An intelligent irrigation control system with state feedback function

Abstract

The application provides an intelligent irrigation control system with state feedback function, comprising: an irrigation device and a management platform; the irrigation device comprises a soil moisture sensor, a water pump and at least one electromagnetic valve; the soil moisture sensor is used for collecting soil moisture data of target soil at a preset depth and sending the soil moisture data to the management platform; the management platform is used for acquiring the type and planting time of crops on the target soil; according to the type, planting time and current time of the crops, the current growth period of the crops is determined, and the root depth of the crops in the current growth period is determined; according to the type, current growth period, root depth, soil moisture data and pre-constructed management decision model of the crops, the water pump and the electromagnetic valve corresponding to the target soil are controlled. The application can determine the reasonable soil moisture data range of the target soil according to the current growth period of the crops, so that the irrigation is more reasonable and scientific, the water utilization rate of irrigation can be improved, and the waste of water resources can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic control, and in particular to an intelligent irrigation control system with state feedback function. BACKGROUND

[0002] In recent years, with the increasing contradiction between water supply and demand, developing efficient water-saving irrigation has become a strategic choice for the healthy, stable and sustainable development of China's agriculture. The automatic water and fertilizer management system has the advantages of high automation, water and fertilizer saving, and labor saving, and has been widely applied in efficient water and fertilizer integration and high-standard farmland construction projects in China, effectively improving the automation level of field water and fertilizer management.

[0003] However, the automatic field irrigation systems currently in use are mostly time sequence controlled, that is, when the set irrigation time is reached, irrigation is carried out according to the set program regardless of whether irrigation is needed, and when the set irrigation stop time is reached, the equipment automatically stops irrigation. The use of time sequence control improves the automation level of irrigation management to some extent, but the matching between time sequence control and the water and fertilizer demand law of crops is poor, resulting in serious waste of water and fertilizer, affecting the irrigation effect, and making the field irrigation management not scientific and reasonable, and the irrigation water utilization rate is low. SUMMARY

[0004] The embodiments of the present application provide an intelligent irrigation control system with state feedback function to solve the problem of the current field irrigation management not being scientific and reasonable and the low irrigation water utilization rate.

[0005] In a first aspect, the embodiments of the present application provide an intelligent irrigation control system, comprising: an irrigation device and a management platform.

[0006] The irrigation device comprises a soil moisture sensor, a water pump and at least one electromagnetic valve.

[0007] The soil moisture sensor is used to collect soil moisture data of a target soil at at least one preset depth, and send the soil moisture data to the management platform.

[0008] The management platform is used to obtain the type and planting time of crops on the target soil, determine the current growth period of the crops according to the type, planting time and current time of the crops, and determine the root depth of the crops in the current growth period, and control the water pump and the electromagnetic valve corresponding to the target soil according to the type of the crops, the current growth period, the root depth, the soil moisture data and a pre-constructed management decision model.

[0009] In some possible implementation manners, the management platform is specifically used for:

[0010] According to the root depth, the target soil moisture data is selected from the soil moisture data at at least one preset depth.

[0011] inputting the type of the crop, the current growth period and the root depth into a pre-constructed management decision model to determine an upper limit value and a lower limit value of the soil moisture data of the crop;

[0012] if the target soil moisture data is less than the lower limit value, controlling the water pump and the electromagnetic valve corresponding to the target soil to be opened;

[0013] if the target soil moisture data is greater than the upper limit value, controlling the water pump and the electromagnetic valve corresponding to the target soil to be closed.

[0014] In some possible implementation manners, the pre-constructed management decision model includes an upper limit value and a lower limit value setting table of the soil moisture data of at least one type of crop;

[0015] The upper limit value and the lower limit value setting table of the soil moisture data includes the growth period of the crop, the upper limit value and the lower limit value of the soil moisture data corresponding to each growth period; wherein the lower limit value of the soil moisture data range corresponding to each growth period is determined according to the upper limit value of the soil moisture data range corresponding to the growth period and the growth period.

[0016] In some possible implementation manners, the irrigation equipment further includes a field weather station;

[0017] The field weather station is configured to detect the current air temperature of the target soil and send the current air temperature to the management platform;

[0018] The management platform is further configured to, if the current air temperature is not within the preset temperature range, not control the water pump and the electromagnetic valve corresponding to the target soil to be opened.

[0019] In some possible implementation manners, the irrigation equipment further includes a pressure gauge and / or a flow meter, wherein the pressure gauge and / or the flow meter are arranged at the outlet of the electromagnetic valve;

[0020] The pressure gauge is configured to detect pressure data at the outlet of the electromagnetic valve and send the pressure data to the management platform;

[0021] The flow meter is configured to detect flow data at the outlet of the electromagnetic valve and send the flow data to the management platform;

[0022] The management platform is further configured to, if the pressure data is greater than a preset pressure threshold value and / or the flow data is greater than a preset flow threshold value, determine that the electromagnetic valve is in an open state

[0023] In some possible implementation manners, the irrigation equipment further includes a valve controller or a decoder;

[0024] The management platform is further configured to send a control instruction to the electromagnetic valve through the valve controller or the decoder, so that the electromagnetic valve is opened or closed based on the control instruction;

[0025] The valve controller or the decoder is also configured to receive a state feedback signal generated by the electromagnetic valve based on the control instruction.

