CN108605826B

CN108605826B - Remote control intelligent gardening irrigation system with fault detection function and control method thereof

Info

Publication number: CN108605826B
Application number: CN201810264003.4A
Authority: CN
Inventors: 隋毅; 姚莹; 隋渝雯
Original assignee: Chongqing University of Science and Technology
Current assignee: Xinjiang Lyeco Construction Co ltd
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2020-10-16
Anticipated expiration: 2038-03-28
Also published as: CN108605826A

Abstract

The invention discloses a remote control intelligent gardening irrigation system with fault detection and a control method thereof, wherein the system comprises an irrigation pipeline system and a wireless control system; the irrigation pipeline system comprises a main pipeline and at least one branch pipeline, and the water pump is connected with a water inlet pipe through a main electrovalve; flow sensors are arranged in the branches; the wireless control system comprises a computer, the computer is connected with a GSM controller through first usb data acquisition equipment to acquire an irrigation instruction sent by the mobile phone, and the computer is also connected with an external environment monitoring module and a flow sensor through second usb data acquisition equipment; be provided with labVIEW control system in the computer, labVIEW control system controls total solenoid valve, water pump and divides solenoid valve work through first usb data acquisition equipment. The computer is also connected with a first pressure sensor, a liquid level sensor and a current sensor; and the computer detects system faults according to the signals of the sensors. The intelligent remote irrigation system can realize intellectualization and intelligent remote irrigation with fault detection.

Description

Remote control intelligent gardening irrigation system with fault detection function and control method thereof

Technical Field

The invention relates to the field of garden equipment, in particular to a remote control intelligent gardening irrigation system with fault detection and a control method thereof.

Background

Aiming at remote gardening (garden) irrigation systems, products on the market or published documents and the like, the general idea or principle that a mobile phone sends starting and stopping signals and a GSM controller receives the mobile phone signals and then controls related equipment to work and stop is mainly adopted.

Existing products, granted patents, published documents and the like mainly construct a function implementation method with novelty around the general idea or principle, although the remote irrigation functions of plants, crops and the like can be realized, but the feasibility analysis research is not carried out on core levels such as intellectualization, reliability, control quality and the like of a remote irrigation system which is more concerned by users, in particular to precious crops and plant gardens with less requirements on intellectualization (less manual demands), high control precision and reliability, once the remote irrigation system has the problems that irrigation is not carried out or irrigation cannot be stopped and the like, crops, plants are dried or dead due to waterlogging, loss cannot be compensated, and specific defects are shown:

1. the control accuracy is not sufficient. Most irrigation systems adopt a time relay to set time to determine irrigation quantity, the irrigation quantity is calculated through the time, and the influence of instability of fluid flow on a calculation result is not considered, so that the difference between the theoretical requirement and the actual irrigation quantity is large.

2. The intelligence is not sufficient. (1) Most irrigation systems adopt the switch-on and switch-off of the corresponding pin of output of cell-phone remote control GSM, and cell-phone APP needs the start and stop two virtual buttons of same watering task promptly, needs artificial click to open and close, and the system can not automatic identification watering and finishes and close executor such as water pump, valve. (2) Intelligent remote irrigation requires comprehensive analysis according to the expected irrigation amount of crops and plants to be irrigated and the actual environment (rain season, air humidity and ambient temperature) and gives the irrigation amount required by the real-time irrigation, and the current remote irrigation system does not have the intelligent function.

3. The reliability is not high. The valves and the water pumps of most of remote irrigation systems are directly controlled to be turned on and off by a GSM remote controller, namely the GSM controller serves as an alternating current relay and has the functions of switching on and switching off a high-voltage high-power loop, a high-current alternating current relay is an electric device with high professional requirements, an industrial or civil alternating current relay needs to be tested by an authoritative detection mechanism, the relay function of the existing GSM controller is not detected by the authoritative mechanism, the GSM controller is directly used for controlling the power equipment to be turned on and off, and the reliability risk exists.

4. The specialty is not strong. Most remote irrigation systems realize the functions of irrigation and stopping by controlling the starting and stopping functions of an actuator through hard wire signals, do not adopt an online monitoring control program developed by professional measurement and control software in the fluid flow industry, and have low specialty.

Although the patent and literature of the prior remote gardening irrigation system can realize the remote control irrigation function of plants, crops and the like, most of the prior remote gardening irrigation system does not have the capability of diagnosing system faults, namely the prior remote gardening irrigation system has the closing functions of a water pump and a valve when the system is abnormal, for example, the prior remote gardening irrigation system can be closed through a time relay with set time when the water pump cannot be closed; for another example, when the conventional irrigation system fails to start the main solenoid valve, the water pump is started, and the pressure switch (disconnected when the pressure is too high or too low) is connected in series with the power supply of the water pump to play a protection role. However, for whether the current irrigation is finished, whether the system has faults and what kind of faults, the intelligent judgment and the mobile phone remote alarm function cannot be achieved.

Although the method plays an abnormal role in protecting the system, whether the most concerned remote irrigation is realized in the irrigation, whether the actual irrigation is expected, and the correct judgment cannot be made, the intellectualization is insufficient, and the fault diagnosis function is lacked, which is also the defect of the existing remote irrigation system.

Although few irrigation system products in the market have fault diagnosis function publicity, for example, fault alarm can receive information through a mobile phone, the specific conditions of the diagnosis function are not specifically described, namely, diagnosis strategies, diagnosis logics and fault point judgment basis descriptions are not provided.

Disclosure of Invention

In view of at least one defect of the prior art, the invention aims to provide a remote control intelligent gardening irrigation system with fault detection and a control method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme that the remote control intelligent gardening irrigation system with fault detection comprises an irrigation pipeline system and a wireless control system;

the irrigation pipeline system comprises a main circuit and at least one branch circuit, wherein a water pump is arranged in the main circuit, and branch electromagnetic valves are arranged in the branch circuits;

the wireless control system comprises a mobile phone and a GSM controller in wireless connection with the mobile phone;

the key points are as follows: a main electromagnetic valve is also arranged in the main road, and the water pump is connected with a water inlet pipe through the main electromagnetic valve;

flow sensors are arranged in the branch circuits, inlets of the branch electromagnetic valves are communicated with outlets of the main circuit, outlets of the branch electromagnetic valves are connected with branch circuit water outlet pipes, and the flow sensors are mounted on the branch circuit water outlet pipes and used for collecting flow data;

the wireless control system also comprises a computer, wherein the computer is connected with the GSM controller through a first usb data acquisition device to acquire an irrigation instruction sent by the mobile phone, and an irrigation area is determined according to the irrigation instruction; the computer is also connected with an external environment monitoring module and a flow sensor through second usb data acquisition equipment, and the external environment monitoring module is used for detecting external environment monitoring data;

a labVIEW control system is arranged in the computer and calculates the actual irrigation quantity according to the theoretical irrigation quantity and the external environment monitoring data; the labVIEW control system sends control signals to the first usb data acquisition equipment according to actual irrigation volume and flow data, and the first usb data acquisition equipment controls the work of the main electromagnetic valve, the water pump and the branch electromagnetic valves through corresponding branch relays.

According to the invention, through the structure arrangement, a user sends an irrigation instruction through an APP arranged in a mobile phone, the irrigation instruction is provided with an irrigation area, each branch corresponds to one irrigation area for watering, the irrigation instruction is transmitted to first usb data acquisition equipment through a GSM controller, and the first usb data acquisition equipment is transmitted to a computer through usb data lines.

