Automatic drip irrigation device for greenhouse

Abstract

The utility model relates to the technical field of drip irrigation, and particularly discloses an automatic drip irrigation device for a greenhouse, which adopts a branch pipe insertion mode, can flexibly adjust the water outlet position of a branch pipe, and a main pipe can adopt an exposed installation or top installation mode, does not influence cultivation, is not easy to damage, and is convenient to use. A humidity sensor for detecting soil humidity and a flow meter for detecting flow velocity are arranged in each branch pipe terminal, so that the drip irrigation speed and the water quantity can be adjusted in real time according to the soil humidity, accurate drip irrigation is realized, the utilization rate of water resources is improved, the humidity in the greenhouse is further reduced, and diseases and pests are reduced; overall detection and joint control are realized, and intelligent agriculture is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of drip irrigation, in particular to an automatic drip irrigation device for a greenhouse. Background Art

[0002] In greenhouse cultivation, irrigation methods mostly adopt flood irrigation and drip irrigation. Flood irrigation uses a large amount of water and causes a large amount of water evaporation, which causes the temperature in the greenhouse to drop, the temperature rise rate is slow, the humidity in the greenhouse is high, and pests are easy to breed, which increases the use of pesticides and affects the growth rate of crops. Therefore, more modern greenhouses have begun to use drip irrigation for watering;

[0003] In the prior art, drip irrigation mostly adopts the method of pre-buried drip irrigation pipes, puncturing capillaries on the surface of the drip irrigation pipes so that it can directly act on the roots of plants, reduce water consumption and evaporation, and reduce temperature drop and humidity in the greenhouse. However, due to the concealed pipe design, it cannot move normally. During farming, it needs to be avoided to avoid damage, and during planting, its position needs to be avoided. During secondary use, there is a distance between the plant roots and the pipes, the use effect is reduced, and it does not have a monitoring function, and cannot adjust the irrigation mode according to the soil conditions. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic drip irrigation device for a greenhouse. The device adopts the form of branch pipe insertion, and the position of the branch pipe water outlet can be flexibly adjusted. The main pipe can be installed in an open or top manner, which does not affect farming and is not easy to be damaged. The branch pipe terminal is equipped with a humidity sensor for soil moisture detection and a flow meter for flow rate detection. The device can adjust the drip irrigation speed and water volume in real time according to the soil moisture, realize precise drip irrigation, improve the utilization rate of water resources, further reduce the humidity in the greenhouse, reduce diseases and insect pests, and is equipped with a communication unit to conduct regional networking, realize overall detection and joint control, and realize smart agriculture, which can effectively solve the problems in the background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an automatic drip irrigation device for a greenhouse, comprising:

[0006] The valve part includes an electric valve connected to an external main pipeline;

[0007] A control unit, which has a flow meter for flow rate detection, a humidity sensor for soil moisture detection, a control unit for driving an electric valve, and a communication module for communication;

[0008] The water outlet part comprises an outer sleeve fixedly connected to the valve part and communicated with the inner cavity, a probe electrically connected to the humidity sensor is fixedly arranged at the bottom end of the outer sleeve, and capillary pores are arranged on the surface of the outer sleeve.

[0009] As a preferred technical solution of the present utility model, a porous net is pasted on the inner wall of the outer sleeve tube;

[0010] The porous net is preferably a porous wire net, which can reduce the water outlet pressure at the capillary pores, reduce the scouring of the water outlet on the soil or plant roots, and enable the water outlet to change from a thin stream to a water droplet shape.

[0011] As a preferred technical solution of the present utility model, an inner core tube is arranged at the axis of the outer sleeve tube, and the connecting wire of the probe passes through the inner core tube and is connected to the humidity sensor in the control part;

[0012] Place the probe at the bottom end of the outer sleeve tube so that it can be inserted into the deep soil together with the outer sleeve tube, and its detection result is closer to the humidity data at the plant root. Moreover, the connecting wire passes through the inner core tube, which helps to protect it from corrosion and wear and extends the service life.

