Water-saving irrigation device and system based on optical fiber multi-node comprehensive management communication

Abstract

The invention relates to a water-saving irrigation device and system based on optical fiber multi-node comprehensive management communication, and the device comprises a data collection assembly and a first water delivery pipe which are installed in a farmland, the first water delivery pipe is provided with a plurality of water outlet holes, the first water delivery pipe is communicated with a plurality of second water delivery pipes, and the plurality of second water delivery pipes are in one-to-one correspondence with the plurality of water outlet holes. Flow valves are mounted in the second water conveying pipes, covers are rotationally connected to the top ends of the second water conveying pipes, a plurality of third water conveying pipes are transversely mounted on the covers and are L-shaped, one ends of the third water conveying pipes are communicated with the corresponding second water conveying pipes, and nozzles are mounted at the other ends of the third water conveying pipes. The invention discloses a water-saving irrigation device and system based on optical fiber multi-node comprehensive management communication, and aims to solve the problems that in the prior art, large-area uniform irrigation is generally adopted in agricultural irrigation, too much or too little irrigation occurs in part of farmland areas, and normal growth and development of crops are not facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural irrigation, and in particular to a water-saving irrigation device and system based on optical fiber multi-node integrated management communication. Background Art

[0002] Agricultural irrigation is an important agricultural management technology that has a profound impact on the growth of crops. With climate change and population growth, scientific and reasonable irrigation management is essential to increase crop yields and ensure food security.

[0003] Multiple terminal nodes based on optical fiber are responsible for data collection and control. It obtains soil temperature, humidity and temperature information through optical fiber sensors and converts them into electrical signals. These terminal nodes are connected to valves to control the opening and closing of the irrigation system.

[0004] Existing agricultural irrigation generally adopts large-area uniform irrigation, which leads to over-irrigation or under-irrigation in some farmland areas, which is not conducive to the normal growth and development of crops. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a water-saving irrigation device and system based on optical fiber multi-node integrated management communication, so as to solve the problem that agricultural irrigation in the prior art generally adopts large-area uniform irrigation, resulting in excessive or insufficient irrigation in some farmland areas, which is not conducive to the normal growth and development of crops.

[0006] The present invention is achieved through the following technical solutions:

[0007] A water-saving irrigation device based on optical fiber multi-node integrated management communication, comprising a data acquisition component and a first water pipe installed in a farmland, the acquisition component is used to collect soil moisture content and temperature at multiple points in the farmland, the first water pipe is provided with multiple water outlets, the multiple water outlets are distributed along its length direction, and respectively correspond to different data acquisition areas of the data acquisition component, the first water pipe is connected to multiple second water pipes, the multiple second water pipes are opposite to the multiple water outlets one by one, the multiple second water pipes are each installed with a flow valve, the top ends of the multiple second water pipes are each rotatably connected with a cover, the multiple covers are each laterally installed with multiple third water pipes, the multiple third water pipes are all L-shaped, one end is connected to the corresponding second water pipe, and the other end is installed with a nozzle.

[0008] Furthermore, a fourth water pipe is connected between the first water pipe and the plurality of second water pipes, and the plurality of fourth water pipes are respectively sleeved on the corresponding second water pipes, and one end of the plurality of fourth water pipes is threadedly connected to the corresponding second water pipe, and the other end is fixedly connected to the first water pipe.

[0009] Furthermore, a first filter screen is installed in each of the plurality of fourth water pipes.

[0010] Furthermore, the bottoms of the plurality of covers are fixedly connected to limit blocks, and the plurality of the second water pipes are provided with limit grooves matched with the limit blocks, and the limit blocks can be snapped into the limit grooves.

[0011] Furthermore, a plurality of the covers are provided with through holes, a one-way valve is installed at each of the through holes, and an outlet end of the one-way valve is connected to the second water pipe.

[0012] Furthermore, a collecting tube is fixedly connected to the top of the cover, the collecting tube is trumpet-shaped, and the wide-mouth end of the collecting tube extends upward.

[0013] Furthermore, a second filter screen is installed in the collecting pipe.

