Vehicle Accident Alert System

Vehicle Accident Alert System Using Arduino

Prateek 15/12/2022

0 12,745 2 minutes read

Table of Contents

Introduction

In This, Article You Learn How To Interface with The ADXL-335 Sensor With Arduino And I will Just Show you how you Clabite The ADXL-335 sensor.

ADXL-335 An accelerometer is an electromechanical device that will measure acceleration forces in the form of The Analog Value And provide output In the Form Of X, Y And Z directions. with the help of all directions, you create so many Projects.

Bill Of Materials

S.N	Component	Quantity	Buy To Link
1	Arduino Nano	1
2	ADXL-345	1
3	GSM SIM800l	1
4	GPS Neo-6m	1
5	LM2596 Step Conveter	1
6	Zero PCB	1

16 2

14 2

13 2

12 2

11 2

15 2

ADXL-335 Sensor

This module can be used to sense motion (in the case of non-moving) in 3 axes. This is the latest in a long, proven line of Analog Sensors- the holy grail of accelerometers.

PIN

Operating Voltage :- 3.7 To 5v
Value :- Analog Value
Direction:- X-axis, Y-axis And Z-axis

Features

ADXL335: 3-axis sensing.
Small, low-profile package.
Low power: 350 μA.
Single-supply operation: 1.8 V to 3.6 V.
Excellent temperature stability.
BW adjustment with a single capacitor per axis.
RoHS/WEEE is lead-free compliant.

More GPS Related Projects.

PCB Design

Block Diagram

Here I Show The Block Diagram In this Project, On the Input Side I connected to the ADXL-335 Sensor and on the Output Side, I connected To The GSM Sim800l And GPS Neo-6m Module.

If any Movement is detected The ADXL-335 Sensor Crosses the Threshold Value And GSM Send The Text Message.

Circuit Diagram

Now I will Explain the Pin Whare I connected all components, the ADXL-335 Sensor IS connected To The Pin Number:-

VCC 5v
GND GND
X-Axis A0
Y-Axis A1
Z-Axis A2

GSM SI800l Module Will be connected To The Pin Number:-

VCC 3.7v
GND GND
Tx D2
Rx D3

GPS Neo-6m Module Will be connected To The Pin Number:-

VCC 5v
GND GND
Tx D10
Rx D11

Source Code/Program

Before You Uploading the Code You are Required To Add the Library first TinyGPS++.h and Change The Mobile Number Also

const String EMERGENCY_PHONE = "+91xxxxxxxxxx";

1	const String EMERGENCY_PHONE = "+91xxxxxxxxxx";

//Prateek
//www.prateeks.in

#include <AltSoftSerial.h>
#include <TinyGPS++.h>
#include<Wire.h>
#include <math.h>
#include <SoftwareSerial.h>

const String EMERGENCY_PHONE = "+91xxxxxxxxxx";
#define rxPin 2
#define txPin 3

SoftwareSerial sim800(rxPin, txPin);
AltSoftSerial neogps;
TinyGPSPlus gps;
//gps(9,8)

String sms_status, sender_number, received_date, msg;
String latitude, longitude;
#define BUZZER 12
#define BUTTON 11
#define xPin A1
#define yPin A2
#define zPin A3

byte updateflag;

int xaxis = 0, yaxis = 0, zaxis = 0;
int deltx = 0, delty = 0, deltz = 0;
int vibration = 2;
int devibrate = 75;
int magnitude = 0;
int sensitivity = 20;

double angle;
boolean impact_detected = false;
unsigned long time1;
unsigned long impact_time;
unsigned long alert_delay = 30000;

void setup()
{

  Serial.begin(9600);
  sim800.begin(9600);
  neogps.begin(9600);
  pinMode(BUZZER, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);

  sms_status = "";
  sender_number = "";
  received_date = "";
  msg = "";
  sim800.println("AT");
  delay(1000);
  sim800.println("ATE1");
  delay(1000);
  sim800.println("AT+CPIN?");
  delay(1000);
  sim800.println("AT+CMGF=1");
  delay(1000);
  sim800.println("AT+CNMI=1,1,0,0,0");
  delay(1000);
  time1 = micros();
  xaxis = analogRead(xPin);
  yaxis = analogRead(yPin);
  zaxis = analogRead(zPin);
}



