CN205742115U - Irrigated area gate remote auto controls water-saving system - Google Patents

Abstract

The gate remote automatic control water-saving system of the irrigation area belongs to the field of modernization and automation management technology of the irrigation area, including the monitoring center, the gate local control unit, the canal system, the gate and the water measuring tank; the monitoring center includes the main controller and the display unit, and the main controller includes Water level and flow monitoring unit, fault analysis unit, storage unit, alarm and optimized water distribution unit; gate local control unit includes programmable controller, gate opening and closing transmission mechanism, water level sensor, and the canal system includes two channels or more than two channels, and the water inlet of each channel is provided with a gate; the inside of the channel is provided with a measuring tank, and the embankment of the channel is provided with a water level logging device equipped with a water level sensor. The utility model comprehensively solves the problems of modern management and low level of automation in current irrigation areas, improves the utilization rate of irrigation water, not only saves precious water resources, but also plays a key role in the sustainable development of irrigation areas, and contributes to the improvement of the degree of agricultural modernization .

Description

Water-saving system for remote automatic control of gates in irrigation districts

technical field

The utility model belongs to the technical field of automatic management of irrigation districts, in particular to a water-saving system for remote automatic control of gates in irrigation districts.

Background technique

The agricultural water-saving measures used by countries all over the world can be summarized into four categories: engineering water-saving, agronomic water-saving, biological water-saving and management water-saving. The application of these water-saving measures is roughly distributed in four basic links: one is to reduce water evaporation and seepage loss in the process of canal pipeline water delivery, and improve the efficiency of irrigation water delivery; the other is to reduce the loss of water in the process of field irrigation. Deep seepage and surface loss can improve the utilization rate of irrigation water and reduce the water consumption per unit of irrigated area; the third is to store water and preserve moisture, reduce the evaporation loss of farmland soil, and maximize the use of natural precipitation and irrigation water resources; the fourth is to improve Crop water use efficiency, reduce the luxury transpiration consumption of crops, and obtain higher crop yield and water efficiency.

There is a big gap in the water saving of irrigation areas in my country compared with developed countries. The water saving transformation of irrigation areas is mostly limited to the first step that developed countries have completed, that is, to solve primary problems such as leakage in the water delivery process. In the field of research, it is mostly limited to solving information management. System construction and application of sluice control technology lack research on water-saving technology from the perspective of the entire irrigation system and organically integrate it with sluice control and information management. Sun Jian from the Hongjin Irrigation District Management Office in Huaian City, Jiangsu Province published the development and application of the automation control system of the Hongjin Irrigation District. Although the detection and control gates are proposed, there are no water measurement facilities, and the accuracy of control and flow measurement cannot be achieved; Wuhan Wu Jing of the University of Science and Technology published the design of the remote control system for the gate of the irrigation area, although the database was established, but it was unable to automatically control the open channels and pipelines; Realize the remote automatic control of the gate, but it is impossible to realize the real-time control of the gate according to the flow change. Therefore, a new type of technical solution is urgently needed in the existing technology to solve the problems of "organic combination of channel water measurement and gate automatic control", "automatic control of gates at all levels in irrigation area to optimize water distribution", "fault diagnosis and fuzzy control of gate remote automatic control".

Utility model content

The technical problem to be solved by the utility model is: to provide a water-saving system for remote automatic control of gates in irrigation areas, which can comprehensively solve the problems of modern management of irrigation areas and low level of automation, improve the utilization rate of irrigation water, save precious water resources, and It plays a key role in the sustainable development of irrigation areas and contributes to the improvement of agricultural modernization.

The water-saving system for remote automatic control of gates in irrigation areas is characterized by: including a monitoring center, a local gate control unit, canal systems, gates and water measuring tanks;

The monitoring center includes a main controller and a display unit, and the main controller includes a flow monitoring unit, a fault analysis unit, a storage unit, an alarm and an optimized water distribution unit;

The on-site control unit of the gate includes a programmable controller, a gate opening and closing transmission mechanism, and a water level sensor. The water level sensor is connected to the programmable controller in communication. The main controller set inside the monitoring center is connected by communication; the gate opening and closing transmission mechanism is connected with the gate;

The canal system includes two channels or more than two channels, and the water inlet of each channel is provided with a gate; the inside of the channel is provided with a measuring tank, and the water level logging is provided on the embankment; the water level sensor Set in the water level log.

