An automatic variable seeding and fertilization control system and a multifunctional seeder

Abstract

The invention discloses an automatic variable seeding and fertilization control system and a multifunctional seeder. The multifunctional seeder includes a power system, a frame, a rotary tillage and ditching system, a seeding system, and a fertilization system. The control system includes a ground wheel, a rotary encoding disc, Servo motor, servo, single-chip microcomputer; single-chip microcomputer writes the program of the functional relationship f (Q)=(n, v) between the seeding rate Q of the planter, the seeding shaft speed n, and the forward speed v of the implement; the ground wheel passes through Rolling in the drainage ditch realizes synchronous advance with the whole machine, real-time measurement of the forward speed v of the ground wheel by rotating the encoder disc, and the pulse signal is sent to the single-chip microcomputer, the single-chip microcomputer calculates the rotation speed of the seeding shaft according to the sowing amount and the forward speed of the implement, and The signal is transmitted to the server, and the server controls the output speed of the DC servo motor by sending pulse signals, and the servo motor directly drives the rotation of the seeding shaft. The overall structure of the invention is reasonable, and the whole system forms a closed-loop control system to meet the requirements of precision and variable sowing and fertilization.

Description

technical field [0001] The invention relates to a control system, in particular to an automatic variable seeding and fertilization control system used on a multifunctional seeder and a multifunctional seeder using the control system, belonging to the field of agricultural power technology. Background technique [0002] Rapeseed is an important oil crop. As the main oil crop in my country, rapeseed oil accounts for about 40% of the edible vegetable oil of Chinese residents. According to statistics, rapeseed is the oil crop with the largest planting area in my country, with a planting area of ​​8,000,000 hectares and a total output of 12 million tons rank first in the world. At present, the self-sufficiency rate of edible oil in my country is less than 40%, and it is necessary to vigorously develop the cultivation of oil crops to solve the national oil supply security crisis. Taking winter rapeseed as an example, the Yangtze River Basin is the main production area of ​​winter ...

AI Technical Summary

Problems solved by technology

The ground wheel has high resistance and is easy to slip. After the rice is harvested and plowed, at least 30% of the soil surface is covered with stubble. Straw and weeds weaken the adhesion of the ground wheel, and the ground wheel slips more seriously, so that the uniformity of sowing cannot be guaranteed; It is also difficult to adjust the seeding rate of precision seeders in production. The traditional method is to manually change the different sprockets after obtaining the seeding shaft speed corresponding to the required seeding rate through manual calculation, which is more complicated, time-consuming and laborious, and this adjustment It is graded, and it is difficult to meet the requirements of precision sowing; the traditional sowing method of rapeseed is to use a fixed seeding rate, but due to the difference in soil fertility in different plots and the difference in the surrounding environment of each plot of land (light, humidity, ventilation) Sex, etc.), differences in sowing seasons, different crop varieties and other reasons cause the amount of sowing required for each field to be different. At this time, the use of traditional sowing methods will easily cause waste of seeds and affect yields.

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