Feedback irrigation method and device based on plant wearable device and electronic equipment

Abstract

The invention provides a feedback irrigation method and device based on a plant wearable device and electronic equipment, is applied to a feedback irrigation system, and relates to the technical field of agriculture. The method comprises the steps that stem diameter detection equipment obtains stem diameter data of a plant and sends the stem diameter data to a data receiver; the data receiver uploads the stem diameter data to a cloud server; the monitoring terminal obtains target stem diameter data of the target plant in the cloud server; the monitoring terminal inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy and sends the irrigation strategy to feedback irrigation equipment; wherein the irrigation strategy comprises irrigation time, irrigation volume, irrigation flow and working pressure of feedback irrigation equipment; feedback irrigation equipment executes an irrigation strategy; the stem diameter detection device is used for detecting the diameter change of the plant stem, and whether the plant is short of water or not and the needed watering amount can be directly known through data analysis.

Description

Technical Field

[0001] The present invention relates to the field of agricultural technologies, and particularly to a feedback irrigation method, device, and electronic device based on a plant wearable device. Background Art

[0002] In the process of agricultural production, it is very important to understand the water consumption degree and demand of crops at different growth stages and different seasonal climates. By detecting the water consumption of plants through sensor technology, the growth stage of plants can be judged, and the amount of water required by plants at this stage can be judged from big data.

[0003] In the prior art, the humidity of the soil in the plant planting area is detected, and irrigation determination is carried out based on the humidity of the soil. However, due to the large root system of plants, the humidity of the soil at a single point cannot accurately reflect the water demand of the plant. At the same time, the soil humidity is an indirect factor for analyzing the water demand of the plant and cannot directly reflect the water demand of the plant, so that the originally refined precise irrigation cannot meet the irrigation needs of the plant. Summary of the Invention

[0004] The purpose of the present invention is to provide a feedback irrigation method, device, and electronic device based on a plant wearable device. By detecting the change in the diameter of the plant stem through a stem diameter detection device and through data analysis, it is possible to directly know whether the plant is short of water and the amount of water to be irrigated.

[0005] In a first aspect, the present invention provides a feedback irrigation method based on a plant wearable device, which is applied to a feedback irrigation system. The system includes: a stem diameter detection device, a data receiver, a cloud server, a monitoring terminal, and a feedback irrigation device; the method includes: The stem diameter detection device obtains the stem diameter data of the plant and sends the stem diameter data to the data receiver; The data receiver uploads the stem diameter data to the cloud server; The monitoring terminal obtains the target stem diameter data of the target plant in the cloud server; The monitoring terminal inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy, and sends the irrigation strategy to the feedback irrigation device; wherein, the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device; The feedback irrigation device executes the irrigation strategy.

[0006] In some preferred embodiments of the present invention, the target stem diameter data includes: a plurality of stem diameter values and the slope of the fitting curve of a plurality of stem diameter change amounts; the step of the monitoring terminal inputting the target stem diameter data into a pre-trained irrigation model and outputting an irrigation strategy includes: Draw a stem diameter change curve based on multiple consecutive stem diameter values, and determine the stem diameter change amount based on multiple consecutive stem diameter values; Perform linear fitting on the stem diameter change amount to obtain a fitted curve of the stem diameter change amount; If the slope of the fitted curve of the stem diameter change amount is less than a preset target slope, input the target stem diameter data into a pre-trained irrigation model to output an irrigation strategy.

[0007] In some preferred embodiments of the present invention, the stem diameter detection device includes: a wearable sensor and a resistor; the wearable sensor includes: a flexible material and a data line; The flexible material is wound around the stem of the plant to be monitored; Both ends of the flexible material are connected to the resistor through the data line.

[0008] In some preferred embodiments of the present invention, the wearable sensor includes: a first fixator and a second fixator; Both the first fixator and the second fixator are connected to the flexible material, and the first fixator and the second fixator are attracted to each other by an internally installed magnet to wind and fix the flexible material on the stem of the plant.

[0009] In some preferred embodiments of the present invention, the flexible material includes: an elastic conductive inner core and an elastic insulating outer sheath; the elastic insulating outer sheath is sleeved outside the elastic conductive inner core.

[0010] In some preferred embodiments of the present invention, the elastic conductive inner core is a silk-based conductive carbon fabric inner core; The elastic insulating outer sheath is a polydimethylsiloxane elastic insulating outer sheath or an aliphatic-aromatic random copolyester elastic insulating outer sheath.

[0011] In some preferred embodiments of the present invention, in a greenhouse environment, the feedback irrigation device includes: an irrigation belt; the irrigation belt is laid in the planting trough along the extending direction of the planting trough; Divide the planting trough into several monitoring areas at equal distances, and use the monitoring areas except the first monitoring area and the last monitoring area along the extending direction of the irrigation belt as the target monitoring areas; Set at least one stem diameter detection device in the target monitoring area.

[0012] In some preferred embodiments of the present invention, in a field environment, the feedback irrigation device includes: a sprinkler irrigation mechanism; The stem diameter detection device is arranged within the spray coverage intersection range of any two sprinkler irrigation mechanisms.

[0013] In a second aspect, the present invention provides a feedback irrigation device based on a plant wearable device, which is applied to a feedback irrigation system. The system includes: a stem diameter detection device, a data receiver, a cloud server, a monitoring terminal, and a feedback irrigation device; the device includes: A stem diameter data processing module, configured to obtain the stem diameter data of the plant from the stem diameter detection device and send the stem diameter data to the data receiver; A data transmission module, configured to upload the stem diameter data from the data receiver to the cloud server; A target data processing module, configured to obtain the target stem diameter data of the target plant in the cloud server by the monitoring terminal; An irrigation strategy determination module, configured to input the target stem diameter data into a pre-trained irrigation model by the monitoring terminal, output an irrigation strategy, and send the irrigation strategy to the feedback irrigation device; wherein the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device; An irrigation strategy execution module, configured to execute the irrigation strategy by the feedback irrigation device.

[0014] In a third aspect, the present invention provides an electronic device, including a processor and a memory. The memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the feedback irrigation method based on the plant wearable device provided in the first aspect above.