The gate opening and closing transmission mechanism is a turbine screw lift.

The measuring tank is a wing-shaped measuring tank or a wing-shaped cylindrical measuring tank.

A fuzzy algorithm unit and a fuzzy decision unit are arranged inside the programmable controller.

Through the above-mentioned design scheme, the utility model can bring the following beneficial effects: the remote automatic control water-saving system of the gate in the irrigation area can comprehensively solve the problems of modern management and low automation level in the current irrigation area, improve the utilization rate of irrigation water, and save precious water resources , It also plays a key role in the sustainable development of irrigation areas and contributes to the improvement of agricultural modernization.

The nonlinear dynamic model established by dynamic neural network can better reflect the hydraulic characteristics and mechanical characteristics of the gate control process; the self-adaptive fuzzy controller designed with advanced control strategy can ensure the stability and reliability of the gate control system and flexibility; the fault self-diagnosis expert system is adopted to ensure automatic emergency stop and power-off when faults occur in each link of the system, and an alarm signal is sent to the upper computer to solve the fault problems that may occur during the remote automatic control of the gate; the use of fuzzy Control technology, Java and GPRS wireless network technology, water measurement technology, and support vector machine optimization water distribution modeling technology carry out technology integration and innovation in multidisciplinary fields, and effectively realize the high-precision remote automatic control system for water-saving gates in irrigation areas.

The wing cylindrical measuring tank is used to monitor the channel flow and water volume, which provides an accurate basis for the remote automatic control and adjustment of the gate, thereby ensuring that the water-saving system has high water-saving benefits and control accuracy, and can provide reliable gate opening for optimal water distribution in irrigation areas. The degree scheduling scheme can reduce the investment of water measuring facilities under the premise of ensuring the accuracy of water measuring. It has strong practicability, simple operation and good adaptability.

The monitoring center can monitor the operation state of the gate opening and closing transmission mechanism of the local control unit in real time. When the gate opening and closing transmission mechanism fails, it can send an alarm signal and perform fault analysis, which is conducive to maintaining smooth operation of the system.

The turbine screw lift used in the gate opening and closing transmission mechanism has the functions of lifting, lowering, propulsion with the help of accessories, turning over and adjustment of various height positions, and has a compact structure and a small volume.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described:

Fig. 1 is a flow diagram of the water-saving system for remote automatic control of gates in irrigation areas of the utility model.

Fig. 2 is a structural schematic diagram of the water-saving system for remote automatic control of gates in the irrigation area of the utility model.

In the figure, 1-monitoring center, 2-gate local control unit, 3-canal system, 4-gate, 5-main controller, 6-display unit, 7-water level logging, 8-measuring tank, 9-programmable Controller, 10-gate opening and closing transmission mechanism, 11-water level sensor, 12-head water source, 501-flow monitoring unit, 502-fault analysis unit, 503-storage unit, 504-alarm, 505-optimized water distribution unit, 901-fuzzy algorithm device, 902-fuzzy decision device.

detailed description

The gate remote automatic control water-saving system in the irrigation area, as shown in Figure 1 and Figure 2, includes a monitoring center 1, a gate control unit 2, a canal system 3, a gate 4, and a water measuring tank 8;

The monitoring center 1 includes a main controller 5 and a display unit 6, and the main controller 5 includes a flow monitoring unit 501, a fault analysis unit 502, a storage unit 503, an alarm 504 and an optimized water distribution unit 505;

The gate control unit 2 includes a programmable controller 9, a gate opening and closing transmission mechanism 10, and a water level sensor 11. The water level sensor 11 communicates with the programmable controller 9, and the signal output terminals of the programmable controller 9 are respectively It communicates with the gate opening and closing transmission mechanism 10 and the main controller 5 arranged inside the monitoring center 1; the gate opening and closing transmission mechanism 10 is connected with the gate 4;

The canal system 3 includes two or more channels, and the water inlet of each channel is provided with a gate 4; the inside of the channel is provided with a measuring tank 8, and a water level logging well 7 is provided on the embankment; The water level sensor 11 is arranged in the water level logging well 7 .

The gate opening and closing transmission mechanism 10 is a turbine screw lift.

