Arduino Based Vehicle Accident Alert System Project using GPS, GSM and Accelerometer

Published May 1, 2017 58

S Saddam
Author

Arduino Based Vehicle Accident Alert System using GPS, GSM and Accelerometer

In our previous tutorials, we have learned about How to interface GPS module with Computer, how to build a Arduino GPS Clock and how to Track vehicle using GSM and GPS. Here in this project, we are going to build a Arduino based vehicle accident alert system using GPS, GSM and accelerometer. Accelerometer detects the sudden change in the axes of vehicle and GSM module sends the alert message on your Mobile Phone with the location of the accident. Location of accident is sent in the form of Google Map link, derived from the latitude and longitude from GPS module. The Message also contains the speed of vehicle in knots. See the Demo Video at the end. This Vehicle Accident alert project can also be used as a Tracking System and much more, by just making few changes in hardware and software.

Arduino-Vehicle-Accident-Alert-System-SMS-message

Components Required:

Arduino Uno
GSM Module (SIM900A)
GPS Module (SIM28ML)
Accelerometer (ADXL335)
16x2 LCD
Power Supply
Connecting Wires
10 K-POT
Breadboard or PCB
Power supply 12v 1amp

Before going into Project, we will discuss about GPS, GSM and Accelerometer.

GPS Module and Its Working:

GPS stands for Global Positioning System and used to detect the Latitude and Longitude of any location on the Earth, with exact UTC time (Universal Time Coordinated). GPS module is used to track the location of accident in our project. This device receives the coordinates from the satellite for each and every second, with time and date. We have previously extracted $GPGGA string in Vehicle Tracking System to find the Latitude and Longitude Coordinates.

GPS-Module-SIM28ML

GPS module sends the data related to tracking position in real time, and it sends so many data in NMEA format (see the screenshot below). NMEA format consists several sentences, in which we only need one sentence. This sentence starts from $GPGGA and contains the coordinates, time and other useful information. This GPGGA is referred to Global Positioning System Fix Data. Know more about NMEA sentences and reading GPS data here.

We can extract coordinate from $GPGGA string by counting the commas in the string. Suppose you find $GPGGA string and stores it in an array, then Latitude can be found after two commas and Longitude can be found after four commas. Now, this latitude and longitude can be put in other arrays.

GPS-module-data-for-accident-alert-system

Below is the $GPGGA String, along with its description:

$GPGGA,104534.000,7791.0381,N,06727.4434,E,1,08,0.9,510.4,M,43.9,M,,*47
$GPGGA,HHMMSS.SSS,latitude,N,longitude,E,FQ,NOS,HDP,altitude,M,height,M,,checksum data

Identifier	Description
$GPGGA	Global Positioning system fix data
HHMMSS.SSS	Time in hour minute seconds and milliseconds format.
Latitude	Latitude (Coordinate)
N	Direction N=North, S=South
Longitude	Longitude(Coordinate)
E	Direction E= East, W=West
FQ	Fix Quality Data
NOS	No. of Satellites being Used
HDP	Horizontal Dilution of Precision
Altitude	Altitude (meters above from sea level)
M	Meter
Height	Height
Checksum	Checksum Data

GSM Module:

The SIM900 is a complete Quad-band GSM/GPRS Module which can be embedded easily used by customer or hobbyist. SIM900 GSM Module provides an industry-standard interface. SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data with low power consumption. It is easily available in the market.

SIM900 designed by using single-chip processor integrating AMR926EJ-S core
Quad - band GSM/GPRS module in small size.
GPRS Enabled

GSM-Module-SIM900A

AT Command:

AT means ATTENTION. This command is used to control GSM module. There are some commands for calling and messaging that we have used in many of our previous GSM projects with Arduino. For testing GSM Module we used AT command. After receiving AT Command GSM Module respond with OK. It means GSM module is working fine. Below is some AT commands we used here in this project:

