Water Depth Measurement System by using Ultrasonic Sensor

The following system will measure the depth of the water and measured depth will be notified by two different ways. In section 5.2, depth will be displayed on the LCD display that is used and In section 5.3 depth will be sent to the given mobile number as a SMS.

5.1. Interfacing ultrasonic sensor with Arduino

Vcc pin of the Ultrasonic Sensor is connected to the 5V pin of Arduino, GND

pin is connected to the GND pin, Trig pin is connected to digital pin 8 of Arduino and Echo pin is connected to digital pin 7 of Arduino.

Ultrasonic sensor	Arduino
Vcc	5V
Gnd	Gnd
Trig	pin 7
Echo	pin 8

5.2. Ultrasonic sensor with LCD

5.2.1 Circuit diagram:

           

5.2.2 Arduino Program:

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int trig=7 ;

const int echo=8;

void setup()

{

                Serial.begin(9600);

                lcd.begin(16,2);

}

void loop()

{

                lcd.clear();

                long  timeDuration,cm;

                pinMode(trig,OUTPUT);

                digitalWrite(trig,LOW);

                delayMicroseconds(4);

                digitalWrite(trig,HIGH);

                delayMicroseconds(10);

                digitalWrite(trig,LOW);

                pinMode(echo, INPUT);

                timeDuration = pulseIn(echo, HIGH);

                cm= microTocms(timeDuration);  //conversion of microseconds to centimeters

                Serial.print(cm);

                Serial.print("cm");

                Serial.println();

                lcd.print(cm);

                lcd.print("  cm");

                 delay(1000);

}

long  microTocms(long  microseconds)

{

  // The speed of sound is 340 m/s or 29 microseconds per centimeter.

  // The ping travels out and back, so to find the distance of the

  // object we take half of the distance travelled.

  return microseconds / (29 * 2);

}

5.2.3. Ouput of the System

5.3. Ultrasonic sensor with GSM

Following system will use ultrasonic sensor to measure the water depth, then measured distance will be sent to given mobile number.            
 

5.3.1. Circuit diagram:

5.3.2. Arduino Program:

const int trig=7 ;

const int echo=8;

void setup()

{

Serial.begin(9600);

                 Serial1.begin(9600); //Baud rate of the GSM/GPRS Module

                 Serial1.print("\r");

}

void loop()

{

                long  timeDuration,cm;

                pinMode(trig,OUTPUT);

                digitalWrite(trig,LOW);

                delayMicroseconds(2);

                digitalWrite(trig,HIGH);

                delayMicroseconds(10);

                digitalWrite(trig,LOW);

                pinMode(echo, INPUT);

                timeDuration = pulseIn(echo, HIGH);

                cm= microTocms(timeDuration);

                Serial.print(cm);

                Serial.print("cm");

                Serial.println();

 

                //  delay(2000);

            Serial1.print("AT+CMGF=1\r");

            delay(1000);

            Serial1.print("AT+CMGS=\"+919542081456\"\r"); //Number to which you want to send the SMS

            delay(1000);

            Serial1.print(cm); //The text of the message to be sent

            Serial1.print("cm");

            delay(1000);

            Serial1.write(0x1A);

            delay(20000);

}

long  microTocms(long  microseconds)

{

return microseconds / (29 * 2);

}

5.3.3. Output of the system

 Please let me know if you have any quires?