基于电机直驱的玉米勺轮排种器排种质量监测系统

doi:10.13733/j.jcam.issn.2095-5553.2023.08.021

摘要/Abstract

摘要： 针对非直驱式玉米勺轮排种器存在排种量、播种粒距监测精度低等问题，设计一种基于步进电机直驱的玉米勺轮排种器排种质量监测系统。该系统以STM32为核心，采用光电传感器对排种量进行检测，基于光电脉冲信号的相邻落种时间间隔实现对播种粒距的监测。台架试验结果表明：在3~8km/h设定车速下，排种量监测准确率平均值为98.55%，标准差为1.4%；与分析相邻落种运动过程得到的播种粒距理论值相比，播种粒距监测误差绝对值的平均值为2.84cm，标准差为3.66cm，播种粒距监测合格指数大于97.1%，满足实际排种质量监测需求，可为玉米排种质量监测技术提供参考。

关键词: 玉米, 勺轮排种器, 电机直驱, 播种粒距, 监测系统, 种植机械

Abstract: In order to solve the problem of the low accuracy of monitoring metering quantity and seeding spacing of nondirectdrive maize scoopwheel metering device, a monitoring system of maize scoopwheel metering device based on stepping motor direct driving was designed. The system took STM32 as the core, used a photoelectric sensor to detect metering quantity and realized the monitoring of the seeding spacing based on the adjacent time interval of photoelectric pulse signals . The bench test showed that the average accuracy of monitoring metering quantity was 98.55% with a standard deviation of 1.4% at the set vehicle speed of 3-8km/h. Compared with the theoretical value of seeding spacing obtained by analyzing the movement process of adjacent seeds, the average absolute value of the error of monitoring seeding spacing was 2.84cm with a standard deviation of 3.66cm, and the qualified index of seeding spacing was greater than 97.1%, which met the actual requirements of monitoring metering quality. The results of the study can provide a reference for the monitoring technology of maize metering quality.

Key words: maize, scoopwheel metering, motor direct driving, seeding spacing, monitoring system, plant machinery

中图分类号:

S223.2

张炫炫, 谭彧, 张丽娜, 蒋易宇, 张然. 基于电机直驱的玉米勺轮排种器排种质量监测系统[J]. 中国农机化学报, 2023, 44(8): 155-161.

Zhang Xuanxuan, Tan Yu, Zhang Lina, Jiang Yiyu, Zhang Ran. Monitoring system for scoopwheel maize metering performance based on motor direct driving[J]. Journal of Chinese Agricultural Mechanization, 2023, 44(8): 155-161.

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