ATE0 For echo off
AT+CNMI=2,2,0,0,0  <ENTER>       Auto opened message Receiving.  (No need to open message)
ATD<Mobile Number>; <ENTER>      making a call (ATD+919610126059;\r\n)
AT+CMGF=1 <ENTER>                Selecting Text mode
AT+CMGS=”Mobile Number” <ENTER>  Assigning recipient’s mobile number
>>Now we can write our message
>>After writing message
Ctrl+Z  send message command (26 in decimal).
ENTER=0x0d in HEX

(To learn more about GSM module, Check our various GSM projects with various microcontrollers here)

Accelerometer:

Pin Description of accelerometer:

Vcc 5 volt supply should connect at this pin.
X-OUT This pin gives an Analog output in x direction
Y-OUT This pin give an Analog Output in y direction
Z-OUT This pin gives an Analog Output in z direction
GND Ground
ST This pin used for set sensitivity of sensor

Accelerometer-ADXL335

Also check our other projects using Accelerometer: Ping Pong Game using Arduino and Accelerometer Based Hand Gesture Controlled Robot.

Circuit Explanation:

Circuit Connections of this Vehicle Accident Alert System Project is simple. Here Tx pin of GPS module is directly connected to digital pin number 10 of Arduino. By using Software Serial Library here, we have allowed serial communication on pin 10 and 11, and made them Rx and Tx respectively and left the Rx pin of GPS Module open. By default Pin 0 and 1 of Arduino are used for serial communication but by using the SoftwareSerial library, we can allow serial communication on other digital pins of the Arduino. 12 Volt supply is used to power the GPS Module.

GSM module’s Tx and Rx pins of are directly connected to pin D2 and D3 of Arduino. For GSM interfacing, here we have also used software serial library. GSM module is also powered by 12v supply. An optional LCD’s data pins D4, D5, D6, and D7 are connected to pin number 6, 7, 8, and 9 of Arduino. Command pin RS and EN of LCD are connected with pin number 4 and 5 of Arduino and RW pin is directly connected with ground. A Potentiometer is also used for setting contrast or brightness of LCD.

An Accelerometer is added in this system for detecting an accident and its x,y, and z-axis ADC output pins are directly connected to Arduino ADC pin A1, A2, and A3.

Working Explanation:

In this project, Arduino is used for controlling whole the process with a GPS Receiver and GSM module. GPS Receiver is used for detecting coordinates of the vehicle, GSM module is used for sending the alert SMS with the coordinates and the link to Google Map. Accelerometer namely ADXL335 is used for detecting accident or sudden change in any axis. And an optional 16x2 LCD is also used for displaying status messages or coordinates. We have used GPS Module SIM28ML and GSM Module SIM900A.

Arduino-Vehicle-Accident-Alert-System-block-diagram

When we are ready with our hardware after programming, we can install it in our vehicle and power it up. Now whenever there is an accident, the car gets tilt and accelerometer changes his axis values. These values read by Arduino and checks if any change occurs in any axis. If any change occurs then Arduino reads coordinates by extracting $GPGGA String from GPS module data (GPS working explained above) and send SMS to the predefined number to the police or ambulance or family member with the location coordinates of accident place. The message also contains a Google Map link to the accident location, so that location can be easily tracked. When we receive the message then we only need to click the link and we will redirect to the Google map and then we can see the exact location of the vehicle. Speed of Vehicle, in knots (1.852 KPH), is also sent in the SMS and displayed on the LCD panel. Check the full Demo Video below the Project.

Arduino-Vehicle-Accident-Alert-System-with-GPS-GSM-and-Accelerometer

Here in this project, we can set the sensitivity of Accelerometer by putting min and max value in the code.

Here in the demo have used given values:

#define minVal -50
#define MaxVal 50

But for better results you can use 200 in place of 50, or can set according to your requirement.

Programming Explanation:

Complete Program has been given below in Code section; here we are explaining its various functions in brief.

First we have included all the required libraries or headers files and declared various variables for calculations and storing data temporary.

