Shiqun Dai
YOU?
Author Swipe
View article: A Review of Multiscale Interaction Mechanisms of Wind–Leaf–Droplet Systems in Orchard Spraying
A Review of Multiscale Interaction Mechanisms of Wind–Leaf–Droplet Systems in Orchard Spraying Open
The multiscale interactive system composed of wind, leaves, and droplets serves as a critical dynamic unit in precision orchard spraying. Its coupling mechanisms fundamentally influence pesticide transport pathways, deposition patterns, an…
View article: Quantitative and Correlation Analysis of Pear Leaf Dynamics Under Wind Field Disturbances
Quantitative and Correlation Analysis of Pear Leaf Dynamics Under Wind Field Disturbances Open
In wind-assisted orchard spraying operations, the dynamic response of leaves—manifested through changes in their posture—critically influences droplet deposition on both sides of the leaf surface and the penetration depth into the canopy. …
View article: Study on Spray Deposition Effect of a New High-Clearance Air-Assisted Electrostatic Sprayer
Study on Spray Deposition Effect of a New High-Clearance Air-Assisted Electrostatic Sprayer Open
This study evaluates the performance of a novel high-clearance air-assisted electrostatic sprayer designed for vineyards and investigates the impact of applied voltage on droplet deposition. This sprayer, which uses a new type of air-assis…
View article: A Review of Intelligent Orchard Sprayer Technologies: Perception, Control, and System Integration
A Review of Intelligent Orchard Sprayer Technologies: Perception, Control, and System Integration Open
With the ongoing advancement of global agricultural modernization, intelligent technologies have gained significant attention in agricultural production—particularly in the field of intelligent orchard sprayers, where notable progress has …
View article: A Review of Environmental Sensing Technologies for Targeted Spraying in Orchards
A Review of Environmental Sensing Technologies for Targeted Spraying in Orchards Open
Precision pesticide application is a key focus in orchard management, with targeted spraying serving as a core technology to optimize pesticide delivery and reduce environmental pollution. However, its accurate implementation relies on hig…
View article: Experimental Study of Liquid Jet Atomization and Penetration in Subsonic Crossflows
Experimental Study of Liquid Jet Atomization and Penetration in Subsonic Crossflows Open
This study experimentally investigates the breakup mechanisms and atomization characteristics of liquid jets in subsonic crossflows and develops a penetration depth model that incorporates the incidence angle. Experimental data show that t…
View article: Analytical Methods for Wind-Driven Dynamic Behavior of Pear Leaves (Pyrus pyrifolia)
Analytical Methods for Wind-Driven Dynamic Behavior of Pear Leaves (Pyrus pyrifolia) Open
The fluttering of leaves under wind fields significantly impacts the efficiency and precision of agricultural spraying. However, existing spraying technologies often overlook the complex mechanisms of wind–leaf interactions. This study int…
View article: Development and Experiment of an Air-Assisted Sprayer for Vineyard Pesticide Application
Development and Experiment of an Air-Assisted Sprayer for Vineyard Pesticide Application Open
This paper presents an air-assisted sprayer for vineyard pesticide application. The spraying unit was designed with two symmetrically arranged ports. The airflow velocity distribution of the sprayer was investigated using a combination of …
View article: Development and Evaluation of a Monodisperse Droplet-Generation System for Precision Herbicide Application
Development and Evaluation of a Monodisperse Droplet-Generation System for Precision Herbicide Application Open
Traditional methods of weed control during field management often result in herbicide waste. Precision herbicide application is crucial in agricultural production. This study presents a monodisperse droplet-generation system designed for p…
View article: Spraying performance and deposition characteristics of an improved air-assisted nozzle with induction charging
Spraying performance and deposition characteristics of an improved air-assisted nozzle with induction charging Open
Electrostatic spraying technology can improve the efficiency of pesticide deposition on the surface of leaves and reduce the environmental pollution caused by pesticide drift, which has an important prospect in agricultural pesticide appli…
View article: Effects of sprayer speed, spray distance, and nozzle arrangement angle on low-flow air-assisted spray deposition
Effects of sprayer speed, spray distance, and nozzle arrangement angle on low-flow air-assisted spray deposition Open
Air-assisted spraying technology is widely used in orchard sprayers to disturb canopy leaves and force droplets into the plant canopy to reduce droplet drift and increase spray penetration. A low-flow air-assisted sprayer was developed bas…
View article: Multibody Dynamics Simulation and Vibration Test for High Clearance Orchard Sprayer
Multibody Dynamics Simulation and Vibration Test for High Clearance Orchard Sprayer Open
High clearance sprayer is a high-efficiency pesticide application machine in orchard management. In this paper, operational safety of high clearance sprayers is validated by using finite element simulation and vibration testing. The 3D mod…
View article: Development and Experiment of an Online Measuring System for Spray Deposition
Development and Experiment of an Online Measuring System for Spray Deposition Open
To realize the online evaluation of spray quality, an online measuring system for spray coverage and deposition quality is developed. The measuring theory of spray coverage and deposition quality on an LWS (leaf wetness sensor) surface is …
View article: The Dynamic Evaporation Characteristics of Thiophanate-Methyl Droplets and Their Enhancement under Different Wind Conditions
The Dynamic Evaporation Characteristics of Thiophanate-Methyl Droplets and Their Enhancement under Different Wind Conditions Open
The dynamic evaporation of single droplets was investigated under controlled conditions. In the evaporation process, a droplet was placed on a peach leaf surface. In this research, the relative humidity and temperature were kept constant, …
View article: Experimental Study on the Droplet Size and Charge-to-Mass Ratio of an Air-Assisted Electrostatic Nozzle
Experimental Study on the Droplet Size and Charge-to-Mass Ratio of an Air-Assisted Electrostatic Nozzle Open
An air-assisted electrostatic nozzle uses a combination of air-assisted atomization and electrostatic spray technology. This article optimizes the existing air-assisted electrostatic nozzles in terms of structural design to obtain a higher…