Design of an Intelligent Security Robot for
Collision Free Navigation Applications
Abstract:
Robotics industry has replaced human efforts gradually in performing rather difficult
tasks. A very pertinent aspect of an intelligent security robot is to reach the goal safely by
avoiding unknown obstacles in an unknown environment. In this paper we have developed an
embedded C program code to design an intelligent robot which can overcome the obstacles
coming in its way. We have made use of three infrared sensors to detect the obstacles via the IR
communication technique. The IR transmitter sends out infrared radiation in a direction which
consequently bounces back on coming across the surface of an object and thereafter is picked up
by the IR receiver. Authors have applied a multi sensor integration technique to sense the
obstacles using an LED based IR transmitter and receiver module integrated with the 8051 micro
controller which permits collision free navigation of robots.
1 CRORE PROJECTS, No. 214, 215, 2nd Floor, Raahat Plaza, Vadapalani, Chennai - 26
PH - +91 44 42032818 HP - +91 9751800789 | +91 72999 51536 | +91 77081 50152
Website - www.1croreprojects.com E - 1croreprojects@gmail.com
Existing system
Proposed system
Now a day’s protection and monitoring is done In this advanced technology, robots used for
by mankind
patrolling and high security area instead of
human being
Drawbacks of existing system:
Advantages of proposed system:
 Human interference needed
 Cost effective
 Not easy to trace
 No need of human interference
 Not suitable for unpredictable area.
 Portable elsewhere
 More suitable for unpredicted area
1 CRORE PROJECTS, No. 214, 215, 2nd Floor, Raahat Plaza, Vadapalani, Chennai - 26
PH - +91 44 42032818 HP - +91 9751800789 | +91 72999 51536 | +91 77081 50152
Website - www.1croreprojects.com E - 1croreprojects@gmail.com
Working principle:
This project consists of IR based ultrasonic sensor, LCD, CCTV camera, 2 axis robot
interfaced with AT89C51 microcontroller. The robot will move elsewhere without help of
human being. By using ultrasonic sensor it has easy to avoid the collisions and obstacle
avoidance. 3 ultrasonic sensors Used to identify the direction of movement of the robot. CCTV
camera used to trace the human being in the particular area. All the operations controlled by
microcontroller
1 CRORE PROJECTS, No. 214, 215, 2nd Floor, Raahat Plaza, Vadapalani, Chennai - 26
PH - +91 44 42032818 HP - +91 9751800789 | +91 72999 51536 | +91 77081 50152
Website - www.1croreprojects.com E - 1croreprojects@gmail.com
Block diagram:
Battery
CCTV
With power supply
Motor
Driver
Ultrasonic
sensor
PIC16877A
Ultrasonic
sensor
Motor
Driver
2-Axis
Robot
mechanism
Motor
Driver
Ultrasonic
sensor
LCD
Receiver section:
1 CRORE PROJECTS, No. 214, 215, 2nd Floor, Raahat Plaza, Vadapalani, Chennai - 26
PH - +91 44 42032818 HP - +91 9751800789 | +91 72999 51536 | +91 77081 50152
Website - www.1croreprojects.com E - 1croreprojects@gmail.com
Hardware requirements:
 2 Axis Robot
 CCTV camera
 AT89C51 microcontroller
 Ultrasonic sensor
 4-Relay board
 LCD
 Battery
Software requirements:
 Embedded C
 Keil compiler
Application:
 It is used for surveillance purpose in unpredictable area.
 Used in Military oriented inspection application.
1 CRORE PROJECTS, No. 214, 215, 2nd Floor, Raahat Plaza, Vadapalani, Chennai - 26
PH - +91 44 42032818 HP - +91 9751800789 | +91 72999 51536 | +91 77081 50152
Website - www.1croreprojects.com E - 1croreprojects@gmail.com