After this, we have created a function void initModule(String cmd, char *res, int t) to initialize the GSM module and checking its response using AT commands.

void initModule(String cmd, char *res, int t)
{
  while(1)
  {
    Serial.println(cmd);
    Serial1.println(cmd);
    delay(100);
    while(Serial1.available()>0)
    {
       if(Serial1.find(res))
       {
        Serial.println(res);
        delay(t);
        return;
       }

       else
       {
        Serial.println("Error");
       }
    }
    delay(t);
  }
}

After this, in void setup() function, we have initialized hardware and software serial communication, LCD, GPS, GSM module and accelerometer.

void setup() 
{
  Serial1.begin(9600);
  Serial.begin(9600);
  lcd.begin(16,2);  
  lcd.print("Accident Alert  ");
  lcd.setCursor(0,1);
  lcd.print("     System     ");
  delay(2000);
  lcd.clear();
  .... ......
  ...... .....

Accelerometer calibration process is also done in setup loop. In this, we have taken some samples and then find the average values for the x-axis, y-axis, and z-axis. And store them in a variable. Then we have used these sample values to read changes in accelerometer axis when vehicle gets tilt (accident).

  lcd.print("Callibrating ");
  lcd.setCursor(0,1);
  lcd.print("Acceleromiter");
  for(int i=0;i<samples;i++)
  {
    xsample+=analogRead(x);
    ysample+=analogRead(y);
    zsample+=analogRead(z);
  }

  xsample/=samples;
  ysample/=samples;
  zsample/=samples;

  Serial.println(xsample);
  Serial.println(ysample);
  Serial.println(zsample);

After this, in the void loop() function, we have read accelerometer axis values and done a calculation to extract changes with the help of samples that are taken in Calibration. Now if any changes are more or less then defined level then Arduino sends a message to the predefined number.

void loop() 
{
    int value1=analogRead(x);
    int value2=analogRead(y);
    int value3=analogRead(z);

    int xValue=xsample-value1;
    int yValue=ysample-value2;
    int zValue=zsample-value3;
    
    Serial.print("x=");
    Serial.println(xValue);
    Serial.print("y=");
    Serial.println(yValue);
    Serial.print("z=");
    Serial.println(zValue);
    ..... .....
    ........ ...

Here we have also created some other function for various puposes like void gpsEvent() to get GPS coordinates, void coordinate2dec() for extracting coordinates from the GPS string and convert them into Decimal values, void show_coordinate() for displaying values over serial monitor and LCD, and finally the void Send() for sending alert SMS to the predefined number.

Complete code and demo video is given below, you can check all the functions in the code.

Code

#include<SoftwareSerial.h>
SoftwareSerial Serial1(2,3); //make RX arduino line is pin 2, make TX arduino line is pin 3.
SoftwareSerial gps(10,11);
#include<LiquidCrystal.h>
LiquidCrystal lcd(4,5,6,7,8,9);

#define x A1
#define y A2
#define z A3

int xsample=0;
int ysample=0;
int zsample=0;

#define samples 10

#define minVal -50
#define MaxVal 50

int i=0,k=0;
int gps_status=0;
float latitude=0;
float logitude=0;
String Speed="";
String gpsString="";
char *test="$GPRMC";

void initModule(String cmd, char *res, int t)
{
while(1)
{
Serial.println(cmd);
Serial1.println(cmd);
delay(100);
while(Serial1.available()>0)
{
if(Serial1.find(res))
{
Serial.println(res);
delay(t);
return;
}

else
{
Serial.println("Error");
}
}
delay(t);
}
}

void setup()
{
Serial1.begin(9600);
Serial.begin(9600);
lcd.begin(16,2);
lcd.print("Accident Alert ");
lcd.setCursor(0,1);
lcd.print(" System ");
delay(2000);
lcd.clear();
lcd.print("Initializing");
lcd.setCursor(0,1);
lcd.print("Please Wait...");
delay(1000);

Serial.println("Initializing....");
initModule("AT","OK",1000);
initModule("ATE1","OK",1000);
initModule("AT+CPIN?","READY",1000);
initModule("AT+CMGF=1","OK",1000);
initModule("AT+CNMI=2,2,0,0,0","OK",1000);
Serial.println("Initialized Successfully");
lcd.clear();
lcd.print("Initialized");
lcd.setCursor(0,1);
lcd.print("Successfully");
delay(2000);
lcd.clear();
lcd.print("Callibrating ");
lcd.setCursor(0,1);
lcd.print("Acceleromiter");
for(int i=0;i<samples;i++)
{
xsample+=analogRead(x);
ysample+=analogRead(y);
zsample+=analogRead(z);
}

xsample/=samples;
ysample/=samples;
zsample/=samples;