[0013] As a preferred technical solution of the present utility model, the valve part further includes a Y-shaped filter, and the Y-shaped filter is connected in series behind the electric valve;

[0014] By adding a Y-shaped filter, the pipeline water is filtered to prevent blockage of the terminal equipment.

[0015] As a preferred technical solution of the present utility model, a water distribution valve is connected in series at the upstream end of the water outlet part, and a quick-connect plug is arranged at the water outlet of the water distribution valve, which can be connected to the auxiliary water outlet part through a pipeline, and the auxiliary water outlet part has the same structure as the water outlet part;

[0016] By adding a water distribution valve, more auxiliary water outlet parts can be connected. A plurality of groups of auxiliary water outlet parts and the water outlet part are inserted around the crop roots together. All the water outlets of one crop share a set of control parts, realizing precise control of a single crop.

[0017] As a preferred technical solution of the present utility model, the control part further includes a storage module for storing the flow meter, humidity sensor and equipment number, and an indicator light for indicating the working state;

[0018] The storage module is added to store the data of the flow meter and temperature sensor, and then uploaded to the cloud through the communication module for processing and analysis on the upper computer, and then the electric valve is controlled to act to control the water outlet state and water output, realizing a closed loop of control. At the same time, the indicator light can clearly display the current working state, facilitating the inspection of on-site patrol personnel.

[0019] As a preferred technical solution of the present utility model, the communication module includes a wireless network communication module and a near-field communication module. The use of the near-field communication module facilitates short-distance information transmission. For example, by adding a radio frequency module and using a handheld terminal with the same module, the data in its internal storage module can be read and instructions can be sent to the control unit, thus realizing local control.

[0020] Compared with the prior art, the present utility model at least includes the following beneficial effects:

[0021] 1. The automatic drip irrigation device for this greenhouse adopts the form of inserting the branch pipe, which can flexibly adjust the water outlet position of the branch pipe, and the main pipe can be installed openly or on the top, without affecting farming and not easily damaged;

[0022] 2. The equipment terminal integrates a humidity sensor for soil humidity detection, which can detect the soil humidity in the irrigation area. It can be used for humidity detection before irrigation to allocate the irrigation water volume, or for soil humidity detection during irrigation to verify the irrigation effect and adjust the remaining irrigation method, realizing precise irrigation;

[0023] 3. At the same time, a communication module is integrated in the equipment to realize the networking of multiple groups of terminals and data cloud uploading, facilitating network control and realizing smart agriculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present utility model;

[0025] Figure 2 It is a sectional view of the present utility model;

[0026] Figure 3 It is a control logic diagram of the present utility model.

[0027] In the figure: 1. Valve part; 101. Electric valve; 102. Y-shaped filter; 2. Control part; 201. Quick-connect plug; 202. Equipment box; 203. Indicator light; 3. Water outlet part; 301. Outer sleeve; 302. Porous net; 303. Inner core pipe; 4. Probe; 5. Secondary water outlet part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 - 3, the present utility model provides a technical solution: an automatic drip irrigation device for greenhouse, which adopts the form of inserting branch pipes, can flexibly adjust the water outlet position of the branch pipes, and the main pipe can be installed openly or on the top, without affecting farming, not easily damaged, and the terminal of the branch pipe is internally provided with a humidity sensor for soil humidity detection and a flowmeter for flow rate detection, which can adjust the drip irrigation speed and water volume in real time according to the soil humidity, realize precise drip irrigation, improve the utilization rate of water resources, further reduce the humidity in the shed, reduce pests and diseases, and is equipped with a communication unit for networking within the area to realize overall detection and joint control, and realize smart agriculture. Specifically, it includes,

[0030] The valve part 1 includes an electric valve 101 connected to an external main pipeline; the valve part 1 further includes a Y-shaped filter 102, and the Y-shaped filter 102 is connected in series at the rear end of the electric valve 101; by adding the Y-shaped filter 102, the pipeline water is filtered to avoid blocking the terminal equipment, and by placing the Y-shaped filter 102 behind the electric valve 101, the filter screen can be replaced after the valve is closed, which is more suitable for scenarios with poor water quality.