[0014] A water-saving irrigation system based on optical fiber multi-node integrated management communication, comprising a water-saving irrigation device based on optical fiber multi-node integrated management communication, a human-machine interface, an edge computing unit, a network switch, a water pump frequency conversion control unit and an automatic flushing control unit;

[0015] The human-machine interface is connected to the edge computing unit via HDMI and USB interfaces;

[0016] The edge computing unit communicates with the water pump frequency conversion control unit and the automatic flushing control unit through a network switch.

[0017] Further including a fiber optic transceiver, a network video recorder and a network monitoring unit;

[0018] Fiber optic transceivers, network video recorders, and network surveillance cameras communicate with the edge computing unit through the network.

[0019] It further includes a fertilization control unit, and the edge computing unit communicates with the fertilization control unit through a network switch.

[0020] The beneficial effects of the present invention are:

[0021] The water-saving irrigation device and system based on optical fiber multi-node integrated management communication, after collecting the soil moisture content and temperature of multiple points in the farmland through the collection component, the staff analyzes the amount of water required at different points according to the data, and adjusts the flow valves at different points. Under the action of the water pump, water flows to different areas of the first pipeline, and flows into multiple second water pipes through multiple water outlets, and then sprays out through the corresponding third water pipe and nozzle. Since the third water pipe is L-shaped and the cover is rotatably connected to the second water pipe, the cover is driven to rotate under the impact of the water flow to achieve a wider range of spraying. When part of the flow valve reaches the setting, the second water pipe no longer enters the water, and accurate water volume control is achieved.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0027] Figure 5 It is a schematic structural diagram of the first water delivery pipe of the present invention;

[0028] Figure 6 The present invention is a flow chart of a water-saving irrigation system based on optical fiber multi-node integrated management communication.

[0029] Figure 7 This is a connection diagram of the water-saving irrigation system based on optical fiber multi-node integrated management communication of the present invention.

[0030] In the figure:

[0031] 1. The first water pipe; 2. The water outlet; 3. The second water pipe; 4. The flow valve; 5. The third water pipe; 6. The nozzle; 7. The fourth water pipe; 8. The first filter; 9. The limit block; 10. The limit groove; 11. The through hole; 12. The one-way valve; 13. The collecting pipe; 14. The second filter; 15. The cover. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0037] See also Figure 1-5The present invention provides a technical solution: a water-saving irrigation device based on optical fiber multi-node integrated management communication, comprising a data acquisition component and a first water pipe 1 installed in a farmland, the acquisition component is used to collect soil moisture content and temperature at multiple points in the farmland, the first water pipe 1 is provided with multiple water outlets 2, the multiple water outlets 2 are distributed along its length direction, and respectively correspond to different data acquisition areas of the data acquisition component, the first water pipe 1 is connected with multiple second water pipes 3, the multiple second water pipes 3 are opposite to the multiple water outlets 2 one by one, the multiple second water pipes 3 are all installed with flow valves 4, the top ends of the multiple second water pipes 3 are rotatably connected with covers 15, the multiple covers 15 are all horizontally installed with multiple third water pipes 5, the multiple third water pipes 5 are all L-shaped, and one end is connected with the corresponding second water pipe 3, and the other end is installed with a nozzle 6.

[0038] In this scheme: it also includes a water pump, the input end of which is connected to an external water source, and the output end is connected to the first water pipe 1. After the collection component collects the soil moisture content and temperature at multiple points in the farmland, the staff analyzes the amount of water required at different points based on the data, and adjusts the flow valves 4 at different points. Under the action of the water pump, water flows to different areas of the first pipeline, and flows into multiple second water pipes 3 through multiple water outlets 2, and then sprays out through the corresponding third water pipe 5 and nozzle 6. Since the third water pipe 5 is L-shaped and the cover 15 is rotatably connected to the second water pipe 3, the cover 15 is driven to rotate under the impact of the water flow, so as to achieve a wider range of spraying. When part of the flow valve 4 is set, the second water pipe 3 no longer takes in water, so as to achieve precise water volume control.

