CN112544415A - Irrigation control system and control method thereof - Google Patents
Irrigation control system and control method thereof Download PDFInfo
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- CN112544415A CN112544415A CN202011388282.9A CN202011388282A CN112544415A CN 112544415 A CN112544415 A CN 112544415A CN 202011388282 A CN202011388282 A CN 202011388282A CN 112544415 A CN112544415 A CN 112544415A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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Abstract
An irrigation control system and a control method of the control system belong to the technical field of agricultural irrigation. The irrigation control system comprises a first irrigation device, a first relay and an electromagnetic valve, wherein the first irrigation device comprises a first irrigation controller and a first irrigation decoder, the first irrigation decoder is electrically connected with the electromagnetic valve, the first irrigation controller comprises a first micro-control unit, a power circuit and a low-voltage direct-current carrier modulation circuit, the first irrigation decoder comprises a low-voltage direct-current decoding circuit, the first micro-control unit is electrically connected with the power circuit and the low-voltage direct-current carrier modulation circuit respectively, and the first relay is electrically connected with the low-voltage direct-current carrier modulation circuit and the low-voltage direct-current decoding circuit respectively. This application is compared in wireless irrigation system, the great reinforcing of the interference killing feature of this application, and stability is strong, and compares in alternating current power control system, and the electric current of this application output is low voltage direct current, and factor of safety strengthens greatly.
Description
Technical Field
The application relates to the technical field of agricultural irrigation, in particular to an irrigation control system and a control method of the control system.
Background
With the development of society and the progress of science and technology, plant irrigation systems in modern agriculture and the like are mostly divided into wireless control systems and wired control systems, wherein the wired control systems are divided into direct wired control and power carrier wired control.
However, the wireless control system in the prior art has poor stability and is directly controlled by a wire, more than one electromagnetic valve is needed during construction, and the control of a plurality of electromagnetic valves greatly increases the difficulty of construction engineering, so that the line voltage is greatly attenuated, and the control distance is short; although the transmission distance of the power carrier wired control is long, and a plurality of electromagnetic valves can be controlled only by different codes, the adopted technology is an alternating-current high-voltage carrier, and the technology of the alternating-current high-voltage carrier has potential safety hazards.
Disclosure of Invention
In view of this, the embodiment of the present application provides at least an irrigation control system and a control method of the control system, and a low-voltage dc carrier modulation circuit and a low-voltage dc decoding circuit are installed in a carrier irrigation device, so as to convert high-voltage ac into low-voltage dc to operate the irrigation system.
The application mainly comprises the following aspects:
in a first aspect, an embodiment of the present application provides an irrigation control system, including a first irrigation device, a first relay, and a solenoid valve, where the first irrigation device includes a first irrigation controller and a first irrigation decoder, the first irrigation decoder is electrically connected to the solenoid valve, the first irrigation controller includes a first micro-control unit, a power supply circuit, and a low-voltage dc carrier modulation circuit, the first irrigation decoder includes a low-voltage dc decoding circuit, the first micro-control unit is electrically connected to the power supply circuit and the low-voltage dc carrier modulation circuit, and the first relay is electrically connected to the low-voltage dc carrier modulation circuit and the low-voltage dc decoding circuit, respectively;
the power supply circuit is used for converting the obtained alternating current of the alternating current power supply into voltage-stabilizing direct current;
the first micro-control unit is used for converting the stabilized direct current into low-voltage direct current so that the converted low-voltage direct current flows to a low-voltage direct current carrier modulation circuit;
the low-voltage direct current carrier modulation circuit is used for carrying out carrier modulation on the low-voltage direct current to obtain low-voltage direct current carrier current, so that the modulated low-voltage direct current flows to the low-voltage direct current decoding circuit through the first relay;
the low-voltage direct current decoding circuit is used for decoding the low-voltage direct current carrier current, so that the decoded low-voltage direct current carrier current controls the electromagnetic valve to be opened, and irrigation operation is performed through the first irrigation device.
In one possible embodiment, the irrigation control system further comprises: the second irrigation device comprises a second irrigation controller and a second irrigation decoder, the second irrigation controller and the first irrigation controller are both in communication connection with the central control platform, the second irrigation controller is electrically connected with the first relay, the second irrigation controller and the first irrigation controller cannot be simultaneously connected with the first relay, the second irrigation decoder is electrically connected with the first irrigation decoder, the second irrigation decoder is electrically connected with the solenoid valve, and the second irrigation decoder and the first irrigation decoder cannot be simultaneously connected with the solenoid valve;
the second irrigation device is used for conventionally decoding the current flowing into the second irrigation decoder under the normal working state, so that the decoded current controls the opening of the electromagnetic valve to realize irrigation operation through the second irrigation device;
when the irrigation device is in an abnormal or fault state, the second irrigation device is used for sending an abnormal or fault instruction to the central control platform, so that the central control platform sends a control instruction for starting the first irrigation device to the first micro-control unit in the first irrigation controller;
the first micro-control unit: and the control end of the first relay is controlled to be switched to be connected with the first irrigation controller by being connected with the second irrigation controller, and the electromagnetic valve is controlled to be opened so as to realize irrigation operation through the first irrigation device.
