Compendium of Projects Exhibited during the 2nd NLEPC - Vol I

Details of the participant
Name
Kripal Singh
e
i
c
S
n
i
n
o
i
t
a
v
o
n
n
I
n
rsu
u it
Class
IXth
School Name & Address
Govt. High School, Kularan,
Tehsil:Samana, Distt.: Patiala
Name of the Mentor Teacher
Surinder Kumar 'Jindal'
Name of the District & State
Distt. Patiala, Punjab
c
e
P
fo
r
In
s
p
i
re
d
R
e
se
ar
c
h
nd
2 National Level
Exhibition
& Project
Competitions 2012
AUTOMATIC DOOR LIGHT
AND AUDIO SYSTEM
The model in question is of a system which can be
installed at the entry point of any house/shop or any other
establishment. It has a usual door-bell and a switch. When
the visitor presses the door-bell-switch, the door-light gets
turned on. It is accompanied by the audio system getting
turned on. As a result the person sitting inside can talk to
the visitor(standing outside) from the comfort of his/her
room.
This system may be of special use in cases of:
—Patients
—Severely disabled persons
—Severe Cold Seasons
—During the environment of insecurity.
—House occupants being busy when a 'wrong' visitor
knocks.
The door-light and door-bell get turned on only for a
limited period (after the door-bell-switch's pressed). The
door-light does not glow during day. So there is no
wastage of electricity.
Construction (Summary):
The system has, besides usual door-bell/light, switches
etc., some transformers(for stepping-up/down electricity),
Rectifiers(consisting of 4 diodes) to change AC to Splitting
DC, Condensor(for filtering split DC), IC, Some relays,
LDR, Capacitor, Audio amplifier, Speakers, Micprophones,
etc.
With a little addition, this system can also be used to have
a two-way video talk with the visitor.
Colour Photograph of the Project:
Innovation in Science Pursuit for Inspired Research
507