The computer is also connected with an external environment monitoring module through a second usb data acquisition device, the external environment monitoring module is used for detecting external environment monitoring data, the external environment monitoring data comprise rainfall, ambient temperature and atmospheric humidity, the theoretical irrigation quantity of each irrigation area is stored in the labVIEW control system, and the labVIEW control system calculates the actual irrigation quantity of each irrigation area according to the theoretical irrigation quantity and the external environment monitoring data.

Then sending a control signal to the first usb data acquisition equipment, controlling the coil of the corresponding branch relay to be powered on and powered off through an internal switch of the first usb data acquisition equipment, controlling the main electromagnetic valve to be opened by a normally open switch of the branch relay, opening the water pump, and opening the corresponding branch electromagnetic valve to water the corresponding irrigation area;

the computer detects the real-time irrigation quantity of each branch through the flow sensor of each branch, and when the real-time irrigation quantity reaches the actual irrigation quantity of the irrigation area, the branch electromagnetic valve of each branch is controlled to be closed until all the irrigation areas set by the irrigation instructions are irrigated.

Compared with the prior art, the invention has the following advantages:

1. the control precision is high, the irrigation amount is determined by adopting the flow sensor, and the actual irrigation amount is not greatly different from the actual demand;

2. the intelligent degree is high, and cell-phone APP only need assign irrigate regional watering task can, the relevant irrigation area of system automatic identification water end and close the water pump, divide solenoid valve, total solenoid valve.

3. The labVIEW control system comprehensively analyzes and gives regular actual irrigation quantities according to the crops to be irrigated, expected irrigation quantities of plants and actual environments such as rainwater seasons, air humidity and ambient temperature.

4. The invention has high reliability, and the invention adopts the heavy current AC relay to control the power equipment switch.

5. The method has strong specialization, and the online monitoring LabVIEW control system developed by adopting professional measurement and control software in the fluid flow industry has strong specialization.

The function of total solenoid valve is convenient for system's spare part to change, plays the master gate effect.

The labVIEW control system determines an irrigation area according to the irrigation instruction, and determines a theoretical irrigation quantity according to the irrigation area, wherein the theoretical irrigation quantity is V_{Theory of the invention}Is represented by V_{Theory of the invention}Is the theoretical irrigation quantity in m at 25 ℃ and 60% humidity³(ii) a Theoretical irrigation volume V_{Theory of the invention}The method comprises the steps that a user stores the data in a labVIEW control system in advance;

according to external environmental monitoringData calculation V_{Rainfall device}，V_{Rainfall device}The unit m is the rain irrigation quantity converted from actual rainfall³；

Calculating V according to external environment monitoring data_{Ambient temperature}，V_{Ambient temperature}The extra required irrigation quantity is caused by the high and low air temperature, and the unit m³(ii) a At a temperature below 25 ℃ V_{Ambient temperature}Negative, above 25 ℃ V_{Ambient temperature}The temperature is a mean value of the temperature between the last time and the current irrigation;

calculating V according to external environment monitoring data_Humidity，V_HumidityAdditional required irrigation volume in m for humidity level³(ii) a V when the humidity is lower than 60%_HumidityPositive value, V when humidity is higher than 60%_HumidityThe humidity is a negative value and is an average value of the humidity between the last time and the current irrigation;

calculating actual irrigation quantity, wherein the actual irrigation quantity is the current actual required irrigation quantity and the actual irrigation quantity is V_{Practice of}；

V_{Practice of}＝V_{Theory of the invention}-V_{Rainfall device}+V_{Ambient temperature}+V_Humidity

The irrigation system has the advantages that influences of rain season, ambient temperature and ambient humidity on actual irrigation quantity in different periods are fully considered, real-time data monitoring is adopted, a dynamic irrigation quantity mathematical model is established, irrigation quantity in different periods is adjusted, the system automatically records the last irrigation time, current irrigation is calculated according to previous irrigation interval rainfall, temperature change and humidity change, and high-quality irrigation effect is achieved.

External environment monitoring module is provided with rainfall sensor, temperature sensor and humidity transducer, and rainfall sensor is used for detecting external environment's rainfall, and temperature sensor is used for detecting external environment's temperature, and humidity transducer is used for detecting external environment's atmospheric humidity.

Through the structural arrangement, the external environment monitoring module acquires rainfall of an irrigation region through the rainfall sensor, detects the environmental temperature of the irrigation region according to the temperature sensor, acquires the atmospheric humidity of the irrigation region through the humidity sensor, and sends the data to the labVIEW control system in the computer, and the theoretical irrigation amount is stored in the labVIEW control system by a user in advance; the labVIEW control system corrects the theoretical irrigation quantity according to the data to meet the actual requirements of the relevant irrigation areas.

And the branch circuits are all provided with balance valves which are arranged between the distribution electromagnetic valve and the flow sensor.

The balance valve is used for balancing the flow of each irrigation area, and water conservancy imbalance is avoided, so that water conservancy balance is realized.

The computer is also connected with a first pressure sensor, a liquid level sensor and a current sensor through second usb data acquisition equipment; the first pressure sensor is arranged at the outlet of the water pump and used for detecting the outlet pressure of the water pump; the liquid level sensor is used for detecting the liquid level height of a water source; two detection ends of the current sensor are connected into a power supply loop of the water pump in series and used for detecting a current signal of the water pump; two output ends of the current sensor are connected with a second usb data acquisition device.

The first pressure sensor is used for judging whether the system has faults or not through the labVIEW control system when the pressure of the main road is too high or too low, and protecting the irrigation pipeline system and the water pump;

the liquid level sensor is used for alarming when the liquid level of the water surface pumped is lower than the water pumping port of the water pump.

The current sensor is used for detecting a working current signal of the water pump and transmitting the working current signal to the labVIEW control system, and the labVIEW control system analyzes whether the water pump works normally or not.

The branch water outlet pipe is also connected with at least one watering branch, the watering branch is provided with a watering solenoid valve, the inlet of the watering solenoid valve is connected with the branch water outlet pipe, and the outlet of the watering solenoid valve is connected with a watering pipe; the computer still sends the branch control signal to first usb data acquisition equipment, and first usb data acquisition equipment controls the solenoid valve switch that waters through corresponding branch relay.

The effect that above-mentioned structure set up does: a plurality of watering pipes are adopted in one irrigation area for watering, each part of the irrigation area can be watered on average, the irrigation quantity of each watering pipe is equal to the actual irrigation quantity of the irrigation area divided by the number of watering branches, a computer controls the coils of corresponding branch relays to be powered on and powered off through first usb data acquisition equipment, and normally open switches of corresponding branch relays control watering electromagnetic valves to be switched on and off in turn, so that each part of the irrigation area is watered in turn.

The branch water outlet pipe is further connected with an overflow valve, the overflow valve comprises a cylindrical shell, a cavity is formed in the shell, a water inlet is formed in one end of the shell, the water inlet is connected with the branch water outlet pipe, a piston is arranged in the cavity in a sliding mode, the piston is connected with one side, away from the water inlet, of the cavity through a spring, an overflow hole is formed in the outer wall of the shell, the overflow hole is located on one side, away from the water inlet, of the piston, and the piston can slide towards one side, away from the water inlet.

In order to avoid the pressure explosion of the branch water outlet pipe due to overhigh pressure of the system, the branch water outlet pipe is also connected with an overflow valve, when the pressure of the system is overhigh, the overflow pressure pushes a piston to slide towards one side far away from a water inlet, the piston compresses a spring to open an overflow hole, and the branch water outlet pipe overflows from the overflow hole to protect the safety of the branch water outlet pipe.

The branch road outlet pipe still is provided with second pressure sensor, and second pressure sensor is used for detecting branch road outlet pipe pressure, and the computer is connected second pressure sensor through second usb data acquisition equipment.

