CN106069381A - A kind of warmhouse booth collection rain joint fills automatic control system and method - Google Patents

Abstract

The invention discloses an automatic control system for rain collection and irrigation saving in a greenhouse and an implementation method thereof. The system includes a rain collection system in a greenhouse, a pipeline system and an automatic control system for saving irrigation; The rain surface, the confluence trough set at the lower end of the rain collection surface and the rain collection tank set on the ground or underground, the rain collection tank is connected to the confluence tank through the water guide pipe; the pipeline system includes water transmission and distribution pipes and capillary pipes; the automatic control system for saving irrigation includes A DC power supply, a central intelligent controller, a soil moisture sensor set in the soil, a water level sensor set inside the rain collection tank and a water pump set at the bottom of the rain collection tank. The invention provides water resource guarantee for facility agricultural production, provides technical means for water-saving irrigation automation, and realizes automatic control of different irrigation quotas at the same time.

Description

An automatic control system and method for rain collection and irrigation in greenhouses

technical field

The invention relates to the technical field of rainwater collection and water-saving irrigation.

Background technique

The facility agricultural production technology mainly in the form of solar greenhouses and plastic greenhouses provides people with fresh off-season vegetables, fruits, edible fungi and flowers, etc., which is of great significance to improving people's living standards and increasing farmers' income. Due to the lack of water sources, greenhouses in some areas can only adopt the dry farming mode. Due to the lack of water source in dry farming greenhouse cultivation, firstly, it leads to limited crop varieties and backward production methods; secondly, it is difficult to improve product quality and yield, and the production efficiency is not high; thirdly, the applied chemical fertilizers and pesticides cannot directly penetrate into the root system quickly, causing pesticide Fertilizer waste and phytotoxicity residue.

At present, in my country's agricultural production, the contradiction between the supply and demand of water resources is prominent, most areas lack water resources, the seasonal distribution of rainfall is uneven, droughts and floods alternate, and rainstorm disasters occur from time to time. Rainwater collection can alleviate rainwater disasters and alleviate the contradiction between supply and demand of water resources; where there is no irrigation water source, rainwater has become the only water source for agricultural production, and it cannot be done without collection, and rainwater collection has become an important guarantee for facility agricultural production; Rain can greatly save groundwater resources, reduce the amount of groundwater extraction, and help solve ecological and environmental problems such as land subsidence and down funnels. Efficient use of rainwater technology has become the main way to develop agricultural production in dryland agricultural areas, especially to carry out facility agricultural production and realize agricultural industrialization and intensive management. In semi-arid areas, the water self-sufficiency mode of collecting rain on the surface of plastic greenhouses and efficient irrigation in the sheds is a practical and economical way of rainwater utilization.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic control system for rain collection and irrigation in greenhouses and its implementation method, which can provide water resource guarantee for protected agricultural production, provide technical means for water-saving irrigation automation, and realize different irrigation quotas at the same time. automation control.

In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

An automatic control system for rain collection and irrigation in greenhouses, the structure of which includes a rain collection system in greenhouses, a piping system and an automatic control system for irrigation savings; the rain collection system in greenhouses includes a rain collection surface located on the outer periphery of the top of the greenhouse , the confluence tank arranged at the lower end of the rain collection surface and the rain collection tank arranged on the ground or underground, the rain collection tank is connected to the confluence tank through a water guide pipe; the pipeline system includes water transmission and distribution pipelines and capillary pipes, the The water transmission and distribution pipeline is provided with valves; the automatic irrigation control system includes a DC power supply, a central intelligent controller electrically connected to the DC power supply, and a soil moisture sensor set inside the soil for soil moisture measurement and located at the signal input end of the central intelligent controller. The sensor, the water level sensor arranged inside the rain collection tank for measuring the water level accumulation and located at the signal input end of the central intelligent controller, and the water pump arranged at the bottom of the rain collection tank and located at the signal output end of the central intelligent controller.