[0015] The present invention brings the following beneficial effects: The present invention provides a feedback irrigation method, device, and electronic device based on a plant wearable device, which are applied to a feedback irrigation system. The system includes: a stem diameter detection device, a data receiver, a cloud server, a monitoring terminal, and a feedback irrigation device; the method includes: the stem diameter detection device obtains the stem diameter data of the plant and sends the stem diameter data to the data receiver; the data receiver uploads the stem diameter data to the cloud server; the monitoring terminal obtains the target stem diameter data of the target plant in the cloud server; the monitoring terminal inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy, and sends the irrigation strategy to the feedback irrigation device; wherein the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device; the feedback irrigation device executes the irrigation strategy; by detecting the change in the diameter of the plant stem through the stem diameter detection device and through data analysis, it is possible to directly know whether the plant is short of water and the amount of water required for irrigation. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the structure of a feedback irrigation system provided by an embodiment of the present invention; Figure 2 Schematic diagram of the structure of a stem diameter detection device provided by an embodiment of the present invention; Figure 3 Schematic diagram of the structure of a feedback irrigation device provided by an embodiment of the present invention; Figure 4 Flowchart of a feedback irrigation method based on a plant wearable device provided by an embodiment of the present invention; Figure 5 Schematic diagram of the installation position of a feedback irrigation device in a greenhouse provided by an embodiment of the present invention; Figure 6 Schematic diagram of the installation position of a feedback irrigation device in a field provided by an embodiment of the present invention; Figure 7 Schematic diagram of the structure of a feedback irrigation device based on a plant wearable device provided by an embodiment of the present invention; Figure 8 Schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0018] Icons: 1 - Stem diameter detection device; 2 - Data receiver; 3 - Cloud server; 4 - Monitoring terminal; 5 - Feedback irrigation device; 11 - Resistance meter; 12 - Wearable sensor; 100 - Charging interface; 110 - Indicator light; 120 - Reset zero button; 130 - Flexible material; 140 - First fixator; 150 - Second fixator; 160 - Data line; 170 - Male banana plug; 180 - Female banana plug; 51 - Control cabinet; 52 - Irrigation mechanism; 520 - Solenoid valve; 530 - Water pump; 540 - Liquid storage tank; 550 - Irrigation water pipe; 560 - Shunt; 570 - Elbow drip emitter; 580 - Transmission pipe; 410 - Groove; 420 - Irrigation belt; 430 - First plant; 440 - Second plant; 450 - Ridge; 460 - Third plant; 470 - Fourth plant; 480 - Irrigation range; 490 - Irrigation device; 610 - Stem diameter data processing module; 620 - Data transmission module; 660 - Target data processing module; 640 - Irrigation strategy determination module; 650 - Irrigation strategy execution module; 700 - Memory; 701 - Processor; 702 - Bus; 703 - Communication interface. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0024] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] In the process of agricultural production, it is very important to understand the degree of water consumption and the amount of water demand of crops at different growth stages and different seasonal climates. By detecting the water consumption of plants through sensor technology, it is possible to judge the growth stage of the plants, and the amount of water required by the plants at this stage can be judged from big data. In the prior art, the humidity of the soil in the plant planting area is detected, and irrigation is determined based on the humidity of the soil. However, due to the large root system of the plant, the humidity of the soil at a single point cannot accurately reflect the water demand of the plant. At the same time, the soil humidity is an indirect factor for analyzing the water demand of the plant and cannot directly reflect the water demand of the plant, so that the originally refined precision irrigation cannot meet the irrigation needs of the plant.

[0026] By detecting the change in the stem diameter of the plant through a sensor to obtain the data of the water demand of the plant, and using a feedback irrigation device to water, it can not only improve the irrigation accuracy, save precious water resources, improve the water resource utilization efficiency, but also help to improve the yield and quality of crops, reduce energy consumption and environmental pollution, improve agricultural production efficiency, and adapt to climate change. In addition, it can also provide scientific decision-making support for farmers, help them formulate a reasonable irrigation plan based on real-time data analysis, thereby reducing the artificial management cost, optimizing the crop growth environment, promoting healthy growth, which is of great significance for coping with the challenges brought by global water shortage and climate change. Compared with the soil sensor that indirectly knows the water demand of the plant by detecting the soil water content, by detecting the change in the stem diameter of the plant through the stem diameter detection device 1 and through data analysis, it is possible to directly know whether the plant is short of water and the amount of water to be irrigated.

[0027] The subtle fluctuations in the stem diameter of plants (such as changes caused by water absorption, transpiration or circadian rhythm) usually occur on a time scale of hours or even minutes. Due to the insufficient time resolution of traditional manual measurement or interval sampling methods, it is often difficult to capture such dynamic processes, resulting in the lack of key data in plant physiology research. In contrast, the high-frequency real-time monitoring technology based on plant wearable sensors can achieve data collection at the minute level or even the second level. It can not only accurately track the instantaneous changes in the stem diameter (such as shrinkage under drought stress or expansion recovery after irrigation), but also ensure the integrity of the data through 24-hour all-weather continuous monitoring.

[0028] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] Embodiment 1 The embodiment of the present invention provides a feedback irrigation method based on a plant wearable device, which is applied to a feedback irrigation system. The system includes: a stem diameter detection device 1, a data receiver 2, a cloud server 3, a monitoring terminal 4 and a feedback irrigation device 5.

[0030] Specifically, refer to Figure 1 the schematic structural diagram of a feedback irrigation system provided by an embodiment of the present invention shown in the figure. The stem diameter detection device 1 is used to obtain the stem diameter data of the plant and send it to the data receiver 2.

[0031] In some preferred embodiments of the present invention, the stem diameter detection device 1 includes: a wearable sensor 12 and a resistor 11; the wearable sensor 12 includes: a flexible material 130 and a data line 160; the flexible material 130 is wound around the stem of the plant to be monitored; both ends of the flexible material 130 are connected to the resistor 11 through the data line 160.

[0032] Specifically, refer to Figure 2 the schematic structural diagram of a stem diameter detection device provided by an embodiment of the present invention shown in the figure. The wearable sensor 12 includes: a flexible material 130 and a data line 160; the flexible material 130 forms the middle part of the flexible wearable sensor 12 and is wound around the stem part of the plant to be measured. Both ends of the flexible material 130 are data lines 160, and the end of the data line 160 is connected to the resistor 11 through a banana plug (a commonly used quick-connect plug for wires).

[0033] Furthermore, in some preferred embodiments of the present invention, the flexible material 130 includes: an elastic conductive inner core and an elastic insulating outer sheath; the elastic insulating outer sheath is sleeved outside the elastic conductive inner core.

[0034] Furthermore, in some preferred embodiments of the present invention, the elastic conductive inner core is a silk-based conductive carbon fabric inner core; the elastic insulating outer sheath is a polydimethylsiloxane elastic insulating outer sheath or an aliphatic-aromatic random copolyester elastic insulating outer sheath.

[0035] Specifically, the elastic conductive inner core is a silk-based conductive carbon fabric inner core. The manufacturing process of this inner core is to twist the real silk georgette fibers to make warp yarns, make parallel real silk georgette fibers into weft yarns, and arrange the warp yarns and weft yarns into silk fabrics. Each real silk georgette fiber is composed of millions of silk fibroin molecules. The β-sheet crystals in silk fibroin can be aromatized or cyclized into sp 2Hybrid carbon structure. Therefore, silk fibroin is carbonized at high temperature in an inert atmosphere (continuous gas flow with an argon flow rate of 150 standard cubic centimeters per minute and a hydrogen flow rate of 16 standard cubic centimeters per minute), and then can be converted into graphene nano-carbon with good conductivity. The carbonized silk fabric is encapsulated with an elastic silicone of Ecoflex [a degradable plastic composed of polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT)]. The elastic insulating outer sleeve is a polydimethylsiloxane (PDMS) elastic insulating outer sleeve or an aliphatic-aromatic random copolyester elastic insulating outer sleeve. After the elastic conductive inner core is prepared, it is placed on a layer of PDMS film, and an alcohol solution of APTES (3-aminopropyltriethoxysilane) is sprayed, and left standing for 3 minutes to wait for the alcohol to completely volatilize. The thickness of the PDMS film is 1.2 - 1.75 mm. Limiting the thickness of the PDMS film can better ensure the consistency of signal changes and the stability and stretchability of the overall flexible material 130. The purpose of spraying the alcohol solution of APTES is to form hydrogen bonds between the amino group of APTES and the oxygen-containing functional groups (such as hydroxyl groups, carboxyl groups, etc.) on the surface of the silk-based conductive carbon fabric, so as to achieve the adsorption of APTES on the surface of the silk-based conductive carbon fabric. At the same time, APTES can alkylate the PDMS surface. The ultimate goal is to achieve their tight combination, improve the bonding degree between the elastic conductive inner core and the elastic insulating outer sleeve, and make their stretching more consistent (that is, to avoid situations similar to degumming). There are two forms of subsequent preparation. One is to add a certain amount (1 - 2 mL) of PDMS liquid with a curing agent in a fixed mold and bake it at 50 degrees Celsius for 1.5 hours to make it completely cured. Its advantage is that it can improve consistency, that is, their combination is tighter. The defect is that the thickness processing is prone to inconsistency. It can have a long service life, but it reduces the repeatability of production effects. The other is to add a layer of 1.2 - 1.75 mm solid PDMS, spray the alcohol solution of APTES, and then fix them with clips to make them combine through chemical bonds. Its advantage is that the thickness is consistent. The defect is that the combination is not tight enough, reducing the service life and improving the repeatability of production effects. The finally prepared flexible material 130 has a length of 6 - 12 cm, and users can choose according to actual needs.

