| 双板差分冲量式谷物流量传感器设 |
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| 引用本文： | 胡均万,罗锡文,阮欢,陈树人,李耀明.双板差分冲量式谷物流量传感器设[J].农业机械学报,2009,40(4):69-72. |
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| 作者姓名： | 胡均万 罗锡文 阮欢 陈树人 李耀明 |
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| 作者单位： | 1. 华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室,广州,510642
2. 江苏大学现代农业装备与技术省部共建教育部重点实验室,镇江,212013 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家科技支撑计划 |
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| 摘 要： | 设计了一种双板冲量式谷物流量传感器及其差分消振电路,以消除车身振动对测产精度的影响.振动试验表明,在没有谷物输入时联合收获机车身振动导致前后2个检测板产生的2个振动信号是一对共模信号,可通过电路差分的方法消除;差分后传感器的输出电压的信噪比由2.5dB提高到62dB.在零喂入量情况下,振动产生的零点误差小于0.01g/s;在联合收获机正常作业的喂入量范围内(0.5～2kg/s),实验室测量误差小于3%.田间实际测量误差不大于5%.
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| 关 键 词： | 谷物 流量传感器 冲量式 振动信号 双板 差分电路 |
of a Dual-plate Differential Impact-based Yield Sensor |
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| Hu Junwan,Luo Xiwen,Ruan Huan,Chen Shuren,Li Yaoming.of a Dual-plate Differential Impact-based Yield Sensor[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(4):69-72. |
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| Authors: | Hu Junwan Luo Xiwen Ruan Huan Chen Shuren Li Yaoming |
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| Institution: | 1.Key Laboratory of Key Technology on Agricultural Machine and Equipment;Ministry of Education;South China Agricultural University;Guangzhou 510642;China 2.Key Laboratory of Modern Agricultural Equipment and Technology;Jiangsu University;Zhenjiang 212013;China |
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| Abstract: | A dual-plate differential impact-based yield sensor was designed to eliminate the influences of the vibration signal.Two similar parallel plates were mounted in front of the outlet of the combine harvester.The front plate was used to detect the impact of grain out of elevator the harvester as well the vibration.The rear plate was used to detect the vibration only.A differential circuit was used to eliminate the vibration signal of the harvester.The experimental waves showed that the vibration signals of the... |
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| Keywords: | Grain Yield sensor Impact-based Vibration signal Dual-plate Differential circuit |
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