| 基于CAN总线的谷物产量快速计量系统研发 |
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| 引用本文： | 安晓飞,孟志军,武广伟,李立伟,魏学礼.基于CAN总线的谷物产量快速计量系统研发[J].农业工程学报,2015,31(Z2):262-266. |
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| 作者姓名： | 安晓飞 孟志军 武广伟 李立伟 魏学礼 |
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| 作者单位： | 北京市农林科学院北京农业智能装备技术研究中心, 北京 100097;国家农业智能装备技术研究中心, 北京 100097,北京市农林科学院北京农业智能装备技术研究中心, 北京 100097;国家农业智能装备技术研究中心, 北京 100097,北京市农林科学院北京农业智能装备技术研究中心, 北京 100097;国家农业智能装备技术研究中心, 北京 100097,北京市农林科学院北京农业智能装备技术研究中心, 北京 100097;国家农业智能装备技术研究中心, 北京 100097,北京市农林科学院北京农业智能装备技术研究中心, 北京 100097;国家农业智能装备技术研究中心, 北京 100097 |
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| 基金项目： | National High Technology Program (2012AA101901) |
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| 摘 要： | It depended on the spatial and temporal variation of soil and grain yield to implement precision agriculture.Grain yield monitoring on combine harvester was a cornerstone of precision fertilization.The intelligent grain yield monitoring system with the sensors and DGPS (differential global positioning system), which was loaded on the combine harvester, could get the different blocks’ yield and produce the yield map.In this study, a new grain yield monitoring system based on CAN bus technology was developed.The system consisted of sensor unit, data acquisition unit, GPS module and LCD (liquid crystal display) terminal.The grain yield data were collected by the grain flow sensor, and processed by the signal condition circuit.And then the grain yield data and GPS signal were transmitted to the control unit by CAN bus.With the algorithm of grain yield conversion, all the collected data including real-time grain yield, harvest area and average grain yield were displayed on the LCD terminal.Flow sensor unit included grain yield flow sensor, force impact plate and mounting bracket.The sensor frame was mounted at the top of clean grain elevator of combine harvester.When the elevator paddles rotated around the sprocket, grain was propelled towards a flat impact plate.As grain momentum was lost in the subsequent collision with the impact plate, an effective force was measured by the impact parallel-beam load cell.Along with the calibration relationship between measured force and mass flow rate, the output of the impact parallel-beam load cell could indicate the flow rate of grain yield.Data acquisition unit included power conversion circuit, sensor signal acquisition circuit, analog-to-digital conversion circuit and CAN communication circuit.It could fulfill data acquisition function, CAN communication function and interrupt handling function.LCD terminal had the function of sensor detection, the function of GPS information collection, parameter calibration, data display and storage.It could display the real-time grain yield, total yield, average yield and harvest area.In order to evaluate the grain yield monitoring system, 3 experiments which included static performance experiment of grain yield flow sensor, platform test experiment of grain yield monitoring system and dynamic performance experiment on combine harvester were carried out.The result of platform test experiment showed that the system error between predicted yield and measured yield was less than 3% and the system could avoid the effect of vibration from the platform effectively.Field dynamic experiment showed that the system error was less than 5%.Both the experimental results indicated that the grain yield monitoring system could satisfy the need of practical production.
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| 收稿时间： | 2015/10/1 0:00:00 |
Development of grain yield monitoring system based on CAN bus technology |
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| An Xiaofei,Meng Zhijun,Wu Guangwei,Li Liwei and Wei Xueli.Development of grain yield monitoring system based on CAN bus technology[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(Z2):262-266. |
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| Authors: | An Xiaofei Meng Zhijun Wu Guangwei Li Liwei and Wei Xueli |
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| Institution: | Beijing Research Center for Intelligent Agricultural Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China,Beijing Research Center for Intelligent Agricultural Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China,Beijing Research Center for Intelligent Agricultural Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China,Beijing Research Center for Intelligent Agricultural Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China and Beijing Research Center for Intelligent Agricultural Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China |
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| Abstract: | |
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| Keywords: | agriculture crops yield yield flow sensor CAN bus precision agriculture |
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