malini
Posts: 14
Joined: Thu Feb 11, 2016 11:18 am

any feedback mechanism for relay control?

Tue Apr 12, 2016 4:37 am

Hi!

I'm working on a home automation system. I have used a relay to control the lights from anywhere. But my project guide posed me with a question to which i didnt know the answer.
If we are outside somewhere and are switching on the lights, is there any mechanism to find out if the lights have actually switched on? If the circuit or component is faulty and the lights dont turn on, any way to find out sitting miles away?

Please help.

Thanks.

fruit-uk
Posts: 609
Joined: Wed Aug 06, 2014 4:19 pm
Location: Suffolk, UK

Re: any feedback mechanism for relay control?

Tue Apr 12, 2016 6:22 am

Many such systems do not provide any feedback at all as you say.
Homematic devices, as an example, at least provide an ack that the signal has been received - but that won't tell you if a light bulb has failed.
For that you will need a separate sensor.

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