[0036] Further, the resistor 11 includes a wireless template, a power module, a detection module, and a resistor 11 housing.

[0037] Among them, the wireless module is located at the center of the circuit board and can be used to wirelessly transmit the received data to the data receiver 2. The power module also includes a Type-C interface. The Type-C interface is responsible for the download and serial port debugging functions of the resistor 11 and also needs to provide a voltage such as +5V to the power module. This module enables the resistor 11 to use a storage battery when moving. The detection module is used to detect the received signal. The housing of the resistor 11 is a protective case for protecting the internal resistance measurement circuit, including connection ports for connecting the measurement banana plugs and the power supply, as well as an indicator light 110 and a reset zero button 120. The indicator light 110 can indicate various different states of the resistor 11, and the reset zero button 120 switch functions to reset, turn on, and turn off the resistor 11. The design of the housing takes into account portability and durability to adapt to different usage environments.

[0038] Further, the two ends of the flexible material 130 are circuit-connected to the resistor 11 through the data line 160, the male banana plug 170, and the female banana plug 180.

[0039] Specifically, the resistor 11 and the data line 160 are circuit-connected to both ends of the resistor 11 through banana plugs, which can be stably connected, easily plugged and unplugged, and waterproof protection is provided for the connection.

[0040] The data line 160 obtains the sampling value (AD value) of the flexible wearable strain sensor through the resistor 11. The wireless module of the resistor 11 transmits data to the data receiver 2 through Bluetooth. The data receiver 2 sends the data to the cloud server 3 through, for example, a 4G network base station. The user accesses the cloud server 3 through the monitoring terminal 4 to obtain the data and can further obtain the dynamic data of the plant stem growth through a human-computer interaction method.

[0041] In some preferred embodiments of the present invention, the wearable sensor 12 includes: a first fixer 140 and a second fixer 150; both the first fixer 140 and the second fixer 150 are connected to the flexible material 130, and the first fixer 140 and the second fixer 150 are attracted to each other through the built-in magnets to wind and fix the flexible material 130 on the stem of the plant.

[0042] In some preferred embodiments of the present invention, the first fixer 140 and the second fixer 150 are of a plastic housing structure, with a magnet built in, which can attract each other to fix the flexible electrode, making it form a ring around the stem of the plant. The weight of the magnet should not be higher than 5g to avoid excessive load on the plant growth. Through the magnetic adsorption of the two fixers, not only is there better repeatability, but also the fixed position of the flexible electrode remains unchanged each time, generating more stable data when stretched.

[0043] Specifically, the flexible material 130 can be fixed through the first fixer 140 and the second fixer 150.

[0044] In some preferred embodiments of the present invention, the resistometer 11 is fixed to a bamboo stick with a cable tie, and the flexible material 130 of the flexible wearable sensor 12 is tied to the stem of the plant to be measured. The first fixator 140 and the second fixator 150 are opened and adjusted to a position where the flexible material 130 will not slide off the stem, and then the fixators are closed for fixation.

[0045] Furthermore, the stem diameter detection device 1 further includes: a charging interface 100, an indicator light 110, and a reset and zeroing button 120. The resistometer 11 can be charged by connecting its charging interface 100 with a Type-C data cable 160. When the Type-C interface is plugged in, the indicator light 110 emits a red light, and when it is fully charged, the light of the indicator light 110 goes out. Use a sharp object to poke the reset and zeroing button 120 of the resistometer 11 until the indicator light 110 emits a red light, which means it is powered on.

[0046] The data receiver 2 is a data gateway. The resistometer 11 is signal-connected to the data receiver 2 and is used to send the sampled values measured by the stem diameter detection device 1 to the data receiver 2. The data receiver 2 is signal-connected to the network and is used to send the sampled values to the network. The network is signal-connected to the monitoring terminal 4 and is used to send the sampled values to the cloud server 3.

[0047] The cloud server 3 scans the data packets within the coverage range through the antenna of the built-in wireless transmission device (2.4G radio frequency), obtains the data packets from the resistometer 11, and performs parsing and storage. The data receiver 2 can integrate the data packets within a period of time according to a preset reporting interval and report them to the network wirelessly, such as in a 4G manner or in a wired manner, through the UDP (Open Systems Interconnection) network protocol.

[0048] The monitoring terminal 4 can be any suitable monitoring terminal 4. In some preferred embodiments of the present invention, the monitoring terminal 4 is a computer terminal.

[0049] See Figure 3 The structural schematic diagram of a feedback irrigation device provided by the embodiment of the present invention shown in the figure; the feedback irrigation device 5 includes a control cabinet 51 and an irrigation mechanism 52. The control cabinet 51 receives the irrigation strategy generated by the monitoring terminal 4 and controls the irrigation mechanism 52 to irrigate the plants.

[0050] In some preferred embodiments of the present invention, the control cabinet 51 integrates a variety of sensors, including temperature, humidity, light, soil moisture, etc., for real-time monitoring of greenhouse environmental parameters. A data processing unit is provided inside the control cabinet 51, which can receive the instructions given by the monitoring terminal 4, that is, the irrigation strategy generated by the irrigation model, and manually or automatically select the irrigation amount and irrigation time. The control cabinet 51 is connected to the irrigation mechanism 52, so it can automatically turn on or off the irrigation equipment according to the instructions to achieve precise irrigation. The control cabinet 51 has a remote monitoring function, and managers can view the greenhouse environmental data in real time through terminals such as mobile phones and computers and perform manual intervention.

[0051] In some preferred embodiments of the present invention, continue to refer to Figure 3 , the irrigation mechanism 52 includes a solenoid valve 520, a water pump 530, a liquid storage tank 540 and an irrigation belt 420.

[0052] For the solenoid valve 520, when it is powered on, the valve stem is lifted by electromagnetic force and the pilot valve port is opened. At this time, the upper chamber of the solenoid valve 520 is depressurized through the pilot hole, and a pressure difference with a lower pressure at the top and a higher pressure at the bottom is formed around the main valve core. Under the action of the pressure difference, the fluid pressure pushes the main valve core upward to open the main valve port; when it is powered off, under the action of the spring force and the gravity of the main valve core, the valve stem resets, the pilot hole closes, the main valve core moves downward, and the main valve port closes; the pressure in the upper chamber of the solenoid valve 520 increases, and the fluid pressure pressurizes the main valve core, providing better sealing.

[0053] The top exposed diameter of the water pump 530 is 28 - 29 mm, the overall height is 168 - 169 mm, the ejection height is 100 - 102 mm, and the net weight is 0.130 - 0.135 Kg. The working pressure of the water pump 530 is 0.17 - 0.38 MPa, the flow rate is 0.12 - 1.04 m3 / h, the range is 4.6 - 10.7 m, the spraying angle adjustment range is 40° - 360°, and the interface is a 4 - inch internal thread interface.

