SCT-013-030 current monitor sensor
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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 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.
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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
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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
@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).
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Ok, thanks.
How do you get your watt info ? With teleinfo ? -
Ok, thanks.
How do you get your watt info ? With teleinfo ?@chatainsim
I send the V_Watt messages from the Power meter to Domoticz. -
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.@chatainsim Sounds you like you need to consult the Domoticz forum. The Domoticz code shows that is interpreted.
case V_WATT: { _tMySensorSensor *pSensorKwh = FindSensor(pSensor->nodeID, V_KWH); if (pSensorKwh) { SendKwhMeter(pSensorKwh->nodeID, pSensorKwh->childID, pSensorKwh->batValue, pSensor->floatValue / 1000.0f, pSensorKwh->floatValue, "Meter"); } else { _tUsageMeter umeter; umeter.id1 = 0; umeter.id2 = 0; umeter.id3 = 0; umeter.id4 = pSensor->nodeID; umeter.dunit = pSensor->childID; umeter.fusage = pSensor->floatValue/1000.0f; sDecodeRXMessage(this, (const unsigned char *)&umeter); } } break; case V_KWH: { _tMySensorSensor *pSensorWatt = FindSensor(pSensor->nodeID, V_WATT); if (pSensorWatt) { SendKwhMeter(pSensor->nodeID, pSensor->childID, pSensor->batValue, pSensorWatt->floatValue / 1000.0f, pSensor->floatValue, "Meter"); } else { SendKwhMeter(pSensor->nodeID, pSensor->childID, pSensor->batValue, 0, pSensor->floatValue, "Meter"); } } break;``` -
Does anyone have some OpenHab items and rules for @chatainsim sketch posted above? I have a SCT-013-000 can anyone help me use it in my project?
Thanks! -
Hello, anybody can help me here?
What I want to do is to get the instant watt or kW read from my SCT013000 and to get also the kWh from a certain date, let's say fro first of this month!
Any idea will be kindly appreciated!
I'm using openhanb to display info and I'll need some rules for this!
Thanks all! -
I have got this to work on my Cdn system 120/240 vac using A0 and A1 pins. The code needed to be changed to address our voltage and another clamp added., but I do have a few questions;
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Is there a way I can record or view amps consumed in the vera dashboard?
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I used the sketch above displayed by @chatainsim and in it there are two lines of code with values 29.0 and second 1480 both in green and in brackets. For the life of me I can not find an explanation of these or how the values were arrived at. Can anyone help with explanation?
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); -
Is there a method to show current in phase. I tried presenting CHILD_ID, S_MULTIMETER and MyMessage IrmsMsg(CHILD_ID,V_CURRENT); but got nowhere.
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There is/was much running up and down stairs from electrical panel to computer and back is OTA IDE what I think it might be-- firmware or sketches can be updated over the air from my computer>vera>gw>node while not needing to access the node? If so there is much learning for me to do.
