为了进一步降低马铃薯机械化播种的漏播率,研究多点激光检测托种勺和种薯组合对象的机理,提出了一种种薯排种器托种勺缺种的判别方法。首先,根据排种带上托种勺的几何形状和排列间距,在托种勺的侧面布置多层激光传感器,当托种勺通过检测区域时,根据多层传感器的响应情况判断托种勺上是否缺种。然后,搭建缺种检测试验台验证缺种判别方法,通过对排种速度、种薯质量和排种带振动强度三因素三水平进行回归正交试验,结果表明排种带托种勺缺种的判别原理正确,性能稳定可靠。最后,根据回归正交试验的最优结果,以排种速度为0. 95m/s、单体种薯质量为(40±5) g和排种带中等振动强度的最佳状态进行缺种检测试验,缺种判别成功率可达98. 75%。多点激光检测托种勺缺种的判别方法可为后期设计种薯补种装置实现缺种补种提供技术基础。
In order to further reduce the rate of missed sowing in potato mechanized sowing,the mechanism of multi-point laser detection combined objects of potato seed and seed-storage spoon was studied,and a method to determine the lack of seed for seed tubers was proposed. Firstly,according to the geometry and arrangement spacing of the seeding spoons,a multilayer laser sensor is arranged on the side of the seed spoon. When the seed spoon is passed through the detection area,it is judged whether or not there is a lack of seed on the seed spoon according to the response of the sensor. Then,the missing seed detection platform was set up to verify the method of discriminating seed species,and the regression orthogonal test was conducted on the three levels of seedling speed,seed quality,and seedling vibration intensity. The principle of discrimination is correct and the performance is stable and reliable. Finally,according to the optimal results of the regression orthogonal experiment,seed-deferred test was conducted at the seeding speed of 0. 95 m/s,the mass of seed potato of 40 ± 5 g and the optimum state of medium seedling vibration intensity. The success rate of discrimination can reach 98. 75%. The method of discriminating seed-absorbing seeds by multi-point laser detection can provide a technical basis for designing seed-repairing devices in the later stage to achieve the deficiency of seed replanting.
Journal of Agricultural Mechanization Research
seed inexistence judgment