[0026] In some possible implementation manners, the management platform is further configured to generate a prompt signal based on the control instruction, the state feedback signal and the state of the electromagnetic valve, wherein the prompt signal is used to indicate whether the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve are faulty.

[0027] In some possible implementation manners, the management platform is specifically configured to generate a first prompt signal if the control instruction, the state feedback signal and the state of the electromagnetic valve are consistent.

[0028] generate a second prompt signal if the control instruction and the state feedback signal are consistent, and the control instruction is inconsistent with the state of the electromagnetic valve;

[0029] generate a third prompt signal if the control instruction and the state of the electromagnetic valve are consistent, and the control instruction is inconsistent with the state feedback signal;

[0030] generate a fourth prompt signal if the control instruction and the state feedback signal are inconsistent, and the state feedback signal is consistent with the state of the electromagnetic valve.

[0031] In some possible implementation manners, the first prompt signal comprises a first opening prompt signal and a first closing prompt signal.

[0032] If the control instruction, the state feedback signal and the state of the electromagnetic valve are all open, the first opening prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve are in a normal running state.

[0033] If the control instruction, the state feedback signal and the state of the electromagnetic valve are all closed, the first closing prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve are in a normal closed state.

[0034] If the control instruction and the state feedback signal are both open, and the state of the electromagnetic valve is closed; or the control instruction and the state feedback signal are both closed, and the state of the electromagnetic valve is open, the second prompt signal is used to indicate that the state of the electromagnetic valve is abnormal.

[0035] If the control instruction and the state of the electromagnetic valve are both open, and the state feedback signal is closed; or the control instruction and the state of the electromagnetic valve are both closed, and the state feedback signal is open, the third prompt signal is used to indicate that the valve controller or the decoder is faulty.

[0036] If the control instruction is open, and the state feedback signal and the state of the electromagnetic valve are closed; or the control instruction is closed, and the state feedback signal and the state of the electromagnetic valve are open, the fourth prompt signal is used to indicate that the intelligent irrigation control system is faulty.

[0037] In some possible implementation manners, the irrigation equipment further comprises an indicator light;

[0038] The indicator light is used for representing the prompt signal.

[0039] The embodiment of the present application provides a kind of intelligent irrigation control system with state feedback function, which is composed of software control platform and matched hardware equipment two parts, specifically, software control platform is management platform, and matched hardware equipment is irrigation equipment;The management platform collects the type and planting time of crop on the target soil needing irrigation;And according to the type of crop, planting time and current time, the current growth period of the crop is determined. Considering that the root depth of different types of crops is different in different growth periods, and the soil humidity required is also different, the soil moisture sensor in the irrigation equipment detects the soil moisture data at at least one preset depth of target soil, and sends the detected soil moisture data to the management platform;Management platform receives soil moisture data, and determines whether water pump and corresponding electromagnetic valve need to be opened or closed according to the pre-constructed management decision model. Wherein, the embodiment of the present application innovatively uses pressure gauge or flowmeter arranged after electromagnetic valve to detect the state of electromagnetic valve, which is more accurate than judging by valve controller or decoder. It can be seen that the embodiment of the present application determines the growth period of the crop according to the type and planting time of the crop, and determines the soil moisture data at reasonable depth of target soil according to the growth period, and reasonable soil moisture data range, so that irrigation is more reasonable and more scientific, and water utilization rate can be improved, and waste of water resources can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0041] Figure 1 It is the control principle diagram of the intelligent irrigation control system with state feedback function provided by the embodiment of the present application;

[0042] Figure 2 It is the structure schematic diagram of the intelligent irrigation control system with state feedback function provided by the embodiment of the present application;

[0043] Figure 3 It is the measured curve diagram of soil moisture data provided by the embodiment of the present application;

[0044] Figure 4 It is the arrangement schematic diagram of irrigation equipment provided by the embodiment of the present application;

[0045] Figure 5 is a control interface display diagram of the management platform provided by the embodiment of the present application. DETAILED DESCRIPTION

[0046] In order for those skilled in the art to better understand the present scheme, the technical solutions in the embodiments of the present scheme will be clearly described below in combination with the accompanying drawings in the embodiments of the present scheme. Obviously, the described embodiments are part of the embodiments of the present scheme, rather than all the embodiments. Based on the embodiments in the present scheme, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present scheme.

[0047] The term "comprising" and other any variations thereof in the specification and claims of the present scheme and the above-mentioned accompanying drawings means "including but not limited to", which is intended to cover non-exclusive inclusion and is not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0048] The implementation of the present application will be described in detail below in combination with specific accompanying drawings:

[0049] Figure 1 is a control principle diagram of the intelligent irrigation control system with state feedback function provided by the embodiment of the present application; according to Figure 1 , the system can realize communication through wired and wireless two ways. Specifically, when the electromagnetic valve needs to be controlled, the front-end web / mobile terminal in the management platform is in communication connection with the emqx server, the control instruction is transmitted to the emqx server, and then transmitted to the industrial control board or PLC controller by the emqx server, wherein the industrial control board or PLC controller can be arranged in the valve control box or in the fertilizer machine.