void loop()
{
  if (micros() - time1 > 1999) Impact();
  if (updateflag > 0)
  {
    updateflag = 0;
    Serial.println("Impact detected!!");
    Serial.print("Magnitude:");
    Serial.println(magnitude);

    getGps();
    digitalWrite(BUZZER, HIGH);
    impact_detected = true;
    impact_time = millis();


  }
  if (impact_detected == true)
  {
    if (millis() - impact_time >= alert_delay) {
      digitalWrite(BUZZER, LOW);
      makeCall();
      delay(1000);
      sendAlert();
      impact_detected = false;
      impact_time = 0;
    }
  }

  if (digitalRead(BUTTON) == LOW) {
    delay(200);
    digitalWrite(BUZZER, LOW);
    impact_detected = false;
    impact_time = 0;
  }
  while (sim800.available()) {
    parseData(sim800.readString());
  }
  while (Serial.available())  {
    sim800.println(Serial.readString());
  }
}

void Impact()
{
  time1 = micros();
  int oldx = xaxis;
  int oldy = yaxis;
  int oldz = zaxis;

  xaxis = analogRead(xPin);
  yaxis = analogRead(yPin);
  zaxis = analogRead(zPin);


  vibration--;
  Serial.print("Vibration = ");
  Serial.println(vibration);
  if (vibration < 0) vibration = 0;
  if (vibration > 0) return;
  deltx = xaxis - oldx;
  delty = yaxis - oldy;
  deltz = zaxis - oldz;


  magnitude = sqrt(sq(deltx) + sq(delty) + sq(deltz));
  if (magnitude >= sensitivity) //impact detected
  {
    updateflag = 1;
    vibration = devibrate;
  }
  else
  {
    magnitude = 0;
  }
}


void parseData(String buff) {
  Serial.println(buff);

  unsigned int len, index;
  index = buff.indexOf("\r");
  buff.remove(0, index + 2);
  buff.trim();
  if (buff != "OK") {
    index = buff.indexOf(":");
    String cmd = buff.substring(0, index);
    cmd.trim();

    buff.remove(0, index + 2);
    if (cmd == "+CMTI") {
      index = buff.indexOf(",");
      String temp = buff.substring(index + 1, buff.length());
      temp = "AT+CMGR=" + temp + "\r";
      sim800.println(temp);
    }
    else if (cmd == "+CMGR") {
      if (buff.indexOf(EMERGENCY_PHONE) > 1) {
        buff.toLowerCase();
        if (buff.indexOf("get gps") > 1) {
          getGps();
          String sms_data;
          sms_data = "GPS Location Data\r";
          sms_data += "http://maps.google.com/maps?q=loc:";
          sms_data += latitude + "," + longitude;

          sendSms(sms_data);
        }
      }
    }
  }
  else {
  }
}

void getGps()
{
  // Can take up to 60 seconds
  boolean newData = false;
  for (unsigned long start = millis(); millis() - start < 2000;) {
    while (neogps.available()) {
      if (gps.encode(neogps.read())) {
        newData = true;
        break;
      }
    }
  }

  if (newData)
  {
    latitude = String(gps.location.lat(), 6);
    longitude = String(gps.location.lng(), 6);
    newData = false;
  }
  else {
    Serial.println("No GPS data is available");
    latitude = "";
    longitude = "";
  }

