transcript
- 1. Control of Household Appliances using RF Remote Control
Department of Electronics and Communication Engineering
- 2. Introduction Controlling of household electrical appliances
like fan, television, air conditioner or sound systems manually is
sometimes hectic because one has to move to the switch board to
either turn off or on the device. Disable person who cannot walk
also find it difficult to control the devices . Therefore in order
to overcome this problem a RF Based Remote Control system is
proposed and implemented in this project. One advantage of RF over
IR based Remote Control System is that it can operate without any
Line of Sight around the house within its range.
- 3. Objective To built a wireless Remote control to control
Appliances To minimize human effort to control the device. To
handle multiple task using a single remote.
- 4. CIRCUIT DIAGRAM
- 5. How it works The transmitter and receiver is connected
according to the circuit diagram. To built the circuit 434 Mhz
transmitter and receiver pair, encoder and decoder IC pair
(HT12E/HT12D) is used. The transmitter has four input channel and
receiver has also four output channel. According to the input fed
at the transmitter the output will be reflected at the receiver.
The input pattern can be either Logic 0 or 1. These Bits pattern
are used to control the devices to either turn on or turn off.
- 6. Application Table fan Garden light Television Air
Conditioner Electric bulbs
- 7. List of Components RF transmitter and Receiver pair (434
Mhz) Encoder and Decoder pair (HT12E/HT12D) Resistor (33K and 1M
Ohm) Four push button switches Two LEDs and two bulbs Two
transistor (BC547) Two 5V Electronic Relay 15cm Antenna wire
Cathode Ray Oscilloscope (CRO)
- 8. Electrical parameters of the Circuit Voltage:- 5 to 9 Volt
Circuit current:- 13.6 mA Power dissipation:- 122.4mW Input Bits:-
2V for Logic 1 and 0V for logic 0 Output Bits:- 2V for Logic 1 and
0V for logic 0
- 9. Demonstrating video
- 10. Conclusion Controlling of Household Appliances using RF
Remote control is an effort carried by us to make human life more
comfortable and easier. The device is made using RF module of 434
MHz and Encoder and Decoder pair (HT12E/HT12D). In this prototype
we use two LEDs and two Bulbs as output devices which are
controlled by the four switches present in the transmitter. Any
kind of electrical devices can be used in place of these LEDs and
Bulbs like we use here. It can be television, air conditioner, fan
etc. It can control the devices within 100m range.
- 11. Thank You Presented by:- Bhaskar Deka Raja Janmoni Medhi
Sujita Borah Tridib Sharma