[0050] The industrial control board realizes communication with the wireless valve control gateway or wired valve control module through wired or wireless two ways, realizes the on-off control of the electromagnetic valve through the valve controller (or decoder), and the state of the electromagnetic valve is transmitted to the management platform through the valve controller (or decoder) after executing the control instruction. Among them, Figure 1 The valve controller and the decoder in the are two different devices, but their functions are the same, both of which are used to control the electromagnetic valve and receive the state feedback signal of the electromagnetic valve; generally speaking, the valve controller is used in wireless communication, and the decoder is used in wired communication, Figure 1 Two different names are used in the to distinguish wired communication and wireless communication.

[0051] Based on the control principle, the structure of the intelligent irrigation control system with state feedback function provided by the embodiment of the present application is shown in detail in Figure 2 . For example, Figure 2As shown, the system comprises an irrigation device 100 and a management platform 200.

[0052] The irrigation device 100 comprises a soil moisture sensor 101, a water pump 102 and at least one electromagnetic valve 103.

[0053] The soil moisture sensor 101 is configured to collect soil moisture data at at least one preset depth of the target soil 300 and send the soil moisture data to the management platform 200.

[0054] The management platform 200 is configured to obtain the type and planting time of the crop on the target soil 300, determine the current growth period of the crop according to the type of the crop, the planting time and the current time, and determine the root depth of the crop in the current growth period, and control the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 according to the type of the crop, the current growth period, the root depth, the soil moisture data and the pre-constructed management decision model.

[0055] In this embodiment, one water pump 102 can irrigate multiple areas, i.e. multiple target soils 300, by pumping water from the water source 400. In order to accurately control the irrigation area, each target soil 300 corresponds to at least one electromagnetic valve 103 and at least one soil moisture sensor 101.

[0056] The soil moisture sensor 101 can collect soil moisture data at at least one preset depth. The preset depth can be determined according to the type of the crop planted on the target soil 300. For example, assuming that the growth period of the A-type crop has five stages, including the seedling stage, the jointing stage, the large trumpet stage, the male stage and the mature stage, and the corresponding root depths of each stage are a, b, c, d and e respectively; then, for the target soil 300 where the A-type crop is planted, the soil moisture sensor 101 can collect soil moisture data at the preset depths of a, b, c, d and e respectively, and send the collected soil moisture data to the management platform 200.

[0057] For any target soil 300, the type and planting time of the crop on the target soil 300 need to be stored in the management platform 200 in time after the target soil 300 is sowed, and the management platform 200 pre-stores the time period corresponding to each node stage in the growth period of each type of crop.

[0058] The management platform 200 determines the current growth period of the crop according to the type of the crop on the target soil 300, the planting time and the current time. For example, the crop on the target soil 300 is corn, the planting time of the corn is x month x day, the 0-f days after sowing are the seedling stage, the f+1-g days are the jointing stage, the g+1-y days are the tasseling stage, and so on, and the current time is k month j day. The current time k month j day is subtracted from the planting time x month x day, and the obtained number of days is used to determine the growth period of the corn. According to the growth period, the corresponding root depth of the corn at this time can be determined. Then, the management platform 200 determines whether irrigation is needed according to the type of the crop, the current growth period, the root depth, the soil moisture data and the pre-constructed management decision model, so as to control the water pump 102 and the electromagnetic valve 102 corresponding to the target soil 300.

[0059] The following describes how the management platform 200 specifically controls the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 through an optional embodiment:

[0060] In some optional embodiments, in order to control the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 according to the type of the crop, the current growth period, the root depth, the soil moisture data and the pre-constructed management decision model, the management platform 200 can be specifically used for:

[0061] According to the current growth period and the root depth, the target soil moisture data is selected from the soil moisture data at at least one preset depth.

[0062] The type of the crop, the current growth period and the root depth are input into the pre-constructed management decision model to determine the upper limit value and the lower limit value of the soil moisture data of the crop.

[0063] If the target soil moisture data is less than the lower limit value, the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 are controlled to be opened.

[0064] If the target soil moisture data is greater than the upper limit value, the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 are controlled to be closed.

[0065] In this embodiment, for example, the soil moisture data is five groups of data at preset depths a, b, c, d and e, and the root depth of the current crop is between a and b, so the soil moisture data at the preset depth b can be taken as the target soil moisture data. The type of the crop, the current growth period and the root depth are input into the pre-constructed management decision model to determine the upper limit value and the lower limit value of the soil moisture data of the crop.

[0066] If the target soil moisture data is less than the lower limit value, it indicates that irrigation is needed at this time, and the electromagnetic valve 103 corresponding to the water pump 102 and the target soil 300 is opened. If the target soil moisture data is greater than the upper limit value, and the electromagnetic valve 103 corresponding to the water pump 102 and the target soil 300 is in the open state at this time, it indicates that irrigation needs to be stopped at this time, and the electromagnetic valve 103 corresponding to the water pump 102 and the target soil 300 is closed. If the target soil moisture data is greater than the lower limit value and less than the upper limit value, and the electromagnetic valve 103 corresponding to the water pump 102 and the target soil 300 is in the closed state at this time, it indicates that the soil humidity meets the requirements of the current growth period of the crop, and therefore, the electromagnetic valve 103 corresponding to the water pump 102 and the target soil 300 does not need to be adjusted, and the current state can be maintained.

