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Author Topic: PIC 16f 877A based Energy meter  (Read 4174 times)
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shibuv
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« on: March 21, 2008, 03:20:17 15:20 »

Hello

   anybody can help me to find a project pic 16F877A based Energy meter.


makri
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ORIONIX
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« Reply #1 on: March 22, 2008, 05:09:37 05:09 »

Hi man Wink

here there a pic based energy meter:

http://rapidshare.de/files/38894736/MEDIDOR_DE_ENERGIA_ACTIVA_CON_PIC_T-036.pdf.html

is in spanish but, i think that analog hardware is useful, at least to begin..

Bye
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goktug
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« Reply #2 on: March 25, 2008, 09:42:48 09:42 »

http://www.analog.com/en/subCat/0,2879,760%255F790%255F0%255F%255F0%255F,00.html
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darksky
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« Reply #3 on: March 29, 2008, 04:44:47 16:44 »

What current range and are you only interested in kWh?
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hudarsono
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« Reply #4 on: April 02, 2008, 09:26:28 09:26 »

For what purpose are you going to use the energy meter?

If you need a good accuracy to match industrial standart, I think you may want to consider special purpose micro like made by Maxim or ST Electronic.
I ever try build with Maxim, it has very good accuracy and fast performance for data sampling (20KHz) and high resolution ADC. BUild in Real Time Clock, and other module to ease your programming.
And of course with the price for just $7.
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cacheeda
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« Reply #5 on: April 02, 2008, 02:27:23 14:27 »

 Shocked
Dear Hudarsono...

I'am very interestinc what you talk about KWh meter.
Please can you explain me more detail about the project.

Regard's

..cacheeda..
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hudarsono
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« Reply #6 on: April 03, 2008, 11:35:50 11:35 »

Shocked
Dear Hudarsono...

I'am very interestinc what you talk about KWh meter.
Please can you explain me more detail about the project.

Regard's

..cacheeda..

I build digital kwh meter to graduate from my univ. This kwh meter able to sampling in 20000 sample/second.
And able to communicate with PC RS232 asynchronously via data packets. And also has hardware address (like MAC address on PC) so, every kwh meter are distinguishable.
Actually, build kwh meter is very easy right now, since many company have produced specialized IC for such purpose.
I used MAXQ3120 on that project, this IC has build in high resoulution ADC(16bit-Deltasigma), MAC(high-speed multiplier),and RT clock. but now this part has been discontinued. (I don't know why maxim stop produce this).
By the way, u also can use microchip MP3905 with just 0.1% error rating, and price under $2. But this IC is not microcontroller, so you need microcontroller addtion to process the data.

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