Metal detecting robot

1. Head office Buildings, OP: 3nd floor, Krishna Reddy P: ICICI ATM, Ramalingapuram, Nellore
www.pvrtechnology.com, E-Mail: pvrieeeprojects@gmail.com, Ph: 81432 71457
METAL DETECTING ROBOT
ABSTRACT
A robot is a mechanical or virtual artificial agent. In practice, it is usually an electro-
mechanical system which, by its appearance or movements, conveys a sense that it
has intent or agency of its own. The word robot can refer to both physical robots
and virtual software agents, but the latter are usually referred to as Robots. There is no
consensus on which machines qualify as robots, but there is general agreement among experts
and the public that robots tend to do some or all of the following: move around, operate a
mechanical arm, sense and manipulate their environment, and exhibit intelligent behavior,
especially behavior which mimics humans or animals.
This project is built on 8051micro controller; this project is housed on a robot base,
which moves forward, this robot base is mounted with an inductive metal detector. When any
metal is detected on its way, then a high signal is sent to the micro controller which in turn
makes a buzzer high and makes the robo stop. L293D is used to drive the motors.
This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage
regulator is used for voltage regulation. Full wave bridge rectifier is used to rectify the ac output
of secondary of 230/12V step down transformer.

2. Head office Buildings, OP: 3nd floor, Krishna Reddy P: ICICI ATM, Ramalingapuram, Nellore
www.pvrtechnology.com, E-Mail: pvrieeeprojects@gmail.com, Ph: 81432 71457
TECHNICAL SPECIFICATIONS:
HARDWARE:
Micro controller : AT89S52
Crystal : 11.0592 MHz
Driver IC : L293D
Metal detector : Inductive
DC motors : Gear motors
Power supply
Transformer : 12V step down
Filter : 1000uf/25V
Voltage Regulator : 7805
SOFTWARE :
Keil microvision
UC flash
proteus
APPLICATIONS:
 Robotics
 Automatic control systems

3. Head office Buildings, OP: 3nd floor, Krishna Reddy P: ICICI ATM, Ramalingapuram, Nellore
www.pvrtechnology.com, E-Mail: pvrieeeprojects@gmail.com, Ph: 81432 71457
BLOCK DIAGRAM:
POWER SUPPLY BLOCKDIAGRAM:
8
0
5
1
Power
Supply
DC Motor1
DC Motor2
L
2
9
3
D
Metal
detector
Buzzer

4. Head office Buildings, OP: 3nd floor, Krishna Reddy P: ICICI ATM, Ramalingapuram, Nellore
www.pvrtechnology.com, E-Mail: pvrieeeprojects@gmail.com, Ph: 81432 71457
Stepdown
Transformer
Filter Regulator OutputBridge
Rectifier