基于光电传感器的精密播种机排种性能监测系统的研究

郝向泽; 何旭鹏; 邹翌; 李询; 何瑞银

doi:10.7671/j.issn.1001-411X.2017.01.020

基于光电传感器的精密播种机排种性能监测系统的研究

Research on the sowing performance monitoring system for precision seeders based on photoelectric sensor

摘要

摘要:
目的针对玉米、大豆等作物单粒精密播种过程中出现的漏播、重播以及播种量不精准的问题，设计一种基于光电法的单粒精密播种机排种性能监测系统。
方法采用红外检测装置获取种子下落时的脉冲信号，脉冲信号经单片机处理后统计种子下落时间间隔，并与设定理论时间间隔相比较，计算漏播率、重播率及播种量。以垂直勺轮式排种器为对象，对监测系统进行单粒漏播、重播及播种量监测试验。
结果该监测系统的单粒监测精度达到98.8%；与排种器性能检测试验台架检测结果相比，监测系统的漏播率监测误差小于0.3%，重播率监测误差小于0.6%；播种量监测精度大于94.4%。
结论此监测系统工作稳定，监测精度较高

Abstract:
Objective To design a sowing performance monitoring system based on photoelectric method, so as to solve the problems of miss-seeding, re-seeding and lack of precision in seeding volume during the single grain precision seeding process for crops such as corns and beans.
Method Infrared sensors were applied to capture the pulse signal when the seeds were falling. The signal was processed by a micro-processor, the time gap between successive seed falling was summarized and compared with the designed time gap to obtain the miss-seeding rate, re-seeding rate and seeding volume. Vertical scoop wheel seedmeter was used as the test object to monitor the miss-seeding, re-seeding performance and seeding volume.
Result The monitoring accuracy rate for single grain of this monitoring system reached 98.8%. Compared with the results of the test-bed for testing performance of the seedmeter, the monitoring error of miss-seeding rate was below 0.3%, the monitoring error of re-seeding rate was below 0.6% and the monitoring accuracy rate of seeding volume was above 94.4%.
Conclusion The monitoring system works stably and has high accuracy.

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