[0039] In this embodiment: the first water pipe 1 and the plurality of second water pipes 3 are connected by a fourth water pipe 7, and the plurality of fourth water pipes 7 are respectively sleeved on the corresponding second water pipes 3, and one end of the plurality of fourth water pipes 7 is threadedly connected to the corresponding second water pipes 3, and the other end is fixedly connected to the first water pipe 1.

[0040] In this solution, the fourth water pipe 7 is connected between the first water pipe 1 and the plurality of the second water pipes 3, and the plurality of the fourth water pipes 7 are respectively sleeved on the corresponding second water pipes 3, and one end of the plurality of the fourth water pipes 7 is threadedly connected to the corresponding second water pipe 3, and the other end is fixedly connected to the first water pipe 1. The distance between the plurality of the second water pipes 3 and the corresponding fourth water pipes 7 can be adjusted to make the third water pipe 5 farther from the ground, so as to adapt to the irrigation of crops at different heights.

[0041] In this embodiment: a first filter screen 8 is installed in each of the plurality of fourth water delivery pipes 7 .

[0042] In this solution, by installing the first filter screen 8 in each of the plurality of fourth water delivery pipes 7, some impurities in the water can be filtered out, thereby reducing the risk of clogging the flow valve 4 and the nozzle 6.

[0043] In this embodiment: the bottoms of the plurality of covers 15 are fixedly connected to the limiting blocks 9 , and the plurality of the second water pipes 3 are provided with limiting grooves 10 adapted to the limiting blocks 9 , and the limiting blocks 9 can be snapped into the limiting grooves 10 .

[0044] In this solution, the limiting blocks 9 are fixedly connected to the bottoms of the plurality of covers 15, and the plurality of second water pipes 3 are provided with limiting grooves 10 adapted to the limiting blocks 9, and the limiting blocks 9 can be snapped into the limiting grooves 10, so that the covers 15 can be more smoothly installed on the second water pipes 3.

[0045] In this embodiment, a plurality of the covers 15 are provided with through holes 11 , and a one-way valve 12 is installed at each of the through holes 11 . The outlet end of the one-way valve 12 is connected to the second water pipe 3 .

[0046] In this solution, through holes 11 are provided on the plurality of covers 15, and one-way valves 12 are installed at the plurality of through holes 11, and the outlet end of the one-way valve 12 is connected to the second water pipe 3. When it rains, part of the rainwater flows into the second water pipe 3 and the first water pipe 1 through the through holes 11 and the one-way valve 12, thereby saving some water resources.

[0047] In this embodiment: the top of the cover 15 is fixedly connected with a collecting tube 13 , the collecting tube 13 is trumpet-shaped, and the wide-mouth end of the collecting tube 13 extends upward.

[0048] In this solution, by fixing the collecting pipe 13 on the top of the cover 15, the collecting pipe 13 is trumpet-shaped, and the wide-mouth end of the collecting pipe 13 extends upward, so that more rainwater can be collected faster.

[0049] In this embodiment: a second filter screen 14 is installed in the collecting pipe 13 .

[0050] In this solution, by installing the second filter screen 14 in the collecting pipe 13, it is possible to reduce the entry of foreign impurities into the collecting pipe 13 and reduce the risk of the one-way valve 12 being blocked.

[0051] See also Figure 6 The present invention provides a technical solution: a water-saving irrigation system based on optical fiber multi-node integrated management communication, including a water-saving irrigation device and a control module based on optical fiber multi-node integrated management communication, the control module is connected to a gateway, the gateway optical fiber is connected to an optical switch, the optical switch is handshake-connected to multiple sub-controls, and the multiple sub-controls respectively correspond to the multiple flow valves 4 and data acquisition components.

[0052] In this solution: Gateway is also called network connector or protocol converter. Gateway realizes network interconnection above the network layer. It is a complex network interconnection device and is only used for interconnection between two networks with different high-level protocols. Gateway can be used for wide area network interconnection as well as local area network interconnection. Gateway is a computer system or device that performs the important task of conversion. It is used between two systems with different communication protocols, data formats or languages, or even completely different architectures. The gateway is a translator. Unlike a bridge that simply transmits information, a gateway repackages the received information to meet the needs of the destination system.

[0053] Optical switches are devices that can exchange data using optical signals. As communication networks gradually develop towards an all-optical platform, network optimization, routing, protection, and self-healing functions become increasingly important in the optical field. Optical switches can ensure network reliability and provide a flexible signal routing platform. Although existing communication systems all use circuit switching, future all-optical networks will require pure optical switches to complete signal routing functions in order to achieve high network rates and protocol transparency.

[0054] Traditional applications of optical switching:

[0055] One of the basic functions of optical switches in communication networks is to automatically recover when a fiber breaks or a transponder fails. Most modern fiber networks have more than two fiber routes connected to key nodes. Through optical switches, optical signals can easily avoid failed fibers or transponders and re-select an effective route to the destination. However, the rate at which the signal is rerouted is very important to avoid information loss, especially in high-speed telecommunication systems.

[0056] Another traditional application of optical switches is network monitoring. At a remote fiber test point, a 1×N optical switch can be used to connect multiple optical fibers to an optical time domain reflectometer (OTDR) to monitor the fiber link. Using an optical switch and OTDR, faults on each fiber link can be accurately located. In actual transmission networks, optical switches also allow users to remove signals or insert a network analyzer for real-time monitoring without interfering with network data transmission.

[0057] Optical switches are also commonly used for field testing of fiber optic components. For example, a multi-channel optical switch is a powerful tool for online testing of fiber optic components. By monitoring each optical switch channel corresponding to a specific test parameter, multiple components can be tested continuously.

[0058] A waveguide optical switch using barium titanium has been developed, using a molecular beam epitaxy technique. Compared with lithium niobium optical switches, this new optical switch uses much less driving power.

[0059] The main advantage of optoelectronic switches is their high switching speed, which can reach nanoseconds. However, these optical switches have serious insertion loss and noise, are sensitive to electrical drift, and usually require higher operating voltages. Thus, the high production cost limits the widespread commercial application of optoelectronic switches.

[0060] Optomechanical optical switches rely on mature optical technology and are the most common optical switches currently. Its operating principle is very simple. In an optical switch, the input optical signal is mechanically switched by moving the optical fiber terminal or prism to guide or reflect the light to the output optical fiber. Optomechanical optical switches can only achieve millisecond switching speeds, but they are widely used due to their low cost, simple design and good optical performance.

[0061] Multiple sub-controls correspond to different flow valves 4, and different detection positions spray different amounts of water, thereby achieving precise irrigation and reducing the waste of water resources.

[0062] In this embodiment: the data acquisition component collects soil moisture content and temperature at multiple points in the farmland, and transmits the collected environmental data to the corresponding sub-controller;

[0063] The plurality of sub-controllers receive the environmental data and transmit the environmental data to the optical switch;

[0064] The optical switch receives environmental data and converts it into electrical signals for transmission to the control module;

[0065] The control module receives and analyzes the environmental data and sends control instructions to the gateway;

[0066] The gateway receives the control instruction and sends the control instruction to the optical switch;

[0067] The optical switch converts the control instruction into an optical signal and transmits it to the sub-controller connected to the optical switch through the optical fiber;

[0068] The sub-controller receives the control instruction and sends it to the corresponding flow valve 4 .

[0069] In this solution, the soil moisture content and temperature data at multiple points are transmitted to the control module, and the control module distributes the data to the control module.

[0070] In this embodiment: the control module includes a memory, a processor and a network module;

[0071] The memory is used to store environmental data;

[0072] The processor is used to compare the difference between the stored farmland environmental data and the set value, and analyze the amount of water required for irrigation;

[0073] The network module is used to receive farmland environment data sent by the gateway and transmit control instructions to the gateway.

[0074] In this solution: the memory, processor and network module are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines. The memory stores at least one functional module that can be stored in the memory in the form of software or firmware. The processor executes various functional applications and data processing by running the functional module in the form of software or hardware stored in the memory, that is, implementing the method performed by the electronic device in this application.

[0075] The memory may be, but is not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), a disk or a solid-state drive, etc. The memory may also be used to store a program, and the processor executes the program after receiving an execution instruction.