[0031] The control part 2 is internally provided with a flowmeter for flow rate detection, a humidity sensor for soil humidity detection, a control unit for driving the electric valve 101, and a communication module for communication; the communication module includes a wireless network communication module and a near-field communication module. The near-field communication module is convenient for short-distance information transmission. For example, by installing a radio frequency module and using a handheld terminal with the same module, the data in its internal storage module can be read and instructions can be sent to the control unit, that is, local control is realized;

[0032] The control part 2 further includes a storage module for storing the flowmeter, humidity sensor and equipment number, and an indicator light 203 for indicating the working state; the storage module is added to store the data of the flowmeter and temperature sensor, and then uploaded to the cloud through the communication module for processing and analysis on the upper computer, and then the electric valve 101 is controlled to act to control the water outlet state and water volume, realizing the closed-loop control. At the same time, the indicator light can clearly display the current working state, which is convenient for the inspection of on-site patrol personnel.

[0033] The control unit 2 is preferably an ESP8266, which supports the 2.4GHz WiFi network and can perform local data processing. According to the detection data of the humidity sensor, it controls the opening and closing state of the electric valve 101. According to the detection result of the flow meter, it adjusts the opening amount of the electric valve 101. In cooperation with the NFC (Near Field Communication, hereinafter referred to as NFC) coil, it uses RFID technology to achieve near-field communication. By using a mobile phone with NFC function, the flow meter data and humidity sensor data stored in the ESP8266 can be read, the historical irrigation effect can be checked, and control instructions can be issued to control the operation of the electric valve 101 and adjust the irrigation water volume and speed.

[0034] Among them, the humidity sensor is preferably an FDR frequency domain sensor, which has the advantages of high precision, convenient signal acquisition, and low cost. The flow meter is preferably a Venturi flow meter, which calculates the liquid flow in the pipeline according to the pressure difference at the variable diameter position in the pipeline, and the measurement result is accurate and reliable.

[0035] The circuit parts of the humidity sensor, the flow meter, and the control unit 2 are preferably placed in the equipment box 202 fixed to the valve unit 1. The equipment box 202 is preferably a waterproof box and is internally provided with a power supply module for supplying power to each electronic component.

[0036] The water outlet part 3 includes an outer sleeve 301 fixedly connected to the valve unit 1 and having a communicating inner cavity. A probe 4 electrically connected to the humidity sensor is fixedly arranged at the bottom end of the outer sleeve 301, and capillary holes are arranged on the surface of the outer sleeve 301.

[0037] A porous mesh 302 is pasted on the inner wall of the outer sleeve 301; the porous mesh 302 is preferably a porous wire mesh, which can reduce the water outlet pressure at the capillary holes, reduce the scouring of the water outlet on the soil or plant roots, and can change the water outlet from a thin stream to a water droplet shape.

[0038] An inner core tube 303 is arranged at the axis of the outer sleeve 301, and the connecting wire of the probe 4 passes through the inner core tube 303 and is connected to the humidity sensor in the control unit 2; the probe 4 is placed at the bottom end of the outer sleeve 301 so that it can be inserted into the deep soil together with the outer sleeve 301, and its detection result is closer to the humidity data at the plant root. Moreover, the connecting wire passes through the inner core tube 303, which helps to protect it from corrosion and wear and extends the service life.

[0039] A water diversion valve is connected in series at the upstream end of the water outlet part 3. A quick-connect plug 201 is arranged at the water outlet of the water diversion valve, and the auxiliary water outlet part 5 can be connected through a pipeline. The auxiliary water outlet part 5 has the same structure as the water outlet part 3. By adding a water diversion valve, more auxiliary water outlet parts 5 can be connected. Multiple groups of auxiliary water outlet parts 5 and the water outlet part 3 are inserted around the crop roots together. All the water outlets of one crop share a set of control parts 2 to achieve precise control of a single crop. Among them, the water diversion valve is behind the flowmeter to facilitate the flowmeter to monitor the flow of all the water outlets.