In a possible implementation manner, the first irrigation controller further comprises a communication circuit and a switching control circuit, the communication circuit and the switching control circuit are respectively and electrically connected with the first micro-control unit, and the switching control circuit is electrically connected with the first relay;
the communication circuit is used for receiving an abnormal or fault instruction sent by the second irrigation device to the central control platform, a control instruction sent by the central control platform to the first micro-control unit for starting the first irrigation device and a switching instruction sent by the switching control circuit to the first relay;
and the switching control circuit is used for sending a switching instruction to the first relay according to the control instruction started by the first irrigation device and controlling the first relay to be connected with the first irrigation controller through being connected with the second irrigation controller and switching.
In one possible implementation, the first irrigation decoder further comprises: the decoding switching circuit is respectively and electrically connected with the first relay and the second micro-control unit, the second micro-control unit is electrically connected with the low-voltage direct-current decoding circuit, and the second micro-control unit and the second irrigation decoder are both electrically connected with the second relay;
the decoding switching circuit is used for forwarding the processed abnormal or fault instruction to the second micro-control unit so that the second micro-control unit can control the second relay;
and the second micro-control unit is used for receiving the abnormal or fault instruction forwarded by the decoder and analyzing and processing the abnormal or fault instruction so as to switch the control end of the second relay from being connected with the second irrigation decoder to being connected with the first irrigation decoder.
In one possible implementation, the first irrigation decoder further comprises: the electromagnetic valve switching circuit and the electromagnetic valve driving control circuit are both electrically connected with the second micro-control unit, and the electromagnetic valve switching circuit and the electromagnetic valve are both electrically connected with the electromagnetic valve driving control circuit;
the second micro-control unit is further used for monitoring and receiving the actual voltage of the second irrigation device, and analyzing the actual voltage of the second irrigation device, the standard voltage of the first irrigation device and the standard voltage of the second irrigation device;
the electromagnetic valve switching circuit is used for controlling the second micro-control unit to start the electromagnetic valve driving control circuit and controlling the electromagnetic valve driving control circuit to start when the actual voltage of the second irrigation device is smaller than the standard voltage of the second irrigation device and larger than the standard voltage of the first irrigation device in the analysis result of the second micro-control unit;
and the electromagnetic valve driving control circuit is used for driving the electromagnetic valve to be switched from the second irrigation decoder to the first irrigation decoder.
In one possible implementation, the model number of the first micro control unit is STM32F407VET6, and the model number of the second micro control unit is STM32F103RET 6.
In one possible embodiment, the irrigation control system further comprises a relay electrically connected to the first relay.
In a possible implementation manner, the communication circuit is specifically a 3G/4G/5G module circuit and a WIFI network circuit.
In a possible embodiment, the electrical connections between the second irrigation controller and the first relay are both two-wire connections, the electrical connections between the first relay and the first irrigation decoder and the repeater are two-wire connections, the electrical connections between the first irrigation decoder and the second irrigation decoder are two-wire connections, and the two-wire connections are carrier line electrical connections using two-wire direct current.
In a second aspect, embodiments of the present application further provide an irrigation control method applied to the time-delay switch device according to any one of the first aspects, wherein the power supply system includes the irrigation control system according to any one of the time-delay switch devices according to the first aspects, and the control method includes:
judging whether to start the first irrigation device to operate or not according to the operation condition of the second irrigation device;
if the second irrigation device stops operating, determining to start the first irrigation device to operate;
and controlling the electromagnetic valve to be opened according to the fact that the first irrigation controller in the first irrigation device completes the switching of the electromagnetic valve from the connection with the second irrigation decoder to the connection with the first irrigation decoder, so that irrigation operation is performed through the first irrigation device.
In the embodiment of the application, through installing low pressure direct current carrier modulation circuit and low pressure direct current decoding circuit in carrier irrigation device, turn into the direct current of low pressure with highly compressed alternating current and carry out the operation to irrigation system, compare in wireless irrigation system, the great reinforcing of the interference killing feature of this application, stability is strong, and compares in alternating current power control system, and the electric current of this application output is low voltage direct current, and factor of safety strengthens greatly.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic diagram illustrating an irrigation control system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating another irrigation control system provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating another irrigation control system provided in accordance with an embodiment of the present application;
fig. 4 shows a flow chart of an irrigation control method provided by an embodiment of the present application.
