CN107372050B - Progressive fixed-point accurate remote control irrigation device and method - Google Patents
Progressive fixed-point accurate remote control irrigation device and method Download PDFInfo
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- CN107372050B CN107372050B CN201710801746.6A CN201710801746A CN107372050B CN 107372050 B CN107372050 B CN 107372050B CN 201710801746 A CN201710801746 A CN 201710801746A CN 107372050 B CN107372050 B CN 107372050B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention relates to a progressive fixed-point accurate remote control irrigation device and a progressive fixed-point accurate remote control irrigation method. The invention uses the singlechip as a core main board, and has high performance and can realize various complex operations and instructions; the two sensors are arranged, so that the soil humidity of each part of the plant can be obtained more accurately; the accurate watering is realized, the soil permeability meter is simulated, the watering amount is dynamically adjusted, the gap time is reserved in the middle to wait for the infiltration of water, and then the water supplementing amount is automatically adjusted according to the updated humidity, so that the condition of no water accumulation is ensured to slowly approach to the proper humidity; the remote communication with the user side greatly improves the stability and flexibility of the system, so that the user can know the crop condition in real time, such as the abnormal condition of the device, and can send an alarm to the user in real time.
Description
Technical Field
The invention relates to the technical field of crop fixed-point irrigation, in particular to a progressive fixed-point accurate remote control irrigation device and method.
Background
At present, most of crop irrigation depends on manual operation, so that time consumption, labor consumption and cost are high, a reasonable irrigation amount and a scientific irrigation mode are difficult to master in a traditional irrigation mode, manual operation is often required, and remote control cannot be realized.
The current accurate watering scheme of solution is comparatively dead plate mostly, and is very coarse to the control and the fine setting of water yield handle, lacks the scheme of dynamic regulation and control irrigation volume to can't realize accurate irrigation. Most of automatic watering devices in the current market cannot well control daily watering quantity, especially for the situation that the daily water consumption of medium, small and miniature plants is only 4-50 g, almost no watering device can well control daily watering quantity in the daily water consumption range. The excellent automatic watering device must be provided with a function of enabling a user to adjust different watering speeds according to daily water consumption of plants, i.e. the daily water consumption must be adjustable. A watering device that does not allow the user to adjust the watering speed is not reasonable because it does not adapt to the actual needs of plant growth.
Secondly, most watering device products do not consider the understanding condition of a user on plant growth, and the single integrated watering device enables the occurrence of abnormal conditions to only wait for the user to find the abnormal conditions by himself, but can not immediately send out an abnormal report, and does not replace manual watering in a real sense.
Disclosure of Invention
The invention aims to provide a progressive fixed-point accurate remote control irrigation device and method, which are used for solving the problem that reasonable irrigation quantity cannot be mastered in current crop irrigation.
In order to achieve the above purpose, the invention discloses a progressive fixed-point accurate remote control irrigation device, which comprises a metal box body, a central controller, a humidity acquisition device, irrigation equipment, wireless communication equipment and alarm equipment, wherein the central controller is installed inside the metal box body, the humidity acquisition device, the irrigation equipment, the wireless communication equipment and the alarm equipment are respectively connected to a main board of the central controller, the humidity acquisition device comprises a first humidity sensor and a second humidity sensor, the first humidity sensor and the second humidity sensor are respectively arranged below a soil layer of an irrigation land and keep a depth difference of 10cm, the wireless communication equipment is installed at the top of the metal box body, and the alarm equipment is installed at the upper part of the outer side of the metal box body.
The first humidity sensor and the second humidity sensor are respectively arranged at the positions of 5cm to 10cm and 15 cm to 20cm below the irrigation soil layer.
According to the progressive fixed-point accurate remote control irrigation device disclosed by the invention, the tail ends of the first humidity sensor and the second humidity sensor are respectively fixed in the mounting holes on the support rod by using bolts, one end of the support rod is connected to the central controller main board, the other end of the support rod extends out of the bottom of the metal box body and stretches into the soil layer of the irrigation land, and the communication wires and the power wires of the first humidity sensor and the second humidity sensor penetrate through the center of the support rod and are connected to the central controller main board.
The progressive fixed-point accurate remote control irrigation device disclosed by the invention has the advantages that the front ends of the first humidity sensor and the second humidity sensor are provided with a plurality of probes, and the probes at the front ends of the first humidity sensor and the second humidity sensor are placed in parallel.
