water outlet pipe communicated with the crop root buried infiltration irrigation pipeline, the upper water outlet pipe and the lower water outlet pipe are respectively provided with first and second linkage flaps, the first and second linkage flaps are respectively connected with a linkage block arranged in the inner cavity of the water quantity shunting box through transmission shafts and a staggered transmission shaft, the linkage block is connected with a sliding power assembly, the data collection box is internally provided with a single-chip microcomputer, a temperature and humidity collector connected with the air temperature and humidity collecting probe and a soil humidity collector connected with the soil root moisture collecting probe, and the single-chip microcomputer is connected with the collection controller through data back-and-forth wires.

[0007] The branch pipeline is a soft pipe made of soft plastic and having a diameter not greater than one tenth of the diameter of the irrigation main pipeline, and one end of the branch pipeline is fixedly connected with the irrigation main pipeline.

[0008] The top of the water quantity shunting box is fixedly connected with the crop stem and leaf sprinkling pipeline, the crop stem and leaf sprinkling pipeline is a round pipe, the upper water outlet pipe is a square pipe, an upper transition layer is arranged between the upper water outlet pipe and the crop stem and leaf sprinkling pipeline, the water inlet pipe is a round pipe with an inner diameter matched with the outer diameter of the branch pipeline, the branch pipeline is movably connected with the water inlet pipe, at least one electromagnetic valve nozzle is arranged on the crop stem and leaf sprinkling pipeline, the electromagnetic valve nozzle is connected with the single-chip microcomputer through upper wires, the temperature and humidity collector is connected with the air temperature and humidity collecting probe through wires, the bottom of the water quantity shunting box is fixedly connected with the crop root buried infiltration irrigation pipeline, the crop root buried infiltration irrigation pipeline is a round pipe, the lower water outlet pipe is a square pipe, a lower transition layer is arranged between the lower water outlet pipe and the crop root buried infiltration irrigation pipeline, at least one anti-blocking water outlet is arranged on the crop root buried infiltration irrigation pipeline, and the soil humidity collector is connected with the soil root moisture collecting probe through lower anti-corrosion wires.

[0009] The upper water outlet pipe is provided with an upper gate penetrating hole on the side facing the data acquisition box, and an upper waterproof sealing element is arranged in the upper gate penetrating hole; the inner section of the first linkage gate is sleeved in the upper waterproof sealing element, and the length of the first linkage gate is the sum of the inner diameter length of the upper water outlet pipe and the thickness of the upper water outlet pipe.

[0010] The lower water outlet pipe is provided with a misaligned transmission shaft penetrating hole on the side facing the data acquisition box, and a lower first waterproof sealing element is arranged in the misaligned transmission shaft penetrating hole; the inner end of the misaligned transmission shaft is sleeved in the lower first waterproof sealing element; the lower water outlet pipe is provided with a lower gate penetrating hole on the side away from the data acquisition box, and a lower second waterproof sealing element is arranged in the lower gate penetrating hole; and the outer end of the second linkage gate is sleeved in the second waterproof sealing element.

[0011] The length of the transmission shaft is not greater than the length of the misaligned transmission shaft, the length of the misaligned transmission shaft is equal to the sum of the inner diameter length of the lower water outlet pipe and the thickness of the lower water outlet pipe, the transmission shaft is always located outside the upper water outlet pipe, and the misaligned transmission shaft is located inside the lower water outlet pipe or outside the side facing the data acquisition box under the driving of the linkage block.

[0012] The first linkage gate and the second linkage gate are equal in shape and size; the first linkage gate is located inside the upper water outlet pipe or outside the side facing the data acquisition box under the driving of the linkage block; the second linkage gate is located inside the lower water outlet pipe or outside the side away from the data acquisition box under the driving of the linkage block; and the distance between the top of the first linkage gate and the bottom of the second linkage gate is not greater than the length of the linkage block.

[0013] The linkage block is a rectangular block structure, limit slide rails are symmetrically arranged in the water volume distribution box inner cavities on the upper and lower sides of the linkage block, a sliding power assembly is arranged in the limit slide rails, the sliding power assembly comprises a motor, the output end of the motor is fixedly connected with a screw rod, the linkage block is sleeved on the outer side of the screw rod, an inner thread through hole matched with the outer thread layer of the screw rod is formed in the central position of the linkage block, and the motor is connected with a single-chip microcomputer through wires.