Serial.println(xsample);
Serial.println(ysample);
Serial.println(zsample);
delay(1000);

lcd.clear();
lcd.print("Waiting For GPS");
lcd.setCursor(0,1);
lcd.print(" Signal ");
delay(2000);
gps.begin(9600);
get_gps();
show_coordinate();
delay(2000);
lcd.clear();
lcd.print("GPS is Ready");
delay(1000);
lcd.clear();
lcd.print("System Ready");
Serial.println("System Ready..");
}

void loop()
{
int value1=analogRead(x);
int value2=analogRead(y);
int value3=analogRead(z);

int xValue=xsample-value1;
int yValue=ysample-value2;
int zValue=zsample-value3;

Serial.print("x=");
Serial.println(xValue);
Serial.print("y=");
Serial.println(yValue);
Serial.print("z=");
Serial.println(zValue);

if(xValue < minVal || xValue > MaxVal || yValue < minVal || yValue > MaxVal || zValue < minVal || zValue > MaxVal)
{
get_gps();
show_coordinate();
lcd.clear();
lcd.print("Sending SMS ");
Serial.println("Sending SMS");
Send();
Serial.println("SMS Sent");
delay(2000);
lcd.clear();
lcd.print("System Ready");
}
}

void gpsEvent()
{
gpsString="";
while(1)
{
while (gps.available()>0) //Serial incoming data from GPS
{
char inChar = (char)gps.read();
gpsString+= inChar; //store incoming data from GPS to temparary string str[]
i++;
// Serial.print(inChar);
if (i < 7)
{
if(gpsString[i-1] != test[i-1]) //check for right string
{
i=0;
gpsString="";
}
}
if(inChar=='\r')
{
if(i>60)
{
gps_status=1;
break;
}
else
{
i=0;
}
}
}
if(gps_status)
break;
}
}

void get_gps()
{
lcd.clear();
lcd.print("Getting GPS Data");
lcd.setCursor(0,1);
lcd.print("Please Wait.....");
gps_status=0;
int x=0;
while(gps_status==0)
{
gpsEvent();
int str_lenth=i;
coordinate2dec();
i=0;x=0;
str_lenth=0;
}
}

void show_coordinate()
{
lcd.clear();
lcd.print("Lat:");
lcd.print(latitude);
lcd.setCursor(0,1);
lcd.print("Log:");
lcd.print(logitude);
Serial.print("Latitude:");
Serial.println(latitude);
Serial.print("Longitude:");
Serial.println(logitude);
Serial.print("Speed(in knots)=");
Serial.println(Speed);
delay(2000);
lcd.clear();
lcd.print("Speed(Knots):");
lcd.setCursor(0,1);
lcd.print(Speed);
}

void coordinate2dec()
{
String lat_degree="";
for(i=20;i<=21;i++)
lat_degree+=gpsString[i];

String lat_minut="";
for(i=22;i<=28;i++)
lat_minut+=gpsString[i];

String log_degree="";
for(i=32;i<=34;i++)
log_degree+=gpsString[i];

String log_minut="";
for(i=35;i<=41;i++)
log_minut+=gpsString[i];

