Wireless Status Indicator


It is a wire-free communication project.We can reduce our time elapsed in the inspection of status of devices without going near to them.The project has two parts;transmitter & receiver.

 

Transmitter- 

Terminals P1 toP4 are used to connect the phase supply of the devices with the common earthing terminal.Whenever any device is switched-ON,a phase current runs in the circuit through P1/P2/P3/P4.  Optocouplor IC(MCT2E) converts this phase signal into DC value & provides to the encoder IC(HT12E) where the corresponding signal is modulated with an RF-module(TX-433) and transmitted via an antenna upto a long distance. Hence,upto four phase signal can be connected with the project simultaneuosly.

Transmitter using transformer

Receiver-

The transmitted signal is demodulated here and the corresponding red LEDs will blink to show the status of devices.A blue led shows the signal receiption & it must be blinked for correct result.If the blue led is not blinked,then the receiver circuit is out of coverage of the transmitter & result may be incorrect.

Receiver


Project Board


Wireless Status Indicator Project

 

 

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