Description of the main element symbols:
in the figure: 10-an irrigation control system; 100-a first irrigation device; 110-a first irrigation controller; 111-a power supply circuit; 112-a first micro-control unit; 113-low voltage dc carrier modulation circuit; 114-a communication circuit; 115-a switching control circuit; 120-a first irrigation decoder; 121-low voltage dc decoding circuit; 122-a second micro-control unit; 123-a decoding switching circuit; 124-a second relay; 125-solenoid valve switching circuit; 126-solenoid valve drive control circuit; 200-a first relay; 300-a solenoid valve; 400-a second irrigation device; 410-a second irrigation decoder; 420-second irrigation controller.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and that steps without logical context may be performed in reverse order or concurrently. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
To enable those skilled in the art to utilize the present disclosure, the following embodiments are presented in conjunction with a specific application scenario, "irrigation control system," which is within the spirit and scope of the present application and the general principles defined herein may be applied to other embodiments and application scenarios by those skilled in the art.
The system and the method provided by the embodiment of the application can be applied to any scene needing delayed power supply, the embodiment of the application does not limit the specific application scene, and any scheme using the irrigation control system and the control method of the control system provided by the embodiment of the application is within the protection scope of the application.
It is worth noting that researches show that before the application is provided, a wireless control system in the prior art is poor in stability and is directly controlled in a wired mode, when construction is carried out, more than one electromagnetic valve is needed, the difficulty of construction engineering is greatly increased due to the control of a plurality of electromagnetic valves, the line voltage is greatly attenuated, and the control distance is short; although the transmission distance of the power carrier wired control is long, and a plurality of electromagnetic valves can be controlled only by different codes, the adopted technology is an alternating-current high-voltage carrier, and the technology of the alternating-current high-voltage carrier has potential safety hazards.
In order to solve the problems, the embodiment of the application provides an irrigation control system and a control method of the control system, a low-voltage direct-current carrier modulation circuit and a low-voltage direct-current decoding circuit are installed in a carrier irrigation device, high-voltage alternating current is converted into low-voltage direct current to operate the irrigation system, and compared with a wireless irrigation system, the anti-interference capacity is greatly enhanced, the stability is high, compared with an alternating-current power control system, the current output by the wireless irrigation system is low-voltage direct current, and the safety coefficient is greatly enhanced.
For the convenience of understanding of the present application, the technical solutions provided in the present application will be described in detail below with reference to specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an irrigation control system according to an embodiment of the present disclosure. As shown in fig. 1, an irrigation control system 10 according to an embodiment of the present application includes a first irrigation device 100, a first relay 200, and a solenoid valve 300, where the first irrigation device includes a first irrigation controller 110 and a first irrigation decoder 120, the first irrigation decoder 120 is electrically connected to the solenoid valve 300, the first irrigation controller 110 includes a first micro-control unit 112, a power circuit 111, and a low-voltage dc carrier modulation circuit 113, the first irrigation decoder 120 includes a low-voltage dc decoding circuit 121, the first micro-control unit 112 is electrically connected to the power circuit 111 and the low-voltage dc carrier modulation circuit 113, and the first relay 200 is electrically connected to the low-voltage dc carrier modulation circuit 113 and the low-voltage dc carrier modulation circuit 121.
The power circuit 111 is configured to convert the obtained ac current of the ac power source into a regulated dc current.
In the embodiment, the power circuit 111 is used to convert a commercial high-voltage ac current into a regulated direct current.
The first micro control unit 112 is configured to convert the regulated dc into a low-voltage dc, so that the converted low-voltage dc is sent to the low-voltage dc carrier modulation circuit 113.
In a specific embodiment, the first micro control unit 112 is specifically a first MCU, wherein the model of the first micro control unit 112 is STM32F407VET 6.
The low-voltage dc carrier modulation circuit 113 is configured to perform carrier modulation on the low-voltage dc to obtain a low-voltage dc carrier current, so that the modulated low-voltage dc flows to the low-voltage dc decoding circuit 121 through the first relay 200.
In a specific embodiment, the low-voltage dc flowing into the power circuit 111 and passing through the first micro-control unit 112 flows into the low-voltage dc carrier modulation circuit 113, so that the low-voltage dc is subjected to carrier processing at a certain low carrier frequency to obtain a low-voltage dc carrier current, and the low-voltage dc carrier current flowing into the low-voltage dc decoding circuit 121 through the first relay 200 is subjected to decoding processing.
The low-voltage dc decoding circuit 121 is configured to decode the low-voltage dc carrier current, so that the decoded low-voltage dc carrier current controls the electromagnetic valve 300 to open, so as to implement irrigation operation through the first irrigation device.
