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Fine irrigation surface water flow state monitoring system

A condition monitoring system and surface water flow technology, applied in the field of farmland irrigation, can solve the problems of human interference, slow flow rate, water depth variation, difficulty in observing surface water depth, etc., and achieve the effect of improving automation level, improving irrigation, and reducing invalid water abandonment.

Pending Publication Date: 2020-10-13
FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In surface irrigation, the state of surface water flow is generally observed at a fixed point. According to the length of the furrow (ditch), the appropriate observation interval is determined and then manually observed. However, the observation of the water flow subsidence time is highly subjective, and the human influence is relatively large, and in the case of densely planted crops, the difficulty of observing the water flow advancement and subsidence time will be correspondingly increased. The characteristics of slow flow velocity and small change in water depth make it difficult to observe the surface water depth; in addition, the EC value of water flow is mostly measured by taking water samples back to the laboratory, and there will be great human interference from sampling, transportation to measurement. It affects the judgment of irrigation, especially the process of fertilization and irrigation, and the field observation of these parameters requires a lot of manpower and material resources

Method used

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  • Fine irrigation surface water flow state monitoring system
  • Fine irrigation surface water flow state monitoring system
  • Fine irrigation surface water flow state monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] combine figure 1 and figure 2 , a fine irrigation surface water flow state monitoring system, used to monitor the water flow advancement and subsidence process of irrigation water in the farmland, including a bracket, a collector 4, an ultrasonic water level sensor 8 connected to the collector 4, and an EC sensor 6, the bracket Including a support plate 2, a bottom plate 1 and a top plate 3 vertically connected to the support plate 2 respectively, the support plate 2 can adopt a telescopic plate, which is convenient for adjusting the height of the whole device, and the collector 4 is arranged on the side of the top plate 3 away from the support plate 2, The ultrasonic water level sensor 8 is arranged on the end of the top plate 3 facing the support plate 2 and away from the collector 4 , and the EC sensor 6 passes through the top plate 3 and is connected to the collector 4 .

[0032] The collector 4 is provided with a solar panel 5 that provides an uninterruptible pow...

Embodiment 2

[0034] combine Figure 1-3 , a fine irrigation surface water flow state monitoring system, comprising a bracket, a collector 4, an ultrasonic water level sensor 8 connected to the collector 4, and an EC sensor 6, the collector 4 including a main control circuit board and a driving circuit board connected by communication, The EC sensor 6 and the ultrasonic water level sensor 8 are all connected to the main control circuit board, and the main control circuit board includes a CY8C29466 model main control microcontroller with a communication module, and the main control microcontroller is selected with an extended master-slave device function The single-chip microcomputer is used as the control core, and the main control microcontroller sends the instructions received by the communication module and the data collected by the EC sensor 6 and the ultrasonic water level sensor 8 to the PLC controller, and the driving circuit board includes a model with a PWM boost module P89LPC934 s...

Embodiment 3

[0036] combine Figure 1-4 , a fine irrigation surface water flow state monitoring system, comprising a bracket, a collector 4, an ultrasonic water level sensor 8 connected to the collector 4, and an EC sensor 6, the ultrasonic water level sensor 8 and the EC sensor 6 are electrically connected to the collector 4, the The collector 4 is connected to the control center through a PLC controller.

[0037]Evenly select several measuring points in the border field, and fix the monitoring system in each measuring point, open the valve of the irrigation device, the irrigation water flows to each measuring point in the border field, and the collector in each measuring point passes the collected data through The PLC controller sends it to the computer in the control center, and the control center estimates the soil infiltration parameters with the help of the ground irrigation model, predicts the irrigation process, and makes an optimal decision based on the selected irrigation control...

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Abstract

The invention relates to a fine irrigation surface water flow state monitoring system. The system comprises a support, a collector, and an ultrasonic water level sensor and an EC sensor which are connected with the collector, the support comprises a supporting plate, and a bottom plate and a top plate which are respectively perpendicularly connected with the supporting plate, the collector is arranged on the side, away from the supporting plate, of the top plate, the ultrasonic water level sensor is arranged at the end, facing the supporting plate, of the top plate and is away from one side ofthe collector, the EC sensor penetrates through the top plate and is connected to the collector, the ultrasonic water level sensor and the EC sensor are electrically connected with the collector, andthe collector is connected with the control center through the PLC. According to the monitoring system provided by the invention, the observation precision of ground irrigation water flow movement process data is improved, and ground irrigation process feedback and control are realized.

Description

technical field [0001] The invention belongs to the technical field of farmland irrigation, and in particular relates to a fine irrigation surface water flow state monitoring system. Background technique [0002] In most areas of my country, surface irrigation is still the main method of farmland irrigation, especially border irrigation. Irrigation water use efficiency is low and irrigation water quality is not high. Aiming at the common problems of surface irrigation, studying the state of water flow under surface irrigation can provide technical support for deriving reasonable irrigation technical parameters and surface irrigation operation indicators, so as to realize fine surface irrigation. [0003] In fine surface irrigation, it is first necessary to monitor the state of surface water flow into the furrow, such as surface water flow advance and retreat time, surface water depth, water flow EC value and other irrigation variables in real time, so as to obtain real-time ...

Claims

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Application Information

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IPC IPC(8): G01D21/02G01D11/16
CPCG01D21/02G01D11/16
Inventor 孙秀路李金山贾艳辉孙浩李浩程千刘洋
Owner FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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