[0076] The processor may be, but is not limited to, an integrated circuit chip having data processing capabilities. General purpose processors include central processing units (CPU), network processors (NP), etc. The methods, steps, and logic block diagrams in this application may be implemented or executed. The general purpose processor may be a microprocessor or any conventional processor, etc. Generally, the processor may be a PCB603C01 chip, which has a sensitivity of 100mV / g, a range of ±50g, a frequency band of 5-10kHz, and an applicable temperature of -54°C to +121°C.

[0077] The network module is used to establish a communication connection between the control module and the gateway through the network to realize the sending and receiving operations of network signals and data. The above network signals may include wireless signals or wired signals.

[0078] See also Figure 7 , the present invention provides a technical solution: a water-saving irrigation system based on optical fiber multi-node integrated management communication, including a water-saving irrigation device based on optical fiber multi-node integrated management communication, a human-machine interface, an edge computing unit, a network switch, a water pump frequency conversion control unit, an automatic flushing control unit, a fertilization control unit, an optical fiber transceiver, a network video recorder and a network monitoring unit;

[0079] The human-machine interface is connected to the edge computing unit via HDMI and USB interfaces;

[0080] The edge computing unit communicates with the water pump frequency conversion control unit, automatic flushing control and fertilization control unit through the network switch.

[0081] Fiber optic transceivers, network video recorders, and network surveillance cameras communicate with the edge computing unit through the network.

[0082] The edge computing unit is responsible for the operation of the entire station and the management of its historical data, while receiving and processing various real-time information. Only the host has signal output. The host and backup machines should be able to track each other and realize automatic and manual switching.

[0083] In this solution: In order to ensure the clock consistency between the edge computing unit and other unit devices, as well as the clock consistency between the monitoring system and the dispatching center, the dispatching center network timing method is generally used to ensure the consistency of the system clock.

[0084] It also includes an uninterruptible power supply as an emergency backup power supply. The uninterruptible power supply provides a short-term emergency power supply of not less than 30 minutes when there is a power failure in the irrigation head. When the DC power supply system is used, an inverter device should be used as a backup power supply and the edge computing unit should be notified through serial port communication.

[0085] The edge computing unit adopts the LINUX operating system and the mainstream database LAN intranet data refresh requirements: the operation response time of the menu and function modules is controlled within 2s, the data update processing time is controlled within 15s, the data conversion and transmission time is within 60s, the data collection time is within 60s (the real-time control sensor collection time is within 1s), and the data query time does not exceed 30s.

[0086] Water pump frequency conversion control unit: The frequency conversion cabinet is equipped with a voltmeter and an ammeter display, the PLC supports Ethernet function, manual start / stop knob / automatic knob, fault indicator light, operation indicator light, remote transmission of air power switch tripping signal, remote transmission of undervoltage / overvoltage signal, remote transmission protection of abnormal water shortage and over-water pressure signal, abnormal motor and water pump overtemperature signal protection, reserved switching of water pump contactor control, domestic / foreign first-line inverter brands, with RS485 communication, PID, maximum power limit, start time adjustment and other functions, the PLC has at least 2 4-20mA analog signal acquisition PID inverters, which automatically adjust the output flow according to changes in pipeline pressure to meet the normal working requirements of irrigation.