Speed="";
for(i=45;i<48;i++) //extract longitude from string
Speed+=gpsString[i];

float minut= lat_minut.toFloat();
minut=minut/60;
float degree=lat_degree.toFloat();
latitude=degree+minut;

minut= log_minut.toFloat();
minut=minut/60;
degree=log_degree.toFloat();
logitude=degree+minut;
}

void Send()
{
Serial1.println("AT");
delay(500);
serialPrint();
Serial1.println("AT+CMGF=1");
delay(500);
serialPrint();
Serial1.print("AT+CMGS=");
Serial1.print('"');
Serial1.print("9821757249"); //mobile no. for SMS alert
Serial1.println('"');
delay(500);
serialPrint();
Serial1.print("Latitude:");
Serial1.println(latitude);
delay(500);
serialPrint();
Serial1.print(" longitude:");
Serial1.println(logitude);
delay(500);
serialPrint();
Serial1.print(" Speed:");
Serial1.print(Speed);
Serial1.println("Knots");
delay(500);
serialPrint();
Serial1.print("http://maps.google.com/maps?&z=15&mrt=yp&t=k&q=");
Serial1.print(latitude,6);
Serial1.print("+"); //28.612953, 77.231545 //28.612953,77.2293563
Serial1.print(logitude,6);
Serial1.write(26);
delay(2000);
serialPrint();
}

void serialPrint()
{
while(Serial1.available()>0)
{
Serial.print(Serial1.read());
}
}

Video

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Comments

how to drive skype robot

which aap is used for a skype drive robot please send me aap name?

Can this sensors produced

Can this sensors produced output at the same time? when every sensor/module detect something at same time?

doubt

saddam , can you plz share the tutorial , as how and what wired you connected to the bread board and with the ardiuno ,plz email me .

Connecting 2 accelerometers

I want to connect 2 accelerometer in the above program
Kindly please help mee
As soon as possible

SIM800 and GPS6MV2

Is it possible to replace SIM900 with SIM800 and the GPS module SIM28ML with GPS6MV2? I hope you can answer this question. Thank you

Yes it is possible go ahead

Yes you can. Just replace the

Yes you can. Just replace the AT commands with the at commands for the new module. I replace both with SIM808. Which has GPS+GSM in one module.

complete project with SIM808.

Good day

can you please email me the complete project of this project with SIM808 and also the code.

Thank you.

Hi! Good day

Can you please e-mail me the complete project of this project with SIM808 and also the code.

It will be a really great help.

Thank you.

can you please send the code

can you please send the code for sim808 module

nehadundur@gmail.com

pls can you send me the

pls can you send me the project commad using sim808 i want to do the project but has no idea where to start fom can you be of help . pls send to my email

ummulhakam@gmail.com

I think speed drived by this

I think speed drived by this code is wrong you need to use $GPRMC line for that

Accident reporting using gsm,gps

Hai bro,please help me for doing this project...... please send me the code and circuit diagram for the above project .....I had tried the above code several times but it is not showing the output....please help me,,,....it means a lot

can i use a7 gps module

can i use a7 gps module instead of SIM28ML

Alert system

Is this device being implemented ???

error in the code

While compiling and the code there is some error called (redefinition of 'SoftwareSerial gps').How to recover it.Please help me......

can we use GPS SIM6MV2

can we use GPS SIM6MV2 instead of sim28ml?

does this project fall under

does this project fall under the category of IOT? what is the iot componenet in this project

YES IT MAY COME UNDER IOT

Since, the signals are sending the information to cloud by that only you are receiving, messages, and also your signal is being on syncing with the cloud. So it may come under IOT. By sitting in home it self you are getting to know how the things may happened.

hello saddam, can I get the

hello saddam, can I get the full report for this project?

dear sir i

dear sir i
I want to put a push button to send "lat" and "long" to a mobile number
can you please how how to modify the code
thanks

computer engineering

I am doing my final project on this title please help me. the given code has some error that says char to string problem and also how I get the accelerometer liberary for proteus please help me

Can we use s1216f8 GPS

Can we use s1216f8 GPS instead of gps sim 28ml

Regarding to use gps S1216F8

Can we use S1216F8gps instead of gps 28 ml

project

can i get circuit daigram and source code for this project nammed accident detection system

please help me when I excute the code above it shows those error

C:\Users\Habtamu\Desktop\error\error.ino:26:12: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

char *test="$GPRMC";

C:\Users\Habtamu\Desktop\error\error.ino: In function 'void setup()':

C:\Users\Habtamu\Desktop\error\error.ino:69:28: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT","OK",1000);

C:\Users\Habtamu\Desktop\error\error.ino:70:30: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("ATE1","OK",1000);

C:\Users\Habtamu\Desktop\error\error.ino:71:37: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CPIN?","READY",1000);

C:\Users\Habtamu\Desktop\error\error.ino:72:35: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CMGF=1","OK",1000);

C:\Users\Habtamu\Desktop\error\error.ino:73:43: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CNMI=2,2,0,0,0","OK",1000);

Sketch uses 12180 bytes (37%) of program storage space. Maximum is 32256 bytes.
Global variables use 961 bytes (46%) of dynamic memory, leaving 1087 bytes for local variables. Maximum is 2048 bytes.