[0054] The liquid storage tank 540 is a flat-bottomed barrel with a capacity of 299.7 - 300.1 L. The bottom diameter of the flat-bottomed barrel is 499 - 500 mm, the vertical height is 1508 - 1510 mm, the total height is 1598 - 1600 mm, the outer diameter is 229 - 230 mm, the inner diameter is 208 - 210 mm, and the cross beam is 678 - 680 mm × 174 - 175 mm.

[0055] In some preferred embodiments of the present invention, continue to refer to Figure 3 , the irrigation belt 420 includes an irrigation water pipe 550, a diverter 560, an elbow drip emitter 570, and a transmission pipe 580.

[0056] The irrigation water pipe 550 is a sun-resistant and anti-aging PE pipe. The diameter of the irrigation water pipe 550 is 40 mm and the length is 15 m. The diverter 560 includes a barbed water inlet and a flat water outlet, and is used to connect the PE pipe. The working pressure is 2 - 4 Kg and the flow rate is 3.5 - 4 L. The connecting port length of the elbow drip emitter 570 is 6 cm, and the drip emitter head length is 15.5 cm. Its working pressure range is 0.5 - 2.0 bar and the flow rate is 2.1 - 2.3 L / H. The four diversion ports of the diverter 560 are for the transmission pipe, and the top water inlet is connected to the flat water outlet of the diverter 560. One end of the transmission pipe 580 is connected to the connecting port of the elbow drip emitter 570, and the other end is connected to one of the four diversion ports of the diverter 560.

[0057] The control cabinet 51 integrates a variety of sensors, including temperature, humidity, light, soil moisture, etc., for real-time monitoring of greenhouse environmental parameters. A data processing unit is provided inside the control cabinet 51, which can monitor the instructions given by the monitoring terminal 4 and manually or automatically select the irrigation amount and irrigation time. The control cabinet 51 is connected to the irrigation mechanism 52, so it can automatically turn on or off the solenoid valve 520 and the water pump 530 connected to the irrigation mechanism 52 according to the instructions to achieve precise irrigation. The solenoid valve 520 opens when powered on, allowing water to flow through, and closes when powered off, cutting off the water flow. The water pump 530 transports the water in the liquid storage tank 540 to the irrigation system according to the working pressure and flow rate requirements. The water flow flows from the diverter 560 in the irrigation mechanism 52 into 4 elbow drip emitters 570 and finally drips into the soil of the cultivation tank to achieve uniform irrigation. The entire system supports remote monitoring. Managers can view the greenhouse environmental data in real time through terminals such as mobile phones and computers, and perform manual intervention when necessary to ensure that plants obtain appropriate moisture, optimize the growth environment, improve the water resource utilization efficiency, and at the same time reduce the manual management cost. The feedback irrigation system provided by the embodiment of the present invention combines the feedback irrigation device 5 of the stem diameter detection device 1. Through intelligent and automated technologies, it can perform precise irrigation according to the physical changes of the plant stems and the actual water requirements, effectively saving water resources, improving the farmland management efficiency, and reducing the labor intensity of farmers. The automated control function reduces manual intervention, lowers the labor cost, and at the same time improves the yield and quality of agricultural products. In addition, the feedback irrigation system is environmentally friendly, helps to adapt to climate change, and promotes the sustainable development of agriculture. In the long run, it can bring economic benefits of water conservation, increased yield and quality, and is an important tool for realizing agricultural modernization and green development.

[0058] Exemplarily, data on the change in plant stem diameter is obtained. On the data analysis software of the computer terminal, click on the plant of the target experimental group, select a specific date range to export the sampled values of the stem diameter change transmitted back by the stem diameter detection device, and uniformly zeroize the initial stem diameter data. Starting from the third day of the downloaded data, subtract the data of the first day from the data of the third day to obtain the stem diameter change value (ΔSC), and perform smoothing processing on it. Perform linear fitting on the stem diameter change values (ΔSC) for three consecutive days (including the current day and the previous two days) to obtain a linear regression equation with time as the independent variable and the stem diameter change value as the dependent variable. If the slope of this linear regression equation < 0, the irrigation time and irrigation amount can be determined based on the stem diameter change (ΔSC), and an irrigation instruction is sent to the feedback irrigation device control cabinet 51.

[0059] According to the irrigation instruction given by the data analysis software, the control cabinet 51 automatically turns on or off the solenoid valve 520 and the water pump 530 connected to the irrigation device. This step supports remote monitoring. Managers can view the greenhouse environment data in real time through terminals such as mobile phones and computers, and perform manual intervention when necessary, which has the advantages of simple operation, being unrestricted by time and space, and improving efficiency.

[0060] The solenoid valve 520 opens when powered on, allowing water to flow through, and closes when powered off, cutting off the water flow.

[0061] The water pump 530 transports the water in the liquid storage tank 540 to the irrigation system according to the working pressure and flow requirements. The water flow flows into 4 elbow drip arrows 570 from the diverter 560 of the drip irrigation water pipe in the irrigation device, and finally drip-irrigates into the soil to achieve uniform irrigation.

[0062] Applied to the above system, refer to Figure 4 the flowchart of a feedback irrigation method provided by an embodiment of the present invention shown in Step S102, the stem diameter detection device 1 acquires the stem diameter data of the plant and sends the stem diameter data to the data receiver 2.

[0063] Specifically, the flexible material 130 of the flexible wearable sensor 12 is tied to the stem of the measured plant. Use the first and second fixators 150 to adjust to a position where the flexible material 130 will not slide off the stem, and then close the fixator for fixation. Both ends of the flexible material 130 are circuit-connected to the resistor 11 through the male banana plug 170 and the female banana plug 180 of the data cable 160 to complete the setting of the data acquisition system. The flexible wearable strain sensor monitors the expansion and contraction of the plant stem in real time, and transmits the sampled value (AD value) to the resistor 11 through the data cable 160. The wireless module of the resistor 11 synchronously transmits the data to the data receiver 2 through Bluetooth to complete the acquisition and transmission of the data.

[0064] Step S104: The data receiver 2 uploads the stem diameter data to the cloud server 3.

[0065] Specifically, in the data integration and upload phase, the data receiver 2 integrates the data packets within a period of time and reports them to the cloud server 3 wirelessly (such as via 4G) or through a wired connection (such as the UDP network protocol). The cloud server 3 is equipped with a wireless transmission device (2.4G radio frequency) to scan, analyze, and store the data packets within its coverage area. This process ensures the timely upload and efficient processing of data.

[0066] Step S106: The monitoring terminal 4 obtains the target stem diameter data of the target plant from the cloud server 3.

[0067] Specifically, in the access and download phase, the user accesses the cloud server 3 through the monitoring terminal 4 (such as a computer terminal), selects a specific date range, and downloads the sampled values of the stem diameter changes of the plants in the target experimental group. The initial stem diameter data is uniformly reset to zero. Starting from the third day of the downloaded data, the stem diameter change amount is obtained by subtracting the data of the first day from the data of the third day, and it is smoothed. This step ensures the accurate analysis of the data and the accuracy of subsequent model training.

[0068] Step S108: The monitoring terminal 4 inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy, and sends the irrigation strategy to the feedback irrigation device 5; wherein, the irrigation strategy includes: irrigation time, irrigation volume, irrigation flow rate, and the working pressure of the feedback irrigation device 5.