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Using arduino 1.6.5, Lib 1.4.1, vera 3/veralite, ui5, Ethernet g/w , win 8.1, pro mini clone
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Hello, last week i buy SCT013-30 (ebay.fr) and follow this topic for have powermeter with mysensors. I need only energy (kWh) and power (W) same my OWL sensors (use with domoticz controler)
I modifie the sketch from mysensors/pulse powermeter (http://www.mysensors.org/build/pulse_power)// 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 #define PIN_ANALOG_I A2 MySensor gw; unsigned long lastSend; unsigned long lastSend2; unsigned long SEND_FREQUENCY = 90000; // Minimum time between send (in milliseconds). unsigned long SEND_FREQUENCY2 = SEND_FREQUENCY / 25; int index = 0; double Irms=0; double power; boolean pcReceived = false; double nrj=0, old_nrj; MyMessage IrmsMsg(CHILD_ID,V_WATT); MyMessage kWhMsg(CHILD_ID,V_KWH); MyMessage pcMsg(CHILD_ID,V_VAR1); void incomingMessage(const MyMessage &message) { if (message.type==V_VAR1) { nrj = old_nrj = message.getLong(); Serial.print("Received last nrj count from gw:"); Serial.println(nrj); pcReceived = true; } } void setup() { gw.begin(incomingMessage); 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 gw.request(CHILD_ID, V_VAR1); emon1.current(PIN_ANALOG_I, 30.0); // Current: input pin, calibration. } void loop() { gw.process(); unsigned long now = millis(); unsigned long now2 = millis(); bool sendTime2 = now2 - lastSend2 > SEND_FREQUENCY2; if (sendTime2) //calcul Irms moy { if (index==0) Irms=emon1.calcIrms(1480); else { index++; Irms = (index*Irms+emon1.calcIrms(1480))/(index+1); } lastSend2 = now2; } bool sendTime = now - lastSend > SEND_FREQUENCY; if (sendTime && pcReceived) { power = Irms*232.0; gw.send(IrmsMsg.set(power,1)); Serial.println(Irms*232.0); nrj += (power*SEND_FREQUENCY/1000)/3.6E6; gw.send(kWhMsg.set(nrj,3)); lastSend = now; index = 0; old_nrj=nrj; } else if (sendTime && !pcReceived) { gw.request(CHILD_ID, V_VAR1); lastSend=now; } }it seems that it works for now (but not optimal).
Note 1) my cosphy=1 because i use only ampere clamp, i cant measure the phase between curent i and tension v.
2) my calibration constant (used in emonlib) is 30
3) Sorry for my english :disappointed: - Je suis français. -
Hello, if i remember physics course in university Power P=u.i and energy E=integrale(Pdt)=integrale(u.i.dt)=UeffxIeffxcos(phi)
but for particular citizen same me, energy provider non consider cos(phi)So, i correct my last sketch for request last nrj value to the gw.
// 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 #define PIN_ANALOG_I A2 MySensor gw; unsigned long lastSend; unsigned long lastSend2; unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway. unsigned long SEND_FREQUENCY2 = SEND_FREQUENCY / 25; int index = 0; double Irms=0; double power; boolean pcReceived = false; boolean onyva=true; float nrj=0, old_nrj; MyMessage IrmsMsg(CHILD_ID,V_WATT); MyMessage kWhMsg(CHILD_ID,V_KWH); MyMessage pcMsg(CHILD_ID,V_VAR1); void incomingMessage(const MyMessage &message) { if (message.type==V_VAR1) { nrj = old_nrj = message.getFloat(); Serial.print("Received last nrj count from gw:"); Serial.println(nrj); pcReceived = true; } } void setup() { gw.begin(incomingMessage); 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 gw.request(CHILD_ID, V_VAR1); emon1.current(PIN_ANALOG_I, 30.0); // Current: input pin, calibration. } void loop() { if (onyva) gw.process(); onyva = false; unsigned long now = millis(); //unsigned long now2 = millis(); bool sendTime2 = now - lastSend2 > SEND_FREQUENCY2; if (sendTime2) //calcul Irms moy { if (index==0) Irms=emon1.calcIrms(1480); else { index++; Irms = (index*Irms+emon1.calcIrms(1480))/(index+1); } lastSend2 = now; } bool sendTime = now - lastSend > SEND_FREQUENCY; if (sendTime && pcReceived) { power = Irms*232.0; gw.send(IrmsMsg.set(power,1)); Serial.println(Irms*232.0); nrj += (power*SEND_FREQUENCY/1000)/3.6E6; gw.send(kWhMsg.set(nrj,5)); gw.send(pcMsg.set(nrj,5)); lastSend = now; index = 0; old_nrj=nrj; onyva=true; } else if (sendTime && !pcReceived) { gw.request(CHILD_ID, V_VAR1); lastSend=now; index=0; onyva=true; } }thx...
