how to connect ac sensor to PIC ?

[iugmoh]

hi all,
I need help how to interface an ac motion sensor to PIC, the ac motion sensor I have is consist of three wires two for power and the last for switching to phase power when motion detected .

how I can detect this signal to PIC ?

[sayzer]

Part number of the motion sensor?


Did you search the forum?
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[ardhuru]

The easiest would be to use an optocoupler; you could drive the opto LED thru' a resistor connected to the switched output of the motion sensor, and the isolated output could then drive the PIC.

Regards,

Anand

[iugmoh]

thanks, if one have schematic show the connection for ac sensors with PIC