Hello sir, have you solve

Hello sir, have you solve this problem? I also have the same problem.

ADXL345

what should be the connection if i change the accelerometer adxl355 to adx345 ?
is it okay that the arduino sketch says a deprecated conversion from string constant to 'char*' ?
please help. thanks :)

when i compile the code in

when i compile the code in arduino sketch it says .
C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:26:12: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

char *test="$GPRMC";

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino: In function 'void setup()':

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:69:28: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT","OK",1000);

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:70:30: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("ATE1","OK",1000);

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:71:37: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CPIN?","READY",1000);

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:72:35: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CMGF=1","OK",1000);

C:\Users\foxcent12\Desktop\VEHICLE_ACCIDENT_ALERT\VEHICLE_ACCIDENT_ALERT.ino:73:43: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]

initModule("AT+CNMI=2,2,0,0,0","OK",1000);

Sketch uses 12232 bytes (37%) of program storage space. Maximum is 32256 bytes.
Global variables use 975 bytes (47%) of dynamic memory, leaving 1073 bytes for local variables. Maximum is 2048 bytes.

Sir can i replace SIM900,

Sir can i replace SIM900, ADXL335 and SIM28ML to SIM800L, ADXL 355 and GPS6MV2?
is there any changing in code sir ? thankkss

You can replace but code will

You can replace but code will change

Sir what specifically code

Sir what specifically code that i will change ? thankkk yoouu for the response sir. appreciate it :)

Sir what specifically part of

Sir what specifically part of the code i change sir ? thanksss

I have replaced accelerometer

I have replaced accelerometer from ADXL335 to MPU6050, and GPS SIM28ml to NEO6MV2, what will change in the program? please help me

Sri can you show me how to

Sri can you show me how to connect a button to the circuuit to send the data
love to hear from you soon ...

Modification of the System

If I needed to integrate a manual trigger to the system that prompts the system to send an sms with the location irregardless of an accident occurence or not, how would i do that?

gps

When i used gps neo6m module it is showing wrong lattitude,. insted of 21.53 it is showing 11.53 . please help

same problem you have it fix?

REQUEST FOR GPS CODE ONLY

sir i am in arduino related work all in need a simple gps code which only print the latitude and longitude on serial monitor please help me please

code1:252: error: 'class

code1:252: error: 'class String' has no member named 'toFloat'
i got stuck with this error..can u help me out???

hi, i would like to send the

hi, i would like to send the data into my own local server instead of send the data thru gsm to mobile. how can i doi it?

about the working of this project

can you plzz send the correct code and connection diagram because I have tried the code u gave but it does not work.

I'd like to buy this system

Hello Saddam, I'd really love to get in touch with you, I'd like to get me this system. Please say something

Question

hello
please is it possible to change ADXL sensor with MPU 6050 ? because i dont have this sensor; i want to know how it will be possible to change this code if i use MPU 6050

CODIGO COMPLETO

Buenas tardes serian tan amables de facilitarme el codigo correcto porfa, es para mi proyecto de una materia y lo necesito podrian enviarmelo a mi correo madelyne-theprincess15@hotmail.com

error in the code

hello sir, there is an error in this code. Can u plz send me the modified code. It's very important sir..plz respond

When you can spot the error,

When you can spot the error, why not just correct it

two problems

first i would ike to thank you for this awesome project.

however, iam uesing tinygps neo-6m-0-001 and for some resone it gives wrong latitude but the longitude is correct which lead to very wrong locattion like in another counrtry .

also after "GPS READY" it stuck in no ending lop of sending the lcation and resend over and over even if the /adxl335 is not connected.

note that iam uesng SIM900 insted of SIM900A

About the sim

We will place a sim card in the gsm...and what about the balance in the sim card...should we recharge the sim card or no need could you please help me out..?

