SCT-013-030 current monitor sensor

[maglo18]

@chatainsim said:

SCT-013-030

I create custom energy monitor and use mysesnors to send data to server.
http://forum.mysensors.org/topic/703/custom-power-meter/4
My final sketch

#include <SPI.h>
#include <MySensor.h>  
#include "EmonLib.h"             // Include Emon Library
EnergyMonitor emon1;             // Create an instance
EnergyMonitor emon2;             // Create an instance
EnergyMonitor emon3;             // Create an instance
#define CHILD_ID 0  
#define CHILD_ID2 1  
#define CHILD_ID3 2  
MySensor gw;
unsigned long lastSend;
unsigned long SEND_FREQUENCY = 10000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.
unsigned long lastSend2;
unsigned long SEND_FREQUENCY2 = 300000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.

MyMessage realPowerMsg(CHILD_ID,V_VAR1);
MyMessage apparentPowerMsg(CHILD_ID,V_VAR2);
MyMessage powerFActorMsg(CHILD_ID,V_VAR3);
MyMessage supplyVoltageMsg(CHILD_ID,V_VAR4);
MyMessage IrmsMsg(CHILD_ID,V_VAR5);

MyMessage realPowerMsg2(CHILD_ID2,V_VAR1);
MyMessage apparentPowerMsg2(CHILD_ID2,V_VAR2);
MyMessage powerFActorMsg2(CHILD_ID2,V_VAR3);
MyMessage supplyVoltageMsg2(CHILD_ID2,V_VAR4);
MyMessage IrmsMsg2(CHILD_ID2,V_VAR5);

MyMessage realPowerMsg3(CHILD_ID3,V_VAR1);
MyMessage apparentPowerMsg3(CHILD_ID3,V_VAR2);
MyMessage powerFActorMsg3(CHILD_ID3,V_VAR3);
MyMessage supplyVoltageMsg3(CHILD_ID3,V_VAR4);
MyMessage IrmsMsg3(CHILD_ID3,V_VAR5);

void setup()
{  
  gw.begin(NULL, 4, false, 0);
  Serial.begin(115200); // opens serial port, sets data rate to 9600 bps
  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Energy Meter x 3v2", "1.2");
  // Register this device as power sensor
  gw.present(CHILD_ID, S_POWER);
  gw.present(CHILD_ID2, S_POWER);
  gw.present(CHILD_ID3, S_POWER);

  emon1.voltage(A3, 116.26, 1.7);  // Voltage: input pin, calibration, phase_shift
  emon1.current(A0, 29.0);       // Current: input pin, calibration.
  emon2.voltage(A4, 116.66, 1.7);  // Voltage: input pin, calibration, phase_shift
  emon2.current(A1, 29.0);       // Current: input pin, calibration.
  emon3.voltage(A5, 115.91, 1.7);  // Voltage: input pin, calibration, phase_shift
  emon3.current(A2, 29.0);       // Current: input pin, calibration.
}

void loop()
{
  gw.process();
  unsigned long now = millis();
  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)
  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)
  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)

  bool sendTime = now - lastSend > SEND_FREQUENCY;
  if (sendTime) { 

    float realPower       = emon1.realPower;        //extract Real Power into variable
    float realPower2       = emon2.realPower;        //extract Real Power into variable
    float realPower3       = emon3.realPower;        //extract Real Power into variable

    if(realPower > 0 && realPower < 10000){
    gw.send(realPowerMsg.set(realPower,1));
    }
    if(realPower2 > 0 && realPower2 < 10000){
    gw.send(realPowerMsg2.set(realPower2,1));
    }
    if(realPower3 > 0 && realPower3 < 10000){
    gw.send(realPowerMsg3.set(realPower3,1));
    }
    lastSend = now;
  }

  bool sendTime2 = now - lastSend2 > SEND_FREQUENCY2;
  if(sendTime2){

    float apparentPower   = emon1.apparentPower;    //extract Apparent Power into variable
    float powerFactor     = emon1.powerFactor;      //extract Power Factor into Variable
    float supplyVoltage   = emon1.Vrms;             //extract Vrms into Variable
    float Irms            = emon1.Irms;             //extract Irms into Variable
    
    float apparentPower2   = emon2.apparentPower;    //extract Apparent Power into variable
    float powerFactor2     = emon2.powerFactor;      //extract Power Factor into Variable
    float supplyVoltage2   = emon2.Vrms;             //extract Vrms into Variable
    float Irms2            = emon2.Irms;             //extract Irms into Variable
    