And the second pressure sensor transmits the pressure of the branch water outlet pipe to a labVIEW control system in a computer, and when the pressure of the branch water outlet pipe is too high, the labVIEW control system closes a main electromagnetic valve and a water pump or sends alarm information to a mobile phone.

A control method of a remote control intelligent gardening irrigation system with fault detection is suitable for the remote control intelligent gardening irrigation system with fault detection; the key points are as follows: the labVIEW control system is provided with a multi-channel irrigation control flow, a system starting control flow and a system closing control flow;

the labVIEW control system also sends the fault information to the mobile phone through the GSM controller;

the multi-channel irrigation control process comprises the following steps;

step B1: the labVIEW control system acquires a branch or a plurality of branches of irrigation instructions sent by the mobile phone through the GSM controller;

the labVIEW control system determines irrigation areas according to the irrigation instructions, the irrigation areas are either one irrigation area or more than one irrigation area, each branch is used for watering the corresponding irrigation area, the theoretical irrigation quantity of each irrigation area is determined according to the irrigation areas, and the actual irrigation quantity of each irrigation area is calculated according to the theoretical irrigation quantity of each irrigation area and external environment monitoring data;

step B2: the labVIEW control system acquires a signal of the liquid level sensor, analyzes whether the liquid level is normal or not, if not, turns to the step B3, otherwise, turns to the step B4;

step B3: the labVIEW control system reports the alarm of the low water level to the mobile phone through the GSM controller, and the process is finished;

step B4: the labVIEW control system sends a signal to control the opening of the main electromagnetic valve;

step B5: the labVIEW control system delays for 5s to send a signal to control the water pump to start;

step B6: the labVIEW control system delays for 5s to acquire a signal of the first pressure sensor, and judges whether the water pump outlet pressure is 4.5-5bar after the water pump is started for 5 s? If yes, go to step B7; otherwise, starting the control flow by the system;

step B7: the labVIEW control system acquires signals of the flow sensor and detects whether the flow of all branches is less than 0.1m³H? If yes, go to step B9; otherwise, go to step B8;

step B8: the labVIEW control system reports the closing failure fault of the corresponding branch electromagnetic valve to the mobile phone, closes the water pump, delays 3s to close the main electromagnetic valve, and then ends;

step B9: the labVIEW control system sends a signal to control all branch electromagnetic valves of branches related to the irrigation command to be opened;

step B10: the labVIEW control system respectively collects the irrigation quantity of each branch through the corresponding flow sensor;

step B11: the labVIEW control system sequentially detects each branch, and determines whether the irrigation quantity of each branch reaches a corresponding set threshold and the corresponding branch solenoid valve is not closed? The set threshold value is the actual irrigation amount; if yes, go to step B12; otherwise, go to step B10;

the set threshold value is the actual irrigation quantity of the irrigation area;

for example, when a total of 5 branches are irrigating, the labVIEW control system sequentially detects 1 to 5 branches, and when it is detected that the 3 rd branch reaches the set threshold and the corresponding branch solenoid valve is not closed, go to step B12, and if none of the 5 branches reaches the set threshold, or it is detected that the 2 nd branch reaches the set threshold and the corresponding branch solenoid valve is closed, go to step B10;

step B12: the labVIEW control system sends a signal to control the branch electromagnetic valve to be closed;

step B13: the labVIEW control system detects whether the branch flow is less than 0.1m³H? If yes, go to step B14, otherwise, go to step B15;

step B14: the labVIEW control system detects whether all the branch electromagnetic valves are closed, and if so, the step B16 is executed; otherwise, go to step B10;

step B15: the labVIEW control system judges the closing failure fault of the branch electromagnetic valve, sends the closing failure fault of the branch electromagnetic valve to the mobile phone through the GSM controller, and sends a signal to close the water pump; then delaying 3s to send a signal to close all the other branch electromagnetic valves and the main electromagnetic valve, and ending;

step B16: the labVIEW control system sends a signal to control the water pump to be closed;

step B17: the labVIEW control system delays for 3s and sends a signal to control the closing of the main electromagnetic valve;

step B18: labVIEW control system detects that water pump outlet pressure is less than or equal to 1 bar? If yes, the system is switched to close the control flow; if not, go to step B19;

step B19: the labVIEW control system sends the water pump and the master electromagnetic valve not to be closed fault to the mobile phone through the GSM controller, and the operation is finished;

the system shutdown control flow comprises the following steps:

step C1: the labVIEW control system acquires the signal of the current sensor and detects whether the working current of the water pump is zero? If yes, go to step C2, otherwise go to step C3;

step C2: the labVIEW control system judges that the water pump is closed; the labVIEW control system sends a system normal signal to the mobile phone through the GSM controller, and the operation is finished;

step C3: the labVIEW control system judges that the main electromagnetic valve is closed and the water pump is not closed, and sends a fault that the water pump is not closed to the mobile phone through the GSM controller, and the operation is finished;

the system starting control flow comprises the following steps:

step D1: the labVIEW control system acquires the signal of the current sensor and detects whether the working current of the water pump exceeds a limit value? If yes, go to step D2; otherwise, go to step D3;

the limiting value is a set threshold value of the working current of the water pump;

step D2: the labVIEW control system sends a signal to control the water pump to be closed, the general electromagnetic valve is judged to be not opened to cause a fault, the labVIEW control system sends the general electromagnetic valve to be not opened to cause a fault to the mobile phone through the GSM controller, and the operation is finished;

step D3: is the labVIEW control system detecting that the pump operating current is zero? If yes, go to step D4, otherwise go to step D5;

step D4: the labVIEW control system sends a signal to control the water pump to be closed, and then sends a signal to control the main electromagnetic valve to be closed; the labVIEW control system judges the water pump starting failure fault, the labVIEW sends the water pump starting failure fault to the mobile phone through the GSM controller, and the operation is finished;

step D5: the labVIEW control system sends a signal to control the water pump to be closed; then sending a signal to control the main electromagnetic valve to be closed;

the labVIEW control system judges that the water pump is controlled to be unstable and fails; and sending the water pump control instability fault to the mobile phone by the labVIEW control system, and ending.

Unstable control of the water pump means that the output pressure of the water pump is not normal.

The multi-channel irrigation control flow, the system starting control flow and the system closing control flow which are arranged by the labVIEW control system have the capability of system fault diagnosis, can report the alarm of too low water level, the failure fault of closing of the branch electromagnetic valves, the failure fault of not closing the water pump, the failure fault of not opening the main electromagnetic valves, the failure fault of starting the water pump and the fault of unstable control of the water pump to a mobile phone, can identify whether the system has the fault and what kind of the fault exists, and can realize the functions of intelligent judgment and remote alarm of the mobile phone.

The control method of the remote control intelligent gardening irrigation system with fault detection is characterized in that in the step B1, the labVIEW control system determines the theoretical irrigation quantity of each irrigation area according to the irrigation areas, and the calculation of the actual irrigation quantity of each irrigation area according to the theoretical irrigation quantity of each irrigation area and the external environment monitoring data comprises the following steps:

step B01: the labVIEW control system determines a theoretical irrigation volume from the irrigation area, the theoretical irrigation volume using V_{Theory of the invention}Is represented by V_{Theory of the invention}Is the theoretical irrigation quantity in m at 25 ℃ and 60% humidity³；

Step B02: the labVIEW control system calculates V according to the external environment monitoring data_{Rainfall device}，V_{Rainfall device}The unit m is the rain irrigation quantity converted from actual rainfall³；

step B03: the labVIEW control system calculates the actual irrigation volume asThe actual irrigation quantity required at present and the actual irrigation quantity V_{Practice of}；

V_{Practice of}＝V_{Theory of the invention}-V_{Rainfall device}+V_{Ambient temperature}+V_Humidity。

The control method for the remote control intelligent gardening irrigation system with fault detection is characterized in that in the step B9, after the labVIEW control system controls the corresponding branch electromagnetic valves to be opened, the watering electromagnetic valves of the branches are controlled to be opened and closed in sequence according to the average watering amount, water is supplied to each watering branch according to the average watering amount, and the average watering amount uses V_{Flat plate}Indicating that the average irrigation volume was also monitored by the flow sensor;

V_{flat plate}＝V_{Practice of}And M is the number of irrigation branches.

