Design and Fabrication of Weed Detection and Elimination Robot
Weed control has been a troublesome issue since decades as they are the biggest enemy of crops, causing the yield loss of nearly 20-40% annually. In Pakistan, the farming communities mostly use cultural and chemical techniques, such as herbicides, for weed removal which may harm the actual crop
2025-06-28 16:26:23 - Adil Khan
Design and Fabrication of Weed Detection and Elimination Robot
Project Area of Specialization Mechanical EngineeringProject SummaryWeed control has been a troublesome issue since decades as they are the biggest enemy of crops, causing the yield loss of nearly 20-40% annually. In Pakistan, the farming communities mostly use cultural and chemical techniques, such as herbicides, for weed removal which may harm the
actual crop as well as pollute the environment. The purpose of the project is to avoid these issues and develop an efficient automated system that can safely remove the unwanted plants. For this we have designed a four wheel robot. The project involves two phases; weed identification and weed removal. Weed identification will be done
using image processing. Respbarry pi is used for the identification of weed. A webcam is attached on the pi to detect the weed. To elimnate the weed precise spraying mechanism will be used. The mechanism will have three-axis (x, y, z). Nozzel is attched along z-axis for precise spraying.
To develop a system that can identify and locate weeds in crops using real-time image processing.
To develop a system that can kill the weeds autonomously.
- Raspberry Pi
Raspberry pi used for image processing. Dataset first trained on PC and then deploy on raspberry pi.
- Arduino
Arduino Nano used for the motion of robot, and controlled motion of mechanism.
- Literature review
To get information about the design of robot.
- Design of Robot
Four-wheel vehicle is designed for the detection and elimination of weed.
- Literature review for detection of weeds
To get information about previous methods and techniques used for detection of weed.
- Literature review for elimination of weeds
To get information about previous methods and techniques used for elimination of weed.
- DC Motors
DC motors are used to drive the vehicle and mechanisms to kill the weed.
- Design of Mechanism
Three-axis mechanism is designed to kill the weed using sprayer. The coordinates of mechanism are (x, y, z).
- Webcam
For Realtime image processing webcam is used.
- Battery
To provide power to system 12V battery is used. And to provide power to Arduino three 4V batteries are used.
- Threaded Rods
For motion of mechanism threaded rods are used.
- Pump
To push herbicides from tank to nozzle.
Benefits of the ProjectBy selective spray mechanism, the production of the yield will increase.
Fully autonomous robot helps in saving the labor cost.
Less use of herbicides will save the cost and gives us a sustainable growth of the crop.
There would be no health hazard as that for the case of excessive spray of herbicides.
The aim of the project is to detect the weed and eliminate it. The deliverable product would include a micro-controller (Respbarry pi) which have the capbility to detect the weed on the basis of image processing. Image processing is carried on wheat crop.
Morover, it will also consists of DC Motors that will drive the robot and also three-axis weed elimination mechanism.Mechanism move on threaded rods.
Webcam is used for detection of weed.
Final Deliverable of the Project HW/SW integrated systemCore Industry AgricultureOther IndustriesCore Technology RoboticsOther Technologies Artificial Intelligence(AI)Sustainable Development Goals Zero Hunger, Good Health and Well-Being for People, Affordable and Clean Energy, Industry, Innovation and Infrastructure, Climate Action, Life on LandRequired Resources| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Total in (Rs) | 74830 | |||
| Frame | Equipment | 1 | 5000 | 5000 |
| Wheels | Equipment | 4 | 1000 | 4000 |
| DC Motors | Equipment | 3 | 1000 | 3000 |
| Window DC motor | Equipment | 3 | 3450 | 10350 |
| Bearings | Equipment | 6 | 120 | 720 |
| Threaded rods | Equipment | 3 | 1200 | 3600 |
| Rods | Equipment | 2 | 700 | 1400 |
| Resbarry pi | Equipment | 1 | 28000 | 28000 |
| Webcam | Equipment | 1 | 3000 | 3000 |
| Battery 12V | Equipment | 1 | 1500 | 1500 |
| Battery 4V | Equipment | 3 | 120 | 360 |
| Arduino | Equipment | 1 | 800 | 800 |
| Electronic Accessories | Equipment | 1 | 3000 | 3000 |
| Sprayer Tank | Equipment | 1 | 300 | 300 |
| Pump and Pipe | Equipment | 1 | 1800 | 1800 |
| Frame Accessories | Miscellaneous | 1 | 8000 | 8000 |