Is it possible to replace gsm

Is it possible to replace gsm sim900 with gsm sim 800.If yes,is there in any change in code.Please reply me soooon..waiting for ur response.

help

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:21:12: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

char *test="$GPRMC";

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino: In function 'void setup()':

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:61:28: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

initModule("at","OK",1000);

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:62:30: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

initModule("ATE1","OK",1000);

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:63:37: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

initModule("at+CPIN?","READY",1000);

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:64:35: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

initModule("at+CMGF=1","OK",1000);

C:\Users\harsh\AppData\Local\Temp\Temp1_accident_alert_system.zip\accident_alert_system\accident_alert_system.ino:65:43: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]

initModule("at+CNMI=2,2,0,0,0","OK",1000);

Sketch uses 12084 bytes (37%) of program storage space. Maximum is 32256 bytes.
Global variables use 945 bytes (46%) of dynamic memory, leaving 1103 bytes for local variables. Maximum is 2048 bytes.

#include<SoftwareSerial.h>

SoftwareSerial Serial1(2,3); //make RX arduino line is pin 2, make TX arduino line is pin 3.

SoftwareSerial gps(10,11);

#include<LiquidCrystal.h>

LiquidCrystal lcd(4,5,6,7,8,9);

#define x A1

#define y A2

#define z A3

int xsample=0;

int ysample=0;

int zsample=0;

#define samples 10

#define minVal -50

#define MaxVal 50

int i=0,k=0;

int gps_status=0;

float latitude=0;

float logitude=0;

String Speed="";

String gpsString="";

const char *test="$GPRMC";

void initModule(String cmd, const char *res, int t)

{

while(1)

{

Serial.println(cmd);

Serial1.println(cmd);

delay(100);

while(Serial1.available()>0)

{

if(Serial1.find(*res))

{

Serial.println(*res);

delay(t);

return;

}

else

{

Serial.println("Error");

}

delay(t);

}

void setup()

{

Serial1.begin(9600);

Serial.begin(9600);

lcd.begin(16,2);

lcd.print("Accident Alert ");

lcd.setCursor(0,1);

lcd.print(" System ");

delay(2000);

lcd.clear();

lcd.print("Initializing");

lcd.setCursor(0,1);

lcd.print("Please Wait...");

delay(1000);

Serial.println("Initializing....");

initModule("AT","OK",1000);

initModule("ATE1","OK",1000);

initModule("AT+CPIN?","READY",1000);

initModule("AT+CMGF=1","OK",1000);

initModule("AT+CNMI=2,2,0,0,0","OK",1000);

Serial.println("Initialized Successfully");

lcd.clear();

lcd.print("Initialized");

lcd.setCursor(0,1);

lcd.print("Successfully");

delay(2000);

lcd.clear();

lcd.print("Callibrating ");

lcd.setCursor(0,1);

lcd.print("Acceleromiter");

for(int i=0;i<samples;i++)

{

xsample+=analogRead(x);

ysample+=analogRead(y);

zsample+=analogRead(z);

}

xsample/=samples;

ysample/=samples;

zsample/=samples;

Serial.println(xsample);

Serial.println(ysample);

Serial.println(zsample);

delay(1000);

lcd.clear();

lcd.print("Waiting For GPS");

lcd.setCursor(0,1);

lcd.print(" Signal ");

delay(2000);

gps.begin(9600);

get_gps();

show_coordinate();

delay(2000);

lcd.clear();

lcd.print("GPS is Ready");

delay(1000);

lcd.clear();

lcd.print("System Ready");

Serial.println("System Ready..");

}

void loop()

{

int value1=analogRead(x);

int value2=analogRead(y);

int value3=analogRead(z);

int xValue=xsample-value1;

int yValue=ysample-value2;

int zValue=zsample-value3;

