Simulation System of Wheat Broad Width Intelligent Precision Seeding

Abstract

In order to overcome the deficiencies of miss-seeding and random seeding in the current ground wheel driven seeding,a set of intelligent control simulation system for wheat precision seeding was studied and built.The system adopts self-designed seeding apparatus and intelligent control method to complete broad width and precision seeding of wheat. The system uses keys to set parameters such as seeding rate, thousand-grain weight and seeding space, etc.According to the measured value of the operating speed of the planter by the encoder, the speed of the DC motor is dynamically adjusted by controlling the pulse width modulation (PWM) of the chip, so as to achieve the purpose of changing the operating speed of the seeder and keeping the seeding rate and seed spacing unchanged. The DC motor is poweredby tractor’s own battery to drive seeding, and all information is displayed on the LCD.The simulation test of the rotation speed measurement of the seeding shaft shows that there is only slighterror caused by vibration between the corresponding theoretical and actual rotation speeds of the seeding shaft for different operating speeds when the intelligent control system of wide planting of wheat is used for seeding, which can meet the requirements of precision seeding.