Research and Development of Potato Seeder Control System to Accelerate Reseeding

At present，potato sowing is difficult to meet needs of simple，efficient，uniform，accurate and combined sowing operation，missing sowing can not be solved in process of sowing，and potato sowing still rely on manual supplementary sowing.In order to solve these problems，an integrated potato planter was developed based on single-chip microcomputer control.Control principle of seeding and accelerating reseeding was described，and mathematical model between movement path of seeder and seed discharging as well as reseeding was established.Furthermore，related designs were given on main hardware circuit and software flow chart.The designed seeder operated at speed of 2-10 km/h，and plant spacing was set at 300 mm.Results of field experiment showed that: rate of missed seeding was ≤1.24%，average value of plant spacing was 307.5 mm，and coefficient of variation of plant spacing was 2.41%.All indexes met national technical standards of potato seeder，and also met requirement of high efficiency，precision and no manual assistant sowing in process of potato sowing.