CN-121970672-A - Drip irrigation anti-blocking system and method based on tail end working condition sensing and targeted cleaning

CN121970672ACN 121970672 ACN121970672 ACN 121970672ACN-121970672-A

Abstract

The invention discloses a drip irrigation anti-blocking system and method based on terminal working condition sensing and targeted cleaning, and belongs to the technical field of intelligent agriculture. The method comprises a raw water tank, a front-end self-adaptive processing unit, an irrigation pipe network, a plurality of intelligent drippers, a system controller and a target cleaning agent release unit, wherein the front-end self-adaptive processing unit is configured to be capable of purifying irrigation water and killing microorganisms, the irrigation pipe network is configured to be capable of conveying the irrigation water to an irrigation area, the intelligent drippers are arranged on the irrigation pipe network and are configured to be capable of realizing intelligent drip irrigation, the system controller is connected with the intelligent drippers and can be used for controlling drip irrigation actions of the intelligent drippers, a micro heat pulse sensor and the target cleaning agent release unit are integrated in the intelligent drippers, the micro heat pulse sensor is configured to be capable of measuring thickness of attachments on the inner flow channel wall surface of the drippers, and the target cleaning agent release unit is configured to release the target cleaning agent to clean attachments when conditions are met. The invention can monitor the blocking condition of the inner part of the dripper in real time and directly and prevent blocking efficiently.

Inventors

LIU YUAN
LI ZHONGYANG
CUI BINGJIAN
HUANG PENGFEI
LIU CHUNCHENG
CUI ERPING
HU CHAO
XIAO FAN

Assignees

中国农业科学院农田灌溉研究所

Dates

Publication Date: 20260505
Application Date: 20260124

Claims (10)

1. Drip irrigation anti-clogging system based on end condition sensing and targeted cleaning, characterized in that the system comprises: the raw water tank is used for containing irrigation raw water; a front-end adaptive processing unit configured to enable purification and microbial kill of irrigation raw water; An irrigation pipe network connected to the front-end adaptive processing unit and configured to be capable of delivering irrigation water to an irrigation area; a plurality of intelligent drippers arranged on the irrigation pipe network and configured to realize intelligent drip irrigation, and And the system controller is connected with the intelligent dripper and can control drip irrigation action of the intelligent dripper.
2. The end condition sensing and targeted cleaning based drip irrigation anti-clogging system of claim 1, further comprising: the fertilizer pump is arranged on the irrigation pipe network and can be used for adding fertilizer/medicine; the filter is arranged on the irrigation pipe network and can filter and purify irrigation water.
3. The drip irrigation anti-blocking system based on end working condition sensing and targeted cleaning according to claim 1, wherein a micro heat pulse sensor and a targeted cleaning agent release unit are integrated in the intelligent dripper; The micro heat pulse sensor is configured to be capable of measuring the thickness of the attachment on the wall surface of the flow passage inside the dripper; and the targeted cleaning agent release unit is configured to release the targeted cleaning agent to clean the attachments when the conditions are met.
4. The drip irrigation anti-clogging system based on end condition sensing and targeted cleaning of claim 3, wherein the micro heat pulse sensor comprises a micro heating element and at least two micro temperature sensing elements, wherein the micro heating element and the micro temperature sensing elements are arranged along the water flow direction; And applying short-time heat pulse to the micro heating element, detecting the time difference and the amplitude change of the arrival of the heat signal by the micro temperature sensing element, and calculating the thickness of the attachment based on the difference of the thermal physical parameters of the attachment, the runner wall material and the water body.
5. The drip irrigation anti-clogging system based on end condition sensing and targeted cleaning of claim 3 wherein the targeted cleaning agent release unit comprises a liquid storage chamber, an electronically openable seal, and a solid or liquid cleaning agent located within the liquid storage chamber; the sealing element is arranged on the liquid storage cavity, and releases solid or liquid cleaning agent in the liquid storage cavity when the sealing element is opened.
6. The drip irrigation anti-clogging system based on end condition sensing and targeted cleaning of claim 3, wherein the intelligent dripper is further integrated with an in-situ water quality monitoring sensor and an energy collection module; the water quality monitoring data are connected with the system controller, and the monitoring data are used for decision optimization of the system controller; The energy collection module is used for obtaining energy from irrigation water flow and supplying power for the internal circuit of the dripper.
7. The drip irrigation anti-clogging system based on end condition sensing and targeted cleaning of claim 1, wherein the front-end adaptive processing unit comprises an electroflocculation module and an ozone oxidation module; The electric flocculation module and the ozone oxidation module are respectively connected with the system controller; and the system controller dynamically optimizes and adjusts the operation parameters of the electric flocculation module and the ozone oxidation module according to the global risk distribution.
8. The drip irrigation anti-clogging system based on end condition sensing and targeted cleaning of claim 5 wherein the electronically openable seal is any one of an electrically dissolvable film, a miniature solenoid valve, and a fusible link.
9. An anti-blocking drip irrigation method based on end working condition sensing and targeted cleaning is characterized by comprising the following steps: Acquiring thickness data of attachments measured by micro heat pulse sensors in all intelligent drippers in real time; calculating a real-time blockage risk index of each intelligent water dropper by using a prediction model based on the thickness data of the attachments; If the risk index of a certain intelligent dripper exceeds a first threshold value, a targeted cleaning agent releasing unit of the intelligent dripper is instructed to release cleaning agent for cleaning attachments; Based on risk index distribution of all intelligent drippers, dynamically calculating optimal cooperative working parameters of the front-end electric flocculation module and the ozone oxidation module by using an optimization algorithm, and executing; And collecting system operation data, and periodically updating the prediction model and the optimization algorithm parameters.
10. The drip irrigation anti-clogging method based on end condition sensing and targeted cleaning of claim 9, wherein the predictive model is a trained LSTM neural network model.