The invention discloses the progressive fixed-point accurate remote control irrigation device, wherein the irrigation equipment comprises: the shower nozzle comprises a water pump, a soft water pipe, a water delivery steel pipe and a shower nozzle, wherein the water pump is arranged on the ground on one side of the metal box body, the water pump is connected to a main board of the central controller, a relay switch is arranged between the water pump and the central controller, a water outlet of the water pump is connected with one end of the soft water pipe, the other end of the soft water pipe is connected to one end of the water delivery steel pipe obliquely arranged on the side face of the metal box body, and the other end of the water delivery steel pipe is connected with the shower nozzle.
According to the progressive fixed-point accurate remote control irrigation device disclosed by the invention, the shower nozzle is connected to one end of the water delivery steel pipe through the conical support, the shower nozzle is 5cm higher than soil and faces the root of crops, an electromagnetic valve is arranged at the connection position of the shower nozzle and the water delivery steel pipe, and the electromagnetic valve is connected to a main board of the central controller.
According to the progressive fixed-point accurate remote control irrigation device disclosed by the invention, the shower nozzle is a shower nozzle with uniformly distributed leakage openings, the inclination of the shower nozzle is 15 degrees, and the shower nozzle is vertically aligned with the middle ends of the probes of the first humidity sensor and the second humidity sensor.
The wireless communication equipment comprises a communication module and a wireless communication antenna, wherein the communication module is fixed on the top inside a metal box body through threads, and the bottom of the wireless communication antenna is adsorbed on the top of the metal box body through a magnet strip and is connected to the communication module in a wired mode.
The invention discloses the progressive fixed-point accurate remote control irrigation device, wherein the alarm equipment comprises an LED indicator lamp and a buzzer, and the LED indicator lamp and the buzzer are connected to a main board of a central controller.
The invention also discloses a progressive fixed-point accurate remote control irrigation method, which comprises the following steps: the central controller periodically controls the humidity acquisition equipment to acquire humidity; the first humidity sensor and the second humidity sensor which are layered under the soil layer of the irrigation land acquire the soil moisture volume X with different depths 1 And X 2 Wherein a depth difference of 10cm is maintained between the first humidity sensor and the second humidity sensor; the central controller receives the transmitted soil moisture volume X 1 And X 2 Calculating humidity area value X between 10cm depths 3 Wherein X is 3 ＝X 2 ×0.75+X 1 X 0.25; obtaining X 3 Comparing the value with the lowest value of the proper humidity range for plant cultivation; when X is 3 <When the minimum value of the plant planting proper humidity range is +0.05, the central controller turns on the relay switch to pump waterThe control circuit is closed, the water pump is started to pump out water and convey the water to the water delivery steel pipe through the soft water pipe, the electromagnetic valve at the shower nozzle is opened, and the shower nozzle sprays water for irrigation; the relay switch is controlled to irrigate according to a preset function in irrigation, wherein the preset function is a quadratic function of the anti-overflow gradual change irrigation quantity obtained based on simulation of a proper humidity range for plant planting; and the central controller controls the first humidity sensor and the second humidity sensor to acquire data after effective permeation time after the water pump is closed in a data acquisition period so as to calculate and obtain X after irrigation in real time 3 The effective permeation time is 10 times of the water pump opening time; the central controller controls the first humidity sensor, the second humidity sensor and the water pump to circularly detect humidity data and irrigation until X 3 Stopping irrigation when the humidity is close to the highest value of the proper humidity range for plant cultivation; the central controller uses X times of different time periods 3 The value is sent to the user terminal through the wireless communication equipment and then enters a low-power consumption sleep mode; and recovering the working mode by the central controller after the preset time, and carrying out data acquisition and irrigation operation again.
The invention has the following advantages:
the invention uses the singlechip as a core main board, and has high performance and can realize various complex operations and instructions; the two sensors are arranged, so that the soil humidity of each part of the plant can be obtained more accurately; the accurate watering is realized, the soil permeability meter is simulated, the watering amount is dynamically adjusted, the gap time is reserved in the middle to wait for the infiltration of water, and then the water supplementing amount is automatically adjusted according to the updated humidity, so that the condition of no water accumulation is ensured to slowly approach to the proper humidity; the remote communication with the user side greatly improves the stability and flexibility of the system, so that the user can know the crop condition in real time, such as the abnormal condition of the device, and can send an alarm to the user in real time.