Through the arrangement of the method, the labVIEW control system controls the watering electromagnetic valves to be opened and closed in sequence, namely, the first watering electromagnetic valve is opened firstly to water the first watering position, the first watering electromagnetic valve is controlled to be closed after the average watering amount is reached, the second watering electromagnetic valve is opened to water the second watering position, and the like.

The control method of the remote control intelligent gardening irrigation system with fault detection is characterized in that in the step B9, after the labVIEW control system controls the opening of the branch electromagnetic valves of the related branches, the labVIEW control system detects the water outlet pressure of the water outlet pipe of the corresponding branch through the corresponding second pressure sensor, and judges whether the water outlet pressure is greater than 5 bar? The bar is a pressure unit, if the bar is more than 5bar, all the sub-electromagnetic valves are controlled to be closed, the water pump is closed, the main electromagnetic valve is closed, and the process is finished; otherwise go to step B10.

Through the arrangement of the method, if the labVIEW control system detects that the water outlet pressure of the branch water outlet pipe is greater than 5bar, the corresponding branch electromagnetic valve, the water pump and the main electromagnetic valve are controlled to be closed, and the branch water outlet pipe is prevented from being pressed and exploded due to blockage or damage of the watering electromagnetic valve.

The invention provides a remote control intelligent gardening irrigation system with fault detection and a control method thereof, wherein a professional labVIEW control system is adopted, two usb drivers with usb special data acquisition and driving functions are used as key components of the intelligent gardening irrigation system, a special liquid level sensor, a current sensor and a pressure sensor are matched, software carries out closed-loop control on the system by adopting a method of key parameter information feedback, analysis and comparison, so that intelligent judgment of component faults is realized, a GSM controller sends the fault.

Drawings

FIG. 1 is a block diagram of an irrigation pipe system according to the present invention.

FIG. 2 is a circuit diagram of a wireless control system according to the present invention;

FIG. 3 is a flow chart of a multi-channel irrigation control process;

FIG. 4 is a flow chart of a system shutdown control flow;

fig. 5 is a flowchart of the system startup control flow.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

As shown in fig. 1-5, the present invention provides a remote control intelligent gardening irrigation system with fault detection, which comprises an irrigation pipeline system 1 and a wireless control system 2;

the irrigation pipeline system 1 comprises a main circuit and at least one branch circuit, wherein a water pump 11 is arranged in the main circuit, and branch electromagnetic valves 12 are arranged in the branch circuits;

the present embodiment is provided with a main circuit and three branches, and the branch electromagnetic valves 12 of the three branches are a branch electromagnetic valve a, a branch electromagnetic valve B, and a branch electromagnetic valve N, respectively.

The wireless control system 2 comprises a mobile phone 21 and a GSM controller 22 wirelessly connected with the mobile phone 21;

a main electromagnetic valve 13 is also arranged in the main road, and the water pump 11 is connected with a water inlet pipe 31 through the main electromagnetic valve 13; the water inlet pipe 31 is connected with a reservoir;

the branch circuits are all provided with flow sensors 14, the flow sensors 14 in the three branch circuits are respectively a flow sensor A, a flow sensor B and a flow sensor N, an inlet of the branch electromagnetic valve 12 is communicated with an outlet of the main circuit, an outlet of the branch electromagnetic valve 12 is connected with a branch circuit water outlet pipe 32, and the flow sensors 14 are arranged on the branch circuit water outlet pipe 32 and used for collecting flow data of the branch circuit water outlet pipe 32;

the wireless control system 2 further comprises a computer 23, the computer 23 is connected with the GSM controller 22 through a first usb data acquisition device 24 to obtain the irrigation instruction sent by the mobile phone 21, and the irrigation area is determined according to the irrigation instruction; the computer 23 is also connected with an external environment monitoring module 26 and the flow sensor 14 through a second usb data acquisition device 25, and the external environment monitoring module 26 is used for detecting external environment monitoring data;

a labVIEW control system is arranged in the computer 23 and calculates actual irrigation quantity according to theoretical irrigation quantity and external environment monitoring data; the labVIEW control system sends a control signal to the first usb data acquisition equipment 24 according to the actual irrigation volume and the actual flow data, and the first usb data acquisition equipment 24 controls the main electromagnetic valve 13, the water pump 11 and the branch electromagnetic valves 12 to work through corresponding branch relays.

According to the invention, through the structure arrangement, a user sends an irrigation instruction through the APP arranged in the mobile phone 21, the irrigation instruction is provided with an irrigation area, each branch corresponds to one irrigation area for watering, the irrigation instruction is transmitted to the first usb data acquisition device 24 through the GSM controller 22, and the first usb data acquisition device 24 is transmitted to the computer 23 through the usb data line.

The computer 23 is further connected with an external environment monitoring module 26 through a second usb data acquisition device 25, the external environment monitoring module 26 is used for detecting external environment monitoring data, the external environment monitoring data comprises rainfall, ambient temperature and atmospheric humidity, the labVIEW control system stores theoretical irrigation amount of each irrigation area, and the labVIEW control system calculates actual irrigation amount of each irrigation area according to the theoretical irrigation amount and the external environment monitoring data.

Then sending a control signal to the first usb data acquisition device 24, controlling the coil of the corresponding branch relay to be powered on and powered off through an internal switch of the first usb data acquisition device 24, controlling the main electromagnetic valve 13 to be opened through a normally open switch of the branch relay, opening the water pump 11, and opening the corresponding branch electromagnetic valve 12 to water the corresponding irrigation area;

the computer 23 detects the real-time irrigation quantity of each branch through the flow sensor 14 of each branch, and when the real-time irrigation quantity reaches the actual irrigation quantity of the irrigation area, the branch electromagnetic valve 12 of each branch is controlled to be closed until all the irrigation areas set by the irrigation instructions are irrigated.

The master electromagnetic valve 13 is used for acting as a master brake when the system parts are replaced.

External environment monitoring module 26 is provided with rainfall sensor, temperature sensor and humidity transducer, and rainfall sensor is used for detecting external environment's rainfall, and temperature sensor is used for detecting external environment's temperature, and humidity transducer is used for detecting external environment's atmospheric humidity.

Through the structure setting, the external environment monitoring module 26 acquires rainfall of an irrigation region through the rainfall sensor, detects the environmental temperature of the irrigation region according to the temperature sensor, acquires the atmospheric humidity of the irrigation region through the humidity sensor, sends the data to the labVIEW control system in the computer 23, and the labVIEW control system corrects the theoretical irrigation quantity according to the data so as to meet the actual requirements of the relevant irrigation region.

The branch circuits are all provided with a balance valve 15, the balance valves 15 in the three branch circuits are a balance valve A, a balance valve B and a balance valve N respectively, and the balance valves 15 are arranged between the sub-electromagnetic valve 12 and the flow sensor 14.

The balance valve 15 is used for balancing the flow of each irrigation area, and water conservancy imbalance is avoided, so that water conservancy balance is realized.