In a specific embodiment, the low-voltage dc decoding circuit 121 decodes the low-voltage dc carrier current that flows in, and the decoded low-voltage dc carrier current can adapt to current flow direction signals of various frequencies in the circuit, so that the low-voltage dc carrier current is more stable.
Optionally, the irrigation control system 10 further comprises a relay, and the relay is electrically connected to the first relay 200.
In a specific embodiment, the repeater can increase the transmission distance of the irrigation system provided by the present application, for example, the common relay transmission distance in the market can reach 3 km, and the increase of the repeater can increase the multiple of the transmission distance, and the repeater adopts a communication mode of multiple masters and multiple slaves, and supports a non-polar connection mode.
The relay is a network device that expands the distance of network transmission by retransmitting or forwarding data, and regenerates and restores data.
In this step, the non-polar connection mode may specifically be: star connection, tree connection and bus connection, and the above connection mode can include 256 connection nodes at most, thereby greatly reducing power consumption and enhancing the real-time performance of the control solenoid valve 300.
The embodiment of the application provides an irrigation control system 10 and control system's control method, compare with irrigation control system 10 among the prior art, this application is through installing low pressure direct current carrier modulation circuit 113 and low pressure direct current decoding circuit 121 in carrier irrigation device, convert the alternating current of high pressure into the direct current of low pressure and come to carry out the operation to irrigation system, compare in wireless irrigation system, the great reinforcing of the interference killing feature of this application, stability is strong, and compare in alternating current power control system, the electric current of this application output is low voltage direct current, factor of safety strengthens greatly.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another irrigation control system 10 according to an embodiment of the present application. As shown in fig. 2, the present embodiment provides an irrigation control system 10, which includes a first irrigation device 100, a first relay 200, and a solenoid valve 300, where the first irrigation device includes the first irrigation device 100 and a first irrigation decoder 120, the first irrigation decoder 120 is electrically connected to the solenoid valve 300, the first irrigation controller 110 includes a first micro-control unit 112, a power circuit 111, and a low-voltage dc carrier modulation circuit 113, the first irrigation decoder 120 includes a low-voltage dc decoding circuit 121, the first micro-control unit 112 is electrically connected to the power circuit 111 and the low-voltage dc carrier modulation circuit 113, respectively, and the first relay 200 is electrically connected to the low-voltage dc carrier modulation circuit 113 and the low-voltage dc carrier modulation circuit 121, respectively.
The power circuit 111 is configured to convert the obtained ac current of the ac power source into a regulated dc current.
The first micro control unit 112 is configured to convert the regulated dc into a low-voltage dc, so that the converted low-voltage dc is sent to the low-voltage dc carrier modulation circuit 113.
The low-voltage dc carrier modulation circuit 113 is configured to perform carrier modulation on the low-voltage dc to obtain a low-voltage dc carrier current, so that the modulated low-voltage dc flows to the low-voltage dc decoding circuit 121 through the first relay 200.
The low-voltage dc decoding circuit 121 is configured to decode the low-voltage dc carrier current, so that the decoded low-voltage dc carrier current controls the electromagnetic valve 300 to open, so as to implement irrigation operation through the first irrigation device.
The irrigation control system 10 further comprises: a second irrigation device 400, said second irrigation device 400 comprising a second irrigation controller 420 and a second irrigation decoder 410, said second irrigation controller 420 and said first irrigation device 100 being communicatively connected to a central control platform, said second irrigation controller 420 being electrically connected to said first relay 200, and said second irrigation controller 420 and said first irrigation device 100 being not simultaneously connectable to said first relay 200, said second irrigation decoder 410 being electrically connected to said first irrigation decoder 120, said second irrigation decoder 410 being electrically connected to said solenoid valve 300, and said second irrigation decoder 410 and said first irrigation decoder 120 being not simultaneously connectable to said solenoid valve 300.
In a specific embodiment, when the second irrigation device 400 and the first irrigation device act on the electromagnetic valve 300 at the same time to perform irrigation, the second irrigation controller 420 in the second irrigation device 400 outputs a low-voltage dc circuit through the first relay 200, and decodes the low-voltage dc circuit via the second irrigation decoder 410, so that the decoded low-voltage dc carrier current controls the electromagnetic valve 300 to open, so as to implement irrigation through the second irrigation device 400, the second irrigation device 400 performs irrigation for a specific type of irrigation device, and the second irrigation device cannot set currents of various frequencies through the carrier circuit, so as to output a low-voltage dc current more stably, thereby controlling stable operation of the electromagnetic valve 300.
The current value of the low-voltage direct current can be up to 20A.
The second irrigation device 400 is a rain and bird irrigation device by default, the type of the second irrigation device 400 includes, but is not limited to, a rain and bird irrigation device, and the specific type can be specifically selected according to the operation and the applicable environment.
