农用无人植保机远程控制系统操作终端设计

为进一步提升我国农用无人植保的远程控制性能,实现农作物种植养护可视化管理,针对其远程控制系统操作终端进行了研究设计。根据植保机飞控系统的工作原理及控制执行流程,考虑参数稳定及补偿算法,建立了植保机远程控制模型,对无人植保机控制系统进行软件设计与硬件组件配置,并展开控制系统设计可行性试验仿真。结果表明:以VM Workstation为载体得到友好型的农用无人植保机远程控制系统终端显示平台,可均匀化、及时地显示整个植保机作业的远程监控主要参数,实现无人植保机喷施作业的高效可视化管控。分别设定不同的飞行坡度进行试验,结果表明:两者作业平均高度误差可控制在±6.5cm范围内,满足行业高度检测误差要求,对于农用自动化作业设备优化具有一定的参考意义。

An all optical fiber gas sensor of NH3 and CO based on based on the spectral absorption and harmonic detection

An all optical fiber gas sensor is presented to detect the concentration of NH3 and CO. Based on the spectral absorption, The wideband light source is used to reflect two narrowband spectra by fiber grating of different duty. and piezoelectric ceramics to obtain narrowband output light. The high sensitivity detection can be measured from the second harmonic signal. The two narrowband spectra are corresponding to the absorption spectra of NH3 and CO. Concentration detection are realized by the detection of variety of light intensity. Sensitivity is proved and cost is reduced.