20-08-2012, 12:09 PM
IR Transmitter & Receiver
IR Transmitter.doc (Size: 67.5 KB / Downloads: 61)
To monitor the density of the traffic, we will be keeping a few sets of IR transmitter & receiver sensors on the side of the roads. On side IR transmitter will be placed & right opposite to the IR transmitter, an IR receiver will be kept. This set of IR transmitter & receiver will be kept on roads at different intervals.
The IR transmitters are connected to supply, so that they will transmit high signal all the time. The IR receivers are connected to the comparator circuit, to get digital signals. A low power operational amplifier LM324 IC has been used to develop a comparator circuit.