As a preferred technical solution of the present invention, in the greenhouse rain collection system, the rain collection surface is an impermeable inclined membrane surface of the greenhouse, and the membrane surface is divided into upper and lower parts by the confluence trough, wherein The lower end of the upper membrane surface is fixed on the inner side of the confluence tank to direct rainwater into the confluence tank, while the upper end of the lower membrane surface is fixed on the outside of the confluence tank to prevent rainwater from flowing out.

As a preferred technical solution of the present invention, in the greenhouse rain collection system, the confluence trough is horizontally fixed on the frame of the greenhouse, one end of the confluence trough in the axial direction is sealed, and the other end of the confluence trough is connected to the The rain pools are connected.

As a preferred technical solution of the present invention, in the greenhouse rain collection system, the rain collection pool is arranged outside the greenhouse and located underground, with a buried depth of 30-70 cm, and a water inlet is left on the upper part of the rain collection pool and the water outlet; the volume of the rain collection tank is determined according to the following formula: V=W _set -W _use ; where: V—the volume of the rain collection tank, W _set —water collection in the rainy season, W _use —water consumption in the rainy season.

As a preferred technical solution of the present invention, in the pipeline system, the water transmission and distribution pipeline adopts a plastic hose and includes a main pipe and several branch pipes, and the main pipe and the branch pipes are connected by a tee, an elbow, etc.; the capillary pipe The inlaid patch type drip irrigation belt is used, and is connected with the water transmission and distribution pipeline through a bypass.

As a preferred technical solution of the present invention, in the automatic irrigation control system, the DC power supply adopts a solar charging system, which includes a solar panel, a charging controller and a storage battery; the signal input of the central intelligent controller Connect the soil moisture sensor and the water level sensor at the same time. These two groups of sensors form a series mode with double constraints. When the voltage signal input from the soil moisture sensor to the central intelligent controller exceeds the preset value, the central intelligent controller drives the alarm output channel K1 Closed, and the voltage signal input by the water level sensor to the central intelligent controller is within the preset value range so that the central intelligent controller drives the alarm output channel K2 to close, and the central intelligent controller controls the water pump to turn on when the two conditions are met at the same time; One of K1 and K2 is disconnected, and the water pump is turned off.

As a preferred technical solution of the present invention, the automatic irrigation control system also includes a multi-processing irrigation quota reduction sub-system. The intelligent time controller is an intelligent time controller for device communication. This intelligent time controller is a programmable time control device with multiple relay output channels. Solenoid valves are set on the pipelines of its different output channels. The working mode of the intelligent time controller is set as Timing mode, set its channels 1, 2, 3, ..., n to be connected at the same time for a certain time a second, and then each channel is turned off for a certain time b seconds in turn. When a certain channel m is disconnected, the previous channels 1 and 2 , 3...m-1 continues to be disconnected, when the last channel n is also disconnected for b seconds, each channel is connected again at the same time, and the cycle is performed; in this way, channel 1 is disconnected for n×b seconds every time it is connected for a second , channel 2 will be disconnected for (n-1)×b seconds every time it is connected for a second, channel 3 will be disconnected for (n-2)×b seconds every time it is connected for a second, channel n will be disconnected for b every time it is connected for a second Seconds, to achieve automatic control of irrigation quota reduction in different areas.

