基于聚偏二氟乙烯压电薄膜的播种机排种监测系统

为了能够在恶劣的环境中实时自动监测播种机的排种状况,提高监测的可靠性,采用聚偏二氟乙烯（polyvinylidence fluoride,PVDF）压电薄膜传感器将排种器单粒落粒物理量转变成脉冲电压信号,设计了以单片机STC89C52为核心的监测系统,该系统可根据传感器输出的相邻脉冲电压信号的时间间隔与机具的前进速度,计算出播种机的排种量,排种速度,播种面积,漏播率等性能指标。试验台试验结果表明,在排种器每秒落粒数分别为5、8.75、10时,系统对排种量监测精度为95.3%、96%、92.5%,对漏播量监测精度为90.4%、91%、90.2%;田间试验结果表明,在播种机前进速度分别为3、4、5...

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Published in农业工程学报 Vol. 29; no. 23; pp. 15 - 22
Main Author 黄东岩 贾洪雷 祁悦 朱龙图 李洪刚
Format Journal Article
LanguageChinese
Published 吉林大学工程仿生教育部重点实验室，长春 130025 2013
吉林农业大学信息技术学院，长春 130118%吉林大学工程仿生教育部重点实验室,长春,130025%吉林农业大学信息技术学院,长春,130118%吉林省农业机械研究院,长春,130025
Subjects
PVDF压电薄膜
农业机械
单片机
播种机
监测
种子
agricultural machinery
chip microprocessor
播种机
监测
seed
PVDF压电薄膜
planter
PVDF Piezoelectric Film
种子
monitoring
农业机械
单片机
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Summary:为了能够在恶劣的环境中实时自动监测播种机的排种状况,提高监测的可靠性,采用聚偏二氟乙烯（polyvinylidence fluoride,PVDF）压电薄膜传感器将排种器单粒落粒物理量转变成脉冲电压信号,设计了以单片机STC89C52为核心的监测系统,该系统可根据传感器输出的相邻脉冲电压信号的时间间隔与机具的前进速度,计算出播种机的排种量,排种速度,播种面积,漏播率等性能指标。试验台试验结果表明,在排种器每秒落粒数分别为5、8.75、10时,系统对排种量监测精度为95.3%、96%、92.5%,对漏播量监测精度为90.4%、91%、90.2%;田间试验结果表明,在播种机前进速度分别为3、4、5 km/h时,系统对排种量监测精度为95.2%、93.8%、90.4%,对漏播量监测精度为93.3%、93.1%、89.7%。该系统满足排种器实时监测要求,有助于提高播种作业质量。
Bibliography:11-2047/S
Huang Dongyan;Jia Honglei;Qi Yue;Zhu Longtu;Li Honggang;Key Laboratory of Bionics Engineering, Ministry of Education, Jilin Agricultural University;College of Information, Jilin Agricultural University;Jilin Province Agricultural Machinery Research Institute 130025
monitoring; agricultural machinery; seed; planter; PVDF Piezoelectric Film; chip microprocessor
During the process of seeding, once the fault cannot be identified, there will be a large area of missed planting and loss of agricultural production. It is very important to improve the reliability of the seed monitoring system. In this paper, a seed monitoring system was developed based on a PVDF piezoelectric film sensor. The system is simple, with strong applicability. The sensor with the cantilever structure has little effect on the seed coefficient of variation. The system can work in harsh environments. According to the sensor output signal and the forward speed of the machine, the amount of seeding, the speed of seeding, seeding acreage, l
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2013.23.003