The second irrigation device 400 is configured to, in a normal operation state, conventionally decode the current flowing into the second irrigation decoder 410, so that the decoded current controls the electromagnetic valve 300 to open, so as to implement irrigation operation through the second irrigation device 400.
In a specific embodiment, when the irrigation control system 10 is in a normal operation state, the first relay 200 is electrically connected to the second irrigation controller 420 in the second irrigation device 400, and the current flowing into the second irrigation controller 400 is conventionally decoded by the second irrigation decoder 410, and the opening of the electromagnetic valve 300 is controlled by the decoded current, so that the second irrigation device 400 performs irrigation.
When in an abnormal or fault state, the second irrigation device 400 is used to send an abnormal or fault instruction to the central control platform, so that the central control platform sends a control instruction for starting the first irrigation device to the first micro-control unit 112 in the first irrigation device 100.
In a specific embodiment, when the second irrigation device 400 is in an abnormal or fault state, the second irrigation controller 420 in the second irrigation device 400 sends an abnormal or fault instruction to the central control platform, and at the same time, the second irrigation device 400 stops irrigation, and the central control platform sends a control instruction for starting to the first irrigation device to control the first irrigation device to start.
The first micro control unit 112: and is further configured to receive the control instruction sent by the central control platform, control the control end of the first relay 200 to be connected to the first irrigation device 100 by being connected to the second irrigation controller 420, and control the electromagnetic valve 300 to be opened, so as to implement irrigation operation through the first irrigation device.
In a specific embodiment, after receiving the control command sent by the central control platform, the first micro-control unit 112 controls the first relay 200 to switch from being connected to the second irrigation controller 420 to being connected to the first irrigation device 100 to turn on the first irrigation device 100, so that the irrigation control system 10 provided by the present application is switched from the second irrigation device 400 to the first irrigation device to control the electromagnetic valve 300 to perform irrigation operation.
Wherein the relay, when switched from being connected to the second irrigation controller 420 to being connected to the first irrigation device 100, delays switching on the first irrigation decoder 120 by 200MS to 400MS for reducing interference from the second irrigation device 400. The first irrigation device 100 determines whether the first just-love decoders are switched, and the first just-love decoders can be frequently switched for several times, and can also be switched by itself according to the voltage detection function of the first irrigation device 100; the first irrigation device 100 may perform irrigation if both are switched and on-net.
The embodiment of the application provides an irrigation control system 10 and control system's control method, compare with irrigation control system 10 among the prior art, this application is through installing low pressure direct current carrier modulation circuit 113 and low pressure direct current decoding circuit 121 in carrier irrigation device, convert the alternating current of high pressure into the direct current of low pressure and come to carry out the operation to irrigation system, compare in wireless irrigation system, the great reinforcing of the interference killing feature of this application, stability is strong, and compare in alternating current power control system, the electric current of this application output is low voltage direct current, factor of safety strengthens greatly.
Fig. 3 is a schematic structural diagram of another irrigation control system 10 provided in the embodiments of the present application, as shown in fig. 3. As shown in fig. 3, the present embodiment provides an irrigation control system 10, which includes a first irrigation device, a first relay 200 and a solenoid valve 300, where the first irrigation device includes a first irrigation device 100 and a first irrigation decoder 120, the first irrigation decoder 120 is electrically connected to the solenoid valve 300, the first irrigation controller 110 includes a first micro-control unit 112, a power circuit 111 and a low-voltage dc carrier modulation circuit 113, the first irrigation decoder 120 includes a low-voltage dc decoding circuit 121, the first micro-control unit 112 is electrically connected to the power circuit 111 and the low-voltage dc carrier modulation circuit 113, respectively, and the first relay 200 is electrically connected to the low-voltage dc carrier modulation circuit 113 and the low-voltage dc decoding circuit 121, respectively.
The power circuit 111 is configured to convert the obtained ac current of the ac power source into a regulated dc current.
The first micro control unit 112 is configured to convert the regulated dc into a low-voltage dc, so that the converted low-voltage dc is sent to the low-voltage dc carrier modulation circuit 113.
The low-voltage dc carrier modulation circuit 113 is configured to perform carrier modulation on the low-voltage dc to obtain a low-voltage dc carrier current, so that the modulated low-voltage dc flows to the low-voltage dc decoding circuit 121 through the first relay 200.
The low-voltage dc decoding circuit 121 is configured to decode the low-voltage dc carrier current, so that the decoded low-voltage dc carrier current controls the electromagnetic valve 300 to open, so as to implement irrigation operation through the first irrigation device.