[0014] A precision micro-irrigation intelligent control method of a crop precision micro-irrigation intelligent control device, the method comprising the following steps:

[0015] When irrigation work needs to be performed on the stem and leaf part of crops, the first linkage gate is gradually removed from the inner cavity of the upper water outlet pipe towards the motor, and at the same time, the second linkage gate is gradually moved into the lower water outlet pipe from the outer side of the lower water outlet pipe towards the motor, the purified irrigation water source enters the crop stem and leaf sprinkler pipe, and corresponding electromagnetic valve nozzles are selected according to the growth height of crops to perform precision sprinkling irrigation work on the stem and leaf part of crops.

[0016] When irrigation work needs to be carried out on the roots of crops, the first linkage gate piece is gradually moved into the inner cavity of the upper water outlet pipe from the outside of the upper water outlet pipe, and at the same time, the second linkage gate piece is gradually moved out from the inner cavity of the lower water outlet pipe towards the direction away from the motor, and the purified irrigation water source is used for the buried seepage irrigation pipe of the roots of crops, and is output through the anti-blocking water outlet to implement precision buried irrigation work on the roots of crops.

[0017] When irrigation work needs to be carried out on the stems and leaves and roots of crops, the first linkage gate piece is partially moved out from the inner cavity of the upper water outlet pipe towards the direction of the motor, and at the same time, the second linkage gate piece is partially moved into the inner cavity of the lower water outlet pipe towards the direction of the motor, and the purified irrigation water source enters the stem and leaf sprinkling pipe of crops and the buried seepage irrigation pipe of the roots of crops, and according to the growth height of crops, corresponding electromagnetic valve nozzles are selected to implement precision sprinkling irrigation work on the stem and leaf parts of crops, and at the same time, the anti-blocking water outlet is output to implement precision buried irrigation work on the roots of crops.

[0018] The present application has the following positive effects:

[0019] 1、The crop precision micro-irrigation intelligent control device collects the root soil moisture, stem and leaf air temperature and humidity information of crops through the control host, and when the irrigation demand is reached, the motor in the collection and shunting integrated device is driven by the control host, and then different linkage gate pieces are opened and closed, so that the upper water outlet pipe and the lower water outlet pipe are connected and closed, the overall structure is simple, the control linkage mode is effectively controllable, and compared with the traditional manual irrigation, the overall water saving efficiency is effectively improved.

[0020] 2、The crop precision micro-irrigation intelligent control device implements up-down shunting on the irrigation water source delivered by the branch pipeline through the upper water outlet pipe and the lower water outlet pipe, and implements different irrigation modes on the roots and stem and leaf parts of crops, through this irrigation design, the fine control of irrigation work can be realized, the water resource waste caused by invalid irrigation can be avoided, and different crop water demand can be responded to, and the differentiated irrigation of the roots and stem and leaf parts is implemented, the root water supplement can avoid the transpiration of irrigation water source under extreme weather, and the stem and leaf water supplement can achieve the absorption of water on the leaf surface in the early morning or sunset period, so as to avoid the water resource waste of the spray pipe work in the high temperature period and the period with high light intensity.

[0021] 3, The crop intelligent control device for micro-irrigation quantity, through the installation of branch pipes on the irrigation main pipe, then integrated connection with the water quantity shunt box and data acquisition box which can be installed flexibly, the acquisition shunt integrated equipment is a device that can be installed flexibly alone, not only can realize the flexible selection of position, but also can be controlled according to the installation demand, at the same time, when the single acquisition shunt integrated equipment fails, it can be repaired and replaced, without affecting the use of other acquisition shunt integrated equipment, the acquisition shunt integrated equipment contains two functions of shunt control and data acquisition, through the setting in the upper position of the ground, the near-end connection of the air temperature and humidity acquisition probe and the soil root water acquisition probe is realized, and the uplink and downlink transportation of the irrigation water source in the middle position is also convenient. The deficiencies of traditional single irrigation mode are overcome through multiple irrigation modes, while the failure rate of equipment operation is reduced, and the stability of overall operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the present application.

[0023] Figure 2 It is the acquisition shunt integrated main equipment structure schematic diagram of the present application.

[0024] Figure 3 It is the acquisition shunt integrated equipment structure schematic diagram of the present application.

[0025] Figure 4 It is the water quantity shunt box and data acquisition box internal structure schematic diagram of the present application.

[0026] Figure 5 It is the water quantity shunt box and data acquisition box internal structure schematic diagram of the present application.

[0027] Figure 6 It is the upper water outlet pipe section view structure schematic diagram of the present application.

