Development of the peanut precision fertilization control system based on threshold velocity algorithm

In view of the fact that current ground wheel velocimetry peanut precision fertilizer control system cannot solve phenomenon slippage, and signal interference delay loss be excluded by BeiDou positioning velocimetry, a set was designed based on threshold speed algorithm. The used STM32F103ZET6 microcontroller as main controller, touch screen for setting operating parameters such width, type, application amount. algorithm combined with adopted to obtain forward tractor adjust DC drive motor applicator in real time achieve precise application. First, through test, optimal value length N measurement queue determined 3, variation coefficient 4.6%. Then, response performance verified comparative test different fertilization amounts (40 kg/hm2, 50 60 70 kg/hm2) under two acquisition methods (combination Beidou single-point measurement) operation speeds (3 km/h, 4 5 km/h). results showed average distance method 0.58 m, while velocity 0.27 which decreased 0.31 m indicated more accurate field comparison turned out an over 96.08% accuracy rate discharge applied algorithm, effectively avoided inaccurate caused slippage raised at least 1.2% compared using alone. can meet requirements Keywords: peanut, planter, DOI: 10.25165/j.ijabe.20221505.7342 Citation: Fan Y Q, Yu Y, Shang S Gu T Hu R, Diao L S, et al. Development Int J Agric & Biol Eng, 2022; 15(5): 116–122.