[0040] During use:

[0041] Taking the planting of potted plants and other economic in-greenhouse crops in a greenhouse as an example, their roots do not directly contact the soil in the greenhouse and need to be supplied with water separately. Traditional pre-buried pipeline drip irrigation equipment cannot directly supply water to potted crops.

[0042] When using this automatic drip irrigation device for a greenhouse, first, the main pipeline is preferably laid in a suspended manner in the greenhouse. The main pipeline is connected and installed with this device in a tee-and-supplemented-with-hose manner. Then, the water outlet part 3 and the auxiliary water outlet part 5 are inserted around the roots of the potted plants into the soil to establish a regional network coverage in the greenhouse. The communication modules inside each device are connected to establish communication, and the device numbers stored in the storage module are read to match the physical positions corresponding to each device number or the preset plant identification codes. According to the irrigation modes corresponding to different plant identification codes pre-stored in the host computer, that is, parameters such as different irrigation times, irrigation amounts, target soil humidity, and soil humidity growth rates, precise regulation of the corresponding devices is carried out;

[0043] For example, for drought-resistant crops with relatively small water requirements and relatively low required soil humidity, when the plant identification codes are matched, the host computer immediately transmits the corresponding irrigation mode to the storage module of the terminal through the communication module. The humidity sensor of the terminal detects the soil humidity and feeds back the result to the control unit for matching with the data in the storage unit, and then controls the electric valve 101 to regulate the water supply amount. During the drip irrigation process, the humidity sensor continuously monitors the soil humidity. When the humidity reaches the standard, the electric valve 101 is immediately controlled by the control unit to close. During the process, the action data of the electric valve 101, and the recorded data of the flowmeter and the humidity sensor are all stored in the storage module and uploaded to the host computer through the communication module, which is convenient for querying the watering status on the host computer, and the data in the storage module can also be directly read through a handheld terminal with near-field communication function, which is more convenient.

[0044] At the same time, the indicator lights 203 integrated in the device are preferably red, green, and yellow indicator lights. Red represents a fault, green represents normal operation, and yellow represents stop work, so that on-site inspection personnel can quickly understand the on-site situation and intervene and adjust in time.

[0045] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic drip irrigation device for a greenhouse, characterized in that: include, The valve part (1) comprises an electric valve (101) connected to an external main pipeline; A control unit (2) having a flow meter for flow rate detection, a humidity sensor for soil humidity detection, a control unit for driving the electric valve (101), and a communication module for communication; The water outlet portion (3) comprises an outer sleeve (301) fixedly connected to the valve portion (1) and communicating with the inner cavity, a probe (4) electrically connected to the humidity sensor being fixedly arranged at the bottom end of the outer sleeve (301), and capillary pores being arranged on the surface of the outer sleeve (301).

2. The automatic drip irrigation device for greenhouse according to claim 1, characterized in that: A porous mesh (302) is adhered to the inner wall of the outer sleeve (301).

3. The automatic drip irrigation device for greenhouse according to claim 1, characterized in that: An inner core tube (303) is arranged at the axis of the outer sleeve (301), and a connecting line of the probe (4) passes through the inner core tube (303) and is connected to a humidity sensor in the control unit (2).

4. The automatic drip irrigation device for greenhouse according to claim 1, characterized in that: The valve part (1) further comprises a Y-shaped filter (102), and the Y-shaped filter (102) is connected in series to the rear end of the electric valve (101).

5. The automatic drip irrigation device for greenhouse according to claim 1, characterized in that: A water diversion valve is serially connected to the upstream end of the water outlet (3); a water outlet of the water diversion valve is provided with a quick-connect plug (201) and can be connected to an auxiliary water outlet (5) via a pipeline; the auxiliary water outlet (5) has the same structure as the water outlet (3).

6. The automatic drip irrigation device for a greenhouse according to any one of claims 1 to 5, characterized in that: The control unit (2) further comprises a storage module for storing the flow meter, the humidity sensor and the equipment number, and an indicator light (203) for indicating the working status.

7. The automatic drip irrigation device for greenhouse according to claim 6, characterized in that: The communication module includes a wireless network communication module and a near field communication module.

Images