Serial.print("x=");

Serial.println(xValue);

Serial.print("y=");

Serial.println(yValue);

Serial.print("z=");

Serial.println(zValue);

if(xValue < minVal || xValue > MaxVal || yValue < minVal || yValue > MaxVal || zValue < minVal || zValue > MaxVal)

{

get_gps();

show_coordinate();

lcd.clear();

lcd.print("Sending SMS ");

Serial.println("Sending SMS");

Send();

Serial.println("SMS Sent");

delay(2000);

lcd.clear();

lcd.print("System Ready");

}

void gpsEvent()

{

gpsString="";

while(1)

{

while (gps.available()>0) //Serial incoming data from GPS

{

char inChar = (char)gps.read();

gpsString+= inChar; //store incoming data from GPS to temparary string str[]

i++;

// Serial.print(inChar);

if (i < 7)

{

if(gpsString[i-1] != test[i-1]) //check for right string

{

i=0;

gpsString="";

}

if(inChar=='\r')

{

if(i>60)

{

gps_status=1;

break;

}

else

{

i=0;

}

if(gps_status)

break;

}

void get_gps()

{

lcd.clear();

lcd.print("Getting GPS Data");

lcd.setCursor(0,1);

lcd.print("Please Wait.....");

gps_status=0;

int x=0;

while(gps_status==0)

{

gpsEvent();

int str_lenth=i;

coordinate2dec();

i=0;x=0;

str_lenth=0;

}

void show_coordinate()

{

lcd.clear();

lcd.print("Lat:");

lcd.print(latitude);

lcd.setCursor(0,1);

lcd.print("Log:");

lcd.print(logitude);

Serial.print("Latitude:");

Serial.println(latitude);

Serial.print("Longitude:");

Serial.println(logitude);

Serial.print("Speed(in knots)=");

Serial.println(Speed);

delay(2000);

lcd.clear();

lcd.print("Speed(Knots):");

lcd.setCursor(0,1);

lcd.print(Speed);

}

void coordinate2dec()

{

String lat_degree="";

for(i=20;i<=21;i++)

lat_degree+=gpsString[i];

String lat_minut="";

for(i=22;i<=28;i++)

lat_minut+=gpsString[i];

String log_degree="";

for(i=32;i<=34;i++)

log_degree+=gpsString[i];

String log_minut="";

for(i=35;i<=41;i++)

log_minut+=gpsString[i];

Speed="";

for(i=45;i<48;i++) //extract longitude from string

Speed+=gpsString[i];

float minut= lat_minut.toFloat();

minut=minut/60;

float degree=lat_degree.toFloat();

latitude=degree+minut;

minut= log_minut.toFloat();

minut=minut/60;

degree=log_degree.toFloat();

logitude=degree+minut;

}

void Send()

{

Serial1.println("AT");

delay(500);

serialPrint();

Serial1.println("AT+CMGF=1");

delay(500);

serialPrint();

Serial1.print("AT+CMGS=");

Serial1.print('"');

Serial1.print("01760789491"); //mobile no. for SMS alert

Serial1.println('"');

delay(500);

serialPrint();

Serial1.print("Latitude:");

Serial1.println(latitude);

delay(500);

serialPrint();

Serial1.print(" longitude:");

Serial1.println(logitude);

delay(500);

serialPrint();

Serial1.print(" Speed:");

Serial1.print(Speed);

Serial1.println("Knots");

delay(500);

serialPrint();

Serial1.print("http://maps.google.com/maps?&z=15&mrt=yp&t=k&q=");

Serial1.print(latitude,6);

Serial1.print("+"); //28.612953, 77.231545 //28.612953,77.2293563

Serial1.print(logitude,6);

Serial1.write(26);

delay(2000);

serialPrint();

}

void serialPrint()

{

while(Serial1.available()>0)

{

Serial.print(Serial1.read());

}

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Arduino Based Vehicle Accident Alert System using GPS, GSM and Accelerometer

Components Required:

GPS Module and Its Working:

GSM Module:

Accelerometer:

Circuit Explanation:

Working Explanation:

Programming Explanation:

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