    float apparentPower3   = emon3.apparentPower;    //extract Apparent Power into variable
    float powerFactor3     = emon3.powerFactor;      //extract Power Factor into Variable
    float supplyVoltage3   = emon3.Vrms;             //extract Vrms into Variable
    float Irms3            = emon3.Irms;             //extract Irms into Variable


    if(apparentPower > 0 && apparentPower < 10000){
    gw.send(apparentPowerMsg.set(apparentPower,1));
    }
    if(powerFactor > 0 && powerFactor < 10000){
    gw.send(powerFActorMsg.set(powerFactor,1));
    }
    if(supplyVoltage > 0 && supplyVoltage < 1000){
    gw.send(supplyVoltageMsg.set(supplyVoltage,1));
    }
    if(Irms > 0 && Irms < 1000){   
    gw.send(IrmsMsg.set(Irms,1));
    }

    if(apparentPower2 > 0 && apparentPower2 < 10000){
    gw.send(apparentPowerMsg2.set(apparentPower2,1));
    }
    if(powerFactor2 > 0 && powerFactor2 < 10000){
    gw.send(powerFActorMsg2.set(powerFactor2,1));
    }
    if(supplyVoltage2 > 0 && supplyVoltage2 < 1000){
    gw.send(supplyVoltageMsg2.set(supplyVoltage2,1));
    }
    if(Irms2 > 0 && Irms2 < 1000){   
    gw.send(IrmsMsg2.set(Irms2,1));
    }

    if(apparentPower3 > 0 && apparentPower3 < 10000){
    gw.send(apparentPowerMsg3.set(apparentPower3,1));
    }
    if(powerFactor3 > 0 && powerFactor3 < 10000){
    gw.send(powerFActorMsg3.set(powerFactor3,1));
    }
    if(supplyVoltage3 > 0 && supplyVoltage3 < 1000){
    gw.send(supplyVoltageMsg3.set(supplyVoltage3,1));
    }
    if(Irms3 > 0 && Irms3 < 1000){   
    gw.send(IrmsMsg3.set(Irms3,1));
    }
    lastSend2 = now;
  }
}

[chatainsim]

Thank you for the code.
Can you tell me how to wire the sensor ?
I have only two wire connected to the jack.

Thanks !

[korttoma]

This post is deleted!

[epierre]

this code is for three, first one is wired on A3 / A0, second A4/A1 and third on A5/A2

[chatainsim]

Yes, I've understand this but how is it possible to wire on A3 and A0 with only two wires ? Where is connected the VCC ?
I've used this : http://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-energy-monitor-measuring-current-only

[maglo18]

@maglo18 said:

A3 is from transformer and A0 is from CT sensor

Voltage input http://openenergymonitor.org/emon/buildingblocks/measuring-voltage-with-an-acac-power-adapter
CT input http://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-energy-monitor-measuring-current-only

I have 3 x voltage input and 3 x ct input.

[chatainsim]

Ahhh ! Ok.
That why there is A3 and A0 in use !

I'll digg into the voltage input to know how it's working.
Thank you.

[chatainsim]

I've change the code to only use A0 for CT sensor.
It's not plug in the cable, it's for testing.
Here is the output in arduino serial console :