  Serial.print("Latitude= "); Serial.println(latitude);
  Serial.print("Lngitude= "); Serial.println(longitude);
}


void sendAlert()
{
  String sms_data;
  sms_data = "Accident Alert!!\r";
  sms_data += "http://maps.google.com/maps?q=loc:";
  sms_data += latitude + "," + longitude;

  sendSms(sms_data);
}

void makeCall()
{
  Serial.println("calling....");
  sim800.println("ATD" + EMERGENCY_PHONE + ";");
  delay(20000); //20 sec delay
  sim800.println("ATH");
  delay(1000); //1 sec delay
}

void sendSms(String text)
{
  //return;
  sim800.print("AT+CMGF=1\r");
  delay(1000);
  sim800.print("AT+CMGS=\"" + EMERGENCY_PHONE + "\"\r");
  delay(1000);
  sim800.print(text);
  delay(100);
  sim800.write(0x1A);
  delay(1000);
  Serial.println("SMS Sent Successfully.");
}


boolean SendAT(String at_command, String expected_answer, unsigned int timeout) {

  uint8_t x = 0;
  boolean answer = 0;
  String response;
  unsigned long previous;
  while ( sim800.available() > 0) sim800.read();

  sim800.println(at_command);

  x = 0;
  previous = millis();

  do {
    if (sim800.available() != 0) {
      response += sim800.read();
      x++;
      if (response.indexOf(expected_answer) > 0) {
        answer = 1;
        break;
      }
    }
  }
  while ((answer == 0) && ((millis() - previous) < timeout));
  Serial.println(response);
  return answer;
}

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//Prateek

//www.prateeks.in

#include <AltSoftSerial.h>

#include <TinyGPS++.h>

#include<Wire.h>

#include <math.h>

#include <SoftwareSerial.h>

const String EMERGENCY_PHONE = "+91xxxxxxxxxx";

#define rxPin 2

#define txPin 3

SoftwareSerial sim800(rxPin, txPin);

AltSoftSerial neogps;

TinyGPSPlus gps;

//gps(9,8)

String sms_status, sender_number, received_date, msg;

String latitude, longitude;

#define BUZZER 12

#define BUTTON 11

#define xPin A1

#define yPin A2

#define zPin A3

byte updateflag;

int xaxis = 0, yaxis = 0, zaxis = 0;

int deltx = 0, delty = 0, deltz = 0;

int vibration = 2;

int devibrate = 75;

int magnitude = 0;

int sensitivity = 20;

double angle;

boolean impact_detected = false;

unsigned long time1;

unsigned long impact_time;

unsigned long alert_delay = 30000;

void setup()

{

Serial.begin(9600);

sim800.begin(9600);

neogps.begin(9600);

pinMode(BUZZER, OUTPUT);

pinMode(BUTTON, INPUT_PULLUP);

sms_status = "";

sender_number = "";

received_date = "";

msg = "";

sim800.println("AT");

delay(1000);

sim800.println("ATE1");

delay(1000);

sim800.println("AT+CPIN?");

delay(1000);

sim800.println("AT+CMGF=1");

delay(1000);

sim800.println("AT+CNMI=1,1,0,0,0");

delay(1000);

time1 = micros();

xaxis = analogRead(xPin);

yaxis = analogRead(yPin);

zaxis = analogRead(zPin);

}

void loop()

{

if (micros() - time1 > 1999) Impact();

if (updateflag > 0)

{

updateflag = 0;

Serial.println("Impact detected!!");

Serial.print("Magnitude:");

Serial.println(magnitude);

getGps();

digitalWrite(BUZZER, HIGH);

impact_detected = true;

impact_time = millis();

}

if (impact_detected == true)

{

if (millis() - impact_time >= alert_delay) {

digitalWrite(BUZZER, LOW);

makeCall();

delay(1000);

sendAlert();

impact_detected = false;

impact_time = 0;

}

if (digitalRead(BUTTON) == LOW) {

delay(200);

digitalWrite(BUZZER, LOW);

impact_detected = false;

impact_time = 0;

}

while (sim800.available()) {

parseData(sim800.readString());

}

while (Serial.available()) {

sim800.println(Serial.readString());

}

void Impact()

{

time1 = micros();

int oldx = xaxis;

int oldy = yaxis;

int oldz = zaxis;

xaxis = analogRead(xPin);

yaxis = analogRead(yPin);

zaxis = analogRead(zPin);

vibration--;

Serial.print("Vibration = ");