[0069] Specifically, in the data analysis and model training phase, the stem diameter change amounts for three consecutive days (including the current day and the previous two days) are linearly fitted to obtain a linear regression equation with time as the independent variable and the stem diameter change value as the dependent variable. If the slope of this linear regression equation is less than 0, the stem diameter change amount is input into the machine learning model for training to predict the instant water demand of the crop. The prediction results of the machine learning model and the selected feature data are input into the deep neural network model for further optimization and prediction to formulate the optimal irrigation strategy. Determine the irrigation time, frequency, and water volume. Send an irrigation instruction to the control cabinet 51 of the feedback irrigation device 5 to automatically open the solenoid valve 520 connected to the irrigation device and start the feedback irrigation device 5.

[0070] Further, in some preferred embodiments of the present invention, the target stem diameter data includes: a plurality of stem diameter values and the slopes of a plurality of fitted curves of stem diameter change amounts; the steps for the monitoring terminal 4 to input the target stem diameter data into a pre-trained irrigation model and output an irrigation strategy include: plotting a stem diameter change curve based on multiple consecutive stem diameter values, and determining the stem diameter change amount based on multiple consecutive stem diameter values; performing linear fitting on the stem diameter change amount to obtain a fitted curve of the stem diameter change amount; if the slope of the fitted curve of the stem diameter change amount is less than a preset target slope, input the target stem diameter data into the pre-trained irrigation model to output an irrigation strategy.

[0071] Specifically, to determine the stem diameter change amount based on multiple consecutive stem diameter values: starting from the third day of the downloaded data, subtract the data of the first day from the data of the third day to obtain the stem diameter change value (ΔSC), and perform smoothing processing on it.

[0072] Perform linear fitting on the stem diameter change amount: perform linear fitting on the stem diameter change amounts for three consecutive days (including the current day and the previous two days) to obtain a linear regression equation with time as the independent variable and the stem diameter change value as the dependent variable.

[0073] Judge the slope of the fitted curve of the stem diameter change amount: if the slope of this linear regression equation is less than 0, it indicates that the plant is in a water-deficient state.

[0074] Input the target stem diameter data into the irrigation model: when the slope of the fitted curve of the stem diameter change amount is less than the preset target slope, input the target stem diameter data into the pre-trained irrigation model.

[0075] Output the irrigation strategy: the irrigation model outputs an irrigation strategy according to the input data, including irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device 5.

[0076] Through the above steps, it can be ensured that the plants obtain an appropriate amount of water, while avoiding over-irrigation or under-irrigation, thereby improving the water resource utilization efficiency and promoting the sustainable development of agriculture.

[0077] Step S110, the feedback irrigation device 5 executes the irrigation strategy.

[0078] Specifically, during the irrigation stage, the control cabinet 51 in the feedback irrigation device 5 integrates various sensors (such as temperature, humidity, light, soil moisture, etc.) for real-time monitoring of greenhouse environmental parameters. The data processing unit in the control cabinet 51 receives irrigation instructions and manually or automatically selects the irrigation volume and irrigation time. The control cabinet 51 is connected to the irrigation device and can automatically open or close the solenoid valve 520 and the water pump 530 connected to the irrigation device according to the instructions to achieve precise irrigation. The entire system supports remote monitoring. Managers can view the greenhouse environmental data in real time through terminals such as mobile phones and computers and perform manual intervention when necessary. The solenoid valve 520 opens when powered on, allowing water flow through; it closes when powered off, cutting off the water flow. The water pump 530 transports the water in the liquid storage tank 540 to the irrigation system according to the working pressure and flow requirements. The water flow flows into the 4 elbow drip arrows 570 from the diverter 560 in the irrigation device and finally drip-irrigates into the soil of the cultivation tank to achieve uniform irrigation. Through the above detailed steps, the feedback irrigation method based on the plant wearable device can accurately monitor the water requirements of plants and perform intelligent irrigation according to real-time data, effectively saving water resources, improving farmland management efficiency, and reducing the labor intensity of farmers.

[0079] Exemplarily, data analysis software can be used on the computer terminal to generate irrigation strategies. Click on the plants in the target experimental group in the data analysis software on the computer terminal, select a specific date range to download the stem diameter change sampling values transmitted back by the stem diameter detection device 1, uniformly zeroize the initial stem diameter data. Starting from the third day of the downloaded data, subtract the data of the first day from the data of the third day to obtain the stem diameter change amount, and perform smoothing processing on it. Starting from the third day of the downloaded data, linearly fit the stem diameter change amounts for three consecutive days (including the current day and the previous two days) every day to obtain a linear regression equation with time as the independent variable and the stem diameter change value as the dependent variable. If the slope of this linear regression equation < 0, input the stem diameter change amount into the machine learning model to train the model to predict the immediate water requirements of the crop. Input the prediction results of the machine learning model and the selected characteristic data into the deep neural network model for further optimization and prediction to formulate the optimal irrigation strategy, and determine the irrigation time, frequency, and water volume. Then send an irrigation instruction to the control cabinet 51 of the feedback irrigation device 5 to automatically open the solenoid valve 520 connected to the irrigation device and start the feedback irrigation device 5.

[0080] The flexible material 130 of the flexible wearable sensor 12 provided by the embodiment of the present invention is used to wind around the plant stalk to be monitored. The first fixator 140 and the second fixator 150 can be opened and moved to adjust the length of the flexible material 130. The data line 160 is connected to the resistor 11 through a banana head circuit. The resistor 11 obtains the sampling value (AD value) of the flexible wearable strain sensor. The wireless module of the resistor 11 transmits the data to the data receiver 2 through Bluetooth. The data receiver 2 sends the data to the cloud server 3 through, for example, a 4G network base station. The user accesses the cloud server 3 through the monitoring terminal 4 to obtain the data, and can further obtain the dynamic data of the plant stalk growth through a human-computer interaction method. Compared with detecting the soil moisture content through a soil sensor, the feedback irrigation device 5 of the stem diameter detection device 1 provided by this embodiment determines whether watering is needed by detecting the physical changes of the plant stem, monitors the actual growth condition of the plant, and more accurately meets the water demand of the plant, which helps the plant better absorb nutrients.

[0081] The present invention provides a feedback irrigation method based on a plant wearable device, which is applied to a feedback irrigation system. The system includes: a stem diameter detection device 1, a data receiver 2, a cloud server 3, a monitoring terminal 4, and a feedback irrigation device 5. The method includes: the stem diameter detection device 1 obtains the stem diameter data of the plant, and sends the stem diameter data to the data receiver 2; the data receiver 2 uploads the stem diameter data to the cloud server 3; the monitoring terminal 4 obtains the target stem diameter data of the target plant in the cloud server 3; the monitoring terminal 4 inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy, and sends the irrigation strategy to the feedback irrigation device 5; wherein, the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device 5; the feedback irrigation device 5 executes the irrigation strategy; by detecting the change in the diameter of the plant stem through the stem diameter detection device 1 and through data analysis, it can be directly known whether the plant is short of water and the amount of water required for irrigation.

[0082] Embodiment 2 Based on the above embodiments, the embodiments of the present invention provide various application scenarios of the above methods and systems.

[0083] In some preferred embodiments of the present invention, in a greenhouse environment, the feedback irrigation device 5 includes: an irrigation belt 420; the irrigation belt 420 is laid in the planting trough along the extension direction of the planting trough; the planting trough is equally divided into several monitoring areas according to the distance, and the monitoring areas except the first monitoring area and the last monitoring area along the extension direction of the irrigation belt 420 are used as target monitoring areas; at least one stem diameter detection device 1 is arranged in the target monitoring area.