The computer 23 is also connected with a first pressure sensor 16, a liquid level sensor 17 and a current sensor 18 through a second usb data acquisition device 25; the first pressure sensor 16 is arranged at the outlet of the water pump 11 and used for detecting the outlet pressure of the water pump 11; the liquid level sensor 17 is used for detecting the liquid level height of the water source; two detection ends of the current sensor 18 are connected in series to a power supply loop of the water pump 11 and used for detecting a current signal of the water pump 11; two outputs of the current sensor 18 are connected to a second usb data acquisition device 25.

The first pressure sensor 16 is used for judging whether the system has faults through the labVIEW control system when the pressure of the main road is too high or too low, and protecting the irrigation pipeline system 1 and the water pump 11;

the water source is a reservoir, and a water inlet pipe 31 is communicated with the reservoir; the liquid level sensor 17 is arranged in the water storage tank and used for detecting the liquid level in the water storage tank;

the liquid level sensor 17 is used for alarming when the liquid level of the water surface pumped is lower than the water pumping port of the water pump 11.

The current sensor 18 is used for detecting a working current signal of the water pump 11 and transmitting the working current signal to the labVIEW control system, and the labVIEW control system analyzes whether the water pump 11 works normally or not.

The branch water outlet pipe 32 is also connected with at least one watering branch, the watering branch is provided with a watering solenoid valve 19, the inlet of the watering solenoid valve 19 is connected with the branch water outlet pipe 32, and the outlet of the watering solenoid valve 19 is connected with a watering pipe 33; the computer 23 also sends a shunt control signal to the first usb data acquisition device 24, and the first usb data acquisition device 24 controls the on-off of the watering solenoid valve 19 through a corresponding shunt relay.

The effect that above-mentioned structure set up does: a plurality of watering pipes 33 are adopted for watering in an irrigation area, each part of the irrigation area can be watered averagely, the irrigation quantity of each watering pipe 33 is equal to the actual irrigation quantity of the irrigation area divided by the number of watering branches, the computer 23 also controls the coil of the corresponding branch relay to be powered on and powered off through the first usb data acquisition equipment 24, and the normally open switch of the corresponding branch relay controls the watering electromagnetic valve 19 to be switched on and off in turn, so that each part of the irrigation area is watered in turn.

The branch water outlet pipe 32 is further connected with an overflow valve 20, the overflow valve 20 comprises a cylindrical shell 201, a cavity is arranged in the shell 201, a water inlet 202 is formed in one end of the shell 201, the water inlet 202 is connected with the branch water outlet pipe 32, a piston 203 is arranged in the cavity in a sliding mode, the piston 203 is connected with one side, away from the water inlet 202, of the cavity through a spring 204, an overflow hole 201a is formed in the outer wall of the shell 201, the overflow hole 201a is located on one side, away from the water inlet 202, of the piston 203, and the piston 203 can slide towards one side, away from the water inlet 202, under the.

In order to avoid the pressure explosion of the branch water outlet pipe 32 caused by the overhigh pressure of the system, the branch water outlet pipe 32 is further connected with an overflow valve 20, when the pressure of the system is overhigh, the overflow pressure pushes a piston 203 to slide towards one side far away from a water inlet 202, the piston 203 compresses a spring 204, an overflow hole 201a is opened, the branch water outlet pipe 32 overflows from the overflow hole 201a, and the safety of the branch water outlet pipe 32 is protected.

The branch water outlet pipe 32 is further provided with a second pressure sensor 34, the second pressure sensor 34 is used for detecting the pressure of the branch water outlet pipe 32, and the computer 23 is connected with the second pressure sensor 34 through a second usb data acquisition device 25.

The second pressure sensor 34 transmits the pressure of the branch water outlet pipe 32 to the labVIEW control system in the computer 23, and when the pressure of the branch water outlet pipe 32 is too high, the labVIEW control system closes the main electromagnetic valve 13 and the water pump 11 or sends alarm information to the mobile phone 21.

The labVIEW control system determines an irrigation area according to the irrigation instruction, and determines a theoretical irrigation quantity according to the irrigation area, wherein the theoretical irrigation quantity is V_{Theory of the invention}Is represented by V_{Theory of the invention}Is the theoretical irrigation quantity in m at 25 ℃ and 60% humidity³(ii) a V for theoretical irrigation amount_{Theory of the invention}The method comprises the steps that a user stores the data in a labVIEW control system in advance;

calculating V according to external environment monitoring data_{Rainfall device}，V_{Rainfall device}The unit m is the rain irrigation quantity converted from actual rainfall³；

V_{Practice of}＝V_{Theory of the invention}-V_{Rainfall device}+V_{Ambient temperature}+V _Humidity1

In the present embodiment, the calculation method is such that V is calculated every time the air temperature increases or decreases by one degree_{Ambient temperature}Increase or decrease of irrigation volume V_{Theory of the invention}One hundredth of; v for every rise or fall in humidity_HumidityIncrease or decrease of irrigation volume V_{Theory of the invention}One hundredth of the total. V_{Rainfall device}And calculating by adopting the product of the detection value of the rainfall sensor and the area of the irrigation area. The method can also be adjusted according to actual plant species and actual experience so as to meet the optimal requirements of plants.

Referring to fig. 3 to 5, the present invention further provides a control method of the remote-control intelligent horticultural irrigation system with fault detection, which is suitable for the remote-control intelligent horticultural irrigation system with fault detection; the key points are as follows: the labVIEW control system is provided with a multi-channel irrigation control flow, a system starting control flow and a system closing control flow;

the labVIEW control system also sends the fault information to the mobile phone 21 through the GSM controller 22;

the multi-channel irrigation control process comprises the following steps;

step B1: the labVIEW control system acquires one or more irrigation instructions sent by the mobile phone 21 through the GSM controller 22;

step B2: the labVIEW control system acquires a signal of the liquid level sensor 17, analyzes whether the liquid level is normal or not, if not, turns to the step B3, otherwise turns to the step B4;

step B3: the labVIEW control system reports the alarm of too low water level to the mobile phone 21 through the GSM controller 22, and the process is finished;

step B4: the labVIEW control system sends a signal to control the opening of the main electromagnetic valve 13;

step B5: the labVIEW control system delays for 5s and sends a signal to control the water pump 11 to start;

step B6: the labVIEW control system delays 5s to acquire the signal of the first pressure sensor 16, and determines whether the outlet pressure of the water pump 11 is 4.5-5bar after the water pump 11 is started for 5 s? bar is the unit of pressure, if yes, go to step B7; otherwise, starting the control flow by the system;

step B7: the labVIEW control system acquires the signal of the flow sensor 14, and detects whether the flow of all branches is less than 0.1m³H? If yes, go to step B9; otherwise, go to step B8;

step B8: the labVIEW control system reports a closing failure fault of the corresponding partial electromagnetic valve 12 to the mobile phone 21, closes the water pump 11, delays 3s to close the main electromagnetic valve 13, and then ends;

step B9: the labVIEW control system sends a signal to control all branch electromagnetic valves 12 of branches related to the irrigation command to be opened;

step B10: the labVIEW control system respectively collects the irrigation quantity of each branch through the corresponding flow sensor 14;

step B11: the labVIEW control system sequentially detects each branch, and determines whether the irrigation volume of each branch reaches the corresponding set threshold and the corresponding branch solenoid valve 12 is not closed? The set threshold value is the actual irrigation amount; if yes, go to step B12; otherwise, go to step B10;

for example, when a total of 5 branches are irrigating, the labVIEW control system sequentially detects 1 to 5 branches, when it is detected that the 3 rd branch reaches the set threshold and the corresponding branch electromagnetic valve 12 is not closed, go to step B12, and if none of the 5 branches reaches the set threshold, go to step B10;

step B12: the labVIEW control system sends a signal to control the branch electromagnetic valve 12 to close;