Serial.println(vibration);

if (vibration < 0) vibration = 0;

if (vibration > 0) return;

deltx = xaxis - oldx;

delty = yaxis - oldy;

deltz = zaxis - oldz;

magnitude = sqrt(sq(deltx) + sq(delty) + sq(deltz));

if (magnitude >= sensitivity) //impact detected

{

updateflag = 1;

vibration = devibrate;

}

else

{

magnitude = 0;

}

void parseData(String buff) {

Serial.println(buff);

unsigned int len, index;

index = buff.indexOf("\r");

buff.remove(0, index + 2);

buff.trim();

if (buff != "OK") {

index = buff.indexOf(":");

String cmd = buff.substring(0, index);

cmd.trim();

buff.remove(0, index + 2);

if (cmd == "+CMTI") {

index = buff.indexOf(",");

String temp = buff.substring(index + 1, buff.length());

temp = "AT+CMGR=" + temp + "\r";

sim800.println(temp);

}

else if (cmd == "+CMGR") {

if (buff.indexOf(EMERGENCY_PHONE) > 1) {

buff.toLowerCase();

if (buff.indexOf("get gps") > 1) {

getGps();

String sms_data;

sms_data = "GPS Location Data\r";

sms_data += "http://maps.google.com/maps?q=loc:";

sms_data += latitude + "," + longitude;

sendSms(sms_data);

}

else {

}

void getGps()

{

// Can take up to 60 seconds

boolean newData = false;

for (unsigned long start = millis(); millis() - start < 2000;) {

while (neogps.available()) {

if (gps.encode(neogps.read())) {

newData = true;

break;

}

if (newData)

{

latitude = String(gps.location.lat(), 6);

longitude = String(gps.location.lng(), 6);

newData = false;

}

else {

Serial.println("No GPS data is available");

latitude = "";

longitude = "";

}

Serial.print("Latitude= "); Serial.println(latitude);

Serial.print("Lngitude= "); Serial.println(longitude);

}

void sendAlert()

{

String sms_data;

sms_data = "Accident Alert!!\r";

sms_data += "http://maps.google.com/maps?q=loc:";

sms_data += latitude + "," + longitude;

sendSms(sms_data);

}

void makeCall()

{

Serial.println("calling....");

sim800.println("ATD" + EMERGENCY_PHONE + ";");

delay(20000); //20 sec delay

sim800.println("ATH");

delay(1000); //1 sec delay

}

void sendSms(String text)

{

//return;

sim800.print("AT+CMGF=1\r");

delay(1000);

sim800.print("AT+CMGS=\"" + EMERGENCY_PHONE + "\"\r");

delay(1000);

sim800.print(text);

delay(100);

sim800.write(0x1A);

delay(1000);

Serial.println("SMS Sent Successfully.");

}

boolean SendAT(String at_command, String expected_answer, unsigned int timeout) {

uint8_t x = 0;

boolean answer = 0;

String response;

unsigned long previous;

while ( sim800.available() > 0) sim800.read();

sim800.println(at_command);

x = 0;

previous = millis();

do {

if (sim800.available() != 0) {

response += sim800.read();

x++;

if (response.indexOf(expected_answer) > 0) {

answer = 1;

break;

}

while ((answer == 0) && ((millis() - previous) < timeout));

Serial.println(response);

return answer;

}

Demo Of Project

In This Image Will See The Output Of The Project

In 1st Image, The ADXL-335 Sensor Detecd Is Rafe Movement Then GSM Send The TAxt Message To a particular Mobile Number

When You Click The Text Message The Link Will Activated And Is Open

In Google Maps You Track The location In Real Time With The Help Of GPS

If You are Interested In More Projects Then Plz Check Out

Video Tutorial & Guide

Vehicle Accident Alert System

Introduction

Bill Of Materials

ADXL-335 Sensor

PCB Design

Block Diagram

Circuit Diagram

Source Code/Program

Demo Of Project

Video Tutorial & Guide

Prateek

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Getting Started with the ESP32 Board

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