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Sorry, I'm late debause i come back holiday today
This sketch send Power and energy (kWh) every Sendfrequency=90s but the sketch not measure power every 90s but everyre 90/25=3,6s and send to the GW the mean power (Pmean)
this is calculate here :
if (index==0) Irms=emon1.calcIrms(1480);
else {
index++;
Irms = (index*Irms+emon1.calcIrms(1480))/(index+1);
}
lastSend2 = now; -
Hello, if i remember physics course in university Power P=u.i and energy E=integrale(Pdt)=integrale(u.i.dt)=UeffxIeffxcos(phi)
but for particular citizen same me, energy provider non consider cos(phi)So, i correct my last sketch for request last nrj value to the gw.
// 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 #define PIN_ANALOG_I A2 MySensor gw; unsigned long lastSend; unsigned long lastSend2; unsigned long SEND_FREQUENCY = 20000; // Minimum time between send (in milliseconds). We don't wnat to spam the gateway. unsigned long SEND_FREQUENCY2 = SEND_FREQUENCY / 25; int index = 0; double Irms=0; double power; boolean pcReceived = false; boolean onyva=true; float nrj=0, old_nrj; MyMessage IrmsMsg(CHILD_ID,V_WATT); MyMessage kWhMsg(CHILD_ID,V_KWH); MyMessage pcMsg(CHILD_ID,V_VAR1); void incomingMessage(const MyMessage &message) { if (message.type==V_VAR1) { nrj = old_nrj = message.getFloat(); Serial.print("Received last nrj count from gw:"); Serial.println(nrj); pcReceived = true; } } void setup() { gw.begin(incomingMessage); 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 gw.request(CHILD_ID, V_VAR1); emon1.current(PIN_ANALOG_I, 30.0); // Current: input pin, calibration. } void loop() { if (onyva) gw.process(); onyva = false; unsigned long now = millis(); //unsigned long now2 = millis(); bool sendTime2 = now - lastSend2 > SEND_FREQUENCY2; if (sendTime2) //calcul Irms moy { if (index==0) Irms=emon1.calcIrms(1480); else { index++; Irms = (index*Irms+emon1.calcIrms(1480))/(index+1); } lastSend2 = now; } bool sendTime = now - lastSend > SEND_FREQUENCY; if (sendTime && pcReceived) { power = Irms*232.0; gw.send(IrmsMsg.set(power,1)); Serial.println(Irms*232.0); nrj += (power*SEND_FREQUENCY/1000)/3.6E6; gw.send(kWhMsg.set(nrj,5)); gw.send(pcMsg.set(nrj,5)); lastSend = now; index = 0; old_nrj=nrj; onyva=true; } else if (sendTime && !pcReceived) { gw.request(CHILD_ID, V_VAR1); lastSend=now; index=0; onyva=true; } }thx...
Thanks @fredok I will give a try !
And I'm french too ;)
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Sorry, I'm late debause i come back holiday today
This sketch send Power and energy (kWh) every Sendfrequency=90s but the sketch not measure power every 90s but everyre 90/25=3,6s and send to the GW the mean power (Pmean)
this is calculate here :
if (index==0) Irms=emon1.calcIrms(1480);
else {
index++;
Irms = (index*Irms+emon1.calcIrms(1480))/(index+1);
}
lastSend2 = now;Hi @fredok
Your sketch working fine.
Except in domoticz only the kWh is updated. Watt is not.
Do you have a clue about that ?
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Hello chatainsim, in my domoticz i have only one device counting (kWh+instant Power)
The instant power updated every 90s is writing in Watt value(83.3) , the kWh of the day (1.174) and total energy (61.582 kWh).... the device log show the power = f(t).
Look if Watt value in (kWhMeter) device change, look the log graph ... if is ok, u not need Wattmeter device.
Thx Fredok -
Hello chatainsim, in my domoticz i have only one device counting (kWh+instant Power)
The instant power updated every 90s is writing in Watt value(83.3) , the kWh of the day (1.174) and total energy (61.582 kWh).... the device log show the power = f(t).
Look if Watt value in (kWhMeter) device change, look the log graph ... if is ok, u not need Wattmeter device.
Thx Fredok@fredok Yes, the kWhMeter is working fine:
