Hi everyone, I am new here although have used some of the good info of this forum before.
I want to create this new project and although I have do tones of research I would like to see others opinions.
The idea is to monitor the power consumption of a house.
The method: From what I have research the most appropriate method would be using several Rogowski coils.
http://en.wikipedia.org/wiki/Rogowski_coil
Why this method:
1. you dont need to cut or manipulate power wires of the house, just put the rogowski coil around it.
2. shunts, amperimeters, etc involve risk of manipulation, heat creation, etc
3. should be easy to build 4 or 5 and monitor different wires coming from the main power box of the house.
How to do it.
My idea is to create 4 or 5 circuits as shown above and connect them to a pic with an equal amount of A2D converters. the pic will be in charge of reading the value and then sending it via rs232 to a computer i have 24/7 on. the computer will receive the values and store/create graphs/statistics etc with the data. Also an lcd will show useful information as instantaneous consumption of each power line, totals for days/weeks/month etc etc.
Calibration.
I have a wattmeter which i will use to "calibrate" as far as possible the values received by the pic.
Similar commercial products (which do not fulfil my intentions)
Whole project, really nice but expensive ==>http://www.kondra.com/circuit/circuit.html
http://www.efergy.com/store/product_info.php?products_id=30
What I need:
well the thing that worries me more is building the Rogowski coil.
-Has anyone got experience with it?
-Any suggestions / schematics about it?
-Comments?
-about the op amp, I really dont know which one to use, I am completely new to them. Here is a list of ones I have available, but cant really tell differences:
http://www.electan.com/catalog/advanced_search_result.php?keywords=operacion&x=0&y=0
I am not an electronic expert so any help is welcome.
Thanks for any help and hopefully we can use this post as my project progresses. Ill post info + pics of the project.
thanks
I want to create this new project and although I have do tones of research I would like to see others opinions.
The idea is to monitor the power consumption of a house.
The method: From what I have research the most appropriate method would be using several Rogowski coils.
http://en.wikipedia.org/wiki/Rogowski_coil
Why this method:
1. you dont need to cut or manipulate power wires of the house, just put the rogowski coil around it.
2. shunts, amperimeters, etc involve risk of manipulation, heat creation, etc
3. should be easy to build 4 or 5 and monitor different wires coming from the main power box of the house.
How to do it.
My idea is to create 4 or 5 circuits as shown above and connect them to a pic with an equal amount of A2D converters. the pic will be in charge of reading the value and then sending it via rs232 to a computer i have 24/7 on. the computer will receive the values and store/create graphs/statistics etc with the data. Also an lcd will show useful information as instantaneous consumption of each power line, totals for days/weeks/month etc etc.
Calibration.
I have a wattmeter which i will use to "calibrate" as far as possible the values received by the pic.
Similar commercial products (which do not fulfil my intentions)
Whole project, really nice but expensive ==>http://www.kondra.com/circuit/circuit.html
http://www.efergy.com/store/product_info.php?products_id=30
What I need:
well the thing that worries me more is building the Rogowski coil.
-Has anyone got experience with it?
-Any suggestions / schematics about it?
-Comments?
-about the op amp, I really dont know which one to use, I am completely new to them. Here is a list of ones I have available, but cant really tell differences:
http://www.electan.com/catalog/advanced_search_result.php?keywords=operacion&x=0&y=0
I am not an electronic expert so any help is welcome.
Thanks for any help and hopefully we can use this post as my project progresses. Ill post info + pics of the project.
thanks