University of Tehran Press Iranian Journal of Biosystem Engineering 2008-4803 47 2 2016 08 22 Investigation of vacuum planter performance based on video processing and Kalman filter Investigation of vacuum planter performance based on video processing and Kalman filter 363 373 58786 10.22059/ijbse.2016.58786 FA Journal Article 2015 06 02 The most widely used machine for precision sowing of cucumber and sorghum seeds is vacuum type. The performance and distribution accuracy of the vacuum type metering unit is of great importance. Therefore, the experiments at three pressures of 25, 35, 45 mbar and two level of forward speed 3 to 4.5 km/h and 6 to 8.5 km/h were conducted and multiple planting, feeding quality and miss planting were measured. In the meantime, a motion model is constructed using Kalman filter to track and draw seed trajectories. Based on the analysis of seeds falling trajectories, it was found that the there was a close relation between of seeds falling trajectories and seeding uniformity. The optimum levels of vacuum pressure and forward speed for precision seeding were found to be 35 mbar, 3 to 4.5 km/h, and 35 mbar, 3 to 4.5 km/h for cucumber and sorghum seeds, respectively. Finally, it was perceived that with increasing forward speed at inappropriate vacuum pressure, percentage of deviated seeds from straight movement was increased, which it decreased seed distribution uniformity. The most widely used machine for precision sowing of cucumber and sorghum seeds is vacuum type. The performance and distribution accuracy of the vacuum type metering unit is of great importance. Therefore, the experiments at three pressures of 25, 35, 45 mbar and two level of forward speed 3 to 4.5 km/h and 6 to 8.5 km/h were conducted and multiple planting, feeding quality and miss planting were measured. In the meantime, a motion model is constructed using Kalman filter to track and draw seed trajectories. Based on the analysis of seeds falling trajectories, it was found that the there was a close relation between of seeds falling trajectories and seeding uniformity. The optimum levels of vacuum pressure and forward speed for precision seeding were found to be 35 mbar, 3 to 4.5 km/h, and 35 mbar, 3 to 4.5 km/h for cucumber and sorghum seeds, respectively. Finally, it was perceived that with increasing forward speed at inappropriate vacuum pressure, percentage of deviated seeds from straight movement was increased, which it decreased seed distribution uniformity. https://ijbse.ut.ac.ir/article_58786_79bf1e66623fe1f850a177dc9491cd8e.pdf