Valve controller based on ZigBee communication technology and control method thereof

Abstract

The invention relates to a valve controller based on ZigBee communication technique and a control method, belonging to the water saving irrigation automatic control system, wherein the valve controller is composed of a adjustable power radio frequency and central control module, a valve control module, a water pressure acquisition feedback module, a project installment debugging module and a power supply unit, the power supply unit has three power supply paths while a 3.3V power supply is normally opened, a 5.5V power supply and a 500mA large current power supply controlling the switch of an electromagnetic valve can be turned off, the control center and the valve control nodes form a ZigBee net communication, the radio frequency is adjustable according to distance. The invention uses a working mode of integral awake and integral dormancy for the valve controller to switch the electromagnetic valve and feedback information. The invention has ultra low power consumption, can realize ZigBee communication after using a battery, and has high reliability, high safety, simple installment, simple debugging and intelligent water quantity measurement. The invention can give full play to the advantages of mulch drip irrigation technique and is beneficial for engineering realization.

Description

Technical field [0001] The invention relates to remote wireless automatic control of water-saving irrigation facilities, in particular to a valve controller and a control method in an automatic control system for under-film drip irrigation. Background technique [0002] The existing under-mulch drip irrigation is a new water-saving technology that combines the advantages of the Israeli drip irrigation technology and the domestic film-covering technology. Water, fertilizers, pesticides, etc. directly act on the root system of the crops through the drip irrigation belt, and with the mulching, the evaporation between the trees is very small, which is very beneficial to the growth and development of the crops. After adopting this technology, it saves water, drips water evenly, and guarantees crop yield increase. It has been popularized and applied, and it has been popularized and applied to more than 8 million mu in Xinjiang. [0003] Under the guiding ideology of agricultural ...

AI Technical Summary

Problems solved by technology

However, due to the staged limitation of the drip irrigation technology promotion process, the current valve controllers are still basically based on the wired network (usually using RS485 bus) and the automatic drip irrigation controller based on the 433MHZ wireless star network. There are still many problems in the actual application process. disadvantages

[0004] The main disadvantages of the wired communication method are: cable trenches need to be dug to bury long-distance cables, the cost is high, the construction process is very complicated, and the construction period is long. Every year after the irrigation season, the ground branch cables need to be recycled and rewired in the next year.

At the same time, the limitations are too large, the adaptability is poor, and maintenance, repair, and expansion are very difficult

The disadvantage of the 433MHZ wireless star communication method is: the adaptability of the star network is poor, if there is a large obstacle or crop between the node and the control center, it will seriously affect the communication of the node, or even fail to communicate

To use battery power, it is necessary to minimize power consumption and maximize battery life

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