pH Sensor Simulation in Proteus for Water Quality Monitoring | Step-by-Step Guide

Learn how to simulate a pH sensor in Proteus and build a complete water quality monitoring system using pH sensors. Understand the importance of pH in water quality assessment and how to ensure accurate measurements for environmental monitoring.

Introduction

In the realm of environmental monitoring, water quality assessment plays a vital role in safeguarding our ecosystems and public health. One crucial parameter that directly impacts water quality is the pH level. Monitoring pH levels in water bodies is essential to understand the water's acidity or alkalinity, which significantly influences aquatic life and ecological balance. In this blog post, we will explore the process of simulating a pH sensor in Proteus, a popular electronics simulation software, and use it to construct a complete water quality monitoring system.

I. Understanding pH and Its Significance in Water Quality

Before diving into the simulation process, it's crucial to grasp the concept of pH and its relevance in water quality analysis. The pH scale measures the acidity or alkalinity of a solution, ranging from 0 to 14. A pH value of 7 is considered neutral, while values below 7 indicate acidity, and values above 7 denote alkalinity. Aquatic organisms, including fish and other wildlife, heavily rely on a balanced pH level for survival and optimal functioning. Monitoring pH is essential for early detection of pollution, chemical imbalances, or environmental changes that may affect aquatic ecosystems.

II. Proteus Simulation: Getting Started

Proteus is a powerful simulation software used for designing and testing electronic circuits. It enables engineers and hobbyists to develop, simulate, and validate their electronic projects virtually before deploying them in the real world. To get started with the pH sensor simulation in Proteus, follow these steps:

1. Download and install Proteus: Visit the official website of Proteus and download the latest version of the software. Install it on your computer following the provided instructions.

2. 
   

3. Launch Proteus and create a new project: Open the Proteus software and create a new project. Give it an appropriate name, such as "pH Sensor Simulation."

4. 
   

5. Add components to the project: In the Proteus library, search for the required components, such as a pH sensor module, Arduino board, LCD display, and other supporting elements. Drag and drop these components into your project workspace.

6. 
   

III. Simulating the pH Sensor

Now that we have set up our Proteus project, let's focus on simulating the pH sensor:

1. Connect the pH sensor module to Arduino: Wire the pH sensor module to the Arduino board appropriately. Take reference from the sensor datasheet or module documentation to ensure accurate connections.

2. 
   

3. Code the Arduino for pH sensor interfacing: Write a simple Arduino code to interface the pH sensor with the microcontroller. This code will read the analog output from the pH sensor and convert it into pH values for display.

4. 
   

5. Compile and upload the code: Compile the Arduino code and upload it to the microcontroller within Proteus.

Parts list :

1. Arduino Uno : https://amzn.to/43Lyla3

2. pH sensor : https://amzn.to/4551MoG

3. Jumper Wires : https://amzn.to/3rLELbN

4. LCD Display : https://amzn.to/3Dy16wa

Circuit Diagram :

Arduino Code :

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //

// pH sensor meter //

// By MOHD SOHAIL //

 

#include <LiquidCrystal.h>

LiquidCrystal lcd(2, 3, 4, 5, 6, 7);

#define SensorPin 0          // the pH meter Analog output is connected with the Arduino’s Analog

unsigned long int avgValue;  //Store the average value of the sensor feedback

float b;

int buf[10],temp;

 

 

void setup()

{

  Serial.begin(9600);  

  Serial.println("Ready");    //Test the serial monitor

  lcd.begin(16,2);

  lcd.setCursor(0,0);

  lcd.print(" pH Sensor Meter"); 

  lcd.setCursor(0,1);

  lcd.print(" EIF - SOHAIL ");

  delay(2000); 

  lcd.clear();

}

 

void loop()

{

  for(int i=0;i<10;i++)       //Get 10 sample value from the sensor for smooth the value

  { 

    buf[i]=analogRead(SensorPin);

    delay(10);

  }

  for(int i=0;i<9;i++)        //sort the analog from small to large

  {

    for(int j=i+1;j<10;j++)

    {

      if(buf[i]>buf[j])

      {

        temp=buf[i];

        buf[i]=buf[j];

        buf[j]=temp;

      }

    }

  }

  avgValue=0;

  for(int i=2;i<8;i++)                      //take the average value of 6 center sample

    avgValue+=buf[i];

  float phValue=(float)avgValue*5.0/1024/6; //convert the analog into millivolt

  phValue=3.5*phValue;     //convert the millivolt into pH value

  

  Serial.print("    pH:");  

  Serial.print(phValue,2);

  Serial.println(" "); 

  lcd.setCursor(0,0);

  lcd.print("pH Value :  "); 

  lcd.setCursor(0,12);

  lcd.print(phValue);

  delay(800);

}

Watch the video from below link :

Contact me for more projects

WhatsApp / Telegram : +919557024177