[0067] In the present embodiment, the pre-constructed management decision model can include an upper limit value and a lower limit value setting table of the soil moisture data of at least one type of crop.

[0068] The upper limit value and the lower limit value setting table of each type of soil moisture data includes the growth period, the root depth, the upper limit value and the lower limit value of the soil moisture data corresponding to each growth period of the crop of this type; wherein the lower limit value of the soil moisture data range corresponding to each growth period is determined according to the upper limit value of the soil moisture data range corresponding to the growth period and the growth period. For example, refer to Table 1.

[0069] Table 1 Upper limit value and lower limit value setting table of soil moisture data

[0070]

[0071] Taking corn as an example, it is considered that the water irrigation amount should be sufficient during the emergence period; after emergence to the big trumpet stage, it belongs to the nutrient production stage, the root system is underdeveloped at this stage, the water absorption capacity is limited, and moderate irrigation not only saves water, but also is beneficial to the deep rooting of the root system; the big trumpet stage to the tasseling stage belongs to the key period of simultaneous nutrient growth and reproductive growth, and water needs to be supplemented in time and in sufficient amount, and the root system distribution at this stage is basically stable; the water requirement of the mature period is reduced, and excessive irrigation will cause waste of water resources; in Table 1, the main distribution depth of the root system in different growth periods is set as a, b, c...x from shallow to deep, specifically, the first growth stage: the soil moisture condition of the a layer deep soil is taken as the decision basis, and the upper and lower limit values are set as m and n respectively; the second growth stage: the soil moisture condition of the b layer deep soil is taken as the decision basis, and the upper and lower limit values are set as m' and n' respectively; the n growth stage: the soil moisture condition of the x layer deep soil is taken as the decision basis, and the upper and lower limit values are set as m" and n" respectively.

[0072] Figure 3 is the soil moisture data measurement curve provided by the embodiment of the present application, as Figure 3As shown, the management platform 200 can generate a curve graph according to the soil moisture data collected by the soil moisture sensor 101. Since crops can only obtain high quality and high yield under suitable soil water content conditions, excessive irrigation not only causes deep seepage and ineffective evaporation, wasting water resources, but also causes root anaerobic respiration, affecting crop yield and quality; when the soil water content is too low, it will cause stress to crop growth, and even cause wilting due to excessive water shortage, so it is necessary to develop reasonable irrigation upper and lower limits, so in some optional embodiments, the management platform 200 can further include a field meteorological station. Figure 3 In the curve graph, the abscissa is time, and the ordinate is the soil water content collected by the soil moisture sensor. The wilting amount can be 9.27, the supplemental irrigation amount can be 21.63, and the field holding amount can be 30.9.

[0073] Specifically, referring to Table 1, in the first growth stage, the measured field water holding capacity θca of a centimeters (cm) below the ground surface is the upper limit m of the irrigation amount, and iθca is the lower limit n of the irrigation;

[0074] In the second growth stage, the measured field water holding capacity θcb of b centimeters (cm) below the ground surface is the upper limit m' of the irrigation amount, and jθcb is the lower limit n' of the irrigation;

[0075] In the n growth stage, the measured field water holding capacity θcx of x centimeters (cm) below the ground surface is the upper limit m" of the irrigation amount, and kθcx is the lower limit n" of the irrigation;

[0076] Wherein, i, j, and k are coefficients determined according to the growth mechanism of crops. Since the drought resistance of crops is different at different growth stages, i, j, and k can have different values, which can be set according to actual needs, and are not limited herein.

[0077] It is considered that the irrigation period is also related to meteorological parameters, and irrigation should be avoided during high temperature and low temperature periods, therefore, in some optional embodiments, the irrigation equipment 100 can further include a field meteorological station.

[0078] The field meteorological station is configured to detect the current air temperature of the target soil 300, and send the current air temperature to the management platform 200.

[0079] The management platform 200 is further configured to, if the current air temperature is not within the preset temperature range, not control the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 to be opened.

[0080] In this embodiment, after determining that irrigation is needed based on the target soil moisture data, if the current temperature collected by the meteorological station is greater than the set maximum temperature Tmax, or less than the set minimum temperature Tmin (i.e., not within the preset temperature range), irrigation is not performed, and irrigation is performed when the air temperature decreases / rises to a suitable temperature, i.e., Tmin≤t≤Tmax is required when irrigation is performed.

[0081] In the present embodiment, for the problem of low valve control guarantee rate and lack of monitoring of the running state of the valve in the popularization and application of the intelligent irrigation control system, it is believed that there are two reasons for the problem: on the one hand, in some areas with poor network, the success rate of sending control instructions of the management platform 200 cannot reach 100%; on the other hand, the electromagnetic valve 103 needs to be under rated working pressure to normally open and close, and due to many factors such as insufficient water conservancy calculation, unreasonable pipe network design and influence of terrain, the electromagnetic valve cannot normally open and close. However, the automatic irrigation system currently popularized and applied lacks monitoring of the running state of the electromagnetic valve in the field, and generally after clicking the open / close control button, the default control instruction is sent successfully and the electromagnetic valve 103 normally opens and closes. Due to the lack of monitoring of the actual working state of the valve body, the valve body working state feedback is not timely, and the single or multiple control units "under-irrigation" and "flooding" conditions occur from time to time, which affects the further popularization and application of the irrigation system.

