联合收获机籽粒损失监测传感器性能标定试验

设计了由升降平台、升降驱动装置、给料装置、传感器安装平台等构成的籽粒损失监测传感器标定试验台；选取饱满小麦籽粒、不饱满小麦籽粒和不同长度茎秆等物料运用标定试验台对籽粒损失监测传感器在不同安装高度及不同安装角度情况下进行实验室内标定.室内试验表明,针对含水率不同的小麦样品籽粒损失监测传感器的测量误差能限制在4.8％以内；根据室内试验标定结果确定了籽粒损失监测传感器在监测夹带损失时的安装位置,田间试验表明,夹带损失最大监测误差为3.40％.

Calibration Experiment of Grain Loss Monitoring Sensor in Combine Harvester

In order to test the performance of grain loss monitoring sensor and search for the best installed location, a calibration test-bench which composed of lifting platform, lifting driving mechanism, feeding device and the sensor installation platform was designed. Full wheat grain, blighted wheat grain and stalks with different lengths were selected as calibration materials to test the performance of grain loss monitoring sensors in different installation heights and installation angles. The laboratory tests showed that for different moisture wheat samples, the measurement error of grain loss monitoring sensor could be limited to less than 4.8%. The installed location of the grain loss monitoring sensor was determined when monitoring the separate loss according to laboratory calibration results. The field tests showed that the average separate loss monitoring error was 3.40%.