Design and research of a multifunctional fertilizer discharge system based on machine vision

An integrated machine with variable fertilizer discharge and fertilizer monitoring system was designed to monitor fertilizer discharge directly. The machine consists of two parts: variable fertilizer discharge and fertilizer monitoring system. The variable fertilizer discharge part mainly consists of screw fertilizer discharge device and DC motor, etc. The screw fertilizer discharge device is the working element to realize the function of variable fertilizer discharge according to different rotational speeds when working. The fertilizer detection part is composed of a controller and a visual camera, which is responsible for collecting the height information of the remaining fertilizer in the fertilizer tank and outputting the remaining fertilizer to the display after processing by the controller. The dynamic test shows that the integrated machine can realize the functions of variable fertilizer discharge and fertilizer quantity monitoring. The relative maximum error of monitoring is 4.68% and the minimum error is 2.78%.