[0028] Figure 7 It is the upper water outlet pipe section view structure schematic diagram of the present application.

[0029] Figure 8 It is the first linkage gate piece open state structure schematic diagram of the present application.

[0030] Figure 9 It is the lower water outlet pipe section view structure schematic diagram of the present application.

[0031] Figure 10 It is the lower water outlet pipe section view structure schematic diagram of the present application.

[0032] Figure 11 It is the second linkage gate piece closed state structure schematic diagram of the present application. DETAILED DESCRIPTION

[0033] As Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10, 11, an intelligent control device for precision micro-irrigation of crops, comprising an irrigation main pipeline 5, a water pump 2 and a water purifier 3 connected with the irrigation main pipeline 5, a branch pipeline 6 communicated with the irrigation main pipeline 5, the branch pipeline 6 being communicated with a collection and shunting integrated device, the top of the collection and shunting integrated device being communicated with a crop stem and leaf sprinkling pipeline 8, the bottom of the collection and shunting integrated device being communicated with a crop root buried infiltration irrigation pipeline 11 embedded in the soil, the top of the crop stem and leaf sprinkling pipeline 8 being provided with an air temperature and humidity collection probe 10, the bottom of the crop root buried infiltration irrigation pipeline 11 being provided with a soil root water collection probe 13, the air temperature and humidity collection probe 10 and the soil root water collection probe 13 being connected with the collection and shunting integrated device, the collection and shunting integrated device being connected with a collection controller 4 through wires, the collection controller 4 being connected with a control host 1, and the control host 1 being connected with the water pump 2 and the water purifier 3. The collection and shunting integrated device comprises a water quantity shunting box 16 and a data collection box 17, the water quantity shunting box 16 being provided with an inlet pipe 18 communicated with the branch pipeline 6, an upper outlet pipe 20 communicated with the crop stem and leaf sprinkling pipeline 8, and a lower outlet pipe 21 communicated with the crop root buried infiltration irrigation pipeline 11, the upper outlet pipe 20 and the lower outlet pipe 21 being respectively provided with a first linkage gate piece 22 and a second linkage gate piece 23, the first linkage gate piece 22 and the second linkage gate piece 23 being respectively connected with a linkage block 25 arranged in the inner cavity of the water quantity shunting box 16 through a transmission shaft 37 and a staggered transmission shaft 28, and the linkage block 25 being connected with a sliding power assembly, the data collection box 17 being provided with a single-chip microcomputer 31, a temperature and humidity collector 29 connected with the air temperature and humidity collection probe 10, and a soil humidity collector 30 connected with the soil root water collection probe 13, and the single-chip microcomputer 31 being connected with the collection controller 4 through data back-and-forth wires 7.

[0034] In specific use, the collection and shunting integrated device is a recyclable flexible installation component of the present application, which can be selected in number according to the planting density of crops and the irrigation radiation area. The irrigation main pipeline 5 is arranged in a serpentine coil shape in the area to be irrigated, the branch pipeline 6 is separately punched and installed after the irrigation main pipeline is laid, the number of the branch pipeline 6 is consistent with the number of the collection and shunting integrated device calculated in advance, the crop stem and leaf sprinkling pipeline 8 is responsible for the sprinkling irrigation work of the stem and leaf part of crops, the length thereof is selected and adjusted according to the height of the planted crops, the crop root buried infiltration irrigation pipeline 11 is responsible for the direct infiltration irrigation of the root part of crops, the air temperature and humidity collection probe 10 can perform data collection work on the temperature and humidity of the production environment of crops, and the soil root water collection probe 13 can perform data collection on the water requirement of the soil of the root part of crops.

[0035] The integrated water flow splitting and data collecting device is composed of two fixedly connected box bodies, the water flow splitting box 16 and the data collecting box 17 are fixedly connected in the middle part as an integrated structure, the two box bodies have independent and mutually unconnected internal spaces, the water flow splitting box 16 is used for implementing the splitting operation on the irrigation water source transported by the branch pipeline 6, the flow direction of the irrigation water source after splitting is upward transportation, downward transportation or simultaneous upward and downward transportation. The water inlet pipe 18 is connected to the water outlet end of the branch pipeline, and is responsible for transporting the water source to the upper water outlet pipe 20 or the lower water outlet pipe 21. The first linkage gate piece 22 and the second linkage gate piece 23 are respectively arranged in the middle part of the upper water outlet pipe 20 and the lower water outlet pipe 21, and the upper water outlet pipe 20 and the lower water outlet pipe 21 are wrapped in the inner cavity of the water flow splitting box 16. The linkage block 25 is used for synchronously linking the two gate pieces, and is arranged on the outer side of the upper water outlet pipe 20 and the lower water outlet pipe 21 in the direction of the single-chip microcomputer 31, and the sliding power assembly is arranged in the inner cavity of the water flow splitting box 16.

