Design and Testing of an Online Fertilizing Amount Detection Device Based on the Moment Balance Principle

Based on the principle of moment balance, this paper designs a fertilizer application amount online detection device, which is mainly composed two major parts: guide mechanism and metering discharging mechanism.Under electromagnetic reversing buffering mechanism, discharged into device falls alternately storage box units mechanism. Once gravity in greater than suction sucker, board automatically opened for discharge, pulse signal accumulated once. Meanwhile, plate driven by commutator to reverse material, then another started metering. In approach, flow can be realized repeatedly guiding incoming fertilizer. According single quality number signals, fertilization calculated real-time.The performance was verified bench test. The test results indicated that: established model quadratic function (R2>0.98), verification error less 3.73% alternating cycle discharge; coefficient determination (R2) root mean square (RMSE) reached 0.992 9.858 respectively, indicating high accuracy is.