Abstract
The main aim of this project is to monitor and control the electrical devices using RF technology. This project gives the best solution for electrical power wastage. Also the manual operation is completely eliminated. This project does this application using wireless concept. One of wireless communication system is RF (Radio frequency) communication system as it is very cheap and very easy to implement.
The loads like lights, motors, heaters, power controlling system and also current through the loads can be controlled in this project. We can control all loads at a time from one place (control room) without connecting any physical wire between loads and control room. The RF modules used here are STT-433 MHz Transmitter, STR-433 MHz Receiver, HT640 RF Encoder and HT648 RF Decoder. Switches are provided at the transmitter end, to control the loads which are connected at the receiver side.
The switches are interfaced to the RF transmitter through RF Encoder. The encoder continuously reads the status of the switches, passes the data to the RF transmitter and the transmitter transmits the data. At the receiving end, the RF receiver receives this data, gives it to RF decoder. This decoder converts the single bit data into 8-bit data and presents it to the microcontroller. Now, it is the job of the controller to read the data and perform the corresponding action i.e., switch on/off corresponding load according to the user requirement.
SOFTWARE AND HARDWARE TOOLS:
Software Tools:
- Keil compiler
- Orcad.
- Proload
Hardware Tools:
- Microcontroller AT89S52.
- STR-433 RF receiver and STT-433 RF transmitter
- HT640 RF encoder and HT 648L RF decoder.
- Switches
- TRIAC
Block Diagram
Transmitter Section
Receiver Section