[0084] Specifically, in the greenhouse, plants are evenly planted in the groove 410. The planting troughs with planted plants are divided into five equal parts according to the distance, and a stem diameter detection device 1 is bound to each plant at the 2 / 5, 3 / 5, and 4 / 5 positions, because the irrigation amount received by these plants is more uniform compared to the plants planted at the head and tail of the irrigation belt 420. And plants that are as healthy as possible, free from pests, and have similar growth states (number of leaves, plant height, stem thickness) are selected to ensure the consistency and representativeness of the data. According to the stem diameter change value data obtained by the stem diameter detection device 1 bound to the plant and transmitted to the cloud server 3 via Bluetooth, after data processing and analysis by data analysis software, a linear fit is performed on the stem diameter change amount for three consecutive days (including the current day and the previous two days). Irrigation starts when the slope is less than 0. To determine the specific irrigation amount and irrigation frequency, the plant stem diameter change data needs to be input into a machine learning model for training the model to predict the immediate water demand of the crop. The prediction results of the machine learning model and the selected feature data are input into a deep neural network model for further optimization and prediction to formulate an optimal irrigation strategy, and after determining the irrigation time, frequency, and water volume, an irrigation instruction is sent back to the control cabinet 51 of the feedback irrigation device 5 to automatically turn on the solenoid valve 520 connected to the irrigation device and start the feedback irrigation device 5, so that water drips from the irrigation belt 420 into the groove 410.

[0085] Exemplarily, refer to Figure 5 As shown in the schematic diagram of the installation position of a feedback irrigation device provided by an embodiment of the present invention in a greenhouse, a first plant 430 is evenly planted in the groove 410. For a planting trough (10 meters long) with planted plants, a healthy plant at the 4-meter, 6-meter, and 8-meter positions is selected and bound with a stem diameter detection device 1. According to the stem diameter change value data obtained by the stem diameter detection device 1 bound to the second plant 440 with the stem diameter detection device 1 and transmitted to the cloud server 3 via Bluetooth, after data processing and analysis by data analysis software, a linear fit is performed on the stem diameter change amount for three consecutive days (including the current day and the previous two days). Irrigation starts when the slope is less than 0. The irrigation time and irrigation amount are determined according to the stem diameter change amount, and an irrigation instruction is sent to the control cabinet 51 of the feedback irrigation device 5 to automatically turn on the solenoid valve 520 connected to the irrigation device and start the feedback irrigation device 5, so that water drips from the irrigation belt 420 into the groove 410.

[0086] Further, in some preferred embodiments of the present invention, in the field environment, the feedback irrigation device 5 includes: a spray irrigation mechanism; the stem diameter detection device 1 is arranged within the spray coverage intersection range of any two spray irrigation mechanisms.

[0087] Specifically, in the field installation, the third plant 460 is planted on the field ridge 450 at an equidistant interval of 30 - 31 cm. The irrigation equipment is installed in the middle of two ridges 450, and its irrigation radius is 62.65 - 71.22 cm. This irrigation equipment can water all the plants within its irrigation radius through spraying. In this embodiment, the stem diameter detection device 1 is tied to two fourth plants at the intersection position of the irrigation ranges 480 of two irrigation devices. The distance between these two plants is 88 - 90 cm. Because the closer the plant is to the center of the irrigation range 480 of the water spraying device, the greater the irrigation amount, and the obtained irrigation amount is prone to fluctuation. The irrigation amount received by the two plants within the two intersecting irrigation ranges 480 is the most uniform. Therefore, the plants in this range can represent the plants in this part of the irrigation range 480 in terms of water demand, and the physical interference factors such as water and wind on the stem diameter detection device 1 in this range are the smallest when being watered. So, the stem diameter detection device 1 is selected to be tied to the plants in the intersecting irrigation range 480. The change in the plant stem diameter obtained by the stem diameter detection device 1 is transmitted to the cloud server 3 via Bluetooth. After data processing and analysis by the data analysis software, a linear fit is performed on the change in the stem diameter for three consecutive days (including the current day and the previous two days) every day. When the slope is less than 0, irrigation starts. To determine the specific irrigation amount and irrigation frequency, the plant stem diameter change data needs to be input into the machine learning model for training the model to predict the instant water demand of the crop. The prediction result of the machine learning model and the selected feature data are input into the deep neural network model for further optimization and prediction to formulate the optimal irrigation strategy and determine the irrigation time, frequency, and amount. The irrigation time and irrigation amount are determined according to the change in the stem diameter. Watering is carried out at 8:00 every day. The watering amount of the irrigation equipment is 15 - 25.5 L, and the flow rate is 0.12 - 0.67 m 3 / h, and the working pressure is 1.7 - 2.6 kg / cm 2 . When -0.354 < slope < 0, the set watering amount is 15.0 - 19.0 L. When -0.569 < slope < -0.345, the set watering amount is 19.0 - 22.0 L. When the slope is less than -0.569, the set watering amount is 22.0 - 25.5 L. Compared with the ordinary irrigation method, the feedback irrigation method based on the plant wearable device provided in this embodiment can detect the physical changes of the plant stem, judge the actual growth condition of the plant, and decide whether watering is needed, reducing plant growth problems caused by over-irrigation or under-irrigation. And this method can reduce unnecessary watering, improve the irrigation efficiency, and reduce the labor cost.

[0088] Exemplarily, refer to Figure 6Schematic diagram of the installation position of a feedback irrigation device provided by an embodiment of the present invention in a large field. In the large field, on the ridge 450 of the large field, the third plants 460 are planted at equal intervals of 30 cm. The irrigation device is installed in the middle of two ridges 450, and the radius of its irrigation range 480 is 62 cm. This irrigation device can water all plants within its irrigation radius by spraying. In this embodiment, the stem diameter detection device 1 is tied to two fourth plants 470 at the intersection position of the irrigation ranges 480 of two irrigation devices. The distance between these two plants is 90 cm. Because the closer the plant is to the center of the irrigation range 480 of the water spraying device, the greater the irrigation amount, and the obtained irrigation amount is prone to fluctuate. The irrigation amounts received by the two plants within the two intersecting irrigation ranges 480 are the most uniform. Therefore, the plants in this range can represent the plants in this part of the irrigation range 480 in terms of water demand, and the physical interference factors such as water and wind on the stem diameter detection device 1 in this range are the smallest when being watered. So, the stem diameter detection device 1 is selected to be tied to the plants in the intersecting irrigation range 480. The change in the plant stem diameter obtained by the stem diameter detection device 1 is transmitted to the cloud server 3 via Bluetooth. After data processing and analysis by data analysis software, a linear fit is performed on the change in the stem diameter for three consecutive days (including the current day and the previous two days). When the slope is less than 0, irrigation starts. The specific determination of the irrigation amount and irrigation frequency requires inputting the plant stem diameter change data into a machine learning model to train the model to predict the instant water demand of the crop. The prediction results of the machine learning model and the selected feature data are input into a deep neural network model for further optimization and prediction to formulate an optimal irrigation strategy and determine the irrigation time, frequency, and amount. The irrigation time and irrigation amount are determined according to the change in the stem diameter. Watering is carried out at 8:00 every day, and the user can select the watering amount of the irrigation device, with a flow rate of 0.2 m 3 / h and a working pressure of 1.7 kg / cm 2 . When -0.354 < slope < 0, the set watering amount is 15.0 - 19.0 L. When -0.569 < slope < -0.345, the set watering amount is 19.0 - 22.0 L. When the slope is less than -0.569, the set watering amount is 22.0 - 25.5 L.

