Variable rate fertilization adjustment device and control method of same

A technology for regulating devices and variables, applied in fertilization methods, fertilization devices, program control, etc., can solve the problems of expensive hydraulic equipment, complicated control process, poor precision, etc., and achieve the effect of simple structure, high control precision and low cost

Active Publication Date: 2017-07-14
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Domestic variable fertilization machinery is still in the stage of experimental research. Most of the existing variable mechanisms use hydraulic pressure to control the outer grooved wheel type fertilizer device. By controlling the speed or opening (effective working length) of the outer grooved wheel, the amount of fertilizer discharge can be changed. , the control process is complicated, the accuracy is poor and the hydraulic equipment is expensive, so it is difficult to promote it in a large scale in my country

Method used

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  • Variable rate fertilization adjustment device and control method of same
  • Variable rate fertilization adjustment device and control method of same
  • Variable rate fertilization adjustment device and control method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 As shown, the overall structure of the present invention consists of fertilizer box 1, frame 2, graphite shaft sleeve 7, fertilizer discharge shaft 6, deceleration mechanism 8, shaft coupling 9, stepper motor 10, leading screw 12, paddle 13, row Several parts such as fertilizer box 14, outer sheave 15 are formed.

[0048] Fertilizer box 1, deceleration mechanism 8 and stepping motor 10 are fixed on the frame side wall 2. The fertilizer discharge shaft 6 is connected to the side wall of the frame through the graphite shaft sleeve 7, which neither affects the rotation of the fertilizer discharge shaft nor the axial movement. The lead screw 12 is installed parallel to the fertilizer discharge shaft 6, so that the plectrum 13 can drive the fertilizer discharge shaft to move axially when it moves axially along the lead screw. The fertilizer discharge box 14 is arranged below the fertilizer tank; the outer sheave 15 is fixed on the fertilizer discharge shaf...

Embodiment 2

[0065] Based on the structure described in embodiment 1, a kind of variable fertilization control method is proposed, and the specific steps are as follows:

[0066] Step 1: Fill the fertilizer tank with fertilizer, start the tractor, start the control system, and import the variable fertilization prescription map into the single-chip control system.

[0067] Step 2: Obtain the coordinates of the current location through the GPS positioning module, and combine the prescription map to obtain information on the amount of fertilizer required for the soil at the current location. The rotation speed detection module detects the current rotation speed of the fertilizer discharge shaft in real time, and the infrared ranging sensor monitors the current opening L of the outer sheave, and feeds back to the stepping motor control system.

[0068] Step 3: The control system calculates the expected outer sheave opening L0 based on the amount of fertilizer required at the current location a...

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Abstract

The invention relates to a variable rate fertilization adjustment device and a control method of same. The adjustment device includes a fertilizer box, a machine frame, a fertilization executing apparatus, and an opening degree adjustment apparatus. The fertilization executing apparatus includes a plurality of fertilizer ejectors, an outer groove wheel, and a fertilizer ejection shaft. The fertilizer ejectors are disposed below the fertilizer box in an array and are linked to work, thus uniformly performing variable adjustment on fertilization quantity; the opening degree adjustment apparatus includes a speed reducing mechanism, a lead screw nut mechanism, a paddle mechanism, a stepping motor and a control system thereof. During operation, the stepping motor drives a lead screw to rotate with combination of the speed reducing mechanism, so that the paddle on the lead screw moves axially along the lead screw and triggers the fertilizer ejection shaft to move axially, thereby further changing opening degree of the outer groove wheel to adjust fertilizer ejection quantity. In the device, a planetary wheel speed reducing mechanism is added, so that torque is increased and load on the stepping motor is reduced, and so that accurate control on the axial movement of the fertilizer ejection shaft is achieved by means of rotation of the stepping motor, thereby increasing dynamic precision of the variable rate fertilization adjustment device.

Description

[0001] (1) Technical field [0002] The invention relates to a variable variable fertilization regulating device and a control method thereof, belonging to the technical field of agricultural machinery. [0003] (2) Background technology [0004] Variable fertilization is a key link in precision agriculture. In the stage of rice-wheat-based fertilizer application, the traditional method of fertilization is to apply the same amount of fertilizer in a large area of ​​the planting area, but the soil fertility of different plots is different, and the application of the same dose of fertilizer will cause a lot of waste, resulting in burning seeds and seedlings. There will also be a series of problems such as environmental pollution. Therefore, the fertilization method of variable fertilization should be adopted according to the needs of different plots, different soils and different crop growth environments. [0005] Foreign variable fertilization machines are mostly aimed at liqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C15/16A01C21/00G05B19/042
CPCA01C15/16A01C21/00G05B19/042Y02P60/21
Inventor 王金星戚武振刘双喜王玉亮王钦祥孙林林张宏建
Owner SHANDONG AGRICULTURAL UNIVERSITY
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