[0036] The data collecting box 17 is responsible for the installation of the data collector and the installation of the single-chip microcomputer 31, the independent waterproof cavity is provided with the single-chip microcomputer 31, the temperature and humidity collector 29 and the soil humidity collector 30, and the power driving part of the sliding power assembly is connected with the single-chip microcomputer 31 through the pre-buried lead wire. The data collecting box 17 is connected with the collecting controller 4 through the data back-and-forth lead wire 7, and the collecting controller 4 is responsible for the transmission, data collection, data uploading, data return driving command and other operations. Under the operation of the collecting controller 4, the data of the air temperature and humidity collecting probe 10 and the soil root moisture collecting probe 13 can be uploaded to the control host 1, the required demand is obtained after the operation of the control host, then the irrigation command is returned to the single-chip microcomputer 31, the power driving of the sliding power assembly is realized, and then different irrigation modes are selected to implement the operation.

[0037] The branch pipe 6 is a soft pipe made of soft plastic with a diameter not more than one tenth of the diameter of the irrigation main pipe 5, and one end of the branch pipe 6 is fixedly connected with the irrigation main pipe 5. The top of the water distribution box 16 is fixedly connected with the crop stem and leaf sprinkling pipe 8, the crop stem and leaf sprinkling pipe 8 is a round pipe, the upper water outlet pipe 20 is a square pipe, and an upper transition layer 33 is arranged between the upper water outlet pipe 20 and the crop stem and leaf sprinkling pipe 8. The water inlet pipe 18 is a round pipe with an inner diameter matched with the outer diameter of the branch pipe 6, and the branch pipe 6 is movably connected with the water inlet pipe 18. At least one electromagnetic valve nozzle 9 is arranged on the crop stem and leaf sprinkling pipe 8, the electromagnetic valve nozzle 9 is connected with the single-chip microcomputer 31 through the upper lead wire 14, and the temperature and humidity collector 29 is connected with the air temperature and humidity collection probe 10 through a lead wire. The bottom of the water distribution box 16 is fixedly connected with the crop root buried infiltration pipe 11, the crop root buried infiltration pipe 11 is a round pipe, the lower water outlet pipe 21 is a square pipe, and a lower transition layer 32 is arranged between the lower water outlet pipe 21 and the crop root buried infiltration pipe 11. At least one anti-blocking water outlet 12 is arranged on the crop root buried infiltration pipe 11, and the soil humidity collector 30 is connected with the soil root water collection probe 13 through the lower corrosion-resistant lead wire 15.

[0038] In specific use, the branch pipe 6 adopts a soft pipe structure, which can provide flexible connection operation of the water outlet end and has a certain length to facilitate connection with the water inlet pipe 18 on the outside of the water distribution box 16. During installation of the water distribution box 16, it is difficult to ensure the installation position of the water distribution box 16 due to the influence of the land ridge and the ditch. Therefore, the branch pipe 6 adopts a soft pipe, which facilitates effective connection under the premise that the longitudinal position of the water distribution box 16 can correspond to the crop root and stem and leaf.

[0039] The crop stem and leaf sprinkling pipe 8, the water distribution box 16 and the crop root buried infiltration pipe 11 are an integrated structure. As another embodiment of the application, a connecting piece can be added at the top of the upper water outlet pipe 20 and the bottom water outlet position of the lower water outlet pipe. The crop stem and leaf sprinkling pipe 8 and the crop root buried infiltration pipe 11 can adopt a movable connection mode, which facilitates transportation and turnover use. The upper and lower parts of the data collection box 17 are provided with wire passing holes, which are sealed by sealing pieces. The upper lead wire 14 and the lower corrosion-resistant lead wire 15 are respectively sleeved in the corresponding wire passing holes. Not only can the wire arrangement be realized, but also a good sealing and waterproof effect can be achieved, thereby ensuring the effective operation of the soil root water collection probe 13 and the air temperature and humidity collection probe 10.