The measuring tank 8 is a wing-shaped measuring tank or a wing-shaped cylindrical measuring tank.

The programmable controller 9 is provided with a fuzzy algorithm unit 901 and a fuzzy decision unit 902 .

The optimized water distribution unit 505 is an optimized water distribution model of a support vector machine, and uses a neural network algorithm to divide the original data into K groups, wherein K is a natural number, and each subset data is used as a verification set, and the remaining K-1 The group subset data is used as the training set to obtain K models, and the average of the classification accuracy of the final verification set of the K models is taken as the performance index of the classifier, and the parameters are selected.

The monitoring center 1 of the water-saving system for remote automatic control of gates in the entire irrigation area is composed of a number of on-site control units 2 installed on the water source 12 at the canal head and the gates 4 nodes of each branch canal. The monitoring center 1 recovers the flow at the gates of the entire irrigation area through the GPRS network , water level and gate opening energy status information, according to the water demand of the irrigation area and crop growth characteristics, real-time dynamic allocation of water distribution of each main and branch canal, and sent to the gate control unit 2 through the GPRS network. After receiving the water distribution command, the local control unit 2 of each gate separates the water distribution amount and continuous water distribution time and other information from the command information, and realizes the automation of irrigation water distribution by adjusting the opening of the gate 4 .

The programmable controller 9 in the on-site control unit 2 of the gate is the core component, which realizes switching between manual and automatic working conditions of the on-site gate control unit, and at the same time monitors the status of each component device of the on-site gate control unit, and controls the on-site control of the gate. The water discharge of the unit, the opening time of the gate, the real-time flow through the gate, and the operating status of each component device of the local control unit are transmitted to the monitoring center 1 through the GPRS network.

By communicating with the water level sensor 11, the water level data of the water measuring tank 8 placed in the downstream of the gate 4 can be read in real time, by the formula

In the formula: Q- channel flow, m ³ /s;

H- channel water depth at the water gauge upstream of the measuring tank, m;

Bc-throat width of measuring tank, m;

g-acceleration of gravity, m/s ² .

The water level data is converted into the flow data passing through the gate, and the water volume is accumulated according to time.

Complete the fuzzy-PID adjustment calculation, adjust the gate opening in real time, and finely control the flow through the gate.

Through the remote automatic control water-saving system of the irrigation area gate designed by the utility model, the control accuracy of the gate is more than 95%, and it is relatively stable, and the water measurement error can be controlled within 5%, which comprehensively solves the current management level of the irrigation area and improves the irrigation water of the irrigation area. The utilization rate not only saves water, but also plays a key role in the modernization of irrigation areas and contributes to the sustainable development of society as a whole.

Claims (4)

1. gate remote auto in irrigated area controls water-saving system, it is characterized in that: include Surveillance center (1), gate local control unit (2), canal system (3), gate (4) and flume (8)；

Described Surveillance center (1) includes master controller (5) and display unit (6), and described master controller (5) includes flow monitoring list Unit (501), accident analysis unit (502), memory element (503), alarm (504) and optimal water allocation unit (505)；

Described gate local control unit (2) includes Programmable Logic Controller (9), gate opening/closing drive mechanism (10), level sensor Device (11), described level sensor (11) communicates to connect with Programmable Logic Controller (9), the signal output of Programmable Logic Controller (9) End respectively with gate opening/closing drive mechanism (10) and be arranged on the internal master controller (5) of Surveillance center (1) and communicate to connect；Described Gate opening/closing drive mechanism (10) is connected with gate (4)；

Described canal system (3) includes two channels or the channel of more than two, and the water inlet of every channel (3) is provided with gate (4)；The inside of channel is provided with flume (8), and Qu Dishang is provided with water level logging system (7)；Described level sensor (11) It is arranged in water level logging system (7).

Irrigated area the most according to claim 1 gate remote auto controls water-saving system, it is characterized in that: described gate opening/closing passes Motivation structure (10) is worm screw elevator.

Irrigated area the most according to claim 1 gate remote auto controls water-saving system, it is characterized in that: described flume (8) For airfoil-shaped flow flume or wing-column-shaped flume.

Irrigated area the most according to claim 1 gate remote auto controls water-saving system, it is characterized in that: described PLC technology Device (9) is internally provided with fuzzy algorithmic approach device (901) and fuzzy judgment device (902).