07-18-2023, 01:37 PM
Code:
/**
* This program shows how we can get (estimate) the right sensitivity value for
* the sensor.
*
* This program will swipe from the lowest sensitivity estimate value to the
* highest. The program will stop if the voltage reading result from the sensor
* is within the specified tolerance limit or the sensitivity value has exceeded
* the highest predetermined value (which in this case is considered failed to
* be determined).
*/
#include <ZMPT101B.h>
#define ACTUAL_VOLTAGE 220.0f // Change this based on actual voltage
#define START_VALUE 0.0f
#define STOP_VALUE 1000.0f
#define STEP_VALUE 0.25f
#define TOLLERANCE 1.0f
#define MAX_TOLLERANCE_VOLTAGE (ACTUAL_VOLTAGE + TOLLERANCE)
#define MIN_TOLLERANCE_VOLTAGE (ACTUAL_VOLTAGE - TOLLERANCE)
// ZMPT101B sensor output connected to analog pin A0
// and the voltage source frequency is 50 Hz.
ZMPT101B voltageSensor(34, 50.0);
void setup() {
Serial.begin(115200);
Serial.print("The Actual Voltage: ");
Serial.println(ACTUAL_VOLTAGE);
float senstivityValue = START_VALUE;
voltageSensor.setSensitivity(senstivityValue);
float voltageNow = voltageSensor.getRmsVoltage();
Serial.println("Start calculate");
while (voltageNow > MAX_TOLLERANCE_VOLTAGE || voltageNow < MIN_TOLLERANCE_VOLTAGE) {
if (senstivityValue < STOP_VALUE) {
senstivityValue += STEP_VALUE;
voltageSensor.setSensitivity(senstivityValue);
voltageNow = voltageSensor.getRmsVoltage();
Serial.print(senstivityValue);
Serial.print(" => ");
Serial.println(voltageNow);
} else {
Serial.println("Unfortunately the sensitivity value cannot be determined");
return;
}
}
Serial.print("Closest voltage within tolerance: ");
Serial.println(voltageNow);
Serial.print("Sensitivity Value: ");
Serial.println(senstivityValue, 10);
}
void loop() {}