Get Advanced Monitoring With IoT-Based Water Quality Sensors

13 May 2023 Balmiki Mandal 0 µC - µP

Water quality is a critical factor for many industries, including agriculture, food and beverage, and manufacturing. Poor water quality can lead to a range of issues, from reduced crop yields to contamination of food and drink products.

IoT-based water sensors can help to maintain the quality of water by monitoring various parameters such as pH, temperature, dissolved oxygen, and turbidity. These sensors can be deployed in water sources such as lakes, rivers, and reservoirs, as well as in water treatment plants, distribution systems, and storage tanks.

Components Required

  • Microcontroller board (such as Arduino or Raspberry Pi)
  • WiFi or cellular module
  • Water sensors (such as pH sensor, temperature sensor, dissolved oxygen sensor, and turbidity sensor)
  • Power supply (such as batteries or solar panels)
  • Enclosure for the sensors and microcontroller

Circuit Diagram

The circuit diagram will vary depending on the specific sensors and microcontroller board being used. However, most water sensors will have a simple analog or digital output that can be connected to the microcontroller board's analog or digital input pins.

Code

The code for an IoT-based water sensor system will depend on the specific sensors being used and the desired functionality. However, in general, the code will need to do the following:

  1. Initialize the sensors and the microcontroller board.
  2. Read the sensor values periodically.
  3. Transmit the sensor values to a cloud-based platform or a local server.
  4. Analyze the sensor data to identify any issues with water quality.
  5. Send alerts or notifications if the water quality falls below a certain threshold.

Here's an example code for a pH sensor using an Arduino board and a WiFi module:

#include <WiFi.h>
#include <SoftwareSerial.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* serverName = "your_SERVER_NAME";
const int serverPort = 80;

int pHValue = 0;
SoftwareSerial pHsensor(2,3);

void setup() {
  Serial.begin(9600);
  pHsensor.begin(9600);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  if (pHsensor.available() > 0) {
    pHValue = pHsensor.read();
    Serial.print("pH value: ");
    Serial.println(pHValue);
    sendData(pHValue);
  }
  delay(1000);
}

void sendData(int value) {
  WiFiClient client;
  if (!client.connect(serverName, serverPort)) {
    Serial.println("Connection failed");
    return;
  }
  String data = "pH=" + String(value);
  client.print("POST /water-quality HTTP/1.1\n");
  client.print("Host: ");
  client.print(serverName);
  client.print(":");
  client.print(serverPort);
  client.print("\n");
  client.print("Content-Type: application/x-www-form-urlencoded\n");
  client.print("Content-Length: ");
  client.print(data.length());
  client.print("\n\n");
  client.print(data);
  Serial.println("Data sent");
}

This code uses a pH sensor connected to an Arduino board to measure the pH value of the water. It then sends the pH value to a web server using a POST request. The server can then analyze the pH value to determine if the water quality is within acceptable limits.

Overall, IoT-based water sensors can help to ensure the quality of water and prevent costly issues related to poor water quality. With the help of cloud-based platforms and machine learning algorithms, the data collected by these sensors

BY: Balmiki Mandal

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