An implementation method for automatic control of rainwater collection and irrigation in greenhouses, using the impermeable and inclined membrane surface of the greenhouse as the rainwater collection surface to collect rainwater from natural rainfall, and store it in the rainwater collection pool through the confluence tank, which is a greenhouse Provide water source for irrigation; under the condition of DC power supply, the central intelligent controller provides DC power for the soil moisture sensor and water level sensor respectively through the power output channel, and at the same time receives the soil moisture sensor and water level sensor respectively through two voltage input channels Humidity status and two sets of different voltage signals sent back from the water level of the rain collection tank. The two different voltage signals will be compared with the preset alarm voltage value respectively. When the two conditions, that is, the voltage value represented by soil humidity is lower than the preset When the set alarm voltage value and the voltage value represented by the water level in the rain collection tank are higher than the preset alarm voltage value, the central intelligent controller drives the water pump through the alarm output channel to start pumping water, and communicates with the water supply and distribution pipeline. The capillary transports the rainwater collected in the rain collection tank to the root soil of the crops to provide water for the normal growth of the crops; and when the soil humidity increases to the sum of the preset alarm value and the return difference value, or the water level in the rain collection tank drops to the preset When there is a difference between the set alarm value and the hysteresis value, the central intelligent controller will drive the water pump through the alarm output channel to cut off the power to stop pumping; in the irrigation operation, a multi-processing irrigation quota reduction subsystem is further set up, and different settings are made in the timing cycle. The opening time of the channel is gradually reduced in order to realize the automatic control of the irrigation quota reduction in different treatment areas.

As a preferred technical solution of the present invention, the soil moisture sensor is buried deep in the root layer of the crop, the field water holding capacity of the soil is x, the corresponding voltage signal is o, and the alarm voltage value of the central intelligent controller is preset to be p, the p/o of soil field water holding capacity, the hysteresis value is q=o-p, when the soil water content is lower than p/o, the central intelligent controller will drive the alarm output channel to close, if the water level of the rain collection pool is satisfied at the same time High and low constraints, the solenoid valve opens to start irrigation; when the soil moisture content increases to the sum o of the preset hysteresis value q and the alarm value p, the central intelligent controller will drive the alarm output channel to disconnect, and the solenoid valve will be closed.

As a preferred technical solution of the present invention, four treatments are set during the operation of the multi-treatment irrigation quota reduction sub-system, and the irrigation quotas of the four treatments are respectively 30% for the first treatment, 20% for the second treatment, and 20% for the third treatment. 10%, processing four as a comparison; the intelligent time controller communicates with the central intelligent controller and receives the control signal for turning on watering, and sets the channels 1 and 2 respectively corresponding to the intelligent time controller and processing one, processing two, and processing three , 3 are turned on at the same time for 1 minute, then channel 1 is closed for 6 seconds, then channel 2 is closed for 6 seconds, at this time channel 1 continues to be closed, then channel 3 is closed for 6 seconds, at this time channel 1 and 2 continue to be closed, then channel 1, 2, 3 and then open at the same time, channel 4 is always open; cycle.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

The present invention faces the needs of agricultural modernization and water resources security, and focuses on the problems of low utilization rate of precipitation resources and low automation level of water-saving irrigation, researches on the automatic control system and method of rainwater collection and irrigation in greenhouses, and integrates innovative modern sensors Technology and intelligent control technology realize automatic control of different irrigation quotas, provide water resource guarantee for facility agricultural production, and provide technical means for water-saving irrigation automation. The present invention can use the film surface of the greenhouse to automatically collect rainwater, and carry out an automatic control system and method for water-saving irrigation in a timely and appropriate amount according to the soil humidity (water content), so as to improve the utilization rate of natural precipitation resources and the automation level of water-saving irrigation. It has the characteristics of energy saving, environmental protection, green and low carbon. The system and method of the present invention can be widely used in facility agricultural production and water-saving irrigation in vast water-deficient areas in northern my country, improve the utilization rate of precipitation resources and irrigation guarantee rate, reduce the dependence of greenhouse production water on the outside, save irrigation costs, and promote The utilization efficiency of pesticides and fertilizers improves product quality.

The irrigation-saving automatic control system of the present invention not only fully considers the structure optimization problem of the rain-collecting membrane surface and the confluence tank in the greenhouse, but also realizes the fully automatic control of water-saving irrigation, especially in preventing the idling of the water pump due to the lack of water in the rain-collecting pond. The possible burning of the water pump has been systematically considered. Through the series mode of double constraints, the problem that the water pump will be turned on and off in time according to the soil humidity is well solved only when there is rainwater in the rain collection tank.

The multi-processing irrigation water quota reduction sub-system of the present invention realizes the automatic control of different irrigation water quotas, and provides technical means for the automation of water-saving irrigation experiments. The system works stably for the time limit of the dripper instantaneous flow test, and can easily realize drip irrigation. Automatic control of different irrigation quotas.

Description of drawings

Fig. 1 is a structural schematic diagram of the greenhouse rain collection system of the present invention, in which two different implementation scenarios are shown.

Fig. 2 is a structural schematic diagram of the pipeline system of the present invention.

In the figure: a greenhouse (1), a rain collecting surface (11), a confluence trough (12), an aqueduct (13), a rain collecting pool (14), a water transmission and distribution pipeline (21), and a capillary tube (22).

detailed description

The following examples illustrate the invention in detail. Various raw materials and various equipments used in the present invention are conventional commercially available products, and can be directly obtained through market purchase.

Embodiment 1. An automatic control system for rain collection and irrigation in greenhouses.

Referring to the accompanying drawings, the automatic control system of the present invention includes a greenhouse rain collection system, a pipeline system and an irrigation-saving automatic control system.

1. Greenhouse rain collection system. The system includes a rain collecting surface 11 located on the outer periphery of the top of the greenhouse 1, a confluence trough 12 arranged at the lower end of the rain collecting surface 11 and a rain collecting pond 14 arranged underground, and the rain collecting pond 14 is connected to the confluence groove 12 through a water guide pipe 13; In the greenhouse rain collection system, the rain collection surface 11 is the impermeable inclined membrane surface of the greenhouse. This membrane surface is divided into upper and lower parts by the confluence tank 12, and the lower end of the upper membrane surface is fixed on the inner side of the confluence tank 12 to collect rainwater. It is directly imported into the confluence tank 12, and the upper end of the lower membrane surface is fixed on the outside of the confluence tank 12 to prevent rainwater from flowing out; One end of the axial direction is sealed, and the other end is connected with the rain collection pool through the water guide pipe 13; A water outlet; a difficult point in the technical research and development of the present invention is the design of the size of the rainwater collection pool in the greenhouse. Through the analysis of local meteorological data, especially the precipitation data, we focused on the experiment of the rainwater collection process on the shed surface. The experimental results show that the rainwater collection efficiency is closely related to the rainfall intensity, the area of the greenhouse and the curvature of the shed surface. The plastic greenhouse rainwater collection The annual average efficiency is 73.0%, and the rainy season average is 91.0%. Based on this, the calculation formula for the design of the size of the rainwater collection pond in the greenhouse is proposed: V=Wset _{- Wuse} ; where: V—the volume of the rainwater collection pond (m ³ ), W _set —the amount of water collected in the rainy season (m ³ ) , W _use —water consumption in rainy season (m ³ ). Calculated according to the area of 0.1 hectare of each greenhouse, in Shijiazhuang area, the water collection volume of each greenhouse in the rainy season is 352.8 m ³ ; generally, the water consumption of each greenhouse in the rainy season is 225 cubic meters; then the design size of each greenhouse rainwater pool is 127 about cubic meters. If calculated according to the annual rainwater collection volume of each greenhouse, only using the greenhouse rainwater collection technology can meet half of the water demand of the facility greenhouse, which is 50% of the water saving. Coupled with the application of modern water-saving technologies such as under-mulch drip irrigation, infiltration irrigation, and PRD drip irrigation, it can be seen that the water-saving potential of high-efficiency rain collection technology in greenhouses is huge. The annual average rainfall in the North China Plain is 500-900 mm, which translates to 150-270 billion m ³ of water resources. This is a great wealth for areas with serious shortage of water resources, and the potential for rainwater utilization is still very huge.

Second, the pipeline system. The system includes a water transmission and distribution pipeline 21 and a capillary pipe 22, and a valve is arranged on the water transmission and distribution pipeline 21; the water transmission and distribution pipeline 21 adopts a polyethylene plastic hose and includes a main pipe and several branch pipes, and the main pipe and the branch pipes are connected by a tee, a bend First-class connection; the capillary 22 adopts a Φ16 inlaid patch type drip irrigation belt, and is connected with the water transmission and distribution pipeline 21 through a bypass.

3. Automatic irrigation control system. The system includes a DC power supply, a central intelligent controller electrically connected to the DC power supply, a soil moisture sensor set inside the soil for soil moisture measurement and located at the signal input end of the central intelligent controller, and a soil moisture sensor set inside the rain collection tank for measuring the water level accumulation and located at the The water level sensor at the signal input end of the central intelligent controller and the water pump set at the bottom of the rain collection tank and at the signal output end of the central intelligent controller. The water pump is a direct current (DC12v or 24v) submersible pump with a flow rate of 4-6m ³ /h and a head of 6-8 m; DC power supply adopts solar charging system, which includes solar panels, charging controller and DC12V battery; central intelligent controller has 1 power output channel, 4 relay alarm output channels, 4 voltage signal input channels, and the power supply voltage is DC24V; the soil moisture sensor is a voltage sensor with a range of 0-100%. Under the condition of DC12V power supply, it outputs a 0-5V DC voltage signal according to the soil moisture (water content), and the soil moisture (Q) voltage The relationship of the signal (v) is: Q=V/5; the water level sensor is a voltage sensor, which outputs a 0-5V DC voltage signal according to the level of the water level under the condition of DC12V power supply; the signal input terminal of the central intelligent controller simultaneously Connect the soil moisture sensor and the water level sensor. These two groups of sensors form a series mode with double constraints. When the voltage signal input from the soil moisture sensor to the central intelligent controller exceeds the preset value, the central intelligent controller drives the alarm output channel K1 to close. And the voltage signal input by the water level sensor to the central intelligent controller is within the preset value range so that the central intelligent controller drives the alarm output channel K2 to close. If the two conditions are met at the same time, the central intelligent controller controls the water pump to turn on; There is a disconnection in K2, and the water pump is in a closed state; the multi-processing irrigation quota reduction subsystem is also included in the irrigation-saving automatic control system. This multi-processing irrigation quota reduction subsystem includes electrical connection with DC power supply and communication with the central intelligent controller. The intelligent time controller is a programmable time control device with multiple relay output channels. Solenoid valves are set on the pipelines of different output channels, and the working mode of the intelligent time controller is set to timing mode. , set its channels 1, 2, 3, ..., n to be switched on for a certain time a second at the same time, and then each channel is switched off for a certain time b seconds in turn. …m-1 continues to be disconnected. When the last channel n is also disconnected for b seconds, each channel is connected again at the same time, and the cycle is performed; in this way, channel 1 is disconnected for n×b seconds every time it is connected for a second, and the channel 2 will be disconnected for (n-1)×b seconds every time it is connected for a second, and it will be disconnected for (n-2)×b seconds every time channel 3 is connected for a second, and it will be disconnected for b seconds every time channel n is connected for a second, Realize the automatic control of irrigation quota reduction in different areas.

Embodiment 2. Implementation method of automatic control of rain collection and irrigation saving in greenhouses.

Referring to the accompanying drawings, the implementation method of automatic control of rain collection and irrigation in greenhouses is to use the impermeable and inclined film surface of the greenhouse as the rain collection surface 11 to collect rainwater from natural rainfall and store it in the rain collection pond through the confluence tank 12 In 14, it provides water source for greenhouse irrigation; under the condition of DC power supply, the central intelligent controller provides DC power for the soil moisture sensor and water level sensor respectively through the power output channel, and at the same time receives the soil moisture sensor through two voltage input channels respectively. Two sets of different voltage signals sent back by the water level sensor according to the state of soil humidity and the water level of the rainwater collection tank. The two different voltage signals will be compared with the preset alarm voltage values respectively. When the voltage value is lower than the preset alarm voltage value and the voltage value represented by the water level in the rain collection tank is higher than the preset alarm voltage value, the central intelligent controller drives the water pump through the alarm output channel to start pumping water, and The rainwater collected in the rain collection tank 14 is transported to the root soil of the crops through the water transmission and distribution pipelines and capillary tubes to provide water for the normal growth of the crops; and when the soil humidity increases to the sum of the preset alarm value and the return difference value, or When the water level in the rain pond 14 drops to the difference between the pre-set alarm value and the return difference value, the central intelligent controller will drive the water pump through the alarm output channel to cut off the power to stop the pumping work; further set the multi-processing irrigation quota decrement during the irrigation operation In the system, the opening time of different channels is set to gradually decrease in the timing cycle, so as to realize the automatic control of irrigation quota reduction in different treatment areas;

More specifically, in the central intelligent master control system, the soil moisture sensor is located in the soil of the greenhouse and buried near the root layer of the crop. Suppose the field water holding capacity of the soil is 40.0%, the corresponding voltage signal is 2.000v, the alarm voltage value of the central intelligent controller is preset to 1.600v, and the soil water content is 32.0% (equivalent to 80% of the soil field water holding capacity) , the hysteresis value is 0.400v, that is, when the soil water content is lower than 80% of the field water holding capacity, the central intelligent controller will drive the alarm output channel (K1) to close; when the soil water content increases to the preset alarm When the sum (2.000v) of the value (1.600v) and the return difference (0.400v) is the field water holding capacity of the soil, the central intelligent controller will drive the alarm output channel (K1) to disconnect; the water level sensor is located in the set In the rain pond, it is buried deep at the bottom of the rain collection pond. Assuming that the range of the water level sensor is 0-1.000m, the corresponding voltage signal is 0-5.000v, and the alarm voltage value of the central intelligent controller is set to 1.000v in advance, which is equivalent to the water depth in the rainwater collection pond being 0.200m, that is, when the collection When the water depth in the rain pool exceeds 0.200m, the central intelligent controller will drive the alarm output channel (K2) to close; when the water depth in the rain pool drops to the preset alarm value (1.000v) and return difference value (0.500v) When the difference (0.500v), that is, when the water depth in the rain collection tank is lower than 0.100m, the central intelligent controller will drive the alarm output channel (K2) to disconnect; Under the conditional series mode, only when K1 and K2 are closed at the same time, the water pump is turned on; as long as one of K1 and K2 is disconnected, the water pump is turned off. In this way, it is not only ensured that when the soil humidity (water content) is reduced to a certain level, the water in the rain collection tank can be transported to the vicinity of the crops in a timely, timely and appropriate amount through the water pump and the water transmission and distribution pipeline, and at the same time, it is also avoided. There is no water in the pool and the water pump is idling, which may cause the water pump to burn out. Of course, when there is no water in the rain collection pool and it is estimated that there will be no rainfall in the near future, other water sources can be used to make appropriate supplements to ensure that the greenhouse crops need water;

Further, in the multi-treatment irrigation quota reduction subsystem, four treatments are set during operation, and the irrigation quotas of the four treatments are respectively 30% reduction for treatment 1, 20% reduction for treatment 2, 10% reduction for treatment 3, and 10% reduction for treatment 3. Compared with treatment 4: the intelligent time controller communicates with the central intelligent controller and receives the control signal for turning on irrigation, and sets the intelligent time controller to open channels 1, 2, and 3 respectively corresponding to processing 1, processing 2, and processing 3 for 1 minute at the same time , then channel 1 is closed for 6 seconds, then channel 2 is closed for 6 seconds, at this time channel 1 continues to be closed, then channel 3 is closed for 6 seconds, at this time channel 1 and 2 continue to be closed, then channel 1, 2 and 3 are opened simultaneously, channel 4 is always on; cycle. The result of this is that treatment 1 closes for 18 seconds every 1 minute, treatment 2 closes 12 seconds every 1 minute, treatment 3 closes 6 seconds every 1 minute, and controls 0 seconds every 1 minute. The instantaneous flow rate of each dripper of the four groups of treatment was repeated three times, and the results are shown in Table 1 below:

Table 1 Measurement results of dripper instantaneous flow rate

The test results show that the multi-processing irrigation quota reduction subsystem works stably, and can easily realize the automatic control of different irrigation quotas under drip irrigation.

