Published August 5, 2020

Dam monitoring with B-l072Z LoRaWAN

Monitoring the dam parameters like water level, humidity, pressure, temperature etc. Its essential to maintain the normal condition of the dam

IntermediateProtip3 hours3,143

Things used in this project

Hardware components

STM32 B-L072Z-LRWAN1

STM32 Nucleo X-NUCLEO IKS01A3

Arduino WATER SENSOR SEN18

Arduino RAIN SENSOR MH-RD

Software apps and online services

Arduino IDE

HELIUM CONSOLE

Story

Hi, the project is developed for solving the problems of dam monitoring. I selected this topic to modify the existing and old technology.

This project is absolutely basic model of the Dam monitoring.

Recently, the flood is a big disaster in rainy areas.So flood mainly occurs due to unwanted and unplanned opening of dam. Its a main reason for flood. The problem is difficult to maintain and after disaster it causes huge compensation for government.The dam monitoring is essential. So the dam monitoring and prediction is helpful and reduce the disaster level.

The system reads the dam parameter it also gives the rainfall rate and flood prediction precautions. Usually, dam locates far away from towers. So the B-L072Z LoRa-WAN development board is possible to transmit data to long range at low power, Because its helpful than other modules.

In the pandemic, I have a lack of some modules due to buying and home delivery are stopped in may area. I am very sorry for that.

B-L072Z LRWAN1 module

B-L072Z LRWAN1

features -

Open LoRa module by Murata(STM32L072CZY6TR MCU)
Extension connectivity (ARDUINO UNO and USB)
Low power transceiver
Embedded ST-LINK/V2-1 programmer
Arm Mbed Enabled

X-NUCLEO IKS01A3 module

X-NUCLEO IKS01A3 module

features -

This module have many built-in sensors

3-axis MEMS accelerometer
iNEMO 6DoF inertial measurement unit
3- axis magnetic sensor(50gauss)
MEMS nano pressure sensor
capacitive digital relative humidity and temperature
DIL24 socket for additional MEMS adapter and other sensor.
Equipped with arduino UNO R3 connector
Compatible with STM32 Nucleo Boards

In our project we are using only Three sensors of this board

water level sensor

.the sensor has 3 pins +, - and S.

the pin S is the signal pin its defined in the schematic diagram as A. this pin S/A connected to the A2

Rain drop sensor

it predict the condition while raining

the sensor has 3 pins VCC ,GND, D and A. The pin A is connected to A0

the x-nucleo module is connect to B-L072Z

connect the water level sensor pin A1

finally...

finally connected all module to the B-L072Z

Helium console

device interface

I haven't the gateway, so I am just showing the interface of Helium console

The code is working well.

the output(arduino serial monitor)

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Code

The code

#include <LPS22HHSensor.h>
#include <STTS751Sensor.h>
#include <HTS221Sensor.h>

#ifdef ARDUINO_SAM_DUE
#define DEV_I2C Wire1
#elif defined(ARDUINO_ARCH_STM32)
#define DEV_I2C Wire
#elif defined(ARDUINO_ARCH_AVR)
#define DEV_I2C Wire
#else
#define DEV_I2C Wire
#endif
#define SerialPort Serial

// lowest and highest Rain sensor readings:
int rain = A0;
const int sensorMin = 0;     // sensor minimum
const int sensorMax = 1024;  // sensor maximum
// Water level sensor 
int watersensor = A2;
const int waterMin = 0; // minimum value of this sensor its too small
const int waterMax= 1024; //the maximum value of reading 
int levelReading;

// Components
LPS22HHSensor *PressTemp;
HTS221Sensor *HumTemp;
STTS751Sensor *Temp3;

void setup() {

  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(watersensor,INPUT);
  pinMode(rain,INPUT);

  // Initialize serial for output.
  SerialPort.begin(115200);
  
  // Initialize I2C bus.
  DEV_I2C.begin();

  
  PressTemp = new LPS22HHSensor(&DEV_I2C);
  PressTemp->Enable();
  HumTemp = new HTS221Sensor (&DEV_I2C);
  HumTemp->Enable();
  Temp3 = new STTS751Sensor (&DEV_I2C);
  Temp3->Enable();

}

void loop() {
  
  // Led blinking.
  digitalWrite(LED_BUILTIN, HIGH);
  delay(250);
  digitalWrite(LED_BUILTIN, LOW);
  delay(250);

  // Read humidity and temperature.
  float humidity = 0, temperature = 0;
  HumTemp->GetHumidity(&humidity);
  HumTemp->GetTemperature(&temperature);

  // Read pressure and temperature.
  float pressure = 0, temperature2 = 0;
  PressTemp->GetPressure(&pressure);
  PressTemp->GetTemperature(&temperature2);

  //Read temperature
  float temperature3 = 0;
  Temp3->GetTemperature(&temperature3);

  // read the Rain sensor on analog A0:
  int sensorReading = analogRead(rain);
  int range = map(sensorReading, sensorMin, sensorMax, 0, 3);
  
  // range value:
  switch (range) {
 case 0:    // Sensor getting wet
    Serial.println("Raining");
    break;
 case 1:    // Sensor getting wet
    Serial.println("Rain Warning");
    break;
 case 2:    // Sensor dry
    Serial.println("Not Raining");
    break;
  }

  // Read the rain sensor on analog A2
  int levelReading = analogRead(watersensor);
  int level = map(levelReading, waterMin, waterMax, 0, 10);  //the sensor is very small so we used 10% only.
  
  // range value: the level of water described below
  switch (level) {
 case 0:    
    Serial.println(" LEVEL OF WATER = 91%");
    break;
 case 1:    
    Serial.println(" LEVEL OF WATER = 92%");
    break;
 case 2:    
    Serial.println(" LEVEL OF WATER = 93%");
    break;
 case 3:    
    Serial.println(" LEVEL OF WATER = 94%");
    break;
 case 4:   
    Serial.println(" LEVEL OF WATER = 95%");
    break;
 case 5:   
    Serial.println(" LEVEL OF WATER = 96%");
    break; 
 case 6:    
    Serial.println(" LEVEL OF WATER = 97%");
    break;
 case 7:   
    Serial.println(" LEVEL OF WATER = 98%");
    break;
 case 8:   
    Serial.println(" LEVEL OF WATER = 99%");
    break;
 case 9:    
    Serial.println(" LEVEL OF WATER = 100% Full");
    break;

  }
  

  // Output data.
  SerialPort.print("| Hum[%]: ");
  SerialPort.print(humidity, 2);
  SerialPort.print(" | Temp[C]: ");
  SerialPort.print(temperature, 2);
  SerialPort.print(" | Pres[hPa]: ");  
  SerialPort.print(pressure, 2);
  SerialPort.print(" | Temp2[C]: ");
  SerialPort.println(temperature2, 2);

}