[0040] The upper water outlet pipe 20 is provided with an upper gate penetrating hole on the side facing the data acquisition box 17, and an upper waterproof sealing member 34 is arranged in the upper gate penetrating hole. The inner section of the first linkage gate 22 is sleeved in the upper waterproof sealing member 34. The length of the first linkage gate 22 is the sum of the inner diameter length of the upper water outlet pipe 20 and the thickness of the upper water outlet pipe 20. The lower water outlet pipe 21 is provided with a staggered transmission shaft penetrating hole on the side facing the data acquisition box 17. A lower first waterproof sealing member 35 is arranged in the staggered transmission shaft penetrating hole. The inner end of the staggered transmission shaft 28 is sleeved in the lower first waterproof sealing member 35. The lower water outlet pipe 21 is provided with a lower gate penetrating hole on the side away from the data acquisition box 17. A lower second waterproof sealing member 36 is arranged in the lower gate penetrating hole. The outer end of the second linkage gate 23 is sleeved in the second waterproof sealing member 36. The inner end of the second linkage gate 23 is fixedly connected with the outer end of the staggered transmission shaft 28.

[0041] In specific use, the inner wall of the upper waterproof sealing member wraps the outer wall of the first linkage gate 22. The length of the first linkage gate 22 is greater than the inner diameter length of the upper water outlet pipe with a square cross section, so as to prevent water seepage and leakage during operation. The upper waterproof sealing member is made of wear-resistant material, which effectively ensures the opening and closing times of the first linkage gate 22 and guarantees the service life. The inner wall of the lower first waterproof sealing member 35 wraps the outer wall of the staggered transmission shaft 28 to avoid water leakage. The inner wall of the lower second waterproof sealing member 36 wraps the outer wall of the second linkage gate to prevent water seepage and leakage during operation.

[0042] The length of the transmission shaft 37 is not greater than the length of the staggered transmission shaft 28. The length of the staggered transmission shaft 28 is equal to the sum of the inner diameter length of the lower water outlet pipe 21 and the thickness of the lower water outlet pipe 21. The transmission shaft 37 is always located outside the upper water outlet pipe 20. The staggered transmission shaft 28 is located inside the lower water outlet pipe 21 or outside the side facing the data acquisition box 17 by the driving of the linkage block 25. The first linkage gate 22 and the second linkage gate 23 are equal in shape and size. The first linkage gate 22 is located inside the upper water outlet pipe 20 or outside the side facing the data acquisition box 17 by the driving of the linkage block 25. The second linkage gate 23 is located inside the lower water outlet pipe 21 or outside the side away from the data acquisition box 17 by the driving of the linkage block 25. The distance between the top of the first linkage gate 22 and the bottom of the second linkage gate 23 is not greater than the length of the linkage block 25.

[0043] In specific use, the misaligned transmission shaft 28 is located in the lower water outlet pipe 21 in the initial state, the lower water outlet pipe is in the open state in the initial state, the outer end surfaces of the transmission shaft 37 and the misaligned transmission shaft 28 connected with the linkage block 25 are flush with each other, and the transmission shaft 37 is always located outside the upper water outlet pipe 20 regardless of whether the upper water outlet pipe 20 is in the closed or open state. The two linkage gate pieces are equal in shape and size, and the upper water outlet pipe 20 and the lower water outlet pipe 21 are square tubular structures with equal diameters, so as to ensure the sealing performance of the first linkage gate piece 22 and the second linkage gate piece 23 during operation.

[0044] The linkage block 25 is a rectangular block structure, the limiting slide 24 is symmetrically arranged in the inner cavity of the water flow distribution box 16 on the upper and lower sides of the linkage block 25, the sliding power assembly is arranged in the limiting slide 24, the sliding power assembly comprises the motor 27, the output end of the motor 27 is fixedly connected with the screw rod 26, the linkage block 25 is sleeved outside the screw rod 26, an inner threaded through hole matched with the outer threaded layer of the screw rod 26 is formed in the central position of the linkage block 25, and the motor 27 is connected with the single-chip microcomputer 31 through wires.

[0045] The operation of the first linkage gate piece 22 and the second linkage gate piece 23 is realized in a synchronous manner relying on the linkage of the linkage block 25, the linkage block 25 moves horizontally relying on the movable nut principle, the moving path is horizontal movement along the length direction of the screw rod 26, and the linkage block 25 moves along the axis of the screw rod 26 in the limiting slide 24 with a square structure on the inner wall during the moving process, the linkage block 25 is away from or close to the motor 27 by using the forward and reverse rotation of the motor 27.

