In order to solve these problems

an automatic reseeding system based on Linux is designed. The system uses S3C2440 A as core. The system adopts a Hall sensor to get the speed of the seed-metering device. A laser sensor is used to monitor the loss of seeds. The system can monitor inside of the seed-metering device to foresee the loss. An automatic reseeding control algorithm based on overrunning clutch is proposed. Through the control algorithm

the seed-metering device can overrun itself to reseed

an interactive visualization interface is designed to monitor the loss of seeds and give failure warning to the user if the seed-metering device has a breakdown.Experimental result shows that the accuracy rate of the loss and speed monitoring are 100 %

the reseeding rate and the qualified index of seed space both are 100 % while rotating speed is lower than 19. 96 r / min and are 98 %while rotating speed is higher than 19. 96 r / min

the automatic reseeding system can reseed timely and accurately.