Tractor Monitoring of Sweet Corn and Dent Corn Harvester

拖拉机对甜玉米和凹痕玉米收割机的监测1)玉米收割机功率要求甜玉米田功率要求为60 ~ 9hp，凹痕玉米田功率要求为80 ~ 10hp。对于配备0.7 ~ 1.0吨玉米斗的机器，要求一台70马力级拖拉机进行田间实践。凹痕玉米田间穗损小于1%。用夹片对甜玉米的籽粒损害很小。2) VTR图像观察设置抓拍辊外围速度为3.0m/s。玉米秸秆在不到0.5秒的时间内就能被粉碎在地上。在收获季节结束时，由于抢断作业，谷物的损失正在增加。3)脱壳试验：在牵引力为1.4 ~ 1.8时，螺旋橡胶辊对甜玉米的脱壳扭矩为0.4 ~ 1.5 kgf-m。脱壳辊外围速度为0.9 ~ 1.3m/s。对于凹痕玉米，钢辊和橡胶辊组合的适当速度被认为是每分钟300到450转。凹痕玉米的抗剥皮能力几乎是甜玉米的三分之一。新研制的拖拉机监测系统采用秸秆传感器、高度传感器、多普勒雷达传感器和料斗液位传感器，对拖拉机的运行状况进行监测。这些传感器在恶劣的野外条件下表现良好。

Tractor Monitoring of Sweet Corn and Dent Corn Harvester1) Power Requirement of Corn PickerPower tequirement at the sweet corn field was 6to9hp and 8to10hp at the dent corn field. For the machine equipped with corn hopper of 0.7to1.0 ton, a 70hp class tractor was requested to conduct the field practice. Field ear loss was lesser then 1%for dent corn. There was very few grain damage of sweetcorn by the use of snapping plates.2) Observation by VTR picturePeripheral speed of a snapping roll was set at 3.0m/s. Corn stalks were able to be shattered to the ground at the moment less than 0.5 sec. At the end of harvest season, grain damage was increasing by a snapping operation.3) Husking TestHusking torque of sweet corn by a helical rubber roll was 0.4 to 1.5 kgf-m at the dracts of 1.4 to 1.8. Peripheral speed of husking roll was 0.9 to 1.3m/s. Proper speed of a steel and rubber roll combination was recognized as 300 to 450 rpm for dent corn. Husking resistance of a dent corn was almost one third of a sweet corn.4) Tractor Monitoring of Corn PickerA newly developed tractor monitoring system was equipped to measure the operating conditions by the use of several sensors as follows : the stalk sensor, the height sencor, Doppler radar sensor and hopper level sensor. These sensors showed good performance at trashy field conditions.