PT MODULE AC OR DC VOLTAGE SENSING MODULE

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PT MODULE AC OR  DC  VOLTAGE SENSING MODULE 

Video Tutorial  PART 2 PART 3

Ac voltage range= 0 to 275

DC Voltage range= 0 to 100

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₨ 450

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This  circuit have 3 possibility of use.

1 Dc voltage Sensing

2 Ac voltage Sensing using Detecting Peak Value of Rectified and filtered sine wave .

3 AC Voltage Sensing using Clamping Method And Peak Detecting  Without Filtering .

1 Dc voltage Sensing

This circuit have two options , 100V input sensing or 25 voltage sensinng.

Its Very simple Circuit , all you need to select you range using jumper and calibration after  burning  example code in arduino. This is just divider curcuit.

This circuit divides input volts by 10 and gives to you arduino.

So if arduino is reading 2.5v , thats mean input is 2.5*10 volts.

Its linear and stable circuit with noise filtering section in it.

///////////////

2 AC voltage Sensing using Peak Detecting  of Rectified and filtered sine wave .

   Here is circuit diagram of this board.

There is no need to power up this section , it just gives ready to use signal for microcontroller to measure.Only difference between this circuit and previous is rectification section.

This section converts input AC voltage to DC , and gives  these voltage to voltage divider section.

3 AC Voltage Sensing using Clamping Method And Peak Detecting  Without Filtering .

In this circuit we are clamping sine wave and adjusting zero degree of sine wave to vcc/2 of microcontroller power supply.

This way we get complete sine wave even without losing 0.7v across diodes.

In this board we can measure and monitor complete sine wave , either there is noise in sine wave , surge , or power fail.

There is no delay of data , but its microcontroller programmer responsibility to write software for this board , We have given a basic program of arduino to work for this section  , it works nicely for voltage measurement. 

Onboard precision clamp circuit , the signal for precise sampling .

Can be measured within the 275V AC voltage corresponding to the analog output can be adjusted

Specifications:

  1. PCB board size: 3 inch x 2 inch

  2. Rated Input Current: 10mA

  3. Retardation (rated input): "20' (input 2mA, sampling resistance 100Ω)

  4. The linear range: 0 ~ 300V

  5. Isolation voltage: 1000V

  6. Operating temperature: -40 ° C- + 70 ° C

Only one section can be used at a time , DC voltage measurement , or AC voltage measurement also only 1 circuit can be used at a time while measuring  of AC voltage because  of ground is different between both sections.




















/*
By Irfan Ahmad

*/
//////////////////////////////////////////////
void setup() {
Serial.begin(9600);
}
//////////////////////////////////////////////
void loop() {

// float DC_Voltage=analogRead(A0);DC_Voltage= map(DC_Voltage, 0, 1023, 0, 500); DC_Voltage=DC_Voltage/10; Serial.print("Dc_Voltage="); Serial.println(DC_Voltage); // for dc volt
float Ac_Voltage=read_using_dc_voltage_peack(); Serial.print("Ac_Voltage="); Serial.println(Ac_Voltage); // for ac volt using simple method
// float Ac_Voltages=read_using_sine_wave();if(Ac_Voltages<0) Ac_Voltages=0; Serial.print("Ac_Voltage="); Serial.println(Ac_Voltages); // for ac volt using sine wave.

delay(50); // delay in between reads for stability
}
///////////////////////////////////////////////
float read_using_dc_voltage_peack()
{
return(( map(read_peak(A0), 0, 1023, 0, 500))*0.707);
}
/////////////////////////////////////////////////
float read_using_sine_wave()
{
return((map(read_peak(A0), 0, 1023, 0, 1000))-500)*0.707;
}
/////////////////////////
unsigned long read_peak(int pin) // this function gives peak value of voltage on selected pin
{
int temp,j;
unsigned long x=0;
for( j=0;j<510;j++)
{
temp= analogRead(pin);
if(temp>x) x=temp;
delayMicroseconds(50);
}
return x;
}

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PT MODULE AC OR  DC  VOLTAGE SENSING MODULE

PT MODULE AC OR DC VOLTAGE SENSING MODULE

PT MODULE AC OR  DC  VOLTAGE SENSING MODULE 

Video Tutorial  PART 2 PART 3

Ac voltage range= 0 to 275

DC Voltage range= 0 to 100

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