[0082] To solve the problem, in some optional embodiments, as shown in Figure 4 , a pressure gauge 104 and / or a flow meter 105 can be added to the intelligent irrigation control system; the pressure gauge 104 and / or the flow meter 105 are arranged at the outlet of the electromagnetic valve (the pressure gauge 104 and / or the flow meter 105 arranged at the outlet of the electromagnetic valve are not drawn in the figure, only annotated with lines).

[0083] The pressure gauge 104 is used to detect the pressure data at the outlet of the electromagnetic valve 103 and send the pressure data to the management platform 200.

[0084] The flow meter 105 is used to detect the flow data at the outlet of the electromagnetic valve 103 and send the flow data to the management platform 200.

[0085] The management platform 200 is also used to determine that the electromagnetic valve 103 is in an open state if the pressure data is greater than a preset pressure threshold value, and / or the flow data is greater than a preset flow threshold value.

[0086] In the present embodiment, considering that when water flows in the water pipe, the pressure and flow in the water pipe are greater than when there is no water flowing in the water pipe. Therefore, the pressure or flow is used as the basis for determining whether the electromagnetic valve 103 is in an open or closed state. Specifically, if the pressure data is greater than a preset pressure threshold value, and / or the flow data is greater than a preset flow threshold value, it is determined that the electromagnetic valve 103 is in an open state; if the pressure data is not greater than the preset pressure threshold value, or the flow data is not greater than the preset flow threshold value, it is determined that the electromagnetic valve 103 is in a closed state. The preset pressure threshold value can be 5, 7, 9, and the preset flow threshold value can be 5, 7, 9, etc., which are not limited herein.

[0087] In some embodiments, to realize automatic irrigation, the irrigation device 100 can further include a pressure gauge 104 and / or a flow meter 105 arranged at the water outlet of the water pump, as shown in FIG. 1. Figure 4 The pressure gauge 104 and / or the flow meter 105 arranged at the water outlet of the water pump are used to detect the pressure and / or flow of the system to determine whether the pressure and / or flow reaches the opening or closing condition of the water pump. In addition, Figure 4 The irrigation device 100 further includes a filter 106 for filtering the water source, an intelligent water and fertilizer integrated machine 107 for adding fertilizer to the water, an intelligent water and fertilizer integrated machine water inlet pipeline 108, an intelligent water and fertilizer integrated machine water outlet pipeline 109, a two-position three-way electromagnetic valve 110 serving as a total water valve of a dry pipeline 111, a branch pipeline 112, and a frequency converter for adjusting the motor speed of the water pump 102.

[0088] In addition, in the present embodiment, for one water pump 102, a pressure gauge 104 and a flow meter 105 can be arranged at the water outlet thereof to monitor the pressure and flow of the system to ensure that the head filter and the fertilizer machine work normally.

[0089] To improve the detection accuracy, a pressure gauge 104 or a flow meter 105 needs to be arranged after each target soil 300 electromagnetic valve 103, and the specific arrangement manner can be adjusted as needed, which is not limited herein.

[0090] In some optional embodiments, the irrigation device 100 further includes a valve controller or a decoder.

[0091] The management platform 200 is further configured to send a control instruction to the electromagnetic valve 103 through the valve controller or the decoder, so that the electromagnetic valve 103 is opened or closed based on the control instruction.

[0092] The valve controller or the decoder is further configured to receive a state feedback signal generated by the electromagnetic valve 103 based on the control instruction.

[0093] In the present embodiment, if the management platform 200 and the irrigation device are in wired communication, when it is needed to control the electromagnetic valve 103, the management platform 200 sends a control instruction to the electromagnetic valve 103 through the decoder, the electromagnetic valve 103 receives the control instruction and is opened or closed according to the indication of the control instruction, and after executing the control instruction, a state feedback signal is generated according to the control instruction and is fed back to the management platform 200 through the decoder. If the management platform 200 and the irrigation device are in wireless communication, the above steps are realized through the valve controller.

[0094] For example, if the control instruction is to close, the electromagnetic valve 103 receives the control instruction and considers that it is closed according to the control instruction, and the state feedback signal fed back to the valve controller or decoder is closed; if the control instruction is to open, the electromagnetic valve 103 receives the control instruction and considers that it is opened according to the control instruction, and the state feedback signal fed back to the valve controller or decoder is opened.

[0095] The valve controller or decoder is arranged together with the electromagnetic valve 103, which is not marked in the figure, and can be considered as including the electromagnetic valve and the valve controller or decoder.

[0096] In some optional embodiments, after determining the state feedback signal and the state of the electromagnetic valve 103, the management platform 200 can also be used to generate a prompt signal based on the control instruction, the state feedback signal and the state of the electromagnetic valve; wherein the prompt signal is used to indicate whether the intelligent irrigation control system, the valve controller or decoder and the electromagnetic valve 103 have a fault.

[0097] Specifically, the management platform is specifically used to generate a first prompt signal if the control instruction, the state feedback signal and the state of the electromagnetic valve are consistent.

[0098] If the control instruction and the state feedback signal are consistent, and the control instruction is inconsistent with the state of the electromagnetic valve, a second prompt signal is generated.

[0099] If the control instruction and the state of the electromagnetic valve are consistent, and the control instruction is inconsistent with the state feedback signal, a third prompt signal is generated.

[0100] If the control instruction and the state feedback signal are inconsistent, and the state feedback signal and the state of the electromagnetic valve are consistent, a fourth prompt signal is generated.

[0101] In some possible implementation manners, the first prompt signal includes a first opening prompt signal and a first closing prompt signal.

[0102] If the control instruction, the state feedback signal and the state of the electromagnetic valve are all opened, the first opening prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or decoder and the electromagnetic valve are in a normal running state.

[0103] If the control instruction, the state feedback signal and the state of the electromagnetic valve are all closed, the first closing prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or decoder and the electromagnetic valve are in a normal closed state.

[0104] If the control instruction and the state feedback signal are both opened, and the state of the electromagnetic valve is closed; or the control instruction and the state feedback signal are both closed, and the state of the electromagnetic valve is opened, the second prompt signal is used to indicate that the state of the electromagnetic valve is abnormal.

[0105] If the control instruction and the state of the electromagnetic valve are both open, and the state feedback signal is closed; or, the control instruction and the state of the electromagnetic valve are both closed, and the state feedback signal is open, the third prompt signal is used to indicate a fault of the valve controller or the decoder.

[0106] If the control instruction is open, and the state feedback signal and the state of the electromagnetic valve are closed; or, the control instruction is closed, and the state feedback signal and the state of the electromagnetic valve are open, the fourth prompt signal is used to indicate a fault of the intelligent irrigation control system.

[0107] In some optional embodiments, the irrigation equipment 100 can further include an indicator lamp.

[0108] The indicator lamp is used to represent the prompt signal.

[0109] In some optional embodiments, the management platform 200 is further used to send prompt information to the user based on the prompt signal.

[0110] Table 2 is a valve state table of the intelligent irrigation control system, and specific contents are shown in Table 2. In actual working process, the intelligent irrigation control system mainly exists in the following several states:

[0111] Table 2 Valve state table of the intelligent irrigation control system

[0112]

[0113]

[0114] Figure 5 FIG. 1 is a control interface display diagram of the management platform provided in the embodiments of the present application, and the following will be described in combination with Figure 5 Table 1 to explain the related embodiments of the management platform 200 for generating the prompt signal based on the control instruction, the state feedback signal and the state of the electromagnetic valve.

[0115] In the present embodiment, as shown in FIG. 1, the control interface can display the state of each electromagnetic valve 103 received by the valve controller or the decoder, and the on-off control of each electromagnetic valve 103 can be realized by operating the control interface. Figure 5

[0116] ​Referring to Table 1, if the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to open, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is open, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is open, then the indicator light can display a normal working state, such as green, and at the same time, prompt information can be sent to the user, indicating that the current system is in a normal open state. Through the color of the indicator light or the prompt information, the user can judge whether a fault occurs in the current system.

[0117] If the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to close, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is closed, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is closed, then the indicator light can display a normal closed state, such as gray, and at the same time, prompt information can be sent to the user, indicating that the current system is in a normal closed state.

[0118] If the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to open, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is open, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is closed; or, if the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to close, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is closed, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is open, then the indicator light can display that the electromagnetic valve 103 is in an abnormal working state, such as yellow, and at the same time, prompt information can be sent to the user, prompting which specific electromagnetic valve 103 is in an abnormal working state.

[0119] If the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to open, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is closed, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is open; or, if the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to close, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is open, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is closed, then the indicator light can display that the valve controller or the decoder is in a fault state, such as yellow, and at the same time, prompt information can be sent to the user, prompting that the valve controller is in a fault state.

[0120] If the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to open, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is closed, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is closed; or, if the control instruction sent by the management platform 200 is to control the electromagnetic valve 103 to close, the state feedback signal of the electromagnetic valve 103 received by the valve controller or the decoder is that the electromagnetic valve 103 is open, and the data detected by the pressure gauge 104 and / or the flow meter 105 determines that the state of the electromagnetic valve 103 is open, then the indicator light can display that the system is in a fault state, such as red, and at the same time, prompt information can be sent to the user to prompt the system failure.

[0121] The following describes the complete control logic and application scenarios of the system provided by the embodiments of the present application through another optional embodiment.

[0122] In the present embodiment, at least one water pump 102 can be included in each intelligent irrigation control system, which can correspond to irrigation of multiple target soils 300. The water pump 102 can be used to pump water from the water source 400 through inverted micro-spraying, ground-inserted micro-spraying, rocker arm sprayers, drip irrigation pipes, and drip irrigation belts, etc. The pumped water passes through a sand filter, a laminated filter, and a water-fertilizer integrated machine to reach the target soil 300 for irrigation. The fertilizer in the water-fertilizer integrated machine is pumped from various fertilizers by a fertilizer pump according to a preset ratio.

