Autonomous Security Guard Robot

LIJOOSH C (No. 28)

RICHARD O (No. 50)

Presented By

Guided By

RIYAZ K KAP ECE

Aim

The aim of this project is to build a working

prototype of a sentry / patrol robot.

The robot is capable of patrolling an area

without human interaction while providing

feedback as to the state of its surroundings.

It monitor and report the status of his guarding

area, patrol inside a designated area and report

intruders.

Motivation

Alternative to a human security personnel.

Robots can do tasks faster and safer.

Reduce security breaches prevalent in human

security systems.

Reduce security expenses in the long run.

Project Objectives

Easy to Use Autonomous. Simple and intuitive. Able to work in the dark. Battery in the robot is easy to recharge.

Safe Protect users from shock. Circuits enclosed within a sealed case. Battery is protected from shorts. Environmentally safe.

Operating Environment

Operates mainly in an indoor environment.

Navigates on a flat horizontal surface, which limits

its outdoor usage.

Designed to handle obstacles based on proximity.

Operates without any human present to issue

instructions to it.

Sonar sensor

XNOR Gate

PIR Sensors/Mic

Buzzer

H-BridgeMicrocontroller

Power Supply

Gear Motors

Block Diagram

Circuit diagram

Work Done

Generated and simulated the circuit using Proteus Professional.

Wired the circuit and checked. Designed PCB layout using PCB Artist. Fabricated PCB and created the hardware part. Designed and made the mechanical part. Programmed the microcontroller. Integrated all the parts.

Result

Most aspects of the robot functioned as intended. Mechanical performance of the system was as

expected. The robot was able to navigate on its own but not

all obstacles was avoided. Susceptible to false alarms intermittently. Working of PIR was irregular.

Final Product

Conclusion

Objectives of the project not met in its entirety. Obstacle avoidance was highly dependent on the

surface and texture of the obstacle. Microphone inputs were very sensitive to

background noise. Presence of sunlight interferes with the working

of the PIR sensor making it ineffective during the day.

Future Works

Obstacle detection by image processing techniques.

Continuous monitoring. Connection to a central control station. Fire and water leakage sensors. Use of pan-tilt zoom camera or IP camera.

Thanks…