Orchard pipeline precise fertilizer injection control device and control method

Abstract

The present invention discloses an orchard pipeline precise fertilizer injection control device and a control method. The device comprises a pressure transmitter, a signal conditioning circuit, a single chip microcomputer, a display device, a solenoid valve driving circuit, a solenoid valve, a keyboard circuit and a power supply circuit. The power supply circuit, the signal conditioning circuit, the keyboard circuit, the display device and the solenoid valve driving circuit are connected to the single chip microcomputer. The power supply is also connected to the pressure transmitter and the solenoid valve. The solenoid valve is also connected to the solenoid valve driving circuit. The signal conditioning circuit is connected to the pressure transmitter. Through presetting the fertilizer injection amount of pipeline fertilizer injection, when the pileline fertilizer injection is carried out, a pressure sensor collects the pressure in a liquid fertilizer pipeline and transmits the pressure to the single chip microcomputer, according to the pipeline liquid fertilizer pressure and a preset fertilizer injection amount, the single chip microcomputer calculates the needed fertilizer injection time through a software program, the opening duration time of the solenoid valve is controlled according to the fertilizer injection time, when the fertilizer injection amount reaches a desired value, a fertilizer injection gun is closed automatically, and the precise fertilizer injection of fruit trees is realized.

Description

technical field [0001] The invention relates to the research field of fertilizer injection in orchards, in particular to a control device and control method for precise fertilizer injection in orchard pipelines. Background technique [0002] The fruit tree is fertilized by the root, and the liquid fertilizer can reach the root of the fruit tree quickly, and the root system of the fruit tree absorbs quickly, reduces waste, and improves the utilization rate of fertilizer. Using pipelines to inject fertilizers in orchards can reduce labor intensity to a greater extent and solve the problem of rural labor shortage. [0003] However, in the existing pipeline fertilizer injection technology, there is a problem of inaccurate fertilizer injection, which is mainly manifested in: 1) The time of fertilizer injection depends entirely on the manual control of the operator, and the duration of fertilizer injection by different operators is different, making The amount of fertilizer injec...

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Problems solved by technology

[0003] However, in the existing pipeline fertilizer injection technology, there is a problem of inaccurate fertilizer injection, which is mainly manifested in: 1) The time of fertilizer injection depends entirely on the manual control of the operator, and the duration of fertilizer injection by different operators is different, making The amount of fertilizer injected through the fertilizer injection gun is different; 2) Even if the duration of fertilizer injection is the same, when injecting fertilizer in different areas of the pipeline, the amount of fertilizer injected will change due to the difference in pressure in the pipeline; 3) During the fertilizer injection in the pipeline When the number of operators changes, it will also affect the stability of fertilizer injection

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