[0089] The stem diameter detection device 1 provided by the embodiments of the present invention uses a stem diameter detection device combining a wearable sensor 12 and a resistometer 11 to monitor the water status of plants in real time. The stem diameter detection device can monitor the expansion and contraction of plant stems in real time, thereby evaluating the water status of plants. This device evaluates the water status of plants by measuring the micro-displacement changes of plant stems. Compared with soil sensors, it provides more direct information on plant physiological responses. Cost and installation convenience: The stem diameter detection device has a lower cost and is easy to install. Compared with soil sensors, they are easier to deploy in the field or greenhouse. This low-cost and easy-to-install feature makes them more advantageous in large-scale applications.

[0090] The data provided by the combined device of the wearable sensor 12 and the resistometer 11 is directly related to the physiological state of the plant, while the data provided by the soil sensor in the comparative document may require further interpretation and conversion to be used for guiding plant watering.

[0091] The system provided by the embodiments of the present invention consumes less electricity, has a simple structure, and is convenient to carry. When used in the wild environment, a storage battery can be selected to achieve long-term power supply.

[0092] The method provided by the embodiments of the present invention can be used for different plants and can also be used to detect the stem diameter changes of plants in different environments.

[0093] Compared with elastic clips, the first and second fixators 150 on the wearable sensor 12 provided by the embodiments of the present invention can better fix the flexible material 130, making it not affected by the external environment such as wind and rain, reducing the interference with the sensor's detection of stem diameter changes, and making its measured value more accurate. Moreover, the fixator is not easy to rust and can be used repeatedly for many times.

[0094] The feedback irrigation device combined with the stem diameter detection device in the embodiments of the present invention uses intelligent and automated technologies. It can perform precise irrigation according to the physical changes of plant stems and the actual water requirements, effectively saving water resources, improving farmland management efficiency, and reducing the labor intensity of farmers. The automated control function reduces manual intervention, lowers labor costs, and at the same time improves the yield and quality of agricultural products. In addition, the feedback irrigation system is environmentally friendly, helps to adapt to climate change, and promotes the sustainable development of agriculture. In the long run, it can bring economic benefits of water conservation, increased yield and quality, and is an important tool for realizing agricultural modernization and green development.

[0095] In the method provided by the embodiment of the present invention, the plants in the intersection area of the watering ranges 480 of the two watering devices 490 will be watered twice because the watering amounts received by the two plants in the intersecting watering ranges 480 are the most uniform. Therefore, the plants in this range can represent the plants in this part of the watering range 480 in terms of water demand, and the physical interference factors such as water and wind have the least impact on the monitoring data of the stem diameter detection device in this range when it is watered. Therefore, the stem diameter detection device is selected to be bound to the plants in the intersecting watering range 480 to reduce the interference of sensor detection.

[0096] The feedback irrigation device of the embodiment of the present invention in combination with the stem diameter detection device determines whether watering is needed by detecting the physical changes of the plant stem to judge the actual growth condition of the plant, reducing plant growth problems caused by over-irrigation or under-irrigation. And this method can reduce unnecessary watering, improve irrigation efficiency, and reduce labor costs.

[0097] The method provided by the embodiment of the present invention not only makes up for the limitations of the traditional method in time continuity and dynamic response, saves manpower, but also provides new data support for analyzing the influence mechanism of environmental changes on plant physiology through the ability to observe the entire growth cycle of plants for a long time.

[0098] Embodiment III Based on the above embodiment, the embodiment of the present invention provides a feedback irrigation device based on a plant wearable device, which is applied to a feedback irrigation system. The system includes: a stem diameter detection device 1, a data receiver 2, a cloud server 3, a monitoring terminal 4, and a feedback irrigation device 5; see Figure 7 The structural schematic diagram of a feedback irrigation device based on a plant wearable device provided by the embodiment of the present invention shown, the device includes: A stem diameter data processing module 610, configured to obtain the stem diameter data of the plant from the stem diameter detection device 1 and send the stem diameter data to the data receiver 2; A data transmission module 620, configured to upload the stem diameter data from the data receiver 2 to the cloud server 3; A target data processing module 660, configured to obtain the target stem diameter data of the target plant in the cloud server 3 by the monitoring terminal 4; An irrigation strategy determination module 640, configured to input the target stem diameter data into a pre-trained irrigation model by the monitoring terminal 4, output an irrigation strategy, and send the irrigation strategy to the feedback irrigation device 5; wherein, the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device 5; An irrigation strategy execution module 650, configured to execute the irrigation strategy by the feedback irrigation device 5.

[0099] Further, in some preferred embodiments of the present invention, the target stem diameter data includes: a plurality of stem diameter values and the slopes of a plurality of fitting curves of stem diameter change amounts; an irrigation strategy determination module 640, configured to draw a stem diameter change curve based on multiple consecutive stem diameter values, and determine the stem diameter change amount based on multiple consecutive stem diameter values; perform linear fitting on the stem diameter change amount to obtain a fitting curve of the stem diameter change amount; if the slope of the fitting curve of the stem diameter change amount is less than a preset target slope, input the target stem diameter data into a pre-trained irrigation model to output an irrigation strategy.

[0100] Further, in some preferred embodiments of the present invention, the stem diameter detection device 1 includes: a wearable sensor 12 and a resistometer 11; the wearable sensor 12 includes: a flexible material 130 and a data line 160; the flexible material 130 is wound around the stem of the plant to be monitored; both ends of the flexible material 130 are connected to the resistometer 11 through the data line 160.

[0101] Further, in some preferred embodiments of the present invention, the wearable sensor 12 includes: a first fixator 140 and a second fixator 150; both the first fixator 140 and the second fixator 150 are connected to the flexible material 130, and the first fixator 140 and the second fixator 150 are attracted to each other through built-in magnets to wind and fix the flexible material 130 on the stem of the plant.

[0102] Further, in some preferred embodiments of the present invention, the flexible material 130 includes: an elastic conductive inner core and an elastic insulating outer sheath; the elastic insulating outer sheath is sleeved outside the elastic conductive inner core.

[0103] Further, in some preferred embodiments of the present invention, the elastic conductive inner core is a silk-based conductive carbon fabric inner core; the elastic insulating outer sheath is a polydimethylsiloxane elastic insulating outer sheath or an aliphatic-aromatic random copolyester elastic insulating outer sheath.

[0104] Further, in some preferred embodiments of the present invention, in a greenhouse environment, the feedback irrigation device 5 includes: an irrigation belt 420; the irrigation belt 420 is laid in the planting trough along the extending direction of the planting trough; the planting trough is equally divided into several monitoring areas according to the distance, and the monitoring areas except the first monitoring area and the last monitoring area along the extending direction of the irrigation belt 420 are used as target monitoring areas; at least one stem diameter detection device 1 is arranged in the target monitoring area.

[0105] Further, in some preferred embodiments of the present invention, in a field environment, the feedback irrigation device 5 includes: a sprinkler irrigation mechanism; the stem diameter detection device 1 is arranged within the overlapping range of the sprinkler coverage of any two sprinkler irrigation mechanisms.

[0106] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working process of the feedback irrigation device based on the plant wearable device described above can refer to the corresponding process in the embodiments of the feedback irrigation method based on the plant wearable device described above, and will not be elaborated here.