step B14: the labVIEW control system detects whether all the partial electromagnetic valves 12 are closed, and if so, the step B16 is executed; otherwise, go to step B10;

step B15: the labVIEW control system judges that the branch electromagnetic valve 12 is closed to fail, sends the branch electromagnetic valve 12 closing failure fault to the mobile phone 21 through the GSM controller 22, and sends a signal to close the water pump 11; delaying for 3s again to send a signal to close all the other sub-electromagnetic valves 12 and the main electromagnetic valve 13, and ending;

step B16: the labVIEW control system sends a signal to control the water pump 11 to be closed;

step B17: the labVIEW control system delays 3s to send a signal to control the closing of the main electromagnetic valve 13;

step B18: labVIEW control system detects that water pump 11 outlet pressure is less than or equal to 1 bar? If yes, the system is switched to close the control flow; if not, go to step B19;

step B19: the labVIEW control system sends the fault that the water pump 11 and the main electromagnetic valve 13 are not closed to the mobile phone 21 through the GSM controller 22, and the operation is finished;

the system shutdown control flow comprises the following steps:

step C1: the labVIEW control system obtains the signal of the current sensor 18 and detects whether the operating current of the water pump 11 is zero? If yes, go to step C2, otherwise go to step C3;

step C2: the labVIEW control system determines that the water pump 11 is turned off; the labVIEW control system sends a system normal signal to the mobile phone 21 through the GSM controller 22, and the process is finished;

step C3: the labVIEW control system judges that the main electromagnetic valve 13 is closed and the water pump 11 is not closed, sends the fault that the water pump 11 is not closed to the mobile phone 21 through the GSM controller 22, and ends;

the system starting control flow comprises the following steps:

step D1: the labVIEW control system obtains the signal of the current sensor 18 and detects whether the operating current of the water pump 11 exceeds a limit value? If yes, go to step D2; otherwise, go to step D3;

step D2: the labVIEW control system sends a signal to control the water pump 11 to be closed, the general electromagnetic valve 13 is judged to be not opened to have a fault, the labVIEW control system sends the general electromagnetic valve 13 to be not opened to have a fault to the mobile phone 21 through the GSM controller 22, and the operation is finished;

step D3: is the labVIEW control system detecting that the operating current of the water pump 11 is zero? If yes, go to step D4, otherwise go to step D5;

step D4: the labVIEW control system sends a signal to control the water pump 11 to be closed, and then sends a signal to control the main electromagnetic valve 13 to be closed; the labVIEW control system judges the failure fault of the water pump 11, and the labVIEW sends the failure fault of the water pump 11 to the mobile phone 21 through the GSM controller and finishes;

step D5: the labVIEW control system sends a signal to control the water pump 11 to be closed; then, a signal is sent to control the main electromagnetic valve 13 to be closed;

the labVIEW control system judges that the water pump 11 is in unstable control fault; and the labVIEW control system sends the water pump 11 control instability fault to the mobile phone 21, and the operation is finished. The unstable control of the water pump 11 causes the output pressure of the water pump 11 to be abnormal and suddenly reduced.

The multi-channel irrigation control flow, the system starting control flow and the system closing control flow which are arranged by the labVIEW control system have the capability of system fault diagnosis, can report a too low water level alarm to the mobile phone 21, can report a fault that the partial electromagnetic valves 12 are closed and fail, can report a fault that the water pump 11 and the main electromagnetic valve 13 are not closed, can report a fault that the water pump 11 is not closed, can report a fault that the main electromagnetic valve 13 is not opened, can report a fault that the water pump 11 is started and fails, can report a fault that the water pump 11 is not controlled stably, can identify whether the current irrigation is finished or not, can identify whether the system has a fault and can identify the fault.

The method for controlling the remote-control intelligent gardening irrigation system with fault detection is characterized in that in the step B1, the labVIEW control system determines the theoretical irrigation quantity of each irrigation area according to the irrigation areas, and the step B of calculating the actual irrigation quantity of each irrigation area according to the theoretical irrigation quantity of each irrigation area and the external environment monitoring data comprises the following steps:

step B03: the labVIEW control system calculates the actual irrigation quantity which is the current actual required irrigation quantity and uses V_{Practice of}；

V_{Practice of}＝V_{Theory of the invention}-V_{Rainfall device}+V_{Ambient temperature}+V _Humidity1。

The control method for the remote control intelligent gardening irrigation system with fault detection is characterized in that in the step B9, after the labVIEW control system controls the corresponding branch electromagnetic valves 12 to be opened, the watering electromagnetic valves 19 of the branches are controlled to be opened and closed in sequence according to the average watering amount, water is supplied to each watering branch according to the average watering amount, and the average watering amount uses V_{Flat plate}Indicating that the average irrigation volume is also monitored by the flow sensor 14;

V_{flat plate}＝V_{Practice of}And M is the number of irrigation branches.

Through the arrangement of the method, the labVIEW control system controls the watering electromagnetic valves 19 to be opened and closed in sequence, namely, the first watering electromagnetic valve 19 is opened firstly to water a first watering position, after the average watering amount is reached, the first watering electromagnetic valve 19 is controlled to be closed, the second watering electromagnetic valve 19 is opened to water a second watering position, and the like.

The control method of the remote-control intelligent gardening irrigation system with fault detection is characterized in that in the step B9, after the labVIEW control system controls the opening of the branch electromagnetic valve 12 of the relevant branch, the labVIEW control system detects the water outlet pressure of the water outlet pipe 32 of the corresponding branch through the corresponding second pressure sensor 34, and determines whether the water outlet pressure is greater than 5 bar? The bar is a pressure unit, if the bar is more than 5bar, all the sub-electromagnetic valves 12 are controlled to be closed, the water pump 11 is closed, the main electromagnetic valve 13 is closed, and the process is finished; otherwise go to step B10.

Through the arrangement of the method, if the water outlet pressure of the branch water outlet pipe 32 is detected to be greater than 5bar, the labVIEW control system controls the corresponding branch electromagnetic valves 12, the water pump 11 and the main electromagnetic valve 13 to be closed, so that the branch water outlet pipe 32 is prevented from being pressed and exploded due to blockage of the branch water outlet pipe 32 or damage of the watering electromagnetic valve 19.

The working principle of the present invention will be described with reference to fig. 1 and fig. 2, wherein the irrigation task of the irrigation area is issued to the GSM controller 22 by the APP stored in the mobile phone 21;

the GSM controller 22 sends a corresponding signal to the first usb data acquisition device 24 according to the received signal of the specific irrigation area requirement;

2. the first usb data acquisition device 24 receives the signals and transmits the signals to the labview control system through a usb data line;

the labview control system automatically identifies the corresponding output port according to the received signal, and controls the corresponding branch relay IR 1-IR 5 through the corresponding output port of the first usb data acquisition device 24, so as to realize the on-off control of the main electromagnetic valve 13, the water pump 11 and the branch electromagnetic valves 12;

4. the flow sensors 14 of all branches are used for monitoring the irrigation quantity of all branches in the irrigation task process, the irrigation quantity of different irrigation areas is collected through the second usb data collection device 25 and sent to the labview control system, the irrigation quantity required by different partitions is set in the labview control system, the real-time irrigation quantity is compared with the set actual irrigation quantity of the system through the labview control system, and after the actual irrigation quantity is reached, an instruction is sent out to control the corresponding sub-electromagnetic valves 12 to be closed through the first usb data collection device 24, so that the irrigation task requirements of different branches are met.