The above description is only proposed as an implementable technical solution of the present invention, and not as a single restriction on the technical solution itself.

Claims (10)

1. a warmhouse booth collection rain joint fills automatic control system, it is characterised in that: the structure of this system includes warmhouse booth Collection rain system, tubing and joint fill automatic control system；

Described warmhouse booth collection rain system includes being positioned at the collection rain face (11) of warmhouse booth (1) top peripheral, being arranged on collection rain face (11) collecting tray (12) of low side and be arranged on the ground or the rain collecting pool (14) of underground, described rain collecting pool (14) passes through aqueduct (13) connect with described collecting tray (12)；

Described tubing includes water-supply pipeline (21) and hollow billet (22), and described water-supply pipeline is provided with valve on (21)；

Described joint fills central intelligent controller, the setting that automatic control system includes that DC source and DC source be electrically connected Soil humidity measuring the soil moisture sensor of centrally located intelligent controller signal input part, setting is carried out inside soil Pass at the internal water level carrying out water level accumulation measurement centrally located intelligent controller signal input part of described rain collecting pool (14) Sensor and be arranged on described rain collecting pool (14) bottom the water pump of centrally located intelligent controller signal output part.

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: big in described greenhouse In canopy collection rain system, described integrating the rain face (11) the waterproof inclination face as warmhouse booth, this face is by described collecting tray (12) Being divided into upper and lower two parts, wherein the lower end of top face is fixed on the inner side of collecting tray (12) and rainwater is introduced directly into collecting tray (12) in groove, and the outside that the upper end of its underpart face is fixed on collecting tray (12) avoids rainwater to outflow.

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: big in described greenhouse In canopy collection rain system, described collecting tray (12) is horizontally fixed on the skeleton of warmhouse booth, one end quilt that collecting tray (12) is axial Sealing, its other end is connected with described rain collecting pool (14) by aqueduct (13).

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: big in described greenhouse In canopy collection rain system, described rain collecting pool (14) is arranged on the outside of warmhouse booth (1) and located underground, its buried depth 30-70cm, Water inlet and outlet are left in rain collecting pool (14) top；The volume of rain collecting pool (14) determines according to equation below: V=W_Collection-W_With；Formula In: the volume of V rain collecting pool, W_CollectionRainy season collecting water from runoff, W_WithRainy season water consumption.

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: in described pipeline system In system, described water-supply pipeline (21) uses plastic flexible pipe and comprises supervisor and some arms, by three between supervisor and arm Logical, elbows etc. connect；Patch type drip irrigation tape inlayed by described hollow billet (22) in using, and by bypass and described water-supply pipeline (21) It is connected.

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: fill certainly at described joint In autocontrol system, described DC source uses solar recharging system, and this system includes solar panels, charge controller and electricity Bottle；The signal input part of described central intelligent controller is simultaneously connected with soil moisture sensor and level sensor, these two groups biographies The series model of the double constraints of sensor composition, the voltage signal inputted to central intelligent controller when soil moisture sensor surpasses Go out preset value so that central intelligent controller drives warning output channel K1 Guan Bi, and level sensor is to central authorities' intelligence Controller input voltage signal in preset value interval so that central intelligent controller drive warning output channel K2 close Closing, two conditions meet then central intelligent controller control water pump simultaneously and just open；And as long as K1 Yu K2 has a disconnection, water Pump is closed.

