基于移动4G的株距自适应玉米收割机优化设计

为了提高玉米收割机的株距的自适应能力、降低漏采率、提升工作效率,设计了一种新的株距自适应玉米收割机,大大提高了玉米收割机的作业精度和效率。依据移动4G信号的传播特性,设计了玉米株距实时测量系统,针对中国4G现场测试环境,研究提出了一种电波传播特性测量与建模方法,结合高性能测试仪器和虚拟仪器技术设计构建了3.5GHz测量系统。测量得到的株距量由A/D转换器转换为数字信号,再由单片机进行处理,对执行末端发出指令,调整玉米收割机割台分禾器的间距,从而可以对不同株距的玉米进行收割作业。对设计的玉米收割机进行测试发现:其株距自适应能力较好,可以随株距的变化自动调整分禾器间距,玉米穗的漏采率和破碎率较低,符合高精度作业玉米收割机的设计要求,为玉米自动化收割机械装置的研究提供了较有价值的参考。

Optimization Design for Corn Harvester of Adaptive Spacing Based on Mobile 4 G

In order to improve the adaptive ability of row spacing in corn harvester, reduce the loss rate, improve work efficiency,it designs a new adaptive spacing in the rows of corn harvester, and it greatly improves the working precision and production efficiency of corn harvester.According to the propagation characteristics of 4 G mobile signal, it designs the spacing corn real-time measurement system, for Chinese 4 G field test environment.Combined with the high perform-ance testing instrument and virtual instrument technology, the study proposes a method of measurement and modeling of radio propagation characteristics, and it constructs the 3.5 GHz measurement system.Amount of spacing measurements it obtains by the A/D converter conversion to digital signals, and then processes by the microcontroller, spacing on end ef-fector issued a directive, the adjustment of corn harvester header divider, which can different spacing in the rows of corn harvesting operations.On the design of the corn harvester was measured, the spacing of adaptive ability is good, which can be change with spacing automatically adjust the divider between.And the corn leakage recovery rate and the broken rate is low, in line with the design requirements of high precision operation,the research offers a more valuable reference for the study of corn automation mechanical harvesting device.