Alfalfa accounts for about 1/4 of the total area planted in feed crops, it is the main component of feed crops. The development of alfalfa industry can promote the development of aquaculture, processing and trade industries. It not only solves the problem of peasants' employment, but also increases peasants' income, so as to help peasants get rid of poverty and become rich. In conclusion, alfalfa has irreplaceable value and role in agriculture, animal husbandry and economic development. Therefore, it is imperative to select efficient planting and cultivation techniques for alfalfa. The purpose of this paper is to test the alfalfa Seeder Based on High Precision Piezoelectric sensor. An experimental device of Alfalfa Seeder Based on high precision piezoelectric sensor is designed, the device can record the falling of alfalfa seeds in real time. The piezoelectric sensor with precision of 1 mg and 24 ∆Σ modulus converter ADS1256 are used for weighing, the sowing condition of a single alfalfa seed can be distinguished. The sensor uses AMR processor STM32F103C8T6 as the control core, kalman filter algorithm is used to filter the impact of symmetrical weight sensor for seed landing. The simulation and experiment results show that the sensor has high resolution for alfalfa seed sowing and can provide good statistical analysis function. 

Ying Ma. Testing Method of Alfalfa Seeder Based on High Precision Piezoelectric Sensor. International Journal of Multimedia Computing (2020), Vol. 1, Issue 4: 1-13. https://doi.org/10.38007/IJMC.2020.010401.

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