Søgeresultater - Fang HUI

Automated agricultural vehicles can help alleviate labor intensity concerns, reduce the cost of inputs, and improve the profitability. Significant progress has been made in automatic guidance for agricultural vehicles during the last two decades. More recently, research and development are focused o...

Fuld beskrivelse

Variance process is the key of precision farming. The first step of variance process is sampling and the next is analysis of the data acquired. To analyze data on-line, the spatial analysis model based on Palm-sized PC was developed. This model constitutes part of a farm field information collection...

Fuld beskrivelse

To solve the problems of pulse width modulation (PWM) proportional solenoid valve control mode, such as large current ripple and low control precision, a method of dual PWM was adopted to control the proportional solenoid valve. Here, the dual PWM meant a second modulation was added in one PWM perio...

Fuld beskrivelse

For the purpose of practical application of farmland navigation, we constructed a system of real time kinematic (RTK) to study its positioning accuracy mainly based on Piksi positioning module of Swift Company in the United States. The results showed that single Piksi module point positioning accura...

Fuld beskrivelse

In the process of agricultural sustainable development, diseases and insect pests have always been the focus of attention. Due to the flexibility and convenience, unmanned aerial vehicle (UAV) spray has attracted wide attention in the field of plant protection, and new progress has been made in prev...

Fuld beskrivelse

In order to study the wettability of droplets on the leaves during aerial spraying and its influencing factors, orthogonal test and single factor test were applied to analyze the change of contact angle, which was affected by the location of leaf, foliar fertilizer type and concentration, adjuvant c...

Fuld beskrivelse

Identification of rapeseed varieties by using hyperspectral imaging technique combined with artificial neural network (ANN) was proposed. Hyperspectral images of several rapeseed varieties in range 400-1 000 nm were acquired, and then the principal component analysis (PCA) was performed to select th...

Fuld beskrivelse

Root architecture, which determines the water and nutrient uptake ability of crops, is highly plastic in response to soil environmental changes and different cultivation patterns. Root phenotyping for field-grown crops, especially topological trait extraction, is rarely performed. In this study, an...

Fuld beskrivelse