[0087] The automatic flushing control unit mainly performs the control function of automatic flushing filters such as sand and gravel filters, laminated filters, and mesh filters. It prevents filter element blockage through automatic flushing to ensure the cleanliness of the water source. It includes manual sequence control flushing buttons, pressure difference and timing control automatic flushing functions. By monitoring the size of the inlet and outlet pressures, and calculating the inlet and outlet pressure difference, the corresponding automatic flushing control is performed. It can support pressure difference and timing trigger automatic sequential flushing program, support display of pressure, pressure difference, timing time, flushing station status and sequence, flushing program progress, pressure difference flushing times, timing flushing times and other information, support automatic pressure sensor calibration function without pressure difference, support manual / automatic flushing program switching, and can configure automatic flushing program parameters such as: backwashing cycle, time, delay time, pressure difference action threshold, pressure sensor upper and lower limits, main valve enable, backwashing timing program enable, backwashing pressure difference program enable. The water electromagnetic flowmeter is connected to PLC through RS485. The pressure sensor adopts 4-20mA transmission, static pressure 16bar, and pressure difference accuracy 0.1bar. The solenoid head of the drain valve and backwash valve adopts AC24 AC normally closed type, and the interface is 1 / 4 command pipe interface. The self-cleaning motor and electric main valve drive are 380V three-phase AC drive circuit, and have in-place signal monitoring function. It uses a set of PLC to complete the connection with the pump station unit by expanding AI, DI, DO, and RS485 signals. The fertilization control unit can support cyclic timing stirring The mixing and irrigation program automatically triggers the timing mixing function, supports the display of fertilization formula, fertilization flow, mother liquid barrel capacity, fertilizer amount, fertilization irrigation program progress, water inlet status, timing program progress, fertilization flow ratio calculation, timing mixing status and other functions, supports timing fertilization program, program-controlled fertilization program (pre-fertilization water, post-fertilization water function), the fertilization unit consists of mother liquid tank level monitoring, stirring motor drive, water supply solenoid valve drive, fertilization pump drive, fertilization electromagnetic flowmeter collection, Ethernet PLC, optical transceiver, 380V isolation transformer and The switch power supply is composed of the fertilizer electromagnetic flowmeter connected to the PLC via RS485. The liquid level sensor uses 4-20mA to supply the PLC, and the water level accuracy is <1cm. The water inlet valve solenoid head is driven by an AC24 normally closed drive circuit. The stirring motor and fertilizer pump are driven by a 380V three-phase AC drive circuit. The staggered / open phase switch, manual switch fertilizer pump, stirring motor, water inlet solenoid valve and other signals are sent to the PLC. The AI, DI, DO, and RS485 signals are converted into Ethernet signals through the PLC, and then connected to the network through the optical transceiver.

[0088] The network monitoring unit is mainly used to observe the water level of the water inlet pool and the operation status of key places such as the pump room, low-voltage power distribution room, filter, fertilizer mother liquid pool, fertilizer applicator, etc. The video monitoring is planned to adopt a video system based on IP network architecture, which mainly consists of on-site monitoring cameras and network communication equipment, and NVR hard disk recording equipment and monitoring display screen in the central control room.

[0089] It also includes on-site sub-control host, decoder and meteorological, soil, monitoring and other information collection systems.

[0090] The on-site sub-control host controls the remote valve wired decoder to realize the switch control of the electromagnetic valve group. The on-site valve wired decoder is directly connected to the electromagnetic head of the electromagnetic valve through a waterproof cable. The electromagnetic valve is installed on each system branch pipe.

[0091] The on-site irrigation solenoid valve group consists of solenoid valves, on-site valve wired decoders, exhaust valves, manual valves, solenoid valve boxes, pipe fittings and other components. The solenoid valve is installed in the solenoid valve well, and one valve wired decoder can control at most one solenoid valve.

[0092] Working principle of single bus valve control system:

[0093] Compared with the four-wire system (two power supply lines and two communication lines), the single bus combines the power supply line and the signal line into one, and the two lines realize both communication and power supply. The single bus saves construction and cable costs, and brings great convenience to on-site construction and later maintenance.

[0094] Can save wires: The solenoid valve is only connected to the decoder, and does not need to be connected back to the controller, so the amount of wires used can be greatly reduced. Take a 16-station controller as an example: if a traditional multi-line time controller is used, one solenoid valve per station, 17 wires need to be connected to the controller. If the venue is like a golf course, which is long and narrow, the amount of wires used is very considerable. If a two-wire decoder system is used, only two wires are needed.

[0095] Save the number of controllers: one controller can connect dozens of solenoid valves;

[0096] Installation is extremely simple.

[0097] Wire faults are easy to diagnose (there is a special diagnostic device);

[0098] Easy to increase the number of stations: just add a decoder and connect the decoder to the controller to control the two lines. There is no need to dig trenches and lay wires to the controller like a multi-line system.

[0099] When the on-site sub-control host opens a station, power and digital signals are sent to the decoder through two lines. Each decoder has its own address (number). When a decoder interprets the control signal sent to it, it opens or closes the solenoid valve of the corresponding station.