The specific signal control is as follows:

1. the main electromagnetic valve 13, the branch electromagnetic valves 12 and the water pump 11 are powered by a 220V household alternating current power distribution box in a centralized manner, the irrigation area comprises an irrigation 1 area, an irrigation 2 area and an irrigation N area, the irrigation tasks of the irrigation 1 area, the irrigation 2 area and the irrigation N area are sent by an APP arranged in the mobile phone 21, the irrigation 1 area sent by the mobile phone 21, the irrigation tasks of the irrigation 2 area and the irrigation N area correspond to the control ends of the GSM controller 22 and are 1 and 2, 3 and 4, 5 and 6, namely the mobile phone 21 sends the irrigation task of the irrigation 1 area, and the GSM controller 22 receives a remote control signal and then controls the

pins

1 and 2 of the GSM controller 22 to be connected; when the mobile phone sends irrigation task of 2 areas, the GSM controller 22 receives the remote control signal and then controls the connection of

pins

3 and 4 of the GSM controller 22.

Pins

9 and 10 of the GSM controller 22 are 12V, if irrigation is needed in the area 1, after receiving a signal from the mobile phone 21, pins 1 and 2 of the GSM controller 22 are connected, so that

pins

1 and 2 at the left end of the first usb data acquisition device 24 are connected to obtain 12V, and the

pins

1 and 2 at the left end of the driver obtain 12V, which is a request signal for irrigation needed in the area 1;

3. whether the main electromagnetic valve 13, the water pump 11 and the branch electromagnetic valves 12 work, that is, whether the power supply circuit is communicated with 220V alternating current or not is realized by whether 12V driving signals are output by five pairs of pins, namely 1 and 2, 3 and 4, 5 and 6, 7 and 8, 9 and 10, at the right end of the first usb data acquisition device 24, five pairs of pins, namely 1 and 2, 3 and 4, 5 and 6, 7 and 8, 9 and 10, of the driver respectively control the on-off of coils of the branch relay IR 1-IR 5, and normally open switches of the branch relay IR 1-IR 5 respectively control the on-off of the water pump 11, the main electromagnetic valve 13, the branch electromagnetic valve A, the branch electromagnetic valve B and the branch electromagnetic valve N.

The irrigation of any 2 or more irrigation areas is illustrated by taking the simultaneous irrigation of irrigation 1 area and irrigation 2 area as an example. Firstly, opening a main electromagnetic valve 13, closing the electromagnetic valves 1-N in the irrigation area, then starting a water pump 11, opening a branch electromagnetic valve A and a branch electromagnetic valve B after the water pump 11 runs for a set time, and beginning to irrigate an irrigation area 1 and an irrigation area 2. Irrigate 1 district, irrigate 2 balanced valve A in district, balanced valve B are used for balanced 1 district of irrigation, irrigate 2 flows in district, ensure the water conservancy imbalance not to appear, thereby realize water conservancy balance, irrigate 1 district, irrigate 2 flow sensor A in district, flow sensor B is used for monitoring 1 district of irrigation, irrigate 2 irrigation volume in district, the branch solenoid valve 12 that corresponds after single irrigation area watering is ended is closed, irrigate 1 district, irrigate 2 district watering and all end back water pump 11 and total solenoid valve 13 and close.

Finally, it is noted that: the above-mentioned embodiments are only examples of the present invention, and it is a matter of course that those skilled in the art can make modifications and variations to the present invention, and it is considered that the present invention is protected by the modifications and variations if they are within the scope of the claims of the present invention and their equivalents.

Claims

1. A control method of a remote control intelligent gardening irrigation system with fault detection is suitable for the remote control intelligent gardening irrigation system with fault detection; the remote control intelligent gardening irrigation system comprises an irrigation pipeline system (1) and a wireless control system (2);

the irrigation pipeline system (1) comprises a main circuit and at least one branch circuit, wherein a water pump (11) is arranged in the main circuit, and branch electromagnetic valves (12) are arranged in the branch circuits;

the wireless control system (2) comprises a mobile phone (21) and a GSM controller (22) which is in wireless connection with the mobile phone (21);

a main electromagnetic valve (13) is also arranged in the main road, and the water pump (11) is connected with a water inlet pipe (31) through the main electromagnetic valve (13);

flow sensors (14) are arranged in the branches, inlets of the sub-electromagnetic valves (12) are communicated with outlets of the main circuit, outlets of the sub-electromagnetic valves (12) are connected with branch water outlet pipes (32), and the flow sensors (14) are mounted on the branch water outlet pipes (32) and used for collecting flow data;

the wireless control system (2) further comprises a computer (23), the computer (23) is connected with the GSM controller (22) through a first usb data acquisition device (24) to acquire an irrigation instruction sent by the mobile phone (21), and an irrigation area is determined according to the irrigation instruction; the computer (23) is also connected with an external environment monitoring module (26) and the flow sensor (14) through a second usb data acquisition device (25), and the external environment monitoring module (26) is used for detecting external environment monitoring data;

a labVIEW control system is arranged in the computer (23), and the labVIEW control system calculates the actual irrigation quantity according to the theoretical irrigation quantity and the external environment monitoring data; the labVIEW control system sends a control signal to the first usb data acquisition equipment (24) according to actual irrigation volume and flow data, and the first usb data acquisition equipment (24) controls the main electromagnetic valve (13), the water pump (11) and the branch electromagnetic valves (12) to work through corresponding branch relays;

the computer (23) is also connected with a first pressure sensor (16), a liquid level sensor (17) and a current sensor (18) through a second usb data acquisition device (25); the first pressure sensor (16) is arranged at the outlet of the water pump (11) and used for detecting the outlet pressure of the water pump (11); the liquid level sensor (17) is used for detecting the liquid level height of the water source; two detection ends of the current sensor (18) are connected into a power supply loop of the water pump (11) in series and used for detecting a current signal of the water pump (11);

the branch water outlet pipe (32) is further connected with an overflow valve (20), the overflow valve (20) comprises a cylindrical shell (201), a cavity is arranged in the shell (201), a water inlet (202) is formed in one end of the shell (201), the water inlet (202) is connected with the branch water outlet pipe (32), a piston (203) is arranged in the cavity in a sliding mode, the piston (203) is connected with one side, away from the water inlet (202), of the cavity through a spring (204), an overflow hole (201a) is formed in the outer wall of the shell (201), and the piston (203) can slide towards one side, away from the water inlet (202), under the overflow pressure to open the overflow hole (201a) to overflow;

the external environment monitoring module (26) is provided with a rainfall sensor, a temperature sensor and a humidity sensor, the rainfall sensor is used for detecting the rainfall of the external environment, the temperature sensor is used for detecting the temperature of the external environment, and the humidity sensor is used for detecting the atmospheric humidity of the external environment;

balance valves (15) are arranged in the branches, and the balance valves (15) are arranged between the branch electromagnetic valves (12) and the flow sensor (14);

the branch water outlet pipe (32) is also connected with at least one watering branch, the watering branch is provided with a watering solenoid valve (19), the inlet of the watering solenoid valve (19) is connected with the branch water outlet pipe (32), and the outlet of the watering solenoid valve (19) is connected with a watering pipe (33); the computer (23) also sends a shunt control signal to the first usb data acquisition equipment (24), and the first usb data acquisition equipment (24) controls the on-off of the watering electromagnetic valve (19) through a corresponding shunt relay;

the branch water outlet pipe (32) is also provided with a second pressure sensor (34), the second pressure sensor (34) is used for detecting the pressure of the branch water outlet pipe (32), and the computer (23) is connected with the second pressure sensor (34) through a second usb data acquisition device (25);

the method is characterized in that: the labVIEW control system is provided with a multi-channel irrigation control flow, a system starting control flow and a system closing control flow;

the labVIEW control system also sends the fault information to the mobile phone (21) through the GSM controller (22);

the multi-channel irrigation control process comprises the following steps;

