Fecha de publicación: 08/12/2017 Fuente: Wipo "precision agriculture" The utility model discloses an accurate sowing system based on big dipper satellite includes ecu, and when the seeder carries out the farm work, big dipper satellite module will treat that operation field positioning information transmitted gives ecu, and ecu follows the seeder traveling speed that speedtransmitter acquireed, still through the seed discharging opening flow measurement sensor, acquires the flow of seeding to handle speed and seeding flow, reach the real -time condition of seeding of seeder. When flow and the traveling speed of seeding are against regulation, according to preset's demarcation volume adjustment seeding flow, or through seeding actuating system adjustment traveling speed, finally reach the purpose of accurate seeding. The cause the utility model discloses a broadcast and set up laser emitter and laser receiver in the seed case, set up laser receiver and laser emitter's height through control, can master the seed surplus of broadcasting in the seed case, improved the reliability of seeder operation.