how can i calculate the AC power used by any appliance like fan with ATMega32

[vishaldevnale]

I am doing my BE Engg project.

Name: "HOME AUTOMATION & POWER MANAGEMENT"

I want calculate the power used by each appliance in ON state. so that we can monitor power used in home. and I can draw it in MATLAB.

I am using ATMega32 MCU in my project to switch ON/OFF each appliance.

I think i have to calculate the current consumption by appliance.
but i don't know how to do it.

if any one tried this please help.

Thank you.

 

[reidintransit]

Re: how can i calculate the AC power used by any appliance like fan?

https://www.consumerreports.org/cro...ergy-monitors/overview/energy-monitors-ov.htm is a review on wattmeters, you could use the cheaper one as a check on your data collected. P = VI, so with known wall voltage you should be able to caclulate power from your current measurements. You can use a hall effect sensor to measure the current.

 

[tpetar]

Re: how can i calculate the AC power used by any appliance like fan?

Use Hall sensors such is A1302 or similar.


Best regards,
Peter

 

[vishaldevnale]

@tpetar
I think Hall sensors are used to only measure the DC current,not AC current. ????????//

 

[tpetar]

@tpetar
I think Hall sensors are used to only measure the DC current,not AC current. ????????//

Its used for both AC and DC.



Best regards,
Peter

:wink: