Abstract：To enhance the speed of agricultural machinery operation and the ability of precision operation and realize row-follow control system, the side-shift row-follow system was developed based on machine vision and hydraulic servo control technology. The developed device could carry different machines to complete different functions. In the whole process, the visual information of crop rows was collected by a PC in real time and transmitted to a slave computer. Based on the information, the core of lower computer processor MC9S12DG128 controlled the movement of device precisely,and the vehicle speed was collected in real time to realize line precision. Not only the tractor steering operation and the frequency on crop ridge damage were reduced, but also the damage to crops was reduced to ensure the normal growth of crops. The mechanism position information was displayed on a monitor to guide drivers to track on rows. The test results show that compared with that without line device, when the speeds of tractor are 0.58, 1.22, 2.19 km?h-1, the accuracies of row-follow with line device are increased by 27.9％, 29.1％, 31.7％,respectively.
2017, Vol. 38 
