播種位置判別及び欠粒補償機能を有するマルチシ-ダの試作研究

(1)本研究进行了一种由计算机控制的精密播种机的研制。研制了一种由光电传感器控制的快门机构、旋转螺线管和步进电机组成的膜上精密播种系统，该系统由孔径和种子作为播种定时的种子输送机构。(2)我们研制了具有Z 80中央处理器的微型计算机和一个用于操作精密机床的程序。计算机使用种植spped和膜孔的直径计算种植时间以将速度下降到膜孔的中心。(3)该系统由光电传感器、步进电机、快门和旋转螺线管组成，光电传感器用于检测种子孔的位置和种子的存在，步进电机用于旋转种子盘，快门用于输送种子，旋转螺线管用于通过计算机移动快门机构。(4)对快门机构的种子输送特性进行了分析。也就是说，具有双百叶窗的机构可以在固定的种植高度下或多或少地对应于种植速度的变化。(5)研制了拖拉机播种系统试验机。该机采用电脑控制的双开闭机构，起垄、覆膜、播种同时进行。该播种装置的特点是具有独立的悬挂机构，悬挂机构采用四连杆机构，可在膜上苗床上灵活移动。(6)在播种性能方面，室内试验和田间试验表明，在理论播种速度范围内，膜孔侵入率为100%，膜孔直径为4cm的膜孔内，可实现播种。

(1) The research carries on a development of a precision planter with a computer control for planting seeds into the center of a hole in plastic mulch-film. We developed the precision planting system for plastic mulch-film cultivation composing of the shutter mechanism being controlled by photosensors, a rotary solenoid and a stepping motor from a hole-diameter and seeds as a seeds-delivery mechanism for planting timing.(2) We developed the micro computer having Z80 CPU and a program for operating a precision plantin. The computer calculates a planting timing to drop speed into a center of a film holes using planting spped and a diameter of film holes.(3) This system composed of photosensors for a detection of hole position and existence of seeds, the stepping motor for rotating a seed plate, the shutter for seeds delivery and the rotary solenoid for moving the shutter mechanism by the computer.(4) The results of characteristic of the seed delivery by shutter mechanisms were analyzed by the portrait. It is to say that the mechanism with the double shutter can correspond to a change of planting speed more or less at fixed planting height.(5) The trial machine of the planting system for tractor was produced. This machine which has a double shutter mechanism controlled by computer is carried out ridging, mulching of films and planting at the same time. The characteristic of the planting device has an independent suspention mechanism with four-bar linkage mechanism for being able to move flexibly on seed-beds of films.(6) On planting performance, it is recognized that the micro computer control system for a plastic mulch-film cultivation can plant seeds into holes of films with a diameter of 4cm on the basic indoor experimental test and field test when this system was operated at an inside range of the theoretical planting speed giving the invasion rate 100% into the holes.