Variable fertilization control system and method

A control system and variable technology, applied in the general control system, control/regulation system, fertilization device, etc., can solve the problems of expensive equipment, poor scalability, difficult operation, etc., and achieve easy popularization and application, high practical value, and convenient operation Effect

Inactive Publication Date: 2009-04-01
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The current variable fertilization controllers are often some independent control modules, or communicate with other modules through serial ports, which have poor scalability and cannot form a complete system
[0010] The variable fertiliza

Method used

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  • Variable fertilization control system and method
  • Variable fertilization control system and method
  • Variable fertilization control system and method

Examples

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Embodiment Construction

[0041] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] Such as figure 1As shown, it is a schematic block diagram of the circuit provided by the present invention. The TMS320LF2407A produced by TI Company is used as the single-chip microcomputer. The single-chip microcomputer is connected with the D / A converter through the SPI interface to generate the control voltage required to control the electro-hydraulic proportional valve. The photoelectric code disc on the fertilizer discharge shaft collects the speed information and sends it to the single-chip microcomputer through the QEP interface as feedback information for closed-loop control. The system expands the CAN bus communication interface through the external receiving and sending chip 82C250, and expands the serial communication interface through the level conversion chip MAX232. A 128*64-pixel liquid crystal display is also e...

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Abstract

The invention relates to the field of an automatic control system. The invention uses a variable fertilization control system which comprises a singlechip used for receiving external storage information, input information, feedback information and communication information and outputting control information and display information after internal arithmetic processing, and the control information is the control towards the fertilizer quantity of a fertilizing machine. The singlechip is connected with an electro-hydraulic proportional valve by a converter. An input end of the electro-hydraulic proportional valve is connected with the converter, and an output end is connected with a hydraulic motor. The output end of the hydraulic motor is connected with a fertilizing shaft of the fertilizing machine. One end of the fertilizing shaft is equipped with a photo-electricity coder, an electrical signal of which is fed back to the singlechip. The singlechip is also connected with an adjustment knob circuit. The electro-hydraulic proportional valve and the adjustment knob circuit are controlled by the singlechip and are used for adjusting the fertilizer quantity of the fertilizing shaft of the fertilizing machine. The integral manual and automatic variable fertilization control system has high practical value, simple structure and convenient operation.

Description

technical field [0001] The invention relates to the field of automatic control systems, in particular to a variable fertilization controller that integrates manual and automatic design, can automatically receive or manually input the amount of fertilization, and utilizes a closed-loop control algorithm in a single-chip microcomputer to accurately realize the output of control signals. Background technique [0002] Precision agriculture is one of the hot fields of agricultural science research in the world in recent years. The meaning of precision agriculture is to finely and accurately adjust various soil and crop management measures according to the specific conditions of each operating unit in the field, and to maximize the optimization of various agricultural inputs in order to obtain the highest yield and maximum economic benefits, while protecting the agricultural ecological environment , Protect land and other agricultural natural resources. Precision agriculture is a...

Claims

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Application Information

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IPC IPC(8): G05B19/042A01C15/00
CPCY02P60/21
Inventor 赵春江黄文倩孟志军陈立平付卫强王秀
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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