A Greening Irrigation Control System

Abstract

The invention discloses a greening irrigation control system, comprising a flow detection module, a control module and a wireless transmission module. The flow detection module includes a flow sensor arranged at the water outlet of an irrigation pipe, and the detection signal of the flow sensor is sequentially sent to a common mode suppression circuit The common mode suppression circuit uses the principle of differential amplifier to effectively suppress the common mode signal, and the fast amplification and stabilization circuit improves the fast processing ability and good self-stabilizing performance of the flow detection signal, and the filter compensation unit is set to effectively It can effectively reduce the interference of external clutter frequency on flow detection, and avoid system errors caused by signal amplification and drift; the control module includes a controller and an electric regulating valve set on the irrigation pipeline. The controller is used to control the opening of the electric regulating valve and pass the The wireless transmission module remotely transmits the flow detection data to the background management center, which improves the use effect of the greening irrigation control system.

Description

technical field [0001] The invention relates to the technical field of intelligent irrigation control, in particular to a greening irrigation control system. Background technique [0002] With the development of the economy, the requirements for the level of greening projects are getting higher and higher. At the same time, in order to further solve the problems of water resources, energy shortage and labor cost increase, more and more greening projects adopt automatic control irrigation system. Green irrigation water control not only needs to consider the water demand of green plants and the working conditions of the irrigation system when delivering these water, but also needs to consider the additional factors imposed in management due to factors such as uncertainty in plant water demand and risk aversion. of water. For example, impurities in the water during irrigation can easily cause fouling or even blockage of the water pipeline, resulting in a mismatch between the ...

AI Technical Summary

Problems solved by technology

For example, impurities in the water during irrigation can easily cause scaling or even blockage of the water pipeline, resulting in a mismatch between the actual water output and the user's set water output, resulting in insufficient water supply after the irrigation time is reached.

In order to solve this problem, the existing irrigation control system usually installs a flow sensor on the irrigation pipeline to monitor the water output. Usually, the flow velocity of the fluid in the irrigation pipeline is the largest along the centerline of the pipeline, and the flow velocity at the pipe wall is the largest. It tends to zero, but the flow velocity distribution behind the elbow and the valve is relatively complicated, which has very high requirements on the fast processing ability and stability of the flow sensor, and the flow detection signal is subject to large external interference factors. Common mode interference is easy to occur in the system. When the signal amplification drifts, it will directly cause instantaneous and cumulative flow errors, which makes the actual use of the greening irrigation control system unsatisfactory.

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