Part of Made in India,Design Innovation

Workshop,2015

A  Fresh  New  Experience  in  

Project-­‐Making  and  Learning

PHYSICS INVESTIGATORY PROJECT ON

IR SECURITY ALARMProtect  your  home  intelligently.

An  infrared  security  alarm  system  is  based  on  the  detecBon  of  an  intrusion  caused  by  the  interrupBon  of  an  infrared  light  beam,  which  is  invisible  to  naked  eyes  and  emiEed  by  an  infrared  LED.  This  light  falls  upon  a  matched  photodiode,  which  is  in  line  of  sight  of  the  IR  LED.

In  this  project,  we  will  design  two  separate  circuits:  a  transmiEer  and  a  receiver.  The  

transmiEer  circuit  emits  a  conBnuous  infrared  beam  to  the  photodiode  in  the  receiver  circuit.  We  keep  the  transmiEer  and  receiver  circuits  on  a  plane.  When  an  obstacle  comes  in  between  the  transmiEer  and  the  receiver,  the  buzzer  starts  to  beep.  Even  aMer  the  obstacle  is  removed,  the  buzzer  conBnues  to  beep,  due  to  the  feedback  system  created  using  a  relay.  

Have  a  look  at  our  Project  Kit!

CoolJunk   is   India's   fastest   growing  DIY   (do-­‐it-­‐yourself)   kits   company   focused   on   project-­‐based   learning   in  science,   engineering   and   technology.  Having   20,000   users   in   India,  US,   Singapore,   Middle   East   and   New  Zealand,  the  CoolJunk  kits  are  known   for  quality,  innovaBon   and  high  producBon  value.  CoolJunk  has  been  featured   in   naBonal   and   internaBonal   journals   including   Wallstreet,   Yourstory,   Hindu   Business   Line,  NextBigWhat  and  was  tagged  as  the  coolest  Indian  start-­‐up  in  IAN  Bootcamp-­‐2011.  

For  more  projects  visit  our  website:  CoolJunk  

Tools  and  Components  in  one  box.

Step  by  step  visual  instrucBons

Detailed  experiment  theory

CoolJunkCoolJunkCoolJunk

Follow  us  on: