Fall Detection Utilizing IndusBoard

Fall detection utilizing Indusboard includes monitoring the accelerometer information to detect when an individual falls. Upon detecting a fall, the system prompts a blue LED to visually point out the autumn occasion. Concurrently, a message is printed to the serial monitor, notifying caregivers or monitoring programs {that a} fall has been detected, prompting them to examine on the person.

After a while, the accelerometer senses that the particular person is now not shifting considerably, indicating that they’re at relaxation. At this level, the system switches the blue LED off and prompts a crimson LED. The crimson LED serves as a secondary visible indicator that the particular person is now at relaxation. One other message is distributed to the serial monitor, confirming that the particular person is now in a secure state.

This dual-LED system and serial communication be sure that caregivers or monitoring programs are repeatedly up to date concerning the particular person’s standing, facilitating well timed responses to fall incidents and offering reassurance when the particular person is resting peacefully.

Purposes of fall detection system

1. Aged Care: Ensures fast response to falls amongst seniors, decreasing the danger of accidents and making certain well timed medical consideration.
2. House Monitoring: Supplies peace of thoughts to members of the family by alerting them to falls or emergencies after they happen.
3. Hospital Settings: Enhances affected person security by alerting healthcare suppliers to falls in real-time, facilitating swift intervention.
4. Distant Monitoring: Permits for steady monitoring of people in distant or remoted places, making certain help is dispatched promptly.

Invoice of Supplies (BoM)

Parts	Description	Amount
IndusBoard	3cm sized dev board	1
LED	5mm LED	2
Resistor	1Kohm	2
Zumper wires		As required

Coding

#embrace <LSM303AGR_ACC_Sensor.h>
#embrace <LSM303AGR_MAG_Sensor.h>

#if outlined(ARDUINO_SAM_DUE)
#outline DEV_I2C Wire1   //Outline which I2C bus is used. Wire1 for the Arduino Due
#outline SerialPort Serial
#else
#outline DEV_I2C Wire    //Or Wire
#outline SerialPort Serial
#endif

// Parts.
LSM303AGR_ACC_Sensor Acc(&DEV_I2C);
LSM303AGR_MAG_Sensor Magazine(&DEV_I2C);

int fall=7;
int relaxation=6;

// Threshold values for fall detection (may be adjusted)
const float fallThreshold = 2.5; // Modify this threshold primarily based on testing
const float restThreshold = 0.5;

void setup() {
  // Led.
  pinMode(fall, OUTPUT);
  pinMode(relaxation, OUTPUT);
  // Initialize serial for output.
  SerialPort.start(9600);
 
  // Initialize I2C bus.
  DEV_I2C.start();

  // Initlialize elements.
  Acc.start();
  Acc.Allow();
  Acc.EnableTemperatureSensor();
  Magazine.start();
  Magazine.Allow();
}

void loop() {
  // Learn accelerometer LSM303AGR.
  int32_t accelerometer[3];
  Acc.GetAxes(accelerometer);

  // Calculate the magnitude of the acceleration vector
  float magnitude = sqrt(sq(accelerometer[0]) + sq(accelerometer[1]) + sq(accelerometer[2])) / 1000.0; // Convert to g
  // Test for fall detection
  if (magnitude > fallThreshold) {
    SerialPort.println("Fall detected!");
    digitalWrite(fall, HIGH);
    delay(5000);
    digitalWrite(fall, LOW);
    delay(5000);

    // Wait till the sensor detects the particular person is at relaxation
    whereas (magnitude > restThreshold) {
      Acc.GetAxes(accelerometer);
      magnitude = sqrt(sq(accelerometer[0]) + sq(accelerometer[1]) + sq(accelerometer[2])) / 1000.0;
      delay(100);
    }
    SerialPort.println("Individual is at relaxation.");
    digitalWrite(relaxation, HIGH);
    delay(1000);
    digitalWrite(relaxation, LOW);
    delay(1000);
  }
  // Output information.
  SerialPort.print("| Acc[mg]: ");
  SerialPort.print(accelerometer[0]);
  SerialPort.print(" ");
  SerialPort.print(accelerometer[1]);
  SerialPort.print(" ");
  SerialPort.print(accelerometer[2]);
  SerialPort.println(" |");
}

Connection

Testing

Join the indusBoard with the USB and add the code. And open the serial monitor to see the output. Maintain the IndusBoard in your hand and examine the autumn detection system. Should you fall then the blue LED is “ON”.

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Writer(s): Manjeet Vishwakarma,  Abhay Verma and Satywanti Kundu are B.Tech ECE college students at GJUS&T HISAR