Drawings
FIG. 1 is a schematic block diagram of irrigation command response of a progressive fixed point precision remote control irrigation device according to the present disclosure.
Fig. 2 is a schematic structural diagram of a progressive fixed-point precise remote control irrigation device disclosed by the invention.
Fig. 3 is a schematic structural diagram of a central controller motherboard of a progressive fixed-point precise remote control irrigation device.
FIG. 4 is a graph of the quadratic function of the anti-overflow graded irrigation amount obtained based on simulation of the humidity range of soil suitable for orchid survival.
Fig. 5 is a drawing of pumping rate of a water pump of a progressive fixed-point precision remote control irrigation device according to the present invention.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 and 2, the progressive fixed-point accurate remote control irrigation device disclosed in this embodiment includes a metal box 01, a central controller 02, a humidity acquisition device 03, an irrigation device 04, a wireless communication device 05 and an alarm device 06, wherein the central controller 02 is mounted inside the metal box 01, the humidity acquisition device 03, the irrigation device 04, the wireless communication device 05 and the alarm device 06 are respectively connected to a main board of the central controller 02, the humidity acquisition device 03 includes a first humidity sensor 07 and a second humidity sensor 08, the first humidity sensor 07 and the second humidity sensor 08 are respectively disposed under a soil layer of an irrigation field 09 and maintain a depth difference of 10cm, the wireless communication device 05 is mounted at the top of the metal box 01, and the alarm device 06 is mounted at the upper portion outside the metal box 01.
Referring to fig. 2, the first humidity sensor 07 and the second humidity sensor 08 are respectively placed at positions of 5-10cm and 15-20cm under the soil layer of the irrigation land 09, the specific positions are determined according to plant varieties, the tail ends of the first humidity sensor 07 and the second humidity sensor 08 are respectively fixed in mounting holes 11 on a supporting rod 10 by bolts, one end of the supporting rod 11 is connected to a main board of the central controller 02, the other end of the supporting rod 11 extends out of the bottom of the metal box 01 and stretches into the soil layer of the irrigation land 09, communication wires and power wires of the first humidity sensor 07 and the second humidity sensor 08 penetrate through the center of the supporting rod 11 and are connected to the main board of the central controller 02, a plurality of probes 12 are arranged at the front ends of the first humidity sensor 07 and the second humidity sensor 08, and a plurality of probes 12 at the front ends of the first humidity sensor 07 and the second humidity sensor 08 are arranged in parallel.
Referring to fig. 2, the watering apparatus 04 includes: the water pump 13 is arranged on the ground of the irrigation site 09 on one side of the metal box body 01, the water pump 13 is connected to a main board of the central controller 02, a relay switch 17 is arranged between the water pump 13 and the central controller 02, a water outlet of the water pump 13 is connected with one end of the soft water pipe 14, the other end of the soft water pipe 14 is connected with one end of a water delivery steel pipe 15 obliquely arranged on the side face of the metal box body 01, the other end of the water delivery steel pipe 15 is connected with a shower head 16, the shower head 16 is connected with one end of the water delivery steel pipe 15 through a conical bracket (not shown in the figure), the shower head 16 is higher than 5cm of soil and faces towards the roots of crops, an electromagnetic valve (not shown in the figure) is arranged at the position where the shower head 16 is connected with the water delivery steel pipe 15, namely, the water pump and the electromagnetic valve are combined to improve irrigation precision, the shower head 16 is a shower head uniformly distributed at a leak, the inclination of the shower head 16 is 15 DEG, and the shower head 16 is vertically aligned with a probe end of the first humidity sensor 07 and a second humidity sensor 08.
Referring to fig. 2, the wireless communication device 05 includes a communication module 18 and a wireless communication antenna 19, the communication module 18 is fixed on the top inside the metal case 01 by threads, the bottom of the wireless communication antenna 19 is adsorbed on the top of the metal case 01 by a magnet strip 20 and is connected to the communication module 18 in a wired manner, and in addition, the alarm device 06 includes an LED indicator and a buzzer, which are connected to the main board of the central controller.