[0046] The precision micro-irrigation intelligent control method of the crop precision micro-irrigation intelligent control device comprises the following steps:

[0047] The air temperature and humidity and the soil humidity of the crop stem and leaf part and the crop root part are collected by the air temperature and humidity collection probe 10 and the soil root water collection probe 13, the collected data are collected by the temperature and humidity collector 29 and the soil humidity collector 30, transmitted to the single-chip microcomputer 31, transmitted to the collection controller 4 by the single-chip microcomputer 31, and fed back to the control host 1 by the collection controller 4, the control host 1 judges the irrigation demand of the crop stem and leaf part and the root part according to the data information, and transmits the control command to the single-chip microcomputer 31.

[0048] The specific control method comprises the following three modes:

[0049] Mode one: when the irrigation operation needs to be carried out on the stems and leaves of crops, in the initial state, the motor 27 is controlled to run by the single-chip microcomputer 31, and the electromagnetic valve nozzle 9 is opened. The motor 27 drives the screw rod 26 to rotate reversely, the linkage block 25 slides from the far end of the screw rod 26 to the motor 27 direction step by step, the first linkage gate piece 22 is driven by the transmission shaft 37 to move out of the inner cavity of the upper water outlet pipe 20 step by step to the motor 27 direction, and stops when the outer end surface of the first linkage gate piece 22 falls into the upper waterproof sealing piece 34. At the same time, the second linkage gate piece 23 is driven by the staggered transmission shaft 28 to move into the inner cavity of the lower water outlet pipe 21 step by step to the motor 27 direction, and stops when the outer end surface of the second linkage gate piece 23 falls into the second waterproof sealing piece 36. At this time, the water inlet pipe 18 is connected with the upper water outlet pipe 20, and the water inlet pipe 18 is closed with the lower water outlet pipe 21. The purified irrigation water source enters the crop stem and leaf sprinkler pipe 8 from the irrigation main pipe 5 through the branch pipe 6, and the corresponding electromagnetic valve nozzle 9 is selected according to the growth height of crops to carry out precision sprinkling irrigation on the stem and leaf parts of crops. The air temperature and humidity collection probe 10 dynamically uploads data during the sprinkling process, and stops the irrigation operation when the sprinkling requirement is reached.

[0050] Mode two: when the irrigation operation needs to be carried out on the roots of crops, the motor 27 is controlled to run by the single-chip microcomputer 31, and the motor 27 drives the screw rod 26 to rotate forward. The linkage block 25 slides from the motor 27 direction to the far end of the screw rod 26, and the first linkage gate piece 22 is driven by the transmission shaft 37 to move into the inner cavity of the upper water outlet pipe 20 step by step from the outer side of the upper water outlet pipe 20. When the inner end surface of the first linkage gate piece 22 falls into the upper waterproof sealing piece 34, the motor stops moving. At the same time, the second linkage gate piece 23 is driven by the staggered transmission shaft 28 to move out of the inner cavity of the lower water outlet pipe 21 step by step to the direction away from the motor 27, and stops when the inner end surface of the second linkage gate piece 23 falls into the second waterproof sealing piece 36. At this time, the water inlet pipe 18 is connected with the lower water outlet pipe 21, and the water inlet pipe 18 is closed with the upper water outlet pipe 20. The purified irrigation water source enters the crop root buried infiltration pipe 11 from the irrigation main pipe 5 through the branch pipe 6, and carries out precision buried irrigation on the roots of crops after being output through the anti-blocking water outlet 12. The soil root water collection probe 13 dynamically uploads data during the buried irrigation process, and stops the irrigation operation when the buried irrigation requirement is reached.

[0051] Mode three: when the crop stem and root irrigation operation is needed, the initial state, through the single-chip 31 control motor 27 operation and electromagnetic valve nozzle 9 open, the motor 27 drive screw 26 reverse rotation, linkage block 25 from the far end of the screw 26 gradually toward the direction of the motor 27 sliding, the first linkage gate 22 in the transmission shaft 37 driven from the upper water outlet pipe 20 cavity gradually toward the direction of the motor 27 removed half after the motor stop movement, at the same time, the second linkage gate 23 in the staggered transmission shaft 28 driven from the lower water outlet pipe 21 outside gradually toward the direction of the motor 27 moved into half after stop, at this time, the water inlet pipe 18 and the upper water outlet pipe 20 and the lower water outlet pipe 21 are connected, the purified irrigation water from the irrigation main pipeline 5 through the branch pipeline 6 into the crop stem leaf sprinkler pipe 8 and the crop root buried infiltration pipe 11, according to the crop growth height selection corresponding electromagnetic valve nozzle 9 on the crop stem and leaf part of the implementation of precision sprinkling irrigation operation, the air temperature and humidity collection probe 10 dynamic data upload in the process of sprinkling irrigation, reach the demand of sprinkling irrigation stop irrigation operation, at the same time, the purified irrigation water from the irrigation main pipeline 5 through the branch pipeline 6 into the crop root buried infiltration pipe 11, and through the anti-blocking water outlet 12 output after the implementation of precision buried irrigation operation on the crop root, the soil root water collection probe 13 dynamic data upload in the process of buried irrigation, reach the demand of buried irrigation stop irrigation operation.