[0123] When the management platform 200 determines that at least one target soil in the target soils 300 needs to be irrigated according to the soil moisture data detected by the soil moisture sensor 101 in each target soil 300, an opening instruction is sent to the water pump 102 and the electromagnetic valve 103 corresponding to the target soil 300 in a wireless or wired manner. The water pump 102 and the electromagnetic valve 103 are opened after receiving the instruction, and the electromagnetic valve 103 feeds back an opening state signal to the valve controller. At the same time, the pressure gauge and / or the flow meter arranged at the outlet of the electromagnetic valve 103 start to detect and send the detected data to the management platform 200 to determine whether the electromagnetic valve 103 is open. The management platform can be a mobile phone, a computer, or other terminal devices that can communicate and process data. The field weather station can also include a wind speed sensor, a wind direction sensor, a rain sensor, an atmospheric pressure sensor, a noise sensor, etc.

[0124] If the management platform 200 predicts that the soil moisture data in the target soil 300 after rainfall can meet the growth needs of the current growth period of crops within a preset time according to the rainfall data detected by the rain sensor, an opening instruction will not be sent even if the target soil 300 needs to be irrigated at present. The preset time can be 2h, 3h, 4h, etc., which is not limited herein.

[0125] The management platform 200 determines whether there is a fault in the system according to the control instruction, the state of the electromagnetic valve and the feedback state signal, and generates a prompt signal according to the determination result, sends corresponding prompt information to the user, and the indicator light displays a corresponding color according to the prompt signal.

[0126] When the soil moisture sensor 101 detects that the soil moisture data is greater than the upper limit value of the soil moisture data, and the target soil 300 is in the irrigation state at this time, it is determined that irrigation needs to be stopped. If all the target soils 300 corresponding to the system do not need irrigation, the management platform 200 sends a closing instruction to the water pump 102 and the electromagnetic valve 103, and the water pump 102 and the electromagnetic valve 103 are closed after receiving the instruction, and the electromagnetic valve 103 feeds back a closing state signal to the valve controller; at the same time, the pressure gauge and / or flowmeter arranged at the outlet of the electromagnetic valve 103 start to detect and send the detected data to the management platform 200 to determine whether the electromagnetic valve 103 is closed. Alternatively, if at least one target soil 300 corresponding to the system needs irrigation at this time, and other target soils 300 do not need irrigation, the management platform 200 sends a closing instruction to the electromagnetic valve 103 corresponding to the target soil 300 that does not need irrigation, and the electromagnetic valve 103 is closed after receiving the instruction, and the electromagnetic valve 103 feeds back a closing state signal to the valve controller; at the same time, the pressure gauge 104 and / or flowmeter 105 arranged on the water pipe start to detect and send the detected data to the management platform 200 to determine whether the electromagnetic valve 103 is closed.

[0127] When the soil moisture sensor 101 detects that the soil moisture data is greater than the upper limit value of the soil moisture data, and the target soil 300 is not in the irrigation state at this time, it is determined that irrigation does not need to be performed.

[0128] Alternatively, when the meteorological data detected by the field weather station is not within the preset temperature range, and the target soil 300 is in the irrigation state at this time, irrigation is stopped; or when the meteorological data detected by the field weather station is not within the preset temperature range, and the target soil 300 needs irrigation at this time, the management platform 200 also does not control irrigation.

[0129] After the management platform determines whether there is a fault in the system according to the control instruction, the state of the electromagnetic valve and the feedback state signal, a prompt signal is generated according to the determination result, so that the indicator light displays a corresponding color according to the prompt signal, and the user is sent corresponding prompt information.

[0130] Parts not described in detail in the embodiments of the application can refer to other related embodiments described above, and will not be described here.

[0131] In summary, the embodiment of the present application provides an intelligent irrigation control system with state feedback function, which is composed of a software control platform and a matching hardware device, specifically, the software control platform is a management platform, and the matching hardware device is an irrigation device; the management platform collects the type and planting time of crops on the target soil which needs to be irrigated; and according to the type, planting time and current time of the crops, the current growth period of the crops is determined. Considering that the root depth of different types of crops is different in different growth periods, and the soil moisture condition also needs to be different, the soil moisture condition sensor in the irrigation device detects the soil moisture condition data of the target soil at at least one preset depth, and sends the detected soil moisture condition data to the management platform; the management platform receives the soil moisture condition data, and according to the pre-constructed management decision model, it is determined whether the water pump and the corresponding electromagnetic valve need to be opened or closed. In addition, based on the problem that the electromagnetic valve cannot be accurately identified whether it is opened or closed at the present stage, the pressure gauge or flow meter arranged at the outlet of the electromagnetic valve is detected to improve the accuracy of the state detection of the electromagnetic valve, so as to achieve the real-time feedback of the state of the electromagnetic valve. It can be seen that, according to the type and planting time of the crops, the growth period of the crops is determined, and according to the growth period, the soil moisture condition data of the target soil at a reasonable depth and a reasonable range of soil moisture condition data are determined, so that the irrigation is more reasonable and more scientific, and based on the identification of the state of the electromagnetic valve, the utilization rate of the irrigation water can be improved, and the waste of water resources can be avoided.