step B1: the labVIEW control system acquires a branch or a plurality of branches of irrigation instructions sent by the mobile phone (21) through the GSM controller (22);

the labVIEW control system determines irrigation areas according to the irrigation instructions, each branch is used for watering the corresponding irrigation area, the theoretical irrigation quantity of each irrigation area is determined according to the irrigation areas, and the actual irrigation quantity of each irrigation area is calculated according to the theoretical irrigation quantity of each irrigation area and external environment monitoring data;

step B2: the labVIEW control system acquires a signal of the liquid level sensor (17), analyzes whether the liquid level is normal or not, if not, turns to the step B3, otherwise turns to the step B4;

step B3: the labVIEW control system reports the alarm of the low water level to the mobile phone (21) through the GSM controller (22), and the process is finished;

step B4: the labVIEW control system sends a signal to control a main electromagnetic valve (13) to be opened;

step B5: the labVIEW control system delays for 5s and sends a signal to control the water pump (11) to start;

step B6: the labVIEW control system delays for 5s to acquire a signal of the first pressure sensor (16), judges whether the outlet pressure of the water pump (11) is 4.5-5bar after the water pump (11) is started for 5s, and if so, turns to step B7; otherwise, starting the control flow by the system;

step B7: the labVIEW control system acquires signals of the flow sensor (14) and detects whether the flow of all branches is less than 0.1m³If yes, go to step B9; otherwise, go to step B8;

step B8: the labVIEW control system reports a closing failure fault of the corresponding partial electromagnetic valve (12) to the mobile phone (21), closes the water pump (11), delays for 3s to close the main electromagnetic valve (13), and the operation is finished;

step B9: the labVIEW control system sends a signal to control all branch electromagnetic valves (12) of branches related to the irrigation command to be opened;

step B10: the labVIEW control system respectively collects the irrigation quantity of each branch through a corresponding flow sensor (14);

step B11: the labVIEW control system detects each branch in sequence, judges whether the irrigation quantity of each branch reaches a corresponding set threshold value, and the corresponding branch electromagnetic valve (12) is not closed, wherein the set threshold value is the actual irrigation quantity; if yes, go to step B12; otherwise, go to step B10;

step B12: the labVIEW control system sends a signal to control the branch electromagnetic valve (12) to be closed;

step B13: the labVIEW control system detects whether the branch flow is less than 0.1m³If yes, turning to the step B14, otherwise, turning to the step B15;

step B14: the labVIEW control system detects whether all the partial electromagnetic valves (12) are closed, and if so, the step B16 is executed; otherwise, go to step B10;

step B15: the labVIEW control system judges the closing failure fault of the branch electromagnetic valve (12), sends the closing failure fault of the branch electromagnetic valve (12) to the mobile phone (21) through the GSM controller (22), and sends a signal to close the water pump (11); delaying 3s again to send a signal to close all the other branch electromagnetic valves (12) and the main electromagnetic valve (13), and ending;

step B16: the labVIEW control system sends a signal to control the water pump (11) to be closed;

step B17: the labVIEW control system delays for 3s and sends a signal to control a main electromagnetic valve (13) to be closed;

step B18: the labVIEW control system detects that the outlet pressure of the water pump (11) is less than or equal to 1bar, and if yes, the system closes the control flow; if not, go to step B19;

step B19: the labVIEW control system sends a fault that the water pump (11) and the main electromagnetic valve (13) are not closed to the mobile phone (21) through the GSM controller (22), and the operation is finished;

the system shutdown control flow comprises the following steps:

step C1: the labVIEW control system acquires a signal of the current sensor (18), detects whether the working current of the water pump (11) is zero, if so, goes to step C2, otherwise goes to step C3;

step C2: the labVIEW control system judges that the water pump (11) is closed; the labVIEW control system sends a system normal signal to the mobile phone (21) through the GSM controller (22), and the operation is finished;

step C3: the labVIEW control system judges that the main electromagnetic valve (13) is closed and the water pump (11) is not closed, and sends a fault that the water pump (11) is not closed to the mobile phone (21) through the GSM controller (22) and ends;

the system starting control flow comprises the following steps:

step D1: the labVIEW control system acquires a signal of the current sensor (18), detects whether the working current of the water pump (11) exceeds a limit value, and if so, goes to step D2; otherwise, go to step D3;

step D2: the labVIEW control system sends a signal to control the water pump (11) to be closed, the general electromagnetic valve (13) is judged to be not opened, the labVIEW control system sends the general electromagnetic valve (13) to the mobile phone (21) through the GSM controller (22) and the operation is finished;

step D3: the labVIEW control system detects whether the working current of the water pump (11) is zero, if so, the step D4 is executed, otherwise, the step D5 is executed;

step D4: the labVIEW control system sends a signal to control the water pump (11) to be closed, and then sends a signal to control the main electromagnetic valve (13) to be closed; the labVIEW control system judges the starting failure fault of the water pump (11), and the labVIEW sends the starting failure fault of the water pump (11) to the mobile phone (21) through the GSM controller and ends;

step D5: the labVIEW control system sends a signal to control the water pump (11) to be closed; then, a signal is sent to control the closing of a main electromagnetic valve (13);

the labVIEW control system judges that the water pump (11) is in unstable control fault; the labVIEW control system sends an unstable control fault of the water pump (11) to the mobile phone (21), and the operation is finished;

the multi-channel irrigation control flow, the system starting control flow and the system closing control flow which are set by the labVIEW control system have the capability of system fault diagnosis, and can report the alarm of too low water level, the failure fault of closing of the branch electromagnetic valve, the failure fault of not closing the water pump, the failure fault of not opening the main electromagnetic valve, the failure fault of starting the water pump and the fault of unstable control of the water pump to a mobile phone;

in step B1, the labVIEW control system determines the theoretical irrigation volume of each irrigation area according to the irrigation area, and the calculating the actual irrigation volume of each irrigation area according to the theoretical irrigation volume of each irrigation area and the external environment monitoring data includes:

Step B02: labVIEW control system according to outsideCalculation of world environment monitoring data V_{Rainfall device}，V_{Rainfall device}The unit m is the rain irrigation quantity converted from actual rainfall³；

V_{Practice of}＝V_{Theory of the invention}-V_{Rainfall device}+V_{Ambient temperature}+V_Humidity(1)；

Every time the air temperature rises or decreases by one degree, V_{Ambient temperature}Increase or decrease of irrigation volume V_{Theory of the invention}One hundredth of; v for every rise or fall in humidity_HumidityIncrease or decrease of irrigation volume V_{Theory of the invention}One hundredth of; v_{Rainfall device}And calculating by adopting the product of the detection value of the rainfall sensor and the area of the irrigation area.

2. The method as claimed in claim 1, wherein the step B9, the labVIEW control system opens the corresponding branch solenoid valve (12), and then opens and closes the branch solenoid valve (19) according to the average irrigation volume, and supplies water to each branch according to the average irrigation volume, and the average irrigation volume is V_{Flat plate}It is shown that,

V_{flat plate}＝V_{Practice of}And M is the number of irrigation branches.

3. The method for controlling a remote-controlled intelligent horticultural irrigation system with failure detection as claimed in claim 1, wherein in step B9, after the labVIEW control system controls the opening of the branch solenoid valve (12) of the relevant branch, the outlet water pressure of the outlet pipe (32) of the corresponding branch is detected by the corresponding second pressure sensor (34), and it is determined whether the outlet water pressure is greater than 5bar, where bar is a unit of pressure, and if greater than 5bar, all the branch solenoid valves (12) are controlled to be closed, the water pump (11) is closed, the general solenoid valve (13) is closed, and the method is ended; otherwise go to step B10.