[0052] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision micro-irrigation intelligent control device for crops, comprising an irrigation main pipeline (5), a water pump (2) connected to the irrigation main pipeline (5), and a water purifier (3), characterized in that: The main irrigation pipe (5) is connected to a branch pipe (6), which is connected to the integrated collection and diversion device. The top of the integrated collection and diversion device is connected to the crop stem and leaf sprinkler pipe (8), and the bottom of the integrated collection and diversion device is connected to the crop root buried drip irrigation pipe (11) pre-buried in the soil. An air temperature and humidity acquisition probe (10) is installed at the top of the crop stem and leaf sprinkler pipe (8), and a soil root moisture acquisition probe (13) is installed at the bottom of the crop root buried drip irrigation pipe (11). The air temperature and humidity acquisition probe (10) and the soil root moisture acquisition probe (13) are connected to the integrated collection and diversion device. The integrated collection and diversion device is connected to the acquisition controller (4) through a wire. The acquisition controller (4) is connected to the control host (1), and the control host (1) is connected to the water pump (2) and the water purifier (3).

2. The intelligent control device for precision micro-irrigation of crops according to claim 1, characterized in that: The integrated collection and diversion device includes a water diversion box (16) and a data acquisition box (17). The water diversion box (16) is equipped with an inlet pipe (18) connected to the branch pipe (6), an upper outlet pipe (20) connected to the crop stem and leaf sprinkler pipe (8), and a lower outlet pipe (21) connected to the crop root buried seepage irrigation pipe (11). The upper outlet pipe (20) and the lower outlet pipe (21) are respectively equipped with a first linkage valve (22) and a second linkage valve (23). (23) It is connected to the linkage block (25) in the inner cavity of the water diversion box (16) through the transmission shaft (37) and the misaligned transmission shaft (28), respectively. The linkage block (25) is connected to the sliding power component. A microcontroller (31), a temperature and humidity collector (29) connected to the air temperature and humidity collection probe (10), and a soil moisture collector (30) connected to the soil root moisture collection probe (13) are provided in the data acquisition box (17). The microcontroller (31) is connected to the acquisition controller (4) through the data return wire (7).

3. The intelligent control device for precision micro-irrigation of crops according to claim 1, characterized in that: The branch pipe (6) is a flexible hose made of soft plastic with a diameter no greater than one-tenth the diameter of the main irrigation pipe (5). One end of the branch pipe (6) is fixedly connected to the main irrigation pipe (5).

4. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The top of the water distribution box (16) is fixedly connected to the crop stem and leaf irrigation pipe (8). The crop stem and leaf irrigation pipe (8) is a round pipe, and the upper water outlet pipe (20) is a square pipe. An upper transition layer (33) is provided between the upper water outlet pipe (20) and the crop stem and leaf irrigation pipe (8). The water inlet pipe (18) is a round pipe with an inner diameter that matches the outer diameter of the branch pipe (6). The branch pipe (6) is movably connected to the water inlet pipe (18). At least one solenoid valve nozzle (9) is provided on the crop stem and leaf irrigation pipe (8). The solenoid valve nozzle (9) is connected to the microcontroller (31) through the upper wire (14). Temperature and humidity The collector (29) is connected to the air temperature and humidity acquisition probe (10) via a wire. The bottom of the water diversion box (16) is fixedly connected to the underground drip irrigation pipe (11) at the crop root. The underground drip irrigation pipe (11) at the crop root is a round pipe, and the lower water outlet pipe (21) is a square pipe. A lower transition layer (32) is provided between the lower water outlet pipe (21) and the underground drip irrigation pipe (11) at the crop root. At least one anti-clogging water outlet (12) is provided on the underground drip irrigation pipe (11) at the crop root. The soil moisture collector (30) is connected to the soil root moisture acquisition probe (13) via the lower anti-corrosion wire (15).

5. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The upper water outlet pipe (20) has an upper gate plate through hole on the side facing the data acquisition box (17). An upper waterproof seal (34) is provided in the upper gate plate through hole. The inner section of the first linkage gate plate (22) is fitted inside the upper waterproof seal (34). The length of the first linkage gate plate (22) is the sum of the inner diameter of the upper water outlet pipe (20) and the thickness of the upper water outlet pipe (20).

6. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The lower water outlet pipe (21) has a through hole for a misaligned drive shaft on the side facing the data acquisition box (17). A lower first waterproof seal (35) is provided in the through hole for the misaligned drive shaft. The inner end of the misaligned drive shaft (28) is fitted in the lower first waterproof seal (35). A lower brake plate through hole is provided on the side of the lower water outlet pipe (21) away from the data acquisition box (17). A lower second waterproof seal (36) is provided in the through hole for the lower brake plate. The outer end of the second linkage brake plate (23) is fitted in the second waterproof seal (36).

7. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The length of the drive shaft (37) is not greater than the length of the misaligned drive shaft (28). The length of the misaligned drive shaft (28) is equal to the sum of the inner diameter of the lower water outlet pipe (21) and the thickness of the lower water outlet pipe (21). The drive shaft (37) is always located outside the upper water outlet pipe (20). The misaligned drive shaft (28) is located inside the lower water outlet pipe (21) or outside the side facing the data acquisition box (17) by the drive of the linkage block (25).

8. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The first linkage gate (22) and the second linkage gate (23) are equal in shape and size. The first linkage gate (22) is located inside the upper water outlet pipe (20) or outside the side facing the data acquisition box (17) by the linkage block (25). The second linkage gate (23) is located inside the lower water outlet pipe (21) or outside the side away from the data acquisition box (17) by the linkage block (25). The distance between the top of the first linkage gate (22) and the bottom of the second linkage gate (23) is not greater than the length of the linkage block (25).

9. The intelligent control device for precision micro-irrigation of crops according to claim 2, characterized in that: The linkage block (25) is a rectangular block structure. Limiting slides (24) are symmetrically arranged in the inner cavity of the water diversion box (16) on the upper and lower sides of the linkage block (25). The sliding power component is set in the limiting slide (24). The sliding power component includes a motor (27). The output end of the motor (27) is fixedly connected to the screw (26). The linkage block (25) is fitted on the outside of the screw (26). An internal thread through hole that matches the external thread layer of the screw (26) is opened at the center of the linkage block (25). The motor (27) is connected to the microcontroller (31) through a wire.

10. A precision micro-irrigation intelligent control method for a crop precision micro-irrigation intelligent control device as described in any one of claims 1-9, characterized in that, The method is as follows: When irrigation is needed for the stems and leaves of crops, the first linkage gate (22) moves out from the inner cavity of the upper water outlet pipe (20) towards the motor (27) and at the same time, the second linkage gate (23) moves in from the outside of the lower water outlet pipe (21) towards the motor (27). The purified irrigation water enters the crop stem and leaf sprinkler pipe (8) and the corresponding solenoid valve nozzle (9) is selected according to the crop growth height to carry out precision sprinkler irrigation for the stems and leaves of crops. When irrigation is needed for the crop roots, the first linkage gate (22) is gradually moved from the outside of the upper outlet pipe (20) into the inner cavity of the upper outlet pipe (20). At the same time, the second linkage gate (23) is gradually moved out from the inner cavity of the lower outlet pipe (21) away from the motor (27). The purified irrigation water is then sent to the underground seepage irrigation pipe (11) at the crop roots and output through the anti-blocking outlet (12) to carry out precision underground irrigation for the crop roots. When irrigation is required for both the stems and leaves and the roots of the crop, the first linkage valve (22) moves out from the inner cavity of the upper water outlet pipe (20) toward the motor (27), while the second linkage valve (23) moves in from the outer side of the lower water outlet pipe (21) toward the motor (27). The purified irrigation water enters the crop stem and leaf sprinkler pipe (8) and the crop root buried seepage irrigation pipe (11). The corresponding solenoid valve nozzle (9) is selected according to the crop growth height to carry out precision sprinkler irrigation for the crop stems and leaves. At the same time, after being output through the anti-blocking outlet (12), precision buried irrigation is carried out for the crop roots.

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