[0107] Embodiment 4 The embodiment of the present invention further provides an electronic device for running the feedback irrigation method based on the plant wearable device; see Figure 8 The schematic structural diagram of an electronic device provided by the embodiment of the present invention shown in the figure. The electronic device includes a memory 700 and a processor 701. Among them, the memory 700 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor 701 to implement the above-mentioned feedback irrigation method based on the plant wearable device.

[0108] Furthermore, Figure 8 The electronic device shown in the figure further includes a bus 702 and a communication interface 703. The processor 701, the communication interface 703, and the memory 700 are connected through the bus 702.

[0109] Among them, the memory 700 may include a high-speed random access memory 700 (RAM, Random Access Memory), and may also include a non-volatile memory 700 (non-volatile memory), such as at least one disk memory 700. Through at least one communication interface 703 (which can be wired or wireless), the communication connection between the system network element and at least one other network element can be realized, and the Internet, wide area network, local area network, metropolitan area network, etc. can be used. The bus 702 can be an ISA bus 702, a PCI bus 702, or an EISA bus 702, etc. The bus 702 can be divided into an address bus 702, a data bus 702, a control bus 702, etc. For the convenience of representation, Figure 8 only a bidirectional arrow is used in the figure, but it does not mean that there is only one bus 702 or one type of bus 702.

[0110] The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 701 or the instructions in the form of software. The above-mentioned processor 701 may be a general-purpose processor 701, including a central processing unit 701 (CPU for short), a network processor 701 (NP for short), etc.; it may also be a digital signal processor 701 (DSP for short), an application specific integrated circuit (ASIC for short), a field-programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute each method, step, and logic block diagram disclosed in the embodiments of the present invention. The general-purpose processor 701 may be a microprocessor 701 or the processor 701 may also be any conventional processor 701, etc. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed and completed by the hardware decoding processor 701, or executed and completed by a combination of the hardware and software modules in the decoding processor 701. The software module may be located in a mature storage medium in the art such as a random access memory 700, a flash memory, a read-only memory 700, a programmable read-only memory 700, or an electrically erasable programmable memory 700, a register, etc. This storage medium is located in the memory 700, and the processor 701 reads the information in the memory 700 and combines its hardware to complete the steps of the method in the foregoing embodiments.

[0111] Embodiments of the present invention also provide a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are called and executed by the processor 701, the computer-executable instructions cause the processor 701 to implement the above-mentioned feedback irrigation method based on the plant wearable device. For the specific implementation, reference may be made to the method embodiments, which will not be elaborated herein.

[0112] The computer program product of the feedback irrigation method, device, and electronic device based on the plant wearable device provided by the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the foregoing method embodiments. For the specific implementation, reference may be made to the method embodiments, which will not be elaborated herein.

[0113] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems and / or devices described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0114] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0115] If the above-mentioned function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memory 700 (ROM, Read-Only Memory), random access memory 700 (RAM, Random Access Memory), magnetic disks, or optical discs and other various media that can store program codes.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A feedback irrigation method based on a plant wearable device, characterized in that, Applied to a feedback irrigation system, the system includes: a stem diameter detection device, a data receiver, a cloud server, a monitoring terminal, and a feedback irrigation device; the method includes: The stem diameter detection device acquires the stem diameter data of the plant and sends the stem diameter data to the data receiver; The data receiver uploads the stem diameter data to the cloud server; The monitoring terminal acquires the target stem diameter data of the target plant in the cloud server; The monitoring terminal inputs the target stem diameter data into a pre-trained irrigation model, outputs an irrigation strategy, and sends the irrigation strategy to the feedback irrigation device; wherein, the irrigation strategy includes: irrigation time, irrigation volume, irrigation flow rate, and the working pressure of the feedback irrigation device; The feedback irrigation device executes the irrigation strategy.

2. The feedback irrigation method based on the plant wearable device according to claim 1, wherein, The target stem diameter data includes: multiple stem diameter values and the slope of the fitting curve of multiple stem diameter change amounts; the steps of the monitoring terminal inputting the target stem diameter data into a pre-trained irrigation model and outputting an irrigation strategy include: Drawing a stem diameter change curve based on multiple consecutive stem diameter values and determining the stem diameter change amount based on multiple consecutive stem diameter values; Performing linear fitting on the stem diameter change amount to obtain the fitting curve of the stem diameter change amount; If the slope of the fitting curve of the stem diameter change amount is less than a preset target slope, input the target stem diameter data into a pre-trained irrigation model and output an irrigation strategy.

3. The feedback irrigation method based on the plant wearable device according to claim 1, wherein The stem diameter detection device includes: a wearable sensor and a resistor; the wearable sensor includes: a flexible material and a data line; The flexible material is wound around the stem of the plant to be monitored; Both ends of the flexible material are connected to the resistor through the data line.

4. The feedback irrigation method based on the plant wearable device according to claim 3, wherein The wearable sensor includes: a first fixator and a second fixator; Both the first fixator and the second fixator are connected to the flexible material, and the first fixator and the second fixator are attracted to each other through an internal magnet to fix the flexible material wound around the stem of the plant.

5. The feedback irrigation method based on a plant wearable device according to claim 3, wherein The flexible material includes: an elastic conductive inner core and an elastic insulating outer sheath; the elastic insulating outer sheath is sleeved outside the elastic conductive inner core.

6. The feedback irrigation method based on the plant wearable device according to claim 5, wherein The elastic conductive inner core is a silk-based conductive carbon fabric inner core; The elastic insulating outer sheath is a polydimethylsiloxane elastic insulating outer sheath or an aliphatic-aromatic random copolyester elastic insulating outer sheath.

7. The feedback irrigation method based on the plant wearable device according to any one of claims 1 to 6, characterized in that, In a greenhouse environment, the feedback irrigation device includes: an irrigation belt; the irrigation belt is laid in the planting trough along the extending direction of the planting trough; The planting trough is equally divided into several monitoring areas according to the distance, and the monitoring areas except the first monitoring area and the last monitoring area along the extending direction of the irrigation belt are used as target monitoring areas; At least one of the stem diameter detection devices is arranged in the target monitoring area.

8. The feedback irrigation method based on the plant wearable device according to any one of claims 1 to 6, characterized in that, In a field environment, the feedback irrigation device includes: a sprinkler irrigation mechanism; The stem diameter detection device is arranged within the overlapping range of the spray coverage of any two of the sprinkler irrigation mechanisms.

9. A feedback irrigation device based on a plant wearable device, characterized in that, Applied to a feedback irrigation system, the system includes: a stem diameter detection device, a data receiver, a cloud server, a monitoring terminal, and a feedback irrigation device; the apparatus includes: A stem diameter data processing module, configured to obtain the stem diameter data of the plant by the stem diameter detection device and send the stem diameter data to the data receiver; A data transmission module, configured to upload the stem diameter data from the data receiver to the cloud server; A target data processing module, configured to obtain the target stem diameter data of the target plant in the cloud server by the monitoring terminal; An irrigation strategy determination module, configured to input the target stem diameter data into a pre-trained irrigation model by the monitoring terminal, output an irrigation strategy, and send the irrigation strategy to the feedback irrigation device; wherein the irrigation strategy includes: irrigation time, irrigation amount, irrigation flow rate, and the working pressure of the feedback irrigation device; An irrigation strategy execution module, configured to execute the irrigation strategy by the feedback irrigation device.

10. An electronic device, characterized in that, It includes a processor and a memory, the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the feedback irrigation method based on the plant wearable device according to any one of claims 1 to 8 above.

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