[0132] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An intelligent irrigation control system with state feedback function, characterized in that, The application relates to an irrigation equipment and a management platform. The irrigation equipment comprises a soil moisture sensor, a water pump and at least one electromagnetic valve. The soil moisture sensor is used for collecting soil moisture data of a target soil at at least one preset depth and sending the soil moisture data to the management platform. The management platform is used for obtaining the type and planting time of a crop on the target soil, determining the current growth period of the crop according to the type of the crop, the planting time and the current time, and determining the root depth of the crop in the current growth period, and controlling the water pump and the electromagnetic valve corresponding to the target soil according to the type of the crop, the current growth period, the root depth, the soil moisture data and a pre-constructed management decision model. The irrigation equipment further comprises a valve controller or a decoder. The management platform is further used for sending a control instruction to the electromagnetic valve through the valve controller or the decoder, so that the electromagnetic valve is opened or closed based on the control instruction. The valve controller or the decoder is further used for receiving a state feedback signal generated by the electromagnetic valve based on the control instruction. The management platform is further used for generating a prompt signal based on the control instruction, the state feedback signal and the state of the electromagnetic valve, wherein the prompt signal is used for representing whether the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve have faults. The management platform is specifically used for generating a first prompt signal if the control instruction, the state feedback signal and the state of the electromagnetic valve are consistent. The management platform is specifically used for generating a second prompt signal if the control instruction and the state feedback signal are consistent, and the control instruction is inconsistent with the state of the electromagnetic valve. The management platform is specifically used for generating a third prompt signal if the control instruction and the state of the electromagnetic valve are consistent, and the control instruction is inconsistent with the state feedback signal. The management platform is specifically used for generating a fourth prompt signal if the control instruction and the state feedback signal are inconsistent, and the state feedback signal is consistent with the state of the electromagnetic valve. The management platform is specifically used for:

2. The intelligent irrigation control system with state feedback function according to claim 1, characterized in that, selecting target soil moisture data from the soil moisture data at the at least one preset depth according to the root depth; inputting the type of the crop, the current growth period and the root depth into the pre-constructed management decision model to determine the upper limit value and the lower limit value of the soil moisture data of the crop; controlling the water pump and the electromagnetic valve corresponding to the target soil to be opened if the target soil moisture data is smaller than the lower limit value. controlling the water pump and the electromagnetic valve corresponding to the target soil to be closed if the target soil moisture data is larger than the upper limit value. The pre-constructed management decision model comprises an upper limit value and a lower limit value setting table of at least one type of crop soil moisture data.

3. The intelligent irrigation control system with state feedback function according to claim 1, wherein, The upper limit value and the lower limit value setting table of the soil moisture data comprises the growth period of the crop, the upper limit value and the lower limit value of the soil moisture data corresponding to each growth period, and the lower limit value of the soil moisture data range corresponding to each growth period is determined according to the upper limit value of the soil moisture data range corresponding to the growth period and the growth period. The irrigation equipment further comprises a field weather station.

4. The intelligent irrigation control system with state feedback function according to claim 1, wherein, ​ The field meteorological station is configured to detect a current air temperature of the target soil and send the current air temperature to the management platform. The management platform is further configured to not control the water pump and the electromagnetic valve corresponding to the target soil if the current air temperature is not within a preset temperature range.

5. The intelligent irrigation control system with state feedback function according to claim 1, wherein, The irrigation equipment further comprises a pressure gauge and / or a flow meter, wherein the pressure gauge and / or the flow meter are arranged at an outlet of the electromagnetic valve. The pressure gauge is configured to detect pressure data at the outlet of the electromagnetic valve and send the pressure data to the management platform. The flow meter is configured to detect flow data at the outlet of the electromagnetic valve and send the flow data to the management platform. The management platform is further configured to determine that the electromagnetic valve is in an open state if the pressure data is greater than a preset pressure threshold and / or the flow data is greater than a preset flow threshold.

6. The intelligent irrigation control system with state feedback function according to claim 1, wherein, The first prompt signal comprises a first open prompt signal and a first close prompt signal. If the control instruction, the state feedback signal and the state of the electromagnetic valve are all open, the first open prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve are in a normal operating state. If the control instruction, the state feedback signal and the state of the electromagnetic valve are all closed, the first close prompt signal is used to indicate that the intelligent irrigation control system, the valve controller or the decoder and the electromagnetic valve are in a normal closed state. If the control instruction and the state feedback signal are both open and the state of the electromagnetic valve is closed, or the control instruction and the state feedback signal are both closed and the state of the electromagnetic valve is open, the second prompt signal is used to indicate that the state of the electromagnetic valve is abnormal. If the control instruction and the state of the electromagnetic valve are both open and the state feedback signal is closed, or the control instruction and the state of the electromagnetic valve are both closed and the state feedback signal is open, the third prompt signal is used to indicate that the valve controller or the decoder is faulty. If the control instruction is open and the state feedback signal and the state of the electromagnetic valve are closed, or the control instruction is closed and the state feedback signal and the state of the electromagnetic valve are open, the fourth prompt signal is used to indicate that the intelligent irrigation control system is faulty.

7. The intelligent irrigation control system with state feedback function according to claim 6, characterized in that, The irrigation equipment further comprises an indicator light. The indicator light is configured to represent the prompt signal.

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