The irrigation control system 10 further comprises: a second irrigation device 400, said second irrigation device 400 comprising a second irrigation controller 420 and a second irrigation decoder 410, said second irrigation controller 420 and said first irrigation device 100 being communicatively connected to a central control platform, said second irrigation controller 420 being electrically connected to said first relay 200, and said second irrigation controller 420 and said first irrigation device 100 being not simultaneously connectable to said first relay 200, said second irrigation decoder 410 being electrically connected to said first irrigation decoder 120, said second irrigation decoder 410 being electrically connected to said solenoid valve 300, and said second irrigation decoder 410 and said first irrigation decoder 120 being not simultaneously connectable to said solenoid valve 300.
The second irrigation device 400 is configured to, in a normal operation state, conventionally decode the current flowing into the second irrigation decoder 410, so that the decoded current controls the electromagnetic valve 300 to open, so as to implement irrigation operation through the second irrigation device 400.
When in an abnormal or fault state, the second irrigation device 400 is used to send an abnormal or fault instruction to the central control platform, so that the central control platform sends a control instruction for starting the first irrigation device to the first micro-control unit 112 in the first irrigation device 100.
The first micro control unit 112: and is further configured to receive the control instruction sent by the central control platform, control the control end of the first relay 200 to be connected to the first irrigation device 100 by being connected to the second irrigation controller 420, and control the electromagnetic valve 300 to be opened, so as to implement irrigation operation through the first irrigation device.
The first irrigation device 100 further comprises a communication circuit 114 and a switching control circuit 115, the communication circuit 114 and the switching control circuit 115 are respectively electrically connected with the first micro-control unit 112, and the switching control circuit 115 is electrically connected with the first relay 200.
The communication circuit 114 is configured to receive an abnormal or fault instruction sent by the second irrigation device 400 to the central control platform, a control instruction sent by the central control platform to the first micro-control unit 112 to start the first irrigation device, and a switching instruction sent by the switching control circuit 115 to the first relay 200.
In a specific embodiment, the central control platform can be simultaneously connected with a plurality of irrigation control systems 10 composed of the first irrigation device, the first relay 200, the electromagnetic valve 300 and the second irrigation device 400 in a communication manner, so that the irrigation control systems 10 provided by the present application can be assembled and connected in a centralized communication manner, and the installation manner is very simple and convenient.
The communication circuit 114 is specifically a 3G/4G/5G module circuit and a WIFI network circuit.
The switching control circuit 115 is configured to send a switching instruction to the first relay 200 according to a control instruction for starting the first irrigation device, and control the first relay 200 to be connected to the first irrigation device 100 by being connected to the second irrigation controller 420.
In a particular embodiment, the switching control circuit 115 is a control circuit acting on the first relay 200, in particular for switching the first controller from being connected to the second irrigation controller 420 to being connected to the first irrigation device 100.
The first irrigation decoder 120 further comprises: the decoding switching circuit 123 is electrically connected with the first relay 200 and the second micro-control unit 122 respectively, the second micro-control unit 122 is electrically connected with the low-voltage direct current decoding circuit 121, and the second micro-control unit 122 and the second irrigation decoder 410 are both electrically connected with the second relay 124.
Wherein the model of the second micro-control unit 122 is STM32F103RET 6.
The decoding switching circuit 123 is configured to forward the processed abnormal or fault instruction to the second micro control unit 122, so that the second micro control unit 122 controls the second relay 124.
In a specific embodiment, the decoding switching circuit 123 is a control circuit acting on the second relay 124, and is specifically configured to switch the second controller from being connected to the second irrigation decoder 410 to being connected to the first irrigation decoder 120.
The second micro-control unit 122 is configured to receive the abnormal or fault instruction forwarded by the decoder, and analyze and process the abnormal or fault instruction, so that the control end of the second relay 124 is switched from being connected to the second irrigation decoder 410 to being connected to the first irrigation decoder 120.
The second micro-control unit 122 is further configured to monitor and receive the actual voltage of the second irrigation device 400, and analyze the actual voltage of the second irrigation device 400, the standard voltage of the first irrigation device, and the standard voltage of the second irrigation device 400.
In a specific embodiment, the second micro-control unit 122 compares the actual voltage of the second irrigation device 400 with the standard voltage of the first irrigation device by monitoring the actual voltage, and the standard voltage of the second irrigation device 400, and determines whether to disconnect the second relay 124 from the second irrigation decoder 410 according to the comparison result.
The second micro control unit 122 may be specifically a second MCU, but is not limited to the second MCU.
The first irrigation decoder 120 further comprises: the solenoid valve switching circuit 125 and the solenoid valve driving control circuit 126 are electrically connected to the second micro-control unit 122, and the solenoid valve switching circuit 125 and the solenoid valve 300 are electrically connected to the solenoid valve driving control circuit 126.
The solenoid valve switching circuit 125 is configured to, when the actual voltage of the second irrigation device 400 is smaller than the standard voltage of the second irrigation device 400 and larger than the standard voltage of the first irrigation device in the analysis result of the second micro-control unit 122, control the second micro-control unit 122 to start the solenoid valve driving control circuit 126, and control the solenoid valve driving control circuit 126 to start.