Referring to fig. 1, the central controller 02 is configured to receive and process the collected data, perform humidity collection once in three hours, control the relay switch 17 to irrigate according to a preset function after the central controller 02 processes the data, and then the central controller 02 goes to sleep for three hours; the central controller 02 is connected with the wireless communication equipment 05, is communicated with the user terminal 21 in a long distance, sends a humidity threshold curve, a water shortage alarm and real-time humidity information, and the user terminal 21 manually gives a watering instruction or resets a function variable; the LED indicator lamp and the buzzer are responsible for abnormal alarm notification, the main board of the central controller 02 can be further provided with an external plug 22, 220v mains supply is connected to the outside of the external plug 22, a power connection box 23 is arranged in the metal box 01, the external plug 22 is LED out of the metal box body from the power connection box 23, and a transformer set is arranged in the power connection box 23 to supply power to the water pump 13, the electromagnetic valve, the first humidity sensor 07, the second humidity sensor 08, the central controller 02, the relay switch 17 and the like.
Referring to fig. 3, the central controller 02 main board is shown as cc2530 on the figure, DIP28 shows pins of the main board cc2530, the first humidity sensor 07 and the second humidity sensor 08 are selected as sensor types MS-10, soil moisture volume can be directly obtained, measuring range is 0-100%, the first humidity sensor 07 and the second humidity sensor 08 are respectively connected with the p1_0 and the p1_1 of the cc2530 for signal input, and in addition, the LED indicator lamp and the Relay switch are connected with the main board of the central controller 02 in a mode shown as LED0 and Relay-SPDT in the figure.
Referring to fig. 1 and 2, a progressive fixed-point accurate remote control irrigation method disclosed in the present embodiment includes: the central controller 02 periodically controls the humidity acquisition equipment 03 to acquire humidity; the first humidity sensor 07 and the second humidity sensor 08 which are layered under the soil layer of the irrigation land 09 acquire the soil moisture volume X of different depths 1 And X 2 Wherein a depth difference of 10cm is maintained between the first humidity sensor 07 and the second humidity sensor 08; the central controller 02 receives the transmitted soil moisture volume X 1 And X 2 Calculating humidity area value X between 10cm depths 3 Wherein X is 3 ＝X 2 ×0.75+X 1 X 0.25; obtaining X 3 Comparing the value with the lowest value of the proper humidity range for plant cultivation; when X is 3 <When the minimum value of the proper humidity range for plant planting is +0.05, the central controller 02 opens the relay switch 17 to close the water pump control circuit, the water pump 13 is started to pump water out and convey the water to the water delivery steel pipe 15 through the soft water pipe 14, the electromagnetic valve at the shower nozzle 16 is opened, and the shower nozzle 16 sprays water for irrigation; the relay switch 17 is controlled to perform irrigation according to a preset function, wherein the preset function is suitable for planting based on plantsAnd simulating the obtained anti-overflow gradual change irrigation quantity quadratic function in the humidity range.
Taking orchid as an example, the humidity range of soil suitable for living orchid is 40-65%, firstly, the central controller 02 periodically controls the first humidity sensor 07 and the second humidity sensor 08 to obtain the soil moisture volume X with different depths 1 And X 2 Then, a humidity area value X between 10cm depths is calculated 3 Wherein X is 3 ＝X 2 ×0.75+X 1 X0.25, and comparing the obtained X3 value orchid with the minimum value 40% of the suitable living soil humidity range; when X is 3 <When 40% +0.05, the central controller 02 opens the relay switch 17 to close the water pump control circuit, the water pump 13 is started to pump water out and convey the water to the water delivery steel pipe 15 through the soft water pipe 14, the electromagnetic valve at the shower nozzle 16 is opened, and the shower nozzle 16 sprays water for irrigation.
