1. Under the guidance of
Internal guide: A.SRIDEVI
External guide: G.PURNACHANDER RAO
BY
M.PRATHUSHA
D.VEERAMMA
M.APARNA
V.SHABAREESH

2. REMOTE CONTROL APPLIANCES
WHY?
WHEN?
WHERE?
HOW?

3. AIM
The project deals with the development of infrared remote
controller of home appliances using Atmel AT89S52 micro
controller, which is used to regulate the power flowing in the
a.c. load using a remote controller sending signals to the
micro controller Atmel AT89S52 as interrupts.
 The project is an attempt to implementation of few
consumer electronic products mostly at homes.

4. BLOCK DIAGRAM

5. POWER SUPPLY
 REGULATED POWER SUPPLY:

6.  TRANSFORMER:
.

7. SMOOTHING:

8. REGULATORS:

9. Transformer + Rectifier + Smoothing + Regulator

10. PIN DIAGRAM

11. IR INTERFACE DESCRIPTION

12. TSOP1738

13. RELAY
SINGLE POLE CHANGE OVER: DOUBLE POLE CHANGE OVER:

14. ULN2003

15. CIRCUIT DIAGRAM

16. FLOW CHART

17. ADVANTAGES
 signal transmitter have low signal to
noise ratio
The infrared receiver can detected
the signal in distance of 50 feet.
It is very efficient and flexible.

18. RESULT
 The infrared receiver can detected the signal in
distance of 50 feet.
 This project can be identify as a efficiency, easy and
flexible switch control system for the home Appliances.
 Only using press button on one signal remote control
without needed to move over the switch and operate it.
 Step down Transformer used to convert high value of
A.C to low value.
 7805 regulator produces power is 5vD.C
 7812 regulator produces power is 12v D.C

19. FUTURESCOPE
 TV and home theatre manufacturers are releasing applications
that replace your remote and let you control your appliances with a
few swipes of the finger on your multi touch smart phone screen.
 "Appliance manufacturers have been working with utilities and
other technology vendors on pilot projects and, from a technology
perspective, have now demonstrated that it is relatively easy to
produce a home your smart phone”, that small, portable device you
carry with you everywhere you go will take on an even more important
role in your life in the future.

20. CONCLUSION
 The conduction of this project is not only using the combination of infrared
and microcontroller but it also using the power line carrier to transmit the
information.
 The signal transmitted is not strong enough due to own invented data
transmitted via power line. The signal transmitted will easily interrupt by
existing noise in the power line.
 Signal transmitter have low signal to noise ratio, however this project
maybe can well functioning ,if the low noise power line is used the factor
which cause the increment of noise level are the amount of high watt
electrical appliances connected to the power line.

21. REFERENCES
1.www.mitel.databook.com
2. www.atmel.databook.com
3. www.franklin.com
4. www.keil.com
5. www. 8051 freeprojectsinfo.com