基于称重法的联合收获机测产方法

针对精准农业田间信息获取技术的研究，提出了一种基于称重法的联合收获机收获粮食产量分布信息测量方法。该方法利用传统联合收获机的粮食传输特点，采用了螺旋推进称质量式技术实现了联合收获机产量流量测量，解决了计量装置、动力直接传输和有效信号提取等问题。利用短时小波滤波等方法处理实时流量数据，结合全球定位系统（GPS）定位信息实现了联合收获机粮食流量动态计量以及田间粮食产量分布信息的获取。试验结果表明，台架试验误差小于2%。该方法可以完成粮食产量分布信息的获取工作。

Method of measuring grain-flow of combine harvester based on weighing

For precision agriculture information technology, a method based on the weighing was put forward to get grain yield distribution information. According to grain transmission characteristics of traditional combines, a flow sensor by spiral propulsion and weighing device was studied. The problem of measurement device power directly transmiting and effective signal detecting was solved with this method. Using the wavelet filter short-term treatment with real-time measuring data, combined with GPS positioning information, dynamic measurement of combines grain flow and the grain yield distribution information were realized. Test results show that the bench test error is less than 2%. Test shows that grain yield distritubion information can be gotten by this method.