The soil infiltration rate refers to the infiltration amount of soil in unit area of the earth surface in unit time, and gradually increases along with the humidity of the soil, and finally results in water accumulation. Therefore, in order to achieve accurate irrigation and avoid water accumulation, a set of anti-overflow gradual change irrigation quantity quadratic function simulating congestion treatment is researched, and the anti-overflow gradual change irrigation quantity quadratic function of orchid is shown in figure 4. The aim is to control the water quantity to be low corresponding to the permeability for a plurality of times in order to ensure that no ponding is formed in the soil humidity rising process, and taking orchid as an example, the anti-overflow gradual change irrigation quantity quadratic function is as follows: y=3000 x 2 3600+1100, where X is the actual humidity value, the above calculated X may be used 3 And x and y are the corresponding proper amount of water corresponding to the actual humidity value. The above-mentioned orchid's anti-overflow gradual change irrigated amount quadratic function is simulated according to the measured data after multiple times of irrigation, specifically, take orchid's suitable living soil humidity range as the basis, generally take the lowest value or lowest value near value and highest value or highest value near value of this range as two basic values, then take the intermediate value of two basic values again, regard above-mentioned two basic values and intermediate value as the three experimental values to confirm the gradual change irrigated amount quadratic function of anti-overflow respectively, as shown in figure 4, these three values are: 40The current soil moisture values in FIG. 4 are expressed in terms of the soil moisture volume, specifically X is calculated by the detection of a moisture sensor 3 In the detection and calculation of X 3 When the water content is 40%, a plurality of watering experiments are carried out, the watering amount of each watering experiment is different, the water content is finally obtained, when the water content is 150ml, the detection calculation is carried out after 30-45s after the watering is finished, and X is calculated 3 Approaching 50%, setting 150ml of irrigation water quantity at the moment as a function y of a quadratic function of the anti-overflow gradual change irrigation quantity at the moment to obtain experimental points (40%, 150 ml), and similarly obtaining other two experimental points (50%, 60 ml) and (60%, 30 ml), wherein when (60%, 30 ml) are obtained, the irrigation is completed X 3 Approaching 65%, thus the quadratic function of the anti-overflow gradual change irrigation quantity can be simulated by three test points.
The central controller 02 controls the first humidity sensor 07 and the second humidity sensor 08 to perform data acquisition after effective permeation time after the water pump 13 is turned off in a data acquisition period to calculate and obtain X after irrigation in real time 3 The effective permeation time is 10 times the on time of the water pump 13. Specifically, X is obtained by detection calculation before each irrigation 3 Substituting the quadratic function of the overflow-preventing gradual change irrigation quantity obtained by simulation to calculate the required irrigation quantity y at the moment 1 Then, calculating y according to the pumping speed curve of the water pump 1 Corresponding water pump opening time t 1 The pumping speed curve of the water pump is shown in figure 5, and then the central controller 02 turns on the water pump control circuit to keep t 1 After seconds, the water pump is turned off, and 10t is waited for in order to ensure effective penetration of water 1 After seconds, the sensor acquires the next data acquisition to obtain X after irrigation 3 The next water pump on time was calculated in the same manner. With the soil humidity gradually increasing, the corresponding water pump opening time is reduced in order, and when the water pump opening time is finally close to 65% of the highest value of the soil humidity range suitable for orchid survival, irrigation is stopped, and the central controller 02 controls the water pump to spray for multiple times X in different time periods 3 The value is sent to the user side through the wireless communication equipment to enter a low-power consumption sleep mode, and the central controller 02 resumes the working mode three hours later to resume data acquisition and irrigation operation.
The invention uses the humidity sensor group, obtains a relatively more accurate humidity value through multiple data acquisition, and calculates the average volume water content of a point between two humidity sensors according to a soil permeability curve. At this time, the central controller will have an average volume moisture content X 3 Comparing with the plant cultivation suitable humidity h, if the water content of the same volume is X 3 <h+0.05, opening a relay switch connected with the water pump, and communicating with a water pump circuit to perform irrigation operation. And calculating the water pumping quantity of the water pump according to the water pumping rate of the water pump so as to control the time for starting the water pump and adjust the water pouring quantity of the water pump. And calculating the water pump starting time according to the quadratic function of the measured humidity and the anti-overflow gradual change irrigation quantity so as to achieve accurate irrigation. The remote communication between the central controller and the user side greatly improves the stability and flexibility of the system, so that the user can know the crop condition in real time, and can send an alarm to the user in real time if the device is abnormal. Accurate watering is realized by dynamically adjusting the watering quantity, the gap time is reserved in the middle to wait for water infiltration, and then the water supplementing quantity is automatically adjusted according to the updated humidity, so that the condition of no water accumulation is ensured to slowly approach to the proper humidity. And a plant database is also built, the plant database is classified according to the types, different types correspond to the corresponding suitable growth environment values, and the function curve is flexibly adjusted by virtue of the powerful processing capacity of the central controller mainboard cc 2530.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (1)
