In the present study, feasibility of laboratory detection of damaged seeds in precision planters caused by malfunction of seed metering device was investigated. An acoustic-based intelligent system was developed for detection of damaged pelleted tomato seeds. To improve the Artificial Neural Network (ANN) models a total of 2000 seeds sound signals, 1000 samples for damaged seeds and 1000 for un...

Aiming to solve the problems of poor uniformity seed flow discharge and serious damage traditional straight grooved wheels improve performance air-assisted maize high-speed precision metering devices, a staggering symmetrical spiral feeding wheel with seeds was designed. To explore influence groove inclination angle length staggered feed on discharge, l ρ were used as experimental factors, vari...

This paper aims to solve the problem of high reseeding rates and mis-seeding in rice multi-grain hole direct seeding process. A multi grain cluster air suction type hill seed metering device was developed, its mechanism analyzed. Based on CFD-DEM coupling simulation bench tests, this study explored optimized performance device, carried out adaptability test. The results were as follows: when ne...

To address the problems of high damage rate, low seeding accuracy, and poor generally in process, a general-purpose device was designed this study based on principle mechanical pneumatic combined seeding. The air-blowing-type cleaning seed unloading laid conditions for precise flexible In addition, single-factor experiments were performed seeds (e.g., soybeans, corn, rape-seeds) with different ...

a three-year field experiment (2004-2007) was conducted on a silty clay loam soil at tajarak research station of hamedan to determine proper grain drill for wheat in hamedan dryland areas. in this study, three grain drills including: hamedani barzegar; sahalan kesht; and kesht gostar with wheat seed broadcasting and disking were used. the experiment was a randomized complete block design with f...

To improve the adaptability and precision of slider-hole-wheel seed-metering device to meet requirements sowing, single factor simulation experiments three factors levels orthogonal were carried out based on discrete element method. The rotation speed seeding shaft, shape hole, depth hole set as experiment factors. results showed that qualified rate was highest when shaft 30 r/min, oval, 9 mm. ...

In order to solve the problem that current precision seeder has difficulty in sowing pepper seeds, an air-suction seed metering device based on air supply and quantitative was developed. Combined with its basic structure working principle, CFD-DEM coupling method used for analysis, best combined hole parameters were obtained. A single factor experiment pass rate, replay missed rate as experimen...

In view of the problems inability to continuously adjust seeding rate, small adjustment range, and low precision rice direct seed-metering device, a variable capacity roller-wheel device was designed, fabricated, verified. With method, rate could be adjusted steplessly with high through adjusting mechanism. Meanwhile, theoretical analysis parametric design critical components, such as wheel mec...