A project report on wireless surveillance made by me.

2.  Introduction to surveillance robot
 Need and necessity in present scenario
 Components and design
 Working
 Outcomes
 Conclusion

3.  The importance of surveillance robots is
increasing as security is top priority in today’s
unpredictable society. With the advance in
technology, researchers are able to build more
robust robots to handle hazardous situations and
save several lives.
 A robot is defined as man made mechanical device
which can move by itself, whose motion can be
modeled, sensed , actuated and controlled.

4.  The main purpose of this robot is to be able to
roam around in a given environment while
transmitting back real time data (video) to the
ground station.
 This real time data can then be used by the
controller (human) to move the robot around. The
robot must be compact and self contained with
wireless transmission of data.

5.  The main purpose of the robot we are making is to
provide visual information of hard to access
places, for example a building under a hostage
situation. Hence the main feature of our robot is
an onboard video camera
 Also the robot must be compact and self
contained in the sense it must have an onboard
battery pack and wireless interface to the human
controller

6.  The main components of this robot are:
› 1. Battery
› 2. Controller
› 3. Transmitter
› 4. Receiver
› 5. Motor & Motor driver
› 6. Robot chassis

7.  Battery: A battery is a power source which
supplies required power to an actuator. The battery
supplies the electricity from the chemical reactions
which are occurred in it
We used a 12V, 7.2AH, lead-acid battery as power
source.
 Controller: A controller has a input data obtained
from transmitter. The receiver in the controller
receives the data, and sends control signals to
motor driver.

8. 12V, 7.2AH Lead-acid battery

9.  Transmitter & Receiver: A paired transmitter and receiver
operating at 2.4 Ghz frequency is used. The signals are sent in
form of PWM (pulse width modulation). The controller we used
has 6 operating channels.
 Motor & Motor driver: The motor is a component which
converts electrical energy into mechanical rotational energy. The
motor used in this bot is MY6812 model of 12v, and has a rated
speed of 3000 rpm at no load. The motor driver is an electronic
component which is used to drive the motor according to the
signals received from controller in PWM (Pulse width
modulation) format. The motor driver used is 12v, 20Amp type.

10. MY6812 , 12V MOTOR MOTOR DRIVER

11.  Robot chassis: The robot chassis is prepared from
M1”x1” square cross sectional rods. The rods are
welded to form the chassis frame. The parts such as
motor and wheels are mounted on the chassis with
help of bearings, clamps, and other fastenings. A
flexible coupling is used between the motor and the
axle shaft of wheels to transmit power at slight
misalignment. A self balanced platform for the battery
is made which can keep the battery and camera in
horizontal position irrespective of robot orientation.

12. Robot 3D model and chassis

13.  The power is supplied by the battery. The wireless
controller sends signals to the controller, operating
at 2.4Ghz wireless frequency band, the controller
which in turn sends the control signals in PWM
form to the motor driver, thereby the motor gets
power robot moves forward.

14. An overall look of connections in robot

15.  This robot can be used in military for monitoring
purpose.
 This robot can be used to shoot documentary films,
where humans cannot go easily.
 This robot can be useful in case of natural disasters
such as earth quakes etc.,
 Useful in search and rescue operation
 Provide remote visual basis for planning operations in
military, contruction etc.,