1. The progressive fixed-point accurate remote control irrigation method is characterized by comprising the following steps of:
the central controller periodically controls the humidity acquisition equipment to acquire humidity;
the first humidity sensor and the second humidity sensor which are layered under the soil layer of the irrigation land acquire different depthsSoil moisture volume X 1 And X 2 Wherein a depth difference of 10cm is maintained between the first humidity sensor and the second humidity sensor;
the central controller receives the transmitted soil moisture volume X 1 And X 2 Calculating humidity area value X between 10cm depths 3 Wherein X is 3 ＝X 2 ×0.75+X 1 ×0.25；
Obtaining X 3 Comparing the value with the lowest value of the proper humidity range for plant cultivation;
when X is 3 <When the minimum value of the proper humidity range for plant planting is +0.05, the central controller opens the relay switch to close the water pump control circuit, the water pump is started to pump water out and convey the water to the water delivery steel pipe through the soft water pipe, the electromagnetic valve at the shower nozzle is opened, and the shower nozzle sprays water for irrigation;
the relay switch is controlled to irrigate according to a preset function in irrigation, wherein the preset function is a quadratic function of the anti-overflow gradual change irrigation quantity obtained based on simulation of a proper humidity range for plant planting;
the central controller controls the first humidity sensor and the second humidity sensor to acquire data after effective permeation time after the water pump is closed in a data acquisition period so as to calculate and obtain X after irrigation in real time 3 The effective permeation time is 10 times of the water pump opening time;
the central controller controls the first humidity sensor, the second humidity sensor and the water pump to circularly detect humidity data and irrigation until X 3 Stopping irrigation when the humidity is close to the highest value of the proper humidity range for plant cultivation;
the central controller uses X times of different time periods 3 The value is sent to the user terminal through the wireless communication equipment and then enters a low-power consumption sleep mode; a kind of electronic device with high-pressure air-conditioning system
After a preset time, the central controller resumes the working mode and resumes data acquisition and irrigation operation;
the quadratic function is obtained in the following way:
taking the range of the humidity of the soil suitable for survival of the current plant, and taking the lowest value and the highest value of the range as two basic values;
taking the intermediate value of the two basic values, and respectively taking the two basic values and the intermediate value as a first experimental value, a second experimental value and a third experimental value for determining the quadratic function of the anti-overflow gradual change irrigation quantity;
x is obtained by detection and calculation of a humidity sensor 3 ；
In the detection and calculation of X 3 When the first experimental value is obtained, carrying out a plurality of irrigation experiments with different irrigation water volumes, wherein the irrigation water volumes of each irrigation experiment are different;
when the irrigation water quantity is the first preset irrigation water quantity, detecting and calculating after the preset time is passed after the irrigation is completed, X 3 Approaching the third experimental value, and determining the irrigation water quantity at the moment as a function y value of a quadratic function of the overflow-preventing gradual change irrigation quantity at the moment to obtain a first experimental point;
respectively detecting and calculating a second experimental point and a third experimental point by using the second preset irrigation water quantity and the third preset irrigation water quantity;
when the current experimental point is the third experimental point, X 3 Near the highest value of the proper humidity range for plant cultivation;
and calculating by using the first experimental point, the second experimental point and the third experimental point to obtain the anti-overflow gradient irrigation quantity quadratic function.
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| CN108184618A (en) * | 2018-03-01 | 2018-06-22 | 中南林业科技大学 | Water supply installation for plant and the water source circulatory system for plant |
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| CN110896831A (en) * | 2019-12-04 | 2020-03-24 | 西安建筑科技大学 | Intelligent green land sprinkling irrigation system and method capable of automatically adjusting sprinkling irrigation intensity in real time |
| CN111316889A (en) * | 2020-04-10 | 2020-06-23 | 昆明理工大学 | Multi-mode fixed-point watering device |
| AT524682B1 (en) * | 2021-02-26 | 2022-08-15 | Mohammed Dipl Ing Dr Techn Hassan | Intelligent individual learning irrigation system and methods of irrigation |
| CN115067184A (en) * | 2022-07-20 | 2022-09-20 | 绿建生态环境集团有限公司 | Automatic change water conservation gardens irrigation system |
| CN117073759A (en) * | 2023-08-18 | 2023-11-17 | 中国科学院西北生态环境资源研究院 | Sha Dehuan plant water consumption real-time monitoring device |
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