sensor started, id 2
send: 2-2-0-0 s=255,c=0,t=17,pt=0,l=5,st=ok:1.4.1
send: 2-2-0-0 s=255,c=3,t=6,pt=1,l=1,st=ok:0
read: 2-1-0 s=255,c=3,t=6,pt=1,l=1:0
read: 2-1-0 s=255,c=3,t=6,pt=1,l=1:0
read: 0-0-2 s=255,c=3,t=6,pt=0,l=1:M
send: 2-2-0-0 s=255,c=3,t=11,pt=0,l=12,st=ok:Energy Meter
send: 2-2-0-0 s=255,c=3,t=12,pt=0,l=3,st=ok:2.0
send: 2-2-0-0 s=0,c=0,t=13,pt=0,l=5,st=ok:1.4.1
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 69.60 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 62.07 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 55.65 nan 
0.00 0.00 0.00 48.57 nan 
0.00 0.00 0.00 40.78 nan 
0.00 0.00 0.00 35.21 nan 
0.00 0.00 0.00 30.80 nan 
0.00 0.00 0.00 24.84 nan 
0.00 0.00 0.00 19.95 nan 
0.00 0.00 0.00 16.46 nan 
send: 2-2-0-0 s=0,c=1,t=24,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=25,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=26,pt=7,l=5,st=ok:NAN
send: 2-2-0-0 s=0,c=1,t=27,pt=7,l=5,st=fail:0.0
send: 2-2-0-0 s=0,c=1,t=28,pt=7,l=5,st=fail:16.5
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 13.53 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 11.34 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 9.73 nan 
0.00 0.00 0.00 8.11 nan 
0.00 0.00 0.00 6.84 nan 
0.00 0.00 0.00 5.72 nan 
0.00 0.00 0.00 4.71 nan 
0.00 0.00 0.00 3.90 nan 
0.00 0.00 0.00 3.18 nan 
0.00 0.00 0.00 2.61 nan 
send: 2-2-0-0 s=0,c=1,t=24,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=25,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=26,pt=7,l=5,st=ok:NAN
send: 2-2-0-0 s=0,c=1,t=27,pt=7,l=5,st=fail:0.0
send: 2-2-0-0 s=0,c=1,t=28,pt=7,l=5,st=fail:2.6
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 2.22 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 1.97 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 1.76 nan 
0.00 0.00 0.00 1.62 nan 
0.00 0.00 0.00 1.51 nan 
0.00 0.00 0.00 1.40 nan 
0.00 0.00 0.00 1.26 nan 
0.00 0.00 0.00 1.13 nan 
0.00 0.00 0.00 0.99 nan 
0.00 0.00 0.00 0.85 nan 
send: 2-2-0-0 s=0,c=1,t=24,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=25,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=26,pt=7,l=5,st=ok:NAN
send: 2-2-0-0 s=0,c=1,t=27,pt=7,l=5,st=fail:0.0
send: 2-2-0-0 s=0,c=1,t=28,pt=7,l=5,st=fail:0.8
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.74 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.65 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.57 nan 
0.00 0.00 0.00 0.50 nan 
0.00 0.00 0.00 0.40 nan 
0.00 0.00 0.00 0.33 nan 
0.00 0.00 0.00 0.29 nan 
0.00 0.00 0.00 0.25 nan 
0.00 0.00 0.00 0.23 nan 
0.00 0.00 0.00 0.20 nan 
send: 2-2-0-0 s=0,c=1,t=24,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=25,pt=7,l=5,st=ok:0.0
send: 2-2-0-0 s=0,c=1,t=26,pt=7,l=5,st=ok:NAN
send: 2-2-0-0 s=0,c=1,t=27,pt=7,l=5,st=fail:0.0
send: 2-2-0-0 s=0,c=1,t=28,pt=7,l=5,st=fail:0.2
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.19 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.16 nan 
read: 2-1-0 s=0,c=0,t=13,pt=0,l=5:1.4.1
0.00 0.00 0.00 0.13 nan 
0.00 0.00 0.00 0.14 nan 
0.00 0.00 0.00 0.14 nan 
0.00 0.00 0.00 0.11 nan 
0.00 0.00 0.00 0.11 nan 
0.00 0.00 0.00 0.09 nan 

There are some fail, is it normal ?
Thanks

[chatainsim]

I starting to understand.
The SCT-013-030 is used only to get Ampere, nothing more ? Is it correct ?
If I want the Watt I need more sensors connected to the arduino, right ?

[rvendrame]

@chatainsim, if you know the Voltage, just multiply the voltage by the amperage and you will have the wattage...

http://en.wikipedia.org/wiki/Ohm's_law

[maglo18]

In Emonlib you have example to measure watt etc. without measure voltage.
https://github.com/openenergymonitor/EmonLib

[chatainsim]

@rvendrame Thanks, I will try this.
@maglo18 I will try to use some example.
First I need to check if my sketch and my assemble works at least.

Thanks for your help. I think I will need more from you guys !

[chatainsim]

Hello guys,

I've working on my sensor.
It's seems working, but I have some trouble with Watt or Kwh.

Here is the sketch:

// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
#include <SPI.h>
#include <MySensor.h>  
#include "EmonLib.h"             // Include Emon Library
EnergyMonitor emon1;             // Create an instance
#define CHILD_ID 0 
MySensor gw;
unsigned long lastSend;
unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.