In a specific embodiment, when the actual voltage of the second irrigation device 400 is smaller than the standard voltage of the second irrigation device 400 and larger than the standard voltage of the first irrigation device in the analysis result of the second micro-control unit 122, it indicates that the second irrigation device 400 has a fault or is abnormal, at this time, the second micro-control unit 122 controls the second relay 124 to disconnect the second irrigation decoder 410, so that the low-voltage direct current flows into the solenoid valve switching circuit 125 only through the first irrigation decoder 120, so as to start the solenoid valve driving control circuit 126.
The solenoid valve driving control circuit 126 is used for driving the solenoid valve 300 to be switched to the first irrigation decoder 120 by the second irrigation decoder 410.
Optionally, the electrical connections between the second irrigation controller 420 and the first irrigation device 100 and the first relay 200 are two-wire connections, the electrical connections between the first relay 200 and the first irrigation decoder 120 and the relay are two-wire connections, the electrical connections between the first irrigation decoder 120 and the second irrigation decoder 410 are two-wire connections, and the two-wire connections are carrier wires using two-wire direct current.
In a specific embodiment, the two-wire bus is at most DC48V capable of supporting voltage.
The embodiment of the application provides an irrigation control system and control system's control method, compare with irrigation control system among the prior art, this application is through installing low pressure direct current carrier modulation circuit 113 and low pressure direct current decoding circuit 121 in carrier irrigation device, turn into the direct current of low pressure with the high-pressure alternating current and carry out the operation to irrigation system, compare in wireless irrigation system, the great reinforcing of the interference killing feature of this application, stability is strong, and compare in alternating current power control system, the electric current of this application output is low-voltage direct current, factor of safety strengthens greatly.
As shown in fig. 4, a flow chart of an irrigation control method provided by the embodiment of the present application is applied to any irrigation control system according to the first aspect, and the control method includes:
s401, judging whether to start the first irrigation device to operate or not according to the operation condition of the second irrigation device;
s402, if the second irrigation device stops operating, determining to start the first irrigation device to operate;
and S403, controlling the electromagnetic valve 300 to be opened according to the fact that the first irrigation controller 110 in the first irrigation device completes the switching of the electromagnetic valve 300 from the connection with the second irrigation decoder to the connection with the first irrigation decoder, so as to realize the irrigation operation through the first irrigation device 100.
The irrigation control system 10 and the control system's that this application embodiment provided control method, compare with the irrigation control system among the prior art, this application is through installing low pressure direct current carrier modulation circuit 113 and low pressure direct current decoding circuit 121 in carrier irrigation device, convert the alternating current of high pressure into the direct current of low pressure and come to carry out the operation to irrigation system, compare in wireless irrigation system, the great reinforcing of the interference killing feature of this application, stability is strong, and compare in alternating current power control system, the electric current of this application output is low-voltage direct current, factor of safety strengthens greatly.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An irrigation control system is characterized by comprising a first irrigation device, a first relay and a solenoid valve, wherein the first irrigation device comprises a first irrigation controller and a first irrigation decoder, the first irrigation decoder is electrically connected with the solenoid valve, the first irrigation controller comprises a first micro-control unit, a power supply circuit and a low-voltage direct-current carrier modulation circuit, the first irrigation decoder comprises a low-voltage direct-current decoding circuit, the first micro-control unit is electrically connected with the power supply circuit and the low-voltage direct-current carrier modulation circuit respectively, and the first relay is electrically connected with the low-voltage direct-current carrier modulation circuit and the low-voltage direct-current decoding circuit respectively;
the power supply circuit is used for converting the obtained alternating current of the alternating current power supply into voltage-stabilizing direct current;
the first micro-control unit is used for converting the stabilized direct current into low-voltage direct current so that the converted low-voltage direct current flows to a low-voltage direct current carrier modulation circuit;
the low-voltage direct current carrier modulation circuit is used for carrying out carrier modulation on the low-voltage direct current to obtain low-voltage direct current carrier current, so that the modulated low-voltage direct current flows to the low-voltage direct current decoding circuit through the first relay;
the low-voltage direct current decoding circuit is used for decoding the low-voltage direct current carrier current, so that the decoded low-voltage direct current carrier current controls the electromagnetic valve to be opened, and irrigation operation is performed through the first irrigation device.
2. The irrigation control system as recited in claim 1, further comprising: the second irrigation device comprises a second irrigation controller and a second irrigation decoder, the second irrigation controller and the first irrigation controller are both in communication connection with the central control platform, the second irrigation controller is electrically connected with the first relay, the second irrigation controller and the first irrigation controller cannot be simultaneously connected with the first relay, the second irrigation decoder is electrically connected with the first irrigation decoder, the second irrigation decoder is electrically connected with the solenoid valve, and the second irrigation decoder and the first irrigation decoder cannot be simultaneously connected with the solenoid valve;
the second irrigation device is used for conventionally decoding the current flowing into the second irrigation decoder under the normal working state, so that the decoded current controls the opening of the electromagnetic valve to realize irrigation operation through the second irrigation device;
when the irrigation device is in an abnormal or fault state, the second irrigation device is used for sending an abnormal or fault instruction to the central control platform, so that the central control platform sends a control instruction for starting the first irrigation device to the first micro-control unit in the first irrigation controller;
the first micro-control unit: and the control end of the first relay is controlled to be switched to be connected with the first irrigation controller by being connected with the second irrigation controller, and the electromagnetic valve is controlled to be opened so as to realize irrigation operation through the first irrigation device.
3. The irrigation control system as recited in claim 2, wherein the first irrigation controller further comprises a communication circuit and a switching control circuit, the communication circuit and the switching control circuit being electrically connected to the first micro-control unit, respectively, the switching control circuit being electrically connected to the first relay;
the communication circuit is used for receiving an abnormal or fault instruction sent by the second irrigation device to the central control platform, a control instruction sent by the central control platform to the first micro-control unit for starting the first irrigation device and a switching instruction sent by the switching control circuit to the first relay;
and the switching control circuit is used for sending a switching instruction to the first relay according to the control instruction started by the first irrigation device and controlling the first relay to be connected with the first irrigation controller through being connected with the second irrigation controller and switching.
4. The irrigation control system as recited in claim 3, wherein the first irrigation decoder further comprises: the decoding switching circuit is respectively and electrically connected with the first relay and the second micro-control unit, the second micro-control unit is electrically connected with the low-voltage direct-current decoding circuit, and the second micro-control unit and the second irrigation decoder are both electrically connected with the second relay;
the decoding switching circuit is used for forwarding the processed abnormal or fault instruction to the second micro-control unit so that the second micro-control unit can control the second relay;
and the second micro-control unit is used for receiving the abnormal or fault instruction forwarded by the decoder and analyzing and processing the abnormal or fault instruction so as to switch the control end of the second relay from being connected with the second irrigation decoder to being connected with the first irrigation decoder.
5. The irrigation control system as recited in claim 4, wherein the first irrigation decoder further comprises: the electromagnetic valve switching circuit and the electromagnetic valve driving control circuit are both electrically connected with the second micro-control unit, and the electromagnetic valve switching circuit and the electromagnetic valve are both electrically connected with the electromagnetic valve driving control circuit;
the second micro-control unit is further used for monitoring and receiving the actual voltage of the second irrigation device, and analyzing the actual voltage of the second irrigation device, the standard voltage of the first irrigation device and the standard voltage of the second irrigation device;
the electromagnetic valve switching circuit is used for controlling the second micro-control unit to start the electromagnetic valve driving control circuit and controlling the electromagnetic valve driving control circuit to start when the actual voltage of the second irrigation device is smaller than the standard voltage of the second irrigation device and larger than the standard voltage of the first irrigation device in the analysis result of the second micro-control unit;
and the electromagnetic valve driving control circuit is used for driving the electromagnetic valve to be switched from the second irrigation decoder to the first irrigation decoder.
6. An irrigation control system according to claim 4 wherein the first micro-control unit is of the model STM32F407VET6 and the second micro-control unit is of the model STM32F103RET 6.
7. The irrigation control system as recited in claim 1 further comprising a relay electrically connected to the first relay.
8. An irrigation control system according to claim 3 wherein the communication circuit is embodied as a 3G/4G/5G module circuit and a WIFI network circuit.
9. The irrigation control system as recited in claim 5 wherein the electrical connections between the second irrigation controller and the first relay are both two-wire connections, the electrical connections between the first relay and the first irrigation decoder and the relay are two-wire connections, the electrical connections between the first irrigation decoder and the second irrigation decoder are two-wire connections, and the two-wire connections are carrier wire electrical connections using two-wire direct current.
10. An irrigation control method applied to an irrigation control system according to any one of claims 1-9, the control method comprising:
judging whether to start the first irrigation device to operate or not according to the operation condition of the second irrigation device;
if the second irrigation device stops operating, determining to start the first irrigation device to operate;
and controlling the electromagnetic valve to be opened according to the fact that the first irrigation controller in the first irrigation device completes the switching of the electromagnetic valve from the connection with the second irrigation decoder to the connection with the first irrigation decoder, so that irrigation operation is performed through the first irrigation device.
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| CN202011388282.9A CN112544415A (en) | 2020-12-01 | 2020-12-01 | Irrigation control system and control method thereof |
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