Description

Drip irrigation anti-blocking system and method based on tail end working condition sensing and targeted cleaning Technical Field The invention belongs to the technical field of intelligent agriculture, and particularly relates to a drip irrigation anti-blocking system and method based on terminal working condition sensing and targeted cleaning. Background Drip irrigation technology is the core of water-saving agriculture. However, when using a fertilizer source rich in suspended matters, organic matters and microorganisms such as cultivation wastewater and biogas slurry, the problem of blockage of the dripper is extremely remarkable, and becomes a key bottleneck for limiting the large-scale application of the dripper. The prior anti-blocking technology is mainly divided into three types: 1. and front end filtering treatment, namely removing large particles by adopting physical methods such as multistage screens, cyclone separation and the like. But colloid, microorganism and crystallizable salts cannot be removed, and the filter device itself needs frequent back flushing and has complex operation and maintenance. 2. Chemical cleaning, namely, injecting acid, alkali or oxidant into the system periodically to carry out integral cleaning. The method has the risk of chemical agent residue, corrodes system components, damages soil ecology, and belongs to 'blind washing', and the energy consumption and the medicine consumption are high. 3. Physical flushing and special dripper design, namely, pulse flushing by increasing pipeline pressure or dripping with large flow channels and turbulent flow channels. The method has high energy consumption and limited anti-blocking effect, and the method always has the cost of sacrificing irrigation uniformity. In addition, the prior art has two general defects that firstly, the real-time and direct sensing capability of the blocking process is lacking, the intervention cannot be performed at the initial stage of blocking, secondly, the treatment is separated from the tail end, the front-end treatment process is fixed, the dynamic optimization cannot be performed according to the actual blocking risk of the tail end, and the resource waste or the insufficient treatment is caused. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art described above to some extent. Therefore, the invention aims to provide a drip irrigation anti-blocking system and a drip irrigation anti-blocking method based on end working condition sensing and targeted cleaning, which can monitor blocking conditions inside a drip head in real time and directly, realize the radical transition from passive response blocking to active prediction and accurate prevention and control, dynamically optimize a front-end treatment process through closed loop feedback, and save water, electricity and chemical agents to the greatest extent while preventing blocking efficiently. In order to solve the technical problems, the invention is realized as follows: The embodiment of the invention provides a drip irrigation anti-blocking system based on terminal working condition sensing and targeted cleaning, which comprises the following components: the raw water tank is used for containing irrigation raw water; a front-end adaptive processing unit configured to enable purification and microbial kill of irrigation raw water; An irrigation pipe network connected to the front-end adaptive processing unit and configured to be capable of delivering irrigation water to an irrigation area; a plurality of intelligent drippers arranged on the irrigation pipe network and configured to realize intelligent drip irrigation, and And the system controller is connected with the intelligent dripper and can control drip irrigation action of the intelligent dripper. In addition, the drip irrigation anti-blocking system based on end working condition sensing and targeted cleaning can also have the following additional technical characteristics: in some of these embodiments, the system further comprises: the fertilizer pump is arranged on the irrigation pipe network and can be used for adding fertilizer/medicine; the filter is arranged on the irrigation pipe network and can filter and purify irrigation water. In some embodiments, the intelligent dripper is integrated with a micro heat pulse sensor and a targeted cleaning agent release unit; The micro heat pulse sensor is configured to be capable of measuring the thickness of the attachment on the wall surface of the flow passage inside the dripper; and the targeted cleaning agent release unit is configured to release the targeted cleaning agent to clean the attachments when the conditions are met. In some embodiments, the micro heat pulse sensor comprises one micro heating element and at least two micro temperature sensing elements, wherein the micro heating element and the micro temperature sensing elements are arranged along the water