Low-Cost Vertical Variable-Rate Electric Sprayer with Automatic Spray Distance Control
Description
Datasets used for the performance evaluation of a low-cost vertical variable-rate sprayer with automatic distance control
Files
Steps to reproduce
The dataset was obtained through a series of controlled laboratory experiments designed to evaluate the performance of a prototype low-cost vertical variable-rate electric sprayer equipped with ultrasonic sensors for automatic spray distance control. Data Acquisition: Sensors: Digital ultrasonic distance sensors HC-SR04 (OSSEP Electronics), Digital incremental encoder E40S6-360-3-T-24 (Autonics). Linear actuators: NEMA23 stepper motors (WOTIOM), WD2404 drivers (WOTIOM), custom-made 1:6 planetary gearboxes. Software and Tools Data Acquisition device: myRIO-1900 (National instruments) programmed by LabVIEW-SPI 2021® (National Instruments). Statistical software used for data analysis: R (R CORE TEAM). SPRAY DISTANCE CONTROL PROTOCOLS: Each experimental run involved moving the sprayer through a defined travel distance, recording sensor outputs and actuator positions continuously. Velocity_Profile_Repetitions: The gantry control unit was programmed to maintain a constant speed, while an incremental encoder measured the position and speed in real time. A total of five repetitions were performed. Ultrasonic_Profile_Validation_Data: Ultrasonic sensors were arranged vertically along the spray boom to measure the contour of an artificial barrier, while the incremental encoder. A total of six repetitions were performed. Position_Control_Algorithm_Performance: The position of the spray nozzles and the vertical boom was adjusted automatically based on sensors feedback using the linear actuators controlled by PWM pulses. Prior to experiments, all actuators were initialized to the midpoint of their travel range to maximize adjustment potential in both directions. A total of six repetitions were performed, for each algorithm.
Institutions
- Universidade Estadual de Campinas