Greetings,
I just found this library and I would like to use it to measure current through an ACS712.
The problem I have is I don't know what kind of calibration the setup call requires
emon1.current(1, 111.1); // Current: input pin, calibration.
What is 111.1 ??
Thank you,
MaLi
I guess you are talking about the OpenEnergyMonitor ?
This is the website : http://openenergymonitor.org
This is the github for EmonLib : GitHub - openenergymonitor/EmonLib: Electricity monitoring library - install in Arduino IDE's libraries folder then restart the IDE
This is the page for calibration with the number "111.1" : http://openenergymonitor.org/emon/buildingblocks/calibration
The number is for the "CT", the Current Transformer. I don't know what number you need for ACS712.
Olá Senhores. Estou montando um projeto para medição de um circuito trifásico. No código eu abro 3 instâncias de medição. Quando visualizo no monitor serial, os valores de potência real e fator de potência estão muito diferentes. Estou testando com um motor trifásico, com um amperímetro já da pra ver que o mesmo não está balanceado, porém os valores das potências estão muito fora do normal. Com relação a potência aparente, tensão e corrente estão bem próximos. A alimentação do arduino está pela USB. Há algo que possa estar errado?
// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3
#include "EmonLib.h" // Include Emon Library
EnergyMonitor emon1; // Create an instance
EnergyMonitor emon2; // Create an instance
EnergyMonitor emon3; // Create an instance
void setup()
{
Serial.begin(9600);
emon1.voltage(5, 190, 1.7); // Voltage: input pin, calibration, phase_shift
emon1.current(8, 65); // Current: input pin, calibration.
emon2.voltage(6, 190, 1.7); // Voltage: input pin, calibration, phase_shift
emon2.current(9, 65); // Current: input pin, calibration.
emon3.voltage(7, 190, 1.7); // Voltage: input pin, calibration, phase_shift
emon3.current(10, 65); // Current: input pin, calibration.
}
void loop()
{
Serial.println ("---------------------------------------------------------------------");
emon1.calcVI(20,2000); // Calculate all. No.of half wavelengths (crossings), time-out
emon1.serialprint(); // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
float realPowerL1 = emon1.realPower; //extract Real Power into variable
float apparentPowerL1 = emon1.apparentPower; //extract Apparent Power into variable
float powerFActorL1 = emon1.powerFactor; //extract Power Factor into Variable
float supplyVoltageL1 = emon1.Vrms; //extract Vrms into Variable
float IrmsL1 = emon1.Irms; //extract Irms into Variable
Serial.println ("---------------------------------------------------------------------");
emon2.calcVI(20,2000); // Calculate all. No.of half wavelengths (crossings), time-out
emon2.serialprint(); // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
float realPowerL2 = emon2.realPower; //extract Real Power into variable
float apparentPowerL2 = emon2.apparentPower; //extract Apparent Power into variable
float powerFActorL2 = emon2.powerFactor; //extract Power Factor into Variable
float supplyVoltageL2 = emon2.Vrms; //extract Vrms into Variable
float IrmsL2 = emon2.Irms; //extract Irms into Variable
Serial.println ("---------------------------------------------------------------------");
emon3.calcVI(20,2000); // Calculate all. No.of half wavelengths (crossings), time-out
emon3.serialprint(); // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
float realPowerL3 = emon3.realPower; //extract Real Power into variable
float apparentPowerL3 = emon3.apparentPower; //extract Apparent Power into variable
float powerFActorL3 = emon3.powerFactor; //extract Power Factor into Variable
float supplyVoltageL3 = emon3.Vrms; //extract Vrms into Variable
float IrmsL3 = emon3.Irms; //extract Irms into Variable
Serial.println ("---------------------------------------------------------------------");
}