[0100] Decoder working principle:

[0101] The decoder is a control unit with a microprocessor, which can transmit and feedback electrical signals as well as digital signals. It is an important part of the two-wire controller. The decoder has different numbers of stations, usually 1, 2, 4, 6, etc.

[0102] Solenoid valve: Motor-driven, electromagnetic-driven pulse pilot solenoid valve.

[0103] About the decoder encoding:

[0104] The decoder can be connected to the controller for encoding (setting the number), or a dedicated encoder can be used for encoding.

[0105] The sub-control host is composed of a human-machine operation interface, a main control panel, a communication module, a two-wire control module, etc., which can realize the compilation and execution of automatic irrigation programs; it can address and encode the decoder, send execution commands, query commands, control remote power supply, etc. through a two-wire bus.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A water-saving irrigation device based on optical fiber multi-node integrated management communication, characterized in that: The invention comprises a data collection component and a first water pipe (1) installed in a farmland, wherein the collection component is used to collect soil moisture content and temperature at multiple points in the farmland, wherein the first water pipe (1) is provided with multiple water outlet holes (2), wherein the multiple water outlet holes (2) are distributed along the length direction thereof and respectively correspond to different data collection areas of the data collection component, wherein the first water pipe (1) is connected to multiple second water pipes (3), wherein the multiple second water pipes (3) are opposite to the multiple water outlet holes (2) one by one, wherein flow valves (4) are installed in the multiple second water pipes (3), wherein the top ends of the multiple second water pipes (3) are rotatably connected to covers (15), wherein multiple third water pipes (5) are transversely installed on the multiple covers (15), wherein the multiple third water pipes (5) are all L-shaped, wherein one end of the multiple third water pipes (5) is connected to the corresponding second water pipe (3), and the other end of the multiple third water pipes (5) is installed with a nozzle (6).

2. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 1 is characterized in that: A fourth water pipe (7) is connected between the first water pipe (1) and the plurality of second water pipes (3); the plurality of fourth water pipes (7) are respectively sleeved on the corresponding second water pipes (3); one end of the plurality of fourth water pipes (7) is threadedly connected to the corresponding second water pipes (3), and the other end is fixedly connected to the first water pipe (1).

3. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 2 is characterized in that: A first filter screen (8) is installed in each of the plurality of fourth water delivery pipes (7).

4. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 1 is characterized in that: The bottoms of the plurality of covers (15) are all fixedly connected to a limiting block (9), and the plurality of the second water pipes (3) are all provided with a limiting groove (10) adapted to the limiting block (9), and the limiting block (9) can be snapped into the limiting groove (10).

5. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 1 is characterized in that: A through hole (11) is formed on each of the plurality of covers (15), and a one-way valve (12) is installed at each of the plurality of through holes (11), wherein the outlet end of the one-way valve (12) is connected to the second water delivery pipe (3).

6. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 5 is characterized in that: The top of the cover (15) is fixedly connected with a collecting pipe (13), the collecting pipe (13) is trumpet-shaped, and the wide-mouth end of the collecting pipe (13) extends upward.

7. The water-saving irrigation device based on optical fiber multi-node integrated management communication according to claim 6 is characterized in that: A second filter screen (14) is installed in the collecting pipe (13).

8. A water-saving irrigation system based on optical fiber multi-node integrated management communication, characterized in that: It includes a water-saving irrigation device based on optical fiber multi-node integrated management communication as described in claim 1, a human-machine interface, an edge computing unit, a network switch, a water pump frequency conversion control unit and an automatic flushing control unit; The human-machine interface is connected to the edge computing unit via HDMI and USB interfaces; The edge computing unit communicates with the water pump frequency conversion control unit and the automatic flushing control unit through a network switch.

9. The water-saving irrigation system based on optical fiber multi-node integrated management communication according to claim 8, characterized in that: It also includes fiber optic transceivers, network video recorders, and network monitoring units; Fiber optic transceivers, network video recorders, and network surveillance cameras communicate with the edge computing unit through the network.

10. The water-saving irrigation system based on optical fiber multi-node integrated management communication according to claim 8, characterized in that: It also includes a fertilization control unit, and the edge computing unit communicates with the fertilization control unit through a network switch.

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