Warmhouse booth collection rain the most according to claim 1 joint fills automatic control system, it is characterised in that: fill certainly at described joint Autocontrol system also includes multiprocessing irrigating water quota decrement subsystem, this multiprocessing irrigating water quota decrement subsystem include with directly The Intelligent time controller that stream power supply is electrically connected and communicates with described central intelligent controller, this Intelligent time controller is tool The programmable time having multiple relay output channel controls device, is respectively provided with electromagnetism on the pipeline of its different output channel Valve, the mode of operation arranging Intelligent time controller is timing mode, arrange simultaneously its passage 1,2,3 ..., n be also turned on one Fixing time a second, then each passage disconnects second certain time b successively, when a certain passage m disconnects, and passage 1,2,3 above ... M-1 continues to remain open, and after last passage n disconnects the b second too, each passage is also turned on again, is circulated； So, passage 1 is often connected a second and is just disconnected n × b second, and passage 2 is often connected a second and just disconnected (n-1) × b second, and passage 3 is often connected a second Just disconnecting (n-2) × b second, passage n often connects just disconnection b second a second, it is achieved the irrigating water quota decrement of zones of different automatically controls.

8. a warmhouse booth collection rain joint filling automatically controls implementation, it is characterised in that: utilize warmhouse booth waterproof and incline Oblique face, as collection rain face (), is carried out the afflux of rainwater, and is stored in rain collecting pool by collecting tray () natural rainfall, for Warmhouse booth is irrigated provides water source；Central intelligent controller is under DC source condition of power supply, by power supply output channel respectively There is provided DC source for soil moisture sensor and level sensor, the most respectively by two-way voltage input channel, receive soil Earth moisture transducer and level sensor send two groups returned not according to soil moisture state with rain collecting pool water level height respectively Same voltage signal, these two varying voltage signals are by comparing with alarm voltage value set in advance respectively, when two conditions, The magnitude of voltage that the magnitude of voltage that i.e. soil moisture represents represents less than water level in alarm voltage value set in advance and rain collecting pool is higher than When alarm voltage value set in advance meets simultaneously, central intelligent controller drives water pump energising to start by warning output channel Draw water work, and by water-supply pipeline () and hollow billet (), the rainwater collected in rain collecting pool is transported to crop root soil, for Crop normal growth provides water source；And when soil moisture increases to alarming value set in advance with return difference value sum, or collection When water level in rain pond is reduced to the difference of alarming value set in advance and return difference value, central intelligent controller will be exported by warning Channels drive Pump Failure stops pumping work；Multiprocessing irrigating water quota decrement subsystem is set further when pouring water operation, The opening time gradient decrement successively of different passage was set within time-count cycle, it is achieved the irrigating water quota decrement in different disposal region Automatically control.

Warmhouse booth collection rain the most according to claim 8 joint filling automatically controls implementation, it is characterised in that: described soil Earth moisture transducer buried depth is at root of the crop layer, and the field capacity of soil is x, and corresponding voltage signal is o, in pre-setting The alarm voltage value of centre intelligent controller is p, and the p/o of water-retaining quantity among field of soil, return difference value is q=o-p, when soil moisture content is low When p/o, central intelligent controller drives warning output channel Guan Bi, if meet rain collecting pool water level height constraint bar the most simultaneously Part, then electromagnetic valve is opened and is started to pour water；When soil moisture content increases to return difference value q set in advance with alarming value p sum o, Driving warning output channel is disconnected by central intelligent controller, closed electromagnetic valve.

Warmhouse booth collection rain the most according to claim 8 joint filling automatically controls implementation, it is characterised in that: multiprocessing Arranging four process during irrigating water quota decrement subsystem operation, four irrigating water quotas processed are respectively and process a decrement 30%, place Manage two decrements 20%, process three decrements 10%, as the process four compareed；Intelligent time controller and described central intelligent controller Communicate and receive and open the control signal poured water, Intelligent time controller is set with process one, process two, to process three difference the most corresponding Passage 1,2,3 open 1 minute simultaneously, then passage 1 is closed 6 seconds, and then passage 2 is closed 6 seconds, and now passage 1 continues to close, Then passage 3 is closed 6 seconds, and now passage 1,2 continues to close, and then passage 1,2,3 is opened the most simultaneously, and passage 4 is always on；Enter Row circulation.