I'm working with the atmel m90e26 IC. Its energy is numerically pulse_based, but I do not know what the relationship between energy and pulse is in this IC. There's a parameter named MC=3200 imp/kWh in the application note I attached it with the datasheet. Maybe this parameter is related to my problem.
What the relationship between energy and pulse is in this IC?
Once you make an energy meter, it won't directly give you the accurate reading of 3200 impulses per kWh. You need to calibrate each energy meter circuits individually against a standard meter.
For your chip (M90E26), it requires writing to some calibration registers. Check section 3 of your document.
If this calibration process looks too complicated to you, you can go for simpler chips where calibration requires shorting of binary ladder resistors on the voltage sampling channel. Example of such an IC - BL0921.
Your component will pulse 3,200 times, over the course of a KWh. If it's pulsed 1600 times, that's 0.5KWh.
Conversion from KWh to energy is possible, but if you're building an energy meter you don't want to record energy. You want Power over time, measured in KWh... Because that's what they bill you for.
Rational: I have built an almost identical project.
