Wall painting robot

Project Title

Wall painting robot

Project Area of Specialization RoboticsProject Summary

The primary aim of the project is to design, develop and implement Automatic Wall Painting Robot which helps to achieve low cost painting equipment. Despite the advances in robotics and its wide spreading applications, interior wall painting has shared little in research activities. The painting chemicals can cause hazards to the human painters such as eye and respiratory system problems. Also the nature of painting procedure that requires repeated work and hand rising makes it time and effort consuming. When construction workers and robots are properly integrated in building tasks, the whole construction process can be better managed and savings in human labor and timing are obtained as a consequence. In addition, it would offer the opportunity to reduce or eliminate human exposure to difficult and hazardous environments, which would solve most of the problems connected with safety when many activities occur at the same time. These factors motivate the development of an automated robotic painting system.

Project Objectives

Wall painting is a repetitive, exhausting and hazardous process which makes it an ideal case for automation. Painting had been automated in automotive industry but not yet for the construction industry. There is a strong need for a mobile robot that can move to paint interior walls of residential buildings. In this project, the conceptual design of an autonomous wall painting robot is consisting of an arm that scans the walls vertically and is fitted on a mobile robot base to give the lateral feed motion to cover the painting area will be implemented. The design objective is to satisfy the criteria of simplicity, low weight, low cost and fast painting time. Ultrasonic sensors are fitted on the arm and the mobile base to adjust the motion limits and maneuver in the room area. A control system is designed to guide the arm motion and plan the mobile base motion

Project Implementation Method

The implementation of Paint Spraying equipment consists of a frame that is used for mounting the components such as D.C motor, Battery, electronic timer unit, solenoid valves, flow control valve and spur gear arrangement.The IR transmitter and IR receiver circuit is used to sense the material. It is fixed to the frame stand with a suitable arrangement. The spray gun is fixed to the frame stand to spray paint in the material. The spray gun painting operation is controlled by the flow control valve, single acting solenoid valve and Microcontroller unit. This high pass filter is used to eliminate the high-frequency signal due to external unwanted signal. In our circuit, simple R-C high pass filter circuit is used. the experimental setup of the spray gun in which the silver colored box is the spray gun. The board covered with the plastic box is the IR sensor circuit since it is covered with the plastic box in order to avoid unnecessary detection of walls on the sides. In Microcontroller Setup The 12V signal from the battery is given to the power supply unit where it gets regulated to 5V. The 5V signal is given to the microcontroller unit. Once the supply is ON, LCD gets initialized. The microcontroller sets to setting mode and the moving and painting distance is given as input to the microcontroller. The microcontroller (by using microcontroller program) “ON” the relay -1 (conveyor Motor stop-Connected to port-p2.0)) and “ON” relay-2 & 3 (solenoid valve is ON-Painting Operation) for given seconds and once again “OFF” the relay-1 and operation continues. Reset switch is connected to pin number 32 of the microcontroller unit. When the IR receiver receives the signal, the conveyor belt moves and spray gun goes to ON condition. If the conveyor belt stops then spray gun goes to OFF condition.

Benefits of the Project

Despite the advances in robotics and its wide spreading applications, painting is also considered to be a difficult process as it also has to paint the whole building. To make this work easier and safer and also to reduce the number of laborers automation in painting was introduced. The automation for painting the exterior wall in buildings has been proposed. Above all these the interior wall painting has shared little in research activities. The painting chemicals can cause hazards to the painters such as eye and respiratory system problems. Also, the nature of the painting procedure that requires repeated work and hand rising makes it time and effort consuming. These factors motivate the development of an automated robotic painting system. This project aims to develop an interior wall painting robot.

Technical Details of Final Deliverable

The construction of the automatic wall painting robot consists of:
1. Mobile platform
? Frame stand
? Wheel

? DC motor
? Battery
? Control unit
2. Spray gun mount
? Solenoid valve
? Flow control valve
? Spray gun

Frame Stand and Wheel

The frame stand is steel welded in such a way that it can carry the whole equipment. The steels are welded strongly in a welding laboratory with an idea to carry the entire robot

Dc motor

DC motors are part of the electric motors using DC power as an energy source. These devices transform electrical energy into mechanical energy. The basic principle of DC motors is the same as electric motors in general, the magnetic interaction between the rotor and the stator that will generate spin.

Battery

In order to provide supply to the controller unit battery is used. Lead acid battery is used in this project. The lead-acid battery is a rechargeable battery. Despite having a very low energy-to-weight ratio.

Unit control 

The microcontroller unit is used to control the DC motors and the movement of spray gun fitted on the conveyor belt

Solenoid Valve
A solenoid is an electrical device that converts electrical energy into straight-line motion and force. These are also used to operate a mechanical operation which in turn operates the valve mechanism. 

Flow control valve 

A flow control valve is used to control the ejaculation of the paint.

Spry gun

The best quality spry gun is used for smoothly painting the walls 

Final Deliverable of the Project Hardware SystemCore Industry ManufacturingOther IndustriesCore Technology RoboticsOther TechnologiesSustainable Development Goals Industry, Innovation and InfrastructureRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	38000
Motor	Equipment	4	4000	16000
Aurdino	Equipment	1	1000	1000
Spry gun	Equipment	1	11000	11000
Other	Miscellaneous	50	200	10000