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3.2 BLOCK DIAGRAM

RRI Panel of Mira Road Station

LED Driver 7218

Microcontroller

Triggers

Description:

R.R.I. panel:

It will display the position of trains, signal aspects and point conditions. The panel contains switches mentioned earlier for performing different operations.

The panel also contains two seven segment display (one for each line) for showing EIM (Expected In Minutes).One speaker is also placed for making necessary appointments.

Micro Controller: Microcontroller will give appropriate signals to the panel whenever an initial trigger is given to it through SPST switch provided on the panel. These switches are placed for initiation of one of the 4 conditions. The microcontroller also accepts signals from the push to on switches placed on the panel when the 2nd, 3rd, and 4th cases are simulated.

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