采棉机产量监测系统采集数据的误差分析

为了获取农田作物产量信息，建立产量分布图，在消化、吸收美国AgLeader公司棉花产量监测系统PF3000的基础上，进行了棉花测产收获试验。在收获过程中，对流量传感器、速度传感器等进行了标定，并对产量数据进行了处理。试验结果表明，现场标定可有效提高测产系统流量传感器和速度传感器的测量精度，但田问环境比较复杂，产量数据采集过程中仍会引入一些误差，需对产量数据进行误差处理。误差处理后得到的棉花产量分布图聚类性增强，较为符合实际情况。

Error analysis of yield data from cotton picker yield monitor system

In order to acquire cotton yield information and build yield map, cotton yield monitor system PF3000 of AgLeader Corporation was analyzed and studied, harvest experiments were carried out. During harvesting, cotton flow sensor and speed sensor were calibrated, yield data were processed. The result show: for cotton flow sensor and speed sensor, measurement errors can be reduced by calibration; as a cotton picker is working in a complex environment, errors can be inevitably introduced into the yield data; after processing of these errors, the quality of the generated yield map was better than before.