MyMessage IrmsMsg(CHILD_ID,V_WATT);
void setup()
{  
  gw.begin();

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("Energy Meter", "1.0");

  // Register this device as power sensor
  gw.present(CHILD_ID, S_POWER);
  emon1.current(A0, 29.0);       // Current: input pin, calibration.
}

void loop()
{
  gw.process();
  unsigned long now = millis();
  double Irms = emon1.calcIrms(1480);
  //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)
  bool sendTime = now - lastSend > SEND_FREQUENCY;
  if (sendTime) { 
    //float Irms = emon1.Irms;             //extract Irms into Variable
    gw.send(IrmsMsg.set(Irms*232.0,1));
    Serial.println(Irms*232.0);
    lastSend = now;
  }
}

I've got around 390 for the Irms*232, do you thinks it's a correct value ?
Can I calculated the current kwh with the ampere ?

Thank you.

[chatainsim]

Hello,

I've made some change in the code :

// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
#include <SPI.h>
#include <MySensor.h>  
#include "EmonLib.h"             // Include Emon Library
EnergyMonitor emon1;             // Create an instance
#define CHILD_ID_WATT 0
#define CHILD_ID_KWH 1
MySensor gw;
unsigned long lastSend;
unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.

MyMessage IrmsMsg(CHILD_ID_WATT,V_WATT);
MyMessage kWhMsg(CHILD_ID_KWH,V_KWH);
void setup()
{  
  gw.begin();
  gw.sendSketchInfo("Energy Meter", "1.0");  // Send the sketch version information to the gateway and Controller
  gw.present(CHILD_ID_WATT, S_POWER);  // Register this device as power sensor
  gw.present(CHILD_ID_KWH, S_POWER);
  emon1.current(A0, 29.0);       // Current: input pin, calibration.
}

void loop()
{
  gw.process();
  unsigned long now = millis();
  //emon1.serialprint();           // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
  double Irms = emon1.calcIrms(1480);
  bool sendTime = now - lastSend > SEND_FREQUENCY;
  if (sendTime) {
    gw.send(IrmsMsg.set((Irms*232.0)*1000, 1));
//    Serial.print("Watt: ");
//    Serial.println(Irms*232.0);
    gw.send(kWhMsg.set((Irms*232.0)/1000, 1));
//    Serial.print("kWH: ");
//    Serial.println((Irms*232.0)/1000);
    lastSend = now;
  }
}

But in Domoticz, I've two line for this but in kWh and not on in kWh and other in Watt :

Do you know why ?

Regards,

[AWI]

@chatainsim Domoticz does not have a different device for power (Watt) and energy(kWh) but combines them in a single device. What you need to do is send both the power and energy to the same child.

[chatainsim]

Thanks, but I've already test this and only the kWh is updated in domoticz, not watt.

// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3  ***/
#include <SPI.h>
#include <MySensor.h>  
#include "EmonLib.h"             // Include Emon Library
EnergyMonitor emon1;             // Create an instance
#define CHILD_ID 0
MySensor gw;
unsigned long lastSend;
unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway.

MyMessage IrmsMsg(CHILD_ID,V_WATT);
MyMessage kWhMsg(CHILD_ID,V_KWH);
void setup()
{  
  gw.begin();
  gw.sendSketchInfo("Energy Meter", "1.0");  // Send the sketch version information to the gateway and Controller
  gw.present(CHILD_ID, S_POWER);  // Register this device as power sensor
  emon1.current(A0, 29.0);       // Current: input pin, calibration.
}

void loop()
{
  gw.process();
  unsigned long now = millis();
  //emon1.serialprint();           // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
  double Irms = emon1.calcIrms(1480);
  bool sendTime = now - lastSend > SEND_FREQUENCY;
  if (sendTime) {
    gw.send(IrmsMsg.set((Irms*232.0)*1000, 1));
//    Serial.print("Watt: ");
//    Serial.println(Irms*232.0);
    gw.send(kWhMsg.set((Irms*232.0)/1000, 1));
//    Serial.print("kWH: ");
//    Serial.println((Irms*232.0)/1000);
    lastSend = now;
  }
}

Can you help me with this ?

Thanks

[AWI]

@chatainsim I am pretty sure it is a combined device which shows Watt only when added ...:

Although I am not sure if the Domoticz MySensors plug-in handles it right (I'm still using my own script).

[chatainsim]

Ok, thanks.
How do you get your watt info ? With teleinfo ?

[AWI]

@chatainsim
I send the V_Watt messages from the Power meter to Domoticz.

[chatainsim]

@AWI

MyMessage IrmsMsg(CHILD_ID,V_WATT);
MyMessage kWhMsg(CHILD_ID,V_KWH);

I also send both data but it's seems that Domoticz is ingnoring it !
I don't know why.