MJLorton Solar Power and Electronic Measurement Equipment Forum

General Category => General Discussion => Topic started by: circuitous on June 08, 2014, 08:56:23 PM

Title: AC current monitoring approaches
Post by: circuitous on June 08, 2014, 08:56:23 PM
In a current project I need a micro-controller to measure AC line voltage and current, and if possible to identify spikes and brown outs.
I have tried a few approaches and documented them.

ACS-756 from Allegro:
https://www.youtube.com/watch?v=GSf5keC3LoE (https://www.youtube.com/watch?v=GSf5keC3LoE)

ADE 7913 from Analog Devices:
https://www.youtube.com/watch?v=8G1-qkVeutw (https://www.youtube.com/watch?v=8G1-qkVeutw)

I am starting on the CS5464 from Cirrus.  I should finish that up in a couple of days.

Does anyone have a particular favorite device?

If you have any suggested approaches or other feedback, I'd be glad to hear it!

Title: Re: AC current monitoring approaches
Post by: TechJunkie on June 13, 2014, 01:02:48 PM
This is what I use. Seems to do a great job. The software is pretty good also!

http://www.extech.com/instruments/product.asp?catid=48&prodid=595

Title: Re: AC current monitoring approaches
Post by: TechJunkie on June 13, 2014, 01:05:37 PM
Oh yes, forgot to add the WattsUp Pro. This has been a handy device although the software has room for improvment.

https://www.wattsupmeters.com/secure/products.php?pn=0

Title: Re: AC current monitoring approaches
Post by: circuitous on June 13, 2014, 01:29:54 PM
This is what I use. Seems to do a great job. The software is pretty good also!

http://www.extech.com/instruments/product.asp?catid=48&prodid=595


Although those are interesting products, I need a micro-controller to measure AC line voltage and current. 
I have a couple of current clamp meters (as seen in the first video, one old junk and a decent new one) that work well enough.  The goal is to have current measurement integrated into my project. 

I expect that across the forum, members have used various approaches to integrate mains current measurement directly into their boards.  I am hoping those members can enlighten me on their approaches, as well as things to watch out for, or how to mitigate problems.

Title: Re: AC current monitoring approaches
Post by: TechJunkie on June 13, 2014, 05:37:07 PM
This is what I use. Seems to do a great job. The software is pretty good also!

http://www.extech.com/instruments/product.asp?catid=48&prodid=595


Although those are interesting products, I need a micro-controller to measure AC line voltage and current. 
I have a couple of current clamp meters (as seen in the first video, one old junk and a decent new one) that work well enough.  The goal is to have current measurement integrated into my project. 

I expect that across the forum, members have used various approaches to integrate mains current measurement directly into their boards.  I am hoping those members can enlighten me on their approaches, as well as things to watch out for, or how to mitigate problems.

Ahh, I see.